/* roulang page: index */
:root {
            --brand-deep: #1a0b3b;
            --brand-purple: #5b2bd3;
            --brand-purple-light: #7c4ee0;
            --brand-cyan: #00d4e6;
            --brand-orange: #ff6a3d;
            --brand-orange-hover: #ff8257;
            --bg-page: #f5f4fa;
            --bg-card: #ffffff;
            --text-main: #1e1b2e;
            --text-secondary: #5e5a72;
            --text-light: #8a86a0;
            --text-inverse: #ffffff;
            --border-soft: #e6e3f2;
            --border-focus: #5b2bd3;
            --shadow-sm: 0 4px 12px rgba(26, 11, 59, 0.06);
            --shadow-md: 0 8px 24px rgba(26, 11, 59, 0.10);
            --shadow-lg: 0 12px 28px rgba(26, 11, 59, 0.14);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 18px;
            --radius-xl: 24px;
            --transition: 180ms ease;
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', 'Helvetica Neue', Arial, sans-serif;
            --section-pad: 88px;
            --container-max: 1200px;
        }

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

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

        body {
            font-family: var(--font-sans);
            background: var(--bg-page);
            color: var(--text-main);
            line-height: 1.75;
            margin: 0;
            padding: 0;
            font-size: 16px;
            overflow-x: hidden;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--brand-purple);
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--brand-orange);
            outline-offset: 2px;
            border-radius: var(--radius-sm);
        }
        section {
            padding: var(--section-pad) 0;
            position: relative;
        }
        @media (max-width: 991.98px) {
            section {
                padding: 60px 0;
            }
        }
        @media (max-width: 575.98px) {
            section {
                padding: 44px 0;
            }
        }

        .container-site {
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }
        @media (max-width: 575.98px) {
            .container-site {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

        .section-badge {
            display: inline-block;
            background: linear-gradient(135deg, rgba(91, 43, 211, 0.10), rgba(0, 212, 230, 0.10));
            color: var(--brand-purple);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: 999px;
            letter-spacing: 0.5px;
            margin-bottom: 16px;
            border: 1px solid rgba(91, 43, 211, 0.18);
        }
        .section-title {
            font-size: 30px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 14px;
            line-height: 1.35;
            letter-spacing: 0.3px;
        }
        .section-desc {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 720px;
            line-height: 1.8;
            margin-bottom: 36px;
        }
        @media (max-width: 767.98px) {
            .section-title {
                font-size: 24px;
            }
            .section-desc {
                font-size: 15px;
            }
        }

        /* ============ HEADER ============ */
        .site-header {
            background: linear-gradient(135deg, #1a0b3b 0%, #3d1a8f 45%, #5b2bd3 100%);
            padding: 0 0;
            position: sticky;
            top: 0;
            z-index: 1030;
            box-shadow: 0 4px 20px rgba(26, 11, 59, 0.22);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 68px;
            padding: 0 20px;
            max-width: var(--container-max);
            margin: 0 auto;
        }
        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            color: #ffffff;
            font-weight: 700;
            font-size: 20px;
            letter-spacing: 1px;
            white-space: nowrap;
        }
        .brand-logo .logo-icon {
            width: 36px;
            height: 36px;
            background: rgba(255, 255, 255, 0.16);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--brand-cyan);
            border: 1px solid rgba(255, 255, 255, 0.2);
        }
        .brand-logo:hover {
            color: #ffffff;
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 4px;
            list-style: none;
            margin: 0;
            padding: 0;
            flex-wrap: wrap;
        }
        .nav-menu li a {
            display: block;
            padding: 10px 16px;
            color: rgba(255, 255, 255, 0.86);
            font-size: 15px;
            font-weight: 500;
            border-radius: 10px;
            transition: background var(--transition), color var(--transition);
            white-space: nowrap;
        }
        .nav-menu li a:hover,
        .nav-menu li a.active {
            background: rgba(255, 255, 255, 0.14);
            color: #ffffff;
            text-decoration: none;
        }
        .nav-menu li a.active {
            font-weight: 600;
            box-shadow: inset 0 -2px 0 rgba(255, 255, 255, 0.5);
        }
        .header-cta {
            background: var(--brand-orange);
            color: #ffffff;
            border: none;
            padding: 10px 22px;
            border-radius: 10px;
            font-weight: 600;
            font-size: 14px;
            transition: background var(--transition), transform var(--transition);
            white-space: nowrap;
            box-shadow: 0 4px 14px rgba(255, 106, 61, 0.35);
        }
        .header-cta:hover {
            background: var(--brand-orange-hover);
            color: #ffffff;
            transform: translateY(-1px);
        }
        .navbar-toggler-custom {
            display: none;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.22);
            border-radius: 10px;
            color: #fff;
            padding: 8px 12px;
            font-size: 20px;
            cursor: pointer;
            transition: background var(--transition);
        }
        .navbar-toggler-custom:hover {
            background: rgba(255, 255, 255, 0.22);
        }
        @media (max-width: 991.98px) {
            .navbar-toggler-custom {
                display: flex;
                align-items: center;
                justify-content: center;
            }
            .nav-menu {
                display: none;
                position: absolute;
                top: 68px;
                left: 0;
                right: 0;
                background: linear-gradient(135deg, #1a0b3b 0%, #3d1a8f 60%, #5b2bd3 100%);
                flex-direction: column;
                align-items: stretch;
                padding: 16px 20px;
                gap: 4px;
                box-shadow: 0 16px 32px rgba(26, 11, 59, 0.28);
                border-top: 1px solid rgba(255, 255, 255, 0.1);
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-menu li a {
                padding: 14px 16px;
                font-size: 16px;
                border-radius: 10px;
            }
            .header-cta {
                display: none;
            }
            .header-cta.mobile-visible {
                display: block;
                margin-top: 12px;
                text-align: center;
            }
        }
        @media (max-width: 575.98px) {
            .header-inner {
                min-height: 60px;
            }
            .brand-logo {
                font-size: 17px;
            }
            .brand-logo .logo-icon {
                width: 30px;
                height: 30px;
                font-size: 15px;
            }
            .navbar-toggler-custom {
                padding: 6px 10px;
                font-size: 18px;
            }
            .nav-menu {
                top: 60px;
            }
        }

        /* ============ HERO ============ */
        .hero-section {
            padding: 0;
            background: linear-gradient(135deg, #1a0b3b 0%, #2d1168 40%, #5b2bd3 100%);
            position: relative;
            overflow: hidden;
            min-height: 560px;
            display: flex;
            align-items: center;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/c13106d5e9399bdd.jpg');
            background-size: cover;
            background-position: center;
            opacity: 0.28;
            z-index: 1;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(26, 11, 59, 0.88) 0%, rgba(45, 17, 104, 0.78) 45%, rgba(91, 43, 211, 0.72) 100%);
            z-index: 2;
        }
        .hero-content {
            position: relative;
            z-index: 3;
            padding: 72px 0 64px;
        }
        .hero-left {
            color: #ffffff;
            padding-right: 32px;
        }
        .hero-badge-row {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 20px;
            flex-wrap: wrap;
        }
        .hero-badge {
            background: rgba(255, 255, 255, 0.14);
            border: 1px solid rgba(255, 255, 255, 0.22);
            color: #fff;
            padding: 5px 14px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 500;
            letter-spacing: 0.3px;
        }
        .hero-badge.highlight {
            background: var(--brand-orange);
            border-color: var(--brand-orange);
            font-weight: 600;
        }
        .hero-title {
            font-size: 42px;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 18px;
            letter-spacing: 0.5px;
            color: #ffffff;
        }
        .hero-title .accent {
            color: var(--brand-cyan);
            background: linear-gradient(135deg, #00d4e6, #7ae5ff);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-subtitle {
            font-size: 19px;
            color: rgba(255, 255, 255, 0.85);
            line-height: 1.75;
            margin-bottom: 18px;
            max-width: 560px;
        }
        .hero-desc {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.75);
            line-height: 1.85;
            margin-bottom: 30px;
            max-width: 580px;
        }
        .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }
        .btn-hero-primary {
            background: var(--brand-orange);
            color: #fff;
            border: none;
            padding: 14px 32px;
            border-radius: 12px;
            font-weight: 700;
            font-size: 16px;
            letter-spacing: 0.5px;
            transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
            box-shadow: 0 8px 24px rgba(255, 106, 61, 0.4);
        }
        .btn-hero-primary:hover {
            background: var(--brand-orange-hover);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 12px 32px rgba(255, 106, 61, 0.48);
        }
        .btn-hero-secondary {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.4);
            padding: 12px 28px;
            border-radius: 12px;
            font-weight: 600;
            font-size: 15px;
            transition: background var(--transition), border-color var(--transition);
        }
        .btn-hero-secondary:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(255, 255, 255, 0.65);
            color: #fff;
        }
        .hero-board {
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.16);
            border-radius: var(--radius-xl);
            padding: 28px;
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            box-shadow: 0 16px 40px rgba(0, 0, 0, 0.25);
        }
        .board-head {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 20px;
            color: #fff;
        }
        .board-head span {
            font-weight: 600;
            font-size: 16px;
        }
        .board-live {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            color: #ff8a75;
            font-weight: 600;
        }
        .board-live .dot {
            width: 8px;
            height: 8px;
            background: #ff5a3c;
            border-radius: 50%;
            animation: pulse-dot 1.6s infinite;
        }
        @keyframes pulse-dot {
            0%,
            100% {
                opacity: 1;
                transform: scale(1);
            }
            50% {
                opacity: 0.55;
                transform: scale(1.4);
            }
        }
        .board-item {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            color: rgba(255, 255, 255, 0.88);
            font-size: 14px;
        }
        .board-item:last-child {
            border-bottom: none;
        }
        .board-rank {
            width: 28px;
            height: 28px;
            border-radius: 8px;
            background: rgba(255, 255, 255, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 13px;
            color: #fff;
            flex-shrink: 0;
        }
        .board-rank.top1 {
            background: var(--brand-orange);
        }
        .board-rank.top2 {
            background: #b44aff;
        }
        .board-rank.top3 {
            background: #4aa8ff;
        }
        .board-name {
            flex: 1;
            margin-left: 12px;
            font-weight: 500;
            font-size: 14px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .board-value {
            font-weight: 700;
            font-size: 15px;
            color: var(--brand-cyan);
            font-variant-numeric: tabular-nums;
        }
        @media (max-width: 991.98px) {
            .hero-section {
                min-height: auto;
            }
            .hero-content {
                padding: 48px 0 40px;
            }
            .hero-left {
                padding-right: 0;
                margin-bottom: 36px;
            }
            .hero-title {
                font-size: 32px;
            }
            .hero-subtitle {
                font-size: 17px;
            }
        }
        @media (max-width: 575.98px) {
            .hero-title {
                font-size: 26px;
            }
            .hero-desc {
                font-size: 14px;
            }
            .hero-board {
                padding: 18px;
                border-radius: var(--radius-lg);
            }
            .btn-hero-primary,
            .btn-hero-secondary {
                width: 100%;
                text-align: center;
                justify-content: center;
            }
        }

        /* ============ SEARCH / ENTRY ============ */
        .search-entry-section {
            padding: 40px 0;
            background: var(--bg-card);
            border-bottom: 1px solid var(--border-soft);
        }
        .search-panel {
            background: var(--bg-card);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-lg);
            padding: 28px 32px;
            box-shadow: var(--shadow-sm);
        }
        .search-form {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }
        .search-form input {
            flex: 1;
            min-width: 220px;
            border: 1.5px solid var(--border-soft);
            border-radius: var(--radius-sm);
            padding: 13px 18px;
            font-size: 15px;
            transition: border-color var(--transition), box-shadow var(--transition);
            background: #faf9fd;
        }
        .search-form input:focus {
            border-color: var(--border-focus);
            box-shadow: 0 0 0 4px rgba(91, 43, 211, 0.08);
            outline: none;
        }
        .search-form button {
            background: var(--brand-purple);
            color: #fff;
            border: none;
            padding: 13px 28px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 15px;
            transition: background var(--transition), transform var(--transition);
            white-space: nowrap;
        }
        .search-form button:hover {
            background: var(--brand-purple-light);
            transform: translateY(-1px);
        }
        .hot-tags {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-top: 16px;
            flex-wrap: wrap;
            font-size: 13px;
            color: var(--text-light);
        }
        .hot-tags span {
            font-weight: 600;
            color: var(--text-secondary);
        }
        .hot-tags a {
            padding: 4px 14px;
            border-radius: 999px;
            background: #f0edfa;
            color: var(--brand-purple);
            font-weight: 500;
            transition: background var(--transition), color var(--transition);
        }
        .hot-tags a:hover {
            background: var(--brand-purple);
            color: #fff;
        }
        @media (max-width: 575.98px) {
            .search-panel {
                padding: 20px;
            }
            .search-form button {
                width: 100%;
            }
        }

        /* ============ CATEGORY MATRIX ============ */
        .category-matrix-section {
            background: var(--bg-page);
        }
        .cat-matrix-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .cat-matrix-card {
            background: var(--bg-card);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-lg);
            padding: 26px 24px;
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
            display: flex;
            align-items: flex-start;
            gap: 16px;
        }
        .cat-matrix-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: rgba(91, 43, 211, 0.25);
        }
        .cat-matrix-icon {
            width: 48px;
            height: 48px;
            border-radius: 14px;
            background: linear-gradient(135deg, rgba(91, 43, 211, 0.12), rgba(0, 212, 230, 0.08));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--brand-purple);
            flex-shrink: 0;
        }
        .cat-matrix-info h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--text-main);
        }
        .cat-matrix-info p {
            font-size: 14px;
            color: var(--text-secondary);
            margin-bottom: 0;
            line-height: 1.7;
        }
        @media (max-width: 991.98px) {
            .cat-matrix-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 575.98px) {
            .cat-matrix-grid {
                grid-template-columns: 1fr;
            }
            .cat-matrix-card {
                padding: 20px;
            }
        }

        /* ============ METRICS BOARD ============ */
        .metrics-section {
            background: #fff;
        }
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .metric-card {
            background: var(--bg-card);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-lg);
            padding: 26px 22px;
            box-shadow: var(--shadow-sm);
            position: relative;
            transition: box-shadow var(--transition), transform var(--transition);
            overflow: hidden;
        }
        .metric-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .metric-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(135deg, var(--brand-purple), var(--brand-cyan));
            border-radius: var(--radius-lg) var(--radius-lg) 0 0;
        }
        .metric-value {
            font-size: 36px;
            font-weight: 800;
            line-height: 1.2;
            background: linear-gradient(135deg, #1a0b3b, #5b2bd3);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 6px;
            font-variant-numeric: tabular-nums;
        }
        .metric-label {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 4px;
        }
        .metric-badge {
            display: inline-block;
            background: rgba(0, 212, 230, 0.12);
            color: #008c9e;
            font-size: 12px;
            font-weight: 600;
            padding: 3px 12px;
            border-radius: 999px;
            margin-top: 8px;
            letter-spacing: 0.3px;
        }
        @media (max-width: 991.98px) {
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 575.98px) {
            .metrics-grid {
                grid-template-columns: 1fr;
            }
            .metric-value {
                font-size: 30px;
            }
        }

        /* ============ SERVICE MATRIX ============ */
        .service-matrix-section {
            background: var(--bg-page);
        }
        .service-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 22px;
        }
        .service-card {
            background: var(--bg-card);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-lg);
            padding: 28px 26px;
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
            display: flex;
            flex-direction: column;
        }
        .service-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
            border-color: rgba(91, 43, 211, 0.22);
        }
        .service-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            background: linear-gradient(135deg, #1a0b3b, #5b2bd3);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            color: #fff;
            margin-bottom: 16px;
        }
        .service-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text-main);
        }
        .service-card p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            flex: 1;
            margin-bottom: 18px;
        }
        .service-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--brand-purple);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: color var(--transition), gap var(--transition);
        }
        .service-link:hover {
            color: var(--brand-orange);
            gap: 10px;
        }
        @media (max-width: 991.98px) {
            .service-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 575.98px) {
            .service-grid {
                grid-template-columns: 1fr;
            }
            .service-card {
                padding: 22px 20px;
            }
        }

        /* ============ CONTRAST ============ */
        .contrast-section {
            background: #fff;
        }
        .contrast-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 22px;
        }
        .contrast-card {
            background: #faf9fd;
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            box-shadow: var(--shadow-sm);
            transition: border-color var(--transition), box-shadow var(--transition);
        }
        .contrast-card.highlight {
            background: linear-gradient(135deg, #1a0b3b, #3d1a8f);
            border-color: transparent;
            color: #fff;
            box-shadow: var(--shadow-md);
        }
        .contrast-card h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .contrast-card .contrast-value {
            font-size: 34px;
            font-weight: 800;
            margin-bottom: 12px;
            font-variant-numeric: tabular-nums;
        }
        .contrast-card.highlight .contrast-value {
            color: var(--brand-cyan);
        }
        .contrast-card .contrast-desc {
            font-size: 14px;
            line-height: 1.75;
            color: var(--text-secondary);
        }
        .contrast-card.highlight .contrast-desc {
            color: rgba(255, 255, 255, 0.82);
        }
        @media (max-width: 991.98px) {
            .contrast-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 575.98px) {
            .contrast-grid {
                grid-template-columns: 1fr;
            }
            .contrast-card {
                padding: 22px 20px;
            }
        }

        /* ============ TIMELINE ============ */
        .timeline-section {
            background: var(--bg-page);
        }
        .timeline-vertical {
            position: relative;
            max-width: 760px;
            margin: 0 auto;
            padding-left: 28px;
        }
        .timeline-vertical::before {
            content: '';
            position: absolute;
            left: 10px;
            top: 4px;
            bottom: 4px;
            width: 3px;
            background: linear-gradient(to bottom, var(--brand-purple), var(--brand-cyan));
            border-radius: 3px;
        }
        .timeline-item {
            position: relative;
            padding-bottom: 32px;
            padding-left: 16px;
        }
        .timeline-item:last-child {
            padding-bottom: 0;
        }
        .timeline-item::before {
            content: '';
            position: absolute;
            left: -23px;
            top: 8px;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: var(--brand-purple);
            border: 3px solid #fff;
            box-shadow: 0 0 0 3px rgba(91, 43, 211, 0.2);
        }
        .timeline-item .timeline-year {
            font-size: 14px;
            font-weight: 700;
            color: var(--brand-purple);
            margin-bottom: 4px;
            letter-spacing: 0.5px;
        }
        .timeline-item .timeline-title {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 4px;
        }
        .timeline-item .timeline-desc {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        @media (max-width: 575.98px) {
            .timeline-vertical {
                padding-left: 20px;
            }
            .timeline-item {
                padding-left: 10px;
            }
            .timeline-item::before {
                left: -17px;
                width: 10px;
                height: 10px;
            }
        }

        /* ============ FEATURED LIST ============ */
        .featured-section {
            background: #fff;
        }
        .featured-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 22px;
        }
        .featured-card {
            display: flex;
            gap: 18px;
            background: var(--bg-card);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition), transform var(--transition);
        }
        .featured-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .featured-img {
            width: 180px;
            flex-shrink: 0;
            overflow: hidden;
            background: #e8e5f5;
        }
        .featured-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .featured-info {
            padding: 18px 18px 18px 0;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .featured-info h3 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--text-main);
        }
        .featured-info p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 8px;
        }
        .featured-info .featured-meta {
            font-size: 13px;
            color: var(--text-light);
        }
        @media (max-width: 991.98px) {
            .featured-grid {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 575.98px) {
            .featured-card {
                flex-direction: column;
            }
            .featured-img {
                width: 100%;
                height: 160px;
            }
            .featured-info {
                padding: 16px;
            }
        }

        /* ============ LATEST UPDATES ============ */
        .latest-section {
            background: var(--bg-page);
        }
        .latest-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .latest-item {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            background: var(--bg-card);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-md);
            padding: 18px 22px;
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition), border-color var(--transition);
        }
        .latest-item:hover {
            box-shadow: var(--shadow-md);
            border-color: rgba(91, 43, 211, 0.22);
        }
        .latest-info h3 {
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 4px;
            color: var(--text-main);
        }
        .latest-info p {
            font-size: 13px;
            color: var(--text-light);
            margin-bottom: 0;
        }
        .latest-tag {
            background: rgba(91, 43, 211, 0.08);
            color: var(--brand-purple);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 999px;
            white-space: nowrap;
            flex-shrink: 0;
        }
        @media (max-width: 575.98px) {
            .latest-item {
                flex-direction: column;
                align-items: flex-start;
                padding: 16px;
            }
        }

        /* ============ RANKING ============ */
        .ranking-section {
            background: #fff;
        }
        .ranking-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 26px;
        }
        .ranking-card {
            background: var(--bg-card);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-lg);
            padding: 26px;
            box-shadow: var(--shadow-sm);
        }
        .ranking-card h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 18px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .ranking-item {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 0;
            border-bottom: 1px solid var(--border-soft);
        }
        .ranking-item:last-child {
            border-bottom: none;
        }
        .ranking-pos {
            width: 30px;
            height: 30px;
            border-radius: 8px;
            background: linear-gradient(135deg, #1a0b3b, #5b2bd3);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 13px;
            flex-shrink: 0;
        }
        .ranking-name {
            flex: 1;
            font-size: 15px;
            font-weight: 500;
        }
        .ranking-score {
            font-weight: 700;
            font-size: 15px;
            color: var(--brand-purple);
            font-variant-numeric: tabular-nums;
        }
        @media (max-width: 991.98px) {
            .ranking-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ============ RESOURCE CENTER ============ */
        .resource-section {
            background: var(--bg-page);
        }
        .resource-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .resource-card {
            background: var(--bg-card);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-lg);
            padding: 24px;
            box-shadow: var(--shadow-sm);
            text-align: center;
            transition: box-shadow var(--transition), transform var(--transition);
        }
        .resource-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .resource-icon {
            width: 56px;
            height: 56px;
            margin: 0 auto 14px;
            border-radius: 50%;
            background: rgba(91, 43, 211, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 26px;
            color: var(--brand-purple);
        }
        .resource-card h3 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .resource-card p {
            font-size: 14px;
            color: var(--text-secondary);
            margin-bottom: 0;
            line-height: 1.7;
        }
        @media (max-width: 991.98px) {
            .resource-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 575.98px) {
            .resource-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ============ NEWS LIST ============ */
        .news-section {
            background: #fff;
        }
        .news-item {
            display: flex;
            gap: 20px;
            padding: 22px 0;
            border-bottom: 1px solid var(--border-soft);
            align-items: flex-start;
        }
        .news-item:last-child {
            border-bottom: none;
        }
        .news-thumb {
            width: 140px;
            height: 96px;
            flex-shrink: 0;
            border-radius: var(--radius-md);
            overflow: hidden;
            background: #e8e5f5;
        }
        .news-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .news-info {
            flex: 1;
        }
        .news-date {
            font-size: 13px;
            color: var(--text-light);
            margin-bottom: 4px;
        }
        .news-info h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-main);
        }
        .news-info p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
            margin-bottom: 12px;
        }
        .news-more {
            font-size: 14px;
            font-weight: 600;
            color: var(--brand-purple);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: color var(--transition), gap var(--transition);
        }
        .news-more:hover {
            color: var(--brand-orange);
            gap: 10px;
        }
        @media (max-width: 575.98px) {
            .news-item {
                flex-direction: column;
            }
            .news-thumb {
                width: 100%;
                height: 180px;
                border-radius: var(--radius-md);
            }
        }

        /* ============ BRAND INTRO ============ */
        .brand-intro-section {
            background: var(--bg-page);
        }
        .brand-intro-card {
            background: linear-gradient(135deg, #1a0b3b 0%, #3d1a8f 55%, #5b2bd3 100%);
            border-radius: var(--radius-xl);
            padding: 44px 48px;
            color: #fff;
            box-shadow: var(--shadow-lg);
            max-width: 820px;
            margin: 0 auto;
            position: relative;
            overflow: hidden;
        }
        .brand-intro-card::before {
            content: '';
            position: absolute;
            top: -40%;
            right: -10%;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: rgba(0, 212, 230, 0.12);
        }
        .brand-intro-card h2 {
            font-size: 26px;
            font-weight: 700;
            margin-bottom: 18px;
            position: relative;
            z-index: 1;
        }
        .brand-intro-card p {
            font-size: 15px;
            line-height: 1.9;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 0;
            position: relative;
            z-index: 1;
        }
        @media (max-width: 575.98px) {
            .brand-intro-card {
                padding: 28px 22px;
            }
            .brand-intro-card h2 {
                font-size: 21px;
            }
        }

        /* ============ PLATFORM GUARANTEE ============ */
        .guarantee-section {
            background: #fff;
        }
        .guarantee-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 18px;
        }
        .guarantee-card {
            background: #faf9fd;
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-md);
            padding: 22px 18px;
            text-align: center;
            transition: box-shadow var(--transition), transform var(--transition);
        }
        .guarantee-card:hover {
            box-shadow: var(--shadow-sm);
            transform: translateY(-2px);
        }
        .guarantee-card i {
            font-size: 28px;
            color: var(--brand-purple);
            margin-bottom: 10px;
        }
        .guarantee-card h3 {
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--text-main);
        }
        .guarantee-card p {
            font-size: 13px;
            color: var(--text-secondary);
            margin-bottom: 0;
            line-height: 1.6;
        }
        @media (max-width: 991.98px) {
            .guarantee-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 575.98px) {
            .guarantee-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ============ QUICK ANSWERS ============ */
        .quick-answers-section {
            background: var(--bg-page);
        }
        .qa-list {
            max-width: 760px;
            margin: 0 auto;
        }
        .qa-item {
            background: var(--bg-card);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }
        .qa-question {
            width: 100%;
            background: transparent;
            border: none;
            text-align: left;
            padding: 18px 22px;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            cursor: pointer;
            transition: background var(--transition);
        }
        .qa-question:hover {
            background: #faf9fd;
        }
        .qa-question .qa-arrow {
            transition: transform var(--transition);
            flex-shrink: 0;
            color: var(--brand-purple);
        }
        .qa-question.open .qa-arrow {
            transform: rotate(180deg);
        }
        .qa-answer {
            padding: 0 22px 18px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
            display: none;
        }
        .qa-answer.show {
            display: block;
        }
        @media (max-width: 575.98px) {
            .qa-question {
                padding: 16px 18px;
                font-size: 14px;
            }
            .qa-answer {
                padding: 0 18px 14px;
                font-size: 13px;
            }
        }

        /* ============ FAQ ============ */
        .faq-section {
            background: #fff;
        }
        .faq-accordion {
            max-width: 820px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-md);
            margin-bottom: 14px;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            width: 100%;
            background: transparent;
            border: none;
            text-align: left;
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            cursor: pointer;
            transition: background var(--transition);
        }
        .faq-question:hover {
            background: #faf9fd;
        }
        .faq-question .faq-q-icon {
            width: 32px;
            height: 32px;
            border-radius: 8px;
            background: rgba(91, 43, 211, 0.08);
            color: var(--brand-purple);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            flex-shrink: 0;
            transition: transform var(--transition), background var(--transition);
        }
        .faq-question.open .faq-q-icon {
            transform: rotate(180deg);
            background: var(--brand-purple);
            color: #fff;
        }
        .faq-answer {
            padding: 0 24px 20px;
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.85;
            display: none;
        }
        .faq-answer.show {
            display: block;
        }
        @media (max-width: 575.98px) {
            .faq-question {
                padding: 16px 18px;
                font-size: 15px;
            }
            .faq-answer {
                padding: 0 18px 14px;
                font-size: 14px;
            }
        }

        /* ============ CTA FORM ============ */
        .cta-form-section {
            background: linear-gradient(135deg, #1a0b3b 0%, #3d1a8f 50%, #5b2bd3 100%);
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .cta-form-section::before {
            content: '';
            position: absolute;
            top: -30%;
            left: -15%;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: rgba(0, 212, 230, 0.1);
        }
        .cta-form-section::after {
            content: '';
            position: absolute;
            bottom: -20%;
            right: -10%;
            width: 350px;
            height: 350px;
            border-radius: 50%;
            background: rgba(255, 106, 61, 0.1);
        }
        .cta-form-inner {
            position: relative;
            z-index: 1;
            max-width: 620px;
            margin: 0 auto;
            text-align: center;
        }
        .cta-form-inner h2 {
            font-size: 28px;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .cta-form-inner .cta-desc {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.8);
            line-height: 1.75;
            margin-bottom: 28px;
        }
        .cta-form {
            display: flex;
            flex-direction: column;
            gap: 14px;
            text-align: left;
        }
        .cta-form label {
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 0;
        }
        .cta-form input,
        .cta-form textarea {
            background: rgba(255, 255, 255, 0.08);
            border: 1.5px solid rgba(255, 255, 255, 0.2);
            border-radius: var(--radius-sm);
            padding: 13px 18px;
            font-size: 15px;
            color: #fff;
            transition: border-color var(--transition), box-shadow var(--transition);
            width: 100%;
        }
        .cta-form input::placeholder,
        .cta-form textarea::placeholder {
            color: rgba(255, 255, 255, 0.55);
        }
        .cta-form input:focus,
        .cta-form textarea:focus {
            border-color: var(--brand-cyan);
            box-shadow: 0 0 0 4px rgba(0, 212, 230, 0.15);
            outline: none;
        }
        .cta-form textarea {
            resize: vertical;
            min-height: 100px;
        }
        .btn-cta-submit {
            background: var(--brand-orange);
            color: #fff;
            border: none;
            padding: 14px 32px;
            border-radius: var(--radius-sm);
            font-weight: 700;
            font-size: 16px;
            letter-spacing: 0.5px;
            transition: background var(--transition), transform var(--transition);
            box-shadow: 0 8px 24px rgba(255, 106, 61, 0.35);
            margin-top: 6px;
        }
        .btn-cta-submit:hover {
            background: var(--brand-orange-hover);
            transform: translateY(-2px);
        }
        @media (max-width: 575.98px) {
            .cta-form-inner h2 {
                font-size: 22px;
            }
        }

        /* ============ COLLECTION ENTRY ============ */
        .collection-section {
            background: var(--bg-page);
        }
        .collection-tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
            max-width: 720px;
            margin: 0 auto;
        }
        .collection-tag {
            padding: 10px 22px;
            border-radius: 999px;
            background: var(--bg-card);
            border: 1px solid var(--border-soft);
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            box-shadow: var(--shadow-sm);
            transition: background var(--transition), color var(--transition), border-color var(--transition), transform var(--transition);
        }
        .collection-tag:hover {
            background: var(--brand-purple);
            color: #fff;
            border-color: var(--brand-purple);
            transform: translateY(-2px);
        }

        /* ============ FOOTER ============ */
        .site-footer {
            background: #100720;
            color: rgba(255, 255, 255, 0.75);
            padding: 52px 0 28px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 40px;
            margin-bottom: 36px;
        }
        .footer-brand {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 1px;
        }
        .footer-brand p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.55);
            font-weight: 400;
            line-height: 1.7;
            letter-spacing: 0;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            transition: color var(--transition);
        }
        .footer-col ul li a:hover {
            color: #fff;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 14px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.6);
            transition: color var(--transition);
        }
        .footer-bottom a:hover {
            color: #fff;
        }
        @media (max-width: 991.98px) {
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 575.98px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
        }

/* roulang page: category1 */
:root {
            --brand-deep: #1a0b3b;
            --brand-purple: #5b2bd3;
            --brand-purple-light: #7c4ee0;
            --brand-cyan: #00d4e6;
            --brand-orange: #ff6a3d;
            --brand-orange-hover: #ff8257;
            --bg-page: #f5f4fa;
            --bg-card: #ffffff;
            --text-main: #1e1b2e;
            --text-secondary: #5e5a72;
            --text-light: #8a86a0;
            --text-inverse: #ffffff;
            --border-soft: #e6e3f2;
            --border-focus: #5b2bd3;
            --shadow-sm: 0 4px 12px rgba(26, 11, 59, 0.06);
            --shadow-md: 0 8px 24px rgba(26, 11, 59, 0.10);
            --shadow-lg: 0 12px 28px rgba(26, 11, 59, 0.14);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 18px;
            --radius-xl: 24px;
            --transition: 180ms ease;
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', 'Helvetica Neue', Arial, sans-serif;
            --section-pad: 88px;
            --container-max: 1200px;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
        }
        body {
            font-family: var(--font-sans);
            background: var(--bg-page);
            color: var(--text-main);
            line-height: 1.75;
            margin: 0;
            padding: 0;
            font-size: 16px;
            overflow-x: hidden;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--brand-purple);
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--brand-orange);
            outline-offset: 2px;
            border-radius: var(--radius-sm);
        }
        section {
            padding: 60px 0;
            position: relative;
        }
        .container-site {
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }
        .section-badge {
            display: inline-block;
            background: linear-gradient(135deg, rgba(91, 43, 211, 0.10), rgba(0, 212, 230, 0.10));
            color: var(--brand-purple);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: 999px;
            letter-spacing: 0.5px;
            margin-bottom: 16px;
            border: 1px solid rgba(91, 43, 211, 0.18);
        }
        .section-title {
            font-size: 30px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 14px;
            line-height: 1.35;
            letter-spacing: 0.3px;
        }
        .section-desc {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 720px;
            line-height: 1.8;
            margin-bottom: 36px;
        }

        /* ============ HEADER ============ */
        .site-header {
            background: linear-gradient(135deg, #1a0b3b 0%, #3d1a8f 45%, #5b2bd3 100%);
            padding: 0;
            position: sticky;
            top: 0;
            z-index: 1030;
            box-shadow: 0 4px 20px rgba(26, 11, 59, 0.22);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 68px;
            padding: 0 20px;
            max-width: var(--container-max);
            margin: 0 auto;
        }
        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            color: #ffffff;
            font-weight: 700;
            font-size: 20px;
            letter-spacing: 1px;
            white-space: nowrap;
        }
        .brand-logo .logo-icon {
            width: 36px;
            height: 36px;
            background: rgba(255, 255, 255, 0.16);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--brand-cyan);
            border: 1px solid rgba(255, 255, 255, 0.2);
        }
        .brand-logo:hover {
            color: #ffffff;
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 4px;
            list-style: none;
            margin: 0;
            padding: 0;
            flex-wrap: wrap;
        }
        .nav-menu li a {
            display: block;
            padding: 10px 16px;
            color: rgba(255, 255, 255, 0.86);
            font-size: 15px;
            font-weight: 500;
            border-radius: 10px;
            transition: background var(--transition), color var(--transition);
            white-space: nowrap;
        }
        .nav-menu li a:hover,
        .nav-menu li a.active {
            background: rgba(255, 255, 255, 0.14);
            color: #ffffff;
            text-decoration: none;
        }
        .nav-menu li a.active {
            font-weight: 600;
            box-shadow: inset 0 -2px 0 rgba(255, 255, 255, 0.5);
        }
        .header-cta {
            background: var(--brand-orange);
            color: #ffffff;
            border: none;
            padding: 10px 22px;
            border-radius: 10px;
            font-weight: 600;
            font-size: 14px;
            white-space: nowrap;
            transition: background var(--transition), transform var(--transition);
            display: inline-block;
        }
        .header-cta:hover {
            background: var(--brand-orange-hover);
            color: #ffffff;
            transform: translateY(-1px);
        }
        .navbar-toggler-custom {
            display: none;
            background: rgba(255, 255, 255, 0.16);
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: #ffffff;
            border-radius: 8px;
            padding: 8px 14px;
            font-size: 18px;
            cursor: pointer;
            align-items: center;
            justify-content: center;
        }
        .mobile-visible {
            display: none !important;
        }

        /* ============ PAGE HERO ============ */
        .page-hero {
            background: linear-gradient(135deg, #1a0b3b 0%, #3d1a8f 50%, #5b2bd3 100%);
            padding: 56px 0 64px;
            color: #ffffff;
            position: relative;
            overflow: hidden;
        }
        .page-hero::after {
            content: '';
            position: absolute;
            top: -40%;
            right: -10%;
            width: 420px;
            height: 420px;
            background: radial-gradient(circle, rgba(0, 212, 230, 0.18) 0%, transparent 60%);
            border-radius: 50%;
            pointer-events: none;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            bottom: -30%;
            left: -8%;
            width: 380px;
            height: 380px;
            background: radial-gradient(circle, rgba(255, 106, 61, 0.14) 0%, transparent 60%);
            border-radius: 50%;
            pointer-events: none;
        }
        .page-hero .container-site {
            position: relative;
            z-index: 2;
        }
        .page-hero-breadcrumb {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 16px;
            letter-spacing: 0.4px;
        }
        .page-hero-breadcrumb a {
            color: rgba(255, 255, 255, 0.7);
            transition: color var(--transition);
        }
        .page-hero-breadcrumb a:hover {
            color: #ffffff;
        }
        .page-hero h1 {
            font-size: 40px;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 16px;
            line-height: 1.3;
            letter-spacing: 0.5px;
        }
        .page-hero .lead {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.88);
            max-width: 680px;
            line-height: 1.8;
            margin-bottom: 0;
        }
        .hero-stat-inline {
            display: flex;
            flex-wrap: wrap;
            gap: 32px;
            margin-top: 28px;
        }
        .hero-stat-inline .stat-item {
            display: flex;
            align-items: center;
            gap: 10px;
            background: rgba(255, 255, 255, 0.10);
            border: 1px solid rgba(255, 255, 255, 0.18);
            border-radius: var(--radius-md);
            padding: 10px 18px;
            backdrop-filter: blur(6px);
        }
        .hero-stat-inline .stat-item i {
            color: var(--brand-cyan);
            font-size: 18px;
        }
        .hero-stat-inline .stat-item span {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.92);
            font-weight: 500;
        }

        /* ============ CARD LIST ============ */
        .card-list-section {
            background: linear-gradient(180deg, var(--bg-page) 0%, #efedf7 100%);
        }
        .card-list-item {
            display: flex;
            gap: 24px;
            background: var(--bg-card);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-lg);
            padding: 20px;
            margin-bottom: 20px;
            transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
            align-items: flex-start;
        }
        .card-list-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            border-color: rgba(91, 43, 211, 0.25);
        }
        .card-list-thumb {
            flex-shrink: 0;
            width: 220px;
            height: 140px;
            border-radius: var(--radius-md);
            overflow: hidden;
            background: #e9e6f5;
        }
        .card-list-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 400ms ease;
        }
        .card-list-item:hover .card-list-thumb img {
            transform: scale(1.04);
        }
        .card-list-content {
            flex: 1;
            min-width: 0;
        }
        .card-list-meta {
            display: flex;
            align-items: center;
            gap: 14px;
            font-size: 13px;
            color: var(--text-light);
            margin-bottom: 10px;
            flex-wrap: wrap;
        }
        .card-list-meta .tag {
            background: rgba(91, 43, 211, 0.08);
            color: var(--brand-purple);
            padding: 3px 12px;
            border-radius: 999px;
            font-weight: 500;
            font-size: 12px;
        }
        .card-list-meta .date {
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .card-list-title {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .card-list-title a {
            color: var(--text-main);
            transition: color var(--transition);
        }
        .card-list-title a:hover {
            color: var(--brand-purple);
        }
        .card-list-summary {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
            margin-bottom: 12px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .read-more {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--brand-purple);
            transition: color var(--transition), gap var(--transition);
        }
        .read-more:hover {
            color: var(--brand-orange);
            gap: 10px;
        }

        /* ============ DATA STRIP ============ */
        .data-strip-section {
            background: #ffffff;
            border-top: 1px solid var(--border-soft);
            border-bottom: 1px solid var(--border-soft);
            padding: 36px 0;
        }
        .data-strip-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .data-strip-card {
            background: var(--bg-page);
            border-radius: var(--radius-lg);
            padding: 20px 22px;
            border: 1px solid var(--border-soft);
            display: flex;
            align-items: center;
            gap: 16px;
            transition: box-shadow var(--transition), transform var(--transition);
        }
        .data-strip-card:hover {
            box-shadow: var(--shadow-sm);
            transform: translateY(-2px);
        }
        .data-strip-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--brand-purple), var(--brand-cyan));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #ffffff;
            font-size: 20px;
            flex-shrink: 0;
        }
        .data-strip-info h4 {
            font-size: 24px;
            font-weight: 700;
            color: var(--text-main);
            margin: 0 0 2px;
            line-height: 1.2;
        }
        .data-strip-info p {
            font-size: 13px;
            color: var(--text-light);
            margin: 0;
        }

        /* ============ TOPIC SECTION ============ */
        .topic-section {
            background: var(--bg-page);
        }
        .topic-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .topic-card {
            background: var(--bg-card);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-lg);
            padding: 26px 24px;
            transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
            position: relative;
            overflow: hidden;
        }
        .topic-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--brand-purple), var(--brand-cyan));
            opacity: 0;
            transition: opacity var(--transition);
        }
        .topic-card:hover::before {
            opacity: 1;
        }
        .topic-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: rgba(91, 43, 211, 0.22);
        }
        .topic-card .topic-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: rgba(91, 43, 211, 0.08);
            color: var(--brand-purple);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            margin-bottom: 16px;
        }
        .topic-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-main);
            line-height: 1.4;
        }
        .topic-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
            margin-bottom: 14px;
        }
        .topic-card .topic-tag-row {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .topic-card .topic-tag {
            font-size: 12px;
            background: var(--bg-page);
            color: var(--text-secondary);
            padding: 4px 12px;
            border-radius: 999px;
            border: 1px solid var(--border-soft);
        }

        /* ============ FAQ ============ */
        .faq-section {
            background: #ffffff;
            border-top: 1px solid var(--border-soft);
        }
        .accordion-item {
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-md) !important;
            margin-bottom: 12px;
            overflow: hidden;
            background: var(--bg-card);
        }
        .accordion-button {
            font-weight: 600;
            font-size: 16px;
            color: var(--text-main);
            background: var(--bg-card);
            padding: 18px 22px;
            border: none;
            box-shadow: none;
            transition: background var(--transition), color var(--transition);
            border-radius: var(--radius-md) !important;
        }
        .accordion-button:not(.collapsed) {
            background: linear-gradient(135deg, rgba(91, 43, 211, 0.05), rgba(0, 212, 230, 0.05));
            color: var(--brand-purple);
            box-shadow: none;
        }
        .accordion-button:focus {
            box-shadow: 0 0 0 2px rgba(91, 43, 211, 0.18);
            border-color: transparent;
        }
        .accordion-button::after {
            filter: invert(25%) sepia(60%) saturate(2000%) hue-rotate(245deg);
        }
        .accordion-body {
            padding: 16px 22px 20px;
            color: var(--text-secondary);
            font-size: 14px;
            line-height: 1.8;
        }

        /* ============ CTA ============ */
        .cta-section {
            background: #ffffff;
            padding: 40px 0;
        }
        .cta-panel {
            background: linear-gradient(135deg, #1a0b3b 0%, #3d1a8f 50%, #5b2bd3 100%);
            border-radius: var(--radius-xl);
            padding: 44px 48px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            flex-wrap: wrap;
            position: relative;
            overflow: hidden;
        }
        .cta-panel::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -5%;
            width: 360px;
            height: 360px;
            background: radial-gradient(circle, rgba(0, 212, 230, 0.16) 0%, transparent 60%);
            border-radius: 50%;
        }
        .cta-panel h3 {
            color: #ffffff;
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 8px;
            line-height: 1.4;
            position: relative;
            z-index: 2;
        }
        .cta-panel p {
            color: rgba(255, 255, 255, 0.88);
            font-size: 15px;
            margin: 0;
            line-height: 1.7;
            position: relative;
            z-index: 2;
        }
        .cta-panel .btn-cta {
            background: var(--brand-orange);
            color: #ffffff;
            border: none;
            padding: 12px 30px;
            border-radius: 10px;
            font-weight: 600;
            font-size: 15px;
            white-space: nowrap;
            transition: background var(--transition), transform var(--transition);
            position: relative;
            z-index: 2;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .cta-panel .btn-cta:hover {
            background: var(--brand-orange-hover);
            color: #ffffff;
            transform: translateY(-2px);
        }

        /* ============ FOOTER ============ */
        .site-footer {
            background: #1a0b3b;
            color: rgba(255, 255, 255, 0.78);
            padding: 48px 0 24px;
            font-size: 14px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-brand {
            font-size: 20px;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 12px;
            letter-spacing: 1px;
        }
        .footer-brand p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.8;
            margin-top: 10px;
            font-weight: 400;
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #ffffff;
            margin-bottom: 14px;
            letter-spacing: 0.5px;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.62);
            transition: color var(--transition);
            font-size: 13px;
        }
        .footer-col ul li a:hover {
            color: #ffffff;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.55);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.55);
            transition: color var(--transition);
        }
        .footer-bottom a:hover {
            color: #ffffff;
        }

        /* ============ RESPONSIVE ============ */
        @media (max-width: 991.98px) {
            .header-inner {
                flex-wrap: wrap;
                gap: 8px;
                padding: 10px 20px;
            }
            .nav-menu {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: flex-start;
                gap: 2px;
                padding: 10px 0 6px;
                background: transparent;
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-menu li {
                width: 100%;
            }
            .nav-menu li a {
                padding: 10px 14px;
                width: 100%;
                display: block;
            }
            .navbar-toggler-custom {
                display: flex;
            }
            .header-cta {
                display: none;
            }
            .mobile-visible {
                display: block !important;
            }
            .mobile-visible a {
                display: block;
                width: 100%;
                text-align: center;
                margin-top: 6px;
            }
            .card-list-item {
                flex-direction: column;
                gap: 16px;
            }
            .card-list-thumb {
                width: 100%;
                height: 180px;
            }
            .data-strip-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 14px;
            }
            .topic-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .cta-panel {
                flex-direction: column;
                align-items: flex-start;
                padding: 32px 28px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .page-hero h1 {
                font-size: 32px;
            }
            .section-title {
                font-size: 26px;
            }
        }
        @media (max-width: 767.98px) {
            section {
                padding: 44px 0;
            }
            .hero-stat-inline {
                gap: 12px;
            }
            .hero-stat-inline .stat-item {
                padding: 8px 14px;
                font-size: 13px;
            }
            .data-strip-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .data-strip-card {
                padding: 14px 16px;
                gap: 10px;
            }
            .data-strip-icon {
                width: 40px;
                height: 40px;
                font-size: 16px;
                border-radius: 10px;
            }
            .data-strip-info h4 {
                font-size: 20px;
            }
            .topic-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
            .page-hero {
                padding: 40px 0 48px;
            }
            .page-hero h1 {
                font-size: 26px;
            }
            .page-hero .lead {
                font-size: 15px;
            }
            .section-title {
                font-size: 22px;
            }
            .card-list-title {
                font-size: 17px;
            }
            .cta-panel h3 {
                font-size: 19px;
            }
        }
        @media (max-width: 575.98px) {
            .container-site {
                padding-left: 14px;
                padding-right: 14px;
            }
            .data-strip-grid {
                grid-template-columns: 1fr;
            }
            .hero-stat-inline .stat-item span {
                font-size: 12px;
            }
            .card-list-meta {
                gap: 8px;
                font-size: 12px;
            }
            .read-more {
                font-size: 13px;
            }
            .cta-panel .btn-cta {
                width: 100%;
                justify-content: center;
            }
        }

/* roulang page: category3 */
:root {
            --brand-deep: #1a0b3b;
            --brand-purple: #5b2bd3;
            --brand-purple-light: #7c4ee0;
            --brand-cyan: #00d4e6;
            --brand-orange: #ff6a3d;
            --brand-orange-hover: #ff8257;
            --bg-page: #f5f4fa;
            --bg-card: #ffffff;
            --text-main: #1e1b2e;
            --text-secondary: #5e5a72;
            --text-light: #8a86a0;
            --text-inverse: #ffffff;
            --border-soft: #e6e3f2;
            --border-focus: #5b2bd3;
            --shadow-sm: 0 4px 12px rgba(26, 11, 59, 0.06);
            --shadow-md: 0 8px 24px rgba(26, 11, 59, 0.10);
            --shadow-lg: 0 12px 28px rgba(26, 11, 59, 0.14);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 18px;
            --radius-xl: 24px;
            --transition: 180ms ease;
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', 'Helvetica Neue', Arial, sans-serif;
            --section-pad: 88px;
            --container-max: 1200px;
        }

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

        body {
            font-family: var(--font-sans);
            background: var(--bg-page);
            color: var(--text-main);
            line-height: 1.75;
            margin: 0;
            padding: 0;
            font-size: 16px;
            overflow-x: hidden;
        }

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

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

        a:hover {
            color: var(--brand-purple);
        }

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

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

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

        .section-badge {
            display: inline-block;
            background: linear-gradient(135deg, rgba(91, 43, 211, 0.10), rgba(0, 212, 230, 0.10));
            color: var(--brand-purple);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: 999px;
            letter-spacing: 0.5px;
            margin-bottom: 16px;
            border: 1px solid rgba(91, 43, 211, 0.18);
        }

        .section-title {
            font-size: 30px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 14px;
            line-height: 1.35;
            letter-spacing: 0.3px;
        }

        .section-desc {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 720px;
            line-height: 1.8;
            margin-bottom: 36px;
        }

        /* Header */
        .site-header {
            background: linear-gradient(135deg, #1a0b3b 0%, #3d1a8f 45%, #5b2bd3 100%);
            padding: 0;
            position: sticky;
            top: 0;
            z-index: 1030;
            box-shadow: 0 4px 20px rgba(26, 11, 59, 0.22);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 68px;
            padding: 0 20px;
            max-width: var(--container-max);
            margin: 0 auto;
            flex-wrap: wrap;
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            color: #ffffff;
            font-weight: 700;
            font-size: 20px;
            letter-spacing: 1px;
            white-space: nowrap;
        }

        .brand-logo .logo-icon {
            width: 36px;
            height: 36px;
            background: rgba(255, 255, 255, 0.16);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--brand-cyan);
            border: 1px solid rgba(255, 255, 255, 0.2);
        }

        .brand-logo:hover {
            color: #ffffff;
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 4px;
            list-style: none;
            margin: 0;
            padding: 0;
            flex-wrap: wrap;
        }

        .nav-menu li a {
            display: block;
            padding: 10px 14px;
            color: rgba(255, 255, 255, 0.86);
            font-size: 14px;
            font-weight: 500;
            border-radius: 10px;
            transition: background var(--transition), color var(--transition);
            white-space: nowrap;
        }

        .nav-menu li a:hover,
        .nav-menu li a.active {
            background: rgba(255, 255, 255, 0.14);
            color: #ffffff;
        }

        .nav-menu li a.active {
            font-weight: 600;
            box-shadow: inset 0 -2px 0 rgba(255, 255, 255, 0.5);
        }

        .header-cta {
            background: var(--brand-orange);
            color: #ffffff;
            border: none;
            padding: 10px 20px;
            border-radius: 10px;
            font-weight: 600;
            font-size: 14px;
            transition: background var(--transition), transform var(--transition);
            white-space: nowrap;
            display: inline-block;
        }

        .header-cta:hover {
            background: var(--brand-orange-hover);
            color: #ffffff;
            transform: translateY(-1px);
        }

        .navbar-toggler-custom {
            display: none;
            background: rgba(255, 255, 255, 0.14);
            border: 1px solid rgba(255, 255, 255, 0.22);
            color: #ffffff;
            border-radius: 10px;
            padding: 8px 14px;
            font-size: 18px;
            cursor: pointer;
        }

        /* Hero - Video style */
        .hero-video {
            position: relative;
            background: linear-gradient(135deg, #1a0b3b 0%, #3d1a8f 55%, #5b2bd3 100%);
            padding: 80px 0 100px;
            overflow: hidden;
            color: #ffffff;
        }

        .hero-video::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-image: url('/assets/images/c13106d5e9399bdd.jpg');
            background-size: cover;
            background-position: center;
            opacity: 0.18;
            pointer-events: none;
        }

        .hero-video::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(180deg, rgba(26, 11, 59, 0.75) 0%, rgba(26, 11, 59, 0.45) 50%, rgba(26, 11, 59, 0.85) 100%);
            pointer-events: none;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
        }

        .hero-title {
            font-size: 42px;
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 18px;
            letter-spacing: 0.5px;
            color: #ffffff;
        }

        .hero-subtitle {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.82);
            max-width: 640px;
            line-height: 1.8;
            margin-bottom: 30px;
        }

        .hero-cta {
            background: var(--brand-orange);
            color: #ffffff;
            border: none;
            padding: 14px 32px;
            border-radius: 12px;
            font-weight: 600;
            font-size: 16px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: background var(--transition), transform var(--transition);
        }

        .hero-cta:hover {
            background: var(--brand-orange-hover);
            color: #ffffff;
            transform: translateY(-2px);
        }

        .hero-play-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 56px;
            height: 56px;
            background: rgba(255, 255, 255, 0.18);
            border: 2px solid rgba(255, 255, 255, 0.5);
            border-radius: 50%;
            color: #ffffff;
            font-size: 20px;
            margin-left: 16px;
            transition: background var(--transition), transform var(--transition);
            cursor: pointer;
            vertical-align: middle;
        }

        .hero-play-btn:hover {
            background: rgba(255, 255, 255, 0.3);
            transform: scale(1.05);
            color: #ffffff;
        }

        /* Section */
        section {
            padding: 72px 0;
            position: relative;
        }

        /* Cards */
        .card-custom {
            background: var(--bg-card);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
            overflow: hidden;
            height: 100%;
        }

        .card-custom:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
            border-color: rgba(91, 43, 211, 0.25);
        }

        .card-custom .card-body {
            padding: 24px;
        }

        .card-custom .card-title {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text-main);
            line-height: 1.45;
        }

        .card-custom .card-text {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
            margin-bottom: 16px;
        }

        .card-img-top {
            width: 100%;
            height: 200px;
            object-fit: cover;
            background: linear-gradient(135deg, #e8e5f5, #d5d0eb);
        }

        .badge-custom {
            display: inline-block;
            background: linear-gradient(135deg, rgba(91, 43, 211, 0.12), rgba(0, 212, 230, 0.12));
            color: var(--brand-purple);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 999px;
            border: 1px solid rgba(91, 43, 211, 0.18);
            margin-bottom: 8px;
        }

        .badge-orange {
            background: linear-gradient(135deg, rgba(255, 106, 61, 0.14), rgba(255, 130, 87, 0.14));
            color: var(--brand-orange);
            border-color: rgba(255, 106, 61, 0.22);
        }

        .badge-cyan {
            background: linear-gradient(135deg, rgba(0, 212, 230, 0.12), rgba(0, 180, 200, 0.12));
            color: #008e9b;
            border-color: rgba(0, 212, 230, 0.22);
        }

        .btn-primary-custom {
            background: linear-gradient(135deg, var(--brand-purple), var(--brand-purple-light));
            color: #ffffff;
            border: none;
            border-radius: var(--radius-sm);
            padding: 10px 22px;
            font-weight: 600;
            font-size: 14px;
            transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
            display: inline-block;
        }

        .btn-primary-custom:hover {
            background: linear-gradient(135deg, #4a22b8, #6c3ed8);
            color: #ffffff;
            transform: translateY(-1px);
            box-shadow: 0 6px 18px rgba(91, 43, 211, 0.3);
        }

        .btn-outline-custom {
            background: transparent;
            color: var(--brand-purple);
            border: 1.5px solid var(--brand-purple);
            border-radius: var(--radius-sm);
            padding: 9px 20px;
            font-weight: 600;
            font-size: 14px;
            transition: background var(--transition), color var(--transition), transform var(--transition);
            display: inline-block;
        }

        .btn-outline-custom:hover {
            background: rgba(91, 43, 211, 0.08);
            color: var(--brand-purple);
            transform: translateY(-1px);
        }

        .btn-orange-custom {
            background: var(--brand-orange);
            color: #ffffff;
            border: none;
            border-radius: var(--radius-sm);
            padding: 10px 22px;
            font-weight: 600;
            font-size: 14px;
            transition: background var(--transition), transform var(--transition);
            display: inline-block;
        }

        .btn-orange-custom:hover {
            background: var(--brand-orange-hover);
            color: #ffffff;
            transform: translateY(-1px);
        }

        /* Data badge row */
        .data-badge-row {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-bottom: 24px;
        }

        .data-pill {
            background: #ffffff;
            border: 1px solid var(--border-soft);
            border-radius: 999px;
            padding: 8px 18px;
            font-size: 13px;
            font-weight: 600;
            color: var(--text-secondary);
            transition: all var(--transition);
            cursor: default;
        }

        .data-pill:hover {
            border-color: var(--brand-purple);
            color: var(--brand-purple);
            background: rgba(91, 43, 211, 0.04);
        }

        .data-pill .num {
            color: var(--brand-purple);
            font-weight: 700;
            font-size: 15px;
        }

        /* Ranking list */
        .rank-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .rank-item {
            display: flex;
            align-items: center;
            gap: 18px;
            padding: 16px 20px;
            background: #ffffff;
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
        }

        .rank-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateX(4px);
            border-color: rgba(91, 43, 211, 0.2);
        }

        .rank-number {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 15px;
            flex-shrink: 0;
        }

        .rank-1 {
            background: linear-gradient(135deg, #ffd700, #ffb300);
            color: #1a0b3b;
        }

        .rank-2 {
            background: linear-gradient(135deg, #c0c0c0, #a8a8a8);
            color: #1a0b3b;
        }

        .rank-3 {
            background: linear-gradient(135deg, #cd7f32, #b8722a);
            color: #ffffff;
        }

        .rank-other {
            background: rgba(91, 43, 211, 0.08);
            color: var(--brand-purple);
        }

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

        .rank-name {
            font-weight: 700;
            font-size: 16px;
            margin-bottom: 2px;
            color: var(--text-main);
        }

        .rank-desc {
            font-size: 13px;
            color: var(--text-light);
        }

        .rank-stat {
            font-weight: 700;
            font-size: 18px;
            color: var(--brand-purple);
            white-space: nowrap;
        }

        /* FAQ Accordion */
        .accordion-custom .accordion-item {
            background: #ffffff;
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-md) !important;
            margin-bottom: 12px;
            overflow: hidden;
        }

        .accordion-custom .accordion-button {
            background: #ffffff;
            color: var(--text-main);
            font-weight: 600;
            font-size: 16px;
            padding: 18px 22px;
            border: none;
            box-shadow: none;
            border-radius: var(--radius-md) !important;
        }

        .accordion-custom .accordion-button:not(.collapsed) {
            background: rgba(91, 43, 211, 0.04);
            color: var(--brand-purple);
            box-shadow: none;
        }

        .accordion-custom .accordion-button:focus {
            box-shadow: 0 0 0 2px rgba(91, 43, 211, 0.2);
            border-color: var(--border-focus);
        }

        .accordion-custom .accordion-body {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
            padding: 18px 22px 22px;
        }

        /* CTA banner */
        .cta-banner {
            background: linear-gradient(135deg, #1a0b3b 0%, #3d1a8f 50%, #5b2bd3 100%);
            border-radius: var(--radius-xl);
            padding: 48px 40px;
            color: #ffffff;
            position: relative;
            overflow: hidden;
        }

        .cta-banner::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 220px;
            height: 220px;
            background: radial-gradient(circle, rgba(0, 212, 230, 0.25) 0%, transparent 70%);
            pointer-events: none;
        }

        .cta-banner::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: -40px;
            width: 180px;
            height: 180px;
            background: radial-gradient(circle, rgba(255, 106, 61, 0.2) 0%, transparent 70%);
            pointer-events: none;
        }

        .cta-banner h3 {
            font-size: 26px;
            font-weight: 700;
            margin-bottom: 10px;
            position: relative;
            z-index: 1;
        }

        .cta-banner p {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.82);
            max-width: 560px;
            margin-bottom: 22px;
            position: relative;
            z-index: 1;
        }

        .cta-banner .btn-orange-custom {
            position: relative;
            z-index: 1;
        }

        /* Footer */
        .site-footer {
            background: #1a0b3b;
            color: rgba(255, 255, 255, 0.72);
            padding: 56px 0 28px;
            margin-top: 40px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 36px;
        }

        .footer-brand {
            font-size: 20px;
            font-weight: 700;
            color: #ffffff;
            letter-spacing: 1px;
            margin-bottom: 12px;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            margin-top: 10px;
            color: rgba(255, 255, 255, 0.62);
            font-weight: 400;
        }

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

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

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

        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.65);
            font-size: 14px;
            transition: color var(--transition);
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 10px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.65);
            transition: color var(--transition);
        }

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

        /* Responsive */
        @media (max-width: 991.98px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .hero-title {
                font-size: 34px;
            }
            .section-title {
                font-size: 26px;
            }
        }

        @media (max-width: 767.98px) {
            .header-inner {
                padding: 0 16px;
                min-height: 60px;
            }
            .navbar-toggler-custom {
                display: block;
            }
            .nav-menu {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: flex-start;
                padding: 12px 0 16px;
                gap: 2px;
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-menu li {
                width: 100%;
            }
            .nav-menu li a {
                padding: 12px 16px;
                width: 100%;
            }
            .header-cta {
                display: none;
            }
            .mobile-visible {
                display: block !important;
                width: 100%;
                text-align: center;
                margin-top: 6px;
            }
            .hero-video {
                padding: 48px 0 60px;
            }
            .hero-title {
                font-size: 28px;
            }
            .hero-subtitle {
                font-size: 15px;
            }
            .hero-cta {
                padding: 12px 24px;
                font-size: 14px;
            }
            .hero-play-btn {
                width: 46px;
                height: 46px;
                font-size: 16px;
                margin-left: 10px;
            }
            section {
                padding: 44px 0;
            }
            .section-title {
                font-size: 22px;
            }
            .section-desc {
                font-size: 14px;
            }
            .card-img-top {
                height: 160px;
            }
            .container-site {
                padding-left: 16px;
                padding-right: 16px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 22px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .cta-banner {
                padding: 36px 24px;
            }
            .cta-banner h3 {
                font-size: 22px;
            }
            .rank-item {
                flex-wrap: wrap;
                gap: 10px;
            }
            .rank-stat {
                font-size: 15px;
            }
            .data-badge-row {
                gap: 8px;
            }
            .data-pill {
                padding: 6px 14px;
                font-size: 12px;
            }
        }

        @media (max-width: 575.98px) {
            .hero-title {
                font-size: 24px;
            }
            .hero-subtitle {
                font-size: 14px;
            }
            .card-custom .card-body {
                padding: 18px;
            }
            .card-custom .card-title {
                font-size: 16px;
            }
            .section-title {
                font-size: 20px;
            }
            .btn-primary-custom,
            .btn-outline-custom,
            .btn-orange-custom {
                padding: 8px 18px;
                font-size: 13px;
            }
        }

/* roulang page: category2 */
:root {
            --brand-deep: #1a0b3b;
            --brand-purple: #5b2bd3;
            --brand-purple-light: #7c4ee0;
            --brand-cyan: #00d4e6;
            --brand-orange: #ff6a3d;
            --brand-orange-hover: #ff8257;
            --bg-page: #f5f4fa;
            --bg-card: #ffffff;
            --text-main: #1e1b2e;
            --text-secondary: #5e5a72;
            --text-light: #8a86a0;
            --text-inverse: #ffffff;
            --border-soft: #e6e3f2;
            --border-focus: #5b2bd3;
            --shadow-sm: 0 4px 12px rgba(26, 11, 59, 0.06);
            --shadow-md: 0 8px 24px rgba(26, 11, 59, 0.10);
            --shadow-lg: 0 12px 28px rgba(26, 11, 59, 0.14);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 18px;
            --radius-xl: 24px;
            --transition: 180ms ease;
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', 'Helvetica Neue', Arial, sans-serif;
            --section-pad: 88px;
            --container-max: 1200px;
        }

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

        body {
            font-family: var(--font-sans);
            background: var(--bg-page);
            color: var(--text-main);
            line-height: 1.75;
            margin: 0;
            padding: 0;
            font-size: 16px;
            overflow-x: hidden;
        }

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

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--brand-purple);
        }

        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--brand-orange);
            outline-offset: 2px;
            border-radius: var(--radius-sm);
        }

        section {
            padding: var(--section-pad) 0;
            position: relative;
        }

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

        .section-badge {
            display: inline-block;
            background: linear-gradient(135deg, rgba(91, 43, 211, 0.10), rgba(0, 212, 230, 0.10));
            color: var(--brand-purple);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: 999px;
            letter-spacing: 0.5px;
            margin-bottom: 16px;
            border: 1px solid rgba(91, 43, 211, 0.18);
        }

        .section-title {
            font-size: 30px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 14px;
            line-height: 1.35;
            letter-spacing: 0.3px;
        }

        .section-desc {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 720px;
            line-height: 1.8;
            margin-bottom: 36px;
        }

        /* ============ HEADER ============ */
        .site-header {
            background: linear-gradient(135deg, #1a0b3b 0%, #3d1a8f 45%, #5b2bd3 100%);
            padding: 0;
            position: sticky;
            top: 0;
            z-index: 1030;
            box-shadow: 0 4px 20px rgba(26, 11, 59, 0.22);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 68px;
            padding: 0 20px;
            max-width: var(--container-max);
            margin: 0 auto;
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            color: #ffffff;
            font-weight: 700;
            font-size: 20px;
            letter-spacing: 1px;
            white-space: nowrap;
        }
        .brand-logo .logo-icon {
            width: 36px;
            height: 36px;
            background: rgba(255, 255, 255, 0.16);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--brand-cyan);
            border: 1px solid rgba(255, 255, 255, 0.2);
        }
        .brand-logo:hover {
            color: #ffffff;
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 4px;
            list-style: none;
            margin: 0;
            padding: 0;
            flex-wrap: wrap;
        }
        .nav-menu li a {
            display: block;
            padding: 10px 16px;
            color: rgba(255, 255, 255, 0.86);
            font-size: 15px;
            font-weight: 500;
            border-radius: 10px;
            transition: background var(--transition), color var(--transition);
            white-space: nowrap;
        }
        .nav-menu li a:hover,
        .nav-menu li a.active {
            background: rgba(255, 255, 255, 0.14);
            color: #ffffff;
            text-decoration: none;
        }
        .nav-menu li a.active {
            font-weight: 600;
            box-shadow: inset 0 -2px 0 rgba(255, 255, 255, 0.5);
        }

        .header-cta {
            background: var(--brand-orange);
            color: #ffffff;
            border: none;
            padding: 10px 22px;
            border-radius: 10px;
            font-weight: 600;
            font-size: 14px;
            transition: background var(--transition), transform var(--transition);
            white-space: nowrap;
            display: inline-block;
        }
        .header-cta:hover {
            background: var(--brand-orange-hover);
            color: #ffffff;
            transform: translateY(-1px);
        }

        .navbar-toggler-custom {
            display: none;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: #ffffff;
            width: 42px;
            height: 42px;
            border-radius: 10px;
            font-size: 18px;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: background var(--transition);
        }
        .navbar-toggler-custom:hover {
            background: rgba(255, 255, 255, 0.22);
        }

        .mobile-visible {
            display: none;
        }

        /* ============ PAGE HEADER ============ */
        .page-header-section {
            background: linear-gradient(135deg, #1a0b3b 0%, #281457 40%, #46209e 75%, #5b2bd3 100%);
            padding: 64px 0 56px;
            position: relative;
            overflow: hidden;
        }
        .page-header-section::before {
            content: '';
            position: absolute;
            top: -120px;
            right: -80px;
            width: 420px;
            height: 420px;
            background: radial-gradient(circle, rgba(0, 212, 230, 0.18) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .page-header-section::after {
            content: '';
            position: absolute;
            bottom: -140px;
            left: -60px;
            width: 360px;
            height: 360px;
            background: radial-gradient(circle, rgba(255, 106, 61, 0.16) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .page-header-content {
            position: relative;
            z-index: 2;
        }
        .page-header-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(0, 212, 230, 0.14);
            color: var(--brand-cyan);
            font-size: 13px;
            font-weight: 600;
            padding: 7px 18px;
            border-radius: 999px;
            margin-bottom: 18px;
            border: 1px solid rgba(0, 212, 230, 0.28);
            letter-spacing: 0.6px;
        }
        .page-header-title {
            font-size: 38px;
            font-weight: 800;
            color: #ffffff;
            margin-bottom: 16px;
            line-height: 1.3;
            letter-spacing: 0.5px;
        }
        .page-header-desc {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.82);
            max-width: 760px;
            line-height: 1.85;
            margin-bottom: 0;
        }
        .page-header-meta {
            display: flex;
            align-items: center;
            gap: 24px;
            margin-top: 22px;
            flex-wrap: wrap;
        }
        .page-header-meta span {
            color: rgba(255, 255, 255, 0.72);
            font-size: 14px;
            display: flex;
            align-items: center;
            gap: 7px;
        }
        .page-header-meta i {
            color: var(--brand-cyan);
        }

        /* ============ BREADCRUMB ============ */
        .breadcrumb-bar {
            background: #ffffff;
            border-bottom: 1px solid var(--border-soft);
            padding: 12px 0;
        }
        .breadcrumb-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-light);
            flex-wrap: wrap;
        }
        .breadcrumb-nav a {
            color: var(--text-secondary);
            transition: color var(--transition);
        }
        .breadcrumb-nav a:hover {
            color: var(--brand-purple);
        }
        .breadcrumb-nav .sep {
            color: #c9c5dc;
            font-size: 12px;
        }
        .breadcrumb-nav .current {
            color: var(--brand-purple);
            font-weight: 600;
        }

        /* ============ ARTICLE LIST ============ */
        .article-list-section {
            padding-top: 56px;
            padding-bottom: 56px;
        }
        .article-list-header {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            margin-bottom: 32px;
            flex-wrap: wrap;
            gap: 16px;
        }
        .article-list-header .section-title {
            margin-bottom: 8px;
        }
        .article-list-header .count-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: linear-gradient(135deg, rgba(91, 43, 211, 0.08), rgba(0, 212, 230, 0.08));
            color: var(--brand-purple);
            font-size: 13px;
            font-weight: 600;
            padding: 5px 14px;
            border-radius: 999px;
            border: 1px solid rgba(91, 43, 211, 0.16);
        }
        .article-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-soft);
            padding: 0;
            overflow: hidden;
            transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
            display: flex;
            flex-direction: column;
            height: 100%;
        }
        .article-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: rgba(91, 43, 211, 0.22);
        }
        .article-card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            display: block;
            background: #e8e5f5;
        }
        .article-card-body {
            padding: 22px 24px 24px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .article-card-date {
            font-size: 13px;
            color: var(--text-light);
            display: flex;
            align-items: center;
            gap: 6px;
            margin-bottom: 10px;
        }
        .article-card-date i {
            color: var(--brand-purple);
        }
        .article-card-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-main);
            line-height: 1.5;
            margin-bottom: 10px;
            display: block;
            transition: color var(--transition);
        }
        .article-card-title:hover {
            color: var(--brand-purple);
        }
        .article-card-excerpt {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 16px;
            flex: 1;
        }
        .article-card-link {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            font-size: 14px;
            font-weight: 600;
            color: var(--brand-purple);
            transition: gap var(--transition), color var(--transition);
        }
        .article-card-link:hover {
            color: var(--brand-orange);
            gap: 10px;
        }
        .article-card-link i {
            font-size: 13px;
        }

        /* ============ DATA SNAPSHOT ============ */
        .data-snapshot-section {
            background: #ffffff;
            padding: 56px 0;
            border-top: 1px solid var(--border-soft);
            border-bottom: 1px solid var(--border-soft);
        }
        .data-snapshot-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .snapshot-card {
            background: var(--bg-page);
            border-radius: var(--radius-lg);
            padding: 24px 20px;
            text-align: center;
            border: 1px solid var(--border-soft);
            transition: box-shadow var(--transition), transform var(--transition);
        }
        .snapshot-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .snapshot-value {
            font-size: 34px;
            font-weight: 800;
            background: linear-gradient(135deg, var(--brand-purple) 0%, var(--brand-cyan) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.25;
            margin-bottom: 6px;
        }
        .snapshot-label {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 4px;
        }
        .snapshot-sub {
            font-size: 12px;
            color: var(--text-light);
        }
        .snapshot-badge {
            display: inline-block;
            background: linear-gradient(135deg, rgba(255, 106, 61, 0.12), rgba(0, 212, 230, 0.12));
            color: var(--brand-orange);
            font-size: 11px;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: 999px;
            margin-top: 8px;
        }

        /* ============ HOT TAGS ============ */
        .hot-tags-section {
            padding: 48px 0;
        }
        .tags-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        .tags-cloud a {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            background: #ffffff;
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-md);
            padding: 9px 18px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition);
        }
        .tags-cloud a:hover {
            border-color: var(--brand-purple);
            color: var(--brand-purple);
            box-shadow: var(--shadow-sm);
            transform: translateY(-1px);
        }
        .tags-cloud a i {
            color: var(--brand-cyan);
            font-size: 12px;
        }
        .tags-cloud a .tag-count {
            background: rgba(91, 43, 211, 0.08);
            color: var(--brand-purple);
            font-size: 12px;
            font-weight: 600;
            padding: 1px 8px;
            border-radius: 999px;
        }

        /* ============ METRIC STRIP ============ */
        .metric-strip-section {
            background: linear-gradient(135deg, #1a0b3b 0%, #3d1a8f 50%, #5b2bd3 100%);
            padding: 40px 0;
            position: relative;
            overflow: hidden;
        }
        .metric-strip-section::after {
            content: '';
            position: absolute;
            top: -80px;
            right: -40px;
            width: 280px;
            height: 280px;
            background: radial-gradient(circle, rgba(0, 212, 230, 0.16) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .metric-strip-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 16px;
            position: relative;
            z-index: 2;
        }
        .metric-strip-item {
            text-align: center;
            padding: 16px 12px;
            border-radius: var(--radius-md);
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.12);
            transition: background var(--transition);
        }
        .metric-strip-item:hover {
            background: rgba(255, 255, 255, 0.14);
        }
        .metric-strip-value {
            font-size: 24px;
            font-weight: 800;
            color: var(--brand-cyan);
            line-height: 1.3;
        }
        .metric-strip-label {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.78);
            margin-top: 2px;
        }

        /* ============ FAQ ============ */
        .faq-section {
            padding: 56px 0;
        }
        .accordion-custom {
            border: none;
        }
        .accordion-custom .accordion-item {
            background: #ffffff;
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-lg) !important;
            margin-bottom: 14px;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition);
        }
        .accordion-custom .accordion-item:hover {
            box-shadow: var(--shadow-md);
        }
        .accordion-custom .accordion-button {
            background: #ffffff;
            color: var(--text-main);
            font-weight: 600;
            font-size: 16px;
            padding: 18px 24px;
            border-radius: var(--radius-lg) !important;
            transition: background var(--transition), color var(--transition);
        }
        .accordion-custom .accordion-button:not(.collapsed) {
            background: linear-gradient(135deg, rgba(91, 43, 211, 0.04), rgba(0, 212, 230, 0.04));
            color: var(--brand-purple);
            box-shadow: none;
        }
        .accordion-custom .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(91, 43, 211, 0.15);
            border-color: var(--border-focus);
        }
        .accordion-custom .accordion-button::after {
            background-image: none;
            content: '\f078';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 13px;
            color: var(--text-light);
            width: auto;
            height: auto;
            margin-left: auto;
            transition: transform var(--transition);
        }
        .accordion-custom .accordion-button:not(.collapsed)::after {
            transform: rotate(180deg);
            color: var(--brand-purple);
        }
        .accordion-custom .accordion-body {
            padding: 16px 24px 20px;
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.85;
            background: #fafaff;
        }

        /* ============ CTA ============ */
        .cta-section {
            background: linear-gradient(135deg, #1a0b3b 0%, #281457 40%, #4a1fa6 75%, #5b2bd3 100%);
            padding: 56px 0;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            left: -40px;
            width: 320px;
            height: 320px;
            background: radial-gradient(circle, rgba(0, 212, 230, 0.20) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-content {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .cta-title {
            font-size: 28px;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 12px;
            line-height: 1.4;
        }
        .cta-desc {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.78);
            max-width: 560px;
            margin: 0 auto 28px;
            line-height: 1.8;
        }
        .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: var(--brand-orange);
            color: #ffffff;
            border: none;
            padding: 14px 32px;
            border-radius: 12px;
            font-size: 16px;
            font-weight: 700;
            transition: background var(--transition), transform var(--transition);
            cursor: pointer;
        }
        .cta-btn:hover {
            background: var(--brand-orange-hover);
            color: #ffffff;
            transform: translateY(-2px);
        }
        .cta-btn i {
            font-size: 15px;
        }

        /* ============ FOOTER ============ */
        .site-footer {
            background: #160930;
            color: rgba(255, 255, 255, 0.72);
            padding: 56px 0 0;
            margin-top: 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 36px;
            padding-bottom: 36px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-brand {
            font-size: 20px;
            font-weight: 700;
            color: #ffffff;
            letter-spacing: 1px;
            margin-bottom: 14px;
        }
        .footer-brand p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.62);
            line-height: 1.8;
            margin-top: 12px;
            max-width: 280px;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #ffffff;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.62);
            font-size: 14px;
            transition: color var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--brand-cyan);
        }
        .footer-bottom {
            padding: 20px 0 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.48);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.48);
            transition: color var(--transition);
        }
        .footer-bottom a:hover {
            color: var(--brand-cyan);
        }

        /* ============ RESPONSIVE ============ */
        @media (max-width: 991.98px) {
            .data-snapshot-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .metric-strip-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }

        @media (max-width: 767.98px) {
            .navbar-toggler-custom {
                display: flex;
            }
            .nav-menu {
                display: none;
                position: absolute;
                top: 68px;
                left: 0;
                right: 0;
                background: linear-gradient(135deg, #1a0b3b 0%, #3d1a8f 60%, #5b2bd3 100%);
                flex-direction: column;
                align-items: stretch;
                padding: 12px 16px;
                gap: 2px;
                border-top: 1px solid rgba(255, 255, 255, 0.12);
                box-shadow: 0 12px 28px rgba(26, 11, 59, 0.28);
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-menu li a {
                padding: 12px 16px;
                font-size: 15px;
                border-radius: 8px;
            }
            .header-cta {
                display: none;
            }
            .mobile-visible {
                display: block;
                text-align: center;
                margin-top: 8px;
            }

            .page-header-title {
                font-size: 28px;
            }
            .page-header-desc {
                font-size: 15px;
            }
            .page-header-meta {
                gap: 14px;
                flex-direction: column;
                align-items: flex-start;
            }

            .article-list-header {
                flex-direction: column;
                align-items: flex-start;
            }
            .section-title {
                font-size: 24px;
            }
            .article-card-img {
                height: 160px;
            }
            .article-card-body {
                padding: 18px 18px 20px;
            }

            .data-snapshot-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .metric-strip-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 10px;
            }
            .metric-strip-value {
                font-size: 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
            .cta-title {
                font-size: 22px;
            }
            .cta-btn {
                padding: 12px 24px;
                font-size: 14px;
            }
        }

        @media (max-width: 575.98px) {
            :root {
                --section-pad: 44px;
            }
            .container-site {
                padding-left: 16px;
                padding-right: 16px;
            }
            .page-header-section {
                padding: 44px 0 40px;
            }
            .page-header-title {
                font-size: 24px;
            }
            .section-title {
                font-size: 20px;
            }
            .article-card-title {
                font-size: 16px;
            }
            .metric-strip-grid {
                grid-template-columns: 1fr 1fr;
            }
            .tags-cloud a {
                padding: 7px 13px;
                font-size: 13px;
            }
            .accordion-custom .accordion-button {
                font-size: 14px;
                padding: 14px 18px;
            }
            .accordion-custom .accordion-body {
                padding: 12px 18px 16px;
                font-size: 14px;
            }
        }

/* roulang page: category5 */
:root {
            --brand-deep: #1a0b3b;
            --brand-purple: #5b2bd3;
            --brand-purple-light: #7c4ee0;
            --brand-cyan: #00d4e6;
            --brand-orange: #ff6a3d;
            --brand-orange-hover: #ff8257;
            --bg-page: #f5f4fa;
            --bg-card: #ffffff;
            --text-main: #1e1b2e;
            --text-secondary: #5e5a72;
            --text-light: #8a86a0;
            --text-inverse: #ffffff;
            --border-soft: #e6e3f2;
            --border-focus: #5b2bd3;
            --shadow-sm: 0 4px 12px rgba(26, 11, 59, 0.06);
            --shadow-md: 0 8px 24px rgba(26, 11, 59, 0.10);
            --shadow-lg: 0 12px 28px rgba(26, 11, 59, 0.14);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 18px;
            --radius-xl: 24px;
            --transition: 180ms ease;
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', 'Helvetica Neue', Arial, sans-serif;
            --section-pad: 88px;
            --container-max: 1200px;
        }

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

        body {
            font-family: var(--font-sans);
            background: var(--bg-page);
            color: var(--text-main);
            line-height: 1.75;
            margin: 0;
            padding: 0;
            font-size: 16px;
            overflow-x: hidden;
        }

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

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition), background var(--transition), transform var(--transition), box-shadow var(--transition);
        }

        a:hover {
            color: var(--brand-purple);
        }

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

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

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

        .section-badge {
            display: inline-block;
            background: linear-gradient(135deg, rgba(91, 43, 211, 0.10), rgba(0, 212, 230, 0.10));
            color: var(--brand-purple);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: 999px;
            letter-spacing: 0.5px;
            margin-bottom: 16px;
            border: 1px solid rgba(91, 43, 211, 0.18);
        }

        .section-title {
            font-size: 30px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 14px;
            line-height: 1.35;
            letter-spacing: 0.3px;
        }

        .section-desc {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 720px;
            line-height: 1.8;
            margin-bottom: 36px;
        }

        .text-gradient {
            background: linear-gradient(135deg, var(--brand-purple), var(--brand-cyan));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        /* ============ HEADER ============ */
        .site-header {
            background: linear-gradient(135deg, #1a0b3b 0%, #3d1a8f 45%, #5b2bd3 100%);
            padding: 0;
            position: sticky;
            top: 0;
            z-index: 1030;
            box-shadow: 0 4px 20px rgba(26, 11, 59, 0.22);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 68px;
            padding: 0 20px;
            max-width: var(--container-max);
            margin: 0 auto;
            gap: 16px;
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            color: #ffffff;
            font-weight: 700;
            font-size: 20px;
            letter-spacing: 1px;
            white-space: nowrap;
        }

        .brand-logo .logo-icon {
            width: 36px;
            height: 36px;
            background: rgba(255, 255, 255, 0.16);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--brand-cyan);
            border: 1px solid rgba(255, 255, 255, 0.2);
        }

        .brand-logo:hover {
            color: #ffffff;
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 4px;
            list-style: none;
            margin: 0;
            padding: 0;
            flex-wrap: wrap;
        }

        .nav-menu li a {
            display: block;
            padding: 10px 16px;
            color: rgba(255, 255, 255, 0.86);
            font-size: 15px;
            font-weight: 500;
            border-radius: 10px;
            transition: background var(--transition), color var(--transition);
            white-space: nowrap;
        }

        .nav-menu li a:hover,
        .nav-menu li a.active {
            background: rgba(255, 255, 255, 0.14);
            color: #ffffff;
            text-decoration: none;
        }

        .nav-menu li a.active {
            font-weight: 600;
            box-shadow: inset 0 -2px 0 rgba(255, 255, 255, 0.5);
        }

        .header-cta {
            background: var(--brand-orange);
            color: #ffffff;
            border: none;
            padding: 10px 22px;
            border-radius: 10px;
            font-weight: 600;
            font-size: 15px;
            transition: background var(--transition), transform var(--transition);
            white-space: nowrap;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .header-cta:hover {
            background: var(--brand-orange-hover);
            color: #ffffff;
            transform: translateY(-1px);
        }

        .navbar-toggler-custom {
            display: none;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.22);
            color: #ffffff;
            width: 42px;
            height: 42px;
            border-radius: 10px;
            font-size: 20px;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: background var(--transition);
        }

        .navbar-toggler-custom:hover {
            background: rgba(255, 255, 255, 0.22);
        }

        .mobile-visible {
            display: none;
        }

        /* ============ CATEGORY HERO ============ */
        .category-hero {
            background: linear-gradient(135deg, #1a0b3b 0%, #2d125e 40%, #4a20a8 70%, #5b2bd3 100%);
            position: relative;
            overflow: hidden;
            padding: 68px 0 60px;
        }

        .category-hero::before {
            content: '';
            position: absolute;
            top: -40%;
            right: -10%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(0, 212, 230, 0.18), transparent 65%);
            border-radius: 50%;
            pointer-events: none;
        }

        .category-hero::after {
            content: '';
            position: absolute;
            bottom: -50%;
            left: -5%;
            width: 450px;
            height: 450px;
            background: radial-gradient(circle, rgba(255, 106, 61, 0.14), transparent 65%);
            border-radius: 50%;
            pointer-events: none;
        }

        .category-hero .container-site {
            position: relative;
            z-index: 2;
        }

        .category-hero-content {
            max-width: 760px;
        }

        .category-hero .section-badge {
            background: rgba(255, 255, 255, 0.12);
            color: var(--brand-cyan);
            border-color: rgba(0, 212, 230, 0.3);
            font-size: 13px;
            letter-spacing: 0.8px;
        }

        .category-hero h1 {
            font-size: 40px;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 16px;
            line-height: 1.3;
            letter-spacing: 0.5px;
        }

        .category-hero .hero-desc {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.82);
            line-height: 1.85;
            max-width: 650px;
            margin-bottom: 0;
        }

        .category-hero .hero-stats-mini {
            display: flex;
            gap: 28px;
            margin-top: 24px;
            flex-wrap: wrap;
        }

        .hero-stat-mini {
            display: flex;
            align-items: center;
            gap: 8px;
            color: rgba(255, 255, 255, 0.85);
            font-size: 14px;
            font-weight: 500;
        }

        .hero-stat-mini i {
            color: var(--brand-cyan);
            font-size: 16px;
        }

        /* ============ DATA CARDS ============ */
        .data-cards-section {
            padding: 56px 0 48px;
            background: var(--bg-page);
        }

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

        .data-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 24px 22px;
            border: 1px solid var(--border-soft);
            box-shadow: var(--shadow-sm);
            transition: transform var(--transition), box-shadow var(--transition);
            position: relative;
            overflow: hidden;
        }

        .data-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--brand-purple), var(--brand-cyan));
            border-radius: 0 0 0 0;
        }

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

        .data-card .data-value {
            font-size: 38px;
            font-weight: 800;
            background: linear-gradient(135deg, var(--brand-purple), var(--brand-cyan));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.2;
            margin-bottom: 6px;
        }

        .data-card .data-label {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 12px;
        }

        .data-card .data-badge {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            background: linear-gradient(135deg, rgba(91, 43, 211, 0.10), rgba(0, 212, 230, 0.10));
            color: var(--brand-purple);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 999px;
            border: 1px solid rgba(91, 43, 211, 0.15);
        }

        .data-card .data-trend {
            font-size: 13px;
            color: var(--text-light);
            margin-top: 10px;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .data-trend.up {
            color: #16a34a;
        }
        .data-trend.down {
            color: #dc2626;
        }

        /* ============ ARTICLE LIST ============ */
        .article-list-section {
            padding: 56px 0 60px;
            background: #ffffff;
            border-top: 1px solid var(--border-soft);
        }

        .article-list-header {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 24px;
            margin-bottom: 28px;
            flex-wrap: wrap;
        }

        .article-list-header .section-title {
            margin-bottom: 6px;
        }
        .article-list-header .section-desc {
            margin-bottom: 0;
        }

        .article-card {
            display: flex;
            gap: 20px;
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-soft);
            box-shadow: var(--shadow-sm);
            padding: 16px;
            margin-bottom: 16px;
            transition: transform var(--transition), box-shadow var(--transition);
        }

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

        .article-card .article-thumb {
            flex: 0 0 220px;
            height: 150px;
            border-radius: var(--radius-md);
            overflow: hidden;
            background: #f0eef8;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .article-card .article-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .article-card .article-thumb .thumb-placeholder {
            color: var(--text-light);
            font-size: 32px;
        }

        .article-card .article-body {
            flex: 1;
            display: flex;
            flex-direction: column;
            justify-content: center;
            min-width: 0;
        }

        .article-card .article-date {
            font-size: 13px;
            color: var(--text-light);
            margin-bottom: 6px;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .article-card .article-date i {
            color: var(--brand-purple-light);
        }

        .article-card .article-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 8px;
            line-height: 1.45;
            transition: color var(--transition);
        }

        .article-card .article-title:hover {
            color: var(--brand-purple);
        }

        .article-card .article-excerpt {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
            margin-bottom: 10px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .article-card .article-more {
            font-size: 14px;
            font-weight: 600;
            color: var(--brand-purple);
            display: inline-flex;
            align-items: center;
            gap: 5px;
            transition: color var(--transition), gap var(--transition);
        }

        .article-card .article-more:hover {
            color: var(--brand-orange);
            gap: 8px;
        }

        .article-load-more {
            text-align: center;
            margin-top: 28px;
        }

        .btn-outline-brand {
            background: transparent;
            border: 1.5px solid var(--brand-purple);
            color: var(--brand-purple);
            padding: 12px 28px;
            border-radius: 10px;
            font-weight: 600;
            font-size: 15px;
            transition: background var(--transition), color var(--transition), transform var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-outline-brand:hover {
            background: var(--brand-purple);
            color: #ffffff;
            transform: translateY(-2px);
        }

        /* ============ DATA STRIPS ============ */
        .data-strips-section {
            padding: 56px 0;
            background: var(--bg-page);
        }

        .data-strips-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 18px;
        }

        .strip-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 20px 22px;
            border: 1px solid var(--border-soft);
            box-shadow: var(--shadow-sm);
            display: flex;
            align-items: center;
            gap: 16px;
            transition: transform var(--transition), box-shadow var(--transition);
        }

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

        .strip-icon {
            width: 48px;
            height: 48px;
            border-radius: 14px;
            background: linear-gradient(135deg, rgba(91, 43, 211, 0.12), rgba(0, 212, 230, 0.12));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--brand-purple);
            flex-shrink: 0;
            border: 1px solid rgba(91, 43, 211, 0.14);
        }

        .strip-content h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 3px;
        }

        .strip-content p {
            font-size: 13px;
            color: var(--text-light);
            margin-bottom: 0;
            line-height: 1.5;
        }

        /* ============ FAQ ============ */
        .faq-section {
            padding: 56px 0 60px;
            background: #ffffff;
            border-top: 1px solid var(--border-soft);
        }

        .faq-list {
            max-width: 820px;
            margin: 0 auto;
        }

        .accordion-custom {
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            background: var(--bg-card);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: box-shadow var(--transition);
        }

        .accordion-custom:hover {
            box-shadow: var(--shadow-md);
        }

        .accordion-custom .accordion-header-custom {
            width: 100%;
            background: transparent;
            border: none;
            padding: 18px 22px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            text-align: left;
            transition: background var(--transition);
            gap: 12px;
        }

        .accordion-custom .accordion-header-custom:hover {
            background: rgba(91, 43, 211, 0.04);
        }

        .accordion-custom .accordion-header-custom i {
            color: var(--brand-purple);
            font-size: 14px;
            transition: transform var(--transition);
            flex-shrink: 0;
        }

        .accordion-custom.active .accordion-header-custom i {
            transform: rotate(180deg);
        }

        .accordion-custom .accordion-body-custom {
            padding: 0 22px 18px;
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            display: none;
        }

        .accordion-custom.active .accordion-body-custom {
            display: block;
        }

        /* ============ TAGS ============ */
        .tags-section {
            padding: 48px 0 52px;
            background: var(--bg-page);
        }

        .tags-wrap {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 20px;
        }

        .tag-pill {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: #ffffff;
            border: 1px solid var(--border-soft);
            color: var(--text-secondary);
            font-size: 14px;
            font-weight: 500;
            padding: 9px 18px;
            border-radius: 999px;
            transition: all var(--transition);
            cursor: pointer;
            box-shadow: var(--shadow-sm);
        }

        .tag-pill i {
            color: var(--brand-purple-light);
            font-size: 13px;
        }

        .tag-pill:hover {
            border-color: var(--brand-purple);
            color: var(--brand-purple);
            background: rgba(91, 43, 211, 0.04);
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
        }

        /* ============ CTA SECTION ============ */
        .cta-section {
            padding: 56px 0 60px;
            background: #ffffff;
            border-top: 1px solid var(--border-soft);
        }

        .cta-banner {
            background: linear-gradient(135deg, #1a0b3b 0%, #3d1a8f 45%, #5b2bd3 100%);
            border-radius: var(--radius-xl);
            padding: 44px 48px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }

        .cta-banner::before {
            content: '';
            position: absolute;
            top: -60%;
            right: -5%;
            width: 380px;
            height: 380px;
            background: radial-gradient(circle, rgba(0, 212, 230, 0.16), transparent 65%);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-banner-content {
            position: relative;
            z-index: 2;
            max-width: 580px;
        }

        .cta-banner h2 {
            font-size: 26px;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 12px;
            line-height: 1.4;
        }

        .cta-banner p {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.8);
            line-height: 1.75;
            margin-bottom: 0;
        }

        .cta-banner .btn-brand-cta {
            background: var(--brand-orange);
            color: #ffffff;
            border: none;
            padding: 14px 32px;
            border-radius: 10px;
            font-weight: 600;
            font-size: 16px;
            transition: background var(--transition), transform var(--transition);
            white-space: nowrap;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            position: relative;
            z-index: 2;
        }

        .cta-banner .btn-brand-cta:hover {
            background: var(--brand-orange-hover);
            color: #ffffff;
            transform: translateY(-2px);
        }

        /* ============ FOOTER ============ */
        .site-footer {
            background: #16092f;
            color: rgba(255, 255, 255, 0.75);
            padding: 52px 0 0;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }

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

        .footer-brand {
            font-size: 22px;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 14px;
            letter-spacing: 1px;
        }

        .footer-brand p {
            font-size: 14px;
            font-weight: 400;
            color: rgba(255, 255, 255, 0.65);
            line-height: 1.8;
            margin-top: 10px;
            letter-spacing: 0;
            max-width: 340px;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #ffffff;
            margin-bottom: 14px;
            letter-spacing: 0.5px;
        }

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

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

        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.65);
            font-size: 14px;
            transition: color var(--transition);
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 18px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.55);
            transition: color var(--transition);
        }
        .footer-bottom a:hover {
            color: var(--brand-cyan);
        }

        /* ============ RESPONSIVE ============ */
        @media (max-width: 991.98px) {
            .data-cards-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .data-strips-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .article-card {
                flex-direction: column;
            }
            .article-card .article-thumb {
                flex: 0 0 auto;
                width: 100%;
                height: 180px;
            }
            .category-hero h1 {
                font-size: 34px;
            }
            .cta-banner {
                flex-direction: column;
                text-align: center;
                padding: 32px 24px;
            }
            .cta-banner h2 {
                font-size: 22px;
            }
        }

        @media (max-width: 767.98px) {
            :root {
                --section-pad: 56px;
            }
            .section-title {
                font-size: 24px;
            }
            .category-hero {
                padding: 44px 0 40px;
            }
            .category-hero h1 {
                font-size: 28px;
            }
            .category-hero .hero-desc {
                font-size: 15px;
            }
            .data-cards-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 14px;
            }
            .data-card .data-value {
                font-size: 30px;
            }
            .data-strips-grid {
                grid-template-columns: 1fr;
            }
            .article-card .article-thumb {
                height: 160px;
            }
            .article-card .article-title {
                font-size: 16px;
            }
            .article-list-header {
                flex-direction: column;
                align-items: flex-start;
            }
            .cta-banner {
                padding: 28px 20px;
                border-radius: var(--radius-lg);
            }
            .cta-banner h2 {
                font-size: 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        @media (max-width: 575.98px) {
            .container-site {
                padding-left: 16px;
                padding-right: 16px;
            }
            .header-inner {
                padding: 0 16px;
                min-height: 60px;
            }
            .brand-logo {
                font-size: 17px;
            }
            .brand-logo .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 15px;
            }
            .nav-menu {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: linear-gradient(145deg, #1a0b3b, #3d1a8f 60%, #5b2bd3);
                flex-direction: column;
                align-items: stretch;
                padding: 14px 16px 20px;
                border-radius: 0 0 18px 18px;
                box-shadow: 0 16px 36px rgba(26, 11, 59, 0.28);
                gap: 2px;
            }
            .nav-menu.show {
                display: flex;
            }
            .nav-menu li a {
                padding: 12px 16px;
                font-size: 15px;
                border-radius: 8px;
                text-align: left;
            }
            .navbar-toggler-custom {
                display: flex;
            }
            .mobile-visible {
                display: block;
            }
            .header-cta:not(.mobile-visible) {
                display: none;
            }
            .header-cta.mobile-visible {
                display: inline-flex;
                margin-top: 6px;
                justify-content: center;
            }
            .data-cards-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .data-card {
                padding: 20px 18px;
            }
            .data-card .data-value {
                font-size: 32px;
            }
            .article-card {
                padding: 12px;
            }
            .article-card .article-thumb {
                height: 140px;
            }
            .article-card .article-excerpt {
                -webkit-line-clamp: 3;
            }
            .category-hero .hero-stats-mini {
                gap: 14px;
            }
            .hero-stat-mini {
                font-size: 12px;
            }
            .accordion-custom .accordion-header-custom {
                padding: 15px 16px;
                font-size: 15px;
            }
            .accordion-custom .accordion-body-custom {
                padding: 0 16px 14px;
                font-size: 14px;
            }
            .tag-pill {
                font-size: 13px;
                padding: 7px 14px;
            }
        }

/* roulang page: category6 */
:root {
            --brand-deep: #1a0b3b;
            --brand-purple: #5b2bd3;
            --brand-purple-light: #7c4ee0;
            --brand-cyan: #00d4e6;
            --brand-orange: #ff6a3d;
            --brand-orange-hover: #ff8257;
            --bg-page: #f5f4fa;
            --bg-card: #ffffff;
            --text-main: #1e1b2e;
            --text-secondary: #5e5a72;
            --text-light: #8a86a0;
            --text-inverse: #ffffff;
            --border-soft: #e6e3f2;
            --border-focus: #5b2bd3;
            --shadow-sm: 0 4px 12px rgba(26, 11, 59, 0.06);
            --shadow-md: 0 8px 24px rgba(26, 11, 59, 0.10);
            --shadow-lg: 0 12px 28px rgba(26, 11, 59, 0.14);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 18px;
            --radius-xl: 24px;
            --transition: 180ms ease;
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', 'Helvetica Neue', Arial, sans-serif;
            --section-pad: 88px;
            --container-max: 1200px;
        }

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

        body {
            font-family: var(--font-sans);
            background: var(--bg-page);
            color: var(--text-main);
            line-height: 1.75;
            margin: 0;
            padding: 0;
            font-size: 16px;
            overflow-x: hidden;
        }

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

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

        a:hover {
            color: var(--brand-purple);
        }

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

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

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

        section {
            padding: var(--section-pad) 0;
            position: relative;
        }

        .section-badge {
            display: inline-block;
            background: linear-gradient(135deg, rgba(91, 43, 211, 0.10), rgba(0, 212, 230, 0.10));
            color: var(--brand-purple);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: 999px;
            letter-spacing: 0.5px;
            margin-bottom: 16px;
            border: 1px solid rgba(91, 43, 211, 0.18);
        }

        .section-title {
            font-size: 30px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 14px;
            line-height: 1.35;
            letter-spacing: 0.3px;
        }

        .section-desc {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 720px;
            line-height: 1.8;
            margin-bottom: 36px;
        }

        /* ============ HEADER ============ */
        .site-header {
            background: linear-gradient(135deg, #1a0b3b 0%, #3d1a8f 45%, #5b2bd3 100%);
            padding: 0;
            position: sticky;
            top: 0;
            z-index: 1030;
            box-shadow: 0 4px 20px rgba(26, 11, 59, 0.22);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 68px;
            padding: 0 20px;
            max-width: var(--container-max);
            margin: 0 auto;
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            color: #ffffff;
            font-weight: 700;
            font-size: 20px;
            letter-spacing: 1px;
            white-space: nowrap;
        }

        .brand-logo .logo-icon {
            width: 36px;
            height: 36px;
            background: rgba(255, 255, 255, 0.16);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--brand-cyan);
            border: 1px solid rgba(255, 255, 255, 0.2);
        }

        .brand-logo:hover {
            color: #ffffff;
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 4px;
            list-style: none;
            margin: 0;
            padding: 0;
            flex-wrap: wrap;
        }

        .nav-menu li a {
            display: block;
            padding: 10px 16px;
            color: rgba(255, 255, 255, 0.86);
            font-size: 15px;
            font-weight: 500;
            border-radius: 10px;
            transition: background var(--transition), color var(--transition);
            white-space: nowrap;
        }

        .nav-menu li a:hover,
        .nav-menu li a.active {
            background: rgba(255, 255, 255, 0.14);
            color: #ffffff;
            text-decoration: none;
        }

        .nav-menu li a.active {
            font-weight: 600;
            box-shadow: inset 0 -2px 0 rgba(255, 255, 255, 0.5);
        }

        .header-cta {
            background: var(--brand-orange);
            color: #ffffff;
            border: none;
            padding: 10px 22px;
            border-radius: 10px;
            font-weight: 600;
            font-size: 15px;
            display: inline-block;
            transition: background var(--transition), transform var(--transition);
            white-space: nowrap;
        }

        .header-cta:hover {
            background: var(--brand-orange-hover);
            color: #ffffff;
            transform: translateY(-1px);
        }

        .nav-menu .mobile-visible {
            display: none;
        }

        .navbar-toggler-custom {
            display: none;
            background: rgba(255, 255, 255, 0.14);
            color: #ffffff;
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 10px;
            width: 40px;
            height: 40px;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            cursor: pointer;
            transition: background var(--transition);
        }

        .navbar-toggler-custom:hover {
            background: rgba(255, 255, 255, 0.24);
        }

        /* ============ PAGE HERO ============ */
        .page-hero {
            background: linear-gradient(135deg, #1a0b3b 0%, #3d1a8f 50%, #5b2bd3 100%);
            padding: 72px 0 96px;
            color: #ffffff;
            position: relative;
            overflow: hidden;
        }

        .page-hero::after {
            content: '';
            position: absolute;
            right: -80px;
            top: -80px;
            width: 320px;
            height: 320px;
            background: rgba(0, 212, 230, 0.18);
            border-radius: 50%;
            filter: blur(60px);
            pointer-events: none;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            left: -60px;
            bottom: -100px;
            width: 260px;
            height: 260px;
            background: rgba(255, 106, 61, 0.15);
            border-radius: 50%;
            filter: blur(70px);
            pointer-events: none;
        }

        .page-hero-inner {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 48px;
            align-items: center;
            position: relative;
            z-index: 2;
        }

        .page-hero h1 {
            font-size: 38px;
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }

        .page-hero .hero-desc {
            font-size: 17px;
            line-height: 1.85;
            color: rgba(255, 255, 255, 0.85);
            max-width: 640px;
            margin-bottom: 24px;
        }

        .hero-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .hero-tag {
            background: rgba(255, 255, 255, 0.12);
            color: #ffffff;
            padding: 6px 18px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 500;
            border: 1px solid rgba(255, 255, 255, 0.18);
            transition: background var(--transition);
        }

        .hero-tag:hover {
            background: rgba(255, 255, 255, 0.22);
            color: #ffffff;
        }

        .hero-stat-card {
            background: rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: var(--radius-xl);
            padding: 28px 30px;
            display: flex;
            flex-direction: column;
            gap: 18px;
        }

        .hero-stat-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
        }

        .hero-stat-row .stat-label {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.75);
        }

        .hero-stat-row .stat-value {
            font-size: 28px;
            font-weight: 700;
            color: #ffffff;
            letter-spacing: 0.5px;
        }

        .hero-stat-row .stat-value.cyan {
            color: var(--brand-cyan);
        }

        .hero-stat-row .stat-value.orange {
            color: var(--brand-orange);
        }

        .hero-stat-divider {
            height: 1px;
            background: rgba(255, 255, 255, 0.15);
        }

        /* ============ RESOURCE LIST ============ */
        .resource-section {
            background: var(--bg-page);
        }

        .resource-item-card {
            background: var(--bg-card);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-xl);
            box-shadow: var(--shadow-sm);
            display: grid;
            grid-template-columns: 200px 1fr;
            overflow: hidden;
            margin-bottom: 20px;
            transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
        }

        .resource-item-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
            border-color: rgba(91, 43, 211, 0.25);
        }

        .resource-item-card .res-img-wrap {
            position: relative;
            min-height: 160px;
            overflow: hidden;
            background: #eae8f4;
        }

        .resource-item-card .res-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 300ms ease;
        }

        .resource-item-card:hover .res-img-wrap img {
            transform: scale(1.03);
        }

        .resource-item-card .res-body {
            padding: 24px 28px;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .res-body .res-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 13px;
            color: var(--text-light);
        }

        .res-body .res-meta .res-date {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .res-body .res-title {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-main);
            line-height: 1.4;
        }

        .res-body .res-summary {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin: 0;
        }

        .res-body .res-action {
            display: flex;
            align-items: center;
            margin-top: auto;
        }

        .btn-outline-brand {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            border: 2px solid var(--brand-purple);
            color: var(--brand-purple);
            padding: 8px 20px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 14px;
            transition: background var(--transition), color var(--transition), transform var(--transition);
        }

        .btn-outline-brand:hover {
            background: var(--brand-purple);
            color: #ffffff;
            transform: translateY(-1px);
        }

        /* ============ DATA SNAPSHOT ============ */
        .snapshot-section {
            background: #ffffff;
            border-top: 1px solid var(--border-soft);
            border-bottom: 1px solid var(--border-soft);
        }

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

        .snapshot-card {
            background: var(--bg-card);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-lg);
            padding: 26px 24px;
            box-shadow: var(--shadow-sm);
            text-align: center;
            transition: box-shadow var(--transition), transform var(--transition);
        }

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

        .snapshot-card .snap-icon {
            width: 44px;
            height: 44px;
            background: linear-gradient(135deg, rgba(91, 43, 211, 0.12), rgba(0, 212, 230, 0.12));
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 14px;
            font-size: 20px;
            color: var(--brand-purple);
        }

        .snapshot-card .snap-number {
            font-size: 34px;
            font-weight: 700;
            color: var(--text-main);
            line-height: 1.2;
            letter-spacing: 0.5px;
        }

        .snapshot-card .snap-label {
            font-size: 14px;
            color: var(--text-secondary);
            margin-top: 6px;
        }

        .snapshot-card .snap-badge {
            display: inline-block;
            background: rgba(255, 106, 61, 0.12);
            color: var(--brand-orange);
            font-size: 12px;
            font-weight: 600;
            padding: 3px 12px;
            border-radius: 999px;
            margin-top: 10px;
        }

        /* ============ TOPIC CARDS ============ */
        .topic-section {
            background: var(--bg-page);
        }

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

        .topic-card {
            background: var(--bg-card);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-lg);
            padding: 24px 22px;
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .topic-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: rgba(91, 43, 211, 0.2);
        }

        .topic-card .topic-icon {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--brand-purple), var(--brand-purple-light));
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: #ffffff;
        }

        .topic-card .topic-name {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-main);
        }

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

        .topic-card .topic-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--brand-purple);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-top: auto;
            transition: gap var(--transition);
        }

        .topic-card .topic-link:hover {
            gap: 10px;
            color: var(--brand-purple-light);
        }

        /* ============ GUIDE LIST ============ */
        .guide-section {
            background: #ffffff;
            border-top: 1px solid var(--border-soft);
            border-bottom: 1px solid var(--border-soft);
        }

        .guide-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
        }

        .guide-item {
            display: flex;
            align-items: flex-start;
            gap: 16px;
            background: var(--bg-card);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-md);
            padding: 18px 20px;
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition), transform var(--transition);
        }

        .guide-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-1px);
        }

        .guide-item .guide-step {
            width: 32px;
            height: 32px;
            flex-shrink: 0;
            background: linear-gradient(135deg, var(--brand-purple), var(--brand-cyan));
            color: #ffffff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 15px;
        }

        .guide-item .guide-text {
            font-size: 15px;
            color: var(--text-main);
            line-height: 1.7;
        }

        .guide-item .guide-text strong {
            display: block;
            margin-bottom: 4px;
        }

        /* ============ FAQ ============ */
        .faq-section {
            background: var(--bg-page);
        }

        .accordion-custom {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .accordion-custom .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: box-shadow var(--transition), border-color var(--transition);
        }

        .accordion-custom .faq-item:hover {
            box-shadow: var(--shadow-md);
            border-color: rgba(91, 43, 211, 0.2);
        }

        .accordion-custom .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 22px;
            background: transparent;
            border: none;
            cursor: pointer;
            text-align: left;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            transition: background var(--transition);
        }

        .accordion-custom .faq-question:hover {
            background: rgba(91, 43, 211, 0.05);
        }

        .accordion-custom .faq-question .faq-arrow {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            background: rgba(91, 43, 211, 0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            color: var(--brand-purple);
            transition: transform 200ms ease;
        }

        .accordion-custom .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 300ms ease;
        }

        .accordion-custom .faq-answer-inner {
            padding: 0 22px 20px 22px;
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
        }

        .accordion-custom .faq-item.open .faq-arrow {
            transform: rotate(180deg);
        }

        .accordion-custom .faq-item.open .faq-answer {
            max-height: 300px;
        }

        /* ============ CTA ============ */
        .cta-conversion {
            background: linear-gradient(135deg, #1a0b3b 0%, #3d1a8f 50%, #5b2bd3 100%);
            border-radius: var(--radius-xl);
            padding: 56px 48px;
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }

        .cta-conversion::after {
            content: '';
            position: absolute;
            right: -60px;
            bottom: -80px;
            width: 280px;
            height: 280px;
            background: rgba(0, 212, 230, 0.18);
            border-radius: 50%;
            filter: blur(50px);
            pointer-events: none;
        }

        .cta-conversion-inner {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
            position: relative;
            z-index: 2;
        }

        .cta-conversion .cta-info h3 {
            font-size: 26px;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 12px;
            line-height: 1.4;
        }

        .cta-conversion .cta-info p {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.8);
            line-height: 1.8;
            margin: 0;
        }

        .cta-conversion .cta-form {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .cta-conversion .form-control-custom {
            background: rgba(255, 255, 255, 0.1);
            border: 1.5px solid rgba(255, 255, 255, 0.25);
            border-radius: var(--radius-sm);
            padding: 12px 18px;
            color: #ffffff;
            font-size: 15px;
            transition: border-color var(--transition), background var(--transition);
        }

        .cta-conversion .form-control-custom::placeholder {
            color: rgba(255, 255, 255, 0.55);
        }

        .cta-conversion .form-control-custom:focus {
            outline: none;
            border-color: var(--brand-cyan);
            background: rgba(255, 255, 255, 0.15);
        }

        .cta-conversion .btn-cta-orange {
            background: var(--brand-orange);
            color: #ffffff;
            border: none;
            padding: 14px 28px;
            border-radius: var(--radius-sm);
            font-weight: 700;
            font-size: 16px;
            cursor: pointer;
            transition: background var(--transition), transform var(--transition);
        }

        .cta-conversion .btn-cta-orange:hover {
            background: var(--brand-orange-hover);
            transform: translateY(-1px);
        }

        /* ============ FOOTER ============ */
        .site-footer {
            background: #1a0b3b;
            color: rgba(255, 255, 255, 0.8);
            padding: 56px 0 24px;
            margin-top: 60px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 36px;
        }

        .footer-brand {
            font-size: 20px;
            font-weight: 700;
            color: #ffffff;
            letter-spacing: 1px;
            margin-bottom: 14px;
        }

        .footer-brand p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
            line-height: 1.8;
            margin-top: 12px;
            font-weight: 400;
            letter-spacing: 0;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #ffffff;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }

        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.65);
            font-size: 14px;
            transition: color var(--transition);
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.15);
            padding-top: 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.55);
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.65);
            transition: color var(--transition);
        }

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

        /* ============ RESPONSIVE ============ */
        @media (max-width: 991.98px) {
            .page-hero-inner {
                grid-template-columns: 1fr;
                gap: 32px;
            }

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

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

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

        @media (max-width: 767.98px) {
            :root {
                --section-pad: 60px;
            }

            .section-title {
                font-size: 24px;
            }

            .page-hero {
                padding: 48px 0 68px;
            }

            .page-hero h1 {
                font-size: 28px;
            }

            .page-hero .hero-desc {
                font-size: 15px;
            }

            .resource-item-card {
                grid-template-columns: 1fr;
            }

            .resource-item-card .res-img-wrap {
                min-height: 180px;
                max-height: 220px;
            }

            .resource-item-card .res-body {
                padding: 18px 20px;
            }

            .res-body .res-title {
                font-size: 18px;
            }

            .guide-list {
                grid-template-columns: 1fr;
            }

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

            .snapshot-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }

            .snapshot-card .snap-number {
                font-size: 26px;
            }

            .cta-conversion {
                padding: 36px 24px;
            }

            .cta-conversion-inner {
                grid-template-columns: 1fr;
                gap: 24px;
            }

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

        @media (max-width: 575.98px) {
            :root {
                --section-pad: 44px;
            }

            section {
                padding: 44px 0;
            }

            .container-site {
                padding-left: 16px;
                padding-right: 16px;
            }

            .section-title {
                font-size: 20px;
            }

            .section-desc {
                font-size: 14px;
            }

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

            .navbar-toggler-custom {
                display: flex;
            }

            .nav-menu {
                display: none;
                position: absolute;
                top: 68px;
                left: 0;
                right: 0;
                background: linear-gradient(135deg, #1a0b3b, #5b2bd3);
                flex-direction: column;
                align-items: stretch;
                padding: 12px 16px 20px;
                box-shadow: 0 12px 28px rgba(26, 11, 59, 0.3);
                border-top: 1px solid rgba(255, 255, 255, 0.15);
            }

            .nav-menu.show {
                display: flex;
            }

            .nav-menu li a {
                padding: 14px 16px;
                font-size: 16px;
            }

            .nav-menu .mobile-visible {
                display: block;
                text-align: center;
                margin-top: 10px;
            }

            .header-cta:not(.mobile-visible) {
                display: none;
            }

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

            .hero-stat-card {
                padding: 20px 18px;
            }

            .hero-stat-row .stat-value {
                font-size: 22px;
            }
        }

/* roulang page: category4 */
:root {
            --brand-deep: #1a0b3b;
            --brand-purple: #5b2bd3;
            --brand-purple-light: #7c4ee0;
            --brand-cyan: #00d4e6;
            --brand-orange: #ff6a3d;
            --brand-orange-hover: #ff8257;
            --bg-page: #f5f4fa;
            --bg-card: #ffffff;
            --text-main: #1e1b2e;
            --text-secondary: #5e5a72;
            --text-light: #8a86a0;
            --text-inverse: #ffffff;
            --border-soft: #e6e3f2;
            --border-focus: #5b2bd3;
            --shadow-sm: 0 4px 12px rgba(26, 11, 59, 0.06);
            --shadow-md: 0 8px 24px rgba(26, 11, 59, 0.10);
            --shadow-lg: 0 12px 28px rgba(26, 11, 59, 0.14);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 18px;
            --radius-xl: 24px;
            --transition: 180ms ease;
            --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', 'Helvetica Neue', Arial, sans-serif;
            --section-pad: 88px;
            --container-max: 1200px;
        }

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

        body {
            font-family: var(--font-sans);
            background: var(--bg-page);
            color: var(--text-main);
            line-height: 1.75;
            margin: 0;
            padding: 0;
            font-size: 16px;
            overflow-x: hidden;
        }

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

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

        a:hover {
            color: var(--brand-purple);
        }

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

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

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

        .section-badge {
            display: inline-block;
            background: linear-gradient(135deg, rgba(91, 43, 211, 0.10), rgba(0, 212, 230, 0.10));
            color: var(--brand-purple);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: 999px;
            letter-spacing: 0.5px;
            margin-bottom: 16px;
            border: 1px solid rgba(91, 43, 211, 0.18);
        }

        .section-title {
            font-size: 30px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 14px;
            line-height: 1.35;
            letter-spacing: 0.3px;
        }

        .section-desc {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 720px;
            line-height: 1.8;
            margin-bottom: 36px;
        }

        /* HEADER */
        .site-header {
            background: linear-gradient(135deg, #1a0b3b 0%, #3d1a8f 45%, #5b2bd3 100%);
            padding: 0;
            position: sticky;
            top: 0;
            z-index: 1030;
            box-shadow: 0 4px 20px rgba(26, 11, 59, 0.22);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 68px;
            padding: 0 20px;
            max-width: var(--container-max);
            margin: 0 auto;
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            color: #ffffff;
            font-weight: 700;
            font-size: 20px;
            letter-spacing: 1px;
            white-space: nowrap;
        }

        .brand-logo .logo-icon {
            width: 36px;
            height: 36px;
            background: rgba(255, 255, 255, 0.16);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--brand-cyan);
            border: 1px solid rgba(255, 255, 255, 0.2);
        }

        .brand-logo:hover {
            color: #ffffff;
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 4px;
            list-style: none;
            margin: 0;
            padding: 0;
            flex-wrap: wrap;
        }

        .nav-menu li a {
            display: block;
            padding: 10px 16px;
            color: rgba(255, 255, 255, 0.86);
            font-size: 15px;
            font-weight: 500;
            border-radius: 10px;
            transition: background var(--transition), color var(--transition);
            white-space: nowrap;
        }

        .nav-menu li a:hover,
        .nav-menu li a.active {
            background: rgba(255, 255, 255, 0.14);
            color: #ffffff;
            text-decoration: none;
        }

        .nav-menu li a.active {
            font-weight: 600;
            box-shadow: inset 0 -2px 0 rgba(255, 255, 255, 0.5);
        }

        .header-cta {
            background: var(--brand-orange);
            color: #ffffff;
            border: none;
            padding: 10px 22px;
            border-radius: 10px;
            font-weight: 600;
            font-size: 15px;
            transition: background var(--transition), transform var(--transition);
            white-space: nowrap;
        }

        .header-cta:hover {
            background: var(--brand-orange-hover);
            color: #ffffff;
            transform: translateY(-1px);
        }

        .navbar-toggler-custom {
            display: none;
            background: rgba(255, 255, 255, 0.14);
            border: 1px solid rgba(255, 255, 255, 0.25);
            color: #ffffff;
            width: 42px;
            height: 42px;
            border-radius: 10px;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            cursor: pointer;
        }

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

        /* PAGE TITLE AREA */
        .page-title-section {
            background: linear-gradient(135deg, #1a0b3b 0%, #3d1a8f 55%, #5b2bd3 100%);
            padding: 56px 0 48px;
            position: relative;
            overflow: hidden;
        }

        .page-title-section::after {
            content: '';
            position: absolute;
            top: -40%;
            right: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(0, 212, 230, 0.22) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .page-title-content {
            position: relative;
            z-index: 1;
        }

        .page-title-content .badge-tag {
            display: inline-block;
            background: rgba(0, 212, 230, 0.18);
            color: var(--brand-cyan);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: 999px;
            letter-spacing: 0.6px;
            margin-bottom: 14px;
            border: 1px solid rgba(0, 212, 230, 0.3);
        }

        .page-title-content h1 {
            color: #ffffff;
            font-size: 36px;
            font-weight: 700;
            margin-bottom: 16px;
            line-height: 1.3;
        }

        .page-title-content .lead {
            color: rgba(255, 255, 255, 0.82);
            font-size: 17px;
            max-width: 680px;
            line-height: 1.8;
            margin-bottom: 0;
        }

        /* CALENDAR LIST */
        .calendar-section {
            padding: 52px 0 44px;
        }

        .calendar-grid {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 32px;
            align-items: start;
        }

        .calendar-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .calendar-item {
            display: flex;
            gap: 20px;
            background: var(--bg-card);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-lg);
            padding: 20px;
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
        }

        .calendar-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            border-color: rgba(91, 43, 211, 0.25);
        }

        .calendar-date-block {
            flex: 0 0 72px;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, #1a0b3b 0%, #5b2bd3 100%);
            border-radius: var(--radius-md);
            color: #ffffff;
            padding: 12px 8px;
            min-height: 90px;
        }

        .calendar-date-block .month {
            font-size: 13px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.8);
            text-transform: uppercase;
        }

        .calendar-date-block .day {
            font-size: 28px;
            font-weight: 700;
            line-height: 1.2;
        }

        .calendar-date-block .weekday {
            font-size: 12px;
            color: var(--brand-cyan);
            font-weight: 500;
        }

        .calendar-info {
            flex: 1;
            min-width: 0;
        }

        .calendar-info .event-meta {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
            margin-bottom: 8px;
        }

        .calendar-info .event-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            padding: 3px 12px;
            border-radius: 999px;
            background: rgba(0, 212, 230, 0.12);
            color: #0a8f9c;
            border: 1px solid rgba(0, 212, 230, 0.25);
        }

        .calendar-info .event-tag.orange-tag {
            background: rgba(255, 106, 61, 0.12);
            color: #c94f2a;
            border-color: rgba(255, 106, 61, 0.25);
        }

        .calendar-info h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .calendar-info p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 12px;
        }

        .calendar-info .event-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 10px;
        }

        .calendar-info .event-time {
            font-size: 13px;
            color: var(--text-light);
        }

        .calendar-info .event-time i {
            color: var(--brand-purple);
            margin-right: 6px;
        }

        .read-more-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--brand-purple);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: color var(--transition), gap var(--transition);
        }

        .read-more-link:hover {
            color: var(--brand-orange);
            gap: 10px;
        }

        .calendar-thumb {
            flex: 0 0 100px;
            border-radius: var(--radius-md);
            overflow: hidden;
        }

        .calendar-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: var(--radius-md);
        }

        /* SIDEBAR */
        .calendar-sidebar {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }

        .sidebar-card {
            background: var(--bg-card);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-lg);
            padding: 24px;
            box-shadow: var(--shadow-sm);
        }

        .sidebar-card .sidebar-title {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 16px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--border-soft);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .sidebar-card .sidebar-title i {
            color: var(--brand-purple);
        }

        .stat-mini-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .stat-mini-item {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .stat-mini-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: linear-gradient(135deg, rgba(91, 43, 211, 0.10), rgba(0, 212, 230, 0.10));
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--brand-purple);
            font-size: 18px;
            flex-shrink: 0;
        }

        .stat-mini-text .stat-value {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-main);
            line-height: 1.3;
        }

        .stat-mini-text .stat-label {
            font-size: 13px;
            color: var(--text-light);
        }

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

        .tag-cloud a {
            display: inline-block;
            font-size: 13px;
            font-weight: 500;
            padding: 6px 14px;
            border-radius: 999px;
            background: var(--bg-page);
            color: var(--text-secondary);
            border: 1px solid var(--border-soft);
            transition: background var(--transition), color var(--transition), border-color var(--transition);
        }

        .tag-cloud a:hover {
            background: linear-gradient(135deg, var(--brand-purple), var(--brand-purple-light));
            color: #ffffff;
            border-color: transparent;
        }

        /* RELATED TOPICS */
        .related-section {
            padding: 44px 0;
            background: #ffffff;
            border-top: 1px solid var(--border-soft);
            border-bottom: 1px solid var(--border-soft);
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .related-card {
            background: var(--bg-card);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition), transform var(--transition);
        }

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

        .related-card .related-img {
            height: 160px;
            overflow: hidden;
        }

        .related-card .related-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 300ms ease;
        }

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

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

        .related-card .related-body h3 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 8px;
            line-height: 1.45;
        }

        .related-card .related-body p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 12px;
        }

        /* FAQ SECTION */
        .faq-section {
            padding: 52px 0 44px;
        }

        .faq-list .accordion-item {
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-md) !important;
            margin-bottom: 12px;
            overflow: hidden;
            background: var(--bg-card);
            box-shadow: var(--shadow-sm);
        }

        .faq-list .accordion-button {
            background: var(--bg-card);
            color: var(--text-main);
            font-weight: 600;
            font-size: 15px;
            padding: 16px 20px;
            border: none;
            box-shadow: none;
        }

        .faq-list .accordion-button:not(.collapsed) {
            background: linear-gradient(135deg, rgba(91, 43, 211, 0.06), rgba(0, 212, 230, 0.06));
            color: var(--brand-purple);
            box-shadow: none;
        }

        .faq-list .accordion-button:focus {
            box-shadow: none;
            border-color: var(--border-focus);
        }

        .faq-list .accordion-button::after {
            background-size: 16px;
            background-color: transparent;
        }

        .faq-list .accordion-body {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
            padding: 16px 20px;
            background: #faf9fd;
        }

        /* CTA SECTION */
        .cta-section {
            padding: 56px 0;
            background: linear-gradient(135deg, #1a0b3b 0%, #3d1a8f 50%, #5b2bd3 100%);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -10%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(0, 212, 230, 0.18) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-content {
            position: relative;
            z-index: 1;
            text-align: center;
        }

        .cta-content h2 {
            color: #ffffff;
            font-size: 28px;
            font-weight: 700;
            margin-bottom: 14px;
        }

        .cta-content p {
            color: rgba(255, 255, 255, 0.82);
            font-size: 16px;
            max-width: 560px;
            margin: 0 auto 24px;
            line-height: 1.8;
        }

        .cta-btn {
            display: inline-block;
            background: var(--brand-orange);
            color: #ffffff;
            font-size: 16px;
            font-weight: 700;
            padding: 14px 36px;
            border-radius: 12px;
            border: none;
            transition: background var(--transition), transform var(--transition);
        }

        .cta-btn:hover {
            background: var(--brand-orange-hover);
            color: #ffffff;
            transform: translateY(-2px);
        }

        /* FOOTER */
        .site-footer {
            background: #150925;
            color: rgba(255, 255, 255, 0.75);
            padding: 52px 0 0;
            font-size: 14px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            padding-bottom: 36px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .footer-brand {
            font-size: 20px;
            font-weight: 700;
            color: #ffffff;
            letter-spacing: 1px;
            margin-bottom: 12px;
        }

        .footer-brand p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.8;
            margin-top: 10px;
            max-width: 300px;
        }

        .footer-col h4 {
            font-size: 14px;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 14px;
            letter-spacing: 0.5px;
        }

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

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

        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.65);
            font-size: 13px;
            transition: color var(--transition);
        }

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

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            padding: 18px 0 24px;
            font-size: 12px;
            color: rgba(255, 255, 255, 0.5);
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.55);
            transition: color var(--transition);
        }

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

        /* RESPONSIVE */
        @media (max-width: 991.98px) {
            .calendar-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .calendar-sidebar {
                flex-direction: row;
                flex-wrap: wrap;
            }

            .sidebar-card {
                flex: 1 1 45%;
                min-width: 260px;
            }

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

            .section-title {
                font-size: 24px;
            }

            .page-title-content h1 {
                font-size: 30px;
            }
        }

        @media (max-width: 767.98px) {
            .navbar-toggler-custom {
                display: flex;
            }

            .nav-menu {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: linear-gradient(135deg, #1a0b3b 0%, #3d1a8f 100%);
                flex-direction: column;
                gap: 0;
                padding: 12px 20px 20px;
                box-shadow: 0 12px 24px rgba(26, 11, 59, 0.28);
                border-radius: 0 0 16px 16px;
                z-index: 1029;
            }

            .nav-menu.show {
                display: flex;
            }

            .nav-menu li {
                width: 100%;
            }

            .nav-menu li a {
                padding: 12px 16px;
                font-size: 16px;
                border-radius: 8px;
            }

            .header-cta {
                display: none;
            }

            .mobile-visible {
                display: block !important;
                margin-top: 8px;
                text-align: center;
            }

            .calendar-item {
                flex-direction: column;
                gap: 14px;
            }

            .calendar-date-block {
                flex: 0 0 auto;
                flex-direction: row;
                gap: 10px;
                min-height: auto;
                padding: 10px 16px;
                border-radius: 10px;
            }

            .calendar-date-block .month,
            .calendar-date-block .day,
            .calendar-date-block .weekday {
                font-size: 15px;
            }

            .calendar-date-block .day {
                font-size: 20px;
            }

            .calendar-thumb {
                flex: 0 0 auto;
                height: 140px;
                width: 100%;
            }

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

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

            .footer-brand {
                grid-column: span 2;
            }

            .section-title {
                font-size: 22px;
            }

            .page-title-content h1 {
                font-size: 26px;
            }

            .page-title-content .lead {
                font-size: 15px;
            }
        }

        @media (max-width: 575.98px) {
            .container-site {
                padding-left: 14px;
                padding-right: 14px;
            }

            .header-inner {
                padding: 0 14px;
                min-height: 60px;
            }

            .brand-logo {
                font-size: 17px;
                gap: 8px;
            }

            .brand-logo .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 15px;
            }

            .page-title-section {
                padding: 36px 0 32px;
            }

            .page-title-content h1 {
                font-size: 23px;
            }

            .section-title {
                font-size: 20px;
            }

            .calendar-section {
                padding: 36px 0 32px;
            }

            .faq-section {
                padding: 36px 0 32px;
            }

            .cta-section {
                padding: 40px 0;
            }

            .cta-content h2 {
                font-size: 22px;
            }

            .calendar-sidebar {
                flex-direction: column;
            }

            .sidebar-card {
                flex: 1 1 100%;
                min-width: 0;
            }

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

            .footer-brand {
                grid-column: span 1;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
        }

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}