/* roulang page: index */
:root {
            --bg-primary: #0D1117;
            --bg-secondary: #111820;
            --bg-card: #161C24;
            --bg-elevated: #1A212B;
            --accent: #B7F04A;
            --accent-hover: #C6FF5A;
            --accent-subtle: rgba(183, 240, 74, 0.10);
            --text-primary: #F5F7FA;
            --text-secondary: #C8CDD5;
            --text-muted: #8A94A6;
            --border-subtle: rgba(255, 255, 255, 0.08);
            --border-card: rgba(255, 255, 255, 0.06);
            --border-hover: rgba(183, 240, 74, 0.35);
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 14px;
            --radius-xl: 20px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.15);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.25);
            --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.35);
            --shadow-card-hover: 0 8px 28px rgba(0, 0, 0, 0.30);
            --transition-fast: 150ms ease-out;
            --transition-normal: 220ms ease-out;
            --transition-slow: 300ms ease-out;
            --font-stack: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
            --font-mono: 'SF Mono', 'JetBrains Mono', 'Fira Code', 'Consolas', 'Monaco', monospace;
            --container-max: 1280px;
            --section-gap-desktop: 96px;
            --section-gap-mobile: 56px;
            --nav-height: 60px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            font-size: 16px;
        }

        body {
            font-family: var(--font-stack);
            background: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.75;
            min-height: 100vh;
            overflow-x: hidden;
            letter-spacing: 0.01em;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--accent);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button {
            cursor: pointer;
            border: none;
            font-family: inherit;
            font-size: inherit;
            transition: all var(--transition-fast);
            outline: none;
        }
        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        textarea:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
            border-radius: var(--radius-sm);
        }
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            color: var(--text-primary);
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 12px 16px;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
            width: 100%;
        }
        input:focus,
        textarea:focus,
        select:focus {
            border-color: var(--accent);
            box-shadow: 0 0 0 3px var(--accent-subtle);
            outline: none;
        }
        input::placeholder,
        textarea::placeholder {
            color: var(--text-muted);
        }
        label {
            display: block;
            font-weight: 600;
            margin-bottom: 6px;
            color: var(--text-secondary);
            font-size: 0.9rem;
            letter-spacing: 0.02em;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ========== NAVIGATION ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-height);
            background: rgba(13, 17, 23, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-subtle);
            display: flex;
            align-items: center;
            transition: background var(--transition-normal);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }
        .nav-logo {
            font-weight: 800;
            font-size: 1.25rem;
            letter-spacing: 0.03em;
            color: var(--text-primary);
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
            flex-shrink: 0;
        }
        .nav-logo .logo-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--accent);
            display: inline-block;
            animation: logoPulse 2s ease-in-out infinite;
        }
        @keyframes logoPulse {
            0%,
            100% {
                box-shadow: 0 0 6px var(--accent), 0 0 12px rgba(183, 240, 74, 0.4);
            }
            50% {
                box-shadow: 0 0 10px var(--accent), 0 0 20px rgba(183, 240, 74, 0.6);
            }
        }
        .nav-center {
            display: flex;
            align-items: center;
            gap: 4px;
            flex: 1;
            justify-content: center;
        }
        .nav-center a {
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-secondary);
            white-space: nowrap;
            transition: all var(--transition-fast);
            letter-spacing: 0.02em;
            position: relative;
        }
        .nav-center a:hover,
        .nav-center a.active {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.04);
        }
        .nav-center a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--accent);
            border-radius: 1px;
        }
        .nav-right {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .nav-status-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--accent);
            animation: statusBreath 1.8s ease-in-out infinite;
            cursor: pointer;
            position: relative;
        }
        @keyframes statusBreath {
            0%,
            100% {
                box-shadow: 0 0 4px var(--accent), 0 0 8px rgba(183, 240, 74, 0.3);
            }
            50% {
                box-shadow: 0 0 8px var(--accent), 0 0 18px rgba(183, 240, 74, 0.55);
            }
        }
        .nav-status-dot::after {
            content: '在线';
            position: absolute;
            top: 50%;
            right: -36px;
            transform: translateY(-50%);
            font-size: 0.7rem;
            color: var(--accent);
            font-weight: 600;
            white-space: nowrap;
            letter-spacing: 0.04em;
        }
        .nav-notify-btn {
            background: none;
            color: var(--text-secondary);
            font-size: 1.1rem;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
            transition: all var(--transition-fast);
        }
        .nav-notify-btn:hover {
            color: var(--accent);
            background: var(--accent-subtle);
        }
        .nav-notify-btn .badge-dot {
            position: absolute;
            top: 6px;
            right: 8px;
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: #FF5C5C;
            border: 1.5px solid var(--bg-primary);
        }
        .nav-cta-btn {
            background: var(--accent);
            color: #0D1117;
            font-weight: 700;
            padding: 8px 18px;
            border-radius: var(--radius-md);
            font-size: 0.85rem;
            letter-spacing: 0.03em;
            white-space: nowrap;
            transition: all var(--transition-fast);
            border: 1px solid transparent;
        }
        .nav-cta-btn:hover {
            background: var(--accent-hover);
            transform: translateY(-1px);
            box-shadow: 0 4px 14px rgba(183, 240, 74, 0.30);
            border-color: rgba(255, 255, 255, 0.15);
            color: #0D1117;
        }
        .nav-hamburger {
            display: none;
            background: none;
            color: var(--text-primary);
            font-size: 1.4rem;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            align-items: center;
            justify-content: center;
            transition: all var(--transition-fast);
        }
        .nav-hamburger:hover {
            background: rgba(255, 255, 255, 0.06);
        }
        .mobile-nav-overlay {
            display: none;
            position: fixed;
            top: var(--nav-height);
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(13, 17, 23, 0.97);
            backdrop-filter: blur(8px);
            z-index: 999;
            flex-direction: column;
            padding: 24px;
            gap: 4px;
            overflow-y: auto;
        }
        .mobile-nav-overlay.open {
            display: flex;
        }
        .mobile-nav-overlay a {
            padding: 14px 20px;
            border-radius: var(--radius-md);
            font-size: 1rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
            display: block;
        }
        .mobile-nav-overlay a:hover,
        .mobile-nav-overlay a.active {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.04);
        }
        .mobile-nav-overlay .mobile-cta {
            margin-top: 12px;
            background: var(--accent);
            color: #0D1117;
            text-align: center;
            font-weight: 700;
            border-radius: var(--radius-md);
            padding: 14px 20px;
        }

        @media (max-width: 768px) {
            .nav-center {
                display: none;
            }
            .nav-right .nav-cta-btn {
                display: none;
            }
            .nav-right .nav-status-dot {
                display: flex;
            }
            .nav-right .nav-notify-btn {
                display: flex;
            }
            .nav-hamburger {
                display: flex;
            }
            .site-header .container {
                padding: 0 16px;
            }
        }
        @media (min-width: 769px) {
            .mobile-nav-overlay {
                display: none !important;
            }
        }

        /* ========== HERO ========== */
        .hero-section {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            background-attachment: fixed;
            overflow: hidden;
            margin-top: 0;
            padding-top: var(--nav-height);
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(13, 17, 23, 0.55) 0%, rgba(13, 17, 23, 0.78) 40%, rgba(13, 17, 23, 0.92) 100%);
            z-index: 1;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 800px;
            padding: 0 24px;
        }
        .hero-badge {
            display: inline-block;
            padding: 6px 16px;
            border-radius: 20px;
            background: var(--accent-subtle);
            border: 1px solid rgba(183, 240, 74, 0.25);
            color: var(--accent);
            font-size: 0.8rem;
            font-weight: 700;
            letter-spacing: 0.06em;
            margin-bottom: 20px;
            animation: fadeInUp 0.6s ease-out;
        }
        .hero-badge .live-dot {
            display: inline-block;
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: #FF5C5C;
            margin-right: 6px;
            animation: statusBreath 1.2s ease-in-out infinite;
        }
        .hero-title {
            font-size: clamp(2.4rem, 5.5vw, 3.8rem);
            font-weight: 800;
            line-height: 1.18;
            letter-spacing: 0.02em;
            color: #fff;
            margin-bottom: 18px;
            animation: fadeInUp 0.7s ease-out;
        }
        .hero-title .highlight {
            color: var(--accent);
            position: relative;
        }
        .hero-desc {
            font-size: 1.1rem;
            color: var(--text-secondary);
            line-height: 1.8;
            max-width: 620px;
            margin: 0 auto 28px;
            animation: fadeInUp 0.8s ease-out;
        }
        .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            justify-content: center;
            animation: fadeInUp 0.9s ease-out;
        }
        .btn-primary {
            background: var(--accent);
            color: #0D1117;
            font-weight: 700;
            padding: 14px 28px;
            border-radius: var(--radius-md);
            font-size: 1rem;
            letter-spacing: 0.03em;
            border: 1px solid transparent;
            transition: all var(--transition-fast);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-primary:hover {
            background: var(--accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(183, 240, 74, 0.35);
            border-color: rgba(255, 255, 255, 0.2);
            color: #0D1117;
        }
        .btn-outline {
            background: transparent;
            color: var(--text-primary);
            font-weight: 600;
            padding: 14px 28px;
            border-radius: var(--radius-md);
            font-size: 1rem;
            letter-spacing: 0.03em;
            border: 1px solid rgba(255, 255, 255, 0.25);
            transition: all var(--transition-fast);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-outline:hover {
            border-color: var(--accent);
            background: var(--accent-subtle);
            color: var(--accent);
            transform: translateY(-2px);
        }
        .hero-countdown {
            display: flex;
            gap: 16px;
            justify-content: center;
            margin-top: 32px;
            animation: fadeInUp 1s ease-out;
        }
        .countdown-item {
            background: rgba(22, 28, 36, 0.85);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 16px 20px;
            min-width: 70px;
            text-align: center;
            backdrop-filter: blur(8px);
        }
        .countdown-num {
            font-family: var(--font-mono);
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--accent);
            line-height: 1;
            letter-spacing: 0.04em;
        }
        .countdown-label {
            font-size: 0.7rem;
            color: var(--text-muted);
            margin-top: 4px;
            letter-spacing: 0.05em;
            text-transform: uppercase;
        }
        .hero-score-card {
            position: absolute;
            right: 6%;
            top: 50%;
            transform: translateY(-50%);
            z-index: 2;
            background: rgba(22, 28, 36, 0.9);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 20px 24px;
            backdrop-filter: blur(12px);
            animation: fadeInRight 1s ease-out;
            display: flex;
            flex-direction: column;
            gap: 10px;
            min-width: 180px;
        }
        .hero-score-card .score-teams {
            font-weight: 700;
            font-size: 1rem;
            color: var(--text-primary);
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
        }
        .hero-score-card .score-nums {
            font-family: var(--font-mono);
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--accent);
            text-align: center;
            letter-spacing: 0.06em;
        }
        .hero-score-card .score-status {
            font-size: 0.7rem;
            color: var(--accent);
            text-align: center;
            letter-spacing: 0.04em;
        }
        @media (max-width: 1024px) {
            .hero-score-card {
                display: none;
            }
        }
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(28px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        @keyframes fadeInRight {
            from {
                opacity: 0;
                transform: translate(40px, -50%);
            }
            to {
                opacity: 1;
                transform: translate(0, -50%);
            }
        }

        /* ========== TICKER ========== */
        .ticker-bar {
            background: var(--bg-elevated);
            border-bottom: 1px solid var(--border-subtle);
            overflow: hidden;
            padding: 10px 0;
            position: relative;
            z-index: 3;
        }
        .ticker-track {
            display: flex;
            gap: 40px;
            animation: tickerScroll 35s linear infinite;
            white-space: nowrap;
            font-size: 0.85rem;
            color: var(--text-secondary);
            font-weight: 500;
            letter-spacing: 0.02em;
        }
        .ticker-track span {
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .ticker-track .ticker-live {
            color: var(--accent);
            font-weight: 700;
        }
        .ticker-track .ticker-score {
            font-family: var(--font-mono);
            font-weight: 700;
            color: var(--text-primary);
        }
        @keyframes tickerScroll {
            0% {
                transform: translateX(0);
            }
            100% {
                transform: translateX(-50%);
            }
        }

        /* ========== SECTIONS ========== */
        section {
            padding: var(--section-gap-desktop) 0;
        }
        @media (max-width: 768px) {
            section {
                padding: var(--section-gap-mobile) 0;
            }
        }
        .section-tag {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 700;
            letter-spacing: 0.08em;
            color: var(--accent);
            text-transform: uppercase;
            margin-bottom: 10px;
        }
        .section-title {
            font-size: clamp(1.6rem, 3.2vw, 2.2rem);
            font-weight: 800;
            letter-spacing: 0.02em;
            color: var(--text-primary);
            margin-bottom: 12px;
            line-height: 1.3;
        }
        .section-desc {
            color: var(--text-muted);
            font-size: 1rem;
            line-height: 1.8;
            max-width: 680px;
            margin-bottom: 32px;
        }

        /* ========== SERVICE GRID (1+2) ========== */
        .service-grid-asym {
            display: grid;
            grid-template-columns: 1.5fr 1fr;
            gap: 20px;
            align-items: stretch;
        }
        .service-card-large {
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-lg);
            padding: 32px;
            display: flex;
            flex-direction: column;
            gap: 16px;
            transition: all var(--transition-normal);
            position: relative;
            overflow: hidden;
        }
        .service-card-large:hover {
            border-color: var(--border-hover);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
        }
        .service-card-large .service-icon {
            font-size: 2rem;
            color: var(--accent);
            margin-bottom: 4px;
        }
        .service-card-large h3 {
            font-size: 1.4rem;
            font-weight: 700;
            letter-spacing: 0.02em;
        }
        .service-card-large p {
            color: var(--text-muted);
            line-height: 1.7;
            font-size: 0.95rem;
        }
        .service-card-large .btn-sm {
            align-self: flex-start;
            margin-top: auto;
        }
        .service-sub-grid {
            display: grid;
            grid-template-rows: 1fr 1fr;
            gap: 20px;
        }
        .service-card-sm {
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-lg);
            padding: 22px 24px;
            display: flex;
            flex-direction: column;
            gap: 8px;
            transition: all var(--transition-normal);
            position: relative;
        }
        .service-card-sm:hover {
            border-color: var(--border-hover);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }
        .service-card-sm h4 {
            font-size: 1.05rem;
            font-weight: 700;
            letter-spacing: 0.02em;
        }
        .service-card-sm p {
            color: var(--text-muted);
            font-size: 0.85rem;
            line-height: 1.6;
        }
        .btn-sm {
            background: transparent;
            color: var(--accent);
            font-weight: 600;
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            font-size: 0.85rem;
            letter-spacing: 0.03em;
            border: 1px solid rgba(183, 240, 74, 0.3);
            transition: all var(--transition-fast);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .btn-sm:hover {
            background: var(--accent-subtle);
            border-color: var(--accent);
            color: var(--accent);
        }
        @media (max-width: 768px) {
            .service-grid-asym {
                grid-template-columns: 1fr;
            }
            .service-sub-grid {
                grid-template-rows: auto;
                grid-template-columns: 1fr;
            }
        }

        /* ========== DATA STRIP ========== */
        .data-strip {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
            padding: 48px 0;
        }
        .data-strip-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
        }
        .data-strip-item .data-num {
            font-family: var(--font-mono);
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--accent);
            letter-spacing: 0.04em;
            line-height: 1;
        }
        .data-strip-item .data-label {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-top: 6px;
            letter-spacing: 0.03em;
        }
        @media (max-width: 768px) {
            .data-strip-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 28px;
            }
            .data-strip-item .data-num {
                font-size: 2rem;
            }
        }

        /* ========== CASE GRID ========== */
        .case-grid-irregular {
            display: grid;
            grid-template-columns: 1.3fr 1fr 1fr;
            grid-template-rows: auto auto;
            gap: 18px;
        }
        .case-card {
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all var(--transition-normal);
            display: flex;
            flex-direction: column;
            cursor: pointer;
        }
        .case-card:hover {
            border-color: var(--border-hover);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
        }
        .case-card .case-cover {
            width: 100%;
            height: 180px;
            object-fit: cover;
            border-bottom: 1px solid var(--border-subtle);
        }
        .case-card.large .case-cover {
            height: 260px;
        }
        .case-card .case-body {
            padding: 18px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .case-card .case-date {
            font-size: 0.75rem;
            color: var(--text-muted);
            letter-spacing: 0.04em;
        }
        .case-card h4 {
            font-weight: 700;
            font-size: 1rem;
            line-height: 1.4;
            letter-spacing: 0.02em;
        }
        .case-card .case-excerpt {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.6;
        }
        .case-card.large {
            grid-row: span 2;
        }
        @media (max-width: 768px) {
            .case-grid-irregular {
                grid-template-columns: 1fr 1fr;
                grid-template-rows: auto;
            }
            .case-card.large {
                grid-row: span 1;
                grid-column: span 2;
            }
            .case-card .case-cover {
                height: 140px;
            }
            .case-card.large .case-cover {
                height: 180px;
            }
        }
        @media (max-width: 520px) {
            .case-grid-irregular {
                grid-template-columns: 1fr;
            }
            .case-card.large {
                grid-column: span 1;
            }
        }

        /* ========== DEEP CONTENT ========== */
        .deep-content {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }
        .deep-content.reverse {
            direction: rtl;
        }
        .deep-content.reverse>* {
            direction: ltr;
        }
        .deep-content .deep-text h3 {
            font-size: 1.5rem;
            font-weight: 800;
            letter-spacing: 0.02em;
            margin-bottom: 16px;
            line-height: 1.3;
        }
        .deep-content .deep-text p {
            color: var(--text-muted);
            line-height: 1.9;
            font-size: 0.95rem;
            margin-bottom: 12px;
        }
        .deep-content .deep-text blockquote {
            border-left: 3px solid var(--accent);
            padding: 12px 0 12px 20px;
            margin: 16px 0;
            color: var(--text-secondary);
            font-style: italic;
            font-size: 0.95rem;
            background: var(--accent-subtle);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
        }
        .deep-content .deep-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-subtle);
        }
        .deep-content .deep-image img {
            width: 100%;
            height: auto;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .deep-content .deep-image:hover img {
            transform: scale(1.03);
        }
        @media (max-width: 768px) {
            .deep-content {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .deep-content.reverse {
                direction: ltr;
            }
        }

        /* ========== SOLUTION ALTERNATING ========== */
        .solution-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
            padding: 40px 0;
            border-bottom: 1px solid var(--border-subtle);
        }
        .solution-block:last-child {
            border-bottom: none;
        }
        .solution-block .sol-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-subtle);
        }
        .solution-block .sol-image img {
            width: 100%;
            height: auto;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .solution-block .sol-image:hover img {
            transform: scale(1.04);
        }
        .solution-block .sol-text h3 {
            font-size: 1.5rem;
            font-weight: 800;
            letter-spacing: 0.02em;
            margin-bottom: 14px;
            line-height: 1.3;
        }
        .solution-block .sol-text p {
            color: var(--text-muted);
            line-height: 1.9;
            font-size: 0.95rem;
            margin-bottom: 10px;
        }
        @media (max-width: 768px) {
            .solution-block {
                grid-template-columns: 1fr;
                gap: 20px;
                padding: 28px 0;
            }
        }

        /* ========== NEWS LIST ========== */
        .news-mixed {
            display: grid;
            grid-template-columns: 1.2fr 1fr;
            gap: 24px;
            align-items: start;
        }
        .news-main-list {
            display: flex;
            flex-direction: column;
            gap: 0;
        }
        .news-item {
            display: flex;
            gap: 16px;
            padding: 18px 0;
            border-bottom: 1px solid var(--border-subtle);
            transition: all var(--transition-fast);
            cursor: pointer;
            align-items: flex-start;
        }
        .news-item:hover {
            background: rgba(255, 255, 255, 0.015);
            padding-left: 8px;
            border-left: 2px solid var(--accent);
        }
        .news-item .news-date {
            font-size: 0.78rem;
            color: var(--text-muted);
            white-space: nowrap;
            font-weight: 500;
            letter-spacing: 0.03em;
            min-width: 70px;
        }
        .news-item .news-info h4 {
            font-weight: 700;
            font-size: 0.95rem;
            letter-spacing: 0.02em;
            margin-bottom: 4px;
            line-height: 1.4;
        }
        .news-item .news-info .news-excerpt {
            font-size: 0.82rem;
            color: var(--text-muted);
            line-height: 1.6;
        }
        .news-item .news-info .btn-sm {
            margin-top: 6px;
        }
        .news-side-card {
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-lg);
            padding: 24px;
            position: sticky;
            top: 80px;
        }
        .news-side-card h4 {
            font-weight: 700;
            font-size: 1rem;
            letter-spacing: 0.02em;
            margin-bottom: 14px;
        }
        .news-side-card .hot-item {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 10px 0;
            border-bottom: 1px solid var(--border-subtle);
            font-size: 0.85rem;
            color: var(--text-secondary);
            cursor: pointer;
            transition: color var(--transition-fast);
        }
        .news-side-card .hot-item:hover {
            color: var(--accent);
        }
        .news-side-card .hot-item .hot-rank {
            font-family: var(--font-mono);
            font-weight: 800;
            font-size: 1.1rem;
            color: var(--accent);
            min-width: 28px;
        }
        @media (max-width: 768px) {
            .news-mixed {
                grid-template-columns: 1fr;
            }
            .news-side-card {
                position: static;
                margin-top: 20px;
            }
        }

        /* ========== BRAND INTRO ========== */
        .brand-intro-block {
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: 40px;
            align-items: center;
            background: var(--bg-card);
            border-radius: var(--radius-xl);
            padding: 40px;
            border: 1px solid var(--border-card);
        }
        .brand-intro-block .brand-text h3 {
            font-size: 1.5rem;
            font-weight: 800;
            letter-spacing: 0.02em;
            margin-bottom: 14px;
        }
        .brand-intro-block .brand-text p {
            color: var(--text-muted);
            line-height: 1.9;
            font-size: 0.95rem;
        }
        .brand-intro-block .brand-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
            align-items: center;
        }
        .brand-badge-item {
            background: var(--bg-elevated);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 20px 24px;
            text-align: center;
            min-width: 100px;
            transition: all var(--transition-fast);
        }
        .brand-badge-item:hover {
            border-color: var(--border-hover);
            transform: translateY(-2px);
        }
        .brand-badge-item .badge-icon {
            font-size: 2rem;
            color: var(--accent);
            margin-bottom: 6px;
        }
        .brand-badge-item .badge-val {
            font-family: var(--font-mono);
            font-weight: 800;
            font-size: 1.4rem;
            color: var(--text-primary);
        }
        .brand-badge-item .badge-lbl {
            font-size: 0.7rem;
            color: var(--text-muted);
            letter-spacing: 0.04em;
        }
        @media (max-width: 768px) {
            .brand-intro-block {
                grid-template-columns: 1fr;
                padding: 28px;
                gap: 24px;
            }
        }

        /* ========== RANKING LIST ========== */
        .ranking-table-wrap {
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-lg);
            overflow: hidden;
        }
        .ranking-row {
            display: grid;
            grid-template-columns: 50px 1fr 100px 80px;
            gap: 12px;
            align-items: center;
            padding: 14px 20px;
            border-bottom: 1px solid var(--border-subtle);
            transition: all var(--transition-fast);
            cursor: pointer;
            font-size: 0.9rem;
        }
        .ranking-row:last-child {
            border-bottom: none;
        }
        .ranking-row:hover {
            background: rgba(255, 255, 255, 0.02);
        }
        .ranking-row .rank-num {
            font-family: var(--font-mono);
            font-weight: 800;
            font-size: 1.2rem;
            color: var(--accent);
            text-align: center;
        }
        .ranking-row .rank-title {
            font-weight: 600;
            letter-spacing: 0.02em;
        }
        .ranking-row .rank-metric {
            font-family: var(--font-mono);
            font-weight: 700;
            color: var(--text-secondary);
            text-align: right;
        }
        .ranking-row .rank-trend {
            text-align: right;
            font-size: 0.8rem;
            font-weight: 600;
        }
        .trend-up {
            color: #4ADE80;
        }
        .trend-hot {
            color: #FF8C42;
        }
        @media (max-width: 520px) {
            .ranking-row {
                grid-template-columns: 36px 1fr 60px 50px;
                gap: 6px;
                padding: 12px 14px;
                font-size: 0.8rem;
            }
        }

        /* ========== CHANGELOG ========== */
        .changelog-list {
            display: flex;
            flex-direction: column;
            gap: 0;
        }
        .changelog-item {
            display: flex;
            gap: 18px;
            padding: 20px 0;
            border-bottom: 1px solid var(--border-subtle);
            align-items: flex-start;
            transition: all var(--transition-fast);
        }
        .changelog-item:hover {
            background: rgba(255, 255, 255, 0.015);
        }
        .changelog-version {
            font-family: var(--font-mono);
            font-weight: 800;
            font-size: 0.9rem;
            color: var(--accent);
            min-width: 72px;
            white-space: nowrap;
            letter-spacing: 0.04em;
        }
        .changelog-body h4 {
            font-weight: 700;
            font-size: 0.95rem;
            letter-spacing: 0.02em;
            margin-bottom: 4px;
        }
        .changelog-body p {
            color: var(--text-muted);
            font-size: 0.85rem;
            line-height: 1.6;
        }

        /* ========== SOCIAL PROOF ========== */
        .social-proof-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            text-align: center;
        }
        .social-proof-card {
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-lg);
            padding: 28px 20px;
            transition: all var(--transition-normal);
        }
        .social-proof-card:hover {
            border-color: var(--border-hover);
            transform: translateY(-3px);
            box-shadow: var(--shadow-card-hover);
        }
        .social-proof-card .sp-icon {
            font-size: 2.2rem;
            color: var(--accent);
            margin-bottom: 10px;
        }
        .social-proof-card .sp-num {
            font-family: var(--font-mono);
            font-size: 2rem;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: 0.03em;
        }
        .social-proof-card .sp-label {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-top: 4px;
            letter-spacing: 0.03em;
        }
        .social-proof-card .sp-stars {
            color: #F5A623;
            font-size: 0.9rem;
            letter-spacing: 2px;
        }
        @media (max-width: 768px) {
            .social-proof-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 14px;
            }
        }

        /* ========== REWARD PREVIEW ========== */
        .reward-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .reward-card {
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-lg);
            padding: 28px 22px;
            text-align: center;
            transition: all var(--transition-normal);
            position: relative;
            overflow: hidden;
        }
        .reward-card:hover {
            border-color: var(--border-hover);
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
        }
        .reward-card .reward-icon {
            font-size: 2.6rem;
            margin-bottom: 12px;
        }
        .reward-card h4 {
            font-weight: 700;
            font-size: 1rem;
            letter-spacing: 0.02em;
            margin-bottom: 6px;
        }
        .reward-card p {
            color: var(--text-muted);
            font-size: 0.82rem;
            line-height: 1.5;
        }
        .reward-card .reward-badge {
            position: absolute;
            top: 14px;
            right: 14px;
            background: var(--accent);
            color: #0D1117;
            font-size: 0.65rem;
            font-weight: 800;
            padding: 3px 10px;
            border-radius: 12px;
            letter-spacing: 0.05em;
        }
        @media (max-width: 768px) {
            .reward-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 520px) {
            .reward-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ========== FAQ ========== */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 0;
        }
        .faq-item {
            border-bottom: 1px solid var(--border-subtle);
            overflow: hidden;
        }
        .faq-question {
            width: 100%;
            background: none;
            color: var(--text-primary);
            font-weight: 700;
            font-size: 1rem;
            padding: 18px 0;
            text-align: left;
            display: flex;
            justify-content: space-between;
            align-items: center;
            letter-spacing: 0.02em;
            cursor: pointer;
            transition: color var(--transition-fast);
        }
        .faq-question:hover {
            color: var(--accent);
        }
        .faq-question .faq-icon {
            font-size: 1.2rem;
            transition: transform var(--transition-normal);
            flex-shrink: 0;
            margin-left: 16px;
            color: var(--text-muted);
        }
        .faq-item.open .faq-question .faq-icon {
            transform: rotate(45deg);
            color: var(--accent);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-slow);
            color: var(--text-muted);
            line-height: 1.8;
            font-size: 0.9rem;
            padding: 0;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 0 18px 0;
        }

        /* ========== CTA / CONTACT ========== */
        .cta-contact-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 36px;
            align-items: start;
        }
        .contact-form {
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-lg);
            padding: 32px;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .contact-form h3 {
            font-weight: 800;
            font-size: 1.3rem;
            letter-spacing: 0.02em;
            margin-bottom: 4px;
        }
        .contact-info-panel {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .contact-info-card {
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-lg);
            padding: 24px;
            transition: all var(--transition-fast);
        }
        .contact-info-card:hover {
            border-color: var(--border-hover);
        }
        .contact-info-card h4 {
            font-weight: 700;
            font-size: 0.95rem;
            letter-spacing: 0.02em;
            margin-bottom: 6px;
        }
        .contact-info-card p {
            color: var(--text-muted);
            font-size: 0.85rem;
            line-height: 1.6;
        }
        .contact-info-card .contact-icon {
            color: var(--accent);
            font-size: 1.3rem;
            margin-bottom: 8px;
        }
        @media (max-width: 768px) {
            .cta-contact-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ========== PRE-FOOTER CTA ========== */
        .pre-footer-cta {
            text-align: center;
            background: var(--bg-secondary);
            border-radius: var(--radius-xl);
            padding: 56px 32px;
            border: 1px solid var(--border-subtle);
            margin: 0 24px;
            max-width: var(--container-max);
            margin-left: auto;
            margin-right: auto;
        }
        .pre-footer-cta h3 {
            font-size: 1.8rem;
            font-weight: 800;
            letter-spacing: 0.02em;
            margin-bottom: 12px;
        }
        .pre-footer-cta p {
            color: var(--text-muted);
            max-width: 500px;
            margin: 0 auto 24px;
            line-height: 1.7;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #080C12;
            border-top: 1px solid var(--border-subtle);
            padding: 40px 0 28px;
            color: var(--text-muted);
            font-size: 0.82rem;
            letter-spacing: 0.02em;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 28px;
        }
        .footer-col h4 {
            font-weight: 700;
            font-size: 0.9rem;
            color: var(--text-primary);
            margin-bottom: 12px;
            letter-spacing: 0.03em;
        }
        .footer-col a {
            display: block;
            color: var(--text-muted);
            padding: 4px 0;
            font-size: 0.82rem;
            transition: color var(--transition-fast);
        }
        .footer-col a:hover {
            color: var(--accent);
        }
        .footer-bottom {
            border-top: 1px solid var(--border-subtle);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-size: 0.78rem;
        }
        .footer-bottom a {
            color: var(--text-muted);
            margin: 0 4px;
        }
        .footer-bottom a:hover {
            color: var(--accent);
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }

/* roulang page: category1 */
:root {
            --bg-primary: #0D1117;
            --bg-secondary: #111820;
            --bg-card: #161C24;
            --bg-elevated: #1A212B;
            --accent: #B7F04A;
            --accent-hover: #C6FF5A;
            --accent-subtle: rgba(183, 240, 74, 0.10);
            --text-primary: #F5F7FA;
            --text-secondary: #C8CDD5;
            --text-muted: #8A94A6;
            --border-subtle: rgba(255, 255, 255, 0.08);
            --border-card: rgba(255, 255, 255, 0.06);
            --border-hover: rgba(183, 240, 74, 0.35);
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 14px;
            --radius-xl: 20px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.15);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.25);
            --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.35);
            --shadow-card-hover: 0 8px 28px rgba(0, 0, 0, 0.30);
            --transition-fast: 150ms ease-out;
            --transition-normal: 220ms ease-out;
            --transition-slow: 300ms ease-out;
            --font-stack: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
            --font-mono: 'SF Mono', 'JetBrains Mono', 'Fira Code', 'Consolas', 'Monaco', monospace;
            --container-max: 1280px;
            --section-gap-desktop: 96px;
            --section-gap-mobile: 56px;
            --nav-height: 60px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            font-size: 16px;
        }

        body {
            font-family: var(--font-stack);
            background: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.75;
            min-height: 100vh;
            overflow-x: hidden;
            letter-spacing: 0.01em;
            margin: 0;
            padding: 0;
            padding-top: var(--nav-height);
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        a:hover {
            color: var(--accent);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button {
            cursor: pointer;
            border: none;
            font-family: inherit;
            font-size: inherit;
            transition: all var(--transition-fast);
            outline: none;
            background: none;
        }

        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        textarea:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
            border-radius: var(--radius-sm);
        }

        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            color: var(--text-primary);
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 12px 16px;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
            width: 100%;
        }

        input:focus,
        textarea:focus,
        select:focus {
            border-color: var(--accent);
            box-shadow: 0 0 0 3px var(--accent-subtle);
            outline: none;
        }

        input::placeholder,
        textarea::placeholder {
            color: var(--text-muted);
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ========== NAVIGATION ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-height);
            background: rgba(13, 17, 23, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-subtle);
            display: flex;
            align-items: center;
            transition: background var(--transition-normal);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }

        .nav-logo {
            font-weight: 800;
            font-size: 1.25rem;
            letter-spacing: 0.03em;
            color: var(--text-primary);
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
            flex-shrink: 0;
        }

        .nav-logo .logo-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--accent);
            display: inline-block;
            animation: logoPulse 2s ease-in-out infinite;
        }

        @keyframes logoPulse {
            0%,
            100% {
                box-shadow: 0 0 0 0 rgba(183, 240, 74, 0.6);
            }
            50% {
                box-shadow: 0 0 0 8px rgba(183, 240, 74, 0);
            }
        }

        .nav-center {
            display: flex;
            align-items: center;
            gap: 4px;
            flex: 1;
            justify-content: center;
        }

        .nav-center a {
            padding: 8px 14px;
            border-radius: var(--radius-sm);
            font-size: 0.88rem;
            font-weight: 500;
            color: var(--text-secondary);
            white-space: nowrap;
            transition: all var(--transition-fast);
            letter-spacing: 0.02em;
            position: relative;
        }

        .nav-center a:hover,
        .nav-center a.active {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.04);
        }

        .nav-center a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 18px;
            height: 2px;
            background: var(--accent);
            border-radius: 1px;
        }

        .nav-right {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .nav-status-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--accent);
            display: inline-block;
            animation: statusBreath 1.8s ease-in-out infinite;
            cursor: default;
        }

        @keyframes statusBreath {
            0%,
            100% {
                box-shadow: 0 0 0 0 rgba(183, 240, 74, 0.5);
            }
            50% {
                box-shadow: 0 0 0 6px rgba(183, 240, 74, 0);
            }
        }

        .nav-notify-btn {
            position: relative;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.04);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-secondary);
            font-size: 1rem;
            transition: all var(--transition-fast);
        }

        .nav-notify-btn:hover {
            background: rgba(255, 255, 255, 0.08);
            color: var(--text-primary);
        }

        .badge-dot {
            position: absolute;
            top: 6px;
            right: 6px;
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: #FF4D4F;
            border: 1.5px solid var(--bg-primary);
        }

        .nav-cta-btn {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            background: var(--accent);
            color: #0D1117;
            font-weight: 700;
            font-size: 0.85rem;
            letter-spacing: 0.02em;
            white-space: nowrap;
            transition: all var(--transition-fast);
            border: 1px solid transparent;
        }

        .nav-cta-btn:hover {
            background: var(--accent-hover);
            color: #0D1117;
            border-color: rgba(255, 255, 255, 0.2);
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(183, 240, 74, 0.25);
        }

        .nav-hamburger {
            display: none;
            width: 36px;
            height: 36px;
            border-radius: var(--radius-sm);
            background: rgba(255, 255, 255, 0.04);
            align-items: center;
            justify-content: center;
            color: var(--text-secondary);
            font-size: 1.1rem;
        }

        .nav-hamburger:hover {
            background: rgba(255, 255, 255, 0.08);
            color: var(--text-primary);
        }

        /* Mobile nav drawer */
        .mobile-nav-drawer {
            display: none;
            position: fixed;
            top: var(--nav-height);
            left: 0;
            right: 0;
            background: var(--bg-secondary);
            border-bottom: 1px solid var(--border-subtle);
            padding: 16px 24px;
            z-index: 999;
            flex-direction: column;
            gap: 6px;
            box-shadow: var(--shadow-lg);
        }

        .mobile-nav-drawer.open {
            display: flex;
        }

        .mobile-nav-drawer a {
            padding: 12px 16px;
            border-radius: var(--radius-md);
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
        }

        .mobile-nav-drawer a:hover,
        .mobile-nav-drawer a.active {
            background: rgba(255, 255, 255, 0.04);
            color: var(--text-primary);
        }

        .mobile-nav-drawer a.active {
            border-left: 3px solid var(--accent);
            padding-left: 13px;
        }

        /* ========== BREADCRUMB ========== */
        .breadcrumb-bar {
            background: var(--bg-secondary);
            border-bottom: 1px solid var(--border-subtle);
            padding: 14px 0;
        }

        .breadcrumb-bar .container {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }

        .breadcrumb-bar a {
            font-size: 0.85rem;
            color: var(--text-muted);
            transition: color var(--transition-fast);
        }

        .breadcrumb-bar a:hover {
            color: var(--accent);
        }

        .breadcrumb-bar .breadcrumb-sep {
            color: var(--text-muted);
            font-size: 0.8rem;
            opacity: 0.5;
        }

        .breadcrumb-bar .breadcrumb-current {
            font-size: 0.85rem;
            color: var(--text-secondary);
            font-weight: 500;
        }

        /* ========== HERO SECTION ========== */
        .category-hero {
            position: relative;
            padding: 64px 0 56px;
            background: var(--bg-secondary);
            overflow: hidden;
        }

        .category-hero .hero-bg-img {
            position: absolute;
            top: 0;
            right: -60px;
            width: 55%;
            height: 100%;
            object-fit: cover;
            opacity: 0.25;
            mask-image: linear-gradient(to left, rgba(0, 0, 0, 0.8) 20%, rgba(0, 0, 0, 0) 100%);
            -webkit-mask-image: linear-gradient(to left, rgba(0, 0, 0, 0.8) 20%, rgba(0, 0, 0, 0) 100%);
            pointer-events: none;
        }

        .category-hero .container {
            position: relative;
            z-index: 1;
        }

        .category-hero h1 {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: 0.03em;
            margin: 0 0 16px;
            line-height: 1.25;
        }

        .category-hero h1 .accent-text {
            color: var(--accent);
        }

        .category-hero .hero-subtitle {
            font-size: 1.1rem;
            color: var(--text-secondary);
            line-height: 1.7;
            max-width: 620px;
            margin: 0 0 28px;
        }

        .category-hero .hero-meta-row {
            display: flex;
            align-items: center;
            gap: 20px;
            flex-wrap: wrap;
        }

        .category-hero .hero-stat-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--bg-elevated);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 10px 18px;
            font-size: 0.9rem;
            color: var(--text-secondary);
        }

        .category-hero .hero-stat-badge .stat-num {
            font-weight: 800;
            font-size: 1.3rem;
            color: var(--accent);
            font-family: var(--font-mono);
            letter-spacing: 0.02em;
        }

        .category-hero .hero-cta-group {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            margin-top: 8px;
        }

        .btn-primary {
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            background: var(--accent);
            color: #0D1117;
            font-weight: 700;
            font-size: 0.95rem;
            letter-spacing: 0.02em;
            transition: all var(--transition-fast);
            border: 1px solid transparent;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
        }

        .btn-primary:hover {
            background: var(--accent-hover);
            color: #0D1117;
            border-color: rgba(255, 255, 255, 0.2);
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(183, 240, 74, 0.3);
        }

        .btn-outline {
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            background: transparent;
            color: var(--text-primary);
            font-weight: 600;
            font-size: 0.95rem;
            letter-spacing: 0.02em;
            border: 1px solid var(--border-subtle);
            transition: all var(--transition-fast);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
        }

        .btn-outline:hover {
            background: var(--accent);
            color: #0D1117;
            border-color: var(--accent);
            transform: translateY(-1px);
        }

        /* ========== MAIN LAYOUT: TWO-COLUMN ========== */
        .main-content-area {
            padding: 48px 0;
            background: var(--bg-primary);
        }

        .two-col-layout {
            display: grid;
            grid-template-columns: 240px 1fr 320px;
            gap: 36px;
            align-items: flex-start;
        }

        /* Left sticky sidebar nav */
        .side-nav-sticky {
            position: sticky;
            top: calc(var(--nav-height) + 24px);
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-lg);
            padding: 20px 16px;
            max-height: calc(100vh - var(--nav-height) - 48px);
            overflow-y: auto;
        }

        .side-nav-sticky .side-nav-title {
            font-size: 0.8rem;
            font-weight: 700;
            color: var(--text-muted);
            text-transform: uppercase;
            letter-spacing: 0.06em;
            margin-bottom: 14px;
            padding-left: 8px;
        }

        .side-nav-sticky a {
            display: block;
            padding: 10px 12px;
            border-radius: var(--radius-sm);
            font-size: 0.88rem;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
            border-left: 2px solid transparent;
            margin-bottom: 2px;
        }

        .side-nav-sticky a:hover,
        .side-nav-sticky a.active {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.03);
            border-left-color: var(--accent);
        }

        .side-nav-sticky a.active {
            font-weight: 600;
            background: var(--accent-subtle);
        }

        /* Center content area */
        .content-body {
            min-width: 0;
        }

        .content-section {
            margin-bottom: 48px;
            scroll-margin-top: calc(var(--nav-height) + 20px);
        }

        .content-section h2 {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: 0 0 12px;
            letter-spacing: 0.02em;
            line-height: 1.3;
        }

        .content-section h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: 20px 0 10px;
            letter-spacing: 0.02em;
        }

        .content-section p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.85;
            margin: 0 0 14px;
        }

        .content-section .highlight-box {
            background: var(--bg-card);
            border-left: 3px solid var(--accent);
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            padding: 18px 22px;
            margin: 20px 0;
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.8;
        }

        .content-section .highlight-box strong {
            color: var(--accent);
        }

        .content-section .inline-img {
            border-radius: var(--radius-md);
            margin: 20px 0;
            width: 100%;
            border: 1px solid var(--border-card);
        }

        .content-section ul {
            list-style: none;
            padding: 0;
            margin: 16px 0;
        }

        .content-section ul li {
            padding: 8px 0 8px 24px;
            position: relative;
            font-size: 0.93rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        .content-section ul li::before {
            content: '';
            position: absolute;
            left: 0;
            top: 14px;
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent);
        }

        .content-section .data-table-mini {
            width: 100%;
            border-collapse: collapse;
            margin: 20px 0;
            font-size: 0.9rem;
        }

        .content-section .data-table-mini th {
            background: var(--bg-card);
            color: var(--text-muted);
            font-weight: 600;
            padding: 12px 14px;
            text-align: left;
            border-bottom: 1px solid var(--border-subtle);
            font-size: 0.82rem;
            letter-spacing: 0.03em;
            text-transform: uppercase;
        }

        .content-section .data-table-mini td {
            padding: 11px 14px;
            border-bottom: 1px solid var(--border-card);
            color: var(--text-secondary);
        }

        .content-section .data-table-mini tr:hover td {
            background: rgba(255, 255, 255, 0.015);
        }

        .content-section .data-table-mini .live-dot {
            display: inline-block;
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: #FF4D4F;
            margin-right: 6px;
            animation: statusBreath 1.5s ease-in-out infinite;
        }

        /* Right info cards */
        .info-cards-col {
            position: sticky;
            top: calc(var(--nav-height) + 24px);
            display: flex;
            flex-direction: column;
            gap: 20px;
            max-height: calc(100vh - var(--nav-height) - 48px);
            overflow-y: auto;
        }

        .info-card {
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-lg);
            padding: 20px;
            transition: all var(--transition-normal);
        }

        .info-card:hover {
            border-color: var(--border-hover);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }

        .info-card .info-card-img {
            border-radius: var(--radius-md);
            width: 100%;
            aspect-ratio: 16 / 10;
            object-fit: cover;
            margin-bottom: 14px;
            border: 1px solid var(--border-card);
        }

        .info-card .info-card-tag {
            display: inline-block;
            padding: 4px 10px;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 700;
            letter-spacing: 0.04em;
            background: var(--accent-subtle);
            color: var(--accent);
            margin-bottom: 8px;
        }

        .info-card .info-card-tag.live-tag {
            background: rgba(255, 77, 79, 0.15);
            color: #FF6B6B;
            animation: statusBreath 1.5s ease-in-out infinite;
        }

        .info-card h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: 0 0 6px;
            line-height: 1.4;
        }

        .info-card p {
            font-size: 0.82rem;
            color: var(--text-muted);
            line-height: 1.6;
            margin: 0 0 10px;
        }

        .info-card .info-card-meta {
            font-size: 0.78rem;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
        }

        .info-card .info-card-link {
            font-size: 0.82rem;
            font-weight: 600;
            color: var(--accent);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: all var(--transition-fast);
        }

        .info-card .info-card-link:hover {
            gap: 8px;
            color: var(--accent-hover);
        }

        /* ========== DEEP CONTENT STRIP ========== */
        .deep-content-strip {
            padding: 56px 0;
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
        }

        .deep-content-strip h2 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: 0 0 8px;
        }

        .deep-content-strip .strip-subtitle {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 28px;
        }

        .deep-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
        }

        .deep-card {
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-lg);
            padding: 24px;
            transition: all var(--transition-normal);
        }

        .deep-card:hover {
            border-color: var(--border-hover);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }

        .deep-card .deep-card-icon {
            font-size: 1.5rem;
            color: var(--accent);
            margin-bottom: 12px;
        }

        .deep-card h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: 0 0 8px;
        }

        .deep-card p {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin: 0;
        }

        /* ========== STEPS SECTION ========== */
        .steps-section {
            padding: 56px 0;
            background: var(--bg-primary);
        }

        .steps-section h2 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: 0 0 28px;
            text-align: center;
        }

        .steps-list {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            counter-reset: step-counter;
        }

        .step-item {
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-lg);
            padding: 22px;
            text-align: center;
            position: relative;
            transition: all var(--transition-normal);
        }

        .step-item:hover {
            border-color: var(--border-hover);
            transform: translateY(-3px);
            box-shadow: var(--shadow-card-hover);
        }

        .step-item .step-num {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--accent);
            color: #0D1117;
            font-weight: 800;
            font-size: 1.1rem;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 14px;
            font-family: var(--font-mono);
        }

        .step-item h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: 0 0 6px;
        }

        .step-item p {
            font-size: 0.82rem;
            color: var(--text-muted);
            line-height: 1.6;
            margin: 0;
        }

        /* ========== FAQ SECTION ========== */
        .faq-section {
            padding: 56px 0;
            background: var(--bg-secondary);
        }

        .faq-section h2 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: 0 0 28px;
            text-align: center;
        }

        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 0;
        }

        .faq-item {
            border-bottom: 1px solid var(--border-card);
            transition: all var(--transition-normal);
        }

        .faq-item:first-child {
            border-top: 1px solid var(--border-card);
        }

        .faq-question {
            width: 100%;
            padding: 18px 20px 18px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-primary);
            text-align: left;
            background: none;
            cursor: pointer;
            transition: color var(--transition-fast);
            gap: 12px;
        }

        .faq-question:hover {
            color: var(--accent);
        }

        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.04);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.8rem;
            transition: all var(--transition-fast);
            color: var(--text-muted);
        }

        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            background: var(--accent-subtle);
            color: var(--accent);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-slow);
            padding: 0 20px 0 0;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding-bottom: 18px;
        }

        .faq-answer p {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.75;
            margin: 0;
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            padding: 56px 0;
            background: var(--bg-primary);
            text-align: center;
        }

        .cta-section .cta-inner {
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-xl);
            padding: 48px 36px;
            max-width: 700px;
            margin: 0 auto;
        }

        .cta-section h2 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: 0 0 10px;
        }

        .cta-section p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            margin: 0 0 24px;
            line-height: 1.7;
        }

        .cta-section .btn-primary {
            font-size: 1rem;
            padding: 14px 36px;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-subtle);
            padding: 48px 0 28px;
            color: var(--text-secondary);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }

        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: 0 0 14px;
            letter-spacing: 0.02em;
        }

        .footer-col a {
            display: block;
            font-size: 0.84rem;
            color: var(--text-muted);
            padding: 5px 0;
            transition: color var(--transition-fast);
        }

        .footer-col a:hover {
            color: var(--accent);
        }

        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 12px;
            padding-top: 20px;
            border-top: 1px solid var(--border-card);
            font-size: 0.78rem;
            color: var(--text-muted);
            justify-content: space-between;
        }

        .footer-bottom a {
            color: var(--text-muted);
            transition: color var(--transition-fast);
        }

        .footer-bottom a:hover {
            color: var(--accent);
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1200px) {
            .two-col-layout {
                grid-template-columns: 200px 1fr 280px;
                gap: 24px;
            }
            .category-hero h1 {
                font-size: 2.2rem;
            }
            .steps-list {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 1024px) {
            .two-col-layout {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .side-nav-sticky {
                position: relative;
                top: 0;
                max-height: none;
                display: flex;
                flex-wrap: wrap;
                gap: 6px;
                padding: 14px;
                flex-direction: row;
                overflow-x: auto;
                border-radius: var(--radius-md);
                scrollbar-width: none;
            }
            .side-nav-sticky::-webkit-scrollbar {
                display: none;
            }
            .side-nav-sticky .side-nav-title {
                display: none;
            }
            .side-nav-sticky a {
                white-space: nowrap;
                font-size: 0.82rem;
                padding: 8px 14px;
                border-left: none;
                border-bottom: 2px solid transparent;
                flex-shrink: 0;
            }
            .side-nav-sticky a.active {
                border-left: none;
                border-bottom-color: var(--accent);
            }
            .info-cards-col {
                position: relative;
                top: 0;
                max-height: none;
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .category-hero .hero-bg-img {
                width: 70%;
                right: -100px;
                opacity: 0.18;
            }
            .deep-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }

        @media (max-width: 768px) {
            .nav-center {
                display: none;
            }
            .nav-hamburger {
                display: flex;
            }
            .nav-cta-btn {
                padding: 7px 14px;
                font-size: 0.8rem;
            }
            .category-hero {
                padding: 40px 0 36px;
            }
            .category-hero h1 {
                font-size: 1.7rem;
            }
            .category-hero .hero-subtitle {
                font-size: 0.95rem;
            }
            .category-hero .hero-bg-img {
                display: none;
            }
            .two-col-layout {
                gap: 20px;
            }
            .info-cards-col {
                grid-template-columns: 1fr;
            }
            .steps-list {
                grid-template-columns: 1fr;
            }
            .content-section h2 {
                font-size: 1.3rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
                font-size: 0.74rem;
            }
            .breadcrumb-bar {
                padding: 10px 0;
            }
            .breadcrumb-bar a,
            .breadcrumb-bar .breadcrumb-current {
                font-size: 0.78rem;
            }
            .cta-section .cta-inner {
                padding: 32px 20px;
            }
            .btn-primary,
            .btn-outline {
                padding: 10px 20px;
                font-size: 0.88rem;
            }
        }

        @media (max-width: 520px) {
            .category-hero h1 {
                font-size: 1.4rem;
            }
            .category-hero .hero-meta-row {
                flex-direction: column;
                align-items: flex-start;
                gap: 10px;
            }
            .category-hero .hero-cta-group {
                flex-direction: column;
                width: 100%;
            }
            .category-hero .hero-cta-group .btn-primary,
            .category-hero .hero-cta-group .btn-outline {
                width: 100%;
                justify-content: center;
            }
            .steps-list {
                grid-template-columns: 1fr;
            }
            .content-section .data-table-mini {
                font-size: 0.75rem;
            }
            .content-section .data-table-mini th,
            .content-section .data-table-mini td {
                padding: 8px 10px;
            }
            .faq-question {
                font-size: 0.88rem;
                padding: 14px 16px 14px 0;
            }
        }

/* roulang page: category3 */
:root {
            --bg-primary: #0D1117;
            --bg-secondary: #111820;
            --bg-card: #161C24;
            --bg-elevated: #1A212B;
            --accent: #B7F04A;
            --accent-hover: #C6FF5A;
            --accent-subtle: rgba(183, 240, 74, 0.10);
            --accent-subtle2: rgba(183, 240, 74, 0.18);
            --text-primary: #F5F7FA;
            --text-secondary: #C8CDD5;
            --text-muted: #8A94A6;
            --border-subtle: rgba(255, 255, 255, 0.08);
            --border-card: rgba(255, 255, 255, 0.06);
            --border-hover: rgba(183, 240, 74, 0.35);
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 14px;
            --radius-xl: 20px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.15);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.25);
            --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.35);
            --shadow-card-hover: 0 8px 28px rgba(0, 0, 0, 0.30);
            --transition-fast: 150ms ease-out;
            --transition-normal: 220ms ease-out;
            --transition-slow: 300ms ease-out;
            --font-stack: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
            --font-mono: 'SF Mono', 'JetBrains Mono', 'Fira Code', 'Consolas', 'Monaco', monospace;
            --container-max: 1280px;
            --section-gap-desktop: 80px;
            --section-gap-mobile: 48px;
            --nav-height: 60px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            font-size: 16px;
        }

        body {
            font-family: var(--font-stack);
            background: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.75;
            min-height: 100vh;
            overflow-x: hidden;
            letter-spacing: 0.01em;
            padding-top: var(--nav-height);
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        a:hover {
            color: var(--accent);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button {
            cursor: pointer;
            border: none;
            font-family: inherit;
            font-size: inherit;
            transition: all var(--transition-fast);
            outline: none;
            background: none;
        }

        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        textarea:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
            border-radius: var(--radius-sm);
        }

        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            color: var(--text-primary);
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 12px 16px;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
            width: 100%;
        }

        input:focus,
        textarea:focus,
        select:focus {
            border-color: var(--accent);
            box-shadow: 0 0 0 3px var(--accent-subtle);
            outline: none;
        }

        input::placeholder,
        textarea::placeholder {
            color: var(--text-muted);
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ========== NAVIGATION ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-height);
            background: rgba(13, 17, 23, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-subtle);
            display: flex;
            align-items: center;
            transition: background var(--transition-normal);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }

        .nav-logo {
            font-weight: 800;
            font-size: 1.25rem;
            letter-spacing: 0.03em;
            color: var(--text-primary);
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
            flex-shrink: 0;
        }

        .nav-logo .logo-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--accent);
            display: inline-block;
            animation: logoPulse 2s ease-in-out infinite;
        }

        @keyframes logoPulse {
            0%,
            100% {
                box-shadow: 0 0 0 0 rgba(183, 240, 74, 0.6);
            }
            50% {
                box-shadow: 0 0 0 8px rgba(183, 240, 74, 0);
            }
        }

        .nav-center {
            display: flex;
            align-items: center;
            gap: 4px;
            flex: 1;
            justify-content: center;
        }

        .nav-center a {
            padding: 8px 14px;
            border-radius: var(--radius-sm);
            font-size: 0.88rem;
            font-weight: 500;
            color: var(--text-secondary);
            white-space: nowrap;
            transition: all var(--transition-fast);
            letter-spacing: 0.02em;
            position: relative;
        }

        .nav-center a:hover,
        .nav-center a.active {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.04);
        }

        .nav-center a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 18px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
        }

        .nav-right {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .nav-status-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--accent);
            animation: statusPulse 2s ease-in-out infinite;
            cursor: default;
        }

        @keyframes statusPulse {
            0%,
            100% {
                opacity: 1;
            }
            50% {
                opacity: 0.4;
            }
        }

        .nav-notify-btn {
            position: relative;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-secondary);
            background: rgba(255, 255, 255, 0.03);
            transition: all var(--transition-fast);
            font-size: 1rem;
        }

        .nav-notify-btn:hover {
            color: var(--accent);
            background: rgba(255, 255, 255, 0.06);
        }

        .badge-dot {
            position: absolute;
            top: 8px;
            right: 8px;
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: #FF4757;
            border: 1.5px solid var(--bg-primary);
        }

        .nav-cta-btn {
            padding: 8px 18px;
            border-radius: var(--radius-md);
            background: var(--accent);
            color: #0D1117 !important;
            font-weight: 700;
            font-size: 0.85rem;
            letter-spacing: 0.03em;
            white-space: nowrap;
            transition: all var(--transition-fast);
            box-shadow: 0 2px 8px rgba(183, 240, 74, 0.15);
        }

        .nav-cta-btn:hover {
            background: var(--accent-hover);
            box-shadow: 0 4px 16px rgba(183, 240, 74, 0.28);
            transform: translateY(-1px);
            color: #0D1117 !important;
        }

        .nav-hamburger {
            display: none;
            width: 38px;
            height: 38px;
            border-radius: var(--radius-sm);
            align-items: center;
            justify-content: center;
            color: var(--text-secondary);
            font-size: 1.2rem;
            background: rgba(255, 255, 255, 0.03);
        }

        .nav-hamburger:hover {
            color: var(--accent);
            background: rgba(255, 255, 255, 0.06);
        }

        /* Mobile Nav Drawer */
        .mobile-nav-drawer {
            display: none;
            position: fixed;
            top: var(--nav-height);
            left: 0;
            right: 0;
            bottom: 0;
            background: var(--bg-primary);
            z-index: 999;
            flex-direction: column;
            padding: 24px;
            gap: 6px;
            overflow-y: auto;
            border-top: 1px solid var(--border-subtle);
        }

        .mobile-nav-drawer.open {
            display: flex;
        }

        .mobile-nav-drawer a {
            display: block;
            padding: 14px 18px;
            border-radius: var(--radius-md);
            font-size: 1rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
            border: 1px solid transparent;
        }

        .mobile-nav-drawer a:hover,
        .mobile-nav-drawer a.active {
            color: var(--text-primary);
            background: var(--bg-card);
            border-color: var(--border-subtle);
        }

        .mobile-nav-drawer a.active {
            border-left: 3px solid var(--accent);
        }

        /* ========== BREADCRUMB ========== */
        .breadcrumb-bar {
            background: var(--bg-secondary);
            border-bottom: 1px solid var(--border-subtle);
            padding: 14px 0;
        }

        .breadcrumb-bar .container {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }

        .breadcrumb-bar a {
            color: var(--text-muted);
            font-size: 0.85rem;
            transition: color var(--transition-fast);
        }

        .breadcrumb-bar a:hover {
            color: var(--accent);
        }

        .breadcrumb-bar .separator {
            color: var(--text-muted);
            font-size: 0.8rem;
            opacity: 0.5;
        }

        .breadcrumb-bar .current {
            color: var(--text-primary);
            font-size: 0.85rem;
            font-weight: 600;
        }

        /* ========== PAGE HEADER ========== */
        .page-header-section {
            padding: 48px 0 32px;
            background: var(--bg-primary);
        }

        .page-header-section .container {
            display: flex;
            flex-wrap: wrap;
            gap: 32px;
            align-items: flex-start;
            justify-content: space-between;
        }

        .page-header-left {
            flex: 1;
            min-width: 280px;
        }

        .page-header-left h1 {
            font-size: 2.4rem;
            font-weight: 800;
            letter-spacing: 0.03em;
            color: var(--text-primary);
            line-height: 1.25;
            margin-bottom: 12px;
        }

        .page-header-left h1 .accent-highlight {
            color: var(--accent);
        }

        .page-header-left .page-desc {
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.7;
            max-width: 600px;
        }

        .page-header-stats {
            display: flex;
            gap: 28px;
            flex-shrink: 0;
            flex-wrap: wrap;
        }

        .stat-item {
            text-align: center;
            min-width: 80px;
        }

        .stat-number {
            font-family: var(--font-mono);
            font-size: 2rem;
            font-weight: 800;
            color: var(--accent);
            letter-spacing: 0.02em;
            line-height: 1;
        }

        .stat-label {
            font-size: 0.78rem;
            color: var(--text-muted);
            margin-top: 6px;
            letter-spacing: 0.03em;
        }

        /* ========== HOT SPOTLIGHT ========== */
        .hot-spotlight-section {
            padding: 0 0 40px;
        }

        .hot-spotlight-section .container {
            display: grid;
            grid-template-columns: 1.5fr 1fr;
            gap: 20px;
        }

        .spotlight-main {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            cursor: pointer;
            transition: all var(--transition-normal);
            min-height: 360px;
            display: flex;
            flex-direction: column;
        }

        .spotlight-main:hover {
            border-color: var(--border-hover);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }

        .spotlight-main .spotlight-img {
            width: 100%;
            height: 240px;
            object-fit: cover;
            display: block;
        }

        .spotlight-main .spotlight-body {
            padding: 20px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .spotlight-tag {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 0.72rem;
            font-weight: 700;
            letter-spacing: 0.04em;
            background: var(--accent);
            color: #0D1117;
            text-transform: uppercase;
            margin-bottom: 10px;
            width: fit-content;
        }

        .spotlight-main .spotlight-title {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--text-primary);
            line-height: 1.4;
            margin-bottom: 8px;
        }

        .spotlight-main .spotlight-meta {
            display: flex;
            gap: 16px;
            font-size: 0.8rem;
            color: var(--text-muted);
            align-items: center;
        }

        .spotlight-main .spotlight-meta span {
            display: flex;
            align-items: center;
            gap: 5px;
        }

        .spotlight-side {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .spotlight-side-card {
            position: relative;
            border-radius: var(--radius-md);
            overflow: hidden;
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            cursor: pointer;
            transition: all var(--transition-normal);
            display: flex;
            flex: 1;
            min-height: 130px;
        }

        .spotlight-side-card:hover {
            border-color: var(--border-hover);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-1px);
        }

        .spotlight-side-card .side-img {
            width: 130px;
            min-width: 130px;
            object-fit: cover;
            display: block;
        }

        .spotlight-side-card .side-body {
            padding: 16px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            gap: 6px;
        }

        .spotlight-side-card .side-title {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-primary);
            line-height: 1.4;
        }

        .spotlight-side-card .side-meta {
            font-size: 0.75rem;
            color: var(--text-muted);
        }

        /* ========== TAG FILTER ========== */
        .tag-filter-section {
            padding: 0 0 32px;
        }

        .tag-filter-section .container {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            align-items: center;
        }

        .tag-filter-label {
            font-size: 0.85rem;
            color: var(--text-muted);
            font-weight: 600;
            letter-spacing: 0.03em;
            margin-right: 4px;
        }

        .tag-filter-btn {
            padding: 8px 18px;
            border-radius: 24px;
            font-size: 0.84rem;
            font-weight: 500;
            color: var(--text-secondary);
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            transition: all var(--transition-fast);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .tag-filter-btn:hover {
            color: var(--text-primary);
            border-color: var(--border-hover);
            background: var(--bg-elevated);
        }

        .tag-filter-btn.active {
            background: var(--accent);
            color: #0D1117;
            border-color: var(--accent);
            font-weight: 700;
        }

        /* ========== IRREGULAR GRID ========== */
        .replay-grid-section {
            padding: 0 0 64px;
        }

        .replay-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .replay-card {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            cursor: pointer;
            transition: all var(--transition-normal);
            display: flex;
            flex-direction: column;
        }

        .replay-card:hover {
            border-color: var(--border-hover);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
        }

        .replay-card.span-2 {
            grid-column: span 2;
        }

        .replay-card.span-1 {
            grid-column: span 1;
        }

        .replay-card .card-img-wrap {
            position: relative;
            overflow: hidden;
        }

        .replay-card.span-2 .card-img-wrap {
            height: 220px;
        }

        .replay-card.span-1 .card-img-wrap {
            height: 170px;
        }

        .replay-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }

        .replay-card:hover .card-img-wrap img {
            transform: scale(1.04);
        }

        .replay-card .card-duration {
            position: absolute;
            bottom: 10px;
            right: 10px;
            background: rgba(0, 0, 0, 0.78);
            color: #fff;
            padding: 4px 10px;
            border-radius: 4px;
            font-size: 0.72rem;
            font-weight: 600;
            letter-spacing: 0.03em;
            font-family: var(--font-mono);
        }

        .replay-card .card-body {
            padding: 18px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .replay-card .card-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
        }

        .replay-card .card-tag {
            font-size: 0.7rem;
            padding: 3px 10px;
            border-radius: 14px;
            font-weight: 600;
            letter-spacing: 0.03em;
            background: var(--accent-subtle);
            color: var(--accent);
            border: 1px solid rgba(183, 240, 74, 0.2);
        }

        .replay-card .card-tag.hot {
            background: rgba(255, 71, 87, 0.15);
            color: #FF6B7A;
            border: 1px solid rgba(255, 71, 87, 0.25);
        }

        .replay-card .card-title {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-primary);
            line-height: 1.4;
        }

        .replay-card.span-1 .card-title {
            font-size: 0.92rem;
        }

        .replay-card .card-excerpt {
            font-size: 0.82rem;
            color: var(--text-muted);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .replay-card .card-meta-row {
            display: flex;
            align-items: center;
            gap: 14px;
            font-size: 0.78rem;
            color: var(--text-muted);
            margin-top: auto;
            padding-top: 4px;
        }

        .replay-card .card-meta-row span {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .replay-card .card-play-btn {
            margin-top: 8px;
            padding: 10px 16px;
            border-radius: var(--radius-md);
            background: var(--accent);
            color: #0D1117;
            font-weight: 700;
            font-size: 0.84rem;
            letter-spacing: 0.03em;
            text-align: center;
            transition: all var(--transition-fast);
            width: 100%;
            display: block;
        }

        .replay-card .card-play-btn:hover {
            background: var(--accent-hover);
            box-shadow: 0 4px 16px rgba(183, 240, 74, 0.3);
            color: #0D1117;
        }

        /* ========== LOAD MORE ========== */
        .load-more-section {
            padding: 0 0 64px;
            text-align: center;
        }

        .load-more-btn {
            padding: 14px 40px;
            border-radius: var(--radius-md);
            background: transparent;
            color: var(--text-primary);
            border: 1px solid var(--border-subtle);
            font-weight: 600;
            font-size: 0.95rem;
            letter-spacing: 0.03em;
            transition: all var(--transition-fast);
            cursor: pointer;
        }

        .load-more-btn:hover {
            border-color: var(--accent);
            color: var(--accent);
            background: var(--accent-subtle);
        }

        /* ========== FAQ ========== */
        .faq-section {
            padding: 64px 0;
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
        }

        .faq-section .section-title {
            font-size: 1.8rem;
            font-weight: 800;
            letter-spacing: 0.03em;
            color: var(--text-primary);
            margin-bottom: 8px;
            text-align: center;
        }

        .faq-section .section-subtitle {
            font-size: 0.9rem;
            color: var(--text-muted);
            text-align: center;
            margin-bottom: 40px;
        }

        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 0;
        }

        .faq-item {
            border-bottom: 1px solid var(--border-subtle);
            overflow: hidden;
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 8px;
            cursor: pointer;
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--text-primary);
            letter-spacing: 0.02em;
            transition: color var(--transition-fast);
            user-select: none;
            gap: 16px;
        }

        .faq-question:hover {
            color: var(--accent);
        }

        .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--bg-card);
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all var(--transition-normal);
            font-size: 0.8rem;
            color: var(--text-muted);
            border: 1px solid var(--border-card);
        }

        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            background: var(--accent-subtle);
            color: var(--accent);
            border-color: var(--accent);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-slow);
            padding: 0 8px;
            color: var(--text-secondary);
            font-size: 0.88rem;
            line-height: 1.75;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 8px 18px;
        }

        /* ========== CTA ========== */
        .cta-section {
            padding: 64px 0;
        }

        .cta-block {
            background: var(--bg-elevated);
            border-radius: var(--radius-xl);
            padding: 48px 40px;
            display: flex;
            flex-wrap: wrap;
            gap: 32px;
            align-items: center;
            justify-content: space-between;
            border: 1px solid var(--border-subtle);
            position: relative;
            overflow: hidden;
        }

        .cta-block::before {
            content: '';
            position: absolute;
            top: -40px;
            right: -40px;
            width: 180px;
            height: 180px;
            border-radius: 50%;
            background: var(--accent-subtle);
            pointer-events: none;
        }

        .cta-text {
            flex: 1;
            min-width: 250px;
            position: relative;
            z-index: 1;
        }

        .cta-text h2 {
            font-size: 1.6rem;
            font-weight: 800;
            letter-spacing: 0.03em;
            color: var(--text-primary);
            margin-bottom: 8px;
        }

        .cta-text p {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.7;
        }

        .cta-actions {
            display: flex;
            gap: 12px;
            flex-shrink: 0;
            position: relative;
            z-index: 1;
            flex-wrap: wrap;
        }

        .btn-primary {
            padding: 14px 28px;
            border-radius: var(--radius-md);
            background: var(--accent);
            color: #0D1117;
            font-weight: 700;
            font-size: 0.9rem;
            letter-spacing: 0.03em;
            transition: all var(--transition-fast);
            white-space: nowrap;
            box-shadow: 0 2px 10px rgba(183, 240, 74, 0.2);
        }

        .btn-primary:hover {
            background: var(--accent-hover);
            box-shadow: 0 6px 24px rgba(183, 240, 74, 0.35);
            transform: translateY(-2px);
            color: #0D1117;
        }

        .btn-secondary {
            padding: 14px 28px;
            border-radius: var(--radius-md);
            background: transparent;
            color: var(--text-primary);
            border: 1px solid var(--border-subtle);
            font-weight: 600;
            font-size: 0.9rem;
            letter-spacing: 0.03em;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .btn-secondary:hover {
            border-color: var(--accent);
            color: var(--accent);
            background: var(--accent-subtle);
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #090C12;
            border-top: 1px solid var(--border-subtle);
            padding: 48px 0 28px;
            color: var(--text-secondary);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 36px;
        }

        .footer-col h4 {
            font-size: 0.9rem;
            font-weight: 700;
            letter-spacing: 0.04em;
            color: var(--text-primary);
            margin-bottom: 16px;
            text-transform: uppercase;
        }

        .footer-col a {
            display: block;
            font-size: 0.84rem;
            color: var(--text-muted);
            padding: 5px 0;
            transition: color var(--transition-fast);
        }

        .footer-col a:hover {
            color: var(--accent);
        }

        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            align-items: center;
            justify-content: space-between;
            padding-top: 20px;
            border-top: 1px solid var(--border-subtle);
            font-size: 0.78rem;
            color: var(--text-muted);
        }

        .footer-bottom a {
            color: var(--text-muted);
            transition: color var(--transition-fast);
        }

        .footer-bottom a:hover {
            color: var(--accent);
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .nav-center a {
                padding: 6px 10px;
                font-size: 0.8rem;
            }
            .nav-cta-btn {
                padding: 6px 14px;
                font-size: 0.78rem;
            }
            .replay-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .replay-card.span-2 {
                grid-column: span 2;
            }
            .replay-card.span-1 {
                grid-column: span 1;
            }
            .hot-spotlight-section .container {
                grid-template-columns: 1fr;
            }
            .spotlight-side {
                flex-direction: row;
                gap: 14px;
            }
            .spotlight-side-card {
                flex: 1;
                min-height: auto;
                flex-direction: column;
            }
            .spotlight-side-card .side-img {
                width: 100%;
                min-width: unset;
                height: 120px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .page-header-left h1 {
                font-size: 1.8rem;
            }
        }

        @media (max-width: 768px) {
            .nav-center {
                display: none;
            }
            .nav-hamburger {
                display: flex;
            }
            .nav-cta-btn {
                display: none;
            }
            .nav-right .nav-cta-btn-mobile {
                display: inline-block;
            }
            .replay-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 14px;
            }
            .replay-card.span-2 {
                grid-column: span 2;
            }
            .replay-card.span-1 {
                grid-column: span 1;
            }
            .replay-card.span-2 .card-img-wrap {
                height: 180px;
            }
            .replay-card.span-1 .card-img-wrap {
                height: 140px;
            }
            .page-header-section .container {
                flex-direction: column;
                gap: 20px;
            }
            .page-header-stats {
                gap: 18px;
            }
            .stat-number {
                font-size: 1.5rem;
            }
            .spotlight-side {
                flex-direction: column;
            }
            .spotlight-side-card {
                flex-direction: row;
            }
            .spotlight-side-card .side-img {
                width: 100px;
                min-width: 100px;
                height: auto;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .cta-block {
                padding: 32px 24px;
                flex-direction: column;
                text-align: center;
            }
            .cta-actions {
                justify-content: center;
            }
            .faq-section .section-title {
                font-size: 1.4rem;
            }
            .page-header-left h1 {
                font-size: 1.5rem;
            }
            .breadcrumb-bar {
                padding: 10px 0;
            }
            .tag-filter-section .container {
                gap: 6px;
            }
            .tag-filter-btn {
                padding: 6px 13px;
                font-size: 0.76rem;
            }
        }

        @media (max-width: 520px) {
            .replay-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .replay-card.span-2,
            .replay-card.span-1 {
                grid-column: span 1;
            }
            .replay-card.span-2 .card-img-wrap,
            .replay-card.span-1 .card-img-wrap {
                height: 200px;
            }
            .hot-spotlight-section .container {
                gap: 14px;
            }
            .spotlight-main .spotlight-img {
                height: 180px;
            }
            .spotlight-side-card {
                flex-direction: column;
            }
            .spotlight-side-card .side-img {
                width: 100%;
                min-width: unset;
                height: 140px;
            }
            .page-header-stats {
                gap: 12px;
                width: 100%;
                justify-content: space-around;
            }
            .stat-number {
                font-size: 1.3rem;
            }
            .stat-label {
                font-size: 0.7rem;
            }
            .container {
                padding: 0 16px;
            }
            .page-header-section {
                padding: 32px 0 20px;
            }
            .faq-section {
                padding: 40px 0;
            }
            .cta-section {
                padding: 40px 0;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
        }

/* roulang page: category2 */
:root {
            --bg-primary: #0D1117;
            --bg-secondary: #111820;
            --bg-card: #161C24;
            --bg-elevated: #1A212B;
            --accent: #B7F04A;
            --accent-hover: #C6FF5A;
            --accent-subtle: rgba(183, 240, 74, 0.10);
            --accent-subtle2: rgba(183, 240, 74, 0.18);
            --text-primary: #F5F7FA;
            --text-secondary: #C8CDD5;
            --text-muted: #8A94A6;
            --border-subtle: rgba(255, 255, 255, 0.08);
            --border-card: rgba(255, 255, 255, 0.06);
            --border-hover: rgba(183, 240, 74, 0.35);
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 14px;
            --radius-xl: 20px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.15);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.25);
            --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.35);
            --shadow-card-hover: 0 8px 28px rgba(0, 0, 0, 0.30);
            --transition-fast: 150ms ease-out;
            --transition-normal: 220ms ease-out;
            --transition-slow: 300ms ease-out;
            --font-stack: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
            --font-mono: 'SF Mono', 'JetBrains Mono', 'Fira Code', 'Consolas', 'Monaco', monospace;
            --container-max: 1280px;
            --section-gap-desktop: 88px;
            --section-gap-mobile: 52px;
            --nav-height: 60px;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            font-size: 16px;
        }
        body {
            font-family: var(--font-stack);
            background: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.75;
            min-height: 100vh;
            overflow-x: hidden;
            letter-spacing: 0.01em;
            padding-top: var(--nav-height);
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--accent);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button {
            cursor: pointer;
            border: none;
            font-family: inherit;
            font-size: inherit;
            transition: all var(--transition-fast);
            outline: none;
            background: none;
        }
        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        textarea:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
            border-radius: var(--radius-sm);
        }
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            color: var(--text-primary);
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 12px 16px;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
            width: 100%;
        }
        input:focus,
        textarea:focus,
        select:focus {
            border-color: var(--accent);
            box-shadow: 0 0 0 3px var(--accent-subtle);
            outline: none;
        }
        input::placeholder,
        textarea::placeholder {
            color: var(--text-muted);
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        /* ========== NAVIGATION ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-height);
            background: rgba(13, 17, 23, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-subtle);
            display: flex;
            align-items: center;
            transition: background var(--transition-normal);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }
        .nav-logo {
            font-weight: 800;
            font-size: 1.25rem;
            letter-spacing: 0.03em;
            color: var(--text-primary);
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
            flex-shrink: 0;
        }
        .nav-logo .logo-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--accent);
            display: inline-block;
            animation: logoPulse 2s ease-in-out infinite;
        }
        @keyframes logoPulse {
            0%,
            100% {
                box-shadow: 0 0 0 0 rgba(183, 240, 74, 0.6);
            }
            50% {
                box-shadow: 0 0 0 8px rgba(183, 240, 74, 0);
            }
        }
        .nav-center {
            display: flex;
            align-items: center;
            gap: 4px;
            flex: 1;
            justify-content: center;
        }
        .nav-center a {
            padding: 8px 14px;
            border-radius: var(--radius-sm);
            font-size: 0.88rem;
            font-weight: 500;
            color: var(--text-secondary);
            white-space: nowrap;
            transition: all var(--transition-fast);
            letter-spacing: 0.02em;
            position: relative;
        }
        .nav-center a:hover,
        .nav-center a.active {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.04);
        }
        .nav-center a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            border-radius: 2px;
            background: var(--accent);
        }
        .nav-right {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .nav-status-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--accent);
            display: inline-block;
            animation: statusBreath 2.5s ease-in-out infinite;
            cursor: default;
            flex-shrink: 0;
        }
        @keyframes statusBreath {
            0%,
            100% {
                opacity: 1;
                box-shadow: 0 0 0 0 rgba(183, 240, 74, 0.5);
            }
            50% {
                opacity: 0.6;
                box-shadow: 0 0 0 6px rgba(183, 240, 74, 0);
            }
        }
        .nav-notify-btn {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-secondary);
            background: rgba(255, 255, 255, 0.03);
            position: relative;
            transition: all var(--transition-fast);
            flex-shrink: 0;
        }
        .nav-notify-btn:hover {
            background: rgba(255, 255, 255, 0.08);
            color: var(--text-primary);
        }
        .nav-notify-btn .badge-dot {
            position: absolute;
            top: 6px;
            right: 6px;
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: #FF4D4F;
            border: 1.5px solid var(--bg-primary);
        }
        .nav-cta-btn {
            padding: 8px 18px;
            border-radius: var(--radius-md);
            font-size: 0.85rem;
            font-weight: 600;
            background: var(--accent);
            color: #0D1117;
            white-space: nowrap;
            letter-spacing: 0.02em;
            transition: all var(--transition-fast);
            flex-shrink: 0;
        }
        .nav-cta-btn:hover {
            background: var(--accent-hover);
            color: #0D1117;
            box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.2);
            transform: translateY(-1px);
        }
        .nav-hamburger {
            display: none;
            width: 36px;
            height: 36px;
            border-radius: var(--radius-sm);
            align-items: center;
            justify-content: center;
            color: var(--text-secondary);
            font-size: 1.2rem;
            background: rgba(255, 255, 255, 0.03);
            flex-shrink: 0;
        }
        .nav-hamburger:hover {
            background: rgba(255, 255, 255, 0.08);
            color: var(--text-primary);
        }
        /* ========== BREADCRUMB ========== */
        .breadcrumb-bar {
            background: var(--bg-secondary);
            border-bottom: 1px solid var(--border-subtle);
            padding: 12px 0;
        }
        .breadcrumb-bar .container {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.82rem;
            color: var(--text-muted);
            flex-wrap: wrap;
        }
        .breadcrumb-bar a {
            color: var(--text-secondary);
            transition: color var(--transition-fast);
        }
        .breadcrumb-bar a:hover {
            color: var(--accent);
        }
        .breadcrumb-bar .sep {
            color: var(--text-muted);
            font-size: 0.7rem;
        }
        .breadcrumb-bar .current {
            color: var(--accent);
            font-weight: 500;
        }
        /* ========== HERO ========== */
        .page-hero {
            position: relative;
            background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            min-height: 420px;
            display: flex;
            align-items: center;
            overflow: hidden;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(13, 17, 23, 0.75) 0%, rgba(13, 17, 23, 0.88) 60%, rgba(13, 17, 23, 0.96) 100%);
            z-index: 1;
        }
        .page-hero .container {
            position: relative;
            z-index: 2;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 40px;
            flex-wrap: wrap;
        }
        .hero-text {
            flex: 1;
            min-width: 280px;
        }
        .hero-text h1 {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: 0.04em;
            color: var(--text-primary);
            margin-bottom: 16px;
        }
        .hero-text h1 .accent-dot {
            color: var(--accent);
        }
        .hero-text .hero-sub {
            font-size: 1.05rem;
            color: var(--text-secondary);
            line-height: 1.7;
            max-width: 520px;
            margin-bottom: 24px;
        }
        .hero-actions {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 26px;
            border-radius: var(--radius-md);
            font-weight: 700;
            font-size: 0.95rem;
            background: var(--accent);
            color: #0D1117;
            letter-spacing: 0.02em;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .btn-primary:hover {
            background: var(--accent-hover);
            color: #0D1117;
            box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.2);
            transform: translateY(-2px);
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 0.95rem;
            background: transparent;
            color: var(--text-primary);
            border: 1px solid var(--border-subtle);
            letter-spacing: 0.02em;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .btn-outline:hover {
            border-color: var(--accent);
            background: var(--accent-subtle);
            color: var(--accent);
            transform: translateY(-2px);
        }
        .hero-stat-card {
            background: rgba(22, 28, 36, 0.85);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-lg);
            padding: 24px 28px;
            min-width: 200px;
            flex-shrink: 0;
        }
        .hero-stat-card .stat-num {
            font-family: var(--font-mono);
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--accent);
            line-height: 1;
            letter-spacing: 0.03em;
        }
        .hero-stat-card .stat-label {
            font-size: 0.82rem;
            color: var(--text-muted);
            margin-top: 6px;
            letter-spacing: 0.03em;
        }
        .hero-stat-card .stat-live {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.78rem;
            color: var(--accent);
            font-weight: 600;
            margin-top: 8px;
        }
        .hero-stat-card .stat-live .live-dot {
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: #FF4D4F;
            animation: statusBreath 1.5s ease-in-out infinite;
        }
        /* ========== TICKER ========== */
        .data-ticker {
            background: var(--bg-elevated);
            border-bottom: 1px solid var(--border-subtle);
            overflow: hidden;
            padding: 10px 0;
        }
        .data-ticker .ticker-track {
            display: flex;
            gap: 36px;
            animation: tickerScroll 40s linear infinite;
            white-space: nowrap;
            width: max-content;
        }
        @keyframes tickerScroll {
            0% {
                transform: translateX(0);
            }
            100% {
                transform: translateX(-50%);
            }
        }
        .ticker-item {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 0.84rem;
            color: var(--text-secondary);
            flex-shrink: 0;
        }
        .ticker-item .ticker-score {
            font-family: var(--font-mono);
            font-weight: 700;
            color: var(--accent);
            font-size: 0.9rem;
        }
        .ticker-item .ticker-status {
            font-size: 0.72rem;
            padding: 2px 8px;
            border-radius: 20px;
            background: var(--accent-subtle);
            color: var(--accent);
            font-weight: 600;
        }
        .ticker-item .ticker-status.live {
            background: rgba(255, 77, 79, 0.15);
            color: #FF4D4F;
        }
        /* ========== FILTER TOOLBAR ========== */
        .filter-toolbar {
            background: var(--bg-secondary);
            border-bottom: 1px solid var(--border-subtle);
            padding: 16px 0;
            position: sticky;
            top: var(--nav-height);
            z-index: 50;
        }
        .filter-toolbar .container {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
        }
        .filter-toolbar .filter-label {
            font-size: 0.82rem;
            font-weight: 600;
            color: var(--text-muted);
            letter-spacing: 0.03em;
            flex-shrink: 0;
        }
        .filter-toolbar select {
            width: auto;
            min-width: 130px;
            padding: 9px 14px;
            font-size: 0.84rem;
            border-radius: var(--radius-sm);
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            color: var(--text-primary);
            cursor: pointer;
            appearance: none;
            -webkit-appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%238A94A6' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'%3E%3C/path%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 10px center;
            padding-right: 32px;
        }
        .filter-toolbar select:focus {
            border-color: var(--accent);
        }
        .filter-toolbar .filter-search {
            width: auto;
            min-width: 200px;
            padding: 9px 14px;
            font-size: 0.84rem;
            border-radius: var(--radius-sm);
            flex: 0 1 240px;
        }
        .filter-toolbar .filter-btn {
            padding: 9px 18px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.84rem;
            background: var(--accent);
            color: #0D1117;
            transition: all var(--transition-fast);
            flex-shrink: 0;
        }
        .filter-toolbar .filter-btn:hover {
            background: var(--accent-hover);
            transform: translateY(-1px);
        }
        .filter-toolbar .filter-reset {
            padding: 9px 14px;
            border-radius: var(--radius-sm);
            font-size: 0.82rem;
            color: var(--text-muted);
            border: 1px solid var(--border-subtle);
            background: transparent;
            transition: all var(--transition-fast);
            flex-shrink: 0;
        }
        .filter-toolbar .filter-reset:hover {
            color: var(--text-primary);
            border-color: var(--border-hover);
        }
        /* ========== DATA TABLE ========== */
        .data-table-section {
            padding: var(--section-gap-desktop) 0;
        }
        .data-table-section .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.78rem;
            font-weight: 700;
            letter-spacing: 0.06em;
            color: var(--accent);
            text-transform: uppercase;
            margin-bottom: 8px;
        }
        .data-table-section .section-label::before {
            content: '';
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent);
            animation: statusBreath 2s ease-in-out infinite;
        }
        .data-table-section h2 {
            font-size: 2rem;
            font-weight: 800;
            letter-spacing: 0.03em;
            margin-bottom: 8px;
            color: var(--text-primary);
        }
        .data-table-section .section-desc {
            font-size: 0.95rem;
            color: var(--text-muted);
            margin-bottom: 28px;
            max-width: 600px;
            line-height: 1.7;
        }
        .table-wrapper {
            overflow-x: auto;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-card);
            background: var(--bg-card);
            -webkit-overflow-scrolling: touch;
        }
        .table-wrapper table {
            width: 100%;
            border-collapse: collapse;
            min-width: 860px;
            font-size: 0.88rem;
        }
        .table-wrapper thead {
            background: var(--bg-elevated);
        }
        .table-wrapper thead th {
            padding: 14px 16px;
            text-align: left;
            font-weight: 700;
            font-size: 0.78rem;
            letter-spacing: 0.04em;
            color: var(--text-muted);
            text-transform: uppercase;
            border-bottom: 1px solid var(--border-subtle);
            white-space: nowrap;
        }
        .table-wrapper tbody tr {
            border-bottom: 1px solid var(--border-card);
            transition: background var(--transition-fast);
        }
        .table-wrapper tbody tr:hover {
            background: rgba(255, 255, 255, 0.015);
        }
        .table-wrapper tbody tr:last-child {
            border-bottom: none;
        }
        .table-wrapper tbody td {
            padding: 13px 16px;
            color: var(--text-secondary);
            white-space: nowrap;
            vertical-align: middle;
        }
        .table-wrapper .match-teams {
            font-weight: 600;
            color: var(--text-primary);
            font-size: 0.9rem;
        }
        .table-wrapper .match-league {
            font-size: 0.78rem;
            color: var(--text-muted);
        }
        .badge-status {
            display: inline-block;
            padding: 4px 10px;
            border-radius: 20px;
            font-size: 0.74rem;
            font-weight: 600;
            letter-spacing: 0.03em;
        }
        .badge-status.upcoming {
            background: rgba(183, 240, 74, 0.12);
            color: var(--accent);
        }
        .badge-status.live {
            background: rgba(255, 77, 79, 0.15);
            color: #FF4D4F;
            animation: statusBreath 1.8s ease-in-out infinite;
        }
        .badge-status.finished {
            background: rgba(138, 148, 166, 0.12);
            color: var(--text-muted);
        }
        .table-link {
            color: var(--accent);
            font-weight: 600;
            font-size: 0.82rem;
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: all var(--transition-fast);
        }
        .table-link:hover {
            color: var(--accent-hover);
            gap: 8px;
        }
        .table-link i {
            font-size: 0.7rem;
            transition: transform var(--transition-fast);
        }
        .table-link:hover i {
            transform: translateX(3px);
        }
        /* ========== ALTERNATING LIST ========== */
        .alternating-section {
            padding: var(--section-gap-desktop) 0;
            background: var(--bg-secondary);
        }
        .alternating-section h2 {
            font-size: 2rem;
            font-weight: 800;
            letter-spacing: 0.03em;
            margin-bottom: 8px;
            color: var(--text-primary);
            text-align: center;
        }
        .alternating-section .section-desc {
            font-size: 0.95rem;
            color: var(--text-muted);
            margin-bottom: 40px;
            text-align: center;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.7;
        }
        .alternating-row {
            display: flex;
            align-items: center;
            gap: 48px;
            margin-bottom: 48px;
            flex-wrap: wrap;
        }
        .alternating-row:last-child {
            margin-bottom: 0;
        }
        .alternating-row.reverse {
            flex-direction: row-reverse;
        }
        .alternating-row .alt-image {
            flex: 0 0 42%;
            min-width: 280px;
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-card);
            box-shadow: var(--shadow-md);
            transition: all var(--transition-normal);
        }
        .alternating-row .alt-image:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
            border-color: var(--border-hover);
        }
        .alternating-row .alt-image img {
            width: 100%;
            height: auto;
            display: block;
            transition: transform var(--transition-slow);
        }
        .alternating-row .alt-image:hover img {
            transform: scale(1.03);
        }
        .alternating-row .alt-content {
            flex: 1;
            min-width: 260px;
        }
        .alt-content .alt-tag {
            display: inline-block;
            padding: 3px 10px;
            border-radius: 20px;
            font-size: 0.72rem;
            font-weight: 700;
            letter-spacing: 0.04em;
            background: var(--accent-subtle);
            color: var(--accent);
            margin-bottom: 10px;
        }
        .alt-content h3 {
            font-size: 1.5rem;
            font-weight: 700;
            letter-spacing: 0.03em;
            color: var(--text-primary);
            margin-bottom: 10px;
            line-height: 1.3;
        }
        .alt-content p {
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.75;
            margin-bottom: 16px;
        }
        .alt-content .alt-meta {
            display: flex;
            gap: 16px;
            font-size: 0.78rem;
            color: var(--text-muted);
            flex-wrap: wrap;
            margin-bottom: 14px;
        }
        .alt-content .alt-meta span {
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .alt-content .btn-sm {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 9px 18px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.84rem;
            background: var(--accent);
            color: #0D1117;
            transition: all var(--transition-fast);
        }
        .alt-content .btn-sm:hover {
            background: var(--accent-hover);
            transform: translateY(-2px);
            color: #0D1117;
        }
        /* ========== DEEP CONTENT ========== */
        .deep-content-section {
            padding: var(--section-gap-desktop) 0;
        }
        .deep-content-section h2 {
            font-size: 2rem;
            font-weight: 800;
            letter-spacing: 0.03em;
            margin-bottom: 24px;
            color: var(--text-primary);
        }
        .deep-content-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: start;
        }
        .deep-content-grid .deep-text {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.85;
        }
        .deep-content-grid .deep-text p {
            margin-bottom: 16px;
        }
        .deep-content-grid .deep-text p:last-child {
            margin-bottom: 0;
        }
        .deep-content-grid .deep-text .highlight-box {
            background: var(--bg-card);
            border-left: 3px solid var(--accent);
            padding: 16px 20px;
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            margin: 20px 0;
            font-weight: 500;
            color: var(--text-primary);
            line-height: 1.7;
        }
        .deep-content-grid .deep-visual {
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-card);
            box-shadow: var(--shadow-md);
        }
        .deep-content-grid .deep-visual img {
            width: 100%;
            height: auto;
            display: block;
        }
        .deep-content-grid .deep-visual .visual-caption {
            padding: 12px 16px;
            font-size: 0.78rem;
            color: var(--text-muted);
            background: var(--bg-card);
            text-align: center;
        }
        /* ========== STATS PANEL ========== */
        .stats-panel-section {
            padding: var(--section-gap-desktop) 0;
            background: var(--bg-elevated);
            border-top: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
        }
        .stats-panel-section h2 {
            font-size: 2rem;
            font-weight: 800;
            letter-spacing: 0.03em;
            margin-bottom: 8px;
            color: var(--text-primary);
            text-align: center;
        }
        .stats-panel-section .section-desc {
            font-size: 0.95rem;
            color: var(--text-muted);
            margin-bottom: 36px;
            text-align: center;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.7;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .stat-card {
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-lg);
            padding: 24px 20px;
            text-align: center;
            transition: all var(--transition-normal);
        }
        .stat-card:hover {
            border-color: var(--border-hover);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
        }
        .stat-card .stat-icon {
            font-size: 1.8rem;
            color: var(--accent);
            margin-bottom: 10px;
        }
        .stat-card .stat-value {
            font-family: var(--font-mono);
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: 0.03em;
            line-height: 1;
        }
        .stat-card .stat-label {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-top: 6px;
            letter-spacing: 0.03em;
        }
        /* ========== SUBSCRIBE ========== */
        .subscribe-section {
            padding: var(--section-gap-desktop) 0;
            background: var(--bg-secondary);
        }
        .subscribe-card {
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-xl);
            padding: 40px 36px;
            display: flex;
            align-items: center;
            gap: 32px;
            flex-wrap: wrap;
            transition: all var(--transition-normal);
        }
        .subscribe-card:hover {
            border-color: var(--border-hover);
            box-shadow: var(--shadow-lg);
        }
        .subscribe-card .sub-icon {
            font-size: 3rem;
            color: var(--accent);
            flex-shrink: 0;
        }
        .subscribe-card .sub-info {
            flex: 1;
            min-width: 240px;
        }
        .subscribe-card .sub-info h3 {
            font-size: 1.4rem;
            font-weight: 700;
            letter-spacing: 0.03em;
            color: var(--text-primary);
            margin-bottom: 6px;
        }
        .subscribe-card .sub-info p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.6;
        }
        .subscribe-card .sub-actions {
            flex-shrink: 0;
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
        }
        /* ========== FAQ ========== */
        .faq-section {
            padding: var(--section-gap-desktop) 0;
        }
        .faq-section h2 {
            font-size: 2rem;
            font-weight: 800;
            letter-spacing: 0.03em;
            margin-bottom: 8px;
            color: var(--text-primary);
            text-align: center;
        }
        .faq-section .section-desc {
            font-size: 0.95rem;
            color: var(--text-muted);
            margin-bottom: 36px;
            text-align: center;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.7;
        }
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            border: 1px solid var(--border-card);
            border-radius: var(--radius-md);
            margin-bottom: 10px;
            background: var(--bg-card);
            overflow: hidden;
            transition: all var(--transition-fast);
        }
        .faq-item:hover {
            border-color: var(--border-subtle);
        }
        .faq-item.active {
            border-color: var(--border-hover);
            background: var(--bg-elevated);
        }
        .faq-question {
            width: 100%;
            padding: 16px 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--text-primary);
            letter-spacing: 0.02em;
            background: transparent;
            text-align: left;
            gap: 12px;
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.04);
            font-size: 0.7rem;
            color: var(--text-muted);
            transition: all var(--transition-fast);
        }
        .faq-item.active .faq-icon {
            background: var(--accent-subtle);
            color: var(--accent);
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-slow);
            padding: 0 20px;
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.75;
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 20px 18px;
        }
        /* ========== CTA ========== */
        .cta-section {
            padding: var(--section-gap-desktop) 0;
            background: var(--bg-secondary);
        }
        .cta-block {
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-xl);
            padding: 44px 36px;
            text-align: center;
            transition: all var(--transition-normal);
        }
        .cta-block:hover {
            border-color: var(--border-hover);
            box-shadow: var(--shadow-lg);
        }
        .cta-block h2 {
            font-size: 2rem;
            font-weight: 800;
            letter-spacing: 0.03em;
            color: var(--text-primary);
            margin-bottom: 10px;
        }
        .cta-block p {
            font-size: 0.95rem;
            color: var(--text-muted);
            margin-bottom: 24px;
            max-width: 520px;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.7;
        }
        .cta-block .cta-actions {
            display: flex;
            gap: 12px;
            justify-content: center;
            flex-wrap: wrap;
        }
        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--bg-primary);
            border-top: 1px solid var(--border-subtle);
            padding: 48px 0 24px;
            color: var(--text-muted);
            font-size: 0.84rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-col h4 {
            font-weight: 700;
            font-size: 0.9rem;
            letter-spacing: 0.04em;
            color: var(--text-primary);
            margin-bottom: 14px;
        }
        .footer-col a {
            display: block;
            color: var(--text-muted);
            padding: 4px 0;
            font-size: 0.82rem;
            transition: color var(--transition-fast);
        }
        .footer-col a:hover {
            color: var(--accent);
        }
        .footer-bottom {
            border-top: 1px solid var(--border-subtle);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: space-between;
            align-items: center;
            font-size: 0.78rem;
            color: var(--text-muted);
        }
        .footer-bottom a {
            color: var(--text-muted);
            transition: color var(--transition-fast);
        }
        .footer-bottom a:hover {
            color: var(--accent);
        }
        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .nav-center {
                gap: 1px;
            }
            .nav-center a {
                padding: 8px 10px;
                font-size: 0.8rem;
            }
            .page-hero .container {
                flex-direction: column;
                text-align: center;
                align-items: center;
            }
            .hero-text h1 {
                font-size: 2.2rem;
            }
            .hero-text .hero-sub {
                max-width: 100%;
            }
            .hero-actions {
                justify-content: center;
            }
            .hero-stat-card {
                min-width: auto;
            }
            .deep-content-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .alternating-row {
                gap: 28px;
            }
            .alternating-row .alt-image {
                flex: 0 0 100%;
            }
            .table-wrapper {
                border-radius: var(--radius-md);
            }
        }
        @media (max-width: 768px) {
            .nav-center {
                display: none;
            }
            .nav-hamburger {
                display: flex;
            }
            .nav-cta-btn {
                display: none;
            }
            .page-hero {
                min-height: 340px;
            }
            .hero-text h1 {
                font-size: 1.8rem;
            }
            .hero-text .hero-sub {
                font-size: 0.9rem;
            }
            .filter-toolbar .container {
                flex-direction: column;
                align-items: stretch;
                gap: 8px;
            }
            .filter-toolbar select,
            .filter-toolbar .filter-search {
                width: 100%;
                min-width: auto;
            }
            .data-table-section h2 {
                font-size: 1.5rem;
            }
            .alternating-row {
                flex-direction: column !important;
                gap: 20px;
            }
            .alternating-row .alt-image {
                flex: 0 0 auto;
                width: 100%;
                min-width: auto;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-card .stat-value {
                font-size: 1.6rem;
            }
            .subscribe-card {
                flex-direction: column;
                text-align: center;
                padding: 28px 20px;
            }
            .subscribe-card .sub-actions {
                justify-content: center;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
            .cta-block {
                padding: 28px 20px;
            }
            .cta-block h2 {
                font-size: 1.5rem;
            }
            :root {
                --section-gap-desktop: 52px;
            }
            .data-table-section {
                padding: var(--section-gap-mobile) 0;
            }
            .alternating-section {
                padding: var(--section-gap-mobile) 0;
            }
            .deep-content-section {
                padding: var(--section-gap-mobile) 0;
            }
            .stats-panel-section {
                padding: var(--section-gap-mobile) 0;
            }
            .subscribe-section {
                padding: var(--section-gap-mobile) 0;
            }
            .faq-section {
                padding: var(--section-gap-mobile) 0;
            }
            .cta-section {
                padding: var(--section-gap-mobile) 0;
            }
        }
        @media (max-width: 520px) {
            .hero-text h1 {
                font-size: 1.5rem;
            }
            .hero-stat-card {
                padding: 16px 18px;
            }
            .hero-stat-card .stat-num {
                font-size: 2rem;
            }
            .stats-grid {
                grid-template-columns: 1fr;
                gap: 10px;
            }
            .table-wrapper table {
                min-width: 640px;
                font-size: 0.78rem;
            }
            .table-wrapper thead th,
            .table-wrapper tbody td {
                padding: 10px 10px;
            }
            .deep-content-grid .deep-text {
                font-size: 0.88rem;
            }
            .alt-content h3 {
                font-size: 1.2rem;
            }
            .faq-question {
                font-size: 0.88rem;
                padding: 14px 16px;
            }
            .btn-primary,
            .btn-outline {
                padding: 10px 18px;
                font-size: 0.85rem;
            }
        }
        /* Mobile nav drawer */
        .nav-drawer {
            display: none;
            position: fixed;
            top: var(--nav-height);
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(13, 17, 23, 0.97);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            z-index: 999;
            flex-direction: column;
            padding: 20px 24px;
            gap: 4px;
            overflow-y: auto;
        }
        .nav-drawer.open {
            display: flex;
        }
        .nav-drawer a {
            display: block;
            padding: 14px 18px;
            border-radius: var(--radius-md);
            font-size: 1rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
        }
        .nav-drawer a:hover,
        .nav-drawer a.active {
            background: rgba(255, 255, 255, 0.04);
            color: var(--text-primary);
        }
        .nav-drawer a.active {
            border-left: 3px solid var(--accent);
        }
        .nav-drawer .drawer-cta {
            margin-top: 12px;
            padding: 12px 20px;
            text-align: center;
            background: var(--accent);
            color: #0D1117;
            border-radius: var(--radius-md);
            font-weight: 700;
            font-size: 0.95rem;
        }

/* roulang page: category5 */
:root {
            --bg-primary: #0D1117;
            --bg-secondary: #111820;
            --bg-card: #161C24;
            --bg-elevated: #1A212B;
            --accent: #B7F04A;
            --accent-hover: #C6FF5A;
            --accent-subtle: rgba(183, 240, 74, 0.10);
            --accent-subtle2: rgba(183, 240, 74, 0.18);
            --text-primary: #F5F7FA;
            --text-secondary: #C8CDD5;
            --text-muted: #8A94A6;
            --border-subtle: rgba(255, 255, 255, 0.08);
            --border-card: rgba(255, 255, 255, 0.06);
            --border-hover: rgba(183, 240, 74, 0.35);
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 14px;
            --radius-xl: 20px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.15);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.25);
            --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.35);
            --shadow-card-hover: 0 8px 28px rgba(0, 0, 0, 0.30);
            --transition-fast: 150ms ease-out;
            --transition-normal: 220ms ease-out;
            --transition-slow: 300ms ease-out;
            --font-stack: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
            --font-mono: 'SF Mono', 'JetBrains Mono', 'Fira Code', 'Consolas', 'Monaco', monospace;
            --container-max: 1280px;
            --section-gap-desktop: 96px;
            --section-gap-mobile: 56px;
            --nav-height: 60px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            font-size: 16px;
        }

        body {
            font-family: var(--font-stack);
            background: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.75;
            min-height: 100vh;
            overflow-x: hidden;
            letter-spacing: 0.01em;
            padding-top: var(--nav-height);
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        a:hover {
            color: var(--accent);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button {
            cursor: pointer;
            border: none;
            font-family: inherit;
            font-size: inherit;
            transition: all var(--transition-fast);
            outline: none;
        }

        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        textarea:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
            border-radius: var(--radius-sm);
        }

        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            color: var(--text-primary);
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 12px 16px;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
            width: 100%;
        }

        input:focus,
        textarea:focus,
        select:focus {
            border-color: var(--accent);
            box-shadow: 0 0 0 3px var(--accent-subtle);
            outline: none;
        }

        input::placeholder,
        textarea::placeholder {
            color: var(--text-muted);
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ========== NAVIGATION ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-height);
            background: rgba(13, 17, 23, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-subtle);
            display: flex;
            align-items: center;
            transition: background var(--transition-normal);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }

        .nav-logo {
            font-weight: 800;
            font-size: 1.25rem;
            letter-spacing: 0.03em;
            color: var(--text-primary);
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
            flex-shrink: 0;
        }

        .nav-logo .logo-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--accent);
            display: inline-block;
            animation: logoPulse 2s ease-in-out infinite;
        }

        @keyframes logoPulse {
            0%,
            100% {
                box-shadow: 0 0 0 0 rgba(183, 240, 74, 0.6);
            }
            50% {
                box-shadow: 0 0 0 8px rgba(183, 240, 74, 0);
            }
        }

        .nav-center {
            display: flex;
            align-items: center;
            gap: 4px;
            flex: 1;
            justify-content: center;
        }

        .nav-center a {
            padding: 8px 14px;
            border-radius: var(--radius-sm);
            font-size: 0.88rem;
            font-weight: 500;
            color: var(--text-secondary);
            white-space: nowrap;
            transition: all var(--transition-fast);
            letter-spacing: 0.02em;
            position: relative;
        }

        .nav-center a:hover,
        .nav-center a.active {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.04);
        }

        .nav-center a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 18px;
            height: 2px;
            background: var(--accent);
            border-radius: 1px;
        }

        .nav-right {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .nav-status-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--accent);
            animation: statusBreath 1.8s ease-in-out infinite;
            cursor: default;
        }

        @keyframes statusBreath {
            0%,
            100% {
                opacity: 1;
            }
            50% {
                opacity: 0.35;
            }
        }

        .nav-notify-btn {
            background: transparent;
            color: var(--text-secondary);
            font-size: 1.1rem;
            padding: 6px 8px;
            border-radius: var(--radius-sm);
            position: relative;
            transition: all var(--transition-fast);
        }

        .nav-notify-btn:hover {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.06);
        }

        .nav-notify-btn .badge-dot {
            position: absolute;
            top: 4px;
            right: 4px;
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: #FF5C5C;
            border: 1.5px solid var(--bg-primary);
        }

        .nav-cta-btn {
            background: var(--accent);
            color: #0D1117;
            font-weight: 700;
            font-size: 0.85rem;
            padding: 9px 18px;
            border-radius: var(--radius-md);
            letter-spacing: 0.03em;
            white-space: nowrap;
            transition: all var(--transition-fast);
        }

        .nav-cta-btn:hover {
            background: var(--accent-hover);
            color: #0D1117;
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
        }

        .nav-hamburger {
            display: none;
            background: transparent;
            color: var(--text-primary);
            font-size: 1.3rem;
            padding: 6px 8px;
            border-radius: var(--radius-sm);
        }

        .nav-hamburger:hover {
            background: rgba(255, 255, 255, 0.06);
        }

        /* Mobile Nav */
        @media (max-width: 1024px) {
            .nav-center {
                display: none;
            }
            .nav-hamburger {
                display: block;
            }
            .nav-cta-btn {
                font-size: 0.8rem;
                padding: 7px 14px;
            }
            .nav-center.open {
                display: flex;
                flex-direction: column;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: rgba(13, 17, 23, 0.97);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                border-bottom: 1px solid var(--border-subtle);
                padding: 16px 24px;
                gap: 2px;
                z-index: 999;
            }
            .nav-center.open a {
                width: 100%;
                padding: 12px 16px;
                border-radius: var(--radius-md);
                font-size: 0.95rem;
            }
            .nav-center.open a.active::after {
                display: none;
            }
        }

        @media (max-width: 520px) {
            .nav-logo {
                font-size: 1.05rem;
                gap: 6px;
            }
            .nav-logo .logo-dot {
                width: 8px;
                height: 8px;
            }
            .nav-cta-btn {
                font-size: 0.75rem;
                padding: 6px 10px;
            }
            .nav-notify-btn {
                font-size: 1rem;
                padding: 4px 6px;
            }
        }

        /* ========== HERO ========== */
        .hero-section {
            position: relative;
            min-height: 85vh;
            display: flex;
            align-items: center;
            overflow: hidden;
            background: var(--bg-primary);
        }

        .hero-bg {
            position: absolute;
            inset: 0;
            z-index: 0;
        }

        .hero-bg img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            object-position: center 30%;
        }

        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(13, 17, 23, 0.55) 0%, rgba(13, 17, 23, 0.78) 40%, rgba(13, 17, 23, 0.92) 100%);
            z-index: 1;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 780px;
            padding: 80px 0 60px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--accent-subtle2);
            border: 1px solid var(--border-hover);
            color: var(--accent);
            font-size: 0.82rem;
            font-weight: 600;
            padding: 6px 14px;
            border-radius: 20px;
            letter-spacing: 0.04em;
            margin-bottom: 24px;
        }

        .hero-badge .badge-dot-pulse {
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: var(--accent);
            animation: statusBreath 1.4s ease-in-out infinite;
        }

        .hero-content h1 {
            font-size: 3.2rem;
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: 0.02em;
            color: var(--text-primary);
            margin-bottom: 18px;
        }

        .hero-content h1 .highlight {
            color: var(--accent);
            position: relative;
        }

        .hero-content .hero-subtitle {
            font-size: 1.15rem;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 32px;
            max-width: 600px;
        }

        .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }

        .btn-primary {
            background: var(--accent);
            color: #0D1117;
            font-weight: 700;
            font-size: 0.95rem;
            padding: 13px 28px;
            border-radius: var(--radius-md);
            letter-spacing: 0.03em;
            transition: all var(--transition-normal);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
        }

        .btn-primary:hover {
            background: var(--accent-hover);
            color: #0D1117;
            transform: translateY(-2px);
            box-shadow: var(--shadow-lg);
        }

        .btn-secondary {
            background: transparent;
            color: var(--text-primary);
            font-weight: 600;
            font-size: 0.95rem;
            padding: 13px 28px;
            border-radius: var(--radius-md);
            border: 1px solid rgba(255, 255, 255, 0.25);
            letter-spacing: 0.03em;
            transition: all var(--transition-normal);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
        }

        .btn-secondary:hover {
            border-color: var(--accent);
            color: var(--accent);
            background: var(--accent-subtle);
            transform: translateY(-2px);
        }

        .hero-data-float {
            position: absolute;
            right: 6%;
            top: 28%;
            z-index: 2;
            background: var(--bg-elevated);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-lg);
            padding: 20px 24px;
            box-shadow: var(--shadow-lg);
            min-width: 200px;
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
        }

        .hero-data-float .data-label {
            font-size: 0.7rem;
            color: var(--text-muted);
            text-transform: uppercase;
            letter-spacing: 0.08em;
            margin-bottom: 6px;
        }

        .hero-data-float .data-value {
            font-family: var(--font-mono);
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--accent);
            line-height: 1;
        }

        .hero-data-float .data-sub {
            font-size: 0.78rem;
            color: var(--text-secondary);
            margin-top: 4px;
        }

        @media (max-width: 1024px) {
            .hero-content h1 {
                font-size: 2.4rem;
            }
            .hero-data-float {
                display: none;
            }
            .hero-content {
                padding: 60px 0 40px;
            }
            .hero-section {
                min-height: 65vh;
            }
        }

        @media (max-width: 768px) {
            .hero-content h1 {
                font-size: 1.8rem;
            }
            .hero-content .hero-subtitle {
                font-size: 1rem;
            }
            .hero-section {
                min-height: 55vh;
            }
            .btn-primary,
            .btn-secondary {
                font-size: 0.85rem;
                padding: 11px 20px;
            }
            .hero-badge {
                font-size: 0.7rem;
                padding: 5px 10px;
            }
        }

        /* ========== TICKER ========== */
        .ticker-bar {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
            overflow: hidden;
            padding: 10px 0;
        }

        .ticker-scroll {
            display: flex;
            gap: 40px;
            animation: tickerScroll 30s linear infinite;
            white-space: nowrap;
            width: max-content;
        }

        .ticker-item {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.82rem;
            color: var(--text-secondary);
            flex-shrink: 0;
        }

        .ticker-item .ticker-dot {
            width: 5px;
            height: 5px;
            border-radius: 50%;
            background: var(--accent);
            flex-shrink: 0;
        }

        .ticker-item .ticker-highlight {
            color: var(--accent);
            font-weight: 600;
        }

        @keyframes tickerScroll {
            0% {
                transform: translateX(0);
            }
            100% {
                transform: translateX(-50%);
            }
        }

        /* ========== SECTION COMMON ========== */
        .section {
            padding: var(--section-gap-desktop) 0;
        }

        .section-label {
            font-size: 0.75rem;
            color: var(--accent);
            text-transform: uppercase;
            letter-spacing: 0.1em;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .section-title {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: 0.02em;
            margin-bottom: 12px;
            line-height: 1.25;
        }

        .section-desc {
            font-size: 1rem;
            color: var(--text-muted);
            line-height: 1.8;
            max-width: 640px;
        }

        @media (max-width: 768px) {
            .section {
                padding: var(--section-gap-mobile) 0;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .section-desc {
                font-size: 0.9rem;
            }
        }

        /* ========== DATA PANEL ========== */
        .data-panel-section {
            background: var(--bg-secondary);
            padding: 60px 0;
        }

        .data-panel-grid {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr;
            gap: 20px;
        }

        .data-panel-card {
            background: var(--bg-elevated);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            transition: all var(--transition-normal);
            position: relative;
            overflow: hidden;
        }

        .data-panel-card:hover {
            border-color: var(--border-hover);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }

        .data-panel-card .panel-icon {
            font-size: 1.6rem;
            color: var(--accent);
            margin-bottom: 14px;
        }

        .data-panel-card .panel-value {
            font-family: var(--font-mono);
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--text-primary);
            line-height: 1;
            margin-bottom: 6px;
        }

        .data-panel-card .panel-value .unit {
            font-size: 1rem;
            font-weight: 400;
            color: var(--text-muted);
            margin-left: 4px;
        }

        .data-panel-card .panel-label {
            font-size: 0.85rem;
            color: var(--text-muted);
            letter-spacing: 0.04em;
        }

        .data-panel-card .panel-stripe {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: linear-gradient(90deg, var(--accent) 0%, transparent 80%);
            border-radius: 3px 0 0 0;
        }

        @media (max-width: 768px) {
            .data-panel-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .data-panel-card {
                padding: 20px 16px;
            }
            .data-panel-card .panel-value {
                font-size: 1.8rem;
            }
        }

        @media (max-width: 520px) {
            .data-panel-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ========== FEATURE SPLIT ========== */
        .feature-split {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .feature-split.reverse {
            direction: rtl;
        }

        .feature-split.reverse>* {
            direction: ltr;
        }

        .feature-split .feature-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-card);
            box-shadow: var(--shadow-md);
        }

        .feature-split .feature-image img {
            width: 100%;
            height: auto;
            display: block;
            transition: transform var(--transition-slow);
        }

        .feature-split .feature-image:hover img {
            transform: scale(1.03);
        }

        .feature-split .feature-text h3 {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 14px;
            letter-spacing: 0.02em;
        }

        .feature-split .feature-text p {
            color: var(--text-secondary);
            line-height: 1.85;
            margin-bottom: 16px;
            font-size: 0.95rem;
        }

        .feature-split .feature-text .feature-list {
            list-style: none;
            padding: 0;
        }

        .feature-split .feature-text .feature-list li {
            padding: 8px 0;
            border-bottom: 1px solid var(--border-subtle);
            color: var(--text-secondary);
            font-size: 0.9rem;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .feature-split .feature-text .feature-list li::before {
            content: '';
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent);
            flex-shrink: 0;
        }

        @media (max-width: 768px) {
            .feature-split {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .feature-split .feature-text h3 {
                font-size: 1.25rem;
            }
        }

        /* ========== PLAN COMPARISON ========== */
        .plan-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .plan-card {
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-lg);
            padding: 32px 24px;
            transition: all var(--transition-normal);
            position: relative;
        }

        .plan-card:hover {
            border-color: var(--border-hover);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
        }

        .plan-card.featured {
            border-color: var(--accent);
            background: var(--bg-elevated);
            box-shadow: 0 0 0 1px var(--accent-subtle), var(--shadow-md);
        }

        .plan-card .plan-badge {
            position: absolute;
            top: -12px;
            right: 20px;
            background: var(--accent);
            color: #0D1117;
            font-size: 0.7rem;
            font-weight: 700;
            padding: 4px 12px;
            border-radius: 12px;
            letter-spacing: 0.06em;
        }

        .plan-card .plan-name {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 6px;
        }

        .plan-card .plan-price {
            font-family: var(--font-mono);
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--accent);
            margin-bottom: 16px;
        }

        .plan-card .plan-price .plan-period {
            font-size: 0.8rem;
            font-weight: 400;
            color: var(--text-muted);
        }

        .plan-card .plan-features {
            list-style: none;
            padding: 0;
            margin-bottom: 20px;
        }

        .plan-card .plan-features li {
            padding: 7px 0;
            font-size: 0.85rem;
            color: var(--text-secondary);
            border-bottom: 1px solid var(--border-subtle);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .plan-card .plan-features li i {
            color: var(--accent);
            font-size: 0.7rem;
            flex-shrink: 0;
        }

        .plan-card .btn-plan {
            width: 100%;
            text-align: center;
            padding: 12px;
            border-radius: var(--radius-md);
            font-weight: 700;
            font-size: 0.9rem;
            letter-spacing: 0.03em;
            transition: all var(--transition-fast);
            background: var(--accent);
            color: #0D1117;
            display: block;
        }

        .plan-card .btn-plan:hover {
            background: var(--accent-hover);
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
        }

        .plan-card.featured .btn-plan {
            background: var(--accent);
            color: #0D1117;
        }

        @media (max-width: 900px) {
            .plan-grid {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }
            .plan-card.featured {
                grid-column: span 2;
            }
        }

        @media (max-width: 600px) {
            .plan-grid {
                grid-template-columns: 1fr;
            }
            .plan-card.featured {
                grid-column: span 1;
            }
        }

        /* ========== DEEP CONTENT ========== */
        .deep-content {
            background: var(--bg-secondary);
            border-radius: var(--radius-xl);
            padding: 48px 40px;
            border: 1px solid var(--border-card);
        }

        .deep-content h3 {
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 16px;
            letter-spacing: 0.02em;
        }

        .deep-content p {
            color: var(--text-secondary);
            line-height: 1.9;
            margin-bottom: 14px;
            font-size: 0.95rem;
        }

        .deep-content .content-grid-2 {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
            margin-top: 24px;
        }

        .deep-content .content-block {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 20px;
            border: 1px solid var(--border-subtle);
        }

        .deep-content .content-block h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--accent);
            margin-bottom: 8px;
        }

        .deep-content .content-block p {
            font-size: 0.88rem;
            margin-bottom: 0;
        }

        @media (max-width: 768px) {
            .deep-content {
                padding: 28px 20px;
            }
            .deep-content .content-grid-2 {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .deep-content h3 {
                font-size: 1.2rem;
            }
        }

        /* ========== PROCESS ========== */
        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            counter-reset: step;
        }

        .process-step {
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-lg);
            padding: 28px 20px;
            text-align: center;
            transition: all var(--transition-normal);
            position: relative;
        }

        .process-step:hover {
            border-color: var(--border-hover);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
        }

        .process-step .step-number {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--accent-subtle2);
            color: var(--accent);
            font-weight: 800;
            font-size: 1.2rem;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 14px;
            font-family: var(--font-mono);
        }

        .process-step h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 6px;
        }

        .process-step p {
            font-size: 0.82rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        @media (max-width: 900px) {
            .process-steps {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }
        }

        @media (max-width: 520px) {
            .process-steps {
                grid-template-columns: 1fr;
            }
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            border-bottom: 1px solid var(--border-subtle);
            overflow: hidden;
        }

        .faq-question {
            width: 100%;
            text-align: left;
            background: transparent;
            color: var(--text-primary);
            font-weight: 600;
            font-size: 1rem;
            padding: 18px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            letter-spacing: 0.02em;
            transition: color var(--transition-fast);
        }

        .faq-question:hover {
            color: var(--accent);
        }

        .faq-question .faq-icon {
            width: 24px;
            height: 24px;
            flex-shrink: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: transform var(--transition-normal);
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        .faq-item.open .faq-question .faq-icon {
            transform: rotate(45deg);
            color: var(--accent);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-slow);
            color: var(--text-secondary);
            font-size: 0.9rem;
            line-height: 1.8;
        }

        .faq-item.open .faq-answer {
            max-height: 400px;
            padding-bottom: 18px;
        }

        /* ========== CTA ========== */
        .cta-section {
            background: var(--bg-secondary);
            border-radius: var(--radius-xl);
            padding: 56px 40px;
            text-align: center;
            border: 1px solid var(--border-card);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            left: 50%;
            transform: translateX(-50%);
            width: 200px;
            height: 200px;
            background: radial-gradient(circle, rgba(183, 240, 74, 0.12) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-section h2 {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 12px;
            position: relative;
            z-index: 1;
        }

        .cta-section p {
            color: var(--text-secondary);
            margin-bottom: 24px;
            position: relative;
            z-index: 1;
            font-size: 1rem;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
        }

        .cta-section .btn-primary {
            position: relative;
            z-index: 1;
            font-size: 1rem;
            padding: 15px 36px;
        }

        @media (max-width: 768px) {
            .cta-section {
                padding: 36px 20px;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
        }

        /* ========== BRAND INTRO ========== */
        .brand-intro-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
            background: var(--bg-card);
            border-radius: var(--radius-xl);
            padding: 40px;
            border: 1px solid var(--border-card);
        }

        .brand-intro-block .brand-text h3 {
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 14px;
            letter-spacing: 0.02em;
        }

        .brand-intro-block .brand-text p {
            color: var(--text-secondary);
            line-height: 1.85;
            font-size: 0.95rem;
            margin-bottom: 10px;
        }

        .brand-intro-block .brand-badges {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        .brand-badge-item {
            background: var(--bg-elevated);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-md);
            padding: 16px 20px;
            text-align: center;
            flex: 1;
            min-width: 100px;
        }

        .brand-badge-item .badge-num {
            font-family: var(--font-mono);
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--accent);
            line-height: 1;
        }

        .brand-badge-item .badge-label {
            font-size: 0.72rem;
            color: var(--text-muted);
            margin-top: 4px;
            letter-spacing: 0.04em;
        }

        @media (max-width: 768px) {
            .brand-intro-block {
                grid-template-columns: 1fr;
                gap: 24px;
                padding: 24px 20px;
            }
            .brand-intro-block .brand-text h3 {
                font-size: 1.2rem;
            }
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #0A0F14;
            border-top: 1px solid var(--border-subtle);
            padding: 48px 0 24px;
            margin-top: 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }

        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 14px;
            letter-spacing: 0.03em;
        }

        .footer-col a {
            display: block;
            font-size: 0.85rem;
            color: var(--text-muted);
            padding: 5px 0;
            transition: color var(--transition-fast);
        }

        .footer-col a:hover {
            color: var(--accent);
        }

        .footer-bottom {
            border-top: 1px solid var(--border-subtle);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            font-size: 0.78rem;
            color: var(--text-muted);
            justify-content: space-between;
            align-items: center;
        }

        .footer-bottom a {
            color: var(--text-muted);
        }

        .footer-bottom a:hover {
            color: var(--accent);
        }

        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
        }

        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ========== UTILITY ANIMATIONS ========== */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(24px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .animate-in {
            animation: fadeInUp 0.5s ease-out forwards;
        }

        /* ========== MOBILE NAV DRAWER ========== */
        .nav-drawer-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.5);
            z-index: 998;
        }

        .nav-drawer-overlay.show {
            display: block;
        }

/* roulang page: category6 */
:root {
            --bg-primary: #0D1117;
            --bg-secondary: #111820;
            --bg-card: #161C24;
            --bg-elevated: #1A212B;
            --accent: #B7F04A;
            --accent-hover: #C6FF5A;
            --accent-subtle: rgba(183, 240, 74, 0.10);
            --text-primary: #F5F7FA;
            --text-secondary: #C8CDD5;
            --text-muted: #8A94A6;
            --border-subtle: rgba(255, 255, 255, 0.08);
            --border-card: rgba(255, 255, 255, 0.06);
            --border-hover: rgba(183, 240, 74, 0.35);
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 14px;
            --radius-xl: 20px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.15);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.25);
            --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.35);
            --shadow-card-hover: 0 8px 28px rgba(0, 0, 0, 0.30);
            --transition-fast: 150ms ease-out;
            --transition-normal: 220ms ease-out;
            --transition-slow: 300ms ease-out;
            --font-stack: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
            --font-mono: 'SF Mono', 'JetBrains Mono', 'Fira Code', 'Consolas', 'Monaco', monospace;
            --container-max: 1280px;
            --section-gap-desktop: 96px;
            --section-gap-mobile: 56px;
            --nav-height: 60px;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            font-size: 16px;
        }

        body {
            font-family: var(--font-stack);
            background: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.75;
            min-height: 100vh;
            overflow-x: hidden;
            letter-spacing: 0.01em;
            margin: 0;
            padding: 0;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        a:hover {
            color: var(--accent);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button {
            cursor: pointer;
            border: none;
            font-family: inherit;
            font-size: inherit;
            transition: all var(--transition-fast);
            outline: none;
            background: none;
        }

        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        textarea:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
            border-radius: var(--radius-sm);
        }

        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            color: var(--text-primary);
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 12px 16px;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
            width: 100%;
        }

        input:focus,
        textarea:focus,
        select:focus {
            border-color: var(--accent);
            box-shadow: 0 0 0 3px var(--accent-subtle);
            outline: none;
        }

        input::placeholder,
        textarea::placeholder {
            color: var(--text-muted);
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ========== NAVIGATION ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-height);
            background: rgba(13, 17, 23, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-subtle);
            display: flex;
            align-items: center;
            transition: background var(--transition-normal);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }

        .nav-logo {
            font-weight: 800;
            font-size: 1.25rem;
            letter-spacing: 0.03em;
            color: var(--text-primary);
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
            flex-shrink: 0;
        }

        .nav-logo .logo-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--accent);
            display: inline-block;
            animation: logoPulse 2s ease-in-out infinite;
        }

        @keyframes logoPulse {
            0%,
            100% {
                box-shadow: 0 0 0 0 rgba(183, 240, 74, 0.6);
            }
            50% {
                box-shadow: 0 0 0 8px rgba(183, 240, 74, 0);
            }
        }

        .nav-center {
            display: flex;
            align-items: center;
            gap: 4px;
            flex: 1;
            justify-content: center;
        }

        .nav-center a {
            padding: 8px 14px;
            border-radius: var(--radius-sm);
            font-size: 0.88rem;
            font-weight: 500;
            color: var(--text-secondary);
            white-space: nowrap;
            transition: all var(--transition-fast);
            letter-spacing: 0.02em;
            position: relative;
        }

        .nav-center a:hover {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.04);
        }

        .nav-center a.active {
            color: var(--accent);
            background: rgba(183, 240, 74, 0.06);
            font-weight: 600;
        }

        .nav-center a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--accent);
            border-radius: 1px;
        }

        .nav-right {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .nav-status-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--accent);
            display: inline-block;
            animation: statusBreath 2.5s ease-in-out infinite;
            cursor: default;
            flex-shrink: 0;
        }

        @keyframes statusBreath {
            0%,
            100% {
                opacity: 1;
                box-shadow: 0 0 0 0 rgba(183, 240, 74, 0.7);
            }
            50% {
                opacity: 0.5;
                box-shadow: 0 0 0 6px rgba(183, 240, 74, 0);
            }
        }

        .nav-notify-btn {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: transparent;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
            font-size: 1.05rem;
            transition: all var(--transition-fast);
            flex-shrink: 0;
        }

        .nav-notify-btn:hover {
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-primary);
        }

        .badge-dot {
            position: absolute;
            top: 7px;
            right: 7px;
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: #FF4D4F;
            border: 1.5px solid var(--bg-primary);
        }

        .nav-cta-btn {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            background: var(--accent);
            color: #0D1117;
            font-weight: 700;
            font-size: 0.85rem;
            letter-spacing: 0.03em;
            white-space: nowrap;
            transition: all var(--transition-fast);
            flex-shrink: 0;
        }

        .nav-cta-btn:hover {
            background: var(--accent-hover);
            color: #0D1117;
            box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.25);
            transform: translateY(-1px);
        }

        .nav-hamburger {
            display: none;
            width: 38px;
            height: 38px;
            border-radius: var(--radius-sm);
            background: transparent;
            color: var(--text-secondary);
            font-size: 1.2rem;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        .nav-hamburger:hover {
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-primary);
        }

        /* ========== MOBILE NAV DRAWER ========== */
        .mobile-nav-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(0, 0, 0, 0.7);
            z-index: 1001;
            opacity: 0;
            transition: opacity var(--transition-normal);
        }

        .mobile-nav-overlay.open {
            opacity: 1;
        }

        .mobile-nav-drawer {
            display: none;
            position: fixed;
            top: 0;
            right: -320px;
            width: 280px;
            height: 100vh;
            background: var(--bg-elevated);
            z-index: 1002;
            padding: 24px;
            transition: right var(--transition-normal);
            border-left: 1px solid var(--border-subtle);
            overflow-y: auto;
        }

        .mobile-nav-drawer.open {
            right: 0;
        }

        .mobile-nav-drawer a {
            display: block;
            padding: 12px 16px;
            border-radius: var(--radius-md);
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            margin-bottom: 4px;
            transition: all var(--transition-fast);
        }

        .mobile-nav-drawer a:hover,
        .mobile-nav-drawer a.active {
            color: var(--accent);
            background: rgba(183, 240, 74, 0.06);
        }

        .mobile-nav-drawer .drawer-close {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-secondary);
            margin-bottom: 16px;
            font-size: 1rem;
            transition: all var(--transition-fast);
        }

        .mobile-nav-drawer .drawer-close:hover {
            background: rgba(255, 255, 255, 0.12);
            color: var(--text-primary);
        }

        /* ========== PAGE HERO ========== */
        .page-hero {
            padding-top: calc(var(--nav-height) + 60px);
            padding-bottom: 60px;
            background: var(--bg-secondary);
            background-image: linear-gradient(180deg, rgba(13, 17, 23, 0.3) 0%, rgba(17, 24, 32, 0.85) 60%, var(--bg-primary) 100%), url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            position: relative;
            min-height: 420px;
            display: flex;
            align-items: center;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: radial-gradient(ellipse at 60% 40%, rgba(183, 240, 74, 0.06) 0%, transparent 60%);
            pointer-events: none;
        }

        .page-hero .container {
            position: relative;
            z-index: 1;
        }

        .hero-label {
            display: inline-block;
            padding: 6px 14px;
            border-radius: 20px;
            background: var(--accent-subtle);
            color: var(--accent);
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            margin-bottom: 16px;
            border: 1px solid rgba(183, 240, 74, 0.2);
        }

        .page-hero h1 {
            font-size: 3rem;
            font-weight: 800;
            letter-spacing: 0.03em;
            color: var(--text-primary);
            margin: 0 0 16px;
            line-height: 1.25;
        }

        .page-hero .hero-subtitle {
            font-size: 1.1rem;
            color: var(--text-secondary);
            max-width: 600px;
            line-height: 1.7;
            margin: 0 0 28px;
        }

        .hero-search-wrap {
            display: flex;
            gap: 10px;
            max-width: 580px;
            position: relative;
        }

        .hero-search-wrap input {
            flex: 1;
            padding: 14px 20px;
            border-radius: var(--radius-lg);
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            font-size: 0.95rem;
            color: var(--text-primary);
            transition: all var(--transition-fast);
        }

        .hero-search-wrap input:focus {
            border-color: var(--accent);
            box-shadow: 0 0 0 4px var(--accent-subtle);
            background: var(--bg-elevated);
        }

        .hero-search-wrap button {
            padding: 14px 24px;
            border-radius: var(--radius-lg);
            background: var(--accent);
            color: #0D1117;
            font-weight: 700;
            font-size: 0.9rem;
            letter-spacing: 0.03em;
            white-space: nowrap;
            transition: all var(--transition-fast);
        }

        .hero-search-wrap button:hover {
            background: var(--accent-hover);
            box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.25);
            transform: translateY(-1px);
        }

        .hero-quick-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 16px;
            max-width: 580px;
        }

        .hero-quick-tags span {
            font-size: 0.78rem;
            color: var(--text-muted);
            padding: 5px 12px;
            border-radius: 20px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border-subtle);
            cursor: pointer;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .hero-quick-tags span:hover {
            color: var(--accent);
            border-color: var(--border-hover);
            background: var(--accent-subtle);
        }

        /* ========== TAG CLOUD SECTION ========== */
        .tag-cloud-section {
            padding: 48px 0;
            background: var(--bg-primary);
            border-bottom: 1px solid var(--border-subtle);
        }

        .tag-cloud-section .section-label {
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.06em;
            color: var(--text-muted);
            text-transform: uppercase;
            margin-bottom: 20px;
        }

        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: flex-start;
        }

        .tag-cloud .tag-item {
            padding: 10px 18px;
            border-radius: 24px;
            font-size: 0.85rem;
            font-weight: 500;
            cursor: pointer;
            transition: all var(--transition-fast);
            border: 1px solid var(--border-subtle);
            background: var(--bg-card);
            color: var(--text-secondary);
            white-space: nowrap;
            letter-spacing: 0.02em;
        }

        .tag-cloud .tag-item:hover {
            border-color: var(--accent);
            color: var(--accent);
            background: var(--accent-subtle);
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        .tag-cloud .tag-item.tag-large {
            font-size: 1.05rem;
            font-weight: 700;
            padding: 12px 22px;
            border-color: rgba(183, 240, 74, 0.3);
            color: var(--accent);
            background: rgba(183, 240, 74, 0.08);
        }

        .tag-cloud .tag-item.tag-medium {
            font-size: 0.9rem;
            font-weight: 600;
        }

        /* ========== HORIZONTAL SCROLL CARDS ========== */
        .scroll-cards-section {
            padding: 64px 0;
            background: var(--bg-primary);
        }

        .scroll-cards-section .section-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 32px;
            flex-wrap: wrap;
            gap: 16px;
        }

        .scroll-cards-section h2 {
            font-size: 1.6rem;
            font-weight: 700;
            letter-spacing: 0.03em;
            color: var(--text-primary);
            margin: 0;
        }

        .scroll-indicator {
            display: flex;
            gap: 8px;
        }

        .scroll-indicator button {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all var(--transition-fast);
            font-size: 0.9rem;
        }

        .scroll-indicator button:hover {
            background: var(--bg-elevated);
            border-color: var(--border-hover);
            color: var(--accent);
        }

        .scroll-cards-track {
            display: flex;
            gap: 20px;
            overflow-x: auto;
            scroll-snap-type: x mandatory;
            -webkit-overflow-scrolling: touch;
            padding-bottom: 12px;
            scrollbar-width: thin;
            scrollbar-color: var(--border-subtle) transparent;
        }

        .scroll-cards-track::-webkit-scrollbar {
            height: 5px;
        }
        .scroll-cards-track::-webkit-scrollbar-track {
            background: transparent;
        }
        .scroll-cards-track::-webkit-scrollbar-thumb {
            background: var(--border-subtle);
            border-radius: 10px;
        }

        .scroll-card {
            flex: 0 0 320px;
            scroll-snap-align: start;
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-card);
            overflow: hidden;
            transition: all var(--transition-normal);
            cursor: pointer;
            min-width: 280px;
        }

        .scroll-card:hover {
            transform: translateY(-4px);
            border-color: var(--border-hover);
            box-shadow: var(--shadow-card-hover);
        }

        .scroll-card .card-img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            background: var(--bg-elevated);
        }

        .scroll-card .card-body {
            padding: 18px 20px;
        }

        .scroll-card .card-tag {
            display: inline-block;
            font-size: 0.7rem;
            font-weight: 600;
            letter-spacing: 0.05em;
            color: var(--accent);
            background: var(--accent-subtle);
            padding: 3px 10px;
            border-radius: 12px;
            margin-bottom: 8px;
        }

        .scroll-card h3 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: 0 0 8px;
            line-height: 1.4;
        }

        .scroll-card p {
            font-size: 0.82rem;
            color: var(--text-muted);
            margin: 0 0 12px;
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .scroll-card .card-meta {
            font-size: 0.75rem;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .scroll-card .card-meta .dot-sep {
            width: 3px;
            height: 3px;
            border-radius: 50%;
            background: var(--text-muted);
        }

        /* ========== CONTENT GRID SECTION ========== */
        .content-grid-section {
            padding: 64px 0;
            background: var(--bg-secondary);
        }

        .content-grid-section h2 {
            font-size: 1.6rem;
            font-weight: 700;
            letter-spacing: 0.03em;
            color: var(--text-primary);
            margin: 0 0 8px;
        }

        .content-grid-section .grid-subtitle {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin: 0 0 32px;
        }

        .content-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }

        .content-grid-item {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-card);
            padding: 24px;
            transition: all var(--transition-normal);
            cursor: pointer;
            display: flex;
            gap: 18px;
            align-items: flex-start;
        }

        .content-grid-item:hover {
            border-color: var(--border-hover);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }

        .content-grid-item .grid-icon {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-md);
            background: var(--accent-subtle);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            color: var(--accent);
            font-size: 1.2rem;
        }

        .content-grid-item .grid-info h3 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: 0 0 6px;
        }

        .content-grid-item .grid-info p {
            font-size: 0.82rem;
            color: var(--text-muted);
            margin: 0;
            line-height: 1.6;
        }

        .content-grid-item .grid-info .grid-link {
            display: inline-block;
            margin-top: 8px;
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--accent);
            transition: all var(--transition-fast);
        }

        .content-grid-item .grid-info .grid-link:hover {
            color: var(--accent-hover);
            text-decoration: underline;
            text-underline-offset: 3px;
        }

        /* ========== DEEP DIVE SECTION ========== */
        .deep-dive-section {
            padding: 64px 0;
            background: var(--bg-primary);
        }

        .deep-dive-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .deep-dive-text h2 {
            font-size: 1.6rem;
            font-weight: 700;
            letter-spacing: 0.03em;
            color: var(--text-primary);
            margin: 0 0 16px;
            line-height: 1.35;
        }

        .deep-dive-text p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.8;
            margin: 0 0 16px;
        }

        .deep-dive-text .highlight-box {
            background: var(--bg-card);
            border-left: 3px solid var(--accent);
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            padding: 16px 20px;
            margin: 16px 0;
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        .deep-dive-visual {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            background: var(--bg-card);
            border: 1px solid var(--border-card);
        }

        .deep-dive-visual img {
            width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-lg);
        }

        .deep-dive-visual .visual-overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            padding: 40px 20px 16px;
            background: linear-gradient(transparent, rgba(13, 17, 23, 0.9));
            font-size: 0.8rem;
            color: var(--text-muted);
            text-align: center;
        }

        /* ========== STATS PANEL ========== */
        .stats-panel-section {
            padding: 56px 0;
            background: var(--bg-elevated);
            border-top: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
        }

        .stats-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
        }

        .stat-item .stat-value {
            font-family: var(--font-mono);
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--accent);
            letter-spacing: 0.02em;
            line-height: 1.2;
        }

        .stat-item .stat-label {
            font-size: 0.82rem;
            color: var(--text-muted);
            margin-top: 6px;
            letter-spacing: 0.03em;
        }

        .stat-item .stat-sublabel {
            font-size: 0.72rem;
            color: var(--text-muted);
            opacity: 0.7;
            margin-top: 2px;
        }

        /* ========== TOOLS SECTION ========== */
        .tools-section {
            padding: 64px 0;
            background: var(--bg-primary);
        }

        .tools-section h2 {
            font-size: 1.6rem;
            font-weight: 700;
            letter-spacing: 0.03em;
            color: var(--text-primary);
            margin: 0 0 8px;
        }

        .tools-section .tools-subtitle {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin: 0 0 32px;
        }

        .tools-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .tool-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-card);
            padding: 24px;
            text-align: center;
            transition: all var(--transition-normal);
            cursor: pointer;
        }

        .tool-card:hover {
            border-color: var(--border-hover);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
        }

        .tool-card .tool-icon {
            width: 56px;
            height: 56px;
            border-radius: var(--radius-md);
            background: var(--accent-subtle);
            margin: 0 auto 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent);
            font-size: 1.4rem;
        }

        .tool-card h3 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: 0 0 6px;
        }

        .tool-card p {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin: 0 0 14px;
            line-height: 1.5;
        }

        .tool-card .btn-download {
            display: inline-block;
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--accent);
            color: var(--accent);
            font-weight: 600;
            font-size: 0.8rem;
            transition: all var(--transition-fast);
            letter-spacing: 0.03em;
        }

        .tool-card .btn-download:hover {
            background: var(--accent);
            color: #0D1117;
        }

        /* ========== FAQ ========== */
        .faq-section {
            padding: 64px 0;
            background: var(--bg-secondary);
        }

        .faq-section h2 {
            font-size: 1.6rem;
            font-weight: 700;
            letter-spacing: 0.03em;
            color: var(--text-primary);
            margin: 0 0 32px;
            text-align: center;
        }

        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            border-bottom: 1px solid var(--border-subtle);
            padding: 0;
        }

        .faq-question {
            width: 100%;
            padding: 18px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-primary);
            background: transparent;
            text-align: left;
            letter-spacing: 0.02em;
            transition: color var(--transition-fast);
        }

        .faq-question:hover {
            color: var(--accent);
        }

        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.04);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.75rem;
            transition: all var(--transition-normal);
            color: var(--text-muted);
            margin-left: 12px;
        }

        .faq-item.open .faq-question .faq-icon {
            transform: rotate(45deg);
            background: var(--accent-subtle);
            color: var(--accent);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-slow);
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.75;
            padding: 0;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 0 18px;
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            padding: 64px 0;
            background: var(--bg-primary);
            text-align: center;
        }

        .cta-card {
            background: var(--bg-elevated);
            border-radius: var(--radius-xl);
            border: 1px solid var(--border-subtle);
            padding: 48px 32px;
            max-width: 700px;
            margin: 0 auto;
            position: relative;
            overflow: hidden;
        }

        .cta-card::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(183, 240, 74, 0.12) 0%, transparent 70%);
            pointer-events: none;
        }

        .cta-card h2 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: 0 0 12px;
            position: relative;
            z-index: 1;
        }

        .cta-card p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            margin: 0 0 24px;
            position: relative;
            z-index: 1;
            line-height: 1.7;
        }

        .cta-card .btn-primary-lg {
            display: inline-block;
            padding: 14px 32px;
            border-radius: var(--radius-md);
            background: var(--accent);
            color: #0D1117;
            font-weight: 700;
            font-size: 0.95rem;
            letter-spacing: 0.03em;
            transition: all var(--transition-fast);
            position: relative;
            z-index: 1;
        }

        .cta-card .btn-primary-lg:hover {
            background: var(--accent-hover);
            box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.25);
            transform: translateY(-2px);
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-subtle);
            padding: 48px 0 24px;
            color: var(--text-secondary);
            font-size: 0.85rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }

        .footer-col h4 {
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: 0 0 14px;
            letter-spacing: 0.03em;
        }

        .footer-col a {
            display: block;
            padding: 4px 0;
            color: var(--text-muted);
            font-size: 0.82rem;
            transition: color var(--transition-fast);
        }

        .footer-col a:hover {
            color: var(--accent);
        }

        .footer-bottom {
            border-top: 1px solid var(--border-subtle);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: space-between;
            align-items: center;
            font-size: 0.78rem;
            color: var(--text-muted);
        }

        .footer-bottom a {
            color: var(--text-muted);
            transition: color var(--transition-fast);
        }

        .footer-bottom a:hover {
            color: var(--accent);
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .nav-center a {
                padding: 6px 10px;
                font-size: 0.8rem;
            }
            .page-hero h1 {
                font-size: 2.2rem;
            }
            .content-grid {
                grid-template-columns: 1fr 1fr;
            }
            .deep-dive-row {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .stats-row {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .tools-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .scroll-card {
                flex: 0 0 280px;
            }
        }

        @media (max-width: 768px) {
            .nav-center {
                display: none;
            }
            .nav-cta-btn {
                display: none;
            }
            .nav-hamburger {
                display: flex;
            }
            .mobile-nav-overlay {
                display: block;
            }
            .mobile-nav-drawer {
                display: block;
            }
            .page-hero {
                padding-top: calc(var(--nav-height) + 40px);
                padding-bottom: 40px;
                min-height: 340px;
            }
            .page-hero h1 {
                font-size: 1.8rem;
            }
            .page-hero .hero-subtitle {
                font-size: 0.9rem;
            }
            .hero-search-wrap {
                flex-direction: column;
                gap: 8px;
            }
            .hero-search-wrap button {
                width: 100%;
                text-align: center;
            }
            .content-grid {
                grid-template-columns: 1fr;
            }
            .content-grid-item {
                flex-direction: column;
                align-items: flex-start;
            }
            .stats-row {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .stat-item .stat-value {
                font-size: 1.8rem;
            }
            .tools-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
                text-align: left;
            }
            .scroll-cards-track {
                gap: 14px;
            }
            .scroll-card {
                flex: 0 0 260px;
            }
            .scroll-card .card-img {
                height: 150px;
            }
            .tag-cloud .tag-item {
                padding: 8px 14px;
                font-size: 0.78rem;
            }
            .scroll-indicator {
                display: none;
            }
        }

        @media (max-width: 520px) {
            .page-hero h1 {
                font-size: 1.5rem;
            }
            .hero-quick-tags span {
                font-size: 0.7rem;
                padding: 4px 10px;
            }
            .stats-row {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-item .stat-value {
                font-size: 1.5rem;
            }
            .scroll-card {
                flex: 0 0 240px;
            }
            .deep-dive-text h2 {
                font-size: 1.3rem;
            }
            .cta-card {
                padding: 32px 20px;
            }
            .cta-card h2 {
                font-size: 1.2rem;
            }
        }

/* roulang page: category4 */
:root {
            --bg-primary: #0D1117;
            --bg-secondary: #111820;
            --bg-card: #161C24;
            --bg-elevated: #1A212B;
            --accent: #B7F04A;
            --accent-hover: #C6FF5A;
            --accent-subtle: rgba(183, 240, 74, 0.10);
            --accent-subtle-strong: rgba(183, 240, 74, 0.18);
            --text-primary: #F5F7FA;
            --text-secondary: #C8CDD5;
            --text-muted: #8A94A6;
            --border-subtle: rgba(255, 255, 255, 0.08);
            --border-card: rgba(255, 255, 255, 0.06);
            --border-hover: rgba(183, 240, 74, 0.35);
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 14px;
            --radius-xl: 20px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.15);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.25);
            --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.35);
            --shadow-card-hover: 0 8px 28px rgba(0, 0, 0, 0.30);
            --transition-fast: 150ms ease-out;
            --transition-normal: 220ms ease-out;
            --transition-slow: 300ms ease-out;
            --font-stack: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
            --font-mono: 'SF Mono', 'JetBrains Mono', 'Fira Code', 'Consolas', 'Monaco', monospace;
            --container-max: 1280px;
            --section-gap-desktop: 96px;
            --section-gap-mobile: 56px;
            --nav-height: 60px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            font-size: 16px;
        }

        body {
            font-family: var(--font-stack);
            background: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.75;
            min-height: 100vh;
            overflow-x: hidden;
            letter-spacing: 0.01em;
            padding-top: var(--nav-height);
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        a:hover {
            color: var(--accent);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button {
            cursor: pointer;
            border: none;
            font-family: inherit;
            font-size: inherit;
            transition: all var(--transition-fast);
            outline: none;
            background: none;
        }

        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        textarea:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
            border-radius: var(--radius-sm);
        }

        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            color: var(--text-primary);
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 12px 16px;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
            width: 100%;
        }

        input:focus,
        textarea:focus,
        select:focus {
            border-color: var(--accent);
            box-shadow: 0 0 0 3px var(--accent-subtle);
            outline: none;
        }

        input::placeholder,
        textarea::placeholder {
            color: var(--text-muted);
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ========== NAVIGATION ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-height);
            background: rgba(13, 17, 23, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-subtle);
            display: flex;
            align-items: center;
            transition: background var(--transition-normal);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }

        .nav-logo {
            font-weight: 800;
            font-size: 1.25rem;
            letter-spacing: 0.03em;
            color: var(--text-primary);
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
            flex-shrink: 0;
        }

        .nav-logo .logo-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--accent);
            display: inline-block;
            animation: logoPulse 2s ease-in-out infinite;
        }

        @keyframes logoPulse {
            0%,
            100% {
                opacity: 1;
                box-shadow: 0 0 6px var(--accent);
            }
            50% {
                opacity: 0.5;
                box-shadow: 0 0 14px var(--accent);
            }
        }

        .nav-center {
            display: flex;
            align-items: center;
            gap: 4px;
            flex: 1;
            justify-content: center;
        }

        .nav-center a {
            padding: 8px 14px;
            border-radius: var(--radius-sm);
            font-size: 0.88rem;
            font-weight: 500;
            color: var(--text-secondary);
            white-space: nowrap;
            transition: all var(--transition-fast);
            letter-spacing: 0.02em;
            position: relative;
        }

        .nav-center a:hover,
        .nav-center a.active {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.04);
        }

        .nav-center a.active {
            color: var(--accent);
            font-weight: 600;
        }

        .nav-right {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .nav-status-dot {
            width: 9px;
            height: 9px;
            border-radius: 50%;
            background: var(--accent);
            display: inline-block;
            animation: statusBreath 1.8s ease-in-out infinite;
            cursor: default;
        }

        @keyframes statusBreath {
            0%,
            100% {
                box-shadow: 0 0 4px var(--accent);
            }
            50% {
                box-shadow: 0 0 14px var(--accent), 0 0 24px rgba(183, 240, 74, 0.4);
            }
        }

        .nav-notify-btn {
            position: relative;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.04);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-secondary);
            font-size: 1rem;
            transition: all var(--transition-fast);
        }

        .nav-notify-btn:hover {
            background: rgba(255, 255, 255, 0.08);
            color: var(--text-primary);
        }

        .badge-dot {
            position: absolute;
            top: 6px;
            right: 6px;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: #FF4D4F;
            border: 2px solid var(--bg-primary);
        }

        .nav-cta-btn {
            padding: 9px 18px;
            border-radius: var(--radius-md);
            background: var(--accent);
            color: #0D1117;
            font-weight: 700;
            font-size: 0.85rem;
            letter-spacing: 0.02em;
            white-space: nowrap;
            transition: all var(--transition-fast);
            border: 1px solid transparent;
        }

        .nav-cta-btn:hover {
            background: var(--accent-hover);
            color: #0D1117;
            border-color: rgba(255, 255, 255, 0.25);
            transform: translateY(-1px);
            box-shadow: 0 4px 14px rgba(183, 240, 74, 0.25);
        }

        .nav-hamburger {
            display: none;
            width: 38px;
            height: 38px;
            border-radius: var(--radius-sm);
            background: rgba(255, 255, 255, 0.04);
            color: var(--text-secondary);
            font-size: 1.2rem;
            align-items: center;
            justify-content: center;
        }

        .nav-hamburger:hover {
            background: rgba(255, 255, 255, 0.08);
            color: var(--text-primary);
        }

        /* Mobile nav drawer */
        .mobile-nav-overlay {
            display: none;
            position: fixed;
            top: var(--nav-height);
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(0, 0, 0, 0.7);
            z-index: 999;
        }

        .mobile-nav-drawer {
            display: none;
            position: fixed;
            top: var(--nav-height);
            right: 0;
            width: 280px;
            bottom: 0;
            background: var(--bg-secondary);
            z-index: 1001;
            padding: 20px;
            flex-direction: column;
            gap: 6px;
            border-left: 1px solid var(--border-subtle);
            overflow-y: auto;
        }

        .mobile-nav-drawer a {
            display: block;
            padding: 12px 16px;
            border-radius: var(--radius-md);
            color: var(--text-secondary);
            font-weight: 500;
            font-size: 0.95rem;
            transition: all var(--transition-fast);
        }

        .mobile-nav-drawer a:hover,
        .mobile-nav-drawer a.active {
            background: rgba(255, 255, 255, 0.04);
            color: var(--text-primary);
        }
        .mobile-nav-drawer a.active {
            color: var(--accent);
            font-weight: 600;
        }

        .mobile-nav-drawer .nav-cta-btn-mobile {
            margin-top: 12px;
            text-align: center;
            padding: 12px;
            background: var(--accent);
            color: #0D1117;
            border-radius: var(--radius-md);
            font-weight: 700;
        }

        /* ========== HERO ========== */
        .hero-section {
            position: relative;
            min-height: 420px;
            display: flex;
            align-items: center;
            background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            overflow: hidden;
        }

        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(13, 17, 23, 0.75) 0%, rgba(13, 17, 23, 0.9) 60%, var(--bg-primary) 100%);
            z-index: 1;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            padding: 80px 0 60px;
            max-width: 700px;
        }

        .hero-tag {
            display: inline-block;
            padding: 5px 14px;
            border-radius: 20px;
            background: var(--accent-subtle-strong);
            color: var(--accent);
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            margin-bottom: 16px;
            border: 1px solid rgba(183, 240, 74, 0.2);
        }

        .hero-content h1 {
            font-size: 3rem;
            font-weight: 800;
            line-height: 1.2;
            color: var(--text-primary);
            margin-bottom: 16px;
            letter-spacing: 0.02em;
        }

        .hero-content h1 span {
            color: var(--accent);
        }

        .hero-content .hero-subtitle {
            font-size: 1.1rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 28px;
            max-width: 560px;
        }

        .hero-meta-row {
            display: flex;
            align-items: center;
            gap: 20px;
            flex-wrap: wrap;
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        .hero-meta-row span {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .hero-meta-row i {
            color: var(--accent);
            font-size: 0.75rem;
        }

        /* ========== BREADCRUMB ========== */
        .breadcrumb-section {
            padding: 20px 0;
            border-bottom: 1px solid var(--border-subtle);
            background: var(--bg-secondary);
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.82rem;
            color: var(--text-muted);
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: var(--text-muted);
            transition: color var(--transition-fast);
        }

        .breadcrumb a:hover {
            color: var(--accent);
        }

        .breadcrumb .separator {
            color: var(--text-muted);
            opacity: 0.5;
        }

        .breadcrumb .current {
            color: var(--accent);
            font-weight: 600;
        }

        /* ========== MAIN CONTENT DUAL LAYOUT ========== */
        .main-content-section {
            padding: 48px 0 80px;
        }

        .dual-layout {
            display: grid;
            grid-template-columns: 1fr 340px;
            gap: 40px;
            align-items: start;
        }

        /* ========== LEFT: ARTICLE STREAM ========== */
        .article-stream {
            display: flex;
            flex-direction: column;
            gap: 28px;
        }

        .article-card-deep {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-card);
            overflow: hidden;
            transition: all var(--transition-normal);
            display: grid;
            grid-template-columns: 260px 1fr;
            gap: 0;
        }

        .article-card-deep:hover {
            border-color: var(--border-hover);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }

        .article-card-deep .article-cover {
            position: relative;
            overflow: hidden;
            min-height: 200px;
            background: var(--bg-elevated);
        }

        .article-card-deep .article-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }

        .article-card-deep:hover .article-cover img {
            transform: scale(1.04);
        }

        .article-card-deep .article-body {
            padding: 24px 28px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            gap: 10px;
        }

        .article-card-deep .article-tags {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
        }

        .article-card-deep .article-tag {
            display: inline-block;
            padding: 3px 10px;
            border-radius: 14px;
            background: var(--accent-subtle);
            color: var(--accent);
            font-size: 0.72rem;
            font-weight: 600;
            letter-spacing: 0.03em;
            border: 1px solid rgba(183, 240, 74, 0.15);
        }

        .article-card-deep .article-tag-alt {
            background: rgba(138, 148, 166, 0.12);
            color: var(--text-muted);
            border: 1px solid rgba(255, 255, 255, 0.05);
        }

        .article-card-deep .article-title {
            font-size: 1.2rem;
            font-weight: 700;
            line-height: 1.4;
            color: var(--text-primary);
            transition: color var(--transition-fast);
        }

        .article-card-deep:hover .article-title {
            color: var(--accent);
        }

        .article-card-deep .article-summary {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .article-card-deep .article-footer-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            flex-wrap: wrap;
        }

        .article-card-deep .article-date {
            font-size: 0.78rem;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 5px;
        }

        .article-card-deep .read-more-btn {
            padding: 7px 16px;
            border-radius: var(--radius-sm);
            background: transparent;
            border: 1px solid var(--border-subtle);
            color: var(--accent);
            font-weight: 600;
            font-size: 0.82rem;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .article-card-deep .read-more-btn:hover {
            background: var(--accent);
            color: #0D1117;
            border-color: var(--accent);
        }

        /* ========== RIGHT: SIDEBAR ========== */
        .sidebar {
            position: sticky;
            top: calc(var(--nav-height) + 24px);
            display: flex;
            flex-direction: column;
            gap: 24px;
        }

        .sidebar-block {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-card);
            padding: 20px 22px;
        }

        .sidebar-block h3 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
            letter-spacing: 0.02em;
        }

        .sidebar-block h3 i {
            color: var(--accent);
            font-size: 0.85rem;
        }

        .sidebar-recommend-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .sidebar-recommend-item {
            display: flex;
            gap: 12px;
            padding: 10px 12px;
            border-radius: var(--radius-md);
            transition: all var(--transition-fast);
            cursor: pointer;
            border: 1px solid transparent;
        }

        .sidebar-recommend-item:hover {
            background: rgba(255, 255, 255, 0.03);
            border-color: var(--border-subtle);
        }

        .sidebar-recommend-item .rec-thumb {
            width: 56px;
            height: 56px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            flex-shrink: 0;
            background: var(--bg-elevated);
        }

        .sidebar-recommend-item .rec-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .sidebar-recommend-item .rec-info {
            flex: 1;
            min-width: 0;
        }

        .sidebar-recommend-item .rec-info .rec-title {
            font-size: 0.82rem;
            font-weight: 600;
            color: var(--text-secondary);
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: color var(--transition-fast);
        }

        .sidebar-recommend-item:hover .rec-info .rec-title {
            color: var(--accent);
        }

        .sidebar-recommend-item .rec-info .rec-date {
            font-size: 0.7rem;
            color: var(--text-muted);
            margin-top: 4px;
        }

        /* Hot list */
        .hot-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .hot-list li {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 9px 12px;
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
            cursor: pointer;
            font-size: 0.84rem;
            color: var(--text-secondary);
            border: 1px solid transparent;
        }

        .hot-list li:hover {
            background: rgba(255, 255, 255, 0.03);
            border-color: var(--border-subtle);
            color: var(--text-primary);
        }

        .hot-list .hot-rank {
            width: 26px;
            height: 26px;
            border-radius: 6px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 0.78rem;
            flex-shrink: 0;
            background: rgba(255, 255, 255, 0.05);
            color: var(--text-muted);
        }

        .hot-list li:nth-child(1) .hot-rank,
        .hot-list li:nth-child(2) .hot-rank,
        .hot-list li:nth-child(3) .hot-rank {
            background: var(--accent-subtle-strong);
            color: var(--accent);
        }

        .hot-list .hot-title {
            flex: 1;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        /* ========== FULL-WIDTH SECTIONS ========== */
        .section-block {
            padding: 60px 0;
        }

        .section-block-alt {
            padding: 60px 0;
            background: var(--bg-secondary);
        }

        .section-heading {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 32px;
        }

        .section-heading .heading-bar {
            width: 4px;
            height: 28px;
            border-radius: 2px;
            background: var(--accent);
        }

        .section-heading h2 {
            font-size: 1.75rem;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: 0.02em;
        }

        /* Tech deep dive */
        .tech-deep-dive {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .tech-deep-dive .deep-text h3 {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 12px;
        }

        .tech-deep-dive .deep-text p {
            font-size: 0.92rem;
            color: var(--text-muted);
            line-height: 1.85;
            margin-bottom: 10px;
        }

        .tech-deep-dive .deep-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-card);
        }

        .tech-deep-dive .deep-image img {
            width: 100%;
            height: auto;
            object-fit: cover;
        }

        /* Comparison table */
        .comparison-table-wrap {
            overflow-x: auto;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-card);
        }

        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            min-width: 700px;
        }

        .comparison-table thead th {
            background: var(--bg-elevated);
            padding: 14px 18px;
            text-align: left;
            font-weight: 700;
            font-size: 0.85rem;
            color: var(--text-primary);
            border-bottom: 2px solid var(--border-subtle);
            letter-spacing: 0.02em;
        }

        .comparison-table tbody td {
            padding: 13px 18px;
            font-size: 0.84rem;
            color: var(--text-secondary);
            border-bottom: 1px solid var(--border-card);
            line-height: 1.5;
        }

        .comparison-table tbody tr:hover td {
            background: rgba(255, 255, 255, 0.015);
        }

        .comparison-table .highlight-cell {
            color: var(--accent);
            font-weight: 600;
        }

        /* Performance cards */
        .perf-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .perf-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-card);
            padding: 24px 20px;
            text-align: center;
            transition: all var(--transition-normal);
        }

        .perf-card:hover {
            border-color: var(--border-hover);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }

        .perf-card .perf-value {
            font-family: var(--font-mono);
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--accent);
            letter-spacing: 0.02em;
            margin-bottom: 6px;
        }

        .perf-card .perf-label {
            font-size: 0.82rem;
            color: var(--text-muted);
            font-weight: 500;
        }

        /* Tech stack tags */
        .tech-tags-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
        }

        .tech-tag-pill {
            padding: 10px 20px;
            border-radius: 24px;
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            color: var(--text-secondary);
            font-weight: 600;
            font-size: 0.85rem;
            transition: all var(--transition-fast);
            cursor: default;
            letter-spacing: 0.02em;
        }

        .tech-tag-pill:hover {
            border-color: var(--accent);
            color: var(--accent);
            background: var(--accent-subtle);
            box-shadow: 0 0 16px rgba(183, 240, 74, 0.1);
        }

        .tech-tag-pill.featured {
            background: var(--accent-subtle-strong);
            border-color: var(--accent);
            color: var(--accent);
        }

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-card);
            overflow: hidden;
            transition: all var(--transition-normal);
        }

        .faq-item:hover {
            border-color: var(--border-subtle);
        }

        .faq-question {
            width: 100%;
            padding: 18px 22px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--text-primary);
            background: transparent;
            text-align: left;
            cursor: pointer;
            transition: all var(--transition-fast);
        }

        .faq-question:hover {
            color: var(--accent);
        }

        .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.04);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            transition: transform var(--transition-normal);
            font-size: 0.7rem;
            color: var(--text-muted);
        }

        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            background: var(--accent-subtle-strong);
            color: var(--accent);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-slow);
            padding: 0 22px;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 22px 20px;
        }

        .faq-answer p {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.75;
        }

        /* CTA */
        .cta-section {
            padding: 60px 0;
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
        }

        .cta-inner {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .cta-text h2 {
            font-size: 1.75rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 10px;
            letter-spacing: 0.02em;
        }

        .cta-text p {
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 20px;
        }

        .cta-btn-large {
            display: inline-block;
            padding: 14px 32px;
            border-radius: var(--radius-md);
            background: var(--accent);
            color: #0D1117;
            font-weight: 700;
            font-size: 0.95rem;
            letter-spacing: 0.03em;
            border: 1px solid transparent;
            transition: all var(--transition-fast);
        }

        .cta-btn-large:hover {
            background: var(--accent-hover);
            border-color: rgba(255, 255, 255, 0.25);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(183, 240, 74, 0.3);
            color: #0D1117;
        }

        .cta-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-card);
        }

        .cta-image img {
            width: 100%;
            height: auto;
            object-fit: cover;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-subtle);
            padding: 48px 0 28px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            margin-bottom: 32px;
        }

        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 14px;
            letter-spacing: 0.02em;
        }

        .footer-col a {
            display: block;
            font-size: 0.82rem;
            color: var(--text-muted);
            padding: 5px 0;
            transition: color var(--transition-fast);
        }

        .footer-col a:hover {
            color: var(--accent);
        }

        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            align-items: center;
            justify-content: space-between;
            padding-top: 20px;
            border-top: 1px solid var(--border-subtle);
            font-size: 0.78rem;
            color: var(--text-muted);
        }

        .footer-bottom a {
            color: var(--text-muted);
        }

        .footer-bottom a:hover {
            color: var(--accent);
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .dual-layout {
                grid-template-columns: 1fr;
            }
            .sidebar {
                position: static;
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .article-card-deep {
                grid-template-columns: 200px 1fr;
            }
            .article-card-deep .article-cover {
                min-height: 160px;
            }
            .tech-deep-dive {
                grid-template-columns: 1fr;
            }
            .perf-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .cta-inner {
                grid-template-columns: 1fr;
            }
            .nav-center {
                gap: 2px;
            }
            .nav-center a {
                padding: 8px 10px;
                font-size: 0.8rem;
            }
            .hero-content h1 {
                font-size: 2.2rem;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .nav-center {
                display: none;
            }
            .nav-cta-btn {
                display: none;
            }
            .nav-hamburger {
                display: flex;
            }
            .mobile-nav-overlay.active {
                display: block;
            }
            .mobile-nav-drawer.active {
                display: flex;
            }
            .article-card-deep {
                grid-template-columns: 1fr;
            }
            .article-card-deep .article-cover {
                min-height: 200px;
                max-height: 240px;
            }
            .article-card-deep .article-body {
                padding: 18px 20px;
            }
            .sidebar {
                grid-template-columns: 1fr;
            }
            .hero-content h1 {
                font-size: 1.7rem;
            }
            .hero-content .hero-subtitle {
                font-size: 0.9rem;
            }
            .perf-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .perf-card .perf-value {
                font-size: 1.8rem;
            }
            .section-heading h2 {
                font-size: 1.35rem;
            }
            .tech-deep-dive .deep-text h3 {
                font-size: 1.15rem;
            }
            .cta-text h2 {
                font-size: 1.35rem;
            }
            .section-block,
            .section-block-alt {
                padding: 40px 0;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
            .comparison-table-wrap {
                border-radius: var(--radius-md);
            }
            .comparison-table thead th,
            .comparison-table tbody td {
                padding: 10px 12px;
                font-size: 0.76rem;
            }
        }

        @media (max-width: 520px) {
            .hero-content h1 {
                font-size: 1.4rem;
            }
            .hero-content .hero-subtitle {
                font-size: 0.82rem;
            }
            .hero-section {
                min-height: 300px;
            }
            .hero-content {
                padding: 50px 0 40px;
            }
            .perf-grid {
                grid-template-columns: 1fr;
            }
            .article-card-deep .article-title {
                font-size: 1rem;
            }
            .article-card-deep .article-summary {
                font-size: 0.8rem;
            }
            .container {
                padding: 0 16px;
            }
            .dual-layout {
                gap: 24px;
            }
            .main-content-section {
                padding: 32px 0 48px;
            }
            .tech-tag-pill {
                padding: 8px 14px;
                font-size: 0.76rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .cta-btn-large {
                padding: 12px 24px;
                font-size: 0.85rem;
            }
            .faq-question {
                font-size: 0.85rem;
                padding: 14px 16px;
            }
        }

/* roulang page: category7 */
:root {
            --bg-primary: #0D1117;
            --bg-secondary: #111820;
            --bg-card: #161C24;
            --bg-elevated: #1A212B;
            --accent: #B7F04A;
            --accent-hover: #C6FF5A;
            --accent-subtle: rgba(183, 240, 74, 0.10);
            --accent-subtle2: rgba(183, 240, 74, 0.18);
            --accent-glow: rgba(183, 240, 74, 0.25);
            --text-primary: #F5F7FA;
            --text-secondary: #C8CDD5;
            --text-muted: #8A94A6;
            --border-subtle: rgba(255, 255, 255, 0.08);
            --border-card: rgba(255, 255, 255, 0.06);
            --border-hover: rgba(183, 240, 74, 0.35);
            --border-accent: rgba(183, 240, 74, 0.45);
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 14px;
            --radius-xl: 20px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.15);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.25);
            --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.35);
            --shadow-card-hover: 0 8px 28px rgba(0, 0, 0, 0.30);
            --transition-fast: 150ms ease-out;
            --transition-normal: 220ms ease-out;
            --transition-slow: 300ms ease-out;
            --font-stack: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
            --font-mono: 'SF Mono', 'JetBrains Mono', 'Fira Code', 'Consolas', 'Monaco', monospace;
            --container-max: 1280px;
            --section-gap-desktop: 96px;
            --section-gap-mobile: 56px;
            --nav-height: 60px;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            font-size: 16px;
        }

        body {
            font-family: var(--font-stack);
            background: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.75;
            min-height: 100vh;
            overflow-x: hidden;
            letter-spacing: 0.01em;
            margin: 0;
            padding: 0;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--accent);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button {
            cursor: pointer;
            border: none;
            font-family: inherit;
            font-size: inherit;
            transition: all var(--transition-fast);
            outline: none;
        }
        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        textarea:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
            border-radius: var(--radius-sm);
        }
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            color: var(--text-primary);
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 12px 16px;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
            width: 100%;
        }
        input:focus,
        textarea:focus,
        select:focus {
            border-color: var(--accent);
            box-shadow: 0 0 0 3px var(--accent-subtle);
            outline: none;
        }
        input::placeholder,
        textarea::placeholder {
            color: var(--text-muted);
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ========== NAVIGATION ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-height);
            background: rgba(13, 17, 23, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-subtle);
            display: flex;
            align-items: center;
            transition: background var(--transition-normal);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }
        .nav-logo {
            font-weight: 800;
            font-size: 1.25rem;
            letter-spacing: 0.03em;
            color: var(--text-primary);
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
            flex-shrink: 0;
        }
        .nav-logo .logo-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--accent);
            display: inline-block;
            animation: logoPulse 2s ease-in-out infinite;
        }
        @keyframes logoPulse {
            0%,
            100% {
                box-shadow: 0 0 0 0 var(--accent-glow);
            }
            50% {
                box-shadow: 0 0 0 8px transparent;
            }
        }
        .nav-center {
            display: flex;
            align-items: center;
            gap: 4px;
            flex: 1;
            justify-content: center;
        }
        .nav-center a {
            padding: 8px 14px;
            border-radius: var(--radius-sm);
            font-size: 0.875rem;
            font-weight: 500;
            color: var(--text-secondary);
            white-space: nowrap;
            transition: all var(--transition-fast);
            letter-spacing: 0.02em;
            position: relative;
        }
        .nav-center a:hover,
        .nav-center a.active {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.04);
        }
        .nav-center a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--accent);
            border-radius: 3px;
        }
        .nav-right {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .nav-status-dot {
            width: 9px;
            height: 9px;
            border-radius: 50%;
            background: var(--accent);
            display: inline-block;
            animation: statusBreath 2.5s ease-in-out infinite;
            cursor: default;
            flex-shrink: 0;
        }
        @keyframes statusBreath {
            0%,
            100% {
                box-shadow: 0 0 0 0 var(--accent-glow);
            }
            50% {
                box-shadow: 0 0 0 10px transparent;
            }
        }
        .nav-notify-btn {
            background: none;
            color: var(--text-secondary);
            font-size: 1.1rem;
            padding: 6px;
            border-radius: var(--radius-sm);
            position: relative;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }
        .nav-notify-btn:hover {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.05);
        }
        .nav-notify-btn .badge-dot {
            position: absolute;
            top: 4px;
            right: 4px;
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: #FF5A5A;
            border: 1.5px solid var(--bg-primary);
        }
        .nav-cta-btn {
            padding: 8px 18px;
            border-radius: var(--radius-md);
            font-size: 0.85rem;
            font-weight: 600;
            background: var(--accent);
            color: #0D1117;
            white-space: nowrap;
            letter-spacing: 0.02em;
            flex-shrink: 0;
            transition: all var(--transition-fast);
        }
        .nav-cta-btn:hover {
            background: var(--accent-hover);
            color: #0D1117;
            box-shadow: 0 0 20px var(--accent-glow);
            transform: translateY(-1px);
        }
        .nav-hamburger {
            display: none;
            background: none;
            color: var(--text-secondary);
            font-size: 1.3rem;
            padding: 6px 8px;
            border-radius: var(--radius-sm);
            flex-shrink: 0;
        }
        .nav-hamburger:hover {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.05);
        }

        /* ========== BREADCRUMB ========== */
        .breadcrumb-bar {
            padding-top: calc(var(--nav-height) + 20px);
            padding-bottom: 8px;
            background: var(--bg-primary);
            border-bottom: 1px solid var(--border-subtle);
        }
        .breadcrumb-bar .container {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        .breadcrumb-bar a {
            color: var(--text-muted);
        }
        .breadcrumb-bar a:hover {
            color: var(--accent);
        }
        .breadcrumb-bar .sep {
            color: var(--text-muted);
            opacity: 0.5;
        }
        .breadcrumb-bar .current {
            color: var(--accent);
            font-weight: 600;
        }

        /* ========== HERO ========== */
        .hero-section {
            position: relative;
            min-height: 520px;
            display: flex;
            align-items: center;
            background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            overflow: hidden;
            margin-top: 0;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(13, 17, 23, 0.75) 0%, rgba(13, 17, 23, 0.88) 40%, rgba(13, 17, 23, 0.95) 100%);
            z-index: 1;
        }
        .hero-section .container {
            position: relative;
            z-index: 2;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 40px;
            flex-wrap: wrap;
            width: 100%;
        }
        .hero-text {
            flex: 1 1 480px;
            max-width: 620px;
        }
        .hero-badge {
            display: inline-block;
            padding: 6px 14px;
            border-radius: 20px;
            background: var(--accent-subtle);
            border: 1px solid var(--border-accent);
            color: var(--accent);
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            margin-bottom: 16px;
        }
        .hero-text h1 {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.2;
            margin: 0 0 16px;
            letter-spacing: 0.02em;
            color: var(--text-primary);
        }
        .hero-text h1 .accent-word {
            color: var(--accent);
        }
        .hero-subtitle {
            font-size: 1.1rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin: 0 0 28px;
            max-width: 520px;
        }
        .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 26px;
            border-radius: var(--radius-md);
            font-weight: 700;
            font-size: 0.95rem;
            letter-spacing: 0.03em;
            background: var(--accent);
            color: #0D1117;
            transition: all var(--transition-normal);
            white-space: nowrap;
        }
        .btn-primary:hover {
            background: var(--accent-hover);
            color: #0D1117;
            box-shadow: 0 0 24px var(--accent-glow);
            transform: translateY(-2px);
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 26px;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 0.95rem;
            letter-spacing: 0.03em;
            background: transparent;
            color: var(--text-primary);
            border: 1px solid var(--border-subtle);
            transition: all var(--transition-normal);
            white-space: nowrap;
        }
        .btn-secondary:hover {
            background: var(--accent);
            color: #0D1117;
            border-color: var(--accent);
            transform: translateY(-2px);
        }
        .hero-stat-card {
            flex: 0 0 280px;
            background: rgba(22, 28, 36, 0.85);
            backdrop-filter: blur(12px);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            display: flex;
            flex-direction: column;
            gap: 14px;
            box-shadow: var(--shadow-lg);
        }
        .hero-stat-item {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .hero-stat-icon {
            width: 40px;
            height: 40px;
            border-radius: var(--radius-md);
            background: var(--accent-subtle);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: var(--accent);
            flex-shrink: 0;
        }
        .hero-stat-info .stat-val {
            font-size: 1.5rem;
            font-weight: 800;
            font-family: var(--font-mono);
            color: var(--accent);
            line-height: 1;
        }
        .hero-stat-info .stat-label {
            font-size: 0.75rem;
            color: var(--text-muted);
            margin-top: 2px;
        }

        /* ========== SECTION COMMON ========== */
        .section {
            padding: var(--section-gap-desktop) 0;
        }
        .section-header {
            margin-bottom: 48px;
        }
        .section-tag {
            display: inline-block;
            padding: 5px 12px;
            border-radius: 20px;
            background: var(--accent-subtle);
            border: 1px solid var(--border-accent);
            color: var(--accent);
            font-size: 0.78rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            margin-bottom: 12px;
        }
        .section-title {
            font-size: 2rem;
            font-weight: 800;
            letter-spacing: 0.02em;
            margin: 0 0 8px;
            color: var(--text-primary);
            line-height: 1.3;
        }
        .section-desc {
            color: var(--text-muted);
            font-size: 0.95rem;
            max-width: 600px;
            line-height: 1.7;
        }

        /* ========== COMPARISON TABLE ========== */
        .compare-section {
            background: var(--bg-secondary);
        }
        .compare-table-wrap {
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-card);
            background: var(--bg-card);
            box-shadow: var(--shadow-md);
        }
        .compare-table {
            width: 100%;
            min-width: 700px;
            border-collapse: collapse;
            font-size: 0.9rem;
        }
        .compare-table thead th {
            background: var(--bg-elevated);
            padding: 16px 20px;
            text-align: left;
            font-weight: 700;
            font-size: 0.85rem;
            letter-spacing: 0.03em;
            color: var(--text-primary);
            border-bottom: 2px solid var(--border-subtle);
            white-space: nowrap;
        }
        .compare-table thead th.col-our {
            color: var(--accent);
            background: var(--accent-subtle);
        }
        .compare-table tbody td {
            padding: 14px 20px;
            border-bottom: 1px solid var(--border-card);
            color: var(--text-secondary);
            vertical-align: top;
            line-height: 1.6;
        }
        .compare-table tbody tr:hover td {
            background: rgba(255, 255, 255, 0.015);
        }
        .compare-table tbody td.col-our {
            color: var(--text-primary);
            font-weight: 500;
        }
        .compare-table .check-icon {
            color: var(--accent);
            font-weight: 700;
        }
        .compare-table .warn-icon {
            color: #FF8C42;
        }
        .compare-table .cross-icon {
            color: #FF5A5A;
        }
        .table-tag {
            display: inline-block;
            padding: 3px 10px;
            border-radius: 12px;
            font-size: 0.72rem;
            font-weight: 600;
            letter-spacing: 0.03em;
            background: var(--accent-subtle);
            color: var(--accent);
            margin-left: 6px;
            white-space: nowrap;
        }

        /* ========== TECH INSIGHT ========== */
        .tech-insight-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .tech-insight-text h3 {
            font-size: 1.5rem;
            font-weight: 700;
            margin: 0 0 16px;
            color: var(--text-primary);
            letter-spacing: 0.02em;
        }
        .tech-insight-text p {
            color: var(--text-secondary);
            line-height: 1.85;
            margin: 0 0 12px;
            font-size: 0.95rem;
        }
        .tech-insight-text .highlight-box {
            background: var(--bg-elevated);
            border-left: 3px solid var(--accent);
            padding: 16px 20px;
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            margin: 20px 0;
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        .tech-insight-visual {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            border: 1px solid var(--border-card);
        }
        .tech-insight-visual img {
            width: 100%;
            height: auto;
            border-radius: var(--radius-lg);
        }
        .tech-insight-visual .img-label {
            position: absolute;
            bottom: 16px;
            left: 16px;
            background: rgba(13, 17, 23, 0.85);
            padding: 6px 14px;
            border-radius: var(--radius-sm);
            font-size: 0.75rem;
            color: var(--text-secondary);
            letter-spacing: 0.03em;
            backdrop-filter: blur(6px);
        }

        /* ========== METRICS STRIP ========== */
        .metrics-strip {
            background: var(--bg-elevated);
            border-top: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
        }
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            text-align: center;
        }
        .metric-item .metric-val {
            font-size: 2.8rem;
            font-weight: 800;
            font-family: var(--font-mono);
            color: var(--accent);
            line-height: 1;
            letter-spacing: -0.01em;
        }
        .metric-item .metric-unit {
            font-size: 1rem;
            font-weight: 600;
            color: var(--accent);
            margin-left: 2px;
        }
        .metric-item .metric-label {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-top: 6px;
            letter-spacing: 0.02em;
        }

        /* ========== DEEP CONTENT ========== */
        .deep-content-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: start;
        }
        .deep-content-block.reverse {
            direction: rtl;
        }
        .deep-content-block.reverse>* {
            direction: ltr;
        }
        .deep-content-card {
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-lg);
            padding: 28px;
            transition: all var(--transition-normal);
        }
        .deep-content-card:hover {
            border-color: var(--border-hover);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }
        .deep-content-card h4 {
            font-size: 1.15rem;
            font-weight: 700;
            margin: 0 0 12px;
            color: var(--text-primary);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .deep-content-card h4 .card-icon {
            width: 36px;
            height: 36px;
            border-radius: var(--radius-md);
            background: var(--accent-subtle);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent);
            font-size: 0.9rem;
            flex-shrink: 0;
        }
        .deep-content-card p {
            color: var(--text-secondary);
            font-size: 0.9rem;
            line-height: 1.75;
            margin: 0;
        }
        .deep-content-visual {
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-card);
            box-shadow: var(--shadow-md);
        }
        .deep-content-visual img {
            width: 100%;
            height: auto;
            border-radius: var(--radius-lg);
        }

        /* ========== DOWNLOADS ========== */
        .downloads-section {
            background: var(--bg-secondary);
        }
        .downloads-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .download-card {
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-lg);
            padding: 28px;
            display: flex;
            flex-direction: column;
            gap: 14px;
            transition: all var(--transition-normal);
            position: relative;
            overflow: hidden;
        }
        .download-card:hover {
            border-color: var(--border-hover);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
        }
        .download-card .dl-icon {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-md);
            background: var(--accent-subtle);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            color: var(--accent);
            flex-shrink: 0;
        }
        .download-card h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin: 0;
            color: var(--text-primary);
            letter-spacing: 0.02em;
        }
        .download-card .dl-meta {
            font-size: 0.78rem;
            color: var(--text-muted);
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }
        .download-card p {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.6;
            margin: 0;
            flex: 1;
        }
        .download-card .dl-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 20px;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 0.85rem;
            letter-spacing: 0.03em;
            background: var(--accent);
            color: #0D1117;
            align-self: flex-start;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .download-card .dl-btn:hover {
            background: var(--accent-hover);
            color: #0D1117;
            box-shadow: 0 0 20px var(--accent-glow);
            transform: translateY(-1px);
        }
        .download-card .dl-cover {
            width: 100%;
            height: 140px;
            object-fit: cover;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-card);
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            border-bottom: 1px solid var(--border-card);
            overflow: hidden;
        }
        .faq-question {
            width: 100%;
            background: none;
            padding: 18px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-primary);
            letter-spacing: 0.02em;
            text-align: left;
            transition: color var(--transition-fast);
        }
        .faq-question:hover {
            color: var(--accent);
        }
        .faq-question .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--bg-elevated);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.7rem;
            color: var(--text-muted);
            flex-shrink: 0;
            transition: all var(--transition-normal);
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            background: var(--accent-subtle);
            color: var(--accent);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-slow);
            color: var(--text-secondary);
            font-size: 0.9rem;
            line-height: 1.75;
            padding: 0;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 0 18px;
        }

        /* ========== CTA ========== */
        .cta-section {
            background: var(--bg-elevated);
            border-top: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
        }
        .cta-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            flex-wrap: wrap;
        }
        .cta-text h3 {
            font-size: 1.6rem;
            font-weight: 800;
            margin: 0 0 8px;
            letter-spacing: 0.02em;
        }
        .cta-text p {
            color: var(--text-muted);
            font-size: 0.95rem;
            margin: 0;
            max-width: 480px;
        }
        .cta-actions {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-subtle);
            padding: 48px 0 28px;
            color: var(--text-muted);
            font-size: 0.88rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 32px;
        }
        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: 0 0 14px;
            letter-spacing: 0.03em;
        }
        .footer-col a {
            display: block;
            padding: 5px 0;
            color: var(--text-muted);
            font-size: 0.85rem;
            transition: color var(--transition-fast);
        }
        .footer-col a:hover {
            color: var(--accent);
        }
        .footer-bottom {
            border-top: 1px solid var(--border-subtle);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: space-between;
            align-items: center;
            font-size: 0.78rem;
            color: var(--text-muted);
        }
        .footer-bottom a {
            color: var(--text-muted);
        }
        .footer-bottom a:hover {
            color: var(--accent);
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .hero-text h1 {
                font-size: 2.2rem;
            }
            .hero-section {
                min-height: 420px;
            }
            .hero-section .container {
                flex-direction: column;
                align-items: flex-start;
            }
            .hero-stat-card {
                flex: 0 0 auto;
                width: 100%;
                max-width: 400px;
                flex-direction: row;
                flex-wrap: wrap;
                gap: 10px;
            }
            .hero-stat-item {
                flex: 1 1 40%;
            }
            .tech-insight-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .deep-content-block {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .downloads-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .nav-center {
                gap: 2px;
            }
            .nav-center a {
                padding: 8px 10px;
                font-size: 0.8rem;
            }
            .section {
                padding: 64px 0;
            }
            .section-title {
                font-size: 1.6rem;
            }
        }
        @media (max-width: 768px) {
            .nav-center {
                display: none;
                position: fixed;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: rgba(13, 17, 23, 0.97);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 12px 16px;
                gap: 2px;
                border-bottom: 1px solid var(--border-subtle);
                z-index: 999;
            }
            .nav-center.open {
                display: flex;
            }
            .nav-center a {
                width: 100%;
                padding: 12px 16px;
                border-radius: var(--radius-sm);
                font-size: 0.9rem;
            }
            .nav-hamburger {
                display: flex;
                align-items: center;
                justify-content: center;
            }
            .nav-cta-btn {
                padding: 7px 14px;
                font-size: 0.8rem;
            }
            .hero-text h1 {
                font-size: 1.7rem;
            }
            .hero-subtitle {
                font-size: 0.95rem;
            }
            .hero-section {
                min-height: 380px;
            }
            .hero-stat-card {
                max-width: 100%;
            }
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .metric-item .metric-val {
                font-size: 2rem;
            }
            .downloads-grid {
                grid-template-columns: 1fr;
            }
            .compare-table {
                min-width: 560px;
                font-size: 0.78rem;
            }
            .compare-table thead th,
            .compare-table tbody td {
                padding: 10px 12px;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .cta-inner {
                flex-direction: column;
                align-items: flex-start;
                gap: 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
            .section {
                padding: 48px 0;
            }
            .breadcrumb-bar {
                padding-top: calc(var(--nav-height) + 12px);
            }
        }
        @media (max-width: 520px) {
            .hero-text h1 {
                font-size: 1.4rem;
            }
            .hero-section {
                min-height: 320px;
            }
            .hero-stat-card {
                flex-direction: column;
                gap: 10px;
                padding: 20px 16px;
            }
            .hero-stat-item {
                flex: 1 1 auto;
            }
            .hero-actions {
                flex-direction: column;
                width: 100%;
            }
            .hero-actions .btn-primary,
            .hero-actions .btn-secondary {
                width: 100%;
                justify-content: center;
            }
            .metrics-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .metric-item .metric-val {
                font-size: 1.6rem;
            }
            .compare-table {
                min-width: 480px;
                font-size: 0.72rem;
            }
            .section-title {
                font-size: 1.25rem;
            }
            .container {
                padding: 0 16px;
            }
            .btn-primary,
            .btn-secondary {
                padding: 11px 18px;
                font-size: 0.85rem;
            }
        }