/* roulang page: index */
:root {
            --bg-primary: #0A1628;
            --bg-secondary: #0D2137;
            --bg-tertiary: #132B45;
            --accent-cyan: #38BDF8;
            --accent-electric: #22D3EE;
            --accent-green: #34D399;
            --accent-gold: #C8A96A;
            --text-primary: #E2E8F0;
            --text-secondary: #94A3B8;
            --text-muted: #64748B;
            --glass-bg: rgba(255, 255, 255, 0.08);
            --glass-border: rgba(255, 255, 255, 0.12);
            --glass-bg-hover: rgba(255, 255, 255, 0.14);
            --glow-cyan: 0 0 18px rgba(34, 211, 238, 0.35);
            --glow-cyan-hover: 0 0 24px rgba(34, 211, 238, 0.55);
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.35);
            --radius-card: 16px;
            --radius-button: 10px;
            --radius-badge: 6px;
            --spacing-section: 72px;
            --spacing-card: 24px;
            --font-primary: "PingFang SC", "Microsoft YaHei", sans-serif;
            --font-mono: "SF Mono", "Consolas", "Monaco", monospace;
            --container-max: 1200px;
        }

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

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

        body {
            font-family: var(--font-primary);
            background: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            font-size: 16px;
            overflow-x: hidden;
            min-height: 100vh;
        }

        a {
            color: var(--accent-cyan);
            text-decoration: none;
            transition: color 0.25s ease, border-color 0.25s ease;
        }

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

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

        button,
        input,
        select,
        textarea {
            font-family: var(--font-primary);
            font-size: 16px;
        }

        button:focus-visible,
        a:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--accent-electric);
            outline-offset: 2px;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
        }

        /* ========== Header / Navigation ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(10, 22, 40, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            transition: background 0.3s ease, box-shadow 0.3s ease;
        }

        .site-header.scrolled {
            background: rgba(10, 22, 40, 0.97);
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 20px;
        }

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

        .brand-logo {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--accent-electric), var(--accent-cyan));
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 700;
            color: #0A1628;
            letter-spacing: 0;
            box-shadow: var(--glow-cyan);
        }

        .brand-text {
            font-size: 1.35rem;
            font-weight: 700;
            color: #FFFFFF;
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

        .brand-text .brand-highlight {
            color: var(--accent-electric);
        }

        .header-search {
            flex: 1;
            max-width: 360px;
            position: relative;
        }

        .header-search input {
            width: 100%;
            padding: 10px 40px 10px 16px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-button);
            color: var(--text-primary);
            font-size: 14px;
            transition: border-color 0.3s ease, box-shadow 0.3s ease;
        }

        .header-search input::placeholder {
            color: var(--text-muted);
        }

        .header-search input:focus {
            outline: none;
            border-color: var(--accent-cyan);
            box-shadow: 0 0 0 3px rgba(34, 211, 238, 0.1), var(--glow-cyan);
        }

        .header-search .search-icon {
            position: absolute;
            right: 14px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--text-muted);
            font-size: 14px;
            pointer-events: none;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-shrink: 0;
        }

        .version-switch,
        .lang-switch {
            display: flex;
            align-items: center;
            gap: 4px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-button);
            padding: 6px 12px;
            font-size: 13px;
            color: var(--text-secondary);
            cursor: pointer;
            transition: all 0.3s ease;
            white-space: nowrap;
        }

        .version-switch:hover,
        .lang-switch:hover {
            border-color: var(--accent-cyan);
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.1);
        }

        .version-switch .active-version {
            color: var(--accent-electric);
            font-weight: 600;
        }

        .nav-toggle {
            display: none;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-button);
            width: 42px;
            height: 42px;
            color: var(--text-primary);
            font-size: 20px;
            cursor: pointer;
            align-items: center;
            justify-content: center;
            transition: all 0.3s ease;
        }

        .nav-toggle:hover {
            border-color: var(--accent-cyan);
            background: rgba(255, 255, 255, 0.1);
        }

        /* ========== Top Nav Bar ========== */
        .top-nav {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            background: rgba(13, 33, 55, 0.85);
        }

        .top-nav-inner {
            display: flex;
            align-items: center;
            gap: 4px;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
            padding: 0;
        }

        .top-nav-inner::-webkit-scrollbar {
            display: none;
        }

        .top-nav-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 12px 18px;
            font-size: 14px;
            color: var(--text-secondary);
            white-space: nowrap;
            border-bottom: 2px solid transparent;
            transition: all 0.25s ease;
            position: relative;
        }

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

        .top-nav-link.active {
            color: var(--accent-electric);
            border-bottom-color: var(--accent-electric);
            font-weight: 600;
        }

        .top-nav-link i {
            font-size: 14px;
        }

        /* ========== Sidebar ========== */
        .layout-wrapper {
            display: flex;
            min-height: calc(100vh - 68px);
            margin-top: 68px;
        }

        .sidebar {
            position: fixed;
            top: 68px;
            left: 0;
            bottom: 0;
            width: 240px;
            background: rgba(13, 33, 55, 0.9);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-right: 1px solid rgba(255, 255, 255, 0.06);
            padding: 24px 12px;
            overflow-y: auto;
            z-index: 500;
            transition: transform 0.35s ease;
        }

        .sidebar-group {
            margin-bottom: 28px;
        }

        .sidebar-group-title {
            font-size: 12px;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.8px;
            color: var(--text-muted);
            margin-bottom: 10px;
            padding-left: 12px;
        }

        .sidebar-link {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 9px 12px;
            border-radius: 8px;
            font-size: 14px;
            color: var(--text-secondary);
            transition: all 0.25s ease;
            margin-bottom: 2px;
        }

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

        .sidebar-link.active {
            background: rgba(34, 211, 238, 0.12);
            color: var(--accent-electric);
            font-weight: 600;
        }

        .sidebar-link i {
            width: 18px;
            text-align: center;
            font-size: 14px;
        }

        .main-content {
            flex: 1;
            margin-left: 240px;
            min-width: 0;
        }

        /* ========== Hero Section ========== */
        .hero-section {
            position: relative;
            padding: 80px 0 72px;
            background: linear-gradient(165deg, #0A1628 0%, #0D2137 35%, #101B2E 100%);
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: -40%;
            right: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(34, 211, 238, 0.15) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-section::after {
            content: '';
            position: absolute;
            bottom: -30%;
            left: -5%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(56, 189, 248, 0.12) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
            position: relative;
            z-index: 2;
        }

        .hero-content h1 {
            font-size: 2.6rem;
            font-weight: 700;
            line-height: 1.25;
            margin-bottom: 20px;
            color: #FFFFFF;
            letter-spacing: 0.5px;
        }

        .hero-content h1 .hero-keyword {
            color: var(--accent-electric);
            text-shadow: 0 0 24px rgba(34, 211, 238, 0.45);
        }

        .hero-desc {
            font-size: 1.05rem;
            line-height: 1.8;
            color: var(--text-secondary);
            margin-bottom: 28px;
            max-width: 560px;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            margin-bottom: 36px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            padding: 14px 28px;
            border-radius: var(--radius-button);
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            border: none;
            letter-spacing: 0.3px;
            white-space: nowrap;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--accent-electric), var(--accent-cyan));
            color: #0A1628;
            box-shadow: var(--glow-cyan);
            position: relative;
            overflow: hidden;
        }

        .btn-primary:hover {
            box-shadow: var(--glow-cyan-hover);
            transform: translateY(-2px);
            color: #0A1628;
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: var(--glow-cyan);
        }

        .btn-secondary {
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.18);
            color: var(--text-primary);
            backdrop-filter: blur(10px);
        }

        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.14);
            border-color: var(--accent-cyan);
            transform: translateY(-2px);
            color: #FFFFFF;
        }

        .btn-sm {
            padding: 10px 20px;
            font-size: 14px;
        }

        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 28px;
        }

        .hero-stat {
            display: flex;
            flex-direction: column;
        }

        .hero-stat-value {
            font-size: 1.6rem;
            font-weight: 700;
            color: #FFFFFF;
            font-family: var(--font-mono);
            letter-spacing: -0.5px;
        }

        .hero-stat-label {
            font-size: 13px;
            color: var(--text-muted);
            margin-top: 2px;
        }

        .hero-visual {
            position: relative;
        }

        .hero-before-after {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
            position: relative;
        }

        .ba-card {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-card);
            padding: 20px;
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            box-shadow: var(--shadow-card);
            transition: all 0.35s ease;
        }

        .ba-card:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(255, 255, 255, 0.2);
            transform: translateY(-4px);
        }

        .ba-card .ba-label {
            display: inline-block;
            padding: 4px 10px;
            border-radius: var(--radius-badge);
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 12px;
        }

        .ba-before .ba-label {
            background: rgba(100, 116, 139, 0.25);
            color: #94A3B8;
        }

        .ba-after .ba-label {
            background: rgba(52, 211, 153, 0.2);
            color: var(--accent-green);
        }

        .ba-card .ba-icon {
            font-size: 32px;
            margin-bottom: 12px;
            color: var(--accent-cyan);
        }

        .ba-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 8px;
        }

        .ba-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
        }

        .hero-ticker {
            position: relative;
            z-index: 2;
            margin-top: 32px;
            padding: 16px 20px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-card);
            display: flex;
            align-items: center;
            gap: 20px;
            overflow-x: auto;
            scrollbar-width: none;
        }

        .hero-ticker::-webkit-scrollbar {
            display: none;
        }

        .ticker-item {
            display: flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
            font-size: 13px;
            color: var(--text-secondary);
        }

        .ticker-item .ticker-dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent-green);
            animation: pulse-dot 2s ease-in-out infinite;
        }

        @keyframes pulse-dot {
            0%,
            100% {
                opacity: 1;
                box-shadow: 0 0 6px rgba(52, 211, 153, 0.6);
            }
            50% {
                opacity: 0.5;
                box-shadow: 0 0 12px rgba(52, 211, 153, 0.3);
            }
        }

        /* ========== Section Base ========== */
        .section {
            padding: var(--spacing-section) 0;
            position: relative;
        }

        .section-alt {
            background: rgba(13, 33, 55, 0.5);
        }

        .section-header {
            margin-bottom: 40px;
        }

        .section-header h2 {
            font-size: 1.8rem;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 12px;
            letter-spacing: 0.3px;
        }

        .section-header .section-sub {
            font-size: 1rem;
            color: var(--text-secondary);
            line-height: 1.8;
            max-width: 680px;
        }

        .section-tag {
            display: inline-block;
            padding: 6px 14px;
            border-radius: var(--radius-badge);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 14px;
            background: rgba(34, 211, 238, 0.12);
            color: var(--accent-electric);
        }

        .text-center {
            text-align: center;
        }

        .mx-auto {
            margin-left: auto;
            margin-right: auto;
        }

        /* ========== Glass Cards Grid ========== */
        .card-grid {
            display: grid;
            gap: var(--spacing-card);
        }

        .card-grid-3 {
            grid-template-columns: repeat(3, 1fr);
        }

        .card-grid-4 {
            grid-template-columns: repeat(4, 1fr);
        }

        .glass-card {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            padding: 24px;
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            box-shadow: var(--shadow-card);
            transition: all 0.35s ease;
            position: relative;
            overflow: hidden;
        }

        .glass-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, transparent, var(--accent-cyan), transparent);
            opacity: 0;
            transition: opacity 0.35s ease;
        }

        .glass-card:hover {
            background: var(--glass-bg-hover);
            border-color: rgba(255, 255, 255, 0.2);
            transform: translateY(-4px);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.45);
        }

        .glass-card:hover::before {
            opacity: 1;
        }

        .glass-card .card-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            margin-bottom: 16px;
            background: rgba(34, 211, 238, 0.15);
            color: var(--accent-electric);
        }

        .glass-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 8px;
        }

        .glass-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
        }

        .glass-card .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--accent-cyan);
            margin-top: 14px;
            transition: color 0.25s ease;
        }

        .glass-card .card-link:hover {
            color: var(--accent-electric);
        }

        /* ========== Price Cards ========== */
        .price-grid {
            display: grid;
            gap: var(--spacing-card);
        }

        .price-grid-3 {
            grid-template-columns: repeat(3, 1fr);
        }

        .price-card {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            box-shadow: var(--shadow-card);
            transition: all 0.35s ease;
            display: flex;
            flex-direction: column;
            position: relative;
        }

        .price-card:hover {
            background: var(--glass-bg-hover);
            border-color: rgba(255, 255, 255, 0.2);
            transform: translateY(-4px);
        }

        .price-card.featured {
            border-color: var(--accent-electric);
            box-shadow: var(--glow-cyan), var(--shadow-card);
        }

        .price-card .price-badge {
            position: absolute;
            top: -12px;
            right: 20px;
            background: linear-gradient(135deg, var(--accent-electric), var(--accent-cyan));
            color: #0A1628;
            font-size: 12px;
            font-weight: 700;
            padding: 4px 12px;
            border-radius: var(--radius-badge);
            letter-spacing: 0.5px;
        }

        .price-card .price-name {
            font-size: 1.1rem;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 6px;
        }

        .price-card .price-amount {
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--accent-electric);
            font-family: var(--font-mono);
            margin-bottom: 14px;
            letter-spacing: -1px;
        }

        .price-card .price-amount .price-unit {
            font-size: 14px;
            color: var(--text-muted);
            font-weight: 400;
            letter-spacing: 0;
        }

        .price-card .price-features {
            list-style: none;
            margin-bottom: 20px;
            flex: 1;
        }

        .price-card .price-features li {
            padding: 6px 0;
            font-size: 14px;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .price-card .price-features li i {
            color: var(--accent-green);
            font-size: 14px;
            flex-shrink: 0;
        }

        .price-card .price-features li.excluded {
            color: var(--text-muted);
        }

        .price-card .price-features li.excluded i {
            color: var(--text-muted);
        }

        /* ========== List Style ========== */
        .list-container {
            display: flex;
            flex-direction: column;
            gap: 0;
        }

        .list-item {
            display: flex;
            align-items: flex-start;
            gap: 16px;
            padding: 18px 16px;
            border-left: 3px solid transparent;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            transition: all 0.3s ease;
            cursor: pointer;
            border-radius: 0 8px 8px 0;
        }

        .list-item:hover {
            border-left-color: var(--accent-cyan);
            background: rgba(255, 255, 255, 0.04);
        }

        .list-item .list-date {
            font-family: var(--font-mono);
            font-size: 13px;
            color: var(--text-muted);
            white-space: nowrap;
            min-width: 70px;
            padding-top: 2px;
        }

        .list-item .list-body {
            flex: 1;
            min-width: 0;
        }

        .list-item .list-title {
            font-size: 1rem;
            font-weight: 600;
            color: #FFFFFF;
            margin-bottom: 4px;
        }

        .list-item .list-summary {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        .list-item .list-link {
            font-size: 13px;
            font-weight: 600;
            color: var(--accent-cyan);
            margin-top: 6px;
            display: inline-flex;
            align-items: center;
            gap: 4px;
            white-space: nowrap;
        }

        /* ========== Image Card ========== */
        .image-card {
            border-radius: var(--radius-card);
            overflow: hidden;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.08);
            transition: all 0.35s ease;
            position: relative;
        }

        .image-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card);
            border-color: rgba(255, 255, 255, 0.16);
        }

        .image-card .image-wrap {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 9;
        }

        .image-card img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

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

        .image-card .image-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(10, 22, 40, 0.1) 0%, rgba(10, 22, 40, 0.7) 100%);
            display: flex;
            align-items: flex-end;
            padding: 16px;
        }

        .image-card .image-overlay h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 0;
        }

        .image-card .image-body {
            padding: 16px;
        }

        .image-card .image-body p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ========== Badge & Tag ========== */
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 4px 12px;
            border-radius: var(--radius-badge);
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.5px;
            background: rgba(255, 255, 255, 0.08);
            color: var(--text-secondary);
        }

        .badge-cyan {
            background: rgba(34, 211, 238, 0.15);
            color: var(--accent-electric);
        }

        .badge-green {
            background: rgba(52, 211, 153, 0.15);
            color: var(--accent-green);
        }

        .badge-gold {
            background: rgba(200, 169, 106, 0.15);
            color: var(--accent-gold);
        }

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

        .tag {
            padding: 8px 16px;
            border-radius: var(--radius-button);
            font-size: 13px;
            color: var(--text-secondary);
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .tag:hover {
            border-color: var(--accent-cyan);
            color: var(--accent-electric);
            background: rgba(34, 211, 238, 0.1);
        }

        /* ========== Stats Bar ========== */
        .stats-bar {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            padding: 32px 28px;
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            box-shadow: var(--shadow-card);
        }

        .stats-item {
            text-align: center;
        }

        .stats-item .stats-value {
            font-size: 2rem;
            font-weight: 700;
            color: #FFFFFF;
            font-family: var(--font-mono);
            letter-spacing: -1px;
        }

        .stats-item .stats-label {
            font-size: 13px;
            color: var(--text-muted);
            margin-top: 4px;
        }

        /* ========== Testimonial ========== */
        .testimonial-grid {
            display: grid;
            gap: var(--spacing-card);
        }

        .testimonial-grid-3 {
            grid-template-columns: repeat(3, 1fr);
        }

        .testimonial-card {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            padding: 24px;
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            box-shadow: var(--shadow-card);
            transition: all 0.35s ease;
        }

        .testimonial-card:hover {
            background: var(--glass-bg-hover);
            transform: translateY(-4px);
        }

        .testimonial-card .quote-icon {
            font-size: 20px;
            color: var(--accent-gold);
            margin-bottom: 12px;
        }

        .testimonial-card blockquote {
            font-size: 14px;
            line-height: 1.8;
            color: var(--text-secondary);
            margin-bottom: 16px;
            border-left: none;
            padding-left: 0;
        }

        .testimonial-card .author {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .testimonial-card .author-avatar {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-electric), var(--accent-cyan));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            font-weight: 700;
            color: #0A1628;
            flex-shrink: 0;
        }

        .testimonial-card .author-name {
            font-size: 14px;
            font-weight: 600;
            color: #FFFFFF;
        }

        .testimonial-card .author-source {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* ========== FAQ ========== */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            max-width: 760px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: all 0.3s ease;
        }

        .faq-item:hover {
            border-color: rgba(255, 255, 255, 0.2);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 20px;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 20px 18px;
        }

        .faq-answer p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 0;
        }

        /* ========== CTA Section ========== */
        .cta-section {
            position: relative;
            padding: 72px 0;
            background: linear-gradient(135deg, #0D2137 0%, #0A1628 50%, #0D2137 100%);
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 700px;
            height: 300px;
            background: radial-gradient(ellipse, rgba(34, 211, 238, 0.12) 0%, transparent 70%);
            pointer-events: none;
        }

        .cta-content {
            text-align: center;
            position: relative;
            z-index: 2;
        }

        .cta-content h2 {
            font-size: 2rem;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 12px;
        }

        .cta-content p {
            font-size: 1rem;
            color: var(--text-secondary);
            margin-bottom: 28px;
            max-width: 540px;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.8;
        }

        /* ========== Footer ========== */
        .site-footer {
            background: #081020;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 40px 0 20px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 28px;
        }

        .footer-brand h3 {
            font-size: 1.3rem;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 10px;
        }

        .footer-brand p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            max-width: 280px;
        }

        .footer-col h4 {
            font-size: 1rem;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 14px;
        }

        .footer-col ul {
            list-style: none;
        }

        .footer-col ul li {
            margin-bottom: 8px;
        }

        .footer-col ul li a {
            font-size: 14px;
            color: var(--text-secondary);
            transition: color 0.25s ease;
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 18px;
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            align-items: center;
            justify-content: space-between;
            font-size: 13px;
            color: var(--text-muted);
        }

        .footer-bottom a {
            color: var(--text-muted);
            transition: color 0.25s ease;
        }

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

        /* ========== Responsive ========== */
        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .card-grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }

            .price-grid-3 {
                grid-template-columns: repeat(2, 1fr);
            }

            .testimonial-grid-3 {
                grid-template-columns: repeat(2, 1fr);
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }

            .stats-bar {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .sidebar {
                transform: translateX(-100%);
                width: 260px;
                top: 96px;
                box-shadow: 8px 0 32px rgba(0, 0, 0, 0.5);
            }

            .sidebar.open {
                transform: translateX(0);
            }

            .main-content {
                margin-left: 0;
            }

            .nav-toggle {
                display: flex;
            }

            .header-search {
                display: none;
            }

            .version-switch,
            .lang-switch {
                font-size: 12px;
                padding: 5px 8px;
            }

            .hero-content h1 {
                font-size: 1.8rem;
            }

            .hero-before-after {
                grid-template-columns: 1fr;
            }

            .card-grid-3,
            .card-grid-4,
            .price-grid-3,
            .testimonial-grid-3 {
                grid-template-columns: 1fr;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .stats-bar {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .btn {
                padding: 12px 20px;
                font-size: 14px;
            }

            .section {
                padding: 48px 0;
            }

            .cta-section {
                padding: 48px 0;
            }

            .hero-section {
                padding: 60px 0 48px;
            }

            .top-nav-link {
                padding: 10px 12px;
                font-size: 13px;
            }
        }

        @media (max-width: 520px) {
            .header-inner {
                height: 60px;
                gap: 10px;
            }

            .brand-text {
                font-size: 1.1rem;
            }

            .brand-logo {
                width: 34px;
                height: 34px;
                font-size: 16px;
            }

            .hero-content h1 {
                font-size: 1.5rem;
            }

            .hero-stats {
                gap: 16px;
            }

            .hero-stat-value {
                font-size: 1.3rem;
            }

            .btn {
                width: 100%;
                justify-content: center;
            }

            .hero-actions {
                flex-direction: column;
            }

            .section-header h2 {
                font-size: 1.4rem;
            }

            .stats-item .stats-value {
                font-size: 1.5rem;
            }
        }

/* roulang page: category2 */
:root {
            --bg-primary: #0A1628;
            --bg-secondary: #0D2137;
            --bg-tertiary: #132B45;
            --accent-cyan: #38BDF8;
            --accent-electric: #22D3EE;
            --accent-green: #34D399;
            --accent-gold: #C8A96A;
            --text-primary: #E2E8F0;
            --text-secondary: #94A3B8;
            --text-muted: #64748B;
            --glass-bg: rgba(255, 255, 255, 0.08);
            --glass-border: rgba(255, 255, 255, 0.12);
            --glass-bg-hover: rgba(255, 255, 255, 0.14);
            --glow-cyan: 0 0 18px rgba(34, 211, 238, 0.35);
            --glow-cyan-hover: 0 0 24px rgba(34, 211, 238, 0.55);
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.35);
            --radius-card: 16px;
            --radius-button: 10px;
            --radius-badge: 6px;
            --spacing-section: 72px;
            --spacing-card: 24px;
            --font-primary: "PingFang SC", "Microsoft YaHei", sans-serif;
            --font-mono: "SF Mono", "Consolas", "Monaco", monospace;
            --container-max: 1200px;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        body {
            font-family: var(--font-primary);
            background: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            font-size: 16px;
            overflow-x: hidden;
            min-height: 100vh;
            margin: 0;
            padding-top: 116px;
        }
        a {
            color: var(--accent-cyan);
            text-decoration: none;
            transition: color 0.25s ease, border-color 0.25s ease;
        }
        a:hover {
            color: var(--accent-electric);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: var(--font-primary);
            font-size: 16px;
        }
        button:focus-visible,
        a:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--accent-electric);
            outline-offset: 2px;
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
        }
        /* ========== Header / Navigation ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(10, 22, 40, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            transition: background 0.3s ease, box-shadow 0.3s ease;
        }
        .site-header.scrolled {
            background: rgba(10, 22, 40, 0.97);
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 20px;
        }
        .brand {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .brand-logo {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--accent-electric), var(--accent-cyan));
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 700;
            color: #0A1628;
            letter-spacing: 0;
            box-shadow: var(--glow-cyan);
        }
        .brand-text {
            font-size: 1.35rem;
            font-weight: 700;
            color: #FFFFFF;
            letter-spacing: 0.5px;
            white-space: nowrap;
        }
        .brand-text .brand-highlight {
            color: var(--accent-electric);
        }
        .header-search {
            flex: 1;
            max-width: 360px;
            position: relative;
        }
        .header-search input {
            width: 100%;
            padding: 10px 40px 10px 16px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-button);
            color: var(--text-primary);
            font-size: 14px;
            transition: border-color 0.3s ease, box-shadow 0.3s ease;
        }
        .header-search input::placeholder {
            color: var(--text-muted);
        }
        .header-search input:focus {
            outline: none;
            border-color: var(--accent-cyan);
            box-shadow: 0 0 0 3px rgba(34, 211, 238, 0.1), var(--glow-cyan);
        }
        .header-search .search-icon {
            position: absolute;
            right: 14px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--text-muted);
            font-size: 14px;
            pointer-events: none;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-shrink: 0;
        }
        .version-switch,
        .lang-switch {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-button);
            color: var(--text-secondary);
            padding: 8px 12px;
            font-size: 13px;
            cursor: pointer;
            transition: all 0.3s ease;
            white-space: nowrap;
        }
        .version-switch:hover,
        .lang-switch:hover {
            border-color: var(--accent-cyan);
            background: rgba(255, 255, 255, 0.1);
            color: var(--text-primary);
        }
        .active-version {
            color: var(--accent-electric);
            font-weight: 600;
        }
        .nav-toggle {
            display: none;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-button);
            width: 42px;
            height: 42px;
            color: var(--text-primary);
            font-size: 20px;
            cursor: pointer;
            align-items: center;
            justify-content: center;
            transition: all 0.3s ease;
        }
        .nav-toggle:hover {
            border-color: var(--accent-cyan);
            background: rgba(255, 255, 255, 0.1);
        }
        /* ========== Top Nav Bar ========== */
        .top-nav {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            background: rgba(13, 33, 55, 0.85);
        }
        .top-nav-inner {
            display: flex;
            align-items: center;
            gap: 8px;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
            padding: 8px 0;
        }
        .top-nav-inner::-webkit-scrollbar {
            display: none;
        }
        .top-nav-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            border-radius: var(--radius-button);
            color: var(--text-secondary);
            font-size: 14px;
            font-weight: 500;
            white-space: nowrap;
            transition: all 0.3s ease;
            border: 1px solid transparent;
        }
        .top-nav-link:hover {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.06);
        }
        .top-nav-link.active {
            color: var(--accent-electric);
            background: rgba(34, 211, 238, 0.08);
            border-color: rgba(34, 211, 238, 0.2);
        }
        .top-nav-link i {
            font-size: 13px;
        }
        /* ========== Breadcrumb ========== */
        .breadcrumb-bar {
            padding: 16px 0 0;
            font-size: 13px;
            color: var(--text-muted);
        }
        .breadcrumb-bar span {
            margin: 0 6px;
        }
        .breadcrumb-bar a {
            color: var(--text-muted);
            transition: color 0.3s;
        }
        .breadcrumb-bar a:hover {
            color: var(--accent-electric);
        }
        /* ========== Page H1 Compact ========== */
        .page-h1-zone {
            padding: 28px 0 32px;
            background: linear-gradient(135deg, rgba(13, 33, 55, 0.95), rgba(10, 22, 40, 0.9));
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            margin-bottom: 40px;
        }
        .page-h1-zone h1 {
            font-size: 2rem;
            font-weight: 700;
            color: #FFFFFF;
            margin: 0 0 10px;
            letter-spacing: 0.5px;
        }
        .page-h1-zone .subtitle {
            font-size: 1rem;
            color: var(--text-secondary);
            margin: 0;
            max-width: 700px;
        }
        /* ========== Section Base ========== */
        section {
            padding: 32px 0;
        }
        .section-title {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 20px;
            letter-spacing: 0.3px;
        }
        .section-desc {
            font-size: 0.95rem;
            color: var(--text-secondary);
            margin: -10px 0 24px;
            max-width: 780px;
        }
        /* ========== Data List Cards ========== */
        .data-list {
            display: flex;
            flex-direction: column;
            gap: 0;
        }
        .data-list-item {
            display: flex;
            align-items: flex-start;
            gap: 16px;
            padding: 18px 16px 18px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.07);
            transition: all 0.3s ease;
            border-left: 3px solid transparent;
            border-radius: 0 8px 8px 0;
        }
        .data-list-item:hover {
            border-left-color: var(--accent-electric);
            background: rgba(255, 255, 255, 0.03);
            padding-left: 14px;
        }
        .data-date {
            font-size: 12px;
            color: var(--text-muted);
            min-width: 72px;
            padding-top: 3px;
            font-family: var(--font-mono);
            letter-spacing: 0.5px;
        }
        .data-content {
            flex: 1;
        }
        .data-content h3 {
            font-size: 1.1rem;
            font-weight: 600;
            margin: 0 0 8px;
            color: var(--text-primary);
            line-height: 1.4;
        }
        .data-content h3 a {
            color: var(--text-primary);
            transition: color 0.3s;
        }
        .data-content h3 a:hover {
            color: var(--accent-electric);
        }
        .data-summary {
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin: 0;
            line-height: 1.7;
        }
        .data-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            margin-top: 8px;
        }
        .data-tag {
            font-size: 12px;
            padding: 3px 10px;
            border-radius: var(--radius-badge);
            background: rgba(34, 211, 238, 0.08);
            border: 1px solid rgba(34, 211, 238, 0.18);
            color: var(--accent-electric);
            white-space: nowrap;
        }
        .data-tag.gold {
            background: rgba(200, 169, 106, 0.1);
            border-color: rgba(200, 169, 106, 0.25);
            color: var(--accent-gold);
        }
        .data-tag.green {
            background: rgba(52, 211, 153, 0.1);
            border-color: rgba(52, 211, 153, 0.2);
            color: var(--accent-green);
        }
        /* ========== Info Panel ========== */
        .info-panel {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            padding: 28px;
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            box-shadow: var(--shadow-card);
        }
        .info-panel h3 {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: 0 0 12px;
        }
        .info-panel p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.8;
            margin-bottom: 12px;
        }
        /* ========== Tag Cloud / Sidebar ========== */
        .sidebar-card {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            padding: 24px;
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            box-shadow: var(--shadow-card);
            margin-bottom: 20px;
        }
        .sidebar-card h4 {
            font-size: 1rem;
            font-weight: 700;
            margin: 0 0 14px;
            color: var(--text-primary);
        }
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .tag-cloud a {
            display: inline-block;
            padding: 6px 14px;
            border-radius: var(--radius-badge);
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            color: var(--text-secondary);
            font-size: 13px;
            transition: all 0.3s ease;
        }
        .tag-cloud a:hover {
            background: rgba(34, 211, 238, 0.1);
            border-color: rgba(34, 211, 238, 0.3);
            color: var(--accent-electric);
        }
        .hot-list {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .hot-list li {
            padding: 10px 0;
            border-bottom: 1px dashed rgba(255, 255, 255, 0.07);
        }
        .hot-list li:last-child {
            border-bottom: none;
        }
        .hot-list a {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 14px;
            color: var(--text-secondary);
            transition: color 0.3s;
        }
        .hot-list a:hover {
            color: var(--accent-electric);
        }
        .hot-list .num {
            color: var(--text-muted);
            font-family: var(--font-mono);
            font-size: 12px;
        }
        /* ========== Featured Cards Row ========== */
        .featured-row {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            margin-top: 16px;
        }
        .featured-card {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all 0.3s ease;
        }
        .featured-card:hover {
            transform: translateY(-4px);
            border-color: rgba(34, 211, 238, 0.3);
            box-shadow: 0 12px 36px rgba(0, 0, 0, 0.4);
        }
        .featured-card img {
            width: 100%;
            height: 180px;
            object-fit: cover;
        }
        .featured-card-body {
            padding: 18px 20px 20px;
        }
        .featured-card-body h4 {
            font-size: 1.05rem;
            font-weight: 600;
            margin: 0 0 8px;
            color: var(--text-primary);
            line-height: 1.4;
        }
        .featured-card-body p {
            font-size: 0.85rem;
            color: var(--text-secondary);
            margin: 0 0 12px;
            line-height: 1.6;
        }
        /* ========== FAQ ========== */
        .faq-section {
            padding: 32px 0;
        }
        .faq-item {
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-card);
            background: var(--glass-bg);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            margin-bottom: 12px;
            overflow: hidden;
            transition: all 0.3s ease;
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-primary);
            background: transparent;
            border: none;
            cursor: pointer;
            text-align: left;
            gap: 16px;
            transition: all 0.3s ease;
        }
        .faq-question i {
            color: var(--accent-electric);
            font-size: 14px;
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }
        .faq-answer {
            display: none;
            padding: 0 24px 18px;
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            display: block;
        }
        .faq-item.open {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(34, 211, 238, 0.2);
        }
        /* ========== Grid Layout ========== */
        .page-grid {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 28px;
            align-items: start;
        }
        .main-col {
            min-width: 0;
        }
        .side-col {
            min-width: 0;
        }
        /* ========== CTA / Buttons ========== */
        .btn-glow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 28px;
            background: linear-gradient(135deg, var(--accent-electric), var(--accent-cyan));
            border: none;
            border-radius: var(--radius-button);
            color: #0A1628;
            font-weight: 700;
            font-size: 15px;
            cursor: pointer;
            transition: all 0.3s ease;
            box-shadow: var(--glow-cyan);
            text-decoration: none;
        }
        .btn-glow:hover {
            box-shadow: var(--glow-cyan-hover);
            transform: translateY(-2px);
            color: #0A1628;
        }
        .btn-glass {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 24px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: var(--radius-button);
            color: var(--text-primary);
            font-weight: 600;
            font-size: 15px;
            cursor: pointer;
            transition: all 0.3s ease;
            text-decoration: none;
        }
        .btn-glass:hover {
            border-color: var(--accent-cyan);
            background: rgba(255, 255, 255, 0.1);
            color: var(--accent-electric);
        }
        .btn-text {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 500;
            color: var(--accent-cyan);
            transition: all 0.3s;
        }
        .btn-text:hover {
            color: var(--accent-electric);
            gap: 10px;
        }
        /* ========== Data Stats Strip ========== */
        .stats-strip {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
            margin: 20px 0;
        }
        .stat-block {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            padding: 20px 16px;
            text-align: center;
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
        }
        .stat-number {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--accent-electric);
            font-family: var(--font-mono);
            letter-spacing: 0.5px;
        }
        .stat-label {
            font-size: 0.85rem;
            color: var(--text-secondary);
            margin-top: 4px;
        }
        /* ========== Footer ========== */
        .site-footer {
            background: var(--bg-secondary);
            border-top: 1px solid rgba(255, 255, 255, 0.07);
            padding: 48px 0 24px;
            margin-top: 48px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-brand h3 {
            font-size: 1.3rem;
            font-weight: 700;
            margin: 0 0 12px;
            color: #FFFFFF;
        }
        .footer-brand p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin: 0;
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: 0 0 14px;
        }
        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul a {
            font-size: 0.85rem;
            color: var(--text-muted);
            transition: color 0.3s;
        }
        .footer-col ul a:hover {
            color: var(--accent-electric);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
            justify-content: space-between;
            font-size: 0.8rem;
            color: var(--text-muted);
        }
        .footer-bottom a {
            color: var(--text-muted);
            transition: color 0.3s;
        }
        .footer-bottom a:hover {
            color: var(--accent-electric);
        }
        /* ========== Responsive ========== */
        @media (max-width: 1024px) {
            .page-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .side-col {
                order: -1;
            }
            .featured-row {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            body {
                padding-top: 104px;
            }
            .header-inner {
                height: 58px;
                gap: 12px;
            }
            .header-search {
                display: none;
            }
            .version-switch,
            .lang-switch {
                display: none;
            }
            .nav-toggle {
                display: inline-flex;
            }
            .top-nav-inner {
                flex-wrap: nowrap;
                overflow-x: auto;
                padding: 6px 0;
            }
            .page-h1-zone h1 {
                font-size: 1.5rem;
            }
            .section-title {
                font-size: 1.25rem;
            }
            .data-list-item {
                flex-direction: column;
                gap: 8px;
                padding: 14px 12px;
            }
            .data-date {
                min-width: auto;
            }
            .featured-row {
                grid-template-columns: 1fr;
            }
            .featured-card img {
                height: 160px;
            }
            .stats-strip {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
            .info-panel {
                padding: 20px;
            }
        }
        @media (max-width: 520px) {
            section {
                padding: 20px 0;
            }
            .page-h1-zone {
                padding: 20px 0 24px;
                margin-bottom: 24px;
            }
            .page-h1-zone h1 {
                font-size: 1.3rem;
            }
            .btn-glow,
            .btn-glass {
                width: 100%;
                justify-content: center;
                padding: 12px 20px;
                font-size: 14px;
            }
            .stats-strip {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .stat-number {
                font-size: 1.3rem;
            }
            .faq-question {
                padding: 14px 16px;
                font-size: 0.85rem;
            }
        }

/* roulang page: category1 */
:root {
            --bg-primary: #0A1628;
            --bg-secondary: #0D2137;
            --bg-tertiary: #132B45;
            --accent-cyan: #38BDF8;
            --accent-electric: #22D3EE;
            --accent-green: #34D399;
            --accent-gold: #C8A96A;
            --text-primary: #E2E8F0;
            --text-secondary: #94A3B8;
            --text-muted: #64748B;
            --glass-bg: rgba(255, 255, 255, 0.08);
            --glass-border: rgba(255, 255, 255, 0.12);
            --glass-bg-hover: rgba(255, 255, 255, 0.14);
            --glow-cyan: 0 0 18px rgba(34, 211, 238, 0.35);
            --glow-cyan-hover: 0 0 24px rgba(34, 211, 238, 0.55);
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.35);
            --radius-card: 16px;
            --radius-button: 10px;
            --radius-badge: 6px;
            --spacing-section: 72px;
            --spacing-card: 24px;
            --font-primary: "PingFang SC", "Microsoft YaHei", sans-serif;
            --font-mono: "SF Mono", "Consolas", "Monaco", monospace;
            --container-max: 1200px;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--font-primary);
            background: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            font-size: 16px;
            overflow-x: hidden;
            min-height: 100vh;
            padding-top: 116px;
        }
        a {
            color: var(--accent-cyan);
            text-decoration: none;
            transition: color 0.25s ease, border-color 0.25s ease, background 0.25s ease;
        }
        a:hover {
            color: var(--accent-electric);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button, input, select, textarea {
            font-family: var(--font-primary);
            font-size: 16px;
        }
        button:focus-visible, a:focus-visible, input:focus-visible {
            outline: 2px solid var(--accent-electric);
            outline-offset: 2px;
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
        }

        /* ========== Header / Navigation ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(10, 22, 40, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            transition: background 0.3s ease, box-shadow 0.3s ease;
        }
        .site-header.scrolled {
            background: rgba(10, 22, 40, 0.97);
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 20px;
        }
        .brand {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .brand-logo {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--accent-electric), var(--accent-cyan));
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 700;
            color: #0A1628;
            letter-spacing: 0;
            box-shadow: var(--glow-cyan);
        }
        .brand-text {
            font-size: 1.35rem;
            font-weight: 700;
            color: #FFFFFF;
            letter-spacing: 0.5px;
            white-space: nowrap;
        }
        .brand-text .brand-highlight {
            color: var(--accent-electric);
        }
        .header-search {
            flex: 1;
            max-width: 360px;
            position: relative;
        }
        .header-search input {
            width: 100%;
            padding: 10px 40px 10px 16px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-button);
            color: var(--text-primary);
            font-size: 14px;
            transition: border-color 0.3s ease, box-shadow 0.3s ease;
        }
        .header-search input::placeholder {
            color: var(--text-muted);
        }
        .header-search input:focus {
            outline: none;
            border-color: var(--accent-cyan);
            box-shadow: 0 0 0 3px rgba(34, 211, 238, 0.1), var(--glow-cyan);
        }
        .header-search .search-icon {
            position: absolute;
            right: 14px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--text-muted);
            font-size: 14px;
            pointer-events: none;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-shrink: 0;
        }
        .version-switch, .lang-switch {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-button);
            padding: 8px 14px;
            color: var(--text-secondary);
            font-size: 13px;
            cursor: pointer;
            transition: all 0.3s ease;
            white-space: nowrap;
        }
        .version-switch:hover, .lang-switch:hover {
            border-color: var(--accent-cyan);
            background: rgba(255, 255, 255, 0.1);
            color: var(--text-primary);
        }
        .version-switch .active-version {
            color: var(--accent-electric);
            font-weight: 600;
        }
        .nav-toggle {
            display: none;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-button);
            width: 42px;
            height: 42px;
            color: var(--text-primary);
            font-size: 20px;
            cursor: pointer;
            align-items: center;
            justify-content: center;
            transition: all 0.3s ease;
        }
        .nav-toggle:hover {
            border-color: var(--accent-cyan);
            background: rgba(255, 255, 255, 0.1);
        }

        /* ========== Top Nav Bar ========== */
        .top-nav {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            background: rgba(13, 33, 55, 0.85);
        }
        .top-nav-inner {
            display: flex;
            align-items: center;
            gap: 4px;
            overflow-x: auto;
            padding: 8px 0;
            scrollbar-width: thin;
            scrollbar-color: rgba(255, 255, 255, 0.15) transparent;
        }
        .top-nav-inner::-webkit-scrollbar {
            height: 3px;
        }
        .top-nav-inner::-webkit-scrollbar-track {
            background: transparent;
        }
        .top-nav-inner::-webkit-scrollbar-thumb {
            background: rgba(255, 255, 255, 0.15);
            border-radius: 10px;
        }
        .top-nav-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 14px;
            border-radius: var(--radius-button);
            color: var(--text-secondary);
            font-size: 14px;
            font-weight: 500;
            white-space: nowrap;
            transition: all 0.25s ease;
            border: 1px solid transparent;
        }
        .top-nav-link i {
            font-size: 13px;
        }
        .top-nav-link:hover {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.06);
            border-color: rgba(255, 255, 255, 0.08);
        }
        .top-nav-link.active {
            color: var(--accent-electric);
            background: rgba(34, 211, 238, 0.08);
            border-color: rgba(34, 211, 238, 0.2);
            font-weight: 600;
        }

        /* ========== Breadcrumb ========== */
        .breadcrumb-bar {
            background: rgba(13, 33, 55, 0.6);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            padding: 12px 0;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-muted);
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--text-secondary);
        }
        .breadcrumb a:hover {
            color: var(--accent-electric);
        }
        .breadcrumb .separator {
            color: var(--text-muted);
            font-size: 11px;
        }
        .breadcrumb .current {
            color: var(--accent-cyan);
            font-weight: 500;
        }

        /* ========== Main Layout with Sidebar ========== */
        .main-layout {
            display: flex;
            gap: 32px;
            padding: 32px 0 16px;
            align-items: flex-start;
        }
        .doc-sidebar {
            width: 240px;
            flex-shrink: 0;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-card);
            padding: 20px 16px;
            position: sticky;
            top: 140px;
            max-height: calc(100vh - 160px);
            overflow-y: auto;
        }
        .doc-sidebar-title {
            font-size: 13px;
            font-weight: 700;
            color: var(--text-secondary);
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 14px;
            padding-bottom: 10px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .doc-sidebar-link {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 9px 12px;
            border-radius: 8px;
            color: var(--text-secondary);
            font-size: 14px;
            transition: all 0.25s ease;
            margin-bottom: 2px;
        }
        .doc-sidebar-link i {
            font-size: 13px;
            width: 18px;
            text-align: center;
            color: var(--text-muted);
        }
        .doc-sidebar-link:hover {
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-primary);
        }
        .doc-sidebar-link.active {
            background: rgba(34, 211, 238, 0.1);
            color: var(--accent-electric);
            font-weight: 600;
        }
        .doc-sidebar-link.active i {
            color: var(--accent-electric);
        }
        .content-area {
            flex: 1;
            min-width: 0;
        }

        /* ========== Category H1 Header ========== */
        .category-hero {
            background: linear-gradient(135deg, rgba(13, 33, 55, 0.9) 0%, rgba(10, 22, 40, 0.95) 50%, rgba(30, 58, 95, 0.8) 100%);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-card);
            padding: 36px 32px;
            margin-bottom: 32px;
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }
        .category-hero::before {
            content: '';
            position: absolute;
            top: -60%;
            right: -10%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(34, 211, 238, 0.12) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .category-hero::after {
            content: '';
            position: absolute;
            bottom: -40%;
            left: 20%;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(56, 189, 248, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .category-hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(34, 211, 238, 0.1);
            border: 1px solid rgba(34, 211, 238, 0.25);
            border-radius: var(--radius-badge);
            padding: 5px 12px;
            font-size: 13px;
            color: var(--accent-electric);
            font-weight: 600;
            margin-bottom: 16px;
        }
        .category-hero h1 {
            font-size: 2.2rem;
            font-weight: 700;
            color: #FFFFFF;
            margin: 0 0 12px 0;
            letter-spacing: 0.5px;
        }
        .category-hero .category-subtitle {
            font-size: 1.05rem;
            color: var(--text-secondary);
            max-width: 700px;
            margin: 0;
            line-height: 1.7;
        }

        /* ========== Match List Section ========== */
        .match-list-section {
            margin-bottom: 40px;
        }
        .section-heading {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 20px;
            flex-wrap: wrap;
            gap: 12px;
        }
        .section-heading h2 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: 0;
            letter-spacing: 0.3px;
        }
        .section-heading .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-badge);
            padding: 4px 10px;
            font-size: 12px;
            color: var(--text-muted);
        }
        .match-list {
            list-style: none;
            margin: 0;
            padding: 0;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-card);
            overflow: hidden;
        }
        .match-item {
            display: flex;
            align-items: flex-start;
            gap: 20px;
            padding: 18px 22px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            transition: all 0.25s ease;
            position: relative;
            cursor: pointer;
        }
        .match-item:last-child {
            border-bottom: none;
        }
        .match-item::before {
            content: '';
            position: absolute;
            left: 0;
            top: 0;
            bottom: 0;
            width: 3px;
            background: transparent;
            transition: background 0.25s ease;
        }
        .match-item:hover {
            background: rgba(255, 255, 255, 0.06);
        }
        .match-item:hover::before {
            background: var(--accent-electric);
        }
        .match-date {
            flex-shrink: 0;
            min-width: 70px;
            text-align: center;
            background: rgba(255, 255, 255, 0.05);
            border-radius: 8px;
            padding: 8px 10px;
        }
        .match-date .day {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--accent-electric);
            line-height: 1.1;
        }
        .match-date .month {
            font-size: 12px;
            color: var(--text-muted);
            margin-top: 2px;
        }
        .match-info {
            flex: 1;
            min-width: 0;
        }
        .match-info-header {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
            margin-bottom: 6px;
        }
        .match-badge {
            display: inline-block;
            padding: 3px 10px;
            border-radius: var(--radius-badge);
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.3px;
            white-space: nowrap;
        }
        .match-badge.football {
            background: rgba(52, 211, 153, 0.12);
            color: var(--accent-green);
            border: 1px solid rgba(52, 211, 153, 0.2);
        }
        .match-badge.basketball {
            background: rgba(56, 189, 248, 0.12);
            color: var(--accent-cyan);
            border: 1px solid rgba(56, 189, 248, 0.2);
        }
        .match-league {
            font-size: 12px;
            color: var(--text-muted);
            letter-spacing: 0.5px;
        }
        .match-title {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-primary);
            line-height: 1.5;
            margin-bottom: 4px;
        }
        .match-summary {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin: 0;
        }

        /* ========== Guide Section ========== */
        .guide-section {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-card);
            padding: 32px 28px;
            margin-bottom: 40px;
        }
        .guide-section h2 {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: 0 0 16px 0;
        }
        .guide-section h3 {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--accent-cyan);
            margin: 20px 0 10px 0;
        }
        .guide-section p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.9;
            margin-bottom: 14px;
        }
        .guide-section .highlight-box {
            background: rgba(34, 211, 238, 0.06);
            border-left: 3px solid var(--accent-electric);
            border-radius: 0 8px 8px 0;
            padding: 16px 18px;
            margin: 16px 0;
            font-size: 14px;
            color: var(--text-primary);
            line-height: 1.8;
        }

        /* ========== Tags Cloud ========== */
        .tags-section {
            margin-bottom: 40px;
        }
        .tags-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        .tag-link {
            display: inline-block;
            padding: 8px 16px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 20px;
            color: var(--text-secondary);
            font-size: 13px;
            transition: all 0.25s ease;
        }
        .tag-link:hover {
            background: rgba(34, 211, 238, 0.1);
            border-color: rgba(34, 211, 238, 0.3);
            color: var(--accent-electric);
            transform: translateY(-1px);
        }

        /* ========== Featured Matches ========== */
        .featured-section {
            margin-bottom: 40px;
        }
        .featured-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
            gap: 20px;
        }
        .featured-card {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: all 0.3s ease;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
        }
        .featured-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card);
            border-color: rgba(34, 211, 238, 0.2);
        }
        .featured-card img {
            width: 100%;
            height: 180px;
            object-fit: cover;
        }
        .featured-card-body {
            padding: 18px 20px;
        }
        .featured-card-body h3 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-primary);
            margin: 0 0 8px 0;
            line-height: 1.4;
        }
        .featured-card-body p {
            font-size: 13px;
            color: var(--text-secondary);
            margin: 0;
            line-height: 1.6;
        }

        /* ========== FAQ Section ========== */
        .faq-section {
            margin-bottom: 40px;
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-card);
            padding: 28px 28px 16px;
        }
        .faq-section h2 {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: 0 0 16px 0;
        }
        .faq-item {
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            padding-bottom: 4px;
        }
        .faq-item:last-child {
            border-bottom: none;
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            width: 100%;
            background: none;
            border: none;
            padding: 16px 0;
            cursor: pointer;
            text-align: left;
            color: var(--text-primary);
            font-size: 15px;
            font-weight: 600;
            line-height: 1.5;
            transition: color 0.25s ease;
        }
        .faq-question:hover {
            color: var(--accent-electric);
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            color: var(--text-secondary);
            transition: all 0.3s ease;
        }
        .faq-question.active .faq-icon {
            background: rgba(34, 211, 238, 0.15);
            border-color: rgba(34, 211, 238, 0.3);
            color: var(--accent-electric);
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            color: var(--text-secondary);
            font-size: 14px;
            line-height: 1.8;
            padding: 0;
        }
        .faq-answer.open {
            max-height: 300px;
            padding: 0 0 16px 0;
        }

        /* ========== Bottom CTA / More Link ========== */
        .bottom-section {
            margin-bottom: 40px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-card);
            padding: 20px 24px;
        }
        .bottom-section p {
            margin: 0;
            color: var(--text-secondary);
            font-size: 14px;
        }
        .btn-more {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 20px;
            background: rgba(34, 211, 238, 0.1);
            border: 1px solid rgba(34, 211, 238, 0.25);
            border-radius: var(--radius-button);
            color: var(--accent-electric);
            font-size: 14px;
            font-weight: 600;
            transition: all 0.3s ease;
        }
        .btn-more:hover {
            background: rgba(34, 211, 238, 0.18);
            border-color: rgba(34, 211, 238, 0.4);
            box-shadow: var(--glow-cyan);
            transform: translateY(-2px);
        }

        /* ========== Stats Bar ========== */
        .stats-bar {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
            gap: 16px;
            margin-bottom: 40px;
        }
        .stat-item {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-card);
            padding: 20px;
            text-align: center;
        }
        .stat-number {
            font-size: 2rem;
            font-weight: 700;
            color: var(--accent-electric);
            font-family: var(--font-mono);
            line-height: 1.2;
        }
        .stat-label {
            font-size: 13px;
            color: var(--text-muted);
            margin-top: 6px;
        }

        /* ========== Footer ========== */
        .site-footer {
            background: rgba(13, 33, 55, 0.85);
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 48px 0 20px;
            margin-top: 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-brand h3 {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: 0 0 12px 0;
        }
        .footer-brand h3 .brand-highlight {
            color: var(--accent-electric);
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin: 0;
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 14px;
            font-weight: 700;
            color: var(--text-primary);
            margin: 0 0 12px 0;
            letter-spacing: 0.5px;
        }
        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            font-size: 13px;
            color: var(--text-secondary);
            transition: color 0.25s ease;
        }
        .footer-col ul li a:hover {
            color: var(--accent-electric);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            flex-wrap: wrap;
            font-size: 12px;
            color: var(--text-muted);
        }
        .footer-bottom a {
            color: var(--text-muted);
            font-size: 12px;
        }
        .footer-bottom a:hover {
            color: var(--accent-electric);
        }

        /* ========== Responsive ========== */
        @media (max-width: 1024px) {
            .main-layout {
                gap: 24px;
            }
            .doc-sidebar {
                width: 200px;
            }
            .category-hero h1 {
                font-size: 1.8rem;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            body {
                padding-top: 106px;
            }
            .header-search {
                display: none;
            }
            .version-switch, .lang-switch {
                display: none;
            }
            .nav-toggle {
                display: flex;
            }
            .top-nav-inner {
                flex-wrap: nowrap;
            }
            .main-layout {
                flex-direction: column;
                padding-top: 16px;
            }
            .doc-sidebar {
                display: none;
            }
            .category-hero {
                padding: 24px 20px;
            }
            .category-hero h1 {
                font-size: 1.5rem;
            }
            .match-item {
                flex-direction: column;
                gap: 10px;
                padding: 14px 16px;
            }
            .match-date {
                min-width: auto;
                display: flex;
                align-items: center;
                gap: 8px;
                text-align: left;
                padding: 4px 0;
                background: none;
            }
            .match-date .day {
                font-size: 1.2rem;
            }
            .match-date .month {
                margin-top: 0;
            }
            .match-title {
                font-size: 0.95rem;
            }
            .featured-grid {
                grid-template-columns: 1fr;
            }
            .stats-bar {
                grid-template-columns: repeat(2, 1fr);
            }
            .bottom-section {
                flex-direction: column;
                align-items: flex-start;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 6px;
            }
        }
        @media (max-width: 520px) {
            .header-inner {
                gap: 12px;
            }
            .brand-text {
                font-size: 1.15rem;
            }
            .category-hero h1 {
                font-size: 1.3rem;
            }
            .category-hero .category-subtitle {
                font-size: 0.95rem;
            }
            .section-heading h2 {
                font-size: 1.25rem;
            }
            .stats-bar {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .stat-number {
                font-size: 1.5rem;
            }
            .guide-section {
                padding: 20px 16px;
            }
            .faq-section {
                padding: 20px 16px 8px;
            }
            .match-summary {
                font-size: 13px;
            }
        }

/* roulang page: category3 */
:root {
            --bg-primary: #0A1628;
            --bg-secondary: #0D2137;
            --bg-tertiary: #132B45;
            --accent-cyan: #38BDF8;
            --accent-electric: #22D3EE;
            --accent-green: #34D399;
            --accent-gold: #C8A96A;
            --text-primary: #E2E8F0;
            --text-secondary: #94A3B8;
            --text-muted: #64748B;
            --glass-bg: rgba(255, 255, 255, 0.08);
            --glass-border: rgba(255, 255, 255, 0.12);
            --glass-bg-hover: rgba(255, 255, 255, 0.14);
            --glow-cyan: 0 0 18px rgba(34, 211, 238, 0.35);
            --glow-cyan-hover: 0 0 24px rgba(34, 211, 238, 0.55);
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.35);
            --radius-card: 16px;
            --radius-button: 10px;
            --radius-badge: 6px;
            --spacing-section: 72px;
            --spacing-card: 24px;
            --font-primary: "PingFang SC", "Microsoft YaHei", sans-serif;
            --font-mono: "SF Mono", "Consolas", "Monaco", monospace;
            --container-max: 1200px;
        }
        
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--font-primary);
            background: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            font-size: 16px;
            overflow-x: hidden;
            min-height: 100vh;
            margin: 0;
            padding: 0;
        }
        a {
            color: var(--accent-cyan);
            text-decoration: none;
            transition: color 0.25s ease, border-color 0.25s ease;
        }
        a:hover {
            color: var(--accent-electric);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button, input, select, textarea {
            font-family: var(--font-primary);
            font-size: 16px;
        }
        button:focus-visible, a:focus-visible, input:focus-visible {
            outline: 2px solid var(--accent-electric);
            outline-offset: 2px;
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
        }
        
        /* ========== Header / Navigation ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(10, 22, 40, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            transition: background 0.3s ease, box-shadow 0.3s ease;
        }
        .site-header.scrolled {
            background: rgba(10, 22, 40, 0.97);
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 16px;
        }
        .brand {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .brand-logo {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--accent-electric), var(--accent-cyan));
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 700;
            color: #0A1628;
            letter-spacing: 0;
            box-shadow: var(--glow-cyan);
        }
        .brand-text {
            font-size: 1.35rem;
            font-weight: 700;
            color: #FFFFFF;
            letter-spacing: 0.5px;
            white-space: nowrap;
        }
        .brand-text .brand-highlight {
            color: var(--accent-electric);
        }
        .header-search {
            flex: 1;
            max-width: 320px;
            position: relative;
        }
        .header-search input {
            width: 100%;
            padding: 10px 40px 10px 16px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-button);
            color: var(--text-primary);
            font-size: 14px;
            transition: border-color 0.3s ease, box-shadow 0.3s ease;
        }
        .header-search input::placeholder {
            color: var(--text-muted);
        }
        .header-search input:focus {
            outline: none;
            border-color: var(--accent-cyan);
            box-shadow: 0 0 0 3px rgba(34, 211, 238, 0.1), var(--glow-cyan);
        }
        .header-search .search-icon {
            position: absolute;
            right: 14px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--text-muted);
            font-size: 14px;
            pointer-events: none;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-shrink: 0;
        }
        .version-switch, .lang-switch {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-button);
            color: var(--text-secondary);
            font-size: 13px;
            padding: 8px 14px;
            cursor: pointer;
            white-space: nowrap;
            transition: all 0.3s ease;
        }
        .version-switch:hover, .lang-switch:hover {
            border-color: var(--accent-cyan);
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.1);
        }
        .version-switch .active-version {
            color: var(--accent-electric);
            font-weight: 600;
        }
        .nav-toggle {
            display: none;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-button);
            width: 42px;
            height: 42px;
            color: var(--text-primary);
            font-size: 20px;
            cursor: pointer;
            align-items: center;
            justify-content: center;
            transition: all 0.3s ease;
        }
        .nav-toggle:hover {
            border-color: var(--accent-cyan);
            background: rgba(255, 255, 255, 0.1);
        }
        
        /* ========== Top Nav Bar ========== */
        .top-nav {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            background: rgba(13, 33, 55, 0.85);
        }
        .top-nav-inner {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 4px;
            min-height: 48px;
            padding: 6px 0;
        }
        .top-nav-link {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 8px 16px;
            border-radius: 8px;
            color: var(--text-secondary);
            font-size: 14px;
            font-weight: 500;
            transition: all 0.25s ease;
            white-space: nowrap;
        }
        .top-nav-link i {
            font-size: 13px;
            opacity: 0.8;
        }
        .top-nav-link:hover {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.07);
        }
        .top-nav-link.active {
            color: var(--accent-electric);
            background: rgba(34, 211, 238, 0.1);
            border: 1px solid rgba(34, 211, 238, 0.2);
        }
        
        /* ========== Breadcrumb ========== */
        .breadcrumb-bar {
            padding: 110px 0 12px;
            background: linear-gradient(180deg, rgba(13, 33, 55, 0.6) 0%, transparent 100%);
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-muted);
        }
        .breadcrumb a {
            color: var(--text-secondary);
        }
        .breadcrumb a:hover {
            color: var(--accent-electric);
        }
        .breadcrumb .separator {
            color: var(--text-muted);
            opacity: 0.6;
        }
        .breadcrumb .current {
            color: var(--text-primary);
            font-weight: 500;
        }
        
        /* ========== Category H1 Section ========== */
        .category-header {
            position: relative;
            padding: 40px 0 44px;
            background: linear-gradient(135deg, rgba(13, 33, 55, 0.95) 0%, rgba(10, 22, 40, 0.85) 50%, rgba(19, 43, 69, 0.9) 100%);
            overflow: hidden;
        }
        .category-header::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-image: url('/assets/images/212db076df6ee7b0.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.15;
            z-index: 0;
        }
        .category-header .container {
            position: relative;
            z-index: 1;
        }
        .category-header-content {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 32px;
            flex-wrap: wrap;
        }
        .category-title-wrap {
            max-width: 680px;
        }
        .category-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(34, 211, 238, 0.12);
            border: 1px solid rgba(34, 211, 238, 0.3);
            color: var(--accent-electric);
            font-size: 12px;
            font-weight: 600;
            padding: 5px 12px;
            border-radius: 20px;
            margin-bottom: 14px;
            letter-spacing: 1px;
        }
        .category-title-wrap h1 {
            font-size: 2.1rem;
            font-weight: 700;
            color: #FFFFFF;
            margin: 0 0 10px;
            line-height: 1.25;
            letter-spacing: 0.5px;
        }
        .category-subtitle {
            font-size: 1rem;
            color: var(--text-secondary);
            margin: 0;
            line-height: 1.55;
            max-width: 540px;
        }
        .category-header-meta {
            display: flex;
            gap: 24px;
            flex-shrink: 0;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-card);
            padding: 16px 20px;
            backdrop-filter: blur(12px);
        }
        .meta-item {
            text-align: center;
        }
        .meta-item .meta-num {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--accent-electric);
            font-family: var(--font-mono);
            display: block;
            line-height: 1.2;
        }
        .meta-item .meta-label {
            font-size: 12px;
            color: var(--text-muted);
            margin-top: 4px;
        }
        
        /* ========== Section Common ========== */
        .section {
            padding: var(--spacing-section) 0;
        }
        .section-alt {
            background: rgba(13, 33, 55, 0.45);
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .section-header {
            margin-bottom: 32px;
        }
        .section-header h2 {
            font-size: 1.55rem;
            font-weight: 700;
            color: #FFFFFF;
            margin: 0 0 8px;
            letter-spacing: 0.3px;
        }
        .section-header .section-lead {
            color: var(--text-secondary);
            font-size: 0.95rem;
            margin: 0;
            max-width: 640px;
            line-height: 1.6;
        }
        .section-divider {
            width: 48px;
            height: 3px;
            background: linear-gradient(90deg, var(--accent-electric), var(--accent-cyan));
            border-radius: 3px;
            margin-bottom: 14px;
        }
        
        /* ========== Article List ========== */
        .article-list {
            display: flex;
            flex-direction: column;
            gap: 0;
        }
        .article-list-item {
            display: flex;
            gap: 20px;
            padding: 22px 20px;
            border-left: 3px solid transparent;
            border-bottom: 1px solid rgba(255, 255, 255, 0.07);
            transition: all 0.3s ease;
            background: rgba(255, 255, 255, 0.02);
            border-radius: 0;
            position: relative;
        }
        .article-list-item:first-child {
            border-top: 1px solid rgba(255, 255, 255, 0.07);
            border-top-left-radius: 10px;
            border-top-right-radius: 10px;
            overflow: hidden;
        }
        .article-list-item:last-child {
            border-bottom-left-radius: 10px;
            border-bottom-right-radius: 10px;
            overflow: hidden;
        }
        .article-list-item:hover {
            background: rgba(255, 255, 255, 0.05);
            border-left-color: var(--accent-electric);
        }
        .article-date {
            flex-shrink: 0;
            width: 76px;
            text-align: center;
            background: rgba(255, 255, 255, 0.04);
            border-radius: 8px;
            padding: 10px 6px;
            border: 1px solid rgba(255, 255, 255, 0.08);
            align-self: flex-start;
        }
        .article-date .date-day {
            font-size: 1.3rem;
            font-weight: 700;
            color: #FFFFFF;
            display: block;
            font-family: var(--font-mono);
            line-height: 1.1;
        }
        .article-date .date-month {
            font-size: 12px;
            color: var(--text-muted);
            display: block;
            margin-top: 2px;
        }
        .article-content {
            flex: 1;
            min-width: 0;
        }
        .article-tags {
            display: flex;
            gap: 6px;
            flex-wrap: wrap;
            margin-bottom: 6px;
        }
        .article-tags .tag {
            display: inline-block;
            font-size: 12px;
            padding: 3px 10px;
            border-radius: var(--radius-badge);
            background: rgba(34, 211, 238, 0.1);
            border: 1px solid rgba(34, 211, 238, 0.22);
            color: var(--accent-electric);
            white-space: nowrap;
        }
        .article-tags .tag.gold {
            background: rgba(200, 169, 106, 0.08);
            border-color: rgba(200, 169, 106, 0.3);
            color: var(--accent-gold);
        }
        .article-tags .tag.green {
            background: rgba(52, 211, 153, 0.08);
            border-color: rgba(52, 211, 153, 0.3);
            color: var(--accent-green);
        }
        .article-content h3 {
            font-size: 1.08rem;
            font-weight: 600;
            margin: 0 0 8px;
            line-height: 1.45;
        }
        .article-content h3 a {
            color: var(--text-primary);
            transition: color 0.25s ease;
        }
        .article-content h3 a:hover {
            color: var(--accent-electric);
        }
        .article-excerpt {
            color: var(--text-secondary);
            font-size: 0.92rem;
            line-height: 1.65;
            margin: 0;
        }
        .article-more {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            font-size: 13px;
            color: var(--accent-cyan);
            margin-top: 10px;
            font-weight: 500;
        }
        .article-more:hover {
            color: var(--accent-electric);
        }
        .article-more i {
            font-size: 11px;
        }
        
        /* ========== Two Column Layout ========== */
        .two-col-grid {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 32px;
            align-items: start;
        }
        .main-col {
            min-width: 0;
        }
        .side-col {
            position: sticky;
            top: 130px;
        }
        
        /* ========== Tag Cloud Sidebar ========== */
        .side-card {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.09);
            border-radius: var(--radius-card);
            padding: 24px 20px;
            backdrop-filter: blur(10px);
            margin-bottom: 20px;
        }
        .side-card h3 {
            font-size: 0.95rem;
            font-weight: 600;
            color: #FFFFFF;
            margin: 0 0 14px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .side-card h3 i {
            color: var(--accent-electric);
            font-size: 14px;
        }
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .tag-cloud .cloud-tag {
            display: inline-block;
            font-size: 13px;
            padding: 6px 14px;
            border-radius: 20px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            color: var(--text-secondary);
            cursor: pointer;
            transition: all 0.25s ease;
            white-space: nowrap;
        }
        .tag-cloud .cloud-tag:hover {
            border-color: var(--accent-cyan);
            color: var(--accent-electric);
            background: rgba(34, 211, 238, 0.08);
        }
        .tag-cloud .cloud-tag.hot {
            border-color: rgba(34, 211, 238, 0.4);
            color: var(--accent-electric);
            background: rgba(34, 211, 238, 0.08);
            font-weight: 500;
        }
        
        /* ========== Hot Sidebar List ========== */
        .hot-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .hot-list-item {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            padding: 10px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .hot-list-item:last-child {
            border-bottom: none;
        }
        .hot-rank {
            width: 26px;
            height: 26px;
            border-radius: 6px;
            background: rgba(34, 211, 238, 0.1);
            border: 1px solid rgba(34, 211, 238, 0.2);
            color: var(--accent-electric);
            font-size: 12px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            font-family: var(--font-mono);
        }
        .hot-list-item a {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.45;
            transition: color 0.25s ease;
        }
        .hot-list-item a:hover {
            color: var(--accent-electric);
        }
        
        /* ========== Guide Content ========== */
        .guide-content {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.09);
            border-radius: var(--radius-card);
            padding: 32px 28px;
            backdrop-filter: blur(10px);
        }
        .guide-content p {
            color: var(--text-secondary);
            line-height: 1.8;
            margin: 0 0 18px;
            font-size: 0.98rem;
        }
        .guide-content p:last-child {
            margin-bottom: 0;
        }
        .guide-content .guide-highlight {
            background: rgba(34, 211, 238, 0.06);
            border-left: 3px solid var(--accent-electric);
            padding: 16px 18px;
            border-radius: 0 8px 8px 0;
            margin: 20px 0;
            color: var(--text-primary);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .guide-content .guide-subheading {
            font-size: 1.1rem;
            font-weight: 600;
            color: #FFFFFF;
            margin: 24px 0 12px;
        }
        
        /* ========== Featured Articles ========== */
        .featured-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .featured-card {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.09);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: all 0.35s ease;
            box-shadow: var(--shadow-card);
        }
        .featured-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.45), var(--glow-cyan);
            border-color: rgba(34, 211, 238, 0.25);
        }
        .featured-card-img {
            height: 180px;
            overflow: hidden;
            position: relative;
        }
        .featured-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .featured-card:hover .featured-card-img img {
            transform: scale(1.05);
        }
        .featured-card-img::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(180deg, transparent 40%, rgba(10, 22, 40, 0.7) 100%);
            pointer-events: none;
        }
        .featured-card-body {
            padding: 18px 20px 20px;
        }
        .featured-card-body h3 {
            font-size: 1rem;
            font-weight: 600;
            margin: 0 0 8px;
            line-height: 1.45;
        }
        .featured-card-body h3 a {
            color: #FFFFFF;
            transition: color 0.25s ease;
        }
        .featured-card-body h3 a:hover {
            color: var(--accent-electric);
        }
        .featured-card-body p {
            color: var(--text-secondary);
            font-size: 0.87rem;
            line-height: 1.6;
            margin: 0;
        }
        
        /* ========== Stats Bar ========== */
        .stats-bar {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.09);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            backdrop-filter: blur(10px);
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }
        .stat-item {
            text-align: center;
            padding: 12px 8px;
            border-radius: 10px;
            transition: background 0.3s ease;
        }
        .stat-item:hover {
            background: rgba(255, 255, 255, 0.04);
        }
        .stat-num {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--accent-electric);
            font-family: var(--font-mono);
            display: block;
            line-height: 1.1;
        }
        .stat-label {
            font-size: 13px;
            color: var(--text-muted);
            margin-top: 6px;
            display: block;
        }
        
        /* ========== FAQ ========== */
        .faq-list {
            max-width: 760px;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .faq-item {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.09);
            border-radius: 12px;
            overflow: hidden;
            transition: all 0.3s ease;
        }
        .faq-item:hover {
            border-color: rgba(34, 211, 238, 0.2);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 16px 20px;
            cursor: pointer;
            gap: 16px;
            font-weight: 500;
            color: var(--text-primary);
            font-size: 0.98rem;
            line-height: 1.5;
            transition: background 0.3s ease;
            user-select: none;
        }
        .faq-question:hover {
            background: rgba(255, 255, 255, 0.04);
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(34, 211, 238, 0.1);
            border: 1px solid rgba(34, 211, 238, 0.2);
            color: var(--accent-electric);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            transition: transform 0.3s ease;
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            background: rgba(34, 211, 238, 0.2);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 20px;
            background: rgba(255, 255, 255, 0.02);
        }
        .faq-item.open .faq-answer {
            max-height: 280px;
            padding: 0 20px 18px;
        }
        .faq-answer p {
            color: var(--text-secondary);
            font-size: 0.92rem;
            line-height: 1.7;
            margin: 0;
        }
        
        /* ========== View More CTA ========== */
        .view-more-bar {
            text-align: center;
            padding: 12px 0;
        }
        .btn-view-more {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 32px;
            border-radius: var(--radius-button);
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            color: var(--text-primary);
            font-size: 15px;
            font-weight: 500;
            cursor: pointer;
            transition: all 0.3s ease;
        }
        .btn-view-more:hover {
            border-color: var(--accent-cyan);
            background: rgba(34, 211, 238, 0.1);
            color: var(--accent-electric);
            box-shadow: var(--glow-cyan);
        }
        .btn-view-more i {
            font-size: 14px;
        }
        
        /* ========== Footer ========== */
        .site-footer {
            background: #060E1A;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 48px 0 28px;
            margin-top: 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-brand h3 {
            font-size: 1.25rem;
            font-weight: 700;
            color: #FFFFFF;
            margin: 0 0 10px;
        }
        .footer-brand p {
            color: var(--text-secondary);
            font-size: 0.9rem;
            line-height: 1.65;
            margin: 0;
            max-width: 300px;
        }
        .footer-col h4 {
            font-size: 0.92rem;
            font-weight: 600;
            color: #FFFFFF;
            margin: 0 0 12px;
            letter-spacing: 0.5px;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-col ul li a {
            color: var(--text-secondary);
            font-size: 0.88rem;
            transition: color 0.25s ease;
        }
        .footer-col ul li a:hover {
            color: var(--accent-electric);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.07);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
            justify-content: space-between;
            font-size: 12px;
            color: var(--text-muted);
        }
        .footer-bottom span {
            white-space: nowrap;
        }
        .footer-bottom a {
            color: var(--text-muted);
        }
        .footer-bottom a:hover {
            color: var(--accent-electric);
        }
        
        /* ========== Responsive ========== */
        @media (max-width: 1024px) {
            :root {
                --spacing-section: 56px;
            }
            .category-title-wrap h1 {
                font-size: 1.8rem;
            }
            .featured-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-bar {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            :root {
                --spacing-section: 44px;
            }
            .header-inner {
                height: 60px;
                gap: 10px;
            }
            .header-search {
                display: none;
            }
            .version-switch {
                display: none;
            }
            .nav-toggle {
                display: flex;
            }
            .top-nav-inner {
                display: none;
                flex-direction: column;
                align-items: stretch;
                gap: 0;
                padding: 8px 0;
            }
            .top-nav-inner.open {
                display: flex;
            }
            .top-nav-link {
                padding: 10px 14px;
                border-radius: 6px;
                font-size: 15px;
            }
            .breadcrumb-bar {
                padding: 84px 0 8px;
            }
            .category-header {
                padding: 28px 0 32px;
            }
            .category-header-content {
                flex-direction: column;
                gap: 16px;
            }
            .category-title-wrap h1 {
                font-size: 1.55rem;
            }
            .category-header-meta {
                gap: 16px;
                padding: 12px 16px;
                flex-wrap: wrap;
            }
            .meta-item .meta-num {
                font-size: 1.15rem;
            }
            .two-col-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .side-col {
                position: static;
                order: 2;
            }
            .main-col {
                order: 1;
            }
            .article-list-item {
                flex-direction: column;
                gap: 12px;
                padding: 18px 16px;
            }
            .article-date {
                width: auto;
                display: flex;
                flex-direction: row;
                align-items: baseline;
                gap: 8px;
                align-self: auto;
                padding: 6px 12px;
                justify-content: center;
            }
            .article-date .date-day {
                font-size: 1.1rem;
            }
            .article-date .date-month {
                font-size: 11px;
                margin-top: 0;
            }
            .featured-grid {
                grid-template-columns: 1fr;
            }
            .stats-bar {
                grid-template-columns: repeat(2, 1fr);
                padding: 20px 16px;
                gap: 8px;
            }
            .stat-num {
                font-size: 1.4rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
            .footer-bottom span {
                white-space: normal;
            }
            .guide-content {
                padding: 22px 18px;
            }
            .faq-question {
                padding: 14px 16px;
                font-size: 0.92rem;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 14px;
            }
            .brand-text {
                font-size: 1.1rem;
            }
            .brand-logo {
                width: 34px;
                height: 34px;
                font-size: 16px;
                border-radius: 8px;
            }
            .lang-switch {
                font-size: 12px;
                padding: 6px 10px;
            }
            .category-title-wrap h1 {
                font-size: 1.35rem;
            }
            .category-subtitle {
                font-size: 0.9rem;
            }
            .section-header h2 {
                font-size: 1.3rem;
            }
            .stats-bar {
                grid-template-columns: repeat(2, 1fr);
            }
            .stat-num {
                font-size: 1.25rem;
            }
            .stat-label {
                font-size: 11px;
            }
            .featured-card-img {
                height: 150px;
            }
            .article-excerpt {
                font-size: 0.87rem;
            }
            .btn-view-more {
                width: 100%;
                justify-content: center;
                padding: 13px 20px;
                font-size: 14px;
            }
        }

/* roulang page: category4 */
:root {
            --bg-primary: #0A1628;
            --bg-secondary: #0D2137;
            --bg-tertiary: #132B45;
            --accent-cyan: #38BDF8;
            --accent-electric: #22D3EE;
            --accent-green: #34D399;
            --accent-gold: #C8A96A;
            --text-primary: #E2E8F0;
            --text-secondary: #94A3B8;
            --text-muted: #64748B;
            --glass-bg: rgba(255, 255, 255, 0.08);
            --glass-border: rgba(255, 255, 255, 0.12);
            --glass-bg-hover: rgba(255, 255, 255, 0.14);
            --glow-cyan: 0 0 18px rgba(34, 211, 238, 0.35);
            --glow-cyan-hover: 0 0 24px rgba(34, 211, 238, 0.55);
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.35);
            --radius-card: 16px;
            --radius-button: 10px;
            --radius-badge: 6px;
            --spacing-section: 72px;
            --spacing-card: 24px;
            --font-primary: "PingFang SC", "Microsoft YaHei", sans-serif;
            --font-mono: "SF Mono", "Consolas", "Monaco", monospace;
            --container-max: 1200px;
        }

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

        body {
            font-family: var(--font-primary);
            background: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            font-size: 16px;
            overflow-x: hidden;
            min-height: 100vh;
            padding-top: 112px;
        }

        a {
            color: var(--accent-cyan);
            text-decoration: none;
            transition: color 0.25s ease, border-color 0.25s ease;
        }

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

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

        button,
        input,
        select,
        textarea {
            font-family: var(--font-primary);
            font-size: 16px;
        }

        button:focus-visible,
        a:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--accent-electric);
            outline-offset: 2px;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
        }

        /* ========== Header / Navigation ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(10, 22, 40, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            transition: background 0.3s ease, box-shadow 0.3s ease;
        }

        .site-header.scrolled {
            background: rgba(10, 22, 40, 0.97);
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 20px;
        }

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

        .brand-logo {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--accent-electric), var(--accent-cyan));
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 700;
            color: #0A1628;
            letter-spacing: 0;
            box-shadow: var(--glow-cyan);
        }

        .brand-text {
            font-size: 1.35rem;
            font-weight: 700;
            color: #FFFFFF;
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

        .brand-text .brand-highlight {
            color: var(--accent-electric);
        }

        .header-search {
            flex: 1;
            max-width: 360px;
            position: relative;
        }

        .header-search input {
            width: 100%;
            padding: 10px 40px 10px 16px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-button);
            color: var(--text-primary);
            font-size: 14px;
            transition: border-color 0.3s ease, box-shadow 0.3s ease;
        }

        .header-search input::placeholder {
            color: var(--text-muted);
        }

        .header-search input:focus {
            outline: none;
            border-color: var(--accent-cyan);
            box-shadow: 0 0 0 3px rgba(34, 211, 238, 0.1), var(--glow-cyan);
        }

        .header-search .search-icon {
            position: absolute;
            right: 14px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--text-muted);
            font-size: 14px;
            pointer-events: none;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-shrink: 0;
        }

        .version-switch,
        .lang-switch {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-button);
            color: var(--text-secondary);
            font-size: 13px;
            padding: 8px 14px;
            cursor: pointer;
            transition: all 0.3s ease;
            white-space: nowrap;
        }

        .version-switch:hover,
        .lang-switch:hover {
            border-color: var(--accent-cyan);
            background: rgba(255, 255, 255, 0.1);
            color: var(--text-primary);
        }

        .version-switch .active-version {
            color: var(--accent-electric);
            font-weight: 600;
        }

        .nav-toggle {
            display: none;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-button);
            width: 42px;
            height: 42px;
            color: var(--text-primary);
            font-size: 20px;
            cursor: pointer;
            align-items: center;
            justify-content: center;
            transition: all 0.3s ease;
        }

        .nav-toggle:hover {
            border-color: var(--accent-cyan);
            background: rgba(255, 255, 255, 0.1);
        }

        /* ========== Top Nav Bar ========== */
        .top-nav {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            background: rgba(13, 33, 55, 0.85);
        }

        .top-nav-inner {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 4px;
            height: 44px;
            flex-wrap: wrap;
            padding: 0 10px;
        }

        .top-nav-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: var(--radius-button);
            transition: all 0.25s ease;
            white-space: nowrap;
        }

        .top-nav-link i {
            font-size: 13px;
            color: var(--text-muted);
            transition: color 0.25s ease;
        }

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

        .top-nav-link:hover i {
            color: var(--accent-cyan);
        }

        .top-nav-link.active {
            color: var(--accent-electric);
            background: rgba(34, 211, 238, 0.1);
            border: 1px solid rgba(34, 211, 238, 0.25);
        }

        .top-nav-link.active i {
            color: var(--accent-electric);
        }

        /* ========== Breadcrumb ========== */
        .breadcrumb-bar {
            background: rgba(13, 33, 55, 0.6);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            padding: 12px 0;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-muted);
            list-style: none;
            margin: 0;
            padding: 0;
            flex-wrap: wrap;
        }

        .breadcrumb li {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .breadcrumb li:not(:last-child)::after {
            content: "/";
            color: var(--text-muted);
            font-size: 12px;
        }

        .breadcrumb a {
            color: var(--text-secondary);
            transition: color 0.25s ease;
        }

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

        .breadcrumb .current {
            color: var(--accent-cyan);
            font-weight: 500;
        }

        /* ========== Category H1 Section ========== */
        .category-hero {
            background: linear-gradient(135deg, #0A1628 0%, #0D2137 50%, #132B45 100%);
            padding: 40px 0 32px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            position: relative;
            overflow: hidden;
        }

        .category-hero::before {
            content: "";
            position: absolute;
            top: -60px;
            right: -40px;
            width: 280px;
            height: 280px;
            background: radial-gradient(circle, rgba(34, 211, 238, 0.18), transparent 70%);
            pointer-events: none;
        }

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

        .category-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            color: var(--accent-electric);
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 12px;
        }

        .category-label i {
            font-size: 14px;
        }

        .category-hero h1 {
            font-size: 32px;
            font-weight: 700;
            color: #FFFFFF;
            margin: 0 0 12px 0;
            letter-spacing: 0.5px;
            line-height: 1.3;
        }

        .category-hero .lead {
            font-size: 16px;
            color: var(--text-secondary);
            margin: 0;
            max-width: 720px;
            line-height: 1.7;
        }

        /* ========== Rule List Section ========== */
        .rule-list-section {
            padding: 48px 0;
            background: var(--bg-primary);
        }

        .section-heading {
            margin-bottom: 32px;
        }

        .section-heading h2 {
            font-size: 24px;
            font-weight: 700;
            color: #FFFFFF;
            margin: 0 0 8px 0;
            letter-spacing: 0.3px;
        }

        .section-heading p {
            font-size: 15px;
            color: var(--text-secondary);
            margin: 0;
        }

        .rule-list {
            display: flex;
            flex-direction: column;
            gap: 0;
        }

        .rule-item {
            display: flex;
            align-items: flex-start;
            gap: 20px;
            padding: 22px 20px;
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(255, 255, 255, 0.06);
            border-left: 3px solid transparent;
            border-radius: 0;
            transition: all 0.3s ease;
            margin-bottom: 8px;
            position: relative;
        }

        .rule-item:hover {
            border-left-color: var(--accent-cyan);
            background: rgba(255, 255, 255, 0.06);
            border-top-color: rgba(255, 255, 255, 0.12);
            border-right-color: rgba(255, 255, 255, 0.12);
            border-bottom-color: rgba(255, 255, 255, 0.12);
            transform: translateX(4px);
        }

        .rule-number {
            flex-shrink: 0;
            width: 40px;
            height: 40px;
            background: rgba(34, 211, 238, 0.12);
            border: 1px solid rgba(34, 211, 238, 0.25);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 15px;
            font-weight: 700;
            color: var(--accent-electric);
            font-family: var(--font-mono);
        }

        .rule-content {
            flex: 1;
            min-width: 0;
        }

        .rule-meta {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 6px;
            flex-wrap: wrap;
        }

        .rule-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 500;
            padding: 3px 10px;
            border-radius: var(--radius-badge);
            background: rgba(56, 189, 248, 0.12);
            border: 1px solid rgba(56, 189, 248, 0.25);
            color: var(--accent-cyan);
        }

        .rule-tag.gold {
            background: rgba(200, 169, 106, 0.12);
            border-color: rgba(200, 169, 106, 0.3);
            color: var(--accent-gold);
        }

        .rule-tag.green {
            background: rgba(52, 211, 153, 0.12);
            border-color: rgba(52, 211, 153, 0.3);
            color: var(--accent-green);
        }

        .rule-date {
            font-size: 12px;
            color: var(--text-muted);
        }

        .rule-content h3 {
            font-size: 17px;
            font-weight: 600;
            color: #FFFFFF;
            margin: 0 0 8px 0;
            line-height: 1.4;
        }

        .rule-content p {
            font-size: 14px;
            color: var(--text-secondary);
            margin: 0;
            line-height: 1.7;
        }

        /* ========== Rule Guide Body Section ========== */
        .rule-guide-body {
            padding: 56px 0;
            background: var(--bg-secondary);
        }

        .guide-article {
            max-width: 800px;
        }

        .guide-article h2 {
            font-size: 22px;
            font-weight: 700;
            color: #FFFFFF;
            margin: 0 0 16px 0;
            letter-spacing: 0.3px;
        }

        .guide-article h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--accent-cyan);
            margin: 28px 0 12px 0;
        }

        .guide-article p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.85;
            margin: 0 0 16px 0;
        }

        .guide-article .callout-box {
            background: rgba(34, 211, 238, 0.06);
            border-left: 3px solid var(--accent-cyan);
            padding: 18px 22px;
            border-radius: 0 var(--radius-card) var(--radius-card) 0;
            margin: 20px 0;
        }

        .guide-article .callout-box p {
            margin: 0;
            color: var(--text-primary);
            font-size: 14px;
        }

        .guide-article ul {
            list-style: none;
            padding: 0;
            margin: 16px 0;
        }

        .guide-article ul li {
            padding: 10px 0 10px 28px;
            position: relative;
            font-size: 15px;
            color: var(--text-secondary);
            border-bottom: 1px dashed rgba(255, 255, 255, 0.06);
        }

        .guide-article ul li::before {
            content: "\f058";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            position: absolute;
            left: 0;
            top: 10px;
            color: var(--accent-green);
            font-size: 14px;
        }

        /* ========== Tags Sidebar ========== */
        .rule-aside {
            background: var(--bg-tertiary);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-card);
            padding: 24px;
            position: sticky;
            top: 130px;
        }

        .rule-aside h3 {
            font-size: 18px;
            font-weight: 600;
            color: #FFFFFF;
            margin: 0 0 16px 0;
        }

        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 24px;
        }

        .tag-cloud a {
            display: inline-block;
            font-size: 13px;
            padding: 6px 14px;
            border-radius: 20px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            color: var(--text-secondary);
            transition: all 0.3s ease;
        }

        .tag-cloud a:hover {
            border-color: var(--accent-cyan);
            color: var(--accent-electric);
            background: rgba(34, 211, 238, 0.08);
        }

        .hot-rules-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .hot-rules-list li {
            padding: 12px 0;
            border-bottom: 1px dashed rgba(255, 255, 255, 0.08);
            font-size: 14px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .hot-rules-list li:last-child {
            border-bottom: none;
        }

        .hot-rules-list li i {
            color: var(--accent-gold);
            font-size: 12px;
        }

        .hot-rules-list li a {
            color: var(--text-secondary);
            transition: color 0.25s ease;
        }

        .hot-rules-list li a:hover {
            color: var(--accent-electric);
        }

        /* ========== Featured Rules Section ========== */
        .featured-rules {
            padding: 56px 0;
            background: var(--bg-primary);
        }

        .featured-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
        }

        .featured-card {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
        }

        .featured-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 16px 40px rgba(0, 0, 0, 0.45);
            border-color: rgba(34, 211, 238, 0.3);
        }

        .featured-card .card-image {
            aspect-ratio: 16/9;
            overflow: hidden;
            position: relative;
        }

        .featured-card .card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .featured-card:hover .card-image img {
            transform: scale(1.04);
        }

        .featured-card .card-body {
            padding: 20px 22px;
        }

        .featured-card .card-body h3 {
            font-size: 17px;
            font-weight: 600;
            color: #FFFFFF;
            margin: 0 0 10px 0;
            line-height: 1.4;
        }

        .featured-card .card-body p {
            font-size: 14px;
            color: var(--text-secondary);
            margin: 0;
            line-height: 1.7;
        }

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

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

        .faq-item {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-card);
            margin-bottom: 12px;
            overflow: hidden;
            transition: all 0.3s ease;
        }

        .faq-item:hover {
            border-color: rgba(255, 255, 255, 0.16);
            background: rgba(255, 255, 255, 0.06);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 22px;
            background: none;
            border: none;
            color: #FFFFFF;
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            text-align: left;
            transition: all 0.3s ease;
        }

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

        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(34, 211, 238, 0.12);
            border: 1px solid rgba(34, 211, 238, 0.25);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            color: var(--accent-electric);
            transition: all 0.3s ease;
        }

        .faq-item.open .faq-icon {
            transform: rotate(180deg);
            background: rgba(34, 211, 238, 0.25);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 22px;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 22px 18px 22px;
        }

        .faq-answer p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
            margin: 0;
        }

        /* ========== Bottom CTA ========== */
        .bottom-cta {
            padding: 40px 0 56px;
            background: var(--bg-primary);
        }

        .cta-bar {
            background: linear-gradient(135deg, rgba(34, 211, 238, 0.1), rgba(56, 189, 248, 0.06));
            border: 1px solid rgba(34, 211, 238, 0.2);
            border-radius: var(--radius-card);
            padding: 32px 36px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
        }

        .cta-bar .cta-text h3 {
            font-size: 19px;
            font-weight: 700;
            color: #FFFFFF;
            margin: 0 0 8px 0;
        }

        .cta-bar .cta-text p {
            font-size: 14px;
            color: var(--text-secondary);
            margin: 0;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-electric));
            border: none;
            border-radius: var(--radius-button);
            color: #0A1628;
            font-size: 15px;
            font-weight: 700;
            cursor: pointer;
            box-shadow: var(--glow-cyan);
            transition: all 0.3s ease;
            white-space: nowrap;
        }

        .btn-primary:hover {
            box-shadow: var(--glow-cyan-hover);
            transform: translateY(-2px);
            color: #0A1628;
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: var(--radius-button);
            color: var(--text-primary);
            font-size: 15px;
            font-weight: 500;
            cursor: pointer;
            transition: all 0.3s ease;
            white-space: nowrap;
        }

        .btn-secondary:hover {
            border-color: var(--accent-cyan);
            background: rgba(255, 255, 255, 0.1);
            color: #FFFFFF;
        }

        /* ========== Footer ========== */
        .site-footer {
            background: #081120;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 56px 0 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 32px;
            padding-bottom: 40px;
        }

        .footer-brand h3 {
            font-size: 20px;
            font-weight: 700;
            color: #FFFFFF;
            margin: 0 0 12px 0;
        }

        .footer-brand p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin: 0;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #FFFFFF;
            margin: 0 0 14px 0;
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-col ul li {
            margin-bottom: 8px;
        }

        .footer-col ul li a {
            font-size: 14px;
            color: var(--text-secondary);
            transition: color 0.25s ease;
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 18px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 10px;
            font-size: 13px;
            color: var(--text-muted);
        }

        .footer-bottom a {
            color: var(--text-muted);
            transition: color 0.25s ease;
        }

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

        /* ========== Responsive ========== */
        @media (max-width: 1024px) {
            .header-search {
                max-width: 260px;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }

        @media (max-width: 768px) {
            body {
                padding-top: 100px;
            }

            .header-inner {
                height: 58px;
                gap: 12px;
            }

            .header-search {
                display: none;
            }

            .version-switch,
            .lang-switch {
                display: none;
            }

            .nav-toggle {
                display: flex;
            }

            .top-nav-inner {
                height: auto;
                max-height: 0;
                overflow: hidden;
                flex-direction: column;
                align-items: flex-start;
                gap: 0;
                padding: 0 16px;
                transition: max-height 0.35s ease, padding 0.35s ease;
            }

            .top-nav-inner.nav-open {
                max-height: 320px;
                padding: 12px 16px;
            }

            .top-nav-link {
                width: 100%;
                padding: 10px 12px;
                border-radius: 8px;
            }

            .category-hero {
                padding: 28px 0 24px;
            }

            .category-hero h1 {
                font-size: 24px;
            }

            .rule-list-section,
            .rule-guide-body,
            .featured-rules,
            .faq-section {
                padding: 36px 0;
            }

            .rule-item {
                padding: 18px 14px;
                gap: 14px;
                flex-direction: column;
            }

            .rule-number {
                width: 32px;
                height: 32px;
                font-size: 13px;
            }

            .rule-aside {
                position: static;
                margin-top: 28px;
            }

            .cta-bar {
                padding: 24px;
                flex-direction: column;
                align-items: flex-start;
            }

            .btn-primary,
            .btn-secondary {
                width: 100%;
                justify-content: center;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 6px;
            }
        }

        @media (max-width: 520px) {
            .brand-text {
                font-size: 1.1rem;
            }

            .brand-logo {
                width: 34px;
                height: 34px;
                font-size: 16px;
            }

            .section-heading h2 {
                font-size: 20px;
            }

            .featured-grid {
                grid-template-columns: 1fr;
            }

            .category-hero h1 {
                font-size: 21px;
            }

            .guide-article h2 {
                font-size: 19px;
            }

            .guide-article p {
                font-size: 14px;
            }
        }

/* roulang page: category5 */
:root {
            --bg-primary: #0A1628;
            --bg-secondary: #0D2137;
            --bg-tertiary: #132B45;
            --accent-cyan: #38BDF8;
            --accent-electric: #22D3EE;
            --accent-green: #34D399;
            --accent-gold: #C8A96A;
            --text-primary: #E2E8F0;
            --text-secondary: #94A3B8;
            --text-muted: #64748B;
            --glass-bg: rgba(255, 255, 255, 0.08);
            --glass-border: rgba(255, 255, 255, 0.12);
            --glass-bg-hover: rgba(255, 255, 255, 0.14);
            --glow-cyan: 0 0 18px rgba(34, 211, 238, 0.35);
            --glow-cyan-hover: 0 0 24px rgba(34, 211, 238, 0.55);
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.35);
            --radius-card: 16px;
            --radius-button: 10px;
            --radius-badge: 6px;
            --spacing-section: 72px;
            --spacing-card: 24px;
            --font-primary: "PingFang SC", "Microsoft YaHei", sans-serif;
            --font-mono: "SF Mono", "Consolas", "Monaco", monospace;
            --container-max: 1200px;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--font-primary);
            background: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            font-size: 16px;
            overflow-x: hidden;
            min-height: 100vh;
        }
        a {
            color: var(--accent-cyan);
            text-decoration: none;
            transition: color 0.25s ease, border-color 0.25s ease;
        }
        a:hover {
            color: var(--accent-electric);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button, input, select, textarea {
            font-family: var(--font-primary);
            font-size: 16px;
        }
        button:focus-visible, a:focus-visible, input:focus-visible {
            outline: 2px solid var(--accent-electric);
            outline-offset: 2px;
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
        }
        /* ========== Header / Navigation ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(10, 22, 40, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            transition: background 0.3s ease, box-shadow 0.3s ease;
        }
        .site-header.scrolled {
            background: rgba(10, 22, 40, 0.97);
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 20px;
        }
        .brand {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .brand-logo {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--accent-electric), var(--accent-cyan));
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 700;
            color: #0A1628;
            letter-spacing: 0;
            box-shadow: var(--glow-cyan);
        }
        .brand-text {
            font-size: 1.35rem;
            font-weight: 700;
            color: #FFFFFF;
            letter-spacing: 0.5px;
            white-space: nowrap;
        }
        .brand-text .brand-highlight {
            color: var(--accent-electric);
        }
        .header-search {
            flex: 1;
            max-width: 360px;
            position: relative;
        }
        .header-search input {
            width: 100%;
            padding: 10px 40px 10px 16px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-button);
            color: var(--text-primary);
            font-size: 14px;
            transition: border-color 0.3s ease, box-shadow 0.3s ease;
        }
        .header-search input::placeholder {
            color: var(--text-muted);
        }
        .header-search input:focus {
            outline: none;
            border-color: var(--accent-cyan);
            box-shadow: 0 0 0 3px rgba(34, 211, 238, 0.1), var(--glow-cyan);
        }
        .header-search .search-icon {
            position: absolute;
            right: 14px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--text-muted);
            font-size: 14px;
            pointer-events: none;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-shrink: 0;
        }
        .version-switch, .lang-switch {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-button);
            color: var(--text-secondary);
            font-size: 13px;
            padding: 8px 12px;
            cursor: pointer;
            transition: all 0.3s ease;
            white-space: nowrap;
        }
        .version-switch:hover, .lang-switch:hover {
            border-color: var(--accent-cyan);
            background: rgba(255, 255, 255, 0.1);
            color: var(--text-primary);
        }
        .version-switch .active-version {
            color: var(--accent-electric);
            font-weight: 600;
        }
        .nav-toggle {
            display: none;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-button);
            width: 42px;
            height: 42px;
            color: var(--text-primary);
            font-size: 20px;
            cursor: pointer;
            align-items: center;
            justify-content: center;
            transition: all 0.3s ease;
        }
        .nav-toggle:hover {
            border-color: var(--accent-cyan);
            background: rgba(255, 255, 255, 0.1);
        }
        .top-nav {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            background: rgba(13, 33, 55, 0.85);
        }
        .top-nav-inner {
            display: flex;
            align-items: center;
            gap: 4px;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: thin;
            scrollbar-color: rgba(255, 255, 255, 0.15) transparent;
        }
        .top-nav-inner::-webkit-scrollbar {
            height: 4px;
        }
        .top-nav-inner::-webkit-scrollbar-track {
            background: transparent;
        }
        .top-nav-inner::-webkit-scrollbar-thumb {
            background: rgba(255, 255, 255, 0.15);
            border-radius: 4px;
        }
        .top-nav-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 16px;
            color: var(--text-secondary);
            font-size: 14px;
            white-space: nowrap;
            border-bottom: 2px solid transparent;
            transition: all 0.25s ease;
        }
        .top-nav-link:hover {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.04);
        }
        .top-nav-link.active {
            color: var(--accent-electric);
            border-bottom-color: var(--accent-electric);
            background: rgba(34, 211, 238, 0.06);
        }
        /* ========== Breadcrumb ========== */
        .breadcrumb-section {
            padding-top: 138px;
            padding-bottom: 16px;
            background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
        }
        .breadcrumb-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-muted);
            flex-wrap: wrap;
        }
        .breadcrumb-nav a {
            color: var(--text-secondary);
            transition: color 0.25s ease;
        }
        .breadcrumb-nav a:hover {
            color: var(--accent-electric);
        }
        .breadcrumb-nav .separator {
            color: var(--text-muted);
            font-size: 11px;
        }
        .breadcrumb-nav .current {
            color: var(--accent-electric);
            font-weight: 500;
        }
        /* ========== Category H1 Section ========== */
        .category-hero {
            padding: 28px 0 40px;
            background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
        }
        .category-hero-inner {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .category-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(34, 211, 238, 0.12);
            border: 1px solid rgba(34, 211, 238, 0.25);
            border-radius: var(--radius-badge);
            padding: 4px 12px;
            font-size: 12px;
            color: var(--accent-electric);
            letter-spacing: 0.5px;
            width: fit-content;
        }
        .category-hero h1 {
            font-size: 2rem;
            font-weight: 700;
            color: #FFFFFF;
            margin: 0;
            line-height: 1.3;
            letter-spacing: 0.5px;
        }
        .category-hero .lead {
            font-size: 1.05rem;
            color: var(--text-secondary);
            margin: 0;
            max-width: 720px;
        }
        /* ========== Resource List Section ========== */
        .resource-list-section {
            padding: 56px 0 72px;
            background: var(--bg-primary);
        }
        .resource-list-section h2 {
            font-size: 1.5rem;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 28px;
            letter-spacing: 0.5px;
        }
        .resource-list {
            display: flex;
            flex-direction: column;
            gap: 0;
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            overflow: hidden;
            background: rgba(255, 255, 255, 0.03);
        }
        .resource-item {
            display: flex;
            align-items: flex-start;
            gap: 20px;
            padding: 22px 24px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            transition: background 0.3s ease, border-left-color 0.3s ease;
            border-left: 3px solid transparent;
            position: relative;
        }
        .resource-item:last-child {
            border-bottom: none;
        }
        .resource-item:hover {
            background: rgba(255, 255, 255, 0.05);
            border-left-color: var(--accent-electric);
        }
        .resource-icon {
            flex-shrink: 0;
            width: 46px;
            height: 46px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            background: rgba(34, 211, 238, 0.1);
            border: 1px solid rgba(34, 211, 238, 0.2);
            color: var(--accent-electric);
        }
        .resource-content {
            flex: 1;
            min-width: 0;
        }
        .resource-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
            margin-bottom: 6px;
        }
        .resource-date {
            font-size: 12px;
            color: var(--text-muted);
            font-family: var(--font-mono);
        }
        .resource-tags {
            display: flex;
            gap: 6px;
            flex-wrap: wrap;
        }
        .resource-tag {
            font-size: 11px;
            color: var(--accent-green);
            background: rgba(52, 211, 153, 0.1);
            border: 1px solid rgba(52, 211, 153, 0.2);
            border-radius: var(--radius-badge);
            padding: 2px 8px;
        }
        .resource-item h3 {
            font-size: 1.05rem;
            font-weight: 600;
            color: #FFFFFF;
            margin: 0 0 6px;
            line-height: 1.4;
        }
        .resource-summary {
            font-size: 14px;
            color: var(--text-secondary);
            margin: 0;
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .resource-download {
            flex-shrink: 0;
            align-self: center;
            background: rgba(34, 211, 238, 0.1);
            border: 1px solid rgba(34, 211, 238, 0.3);
            border-radius: var(--radius-button);
            color: var(--accent-electric);
            font-size: 13px;
            padding: 10px 18px;
            cursor: pointer;
            transition: all 0.3s ease;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
        }
        .resource-download:hover {
            background: rgba(34, 211, 238, 0.2);
            border-color: var(--accent-electric);
            box-shadow: var(--glow-cyan);
            color: #FFFFFF;
        }
        /* ========== Content Guide Section ========== */
        .content-guide {
            padding: 64px 0;
            background: var(--bg-secondary);
        }
        .content-guide-inner {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: start;
        }
        .content-guide h2 {
            font-size: 1.5rem;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 20px;
            letter-spacing: 0.5px;
        }
        .content-guide-text {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
        }
        .content-guide-text p {
            margin-bottom: 16px;
        }
        .content-guide-text h3 {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--accent-cyan);
            margin: 20px 0 12px;
        }
        .content-guide-text ul {
            list-style: none;
            padding: 0;
            margin: 0 0 16px;
        }
        .content-guide-text ul li {
            position: relative;
            padding-left: 20px;
            margin-bottom: 8px;
            font-size: 14px;
            color: var(--text-secondary);
        }
        .content-guide-text ul li::before {
            content: '';
            position: absolute;
            left: 0;
            top: 8px;
            width: 6px;
            height: 6px;
            background: var(--accent-electric);
            border-radius: 50%;
        }
        /* ========== Tag Cloud Sidebar ========== */
        .tag-cloud-panel {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            padding: 24px;
            box-shadow: var(--shadow-card);
        }
        .tag-cloud-panel h3 {
            font-size: 1.05rem;
            font-weight: 600;
            color: #FFFFFF;
            margin-bottom: 16px;
        }
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .tag-cloud a {
            display: inline-block;
            padding: 6px 14px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-badge);
            font-size: 12px;
            color: var(--text-secondary);
            transition: all 0.25s ease;
        }
        .tag-cloud a:hover {
            background: rgba(34, 211, 238, 0.12);
            border-color: var(--accent-electric);
            color: var(--accent-electric);
        }
        .tag-cloud .hot-tag {
            background: rgba(200, 169, 106, 0.12);
            border-color: rgba(200, 169, 106, 0.3);
            color: var(--accent-gold);
        }
        /* ========== Featured Resources ========== */
        .featured-resources {
            padding: 64px 0;
            background: var(--bg-primary);
        }
        .featured-resources h2 {
            font-size: 1.5rem;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 28px;
            letter-spacing: 0.5px;
        }
        .featured-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .featured-card {
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all 0.35s ease;
        }
        .featured-card:hover {
            background: var(--glass-bg-hover);
            border-color: rgba(34, 211, 238, 0.3);
            transform: translateY(-4px);
            box-shadow: 0 14px 40px rgba(0, 0, 0, 0.45), var(--glow-cyan);
        }
        .featured-card-img {
            position: relative;
            height: 180px;
            overflow: hidden;
        }
        .featured-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .featured-card:hover .featured-card-img img {
            transform: scale(1.05);
        }
        .featured-card-img::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 50%, rgba(10, 22, 40, 0.7) 100%);
        }
        .featured-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            z-index: 2;
            background: rgba(10, 22, 40, 0.85);
            border: 1px solid rgba(34, 211, 238, 0.4);
            border-radius: var(--radius-badge);
            padding: 4px 10px;
            font-size: 11px;
            color: var(--accent-electric);
            backdrop-filter: blur(8px);
        }
        .featured-card-body {
            padding: 20px;
        }
        .featured-card-body h3 {
            font-size: 1.05rem;
            font-weight: 600;
            color: #FFFFFF;
            margin: 0 0 8px;
            line-height: 1.4;
        }
        .featured-card-body p {
            font-size: 13px;
            color: var(--text-secondary);
            margin: 0 0 16px;
            line-height: 1.6;
        }
        .featured-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--accent-electric);
            font-weight: 500;
            transition: gap 0.25s ease, color 0.25s ease;
        }
        .featured-link:hover {
            color: #FFFFFF;
            gap: 12px;
        }
        /* ========== FAQ Section ========== */
        .faq-section {
            padding: 64px 0;
            background: var(--bg-secondary);
        }
        .faq-section h2 {
            font-size: 1.5rem;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 28px;
            letter-spacing: 0.5px;
        }
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: all 0.3s ease;
        }
        .faq-item:hover {
            border-color: rgba(34, 211, 238, 0.25);
        }
        .faq-question {
            width: 100%;
            text-align: left;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 15px;
            font-weight: 600;
            padding: 18px 22px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            transition: color 0.3s ease;
        }
        .faq-question:hover {
            color: var(--accent-electric);
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            transition: transform 0.3s ease;
            color: var(--accent-electric);
            font-size: 14px;
        }
        .faq-item.open .faq-question .faq-icon {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 22px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 22px 20px;
        }
        /* ========== Stats Strip ========== */
        .stats-strip {
            padding: 48px 0;
            background: var(--bg-primary);
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .stat-card {
            text-align: center;
            padding: 28px 16px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-card);
            transition: all 0.3s ease;
        }
        .stat-card:hover {
            border-color: rgba(34, 211, 238, 0.25);
            background: rgba(34, 211, 238, 0.06);
        }
        .stat-number {
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--accent-electric);
            font-family: var(--font-mono);
            line-height: 1.2;
            margin-bottom: 6px;
        }
        .stat-label {
            font-size: 13px;
            color: var(--text-muted);
        }
        /* ========== More Link Section ========== */
        .more-link-section {
            padding: 40px 0 56px;
            background: var(--bg-primary);
        }
        .more-link-inner {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .more-link-btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: rgba(34, 211, 238, 0.1);
            border: 1px solid rgba(34, 211, 238, 0.35);
            border-radius: var(--radius-button);
            color: var(--accent-electric);
            font-size: 15px;
            font-weight: 600;
            padding: 14px 32px;
            transition: all 0.35s ease;
            letter-spacing: 1px;
        }
        .more-link-btn:hover {
            background: rgba(34, 211, 238, 0.2);
            border-color: var(--accent-electric);
            box-shadow: var(--glow-cyan-hover);
            color: #FFFFFF;
            transform: translateY(-2px);
        }
        /* ========== Footer ========== */
        .site-footer {
            background: #080F1A;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 48px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            padding-bottom: 36px;
        }
        .footer-brand h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 12px;
        }
        .footer-brand p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 280px;
        }
        .footer-col h4 {
            font-size: 14px;
            font-weight: 600;
            color: #FFFFFF;
            margin-bottom: 14px;
            letter-spacing: 0.5px;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            font-size: 13px;
            color: var(--text-muted);
            transition: color 0.25s ease;
        }
        .footer-col ul li a:hover {
            color: var(--accent-electric);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding: 20px 0;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 10px;
            font-size: 12px;
            color: var(--text-muted);
        }
        .footer-bottom span {
            white-space: nowrap;
        }
        .footer-bottom a {
            color: var(--text-secondary);
            font-size: 12px;
        }
        .footer-bottom a:hover {
            color: var(--accent-electric);
        }
        /* ========== Responsive ========== */
        @media (max-width: 1024px) {
            .content-guide-inner {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .featured-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }
        @media (max-width: 768px) {
            .header-actions .version-switch,
            .header-actions .lang-switch {
                display: none;
            }
            .nav-toggle {
                display: flex;
            }
            .top-nav-inner {
                flex-wrap: nowrap;
                overflow-x: auto;
                padding-bottom: 4px;
            }
            .breadcrumb-section {
                padding-top: 122px;
            }
            .category-hero h1 {
                font-size: 1.5rem;
            }
            .resource-item {
                flex-direction: column;
                gap: 12px;
                padding: 18px;
            }
            .resource-download {
                align-self: flex-start;
            }
            .featured-grid {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
        }
        @media (max-width: 520px) {
            .header-inner {
                gap: 12px;
            }
            .header-search {
                flex: 1;
                min-width: 0;
            }
            .brand-text {
                font-size: 1.1rem;
            }
            .category-hero h1 {
                font-size: 1.3rem;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .stat-number {
                font-size: 1.6rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .resource-item {
                padding: 14px;
            }
            .resource-download {
                width: 100%;
                justify-content: center;
            }
        }