/* roulang page: index */
:root {
            --primary: #2D5BFF;
            --primary-dark: #1E46CC;
            --accent: #10B981;
            --accent-dark: #0DA678;
            --warning: #F59E0B;
            --dark: #0F172A;
            --muted: #475569;
            --surface: #F6F8FC;
            --border: #E8EDF5;
            --card: #FFFFFF;
            --radius-btn: 12px;
            --radius-card: 16px;
            --shadow-card: 0 4px 16px rgba(15, 23, 42, 0.06);
            --shadow-card-hover: 0 10px 28px rgba(15, 23, 42, 0.10);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            background-color: var(--surface);
            color: var(--dark);
            line-height: 1.75;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body.menu-open {
            overflow: hidden;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.2s ease;
        }

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

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }

        button {
            cursor: pointer;
            border: none;
            background: none;
        }

        button:focus,
        a:focus,
        input:focus,
        select:focus,
        textarea:focus {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 4px;
        }

        button:active,
        a:active {
            transform: scale(0.98);
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        @media (min-width: 640px) {
            .container {
                padding-left: 24px;
                padding-right: 24px;
            }
        }

        @media (min-width: 1024px) {
            .container {
                padding-left: 32px;
                padding-right: 32px;
            }
        }

        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border);
            height: 68px;
            display: flex;
            align-items: center;
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            gap: 16px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 22px;
            color: var(--dark);
            letter-spacing: -0.5px;
            white-space: nowrap;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 34px;
            height: 34px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            font-weight: 800;
            flex-shrink: 0;
        }

        .logo-text {
            color: var(--dark);
        }

        .logo-text span {
            color: var(--primary);
        }

        .nav-desktop {
            display: none;
            align-items: center;
            gap: 24px;
            flex: 1;
            justify-content: center;
        }

        .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--muted);
            padding: 8px 4px;
            position: relative;
            transition: color 0.2s ease;
            white-space: nowrap;
        }

        .nav-link:hover {
            color: var(--primary);
        }

        .nav-link.active {
            color: var(--primary);
            font-weight: 600;
        }

        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 4px;
            right: 4px;
            height: 3px;
            background: var(--primary);
            border-radius: 999px;
        }

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

        .lang-toggle {
            display: flex;
            align-items: center;
            gap: 4px;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 999px;
            padding: 4px 6px;
            font-size: 13px;
            font-weight: 500;
            color: var(--muted);
            cursor: pointer;
            transition: all 0.2s ease;
            white-space: nowrap;
        }

        .lang-toggle:hover {
            border-color: var(--primary);
            color: var(--primary);
        }

        .lang-toggle .active-lang {
            background: var(--primary);
            color: #fff;
            border-radius: 999px;
            padding: 2px 10px;
            font-weight: 600;
        }

        .lang-separator {
            color: var(--border);
            font-size: 12px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border-radius: var(--radius-btn);
            padding: 10px 22px;
            font-size: 15px;
            font-weight: 600;
            transition: all 0.25s ease;
            white-space: nowrap;
            line-height: 1.5;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 12px rgba(45, 91, 255, 0.25);
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            box-shadow: 0 6px 20px rgba(45, 91, 255, 0.35);
            transform: translateY(-1px);
        }

        .btn-outline {
            background: #fff;
            color: var(--primary);
            border: 1.5px solid var(--primary);
        }

        .btn-outline:hover {
            background: #EEF2FF;
            transform: translateY(-1px);
        }

        .btn-accent {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 4px 12px rgba(16, 185, 129, 0.2);
        }

        .btn-accent:hover {
            background: var(--accent-dark);
            box-shadow: 0 6px 20px rgba(16, 185, 129, 0.3);
            transform: translateY(-1px);
        }

        .btn-sm {
            padding: 8px 16px;
            font-size: 14px;
            border-radius: 10px;
        }

        .btn-lg {
            padding: 14px 28px;
            font-size: 16px;
            border-radius: 14px;
        }

        .hamburger {
            display: flex;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            background: transparent;
            border: none;
            cursor: pointer;
            flex-shrink: 0;
            z-index: 60;
        }

        .hamburger span {
            display: block;
            width: 24px;
            height: 2.5px;
            background: var(--dark);
            border-radius: 999px;
            transition: all 0.3s ease;
        }

        .hamburger.open span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }

        .hamburger.open span:nth-child(2) {
            opacity: 0;
        }

        .hamburger.open span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        .mobile-menu {
            position: fixed;
            top: 68px;
            left: 0;
            right: 0;
            bottom: 0;
            background: #fff;
            z-index: 40;
            padding: 24px 20px;
            overflow-y: auto;
            transform: translateY(-100%);
            transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            display: flex;
            flex-direction: column;
        }

        .mobile-menu.open {
            transform: translateY(0);
        }

        .mobile-nav-links {
            display: flex;
            flex-direction: column;
            gap: 4px;
            flex: 1;
        }

        .mobile-nav-link {
            font-size: 18px;
            font-weight: 500;
            padding: 14px 8px;
            color: var(--dark);
            border-bottom: 1px solid #F1F5F9;
            transition: color 0.2s ease;
        }

        .mobile-nav-link:hover {
            color: var(--primary);
        }

        .mobile-nav-link.active {
            color: var(--primary);
            font-weight: 700;
        }

        .mobile-menu-actions {
            display: flex;
            flex-direction: column;
            gap: 12px;
            padding-top: 16px;
            border-top: 1px solid var(--border);
        }

        @media (min-width: 1024px) {
            .nav-desktop {
                display: flex;
            }
            .hamburger {
                display: none;
            }
            .mobile-menu {
                display: none;
            }
        }

        @media (max-width: 1023px) {
            .nav-desktop {
                display: none !important;
            }
            .hamburger {
                display: flex !important;
            }
            .nav-actions .btn-primary {
                display: none;
            }
            .nav-actions .lang-toggle {
                display: flex;
            }
        }

        @media (max-width: 480px) {
            .logo {
                font-size: 18px;
                gap: 8px;
            }
            .logo-icon {
                width: 28px;
                height: 28px;
                font-size: 15px;
                border-radius: 8px;
            }
            .lang-toggle {
                font-size: 11px;
                padding: 3px 5px;
            }
            .lang-toggle .active-lang {
                padding: 1px 8px;
            }
        }

        /* Hero */
        .hero {
            position: relative;
            background: var(--surface);
            overflow: hidden;
            padding: 56px 0 40px;
        }

        @media (min-width: 768px) {
            .hero {
                padding: 80px 0 64px;
            }
        }

        .hero-bg {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-image: url('/assets/images/f8eec57284bdc3d7.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.08;
            pointer-events: none;
        }

        .hero-content {
            position: relative;
            z-index: 1;
            display: grid;
            grid-template-columns: 1fr;
            gap: 32px;
        }

        @media (min-width: 1024px) {
            .hero-content {
                grid-template-columns: 1.15fr 0.85fr;
                gap: 48px;
                align-items: center;
            }
        }

        .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(45, 91, 255, 0.08);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 14px;
            border-radius: 999px;
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }

        .hero-tag-dot {
            width: 6px;
            height: 6px;
            background: var(--accent);
            border-radius: 50%;
            animation: pulse-dot 1.8s ease-in-out infinite;
        }

        @keyframes pulse-dot {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.5; transform: scale(1.5); }
        }

        .hero-title {
            font-size: 28px;
            font-weight: 800;
            color: var(--dark);
            line-height: 1.3;
            letter-spacing: -0.5px;
            margin-bottom: 16px;
        }

        @media (min-width: 768px) {
            .hero-title {
                font-size: 36px;
                line-height: 1.25;
            }
        }

        @media (min-width: 1024px) {
            .hero-title {
                font-size: 42px;
            }
        }

        .hero-title span {
            color: var(--primary);
        }

        .hero-desc {
            font-size: 16px;
            color: var(--muted);
            line-height: 1.85;
            max-width: 560px;
            margin-bottom: 24px;
        }

        .hero-desc strong {
            color: var(--dark);
            font-weight: 600;
        }

        .hero-btns {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-bottom: 24px;
        }

        .hero-trust {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
            font-size: 13px;
            color: var(--muted);
        }

        .hero-trust-item {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .hero-trust-ic {
            width: 18px;
            height: 18px;
            background: rgba(16, 185, 129, 0.12);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent);
            font-size: 10px;
            font-weight: 700;
        }

        /* Hero Card */
        .hero-card {
            background: #fff;
            border-radius: 20px;
            box-shadow: var(--shadow-card-hover);
            padding: 20px;
            border: 1px solid var(--border);
            transition: box-shadow 0.3s ease;
        }

        .hero-card:hover {
            box-shadow: 0 14px 36px rgba(15, 23, 42, 0.12);
        }

        .hero-card-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 14px;
            padding-bottom: 12px;
            border-bottom: 1px solid var(--border);
        }

        .hero-card-title {
            font-size: 15px;
            font-weight: 700;
            color: var(--dark);
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .live-badge {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            background: rgba(16, 185, 129, 0.12);
            color: var(--accent);
            font-size: 12px;
            font-weight: 700;
            padding: 3px 10px;
            border-radius: 999px;
        }

        .live-badge-dot {
            width: 5px;
            height: 5px;
            background: var(--accent);
            border-radius: 50%;
            animation: pulse-dot 1.5s infinite;
        }

        .match-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 10px 0;
            border-bottom: 1px solid #F1F5F9;
            gap: 8px;
            transition: background 0.2s ease;
            border-radius: 8px;
            padding: 10px 8px;
        }

        .match-row:hover {
            background: #F8FAFF;
        }

        .match-row:last-child {
            border-bottom: none;
        }

        .match-team {
            font-size: 14px;
            font-weight: 600;
            color: var(--dark);
            flex: 1;
            text-align: center;
            white-space: nowrap;
        }

        .match-vs {
            font-size: 12px;
            color: #94A3B8;
            font-weight: 500;
            flex-shrink: 0;
        }

        .match-time {
            font-size: 12px;
            font-weight: 600;
            color: var(--primary);
            flex-shrink: 0;
            background: rgba(45, 91, 255, 0.06);
            padding: 3px 8px;
            border-radius: 6px;
            white-space: nowrap;
        }

        .match-status {
            font-size: 11px;
            font-weight: 600;
            flex-shrink: 0;
            padding: 3px 8px;
            border-radius: 6px;
            white-space: nowrap;
        }

        .status-live {
            color: var(--accent);
            background: rgba(16, 185, 129, 0.1);
        }

        .status-soon {
            color: var(--warning);
            background: rgba(245, 158, 11, 0.1);
        }

        .status-upcoming {
            color: var(--muted);
            background: #F1F5F9;
        }

        /* Section common */
        .section {
            padding: 48px 0;
        }

        @media (min-width: 768px) {
            .section {
                padding: 72px 0;
            }
        }

        .section-head {
            margin-bottom: 28px;
        }

        .section-title {
            font-size: 22px;
            font-weight: 800;
            color: var(--dark);
            letter-spacing: -0.4px;
            margin-bottom: 8px;
        }

        @media (min-width: 768px) {
            .section-title {
                font-size: 28px;
            }
        }

        .section-desc {
            font-size: 15px;
            color: var(--muted);
            line-height: 1.8;
            max-width: 680px;
        }

        .section-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            background: rgba(45, 91, 255, 0.07);
            padding: 4px 12px;
            border-radius: 999px;
            margin-bottom: 12px;
        }

        /* Cards */
        .card-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 16px;
        }

        @media (min-width: 640px) {
            .card-grid.col-2 {
                grid-template-columns: repeat(2, 1fr);
            }
            .card-grid.col-3 {
                grid-template-columns: repeat(2, 1fr);
            }
            .card-grid.col-4 {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (min-width: 1024px) {
            .card-grid.col-3 {
                grid-template-columns: repeat(3, 1fr);
            }
            .card-grid.col-4 {
                grid-template-columns: repeat(4, 1fr);
            }
        }

        .card {
            background: #fff;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border);
            padding: 24px;
            transition: all 0.3s ease;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
            border-color: #D6E0F5;
        }

        .card-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            flex-shrink: 0;
            background: rgba(45, 91, 255, 0.08);
            color: var(--primary);
        }

        .card-icon.green {
            background: rgba(16, 185, 129, 0.1);
            color: var(--accent);
        }

        .card-icon.orange {
            background: rgba(245, 158, 11, 0.1);
            color: var(--warning);
        }

        .card-title {
            font-size: 17px;
            font-weight: 700;
            color: var(--dark);
            line-height: 1.4;
        }

        .card-desc {
            font-size: 14px;
            color: var(--muted);
            line-height: 1.75;
            flex: 1;
        }

        .card-meta {
            font-size: 13px;
            color: #94A3B8;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        /* Stats bar */
        .stats-bar {
            background: #fff;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border);
            padding: 28px 20px;
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }

        @media (min-width: 768px) {
            .stats-bar {
                grid-template-columns: repeat(4, 1fr);
                padding: 32px 28px;
                gap: 24px;
            }
        }

        .stat-item {
            text-align: center;
            padding: 8px 6px;
            border-radius: 12px;
            transition: background 0.2s ease;
        }

        .stat-item:hover {
            background: #F8FAFF;
        }

        .stat-number {
            font-size: 32px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
            letter-spacing: -1px;
        }

        .stat-label {
            font-size: 14px;
            color: var(--muted);
            margin-top: 4px;
        }

        /* Steps */
        .steps-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 16px;
        }

        @media (min-width: 640px) {
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (min-width: 1024px) {
            .steps-grid.steps-4 {
                grid-template-columns: repeat(4, 1fr);
            }
        }

        .step-card {
            background: #fff;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border);
            padding: 20px;
            display: flex;
            flex-direction: column;
            gap: 10px;
            position: relative;
            transition: all 0.3s ease;
        }

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

        .step-num {
            font-size: 13px;
            font-weight: 700;
            color: var(--primary);
            background: rgba(45, 91, 255, 0.08);
            width: 28px;
            height: 28px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .step-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--dark);
        }

        .step-desc {
            font-size: 14px;
            color: var(--muted);
            line-height: 1.7;
        }

        /* Match wall */
        .match-wall {
            display: grid;
            grid-template-columns: 1fr;
            gap: 14px;
        }

        @media (min-width: 640px) {
            .match-wall {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (min-width: 1024px) {
            .match-wall {
                grid-template-columns: repeat(3, 1fr);
            }
        }

        .match-card {
            background: #fff;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: all 0.3s ease;
            display: flex;
            flex-direction: column;
        }

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

        .match-card-img {
            height: 140px;
            position: relative;
            overflow: hidden;
        }

        .match-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

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

        .match-card-body {
            padding: 16px 18px;
            display: flex;
            flex-direction: column;
            gap: 8px;
            flex: 1;
        }

        .match-card-league {
            font-size: 12px;
            font-weight: 600;
            color: var(--primary);
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }

        .match-card-teams {
            font-size: 17px;
            font-weight: 700;
            color: var(--dark);
            line-height: 1.3;
        }

        .match-card-info {
            font-size: 13px;
            color: var(--muted);
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }

        .match-card-badge {
            font-size: 11px;
            font-weight: 600;
            padding: 3px 8px;
            border-radius: 6px;
        }

        /* News list */
        .news-list {
            display: grid;
            grid-template-columns: 1fr;
            gap: 16px;
        }

        @media (min-width: 768px) {
            .news-list {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        .news-item {
            background: #fff;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border);
            padding: 20px;
            display: flex;
            gap: 16px;
            transition: all 0.3s ease;
            flex-direction: column;
        }

        @media (min-width: 640px) {
            .news-item {
                flex-direction: row;
                align-items: flex-start;
            }
        }

        .news-item:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }

        .news-img {
            width: 100%;
            height: 120px;
            border-radius: 10px;
            overflow: hidden;
            flex-shrink: 0;
        }

        @media (min-width: 640px) {
            .news-img {
                width: 120px;
                height: 100px;
            }
        }

        .news-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .news-content {
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 6px;
        }

        .news-date {
            font-size: 12px;
            font-weight: 500;
            color: #94A3B8;
        }

        .news-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--dark);
            line-height: 1.4;
        }

        .news-excerpt {
            font-size: 14px;
            color: var(--muted);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-more {
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: all 0.2s ease;
            align-self: flex-start;
            margin-top: 2px;
        }

        .news-more:hover {
            color: var(--primary-dark);
            gap: 8px;
        }

        /* Partners */
        .partners-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
        }

        @media (min-width: 640px) {
            .partners-grid {
                grid-template-columns: repeat(4, 1fr);
            }
        }

        @media (min-width: 1024px) {
            .partners-grid {
                grid-template-columns: repeat(6, 1fr);
            }
        }

        .partner-item {
            background: #fff;
            border-radius: 12px;
            border: 1px solid var(--border);
            padding: 16px;
            text-align: center;
            font-size: 13px;
            font-weight: 600;
            color: var(--muted);
            transition: all 0.25s ease;
            display: flex;
            align-items: center;
            justify-content: center;
            min-height: 60px;
        }

        .partner-item:hover {
            border-color: var(--primary);
            color: var(--primary);
            box-shadow: var(--shadow-card);
        }

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            max-width: 820px;
        }

        .faq-item {
            background: #fff;
            border-radius: 14px;
            border: 1px solid var(--border);
            overflow: hidden;
            transition: all 0.3s ease;
        }

        .faq-item:hover {
            box-shadow: var(--shadow-card);
            border-color: #D6E0F5;
        }

        .faq-question {
            padding: 16px 20px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            font-weight: 600;
            font-size: 15px;
            color: var(--dark);
            transition: color 0.2s ease;
            user-select: none;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            line-height: 1.6;
        }

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

        .faq-icon {
            flex-shrink: 0;
            width: 20px;
            height: 20px;
            color: var(--primary);
            transition: transform 0.3s ease;
            font-size: 18px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
            padding: 0 20px;
            color: var(--muted);
            font-size: 14px;
            line-height: 1.75;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding-bottom: 16px;
        }

        /* Guarantee bar */
        .guarantee-bar {
            background: #fff;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border);
            padding: 24px;
            display: grid;
            grid-template-columns: 1fr;
            gap: 14px;
        }

        @media (min-width: 640px) {
            .guarantee-bar {
                grid-template-columns: repeat(2, 1fr);
                padding: 28px;
            }
        }

        @media (min-width: 1024px) {
            .guarantee-bar {
                grid-template-columns: repeat(4, 1fr);
            }
        }

        .guarantee-item {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 10px;
            border-radius: 10px;
            transition: background 0.2s ease;
        }

        .guarantee-item:hover {
            background: #F8FAFF;
        }

        .guarantee-icon {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: rgba(16, 185, 129, 0.1);
            color: var(--accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            flex-shrink: 0;
        }

        .guarantee-text {
            font-size: 14px;
            font-weight: 600;
            color: var(--dark);
        }

        .guarantee-sub {
            font-size: 12px;
            color: var(--muted);
            font-weight: 400;
        }

        /* CTA section */
        .cta-section {
            background: #fff;
            border-radius: 20px;
            box-shadow: var(--shadow-card-hover);
            border: 1px solid var(--border);
            padding: 36px 24px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        @media (min-width: 768px) {
            .cta-section {
                padding: 48px 36px;
            }
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -80px;
            width: 250px;
            height: 250px;
            background: radial-gradient(circle, rgba(45, 91, 255, 0.06) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-title {
            font-size: 24px;
            font-weight: 800;
            color: var(--dark);
            margin-bottom: 12px;
            position: relative;
        }

        @media (min-width: 768px) {
            .cta-title {
                font-size: 30px;
            }
        }

        .cta-desc {
            font-size: 15px;
            color: var(--muted);
            max-width: 520px;
            margin: 0 auto 24px;
            line-height: 1.8;
            position: relative;
        }

        .cta-form {
            display: flex;
            flex-direction: column;
            gap: 12px;
            max-width: 420px;
            margin: 0 auto;
            position: relative;
        }

        @media (min-width: 480px) {
            .cta-form {
                flex-direction: row;
            }
        }

        .cta-input {
            flex: 1;
            padding: 12px 16px;
            border-radius: var(--radius-btn);
            border: 1.5px solid var(--border);
            background: #FAFBFF;
            font-size: 14px;
            color: var(--dark);
            transition: all 0.25s ease;
        }

        .cta-input:focus {
            border-color: var(--primary);
            background: #fff;
            outline: none;
            box-shadow: 0 0 0 3px rgba(45, 91, 255, 0.1);
        }

        .cta-privacy {
            font-size: 12px;
            color: #94A3B8;
            margin-top: 12px;
            position: relative;
        }

        /* Category entry */
        .category-entry-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 14px;
        }

        @media (min-width: 640px) {
            .category-entry-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }

        @media (min-width: 1024px) {
            .category-entry-grid {
                grid-template-columns: repeat(6, 1fr);
            }
        }

        .category-entry {
            background: #fff;
            border-radius: 14px;
            border: 1px solid var(--border);
            padding: 18px 14px;
            text-align: center;
            font-size: 14px;
            font-weight: 600;
            color: var(--dark);
            transition: all 0.3s ease;
            cursor: pointer;
        }

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

        .category-entry-icon {
            font-size: 22px;
            margin-bottom: 8px;
            display: block;
            color: var(--primary);
        }

        /* Footer */
        .site-footer {
            background: var(--footer);
            color: #CBD5E1;
            padding: 48px 0 24px;
            margin-top: 48px;
        }

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

        @media (min-width: 640px) {
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (min-width: 1024px) {
            .footer-grid {
                grid-template-columns: 2fr 1fr 1fr 1.5fr;
                gap: 36px;
            }
        }

        .footer-brand-desc {
            font-size: 14px;
            line-height: 1.8;
            color: #94A3B8;
            margin-top: 12px;
            max-width: 300px;
        }

        .footer-col-title {
            font-size: 15px;
            font-weight: 700;
            color: #F1F5F9;
            margin-bottom: 14px;
        }

        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-link {
            font-size: 14px;
            color: #94A3B8;
            transition: color 0.2s ease;
        }

        .footer-link:hover {
            color: #fff;
        }

        .footer-bottom {
            border-top: 1px solid #1E293B;
            padding-top: 20px;
            display: flex;
            flex-direction: column;
            gap: 10px;
            align-items: center;
            text-align: center;
            font-size: 13px;
            color: #64748B;
        }

        @media (min-width: 640px) {
            .footer-bottom {
                flex-direction: row;
                justify-content: space-between;
                text-align: left;
            }
        }

        .footer-bottom a {
            color: #94A3B8;
            transition: color 0.2s ease;
        }

        .footer-bottom a:hover {
            color: #fff;
        }

        .footer-bottom-links {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
            justify-content: center;
        }

        /* Back to top */
        .back-to-top {
            position: fixed;
            bottom: 24px;
            right: 24px;
            width: 44px;
            height: 44px;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 50%;
            box-shadow: var(--shadow-card-hover);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--primary);
            cursor: pointer;
            z-index: 30;
            transition: all 0.3s ease;
            opacity: 0;
            pointer-events: none;
            transform: translateY(16px);
        }

        .back-to-top.visible {
            opacity: 1;
            pointer-events: auto;
            transform: translateY(0);
        }

        .back-to-top:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }

        /* Divider */
        .divider {
            height: 1px;
            background: var(--border);
            margin: 0;
        }

        /* Responsive */
        @media (max-width: 520px) {
            .hero-title {
                font-size: 24px;
            }
            .hero-desc {
                font-size: 14px;
            }
            .section {
                padding: 36px 0;
            }
            .section-title {
                font-size: 20px;
            }
            .stats-bar {
                grid-template-columns: repeat(2, 1fr);
                gap: 14px;
                padding: 20px 14px;
            }
            .stat-number {
                font-size: 26px;
            }
            .card {
                padding: 18px;
            }
            .news-item {
                padding: 16px;
            }
            .cta-section {
                padding: 28px 16px;
            }
            .cta-title {
                font-size: 22px;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #2D5BFF;
            --primary-dark: #1E46CC;
            --accent: #10B981;
            --accent-dark: #0DA678;
            --warning: #F59E0B;
            --dark: #0F172A;
            --muted: #475569;
            --surface: #F6F8FC;
            --border: #E8EDF5;
            --card: #FFFFFF;
            --radius-btn: 12px;
            --radius-card: 16px;
            --shadow-card: 0 4px 16px rgba(15, 23, 42, 0.06);
            --shadow-card-hover: 0 10px 28px rgba(15, 23, 42, 0.10);
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            background-color: var(--surface);
            color: var(--dark);
            line-height: 1.75;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body.menu-open {
            overflow: hidden;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.2s ease;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
        }
        button:focus,
        a:focus,
        input:focus,
        select:focus,
        textarea:focus {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 4px;
        }
        button:active,
        a:active {
            transform: scale(0.98);
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }
        @media (min-width: 768px) {
            .container {
                padding-left: 24px;
                padding-right: 24px;
            }
        }
        @media (min-width: 1024px) {
            .container {
                padding-left: 32px;
                padding-right: 32px;
            }
        }
        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border);
            height: 68px;
            display: flex;
            align-items: center;
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            gap: 16px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 22px;
            color: var(--dark);
            letter-spacing: -0.5px;
            white-space: nowrap;
            flex-shrink: 0;
        }
        .logo-icon {
            width: 34px;
            height: 34px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            font-weight: 800;
            flex-shrink: 0;
        }
        .logo-text {
            color: var(--dark);
        }
        .logo-text span {
            color: var(--primary);
        }
        .nav-desktop {
            display: none;
            align-items: center;
            gap: 24px;
            flex: 1;
            justify-content: center;
        }
        .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--muted);
            padding: 8px 4px;
            position: relative;
            transition: color 0.2s ease;
            white-space: nowrap;
        }
        .nav-link:hover {
            color: var(--primary);
        }
        .nav-link.active {
            color: var(--primary);
            font-weight: 600;
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 4px;
            right: 4px;
            height: 3px;
            background: var(--primary);
            border-radius: 999px;
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .lang-toggle {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 6px 14px;
            border-radius: 999px;
            border: 1.5px solid var(--border);
            background: #fff;
            font-size: 13px;
            font-weight: 500;
            color: var(--muted);
            transition: all 0.2s ease;
            white-space: nowrap;
        }
        .lang-toggle:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: #EEF2FF;
        }
        .lang-toggle .active-lang {
            color: var(--primary);
            font-weight: 700;
        }
        .lang-separator {
            color: var(--border);
            font-size: 12px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border-radius: var(--radius-btn);
            padding: 10px 22px;
            font-size: 15px;
            font-weight: 600;
            transition: all 0.25s ease;
            white-space: nowrap;
            line-height: 1.5;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 12px rgba(45, 91, 255, 0.25);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            box-shadow: 0 6px 20px rgba(45, 91, 255, 0.35);
            transform: translateY(-1px);
        }
        .btn-outline {
            background: #fff;
            color: var(--primary);
            border: 1.5px solid var(--primary);
        }
        .btn-outline:hover {
            background: #EEF2FF;
            transform: translateY(-1px);
        }
        .btn-accent {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 4px 12px rgba(16, 185, 129, 0.2);
        }
        .btn-accent:hover {
            background: var(--accent-dark);
            box-shadow: 0 6px 20px rgba(16, 185, 129, 0.3);
            transform: translateY(-1px);
        }
        .btn-sm {
            padding: 8px 16px;
            font-size: 14px;
            border-radius: 10px;
        }
        .btn-lg {
            padding: 14px 28px;
            font-size: 16px;
            border-radius: 14px;
        }
        .hamburger {
            display: flex;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            background: transparent;
            border: none;
            cursor: pointer;
            flex-shrink: 0;
            z-index: 60;
        }
        .hamburger span {
            display: block;
            width: 24px;
            height: 2.5px;
            background: var(--dark);
            border-radius: 999px;
            transition: all 0.3s ease;
        }
        .hamburger.active span:nth-child(1) {
            transform: translateY(7.5px) rotate(45deg);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.active span:nth-child(3) {
            transform: translateY(-7.5px) rotate(-45deg);
        }
        @media (min-width: 1024px) {
            .nav-desktop {
                display: flex;
            }
            .hamburger {
                display: none;
            }
            .lang-toggle {
                display: flex;
            }
        }
        @media (max-width: 1023px) {
            .lang-toggle {
                display: none;
            }
            .nav-actions .btn-primary {
                display: none;
            }
        }
        /* Mobile drawer */
        .mobile-drawer {
            position: fixed;
            top: 68px;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(255, 255, 255, 0.98);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            z-index: 45;
            display: flex;
            flex-direction: column;
            padding: 24px 32px;
            gap: 8px;
            transform: translateX(100%);
            transition: transform 0.3s ease;
            overflow-y: auto;
        }
        .mobile-drawer.open {
            transform: translateX(0);
        }
        .mobile-drawer .nav-link {
            font-size: 18px;
            padding: 14px 4px;
            border-bottom: 1px solid var(--border);
        }
        .mobile-drawer .lang-toggle {
            display: flex;
            margin-top: 12px;
            align-self: flex-start;
        }
        .mobile-drawer .btn {
            margin-top: 16px;
            width: 100%;
            justify-content: center;
        }
        /* Section base */
        .section {
            padding: 56px 0;
        }
        @media (min-width: 768px) {
            .section {
                padding: 72px 0;
            }
        }
        @media (min-width: 1024px) {
            .section {
                padding: 88px 0;
            }
        }
        .section-alt {
            background: #fff;
        }
        .section-surface {
            background: var(--surface);
        }
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            background: #EEF2FF;
            padding: 4px 14px;
            border-radius: 999px;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }
        .section-title {
            font-size: 24px;
            font-weight: 700;
            line-height: 1.4;
            color: var(--dark);
            margin-bottom: 12px;
            letter-spacing: -0.5px;
        }
        .section-desc {
            font-size: 15px;
            color: var(--muted);
            line-height: 1.85;
            max-width: 680px;
        }
        @media (min-width: 768px) {
            .section-title {
                font-size: 28px;
            }
        }
        @media (min-width: 1024px) {
            .section-title {
                font-size: 32px;
            }
        }
        /* Cards */
        .match-card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: all 0.3s ease;
            display: flex;
            flex-direction: column;
            height: 100%;
        }
        .match-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
            border-color: #D0D7E6;
        }
        .match-card-img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            background: #E8EDF5;
        }
        .match-card-body {
            padding: 20px 22px 24px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .match-card-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 12px;
            font-weight: 600;
            padding: 3px 12px;
            border-radius: 999px;
            background: #F1F5F9;
            color: var(--muted);
            margin-bottom: 10px;
            width: fit-content;
        }
        .match-card-tag.live {
            background: #D1FAE5;
            color: #065F46;
        }
        .match-card-tag.upcoming {
            background: #FEF3C7;
            color: #92400E;
        }
        .match-card-tag.replay {
            background: #E0E7FF;
            color: #3730A3;
        }
        .match-card-title {
            font-size: 17px;
            font-weight: 700;
            color: var(--dark);
            line-height: 1.5;
            margin-bottom: 8px;
        }
        .match-card-meta {
            font-size: 13px;
            color: var(--muted);
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 12px;
            flex-wrap: wrap;
        }
        .match-card-desc {
            font-size: 14px;
            color: var(--muted);
            line-height: 1.8;
            margin-bottom: 16px;
            flex: 1;
        }
        .match-card-link {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            transition: color 0.2s ease;
        }
        .match-card-link:hover {
            color: var(--primary-dark);
        }
        .match-card-link .arrow {
            transition: transform 0.2s ease;
        }
        .match-card-link:hover .arrow {
            transform: translateX(4px);
        }
        /* Filter bar */
        .filter-bar {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 16px 20px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 10px;
        }
        .filter-chip {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 13px;
            font-weight: 500;
            padding: 7px 16px;
            border-radius: 999px;
            border: 1.5px solid var(--border);
            background: #fff;
            color: var(--muted);
            transition: all 0.2s ease;
            white-space: nowrap;
        }
        .filter-chip:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: #F8FAFF;
        }
        .filter-chip.active {
            border-color: var(--primary);
            color: #fff;
            background: var(--primary);
            font-weight: 600;
        }
        /* Breadcrumb */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--muted);
            margin-bottom: 16px;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--muted);
            transition: color 0.2s ease;
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb .sep {
            color: #CBD5E1;
        }
        .breadcrumb .current {
            color: var(--primary);
            font-weight: 600;
        }
        /* Topic cards */
        .topic-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: all 0.3s ease;
            display: flex;
            flex-direction: column;
            height: 100%;
        }
        .topic-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }
        .topic-card-img {
            width: 100%;
            height: 140px;
            object-fit: cover;
            background: #E8EDF5;
        }
        .topic-card-body {
            padding: 18px 20px 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .topic-card-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 6px;
        }
        .topic-card-desc {
            font-size: 13px;
            color: var(--muted);
            line-height: 1.7;
            flex: 1;
        }
        /* Ranking list */
        .ranking-item {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 14px 16px;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 12px;
            margin-bottom: 10px;
            transition: all 0.2s ease;
        }
        .ranking-item:hover {
            border-color: #C7D2E8;
            box-shadow: 0 2px 10px rgba(15, 23, 42, 0.04);
        }
        .ranking-num {
            width: 32px;
            height: 32px;
            border-radius: 999px;
            background: #F1F5F9;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 14px;
            color: var(--muted);
            flex-shrink: 0;
        }
        .ranking-num.top {
            background: var(--primary);
            color: #fff;
        }
        .ranking-info {
            flex: 1;
            min-width: 0;
        }
        .ranking-name {
            font-size: 15px;
            font-weight: 600;
            color: var(--dark);
        }
        .ranking-meta {
            font-size: 12px;
            color: var(--muted);
        }
        .ranking-badge {
            font-size: 12px;
            font-weight: 600;
            padding: 3px 12px;
            border-radius: 999px;
            background: #FEF3C7;
            color: #92400E;
            flex-shrink: 0;
        }
        .ranking-badge.hot {
            background: #FEE2E2;
            color: #991B1B;
        }
        /* FAQ */
        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 14px;
            margin-bottom: 12px;
            overflow: hidden;
            transition: all 0.2s ease;
        }
        .faq-item:hover {
            border-color: #C7D2E8;
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 20px;
            font-size: 15px;
            font-weight: 600;
            color: var(--dark);
            text-align: left;
            background: transparent;
            cursor: pointer;
            transition: all 0.2s ease;
        }
        .faq-question:hover {
            color: var(--primary);
            background: #F8FAFF;
        }
        .faq-question .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 999px;
            background: #F1F5F9;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            color: var(--muted);
            flex-shrink: 0;
            transition: all 0.3s ease;
        }
        .faq-item.open .faq-question .faq-icon {
            background: var(--primary);
            color: #fff;
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
            padding: 0 20px;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding-bottom: 18px;
        }
        .faq-answer p {
            font-size: 14px;
            color: var(--muted);
            line-height: 1.85;
        }
        /* Related */
        .related-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 14px;
            padding: 18px 20px;
            transition: all 0.25s ease;
            display: block;
            height: 100%;
        }
        .related-card:hover {
            box-shadow: var(--shadow-card-hover);
            border-color: #D0D7E6;
            transform: translateY(-2px);
        }
        .related-card-title {
            font-size: 15px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 6px;
        }
        .related-card-desc {
            font-size: 13px;
            color: var(--muted);
            line-height: 1.7;
        }
        /* Footer */
        .site-footer {
            background: var(--dark);
            color: #CBD5E1;
            padding: 56px 0 28px;
        }
        .site-footer .container {
            width: 100%;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 32px;
            margin-bottom: 40px;
        }
        @media (min-width: 768px) {
            .footer-grid {
                grid-template-columns: 2fr 1fr 1fr 1fr;
            }
        }
        .footer-brand-desc {
            font-size: 14px;
            color: #94A3B8;
            line-height: 1.85;
            margin-top: 14px;
            max-width: 300px;
        }
        .footer-col-title {
            font-size: 15px;
            font-weight: 600;
            color: #F1F5F9;
            margin-bottom: 14px;
        }
        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-link {
            font-size: 14px;
            color: #94A3B8;
            transition: color 0.2s ease;
        }
        .footer-link:hover {
            color: #60A5FA;
        }
        .footer-bottom {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 12px;
            padding-top: 24px;
            border-top: 1px solid #1E293B;
            font-size: 13px;
            color: #64748B;
            text-align: center;
        }
        @media (min-width: 768px) {
            .footer-bottom {
                flex-direction: row;
                justify-content: space-between;
            }
        }
        .footer-bottom-links {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .footer-bottom-links a {
            color: #94A3B8;
            transition: color 0.2s ease;
        }
        .footer-bottom-links a:hover {
            color: #60A5FA;
        }
        .footer-bottom-links span {
            color: #334155;
        }
        /* Page-specific additions */
        .schedules-hero {
            background: #fff;
            border-bottom: 1px solid var(--border);
            padding: 40px 0 32px;
        }
        .schedules-h1 {
            font-size: 28px;
            font-weight: 700;
            line-height: 1.4;
            color: var(--dark);
            margin-bottom: 10px;
            letter-spacing: -0.5px;
        }
        @media (min-width: 768px) {
            .schedules-h1 {
                font-size: 34px;
            }
        }
        @media (min-width: 1024px) {
            .schedules-h1 {
                font-size: 40px;
            }
        }
        .schedules-desc {
            font-size: 15px;
            color: var(--muted);
            line-height: 1.85;
            max-width: 760px;
        }
        .schedule-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
        }
        @media (min-width: 640px) {
            .schedule-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (min-width: 1024px) {
            .schedule-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }
        .topic-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 18px;
        }
        @media (min-width: 640px) {
            .topic-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (min-width: 1024px) {
            .topic-grid {
                grid-template-columns: repeat(4, 1fr);
            }
        }
        .ranking-list {
            display: flex;
            flex-direction: column;
        }
        .view-more-bar {
            display: flex;
            justify-content: center;
            margin-top: 24px;
        }

/* roulang page: category3 */
:root {
            --primary: #2D5BFF;
            --primary-dark: #1E46CC;
            --accent: #10B981;
            --accent-dark: #0DA678;
            --warning: #F59E0B;
            --dark: #0F172A;
            --muted: #475569;
            --surface: #F6F8FC;
            --border: #E8EDF5;
            --card: #FFFFFF;
            --radius-btn: 12px;
            --radius-card: 16px;
            --shadow-card: 0 4px 16px rgba(15, 23, 42, 0.06);
            --shadow-card-hover: 0 10px 28px rgba(15, 23, 42, 0.10);
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            background-color: var(--surface);
            color: var(--dark);
            line-height: 1.75;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body.menu-open {
            overflow: hidden;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.2s ease;
        }

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

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }

        button {
            cursor: pointer;
            border: none;
            background: none;
        }

        button:focus,
        a:focus,
        input:focus,
        select:focus,
        textarea:focus {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 4px;
        }

        button:active,
        a:active {
            transform: scale(0.98);
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        @media (min-width: 768px) {
            .container {
                padding-left: 32px;
                padding-right: 32px;
            }
        }

        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border);
            height: 68px;
            display: flex;
            align-items: center;
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            gap: 16px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 22px;
            color: var(--dark);
            letter-spacing: -0.5px;
            white-space: nowrap;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 34px;
            height: 34px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            font-weight: 800;
            flex-shrink: 0;
        }

        .logo-text {
            color: var(--dark);
        }

        .logo-text span {
            color: var(--primary);
        }

        .nav-desktop {
            display: none;
            align-items: center;
            gap: 24px;
            flex: 1;
            justify-content: center;
        }

        .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--muted);
            padding: 8px 4px;
            position: relative;
            transition: color 0.2s ease;
            white-space: nowrap;
        }

        .nav-link:hover {
            color: var(--primary);
        }

        .nav-link.active {
            color: var(--primary);
            font-weight: 600;
        }

        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 4px;
            right: 4px;
            height: 3px;
            background: var(--primary);
            border-radius: 999px;
        }

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

        .lang-toggle {
            display: flex;
            align-items: center;
            gap: 4px;
            font-size: 13px;
            font-weight: 500;
            color: var(--muted);
            background: #F1F5F9;
            border: 1px solid var(--border);
            border-radius: 999px;
            padding: 6px 14px;
            transition: all 0.2s ease;
            white-space: nowrap;
        }

        .lang-toggle:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: #EEF2FF;
        }

        .lang-toggle .active-lang {
            color: var(--primary);
            font-weight: 600;
        }

        .lang-separator {
            color: var(--border);
            font-size: 12px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border-radius: var(--radius-btn);
            padding: 10px 22px;
            font-size: 15px;
            font-weight: 600;
            transition: all 0.25s ease;
            white-space: nowrap;
            line-height: 1.5;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 12px rgba(45, 91, 255, 0.25);
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            box-shadow: 0 6px 20px rgba(45, 91, 255, 0.35);
            transform: translateY(-1px);
        }

        .btn-outline {
            background: #fff;
            color: var(--primary);
            border: 1.5px solid var(--primary);
        }

        .btn-outline:hover {
            background: #EEF2FF;
            transform: translateY(-1px);
        }

        .btn-accent {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 4px 12px rgba(16, 185, 129, 0.2);
        }

        .btn-accent:hover {
            background: var(--accent-dark);
            box-shadow: 0 6px 20px rgba(16, 185, 129, 0.3);
            transform: translateY(-1px);
        }

        .btn-sm {
            padding: 8px 16px;
            font-size: 14px;
            border-radius: 10px;
        }

        .btn-lg {
            padding: 14px 28px;
            font-size: 16px;
            border-radius: 14px;
        }

        .hamburger {
            display: flex;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            background: transparent;
            border: none;
            cursor: pointer;
            flex-shrink: 0;
            z-index: 60;
        }

        .hamburger span {
            display: block;
            width: 24px;
            height: 2.5px;
            background: var(--dark);
            border-radius: 999px;
            transition: all 0.3s ease;
        }

        .hamburger.active span:nth-child(1) {
            transform: translateY(7.5px) rotate(45deg);
        }

        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }

        .hamburger.active span:nth-child(3) {
            transform: translateY(-7.5px) rotate(-45deg);
        }

        /* Mobile nav drawer */
        .mobile-nav {
            position: fixed;
            top: 68px;
            left: 0;
            right: 0;
            bottom: 0;
            background: #fff;
            z-index: 40;
            display: flex;
            flex-direction: column;
            padding: 24px 24px 40px;
            transform: translateX(100%);
            transition: transform 0.3s ease;
            overflow-y: auto;
        }

        .mobile-nav.open {
            transform: translateX(0);
        }

        .mobile-nav .nav-link {
            font-size: 18px;
            padding: 14px 0;
            border-bottom: 1px solid var(--border);
            display: block;
        }

        .mobile-nav .nav-link.active {
            color: var(--primary);
            font-weight: 600;
        }

        .mobile-nav .lang-toggle {
            margin-top: 16px;
            align-self: flex-start;
            font-size: 14px;
        }

        .mobile-nav .btn {
            margin-top: 20px;
            width: 100%;
        }

        @media (min-width: 1024px) {
            .nav-desktop {
                display: flex;
            }
            .hamburger {
                display: none;
            }
            .mobile-nav {
                display: none;
            }
        }

        @media (max-width: 1023px) {
            .nav-actions .lang-toggle,
            .nav-actions .btn {
                display: none;
            }
        }

        /* Breadcrumb */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--muted);
            margin-bottom: 16px;
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: var(--muted);
            transition: color 0.2s ease;
        }

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

        .breadcrumb .separator {
            color: #94A3B8;
        }

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

        /* Section general */
        .section {
            padding: 56px 0;
        }

        @media (min-width: 768px) {
            .section {
                padding: 72px 0;
            }
        }

        .section-alt {
            background: #fff;
        }

        .section-surface {
            background: var(--surface);
        }

        .section-title {
            font-size: 24px;
            font-weight: 700;
            color: var(--dark);
            line-height: 1.4;
            letter-spacing: -0.3px;
            margin-bottom: 12px;
        }

        @media (min-width: 768px) {
            .section-title {
                font-size: 30px;
            }
        }

        .section-subtitle {
            font-size: 16px;
            color: var(--muted);
            line-height: 1.75;
        }

        /* Card */
        .card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            transition: all 0.3s ease;
            overflow: hidden;
        }

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

        /* Category header card */
        .cat-header {
            background: #fff;
            border-radius: var(--radius-card);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-card);
            padding: 32px 24px;
            margin-bottom: 24px;
        }

        @media (min-width: 768px) {
            .cat-header {
                padding: 40px 36px;
            }
        }

        .cat-header h1 {
            font-size: 28px;
            font-weight: 700;
            line-height: 1.35;
            letter-spacing: -0.3px;
            margin-bottom: 16px;
            color: var(--dark);
        }

        @media (min-width: 768px) {
            .cat-header h1 {
                font-size: 38px;
            }
        }

        .cat-header-desc {
            font-size: 15px;
            color: var(--muted);
            line-height: 1.8;
            max-width: 800px;
        }

        /* Filter tags */
        .filter-bar {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 14px;
            padding: 16px 20px;
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
            margin-bottom: 28px;
            box-shadow: 0 2px 8px rgba(15, 23, 42, 0.04);
        }

        .filter-label {
            font-size: 14px;
            font-weight: 600;
            color: var(--muted);
            margin-right: 4px;
            white-space: nowrap;
        }

        .filter-tag {
            display: inline-flex;
            align-items: center;
            padding: 6px 14px;
            font-size: 13px;
            font-weight: 500;
            color: var(--muted);
            background: #F8FAFC;
            border: 1px solid var(--border);
            border-radius: 999px;
            transition: all 0.2s ease;
            cursor: pointer;
            white-space: nowrap;
        }

        .filter-tag:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: #EEF2FF;
        }

        .filter-tag.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            font-weight: 500;
        }

        /* News list */
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 18px;
        }

        .news-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 24px;
            display: flex;
            flex-direction: column;
            gap: 10px;
            transition: all 0.3s ease;
        }

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

        @media (min-width: 768px) {
            .news-card {
                flex-direction: row;
                align-items: flex-start;
                gap: 20px;
                padding: 28px;
            }
        }

        .news-card-img {
            width: 100%;
            aspect-ratio: 16/9;
            border-radius: 12px;
            overflow: hidden;
            flex-shrink: 0;
        }

        @media (min-width: 768px) {
            .news-card-img {
                width: 200px;
                aspect-ratio: 16/10;
            }
        }

        .news-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .news-card:hover .news-card-img img {
            transform: scale(1.03);
        }

        .news-card-body {
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .news-card-meta {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
            font-size: 13px;
            color: var(--muted);
        }

        .news-card-date {
            font-weight: 500;
            color: var(--muted);
            background: #F1F5F9;
            padding: 3px 10px;
            border-radius: 6px;
        }

        .news-card-tag {
            font-weight: 500;
            color: var(--primary);
            background: #EEF2FF;
            padding: 3px 10px;
            border-radius: 6px;
        }

        .news-card h3 {
            font-size: 18px;
            font-weight: 700;
            line-height: 1.45;
            color: var(--dark);
            transition: color 0.2s ease;
        }

        .news-card h3 a:hover {
            color: var(--primary);
        }

        .news-card-summary {
            font-size: 14.5px;
            color: var(--muted);
            line-height: 1.75;
            flex: 1;
        }

        .news-card .read-more {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            transition: all 0.2s ease;
            align-self: flex-start;
        }

        .news-card .read-more:hover {
            color: var(--primary-dark);
            gap: 10px;
        }

        .news-card .read-more svg {
            width: 16px;
            height: 16px;
            transition: transform 0.2s ease;
        }

        .news-card .read-more:hover svg {
            transform: translateX(2px);
        }

        /* View more */
        .view-more-wrapper {
            text-align: center;
            margin-top: 28px;
        }

        .view-more-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 15px;
            font-weight: 600;
            color: var(--primary);
            background: #fff;
            border: 1.5px solid var(--primary);
            border-radius: 999px;
            padding: 12px 28px;
            transition: all 0.3s ease;
        }

        .view-more-btn:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 18px rgba(45, 91, 255, 0.25);
        }

        /* Topic cards */
        .topic-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 18px;
        }

        @media (min-width: 640px) {
            .topic-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (min-width: 1024px) {
            .topic-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }

        .topic-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: all 0.3s ease;
            display: flex;
            flex-direction: column;
        }

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

        .topic-card-img {
            aspect-ratio: 16/9;
            overflow: hidden;
        }

        .topic-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

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

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

        .topic-card-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--accent-dark);
            background: #ECFDF5;
            padding: 3px 10px;
            border-radius: 6px;
            align-self: flex-start;
        }

        .topic-card h3 {
            font-size: 17px;
            font-weight: 700;
            line-height: 1.45;
            color: var(--dark);
        }

        .topic-card p {
            font-size: 14px;
            color: var(--muted);
            line-height: 1.7;
            flex: 1;
        }

        .topic-card-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap 0.2s ease;
        }

        .topic-card-link:hover {
            gap: 10px;
        }

        /* Hot list */
        .hot-list {
            background: #fff;
            border-radius: var(--radius-card);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-card);
            padding: 24px;
        }

        .hot-list-item {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            padding: 14px 0;
            border-bottom: 1px solid var(--border);
            transition: all 0.2s ease;
        }

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

        .hot-list-item:hover {
            padding-left: 6px;
        }

        .hot-rank {
            width: 28px;
            height: 28px;
            background: #F1F5F9;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            font-weight: 700;
            color: var(--muted);
            flex-shrink: 0;
        }

        .hot-rank.top {
            background: #FEF3C7;
            color: #D97706;
        }

        .hot-rank.top-1 {
            background: #FEE2E2;
            color: #DC2626;
        }

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

        .hot-list-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--dark);
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: color 0.2s ease;
        }

        .hot-list-item:hover .hot-list-title {
            color: var(--primary);
        }

        .hot-list-meta {
            font-size: 13px;
            color: #94A3B8;
            margin-top: 2px;
        }

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

        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 14px;
            box-shadow: 0 2px 8px rgba(15, 23, 42, 0.04);
            overflow: hidden;
            transition: all 0.3s ease;
        }

        .faq-item:hover {
            border-color: #CBD5E1;
        }

        .faq-item summary {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding: 18px 20px;
            font-size: 15px;
            font-weight: 600;
            color: var(--dark);
            cursor: pointer;
            list-style: none;
            transition: all 0.2s ease;
            user-select: none;
        }

        .faq-item summary::-webkit-details-marker {
            display: none;
        }

        .faq-item summary:hover {
            color: var(--primary);
        }

        .faq-icon {
            width: 22px;
            height: 22px;
            border-radius: 50%;
            background: #F1F5F9;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            font-weight: 700;
            color: var(--muted);
            flex-shrink: 0;
            transition: all 0.3s ease;
        }

        .faq-item[open] .faq-icon {
            background: var(--primary);
            color: #fff;
            transform: rotate(45deg);
        }

        .faq-item .faq-answer {
            padding: 0 20px 18px;
            font-size: 14.5px;
            color: var(--muted);
            line-height: 1.75;
        }

        /* Back home section */
        .back-home-section {
            background: #fff;
            border-radius: var(--radius-card);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-card);
            padding: 28px;
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
            gap: 16px;
        }

        @media (min-width: 768px) {
            .back-home-section {
                flex-direction: row;
                text-align: left;
                justify-content: space-between;
                padding: 32px 36px;
            }
        }

        .back-home-section h2 {
            font-size: 20px;
            font-weight: 700;
            color: var(--dark);
        }

        .back-home-section p {
            font-size: 14.5px;
            color: var(--muted);
        }

        .related-links {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
        }

        @media (min-width: 768px) {
            .related-links {
                justify-content: flex-start;
            }
        }

        .related-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 500;
            color: var(--muted);
            background: #F8FAFC;
            border: 1px solid var(--border);
            border-radius: 999px;
            padding: 6px 14px;
            transition: all 0.2s ease;
        }

        .related-link:hover {
            color: var(--primary);
            border-color: var(--primary);
            background: #EEF2FF;
        }

        /* Footer */
        .site-footer {
            background: var(--dark);
            color: #CBD5E1;
            padding: 48px 0 24px;
            margin-top: 0;
        }

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

        @media (min-width: 640px) {
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (min-width: 1024px) {
            .footer-grid {
                grid-template-columns: 2fr 1fr 1fr 1fr;
                gap: 40px;
            }
        }

        .footer-brand-desc {
            font-size: 14px;
            color: #94A3B8;
            line-height: 1.7;
            margin-top: 12px;
            max-width: 320px;
        }

        .footer-col-title {
            font-size: 15px;
            font-weight: 600;
            color: #F1F5F9;
            margin-bottom: 12px;
        }

        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-link {
            font-size: 14px;
            color: #94A3B8;
            transition: color 0.2s ease;
        }

        .footer-link:hover {
            color: #60A5FA;
        }

        .footer-bottom {
            border-top: 1px solid #1E293B;
            padding-top: 20px;
            display: flex;
            flex-direction: column;
            gap: 8px;
            align-items: center;
            font-size: 13px;
            color: #94A3B8;
        }

        @media (min-width: 640px) {
            .footer-bottom {
                flex-direction: row;
                justify-content: space-between;
                align-items: center;
            }
        }

        .footer-bottom-links {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .footer-bottom-links a {
            color: #94A3B8;
            transition: color 0.2s ease;
        }

        .footer-bottom-links a:hover {
            color: #60A5FA;
        }

        .footer-bottom-links span {
            color: #475569;
        }

/* roulang page: category2 */
:root {
            --primary: #2D5BFF;
            --primary-dark: #1E46CC;
            --accent: #10B981;
            --accent-dark: #0DA678;
            --warning: #F59E0B;
            --dark: #0F172A;
            --muted: #475569;
            --surface: #F6F8FC;
            --border: #E8EDF5;
            --card: #FFFFFF;
            --radius-btn: 12px;
            --radius-card: 16px;
            --shadow-card: 0 4px 16px rgba(15, 23, 42, 0.06);
            --shadow-card-hover: 0 10px 28px rgba(15, 23, 42, 0.10);
        }

        /* roulang page: replays */
        :root {
            --primary: #2D5BFF;
            --primary-dark: #1E46CC;
            --accent: #10B981;
            --accent-dark: #0DA678;
            --warning: #F59E0B;
            --dark: #0F172A;
            --muted: #475569;
            --surface: #F6F8FC;
            --border: #E8EDF5;
            --card: #FFFFFF;
            --radius-btn: 12px;
            --radius-card: 16px;
            --shadow-card: 0 4px 16px rgba(15, 23, 42, 0.06);
            --shadow-card-hover: 0 10px 28px rgba(15, 23, 42, 0.10);
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            background-color: var(--surface);
            color: var(--dark);
            line-height: 1.75;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            margin: 0;
            padding: 0;
        }

        body.menu-open {
            overflow: hidden;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.2s ease;
        }

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

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }

        button {
            cursor: pointer;
            border: none;
            background: none;
        }

        button:focus,
        a:focus,
        input:focus,
        select:focus,
        textarea:focus {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 4px;
        }

        button:active,
        a:active {
            transform: scale(0.98);
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        @media (min-width: 1024px) {
            .container {
                padding-left: 32px;
                padding-right: 32px;
            }
        }

        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border);
            height: 68px;
            display: flex;
            align-items: center;
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            gap: 16px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 22px;
            color: var(--dark);
            letter-spacing: -0.5px;
            white-space: nowrap;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 34px;
            height: 34px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            font-weight: 800;
            flex-shrink: 0;
        }

        .logo-text {
            color: var(--dark);
        }

        .logo-text span {
            color: var(--primary);
        }

        .nav-desktop {
            display: none;
            align-items: center;
            gap: 24px;
            flex: 1;
            justify-content: center;
        }

        .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--muted);
            padding: 8px 4px;
            position: relative;
            transition: color 0.2s ease;
            white-space: nowrap;
        }

        .nav-link:hover {
            color: var(--primary);
        }

        .nav-link.active {
            color: var(--primary);
            font-weight: 600;
        }

        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 4px;
            right: 4px;
            height: 3px;
            background: var(--primary);
            border-radius: 999px;
        }

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

        .lang-toggle {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 6px 12px;
            border-radius: 999px;
            border: 1px solid var(--border);
            background: #fff;
            font-size: 13px;
            font-weight: 500;
            color: var(--muted);
            transition: all 0.2s ease;
            cursor: pointer;
            white-space: nowrap;
        }

        .lang-toggle:hover {
            border-color: var(--primary);
            color: var(--primary);
        }

        .lang-toggle .active-lang {
            color: var(--primary);
            font-weight: 700;
        }

        .lang-separator {
            color: var(--border);
            font-size: 12px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border-radius: var(--radius-btn);
            padding: 10px 22px;
            font-size: 15px;
            font-weight: 600;
            transition: all 0.25s ease;
            white-space: nowrap;
            line-height: 1.5;
            cursor: pointer;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 12px rgba(45, 91, 255, 0.25);
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            box-shadow: 0 6px 20px rgba(45, 91, 255, 0.35);
            transform: translateY(-1px);
        }

        .btn-outline {
            background: #fff;
            color: var(--primary);
            border: 1.5px solid var(--primary);
        }

        .btn-outline:hover {
            background: #EEF2FF;
            transform: translateY(-1px);
        }

        .btn-accent {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 4px 12px rgba(16, 185, 129, 0.2);
        }

        .btn-accent:hover {
            background: var(--accent-dark);
            box-shadow: 0 6px 20px rgba(16, 185, 129, 0.3);
            transform: translateY(-1px);
        }

        .btn-sm {
            padding: 8px 16px;
            font-size: 14px;
            border-radius: 10px;
        }

        .btn-lg {
            padding: 14px 28px;
            font-size: 16px;
            border-radius: 14px;
        }

        .btn-xs {
            padding: 6px 14px;
            font-size: 13px;
            border-radius: 8px;
        }

        .hamburger {
            display: flex;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            background: transparent;
            border: none;
            cursor: pointer;
            flex-shrink: 0;
            z-index: 60;
        }

        .hamburger span {
            display: block;
            width: 24px;
            height: 2.5px;
            background: var(--dark);
            border-radius: 999px;
            transition: all 0.3s ease;
        }

        .hamburger.menu-open span:nth-child(1) {
            transform: translateY(7.5px) rotate(45deg);
        }

        .hamburger.menu-open span:nth-child(2) {
            opacity: 0;
        }

        .hamburger.menu-open span:nth-child(3) {
            transform: translateY(-7.5px) rotate(-45deg);
        }

        .mobile-menu {
            display: none;
            position: fixed;
            top: 68px;
            left: 0;
            right: 0;
            bottom: 0;
            background: #fff;
            z-index: 40;
            padding: 24px;
            flex-direction: column;
            gap: 8px;
            overflow-y: auto;
            border-top: 1px solid var(--border);
        }

        .mobile-menu.open {
            display: flex;
        }

        .mobile-menu .nav-link {
            font-size: 18px;
            padding: 14px 4px;
            border-bottom: 1px solid var(--border);
            display: block;
        }

        .mobile-menu .nav-link.active {
            background: #EEF2FF;
            border-radius: 10px;
            padding-left: 12px;
        }

        .mobile-menu .lang-toggle {
            margin-top: 12px;
            width: fit-content;
        }

        .mobile-menu .btn {
            margin-top: 12px;
            width: 100%;
        }

        @media (min-width: 1024px) {
            .nav-desktop {
                display: flex;
            }
            .hamburger {
                display: none;
            }
            .mobile-menu {
                display: none !important;
            }
            .lang-toggle {
                display: inline-flex;
            }
        }

        @media (max-width: 1023px) {
            .lang-toggle {
                display: none;
            }
            .nav-actions .btn-sm {
                display: none;
            }
            .mobile-menu .lang-toggle {
                display: inline-flex;
            }
            .mobile-menu .btn-sm {
                display: inline-flex;
                width: 100%;
            }
        }

        /* Page breadcrumb */
        .page-breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--muted);
            padding: 28px 0 0;
            flex-wrap: wrap;
        }

        .page-breadcrumb a {
            color: var(--muted);
            transition: color 0.2s ease;
        }

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

        .page-breadcrumb .separator {
            color: var(--border);
            font-size: 12px;
        }

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

        /* Page header */
        .page-header {
            padding: 32px 0 24px;
        }

        .page-header h1 {
            font-size: 28px;
            line-height: 1.4;
            font-weight: 700;
            color: var(--dark);
            letter-spacing: -0.5px;
            margin: 0 0 16px;
        }

        .page-header .page-description {
            font-size: 16px;
            line-height: 1.9;
            color: var(--muted);
            max-width: 860px;
        }

        /* Section common */
        .section {
            padding: 48px 0;
        }

        .section-title {
            font-size: 22px;
            font-weight: 700;
            color: var(--dark);
            letter-spacing: -0.3px;
            margin: 0 0 24px;
            line-height: 1.4;
        }

        .section-subtitle {
            font-size: 15px;
            color: var(--muted);
            margin: -16px 0 28px;
        }

        /* Filter tags */
        .filter-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 32px;
        }

        .filter-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: 999px;
            background: #fff;
            border: 1px solid var(--border);
            font-size: 14px;
            font-weight: 500;
            color: var(--muted);
            cursor: pointer;
            transition: all 0.25s ease;
        }

        .filter-tag:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: #EEF2FF;
        }

        .filter-tag.active {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
            box-shadow: 0 4px 12px rgba(45, 91, 255, 0.2);
        }

        /* Replay cards grid */
        .replay-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
        }

        @media (min-width: 640px) {
            .replay-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (min-width: 1024px) {
            .replay-grid {
                grid-template-columns: 1fr 1fr 1fr;
                gap: 24px;
            }
        }

        .replay-card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all 0.3s ease;
            display: flex;
            flex-direction: column;
        }

        .replay-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
            border-color: #D8E0F0;
        }

        .replay-card .card-thumb {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16/9;
            background: #E8EDF5;
        }

        .replay-card .card-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .replay-card:hover .card-thumb img {
            transform: scale(1.03);
        }

        .replay-card .card-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(6px);
            padding: 4px 12px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 600;
            color: var(--primary);
            border: 1px solid rgba(45, 91, 255, 0.2);
        }

        .replay-card .card-badge.live {
            color: #fff;
            background: var(--accent);
            border-color: var(--accent);
        }

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

        .replay-card .card-meta {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 13px;
            color: var(--muted);
            margin-bottom: 10px;
            flex-wrap: wrap;
        }

        .replay-card .card-meta .dot {
            width: 4px;
            height: 4px;
            border-radius: 50%;
            background: var(--border);
            display: inline-block;
        }

        .replay-card .card-title {
            font-size: 17px;
            font-weight: 700;
            color: var(--dark);
            line-height: 1.5;
            margin: 0 0 10px;
            letter-spacing: -0.2px;
        }

        .replay-card .card-summary {
            font-size: 14px;
            color: var(--muted);
            line-height: 1.8;
            margin: 0 0 16px;
            flex: 1;
        }

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

        .replay-card .card-link:hover {
            gap: 10px;
        }

        /* View more */
        .view-more-wrapper {
            display: flex;
            justify-content: center;
            margin-top: 32px;
        }

        /* Topic cards */
        .topic-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
        }

        @media (min-width: 640px) {
            .topic-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (min-width: 1024px) {
            .topic-grid {
                grid-template-columns: 1fr 1fr 1fr;
                gap: 24px;
            }
        }

        .topic-card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all 0.3s ease;
            cursor: pointer;
        }

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

        .topic-card .topic-thumb {
            aspect-ratio: 16/9;
            overflow: hidden;
            background: #E8EDF5;
        }

        .topic-card .topic-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

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

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

        .topic-card .topic-tag {
            display: inline-block;
            padding: 3px 10px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 500;
            background: #EEF2FF;
            color: var(--primary);
            margin-bottom: 10px;
        }

        .topic-card .topic-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--dark);
            line-height: 1.5;
        }

        /* Ranking + subscribe combined */
        .ranking-section {
            background: var(--dark);
            border-radius: var(--radius-card);
            padding: 36px 28px;
            color: #F1F5F9;
        }

        .ranking-section .section-title {
            color: #fff;
            margin-bottom: 20px;
        }

        .ranking-list {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .ranking-list li {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 12px 16px;
            background: rgba(255, 255, 255, 0.05);
            border-radius: 12px;
            transition: background 0.25s ease;
        }

        .ranking-list li:hover {
            background: rgba(255, 255, 255, 0.1);
        }

        .ranking-list .rank-num {
            font-size: 18px;
            font-weight: 800;
            color: var(--primary);
            width: 36px;
            flex-shrink: 0;
        }

        .ranking-list .rank-num.top1 {
            color: var(--warning);
        }

        .ranking-list .rank-num.top2 {
            color: #B8C2D9;
        }

        .ranking-list .rank-num.top3 {
            color: #D97706;
        }

        .ranking-list .rank-info {
            flex: 1;
            min-width: 0;
        }

        .ranking-list .rank-title {
            font-size: 15px;
            font-weight: 600;
            color: #F1F5F9;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .ranking-list .rank-views {
            font-size: 13px;
            color: #94A3B8;
        }

        .ranking-cta {
            margin-top: 24px;
            display: flex;
            justify-content: flex-start;
        }

        /* FAQ section */
        .faq-section {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 36px 28px;
        }

        .faq-accordion {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .faq-item {
            border: 1px solid var(--border);
            border-radius: 12px;
            overflow: hidden;
            transition: border-color 0.2s ease;
        }

        .faq-item:hover {
            border-color: #D0D8E8;
        }

        .faq-item.open {
            border-color: var(--primary);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 20px;
            background: #F9FAFC;
            font-size: 15px;
            font-weight: 600;
            color: var(--dark);
            cursor: pointer;
            text-align: left;
            transition: background 0.2s ease;
        }

        .faq-question:hover {
            background: #F0F4FF;
        }

        .faq-question .faq-icon {
            flex-shrink: 0;
            font-size: 18px;
            color: var(--primary);
            transition: transform 0.3s ease;
            font-weight: 700;
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 20px;
            font-size: 14px;
            color: var(--muted);
            line-height: 1.85;
        }

        .faq-item.open .faq-answer {
            max-height: 200px;
            padding: 16px 20px 20px;
        }

        .faq-answer p {
            margin: 0;
        }

        /* Back home section */
        .back-home-section {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 16px;
            text-align: center;
            padding: 48px 0 40px;
        }

        .back-home-section .back-home-title {
            font-size: 20px;
            font-weight: 700;
            color: var(--dark);
        }

        .back-home-section .back-home-sub {
            font-size: 15px;
            color: var(--muted);
            max-width: 480px;
        }

        /* Footer */
        .site-footer {
            background: var(--dark);
            color: #E2E8F0;
            padding: 56px 0 24px;
            margin-top: 48px;
        }

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

        @media (min-width: 640px) {
            .footer-grid {
                grid-template-columns: 2fr 1fr 1fr 1fr;
                gap: 24px;
            }
        }

        .footer-brand-desc {
            font-size: 14px;
            color: #94A3B8;
            line-height: 1.8;
            margin-top: 14px;
            max-width: 320px;
        }

        .footer-col-title {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin: 0 0 16px;
            letter-spacing: 0.3px;
        }

        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-link {
            font-size: 14px;
            color: #94A3B8;
            transition: color 0.2s ease;
        }

        .footer-link:hover {
            color: #fff;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            display: flex;
            flex-direction: column;
            gap: 12px;
            font-size: 13px;
            color: #94A3B8;
        }

        @media (min-width: 640px) {
            .footer-bottom {
                flex-direction: row;
                justify-content: space-between;
                align-items: center;
            }
        }

        .footer-bottom-links {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .footer-bottom-links a {
            color: #94A3B8;
            transition: color 0.2s ease;
        }

        .footer-bottom-links a:hover {
            color: #fff;
        }

        .footer-bottom-links span {
            color: #475569;
        }

        /* Responsive typography */
        @media (max-width: 640px) {
            .page-header h1 {
                font-size: 24px;
            }
            .section-title {
                font-size: 20px;
            }
            .replay-card .card-body {
                padding: 16px;
            }
            .replay-card .card-title {
                font-size: 15px;
            }
            .replay-card .card-summary {
                font-size: 13px;
            }
            .ranking-section {
                padding: 24px 16px;
            }
            .faq-section {
                padding: 24px 16px;
            }
        }

        @media (min-width: 768px) {
            .page-header h1 {
                font-size: 34px;
            }
            .section-title {
                font-size: 26px;
            }
        }

/* roulang page: category5 */
:root {
            --primary: #2D5BFF;
            --primary-dark: #1E46CC;
            --accent: #10B981;
            --accent-dark: #0DA678;
            --warning: #F59E0B;
            --dark: #0F172A;
            --muted: #475569;
            --surface: #F6F8FC;
            --border: #E8EDF5;
            --card: #FFFFFF;
            --radius-btn: 12px;
            --radius-card: 16px;
            --shadow-card: 0 4px 16px rgba(15, 23, 42, 0.06);
            --shadow-card-hover: 0 10px 28px rgba(15, 23, 42, 0.10);
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-sans);
            background-color: var(--surface);
            color: var(--dark);
            line-height: 1.75;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

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

        body.menu-open {
            overflow: hidden;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.2s ease, background 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
        }

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

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }

        button {
            cursor: pointer;
            border: none;
            background: none;
        }

        button:focus,
        a:focus,
        input:focus,
        select:focus,
        textarea:focus {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 4px;
        }

        button:active,
        a:active {
            transform: scale(0.98);
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border);
            height: 68px;
            display: flex;
            align-items: center;
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            gap: 16px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 22px;
            color: var(--dark);
            letter-spacing: -0.5px;
            white-space: nowrap;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 34px;
            height: 34px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            font-weight: 800;
            flex-shrink: 0;
        }

        .logo-text {
            color: var(--dark);
        }

        .logo-text span {
            color: var(--primary);
        }

        .nav-desktop {
            display: none;
            align-items: center;
            gap: 24px;
            flex: 1;
            justify-content: center;
        }

        .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--muted);
            padding: 8px 4px;
            position: relative;
            transition: color 0.2s ease;
            white-space: nowrap;
        }

        .nav-link:hover {
            color: var(--primary);
        }

        .nav-link.active {
            color: var(--primary);
            font-weight: 600;
        }

        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 4px;
            right: 4px;
            height: 3px;
            background: var(--primary);
            border-radius: 999px;
        }

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

        .lang-toggle {
            display: flex;
            align-items: center;
            gap: 4px;
            padding: 6px 12px;
            border: 1.5px solid var(--border);
            border-radius: 999px;
            background: #fff;
            font-size: 13px;
            font-weight: 500;
            color: var(--muted);
            transition: all 0.2s ease;
            cursor: pointer;
            white-space: nowrap;
        }

        .lang-toggle:hover {
            border-color: var(--primary);
            color: var(--primary);
        }

        .lang-toggle .active-lang {
            color: var(--primary);
            font-weight: 600;
        }

        .lang-separator {
            color: var(--border);
            font-size: 12px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border-radius: var(--radius-btn);
            padding: 10px 22px;
            font-size: 15px;
            font-weight: 600;
            transition: all 0.25s ease;
            white-space: nowrap;
            line-height: 1.5;
            cursor: pointer;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 12px rgba(45, 91, 255, 0.25);
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            box-shadow: 0 6px 20px rgba(45, 91, 255, 0.35);
            transform: translateY(-1px);
        }

        .btn-outline {
            background: #fff;
            color: var(--primary);
            border: 1.5px solid var(--primary);
        }

        .btn-outline:hover {
            background: #EEF2FF;
            transform: translateY(-1px);
        }

        .btn-accent {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 4px 12px rgba(16, 185, 129, 0.2);
        }

        .btn-accent:hover {
            background: var(--accent-dark);
            box-shadow: 0 6px 20px rgba(16, 185, 129, 0.3);
            transform: translateY(-1px);
        }

        .btn-sm {
            padding: 8px 16px;
            font-size: 14px;
            border-radius: 10px;
        }

        .btn-lg {
            padding: 14px 28px;
            font-size: 16px;
            border-radius: 14px;
        }

        .hamburger {
            display: flex;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            background: transparent;
            border: none;
            cursor: pointer;
            flex-shrink: 0;
            z-index: 60;
        }

        .hamburger span {
            display: block;
            width: 24px;
            height: 2.5px;
            background: var(--dark);
            border-radius: 999px;
            transition: all 0.3s ease;
        }

        .hamburger.active span:nth-child(1) {
            transform: translateY(7.5px) rotate(45deg);
        }

        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }

        .hamburger.active span:nth-child(3) {
            transform: translateY(-7.5px) rotate(-45deg);
        }

        .mobile-menu {
            display: none;
            position: fixed;
            top: 68px;
            left: 0;
            right: 0;
            bottom: 0;
            background: #fff;
            z-index: 45;
            padding: 24px 20px;
            overflow-y: auto;
            flex-direction: column;
            gap: 8px;
            box-shadow: 0 20px 40px rgba(15, 23, 42, 0.08);
        }

        .mobile-menu.open {
            display: flex;
        }

        .mobile-menu .nav-link {
            padding: 14px 16px;
            font-size: 17px;
            border-bottom: 1px solid var(--border);
            color: var(--dark);
        }

        .mobile-menu .nav-link.active {
            color: var(--primary);
            font-weight: 600;
        }

        .mobile-menu .nav-link.active::after {
            display: none;
        }

        .mobile-menu .lang-toggle {
            align-self: flex-start;
            margin-top: 8px;
        }

        .mobile-menu .btn {
            width: 100%;
            margin-top: 12px;
        }

        /* Breadcrumb */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--muted);
            flex-wrap: wrap;
            margin-bottom: 16px;
        }

        .breadcrumb a {
            color: var(--primary);
            font-weight: 500;
        }

        .breadcrumb a:hover {
            color: var(--primary-dark);
            text-decoration: underline;
        }

        .breadcrumb .separator {
            color: var(--border);
            user-select: none;
        }

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

        /* Category Header */
        .category-header {
            padding: 40px 0 28px;
            background: #fff;
            border-bottom: 1px solid var(--border);
        }

        .category-header h1 {
            font-size: 30px;
            font-weight: 700;
            color: var(--dark);
            line-height: 1.35;
            margin: 0 0 14px;
            letter-spacing: -0.5px;
        }

        .category-header .category-desc {
            font-size: 16px;
            color: var(--muted);
            line-height: 1.85;
            max-width: 820px;
            margin: 0;
        }

        /* Filter Bar */
        .filter-bar {
            padding: 16px 0;
            background: #fff;
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 68px;
            z-index: 35;
        }

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

        .filter-bar .filter-label {
            font-size: 14px;
            font-weight: 600;
            color: var(--dark);
            margin-right: 4px;
            white-space: nowrap;
        }

        .filter-chip {
            padding: 6px 16px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 500;
            background: var(--surface);
            color: var(--muted);
            border: 1px solid var(--border);
            cursor: pointer;
            transition: all 0.2s ease;
            white-space: nowrap;
        }

        .filter-chip:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: #EEF2FF;
        }

        .filter-chip.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            font-weight: 600;
        }

        /* Section Base */
        .section {
            padding: 56px 0;
        }

        .section-alt {
            background: #fff;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .section-title {
            font-size: 26px;
            font-weight: 700;
            color: var(--dark);
            margin: 0 0 8px;
            letter-spacing: -0.5px;
            line-height: 1.35;
        }

        .section-subtitle {
            font-size: 15px;
            color: var(--muted);
            margin: 0 0 32px;
            line-height: 1.8;
        }

        /* Guide Cards */
        .guide-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
            margin-top: 28px;
        }

        .guide-card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            display: flex;
            flex-direction: column;
            transition: all 0.3s ease;
        }

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

        .guide-card-image {
            width: 100%;
            height: 180px;
            object-fit: cover;
            background: var(--surface);
        }

        .guide-card-body {
            padding: 20px 22px 22px;
            display: flex;
            flex-direction: column;
            gap: 10px;
            flex: 1;
        }

        .guide-card-meta {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
            font-size: 13px;
            color: var(--muted);
        }

        .guide-card-tag {
            padding: 3px 10px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 600;
            background: #EEF2FF;
            color: var(--primary);
        }

        .guide-card-tag.green {
            background: #ECFDF5;
            color: var(--accent-dark);
        }

        .guide-card-tag.orange {
            background: #FFFBEB;
            color: #B45309;
        }

        .guide-card-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--dark);
            line-height: 1.45;
            margin: 0;
            letter-spacing: -0.3px;
        }

        .guide-card-title a {
            color: inherit;
        }

        .guide-card-title a:hover {
            color: var(--primary);
        }

        .guide-card-summary {
            font-size: 14px;
            color: var(--muted);
            line-height: 1.75;
            margin: 0;
            flex: 1;
        }

        .guide-card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-top: 6px;
            padding-top: 14px;
            border-top: 1px solid var(--border);
        }

        .guide-card-date {
            font-size: 13px;
            color: var(--muted);
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .read-more-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: all 0.2s ease;
        }

        .read-more-link:hover {
            color: var(--primary-dark);
            gap: 8px;
        }

        /* Load More */
        .load-more-wrapper {
            display: flex;
            justify-content: center;
            margin-top: 36px;
        }

        /* Related Topics */
        .related-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
            margin-top: 28px;
        }

        .related-card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 22px;
            transition: all 0.3s ease;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

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

        .related-card-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: #EEF2FF;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
        }

        .related-card-title {
            font-size: 17px;
            font-weight: 700;
            color: var(--dark);
            margin: 0;
            line-height: 1.4;
        }

        .related-card-desc {
            font-size: 14px;
            color: var(--muted);
            line-height: 1.7;
            margin: 0;
        }

        .related-card-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            align-self: flex-start;
        }

        .related-card-link:hover {
            color: var(--primary-dark);
        }

        /* Data Module */
        .data-strip {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
            margin-top: 28px;
        }

        .data-item {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 22px;
            text-align: center;
            box-shadow: var(--shadow-card);
            transition: all 0.3s ease;
        }

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

        .data-number {
            font-size: 32px;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -1px;
            line-height: 1.2;
        }

        .data-number.green {
            color: var(--accent-dark);
        }

        .data-number.orange {
            color: #D97706;
        }

        .data-label {
            font-size: 14px;
            color: var(--muted);
            margin-top: 6px;
            line-height: 1.5;
        }

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            margin-top: 28px;
        }

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

        .faq-item:hover {
            box-shadow: var(--shadow-card-hover);
        }

        .faq-question {
            width: 100%;
            padding: 18px 22px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            font-size: 16px;
            font-weight: 600;
            color: var(--dark);
            text-align: left;
            cursor: pointer;
            transition: all 0.2s ease;
        }

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

        .faq-question .faq-arrow {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--surface);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            color: var(--muted);
            transition: all 0.3s ease;
        }

        .faq-item.open .faq-question .faq-arrow {
            background: var(--primary);
            color: #fff;
            transform: rotate(180deg);
        }

        .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 20px;
        }

        .faq-answer p {
            font-size: 15px;
            color: var(--muted);
            line-height: 1.8;
            margin: 0;
        }

        /* Back to Home */
        .back-home-section {
            padding: 48px 0 72px;
        }

        .back-home-card {
            background: linear-gradient(135deg, #EEF2FF, #ECFDF5);
            border-radius: var(--radius-card);
            padding: 36px 28px;
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
            gap: 14px;
        }

        .back-home-card h2 {
            font-size: 22px;
            font-weight: 700;
            color: var(--dark);
            margin: 0;
        }

        .back-home-card p {
            font-size: 15px;
            color: var(--muted);
            margin: 0;
            max-width: 480px;
            line-height: 1.7;
        }

        .back-home-actions {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            justify-content: center;
            margin-top: 8px;
        }

        /* Footer */
        .site-footer {
            background: var(--dark);
            color: #CBD5E1;
            padding: 56px 0 24px;
        }

        .site-footer .container {
            display: flex;
            flex-direction: column;
            gap: 36px;
        }

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

        .footer-brand-desc {
            font-size: 14px;
            color: #94A3B8;
            line-height: 1.8;
            margin: 12px 0 0;
            max-width: 300px;
        }

        .footer-col-title {
            font-size: 15px;
            font-weight: 600;
            color: #F1F5F9;
            margin: 0 0 14px;
        }

        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-link {
            font-size: 14px;
            color: #94A3B8;
            transition: color 0.2s ease;
        }

        .footer-link:hover {
            color: #60A5FA;
        }

        .footer-bottom {
            display: flex;
            flex-direction: column;
            gap: 12px;
            padding-top: 24px;
            border-top: 1px solid #1E293B;
            font-size: 13px;
            color: #64748B;
            text-align: center;
        }

        .footer-bottom-links {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
        }

        .footer-bottom-links a {
            color: #94A3B8;
            font-weight: 500;
            transition: color 0.2s ease;
        }

        .footer-bottom-links a:hover {
            color: #60A5FA;
        }

        /* Responsive */
        @media (min-width: 640px) {
            .container {
                padding-left: 24px;
                padding-right: 24px;
            }

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

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

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

            .category-header h1 {
                font-size: 34px;
            }
        }

        @media (min-width: 768px) {
            .nav-desktop {
                display: flex;
            }

            .hamburger {
                display: none;
            }

            .mobile-menu {
                display: none !important;
            }

            .container {
                padding-left: 28px;
                padding-right: 28px;
            }

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

            .footer-grid {
                grid-template-columns: 2fr 1fr 1fr 1fr;
            }

            .footer-bottom {
                flex-direction: row;
                justify-content: space-between;
                text-align: left;
            }
        }

        @media (min-width: 1024px) {
            .container {
                padding-left: 32px;
                padding-right: 32px;
            }

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

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

            .category-header h1 {
                font-size: 38px;
            }

            .section-title {
                font-size: 28px;
            }
        }

        @media (max-width: 519px) {
            .category-header h1 {
                font-size: 26px;
            }

            .section {
                padding: 40px 0;
            }

            .guide-card-image {
                height: 150px;
            }

            .guide-card-body {
                padding: 16px 18px 18px;
            }

            .filter-bar .container {
                gap: 6px;
            }

            .filter-chip {
                padding: 5px 12px;
                font-size: 12px;
            }

            .data-number {
                font-size: 26px;
            }

            .back-home-card {
                padding: 28px 18px;
            }

            .footer-bottom {
                flex-direction: column;
                gap: 10px;
            }
        }

/* roulang page: category4 */
:root {
            --primary: #2D5BFF;
            --primary-dark: #1E46CC;
            --accent: #10B981;
            --accent-dark: #0DA678;
            --warning: #F59E0B;
            --dark: #0F172A;
            --muted: #475569;
            --surface: #F6F8FC;
            --border: #E8EDF5;
            --card: #FFFFFF;
            --radius-btn: 12px;
            --radius-card: 16px;
            --shadow-card: 0 4px 16px rgba(15, 23, 42, 0.06);
            --shadow-card-hover: 0 10px 28px rgba(15, 23, 42, 0.10);
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            background-color: var(--surface);
            color: var(--dark);
            line-height: 1.75;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body.menu-open {
            overflow: hidden;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.2s ease;
        }

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

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }

        button {
            cursor: pointer;
            border: none;
            background: none;
        }

        button:focus,
        a:focus,
        input:focus,
        select:focus,
        textarea:focus {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 4px;
        }

        button:active,
        a:active {
            transform: scale(0.98);
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border);
            height: 68px;
            display: flex;
            align-items: center;
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            gap: 16px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 22px;
            color: var(--dark);
            letter-spacing: -0.5px;
            white-space: nowrap;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 34px;
            height: 34px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            font-weight: 800;
            flex-shrink: 0;
        }

        .logo-text {
            color: var(--dark);
        }
        .logo-text span {
            color: var(--primary);
        }

        .nav-desktop {
            display: none;
            align-items: center;
            gap: 24px;
            flex: 1;
            justify-content: center;
        }

        .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--muted);
            padding: 8px 4px;
            position: relative;
            transition: color 0.2s ease;
            white-space: nowrap;
        }

        .nav-link:hover {
            color: var(--primary);
        }
        .nav-link.active {
            color: var(--primary);
            font-weight: 600;
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 4px;
            right: 4px;
            height: 3px;
            background: var(--primary);
            border-radius: 999px;
        }

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

        .lang-toggle {
            display: flex;
            align-items: center;
            gap: 4px;
            font-size: 13px;
            font-weight: 500;
            color: var(--muted);
            border: 1.5px solid var(--border);
            border-radius: 999px;
            padding: 6px 12px;
            background: #fff;
            transition: border-color 0.2s ease, color 0.2s ease;
            white-space: nowrap;
        }
        .lang-toggle:hover {
            border-color: var(--primary);
            color: var(--primary);
        }
        .lang-toggle .active-lang {
            color: var(--primary);
            font-weight: 600;
        }
        .lang-separator {
            color: var(--border);
            font-size: 12px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border-radius: var(--radius-btn);
            padding: 10px 22px;
            font-size: 15px;
            font-weight: 600;
            transition: all 0.25s ease;
            white-space: nowrap;
            line-height: 1.5;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 12px rgba(45, 91, 255, 0.25);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            box-shadow: 0 6px 20px rgba(45, 91, 255, 0.35);
            transform: translateY(-1px);
        }
        .btn-outline {
            background: #fff;
            color: var(--primary);
            border: 1.5px solid var(--primary);
        }
        .btn-outline:hover {
            background: #EEF2FF;
            transform: translateY(-1px);
        }
        .btn-accent {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 4px 12px rgba(16, 185, 129, 0.2);
        }
        .btn-accent:hover {
            background: var(--accent-dark);
            box-shadow: 0 6px 20px rgba(16, 185, 129, 0.3);
            transform: translateY(-1px);
        }
        .btn-sm {
            padding: 8px 16px;
            font-size: 14px;
            border-radius: 10px;
        }
        .btn-lg {
            padding: 14px 28px;
            font-size: 16px;
            border-radius: 14px;
        }

        .hamburger {
            display: flex;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            background: transparent;
            border: none;
            cursor: pointer;
            flex-shrink: 0;
            z-index: 60;
        }
        .hamburger span {
            display: block;
            width: 24px;
            height: 2.5px;
            background: var(--dark);
            border-radius: 999px;
            transition: transform 0.3s ease, opacity 0.3s ease;
        }
        .hamburger[aria-expanded="true"] span:nth-child(1) {
            transform: translateY(7.5px) rotate(45deg);
        }
        .hamburger[aria-expanded="true"] span:nth-child(2) {
            opacity: 0;
        }
        .hamburger[aria-expanded="true"] span:nth-child(3) {
            transform: translateY(-7.5px) rotate(-45deg);
        }

        /* Mobile nav drawer */
        .mobile-nav-overlay {
            position: fixed;
            inset: 0;
            background: rgba(15, 23, 42, 0.45);
            z-index: 54;
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.3s ease;
        }
        .mobile-nav-overlay.open {
            opacity: 1;
            pointer-events: auto;
        }

        .mobile-nav-drawer {
            position: fixed;
            top: 0;
            right: -320px;
            width: 280px;
            max-width: 85vw;
            height: 100vh;
            background: #fff;
            z-index: 55;
            padding: 20px;
            box-shadow: -8px 0 24px rgba(15, 23, 42, 0.12);
            transition: right 0.35s cubic-bezier(0.22, 1, 0.36, 1);
            overflow-y: auto;
        }
        .mobile-nav-drawer.open {
            right: 0;
        }
        .mobile-nav-drawer .logo {
            margin-bottom: 20px;
        }
        .mobile-nav-links {
            display: flex;
            flex-direction: column;
            gap: 6px;
            margin-bottom: 20px;
        }
        .mobile-nav-links a {
            font-size: 16px;
            font-weight: 500;
            color: var(--dark);
            padding: 10px 12px;
            border-radius: 10px;
            transition: background 0.2s ease, color 0.2s ease;
        }
        .mobile-nav-links a:hover {
            background: var(--surface);
            color: var(--primary);
        }
        .mobile-nav-links a.active {
            background: #EEF2FF;
            color: var(--primary);
            font-weight: 600;
        }
        .mobile-nav-actions {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        /* Section common */
        .section {
            padding: 56px 0;
        }
        .section-sm {
            padding: 40px 0;
        }
        .section-surface {
            background: #fff;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }
        .section-title {
            font-size: 26px;
            font-weight: 700;
            color: var(--dark);
            letter-spacing: -0.5px;
            line-height: 1.35;
            margin-bottom: 8px;
        }
        .section-subtitle {
            font-size: 15px;
            color: var(--muted);
            max-width: 720px;
            line-height: 1.8;
        }

        /* Breadcrumb */
        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 14px;
            color: var(--muted);
            margin-bottom: 16px;
        }
        .breadcrumb a {
            color: var(--muted);
            transition: color 0.2s ease;
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb-separator {
            color: #94A3B8;
            font-size: 12px;
        }
        .breadcrumb .current {
            color: var(--primary);
            font-weight: 600;
        }

        /* Category header */
        .category-header {
            background: linear-gradient(180deg, #FFFFFF 0%, #F6F8FC 100%);
            border-bottom: 1px solid var(--border);
            padding: 40px 0 48px;
        }
        .category-header h1 {
            font-size: 32px;
            font-weight: 700;
            color: var(--dark);
            letter-spacing: -0.5px;
            line-height: 1.3;
            margin-bottom: 12px;
        }
        .category-header .category-desc {
            font-size: 15px;
            color: var(--muted);
            max-width: 820px;
            line-height: 1.85;
        }

        /* Filter bar */
        .filter-bar {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 10px;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 16px 20px;
            box-shadow: 0 2px 8px rgba(15, 23, 42, 0.04);
        }
        .filter-label {
            font-size: 14px;
            font-weight: 600;
            color: var(--dark);
            white-space: nowrap;
            margin-right: 4px;
        }
        .filter-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 500;
            color: var(--muted);
            background: #fff;
            border: 1.5px solid var(--border);
            border-radius: 999px;
            padding: 6px 16px;
            transition: all 0.25s ease;
            white-space: nowrap;
        }
        .filter-tag:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: #EEF2FF;
        }
        .filter-tag.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            box-shadow: 0 4px 12px rgba(45, 91, 255, 0.2);
        }

        /* Data cards list */
        .data-cards-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .data-card-row {
            display: flex;
            align-items: stretch;
            gap: 18px;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 20px 22px;
            box-shadow: var(--shadow-card);
            transition: box-shadow 0.3s ease, transform 0.3s ease, border-color 0.3s ease;
        }
        .data-card-row:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
            border-color: #CDD9F7;
        }
        .data-card-badge-wrap {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            min-width: 72px;
            flex-shrink: 0;
            gap: 6px;
        }
        .data-card-badge {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            font-weight: 700;
            color: #fff;
            background: var(--primary);
            border-radius: 8px;
            padding: 6px 12px;
            white-space: nowrap;
            letter-spacing: 0.5px;
        }
        .data-card-badge.green {
            background: var(--accent);
        }
        .data-card-badge.orange {
            background: var(--warning);
        }
        .data-card-rate {
            font-size: 13px;
            font-weight: 600;
            color: var(--muted);
            white-space: nowrap;
        }
        .data-card-content {
            flex: 1;
            display: flex;
            flex-direction: column;
            justify-content: center;
            min-width: 0;
        }
        .data-card-title {
            font-size: 17px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 6px;
            line-height: 1.45;
        }
        .data-card-summary {
            font-size: 14px;
            color: var(--muted);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .data-card-meta {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-top: 8px;
            font-size: 13px;
            color: #94A3B8;
            flex-wrap: wrap;
        }
        .data-card-meta .dot {
            width: 4px;
            height: 4px;
            background: #CBD5E1;
            border-radius: 50%;
        }
        .data-card-action {
            display: flex;
            align-items: center;
            flex-shrink: 0;
        }
        .data-card-action .btn-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            padding: 8px 4px;
            white-space: nowrap;
            transition: color 0.2s ease, transform 0.2s ease;
        }
        .data-card-action .btn-link:hover {
            color: var(--primary-dark);
            transform: translateX(2px);
        }

        /* View more */
        .view-more-wrap {
            display: flex;
            justify-content: center;
            margin-top: 28px;
        }

        /* Related topics */
        .related-topics-grid {
            display: grid;
            grid-template-columns: repeat(1, 1fr);
            gap: 18px;
        }
        .topic-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: box-shadow 0.3s ease, transform 0.3s ease;
        }
        .topic-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
        }
        .topic-card-img {
            aspect-ratio: 16/9;
            width: 100%;
            overflow: hidden;
            background: #F1F5F9;
        }
        .topic-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .topic-card-body {
            padding: 18px 20px;
        }
        .topic-card-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 6px;
        }
        .topic-card-text {
            font-size: 14px;
            color: var(--muted);
            line-height: 1.7;
        }

        /* Hot ranking */
        .hot-ranking-grid {
            display: grid;
            grid-template-columns: repeat(1, 1fr);
            gap: 16px;
        }
        .ranking-item {
            display: flex;
            align-items: center;
            gap: 14px;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 14px;
            padding: 16px 18px;
            box-shadow: var(--shadow-card);
            transition: box-shadow 0.3s ease, transform 0.3s ease;
        }
        .ranking-item:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }
        .ranking-number {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 15px;
            font-weight: 800;
            flex-shrink: 0;
            background: #EEF2FF;
            color: var(--primary);
        }
        .ranking-number.top {
            background: var(--warning);
            color: #fff;
        }
        .ranking-number.second {
            background: #CBD5E1;
            color: var(--dark);
        }
        .ranking-number.third {
            background: #FCD34D;
            color: var(--dark);
        }
        .ranking-info {
            flex: 1;
            min-width: 0;
        }
        .ranking-name {
            font-size: 15px;
            font-weight: 600;
            color: var(--dark);
        }
        .ranking-value {
            font-size: 13px;
            color: var(--muted);
            margin-top: 2px;
        }
        .ranking-badge {
            font-size: 12px;
            font-weight: 600;
            color: var(--accent);
            background: #ECFDF5;
            border-radius: 6px;
            padding: 4px 10px;
            white-space: nowrap;
        }

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 14px;
            overflow: hidden;
            box-shadow: 0 2px 8px rgba(15, 23, 42, 0.04);
            transition: border-color 0.2s ease;
        }
        .faq-item.open {
            border-color: #CDC9F7;
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 14px;
            padding: 16px 20px;
            font-size: 15px;
            font-weight: 600;
            color: var(--dark);
            cursor: pointer;
            background: none;
            border: none;
            text-align: left;
            width: 100%;
            transition: color 0.2s ease;
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-icon {
            flex-shrink: 0;
            width: 22px;
            height: 22px;
            border-radius: 50%;
            background: #EEF2FF;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 14px;
            font-weight: 700;
            transition: transform 0.3s ease, background 0.3s ease;
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            background: var(--primary);
            color: #fff;
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 20px;
            color: var(--muted);
            font-size: 14px;
            line-height: 1.8;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 20px 18px;
        }

        /* Back home */
        .back-home-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 32px 28px;
            text-align: center;
            box-shadow: var(--shadow-card);
        }
        .back-home-card h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 10px;
        }
        .back-home-card p {
            font-size: 14px;
            color: var(--muted);
            max-width: 500px;
            margin: 0 auto 18px;
            line-height: 1.7;
        }

        /* Footer */
        .site-footer {
            background: #0F172A;
            color: #CBD5E1;
            padding: 56px 0 28px;
            margin-top: 64px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 36px;
            margin-bottom: 36px;
        }
        .footer-brand-desc {
            font-size: 14px;
            color: #94A3B8;
            line-height: 1.8;
            margin-top: 12px;
            max-width: 320px;
        }
        .footer-col-title {
            font-size: 16px;
            font-weight: 600;
            color: #F1F5F9;
            margin-bottom: 14px;
            letter-spacing: 0.5px;
        }
        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-links a {
            font-size: 14px;
            color: #94A3B8;
            transition: color 0.2s ease;
        }
        .footer-links a:hover {
            color: #60A5FA;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 20px;
            display: flex;
            flex-direction: column;
            gap: 12px;
            align-items: center;
            text-align: center;
            font-size: 13px;
            color: #64748B;
        }
        .footer-bottom-links {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .footer-bottom-links a {
            color: #94A3B8;
            transition: color 0.2s ease;
        }
        .footer-bottom-links a:hover {
            color: #60A5FA;
        }

        /* Responsive */
        @media (min-width: 640px) {
            .related-topics-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .hot-ranking-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-bottom {
                flex-direction: row;
                justify-content: space-between;
                text-align: left;
            }
            .category-header h1 {
                font-size: 36px;
            }
            .section {
                padding: 64px 0;
            }
            .section-sm {
                padding: 48px 0;
            }
        }

        @media (min-width: 768px) {
            .container {
                padding-left: 32px;
                padding-right: 32px;
            }
            .nav-desktop {
                display: flex;
            }
            .hamburger {
                display: none;
            }
            .mobile-nav-drawer,
            .mobile-nav-overlay {
                display: none;
            }
            .related-topics-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .hot-ranking-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .category-header h1 {
                font-size: 40px;
            }
            .section-title {
                font-size: 30px;
            }
        }

        @media (min-width: 1024px) {
            .footer-grid {
                grid-template-columns: 2fr 1fr 1fr 1fr;
            }
            .section {
                padding: 80px 0;
            }
            .section-sm {
                padding: 56px 0;
            }
        }

        @media (max-width: 640px) {
            .data-card-row {
                flex-direction: column;
                gap: 12px;
                padding: 16px;
            }
            .data-card-badge-wrap {
                flex-direction: row;
                min-width: auto;
                justify-content: flex-start;
            }
            .filter-bar {
                padding: 14px 16px;
                gap: 8px;
            }
            .filter-tag {
                font-size: 12px;
                padding: 5px 12px;
            }
            .section {
                padding: 40px 0;
            }
            .section-sm {
                padding: 32px 0;
            }
            .category-header {
                padding: 28px 0 36px;
            }
            .category-header h1 {
                font-size: 28px;
            }
            .btn {
                padding: 9px 18px;
                font-size: 14px;
            }
        }

/* roulang page: category6 */
:root {
            --primary: #2D5BFF;
            --primary-dark: #1E46CC;
            --accent: #10B981;
            --accent-dark: #0DA678;
            --warning: #F59E0B;
            --dark: #0F172A;
            --muted: #475569;
            --surface: #F6F8FC;
            --border: #E8EDF5;
            --card: #FFFFFF;
            --radius-btn: 12px;
            --radius-card: 16px;
            --shadow-card: 0 4px 16px rgba(15, 23, 42, 0.06);
            --shadow-card-hover: 0 10px 28px rgba(15, 23, 42, 0.10);
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            background-color: var(--surface);
            color: var(--dark);
            line-height: 1.75;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body.menu-open {
            overflow: hidden;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.2s ease;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
        }
        button:focus,
        a:focus,
        input:focus,
        select:focus,
        textarea:focus {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 4px;
        }
        button:active,
        a:active {
            transform: scale(0.98);
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        @media (min-width: 1024px) {
            .container {
                padding-left: 32px;
                padding-right: 32px;
            }
        }
        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border);
            height: 68px;
            display: flex;
            align-items: center;
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            gap: 16px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 22px;
            color: var(--dark);
            letter-spacing: -0.5px;
            white-space: nowrap;
            flex-shrink: 0;
        }
        .logo-icon {
            width: 34px;
            height: 34px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            font-weight: 800;
            flex-shrink: 0;
        }
        .logo-text {
            color: var(--dark);
        }
        .logo-text span {
            color: var(--primary);
        }
        .nav-desktop {
            display: none;
            align-items: center;
            gap: 24px;
            flex: 1;
            justify-content: center;
        }
        .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--muted);
            padding: 8px 4px;
            position: relative;
            transition: color 0.2s ease;
            white-space: nowrap;
        }
        .nav-link:hover {
            color: var(--primary);
        }
        .nav-link.active {
            color: var(--primary);
            font-weight: 600;
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 4px;
            right: 4px;
            height: 3px;
            background: var(--primary);
            border-radius: 999px;
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .lang-toggle {
            display: flex;
            align-items: center;
            gap: 4px;
            background: #EEF2FF;
            border: 1px solid var(--border);
            border-radius: 999px;
            padding: 6px 12px;
            font-size: 13px;
            font-weight: 500;
            color: var(--muted);
            transition: all 0.25s ease;
            white-space: nowrap;
        }
        .lang-toggle:hover {
            border-color: var(--primary);
            color: var(--primary);
        }
        .lang-toggle .active-lang {
            color: var(--primary);
            font-weight: 700;
        }
        .lang-separator {
            color: var(--border);
            font-size: 12px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border-radius: var(--radius-btn);
            padding: 10px 22px;
            font-size: 15px;
            font-weight: 600;
            transition: all 0.25s ease;
            white-space: nowrap;
            line-height: 1.5;
            text-decoration: none;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 12px rgba(45, 91, 255, 0.25);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            box-shadow: 0 6px 20px rgba(45, 91, 255, 0.35);
            transform: translateY(-1px);
        }
        .btn-outline {
            background: #fff;
            color: var(--primary);
            border: 1.5px solid var(--primary);
        }
        .btn-outline:hover {
            background: #EEF2FF;
            transform: translateY(-1px);
        }
        .btn-accent {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 4px 12px rgba(16, 185, 129, 0.2);
        }
        .btn-accent:hover {
            background: var(--accent-dark);
            box-shadow: 0 6px 20px rgba(16, 185, 129, 0.3);
            transform: translateY(-1px);
        }
        .btn-sm {
            padding: 8px 16px;
            font-size: 14px;
            border-radius: 10px;
        }
        .btn-lg {
            padding: 14px 28px;
            font-size: 16px;
            border-radius: 14px;
        }
        .hamburger {
            display: flex;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            background: transparent;
            border: none;
            cursor: pointer;
            flex-shrink: 0;
            z-index: 60;
        }
        .hamburger span {
            display: block;
            width: 24px;
            height: 2.5px;
            background: var(--dark);
            border-radius: 4px;
            transition: all 0.3s ease;
        }
        .hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }
        .mobile-menu {
            display: none;
            position: fixed;
            top: 68px;
            left: 0;
            right: 0;
            background: #fff;
            border-bottom: 1px solid var(--border);
            padding: 16px 24px 24px;
            z-index: 40;
            box-shadow: 0 8px 24px rgba(15, 23, 42, 0.08);
            flex-direction: column;
            gap: 8px;
        }
        .mobile-menu.open {
            display: flex;
        }
        .mobile-menu .nav-link {
            display: block;
            padding: 12px 8px;
            font-size: 16px;
            border-bottom: 1px solid var(--border);
        }
        .mobile-menu .nav-link:last-child {
            border-bottom: none;
        }
        .mobile-menu .nav-link.active::after {
            display: none;
        }
        .mobile-menu .nav-link.active {
            background: #EEF2FF;
            border-radius: 8px;
            padding-left: 12px;
        }
        @media (min-width: 768px) {
            .nav-desktop {
                display: flex;
            }
            .hamburger {
                display: none;
            }
            .mobile-menu {
                display: none !important;
            }
        }
        @media (max-width: 767px) {
            .nav-actions .btn-primary {
                display: none;
            }
        }
        /* Page specific */
        .category-hero {
            position: relative;
            padding: 72px 0 64px;
            background: linear-gradient(135deg, #EEF2FF 0%, #F6F8FC 100%);
            overflow: hidden;
        }
        .category-hero::before {
            content: '';
            position: absolute;
            top: -120px;
            right: -80px;
            width: 420px;
            height: 420px;
            background: radial-gradient(circle, rgba(45, 91, 255, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .category-hero::after {
            content: '';
            position: absolute;
            bottom: -140px;
            left: -60px;
            width: 380px;
            height: 380px;
            background: radial-gradient(circle, rgba(16, 185, 129, 0.06) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .category-hero .container {
            position: relative;
            z-index: 1;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--muted);
            margin-bottom: 20px;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--muted);
            transition: color 0.2s ease;
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb .separator {
            color: var(--border);
            font-size: 12px;
        }
        .breadcrumb .current {
            color: var(--primary);
            font-weight: 600;
        }
        .category-hero h1 {
            font-size: 28px;
            font-weight: 700;
            color: var(--dark);
            letter-spacing: -0.5px;
            line-height: 1.3;
            margin-bottom: 16px;
            max-width: 720px;
        }
        .category-hero .hero-desc {
            font-size: 16px;
            color: var(--muted);
            max-width: 680px;
            line-height: 1.85;
            margin-bottom: 0;
        }
        @media (min-width: 768px) {
            .category-hero {
                padding: 88px 0 72px;
            }
            .category-hero h1 {
                font-size: 36px;
            }
            .category-hero .hero-desc {
                font-size: 17px;
            }
        }
        @media (min-width: 1024px) {
            .category-hero h1 {
                font-size: 40px;
            }
        }
        /* Filter bar */
        .filter-bar {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 16px 20px;
            margin-top: -32px;
            position: relative;
            z-index: 2;
            box-shadow: var(--shadow-card);
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
        }
        .filter-label {
            font-size: 14px;
            font-weight: 600;
            color: var(--dark);
            white-space: nowrap;
        }
        .filter-tags {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
            align-items: center;
        }
        .filter-tag {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 6px 14px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 500;
            color: var(--muted);
            background: var(--surface);
            border: 1px solid var(--border);
            transition: all 0.25s ease;
            cursor: pointer;
            white-space: nowrap;
        }
        .filter-tag:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: #EEF2FF;
        }
        .filter-tag.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            font-weight: 600;
        }
        /* Section */
        .section {
            padding: 64px 0;
        }
        .section-alt {
            background: #fff;
        }
        .section-title {
            font-size: 22px;
            font-weight: 700;
            color: var(--dark);
            letter-spacing: -0.3px;
            margin-bottom: 8px;
            line-height: 1.35;
        }
        .section-subtitle {
            font-size: 15px;
            color: var(--muted);
            margin-bottom: 32px;
            line-height: 1.7;
        }
        @media (min-width: 768px) {
            .section {
                padding: 80px 0;
            }
            .section-title {
                font-size: 28px;
            }
            .section-subtitle {
                font-size: 16px;
            }
        }
        @media (min-width: 1024px) {
            .section-title {
                font-size: 30px;
            }
        }
        /* Community card */
        .community-card {
            display: flex;
            flex-direction: column;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all 0.3s ease;
        }
        .community-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
        }
        .community-card .card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            flex-shrink: 0;
        }
        .community-card .card-body {
            padding: 20px 24px 24px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .community-card .card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 10px;
            flex-wrap: wrap;
        }
        .community-card .card-date {
            font-size: 13px;
            color: var(--muted);
        }
        .community-card .card-tag {
            display: inline-flex;
            align-items: center;
            padding: 3px 10px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 600;
            background: #EEF2FF;
            color: var(--primary);
        }
        .community-card .card-tag.live {
            background: #D1FAE5;
            color: var(--accent-dark);
        }
        .community-card .card-tag.hot {
            background: #FEF3C7;
            color: #D97706;
        }
        .community-card .card-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .community-card .card-excerpt {
            font-size: 14px;
            color: var(--muted);
            line-height: 1.75;
            margin-bottom: 16px;
            flex: 1;
        }
        .community-card .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            transition: all 0.25s ease;
            align-self: flex-start;
        }
        .community-card .card-link:hover {
            color: var(--primary-dark);
            gap: 10px;
        }
        @media (min-width: 640px) {
            .community-card {
                flex-direction: row;
            }
            .community-card .card-img {
                width: 260px;
                height: auto;
                min-height: 180px;
            }
            .community-card .card-body {
                padding: 24px 28px;
            }
            .community-card .card-title {
                font-size: 19px;
            }
        }
        /* Grid */
        .card-grid-2 {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
        }
        @media (min-width: 768px) {
            .card-grid-2 {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
        }
        .card-grid-3 {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
        }
        @media (min-width: 768px) {
            .card-grid-3 {
                grid-template-columns: repeat(3, 1fr);
                gap: 24px;
            }
        }
        /* More link */
        .more-link-wrap {
            display: flex;
            justify-content: center;
            margin-top: 32px;
        }
        /* Topic card */
        .topic-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all 0.3s ease;
            display: flex;
            flex-direction: column;
        }
        .topic-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
        }
        .topic-card .topic-img {
            width: 100%;
            height: 160px;
            object-fit: cover;
        }
        .topic-card .topic-body {
            padding: 20px 22px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .topic-card .topic-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 6px;
            line-height: 1.4;
        }
        .topic-card .topic-desc {
            font-size: 13px;
            color: var(--muted);
            line-height: 1.65;
            margin-bottom: 14px;
            flex: 1;
        }
        .topic-card .topic-link {
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: color 0.2s ease;
        }
        .topic-card .topic-link:hover {
            color: var(--primary-dark);
        }
        @media (min-width: 768px) {
            .topic-card .topic-img {
                height: 180px;
            }
        }
        /* Hot rank */
        .hot-rank-panel {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 28px;
            box-shadow: var(--shadow-card);
            display: flex;
            flex-direction: column;
            gap: 24px;
        }
        .hot-rank-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .hot-rank-item {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 12px 14px;
            border-radius: 12px;
            background: var(--surface);
            transition: all 0.25s ease;
        }
        .hot-rank-item:hover {
            background: #EEF2FF;
        }
        .hot-rank-num {
            width: 28px;
            height: 28px;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            font-weight: 700;
            color: #fff;
            flex-shrink: 0;
            background: var(--primary);
        }
        .hot-rank-item:nth-child(1) .hot-rank-num {
            background: #F59E0B;
        }
        .hot-rank-item:nth-child(2) .hot-rank-num {
            background: #64748B;
        }
        .hot-rank-item:nth-child(3) .hot-rank-num {
            background: #B45309;
        }
        .hot-rank-item .rank-info {
            flex: 1;
            min-width: 0;
        }
        .hot-rank-item .rank-title {
            font-size: 14px;
            font-weight: 600;
            color: var(--dark);
            line-height: 1.4;
        }
        .hot-rank-item .rank-meta {
            font-size: 12px;
            color: var(--muted);
        }
        .hot-rank-item .rank-count {
            font-size: 13px;
            font-weight: 700;
            color: var(--primary);
            white-space: nowrap;
        }
        /* Stats */
        .stat-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
        }
        @media (min-width: 768px) {
            .stat-grid {
                grid-template-columns: repeat(4, 1fr);
                gap: 20px;
            }
        }
        .stat-item {
            text-align: center;
            padding: 20px 16px;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 14px;
        }
        .stat-item .stat-number {
            font-size: 28px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
        }
        .stat-item .stat-label {
            font-size: 13px;
            color: var(--muted);
            margin-top: 4px;
        }
        @media (min-width: 768px) {
            .stat-item .stat-number {
                font-size: 32px;
            }
        }
        /* Subscribe box */
        .subscribe-box {
            background: #EEF2FF;
            border: 1px solid #D6E0FF;
            border-radius: var(--radius-card);
            padding: 28px;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .subscribe-box .sub-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--dark);
            line-height: 1.4;
        }
        .subscribe-box .sub-desc {
            font-size: 14px;
            color: var(--muted);
            line-height: 1.7;
        }
        .subscribe-form {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .subscribe-form input {
            padding: 12px 16px;
            border-radius: 10px;
            border: 1px solid var(--border);
            background: #fff;
            font-size: 14px;
            color: var(--dark);
            transition: border-color 0.25s ease;
        }
        .subscribe-form input:focus {
            border-color: var(--primary);
            outline: none;
        }
        .subscribe-form .privacy-note {
            font-size: 12px;
            color: var(--muted);
            line-height: 1.5;
        }
        @media (min-width: 640px) {
            .subscribe-form {
                flex-direction: row;
                align-items: center;
            }
            .subscribe-form input {
                flex: 1;
            }
        }
        /* FAQ */
        .faq-wrap {
            max-width: 820px;
            margin: 0 auto;
        }
        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 14px;
            margin-bottom: 12px;
            overflow: hidden;
            transition: all 0.25s ease;
        }
        .faq-item:hover {
            box-shadow: var(--shadow-card);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 22px;
            cursor: pointer;
            font-size: 15px;
            font-weight: 600;
            color: var(--dark);
            transition: color 0.2s ease;
            width: 100%;
            text-align: left;
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--surface);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            color: var(--muted);
            transition: all 0.3s ease;
        }
        .faq-item.open .faq-icon {
            background: var(--primary);
            color: #fff;
            transform: rotate(45deg);
        }
        .faq-answer {
            display: none;
            padding: 0 22px 20px;
            font-size: 14px;
            color: var(--muted);
            line-height: 1.8;
            border-top: 1px solid var(--border);
            padding-top: 16px;
        }
        .faq-item.open .faq-answer {
            display: block;
        }
        @media (min-width: 768px) {
            .faq-question {
                font-size: 16px;
                padding: 20px 24px;
            }
            .faq-answer {
                padding: 0 24px 22px;
                font-size: 15px;
            }
        }
        /* Back home */
        .back-home-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 32px 28px;
            text-align: center;
            box-shadow: var(--shadow-card);
        }
        .back-home-card .bh-title {
            font-size: 20px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 8px;
        }
        .back-home-card .bh-desc {
            font-size: 14px;
            color: var(--muted);
            margin-bottom: 20px;
            line-height: 1.7;
        }
        .back-home-card .bh-links {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: center;
        }
        /* Footer */
        .site-footer {
            background: var(--dark);
            color: #CBD5E1;
            padding: 60px 0 32px;
            margin-top: 0;
        }
        .site-footer .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 36px;
            margin-bottom: 40px;
        }
        .footer-brand-desc {
            font-size: 14px;
            color: #94A3B8;
            line-height: 1.7;
            margin-top: 14px;
            max-width: 320px;
        }
        .footer-col-title {
            font-size: 15px;
            font-weight: 600;
            color: #F1F5F9;
            margin-bottom: 16px;
        }
        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-link {
            font-size: 14px;
            color: #94A3B8;
            transition: color 0.2s ease;
        }
        .footer-link:hover {
            color: #60A5FA;
        }
        .footer-bottom {
            border-top: 1px solid #1E293B;
            padding-top: 20px;
            display: flex;
            flex-direction: column;
            gap: 12px;
            font-size: 13px;
            color: #94A3B8;
            align-items: center;
        }
        .footer-bottom-links {
            display: flex;
            gap: 8px;
            align-items: center;
        }
        .footer-bottom-links a {
            color: #94A3B8;
            transition: color 0.2s ease;
        }
        .footer-bottom-links a:hover {
            color: #60A5FA;
        }
        @media (min-width: 640px) {
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-bottom {
                flex-direction: row;
                justify-content: space-between;
            }
        }
        @media (min-width: 1024px) {
            .footer-grid {
                grid-template-columns: 2fr 1fr 1fr 1fr;
            }
        }