/* roulang page: index */
:root {
            --primary: #2563EB;
            --primary-dark: #1E4FC4;
            --primary-darker: #1A44A8;
            --accent: #0EA5E9;
            --dark: #0F172A;
            --body: #475569;
            --muted: #94A3B8;
            --lightbg: #F8FAFC;
            --card: #FFFFFF;
            --border: #E8EDF5;
            --success: #10B981;
            --warning: #F59E0B;
            --radius: 14px;
            --shadow-card: 0 2px 14px rgba(15, 23, 42, 0.05);
            --shadow-hover: 0 10px 28px rgba(15, 23, 42, 0.10);
            --container: 1180px;
        }

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

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

        body {
            font-family: 'Inter', 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            background-color: var(--lightbg);
            color: var(--body);
            line-height: 1.85;
            font-size: 16px;
            overflow-x: hidden;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.2s ease;
        }

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

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

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

        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            opacity: 0.7;
        }

        .container {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 16px;
        }

        @media (min-width: 640px) {
            .container {
                padding: 0 24px;
            }
        }

        /* Header Navigation */
        .site-header {
            background: #FFFFFF;
            position: sticky;
            top: 0;
            z-index: 50;
            height: 64px;
            border-bottom: 1px solid #F1F5F9;
            display: flex;
            align-items: center;
        }

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

        .logo-link {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 18px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.5px;
            user-select: none;
        }

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

        .logo-icon {
            width: 28px;
            height: 28px;
            flex-shrink: 0;
        }

        .nav-cta-btn {
            background: var(--primary);
            color: #FFFFFF;
            padding: 10px 20px;
            border-radius: 8px;
            font-size: 14px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: background 0.25s ease, transform 0.2s ease;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            white-space: nowrap;
        }

        .nav-cta-btn:hover {
            background: var(--primary-dark);
            color: #FFFFFF;
            transform: translateY(-1px);
        }

        .nav-cta-btn:active {
            background: var(--primary-darker);
            transform: translateY(0);
        }

        .hamburger-btn {
            background: none;
            border: none;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 8px;
            transition: background 0.2s ease;
            color: var(--dark);
            flex-shrink: 0;
        }

        .hamburger-btn:hover {
            background: #F1F5F9;
        }

        .drawer-overlay {
            position: fixed;
            inset: 0;
            background: rgba(15, 23, 42, 0.4);
            z-index: 60;
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.3s ease;
        }

        .drawer-overlay.active {
            opacity: 1;
            pointer-events: auto;
        }

        .drawer-panel {
            position: fixed;
            top: 0;
            right: -280px;
            width: 280px;
            height: 100vh;
            background: #FFFFFF;
            z-index: 70;
            padding: 24px;
            transition: right 0.35s ease;
            box-shadow: -4px 0 20px rgba(15, 23, 42, 0.12);
            overflow-y: auto;
        }

        .drawer-panel.open {
            right: 0;
        }

        .drawer-close-btn {
            background: none;
            border: none;
            cursor: pointer;
            color: var(--muted);
            display: flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 8px;
            transition: background 0.2s ease, color 0.2s ease;
            margin-left: auto;
        }

        .drawer-close-btn:hover {
            background: #F1F5F9;
            color: var(--dark);
        }

        .drawer-nav-list {
            list-style: none;
            margin-top: 20px;
        }

        .drawer-nav-list li {
            border-bottom: 1px solid #F1F5F9;
        }

        .drawer-nav-list li:last-child {
            border-bottom: none;
        }

        .drawer-nav-list a {
            display: block;
            padding: 16px 0;
            font-size: 15px;
            font-weight: 500;
            color: var(--dark);
            transition: color 0.2s ease, padding-left 0.2s ease;
        }

        .drawer-nav-list a:hover {
            color: var(--primary);
            padding-left: 8px;
        }

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

        @media (max-width: 520px) {
            .nav-cta-btn span {
                display: none;
            }
        }

        /* Hero */
        .hero-section {
            background: linear-gradient(135deg, #0F172A 0%, #1E3A8A 55%, #2563EB 100%);
            color: #FFFFFF;
            padding: 60px 0 80px;
            position: relative;
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: -100px;
            right: -80px;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(14, 165, 233, 0.25) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 40px;
            position: relative;
            z-index: 1;
        }

        @media (min-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr 1fr;
                gap: 60px;
                align-items: center;
            }
        }

        .hero-content h1 {
            font-size: 28px;
            font-weight: 700;
            line-height: 1.25;
            color: #FFFFFF;
            margin-bottom: 20px;
            letter-spacing: 0.3px;
        }

        @media (min-width: 640px) {
            .hero-content h1 {
                font-size: 32px;
            }
        }

        @media (min-width: 1024px) {
            .hero-content h1 {
                font-size: 40px;
            }
        }

        .hero-subtitle {
            font-size: 16px;
            line-height: 1.85;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 28px;
            max-width: 560px;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
        }

        .btn-primary {
            background: #FFFFFF;
            color: var(--primary);
            padding: 14px 28px;
            border-radius: 10px;
            font-size: 15px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: background 0.25s ease, transform 0.2s ease, box-shadow 0.25s ease;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
            text-decoration: none;
        }

        .btn-primary:hover {
            background: #F0F4FF;
            transform: translateY(-1px);
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.18);
            color: var(--primary-dark);
        }

        .btn-primary:active {
            transform: translateY(0);
        }

        .btn-secondary-outline {
            background: transparent;
            color: #FFFFFF;
            padding: 14px 28px;
            border-radius: 10px;
            font-size: 15px;
            font-weight: 600;
            border: 1px solid rgba(255, 255, 255, 0.45);
            cursor: pointer;
            transition: background 0.25s ease, border-color 0.25s ease, transform 0.2s ease;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
            text-decoration: none;
        }

        .btn-secondary-outline:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(255, 255, 255, 0.7);
            transform: translateY(-1px);
            color: #FFFFFF;
        }

        .hero-image-wrapper {
            background: rgba(15, 23, 42, 0.5);
            border-radius: 16px;
            overflow: hidden;
            border: 1px solid rgba(255, 255, 255, 0.15);
            box-shadow: 0 20px 50px rgba(0, 0, 0, 0.25);
            position: relative;
            min-height: 240px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .hero-image-wrapper img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            min-height: 240px;
        }

        .hero-metrics {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
            margin-top: 40px;
        }

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

        .metric-card {
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 12px;
            padding: 18px 20px;
            text-align: center;
            backdrop-filter: blur(8px);
        }

        .metric-number {
            font-size: 28px;
            font-weight: 700;
            color: #FFFFFF;
            letter-spacing: 0.5px;
            line-height: 1.3;
        }

        @media (min-width: 1024px) {
            .metric-number {
                font-size: 32px;
            }
        }

        .metric-label {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 4px;
        }

        /* Category Entry Bar */
        .category-entry-section {
            background: #FFFFFF;
            border-bottom: 1px solid var(--border);
            padding: 20px 0;
        }

        .category-entry-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            align-items: center;
        }

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

        .category-pill {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: #F8FAFC;
            border: 1px solid var(--border);
            border-radius: 999px;
            padding: 10px 18px;
            font-size: 14px;
            font-weight: 500;
            color: var(--dark);
            transition: all 0.2s ease;
            text-decoration: none;
            white-space: nowrap;
        }

        .category-pill:hover {
            background: #EFF6FF;
            border-color: rgba(37, 99, 235, 0.3);
            color: var(--primary);
            transform: translateY(-1px);
        }

        .category-pill .pill-desc {
            font-size: 12px;
            color: var(--muted);
            font-weight: 400;
        }

        @media (max-width: 768px) {
            .category-pill .pill-desc {
                display: none;
            }
        }

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

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

        @media (min-width: 1024px) {
            .section {
                padding: 80px 0;
            }
        }

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

        .section-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            background: #EFF6FF;
            border-radius: 999px;
            padding: 4px 14px;
            margin-bottom: 12px;
        }

        .section-title {
            font-size: 22px;
            font-weight: 700;
            color: var(--dark);
            line-height: 1.35;
        }

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

        @media (min-width: 1024px) {
            .section-title {
                font-size: 30px;
            }
        }

        .section-desc {
            font-size: 15px;
            line-height: 1.85;
            color: var(--body);
            margin-top: 12px;
            max-width: 720px;
        }

        /* Card Base */
        .card {
            background: var(--card);
            border-radius: var(--radius);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border);
            padding: 24px;
            transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
        }

        .card:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(37, 99, 235, 0.25);
        }

        @media (min-width: 768px) {
            .card {
                padding: 28px;
            }
        }

        .card-title {
            font-size: 17px;
            font-weight: 600;
            color: var(--dark);
            line-height: 1.4;
            margin-bottom: 8px;
        }

        @media (min-width: 768px) {
            .card-title {
                font-size: 19px;
            }
        }

        .card-desc {
            font-size: 14px;
            line-height: 1.7;
            color: #64748B;
        }

        /* Sports Matrix */
        .sports-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
        }

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

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

        .sports-card {
            background: #FFFFFF;
            border-radius: 14px;
            box-shadow: 0 2px 14px rgba(15, 23, 42, 0.05);
            border: 1px solid var(--border);
            padding: 24px;
            transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .sports-card:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 28px rgba(15, 23, 42, 0.10);
            border-color: rgba(37, 99, 235, 0.25);
        }

        .sports-card.featured {
            grid-column: span 1;
        }

        @media (min-width: 640px) {
            .sports-card.featured {
                grid-column: span 2;
            }
        }

        @media (min-width: 1024px) {
            .sports-card.featured {
                grid-column: span 2;
            }
        }

        .sports-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: #EFF6FF;
            color: var(--primary);
            flex-shrink: 0;
        }

        .sports-name {
            font-size: 17px;
            font-weight: 600;
            color: var(--dark);
        }

        .sports-desc {
            font-size: 14px;
            color: #64748B;
            line-height: 1.7;
        }

        .sports-stat {
            font-size: 13px;
            color: var(--accent);
            font-weight: 500;
            background: #F0F9FF;
            border-radius: 6px;
            padding: 4px 10px;
            display: inline-block;
            margin-top: auto;
            width: fit-content;
        }

        /* Comparison Panel */
        .comparison-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 24px;
        }

        @media (min-width: 768px) {
            .comparison-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        .comparison-card {
            border-radius: 16px;
            padding: 28px;
            border: 1px solid var(--border);
        }

        .comparison-card.conventional {
            background: #F1F5F9;
        }

        .comparison-card.platform {
            background: #EFF6FF;
            border-color: rgba(37, 99, 235, 0.2);
        }

        .comparison-card h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--dark);
            margin-bottom: 20px;
        }

        .comparison-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .comparison-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 14px;
            color: var(--body);
            line-height: 1.6;
        }

        .comparison-icon {
            width: 20px;
            height: 20px;
            flex-shrink: 0;
            margin-top: 2px;
        }

        .comparison-icon.positive {
            color: var(--success);
        }

        .comparison-icon.negative {
            color: #94A3B8;
        }

        /* Timeline */
        .timeline-container {
            display: flex;
            flex-direction: column;
            gap: 32px;
            position: relative;
            padding-left: 24px;
        }

        .timeline-container::before {
            content: '';
            position: absolute;
            left: 8px;
            top: 8px;
            bottom: 8px;
            width: 2px;
            background: var(--border);
        }

        @media (min-width: 768px) {
            .timeline-container {
                flex-direction: row;
                padding-left: 0;
                gap: 16px;
            }
            .timeline-container::before {
                left: 0;
                right: 0;
                top: 8px;
                bottom: auto;
                width: auto;
                height: 2px;
                background: var(--border);
            }
        }

        .timeline-item {
            position: relative;
            padding-left: 20px;
            flex: 1;
        }

        @media (min-width: 768px) {
            .timeline-item {
                padding-left: 0;
                padding-top: 20px;
            }
        }

        .timeline-dot {
            position: absolute;
            left: -20px;
            top: 6px;
            width: 14px;
            height: 14px;
            border-radius: 50%;
            background: var(--primary);
            border: 3px solid #FFFFFF;
            box-shadow: 0 0 0 2px var(--primary);
        }

        @media (min-width: 768px) {
            .timeline-dot {
                left: 12px;
                top: -7px;
            }
        }

        .timeline-year {
            font-size: 16px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 6px;
        }

        .timeline-text {
            font-size: 14px;
            color: var(--body);
            line-height: 1.7;
        }

        /* News Section */
        .news-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
        }

        @media (min-width: 768px) {
            .news-grid {
                grid-template-columns: 1.2fr 0.8fr;
                gap: 24px;
            }
        }

        .news-featured {
            background: #FFFFFF;
            border-radius: 14px;
            box-shadow: 0 2px 14px rgba(15, 23, 42, 0.05);
            border: 1px solid var(--border);
            overflow: hidden;
            display: flex;
            flex-direction: column;
        }

        .news-featured-image {
            width: 100%;
            height: 220px;
            object-fit: cover;
        }

        .news-featured-body {
            padding: 24px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .news-date {
            font-size: 13px;
            color: var(--muted);
            margin-bottom: 8px;
        }

        .news-title {
            font-size: 18px;
            font-weight: 600;
            color: var(--dark);
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .news-summary {
            font-size: 14px;
            color: #64748B;
            line-height: 1.7;
            margin-bottom: 16px;
            flex: 1;
        }

        .btn-read-more {
            background: none;
            border: 1px solid var(--border);
            color: var(--body);
            padding: 8px 18px;
            border-radius: 8px;
            font-size: 13px;
            font-weight: 500;
            cursor: pointer;
            transition: all 0.2s ease;
            align-self: flex-start;
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        .btn-read-more:hover {
            background: #F8FAFC;
            border-color: #CBD5E1;
            color: var(--primary);
        }

        .news-list-side {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .news-list-item {
            background: #FFFFFF;
            border-radius: 14px;
            box-shadow: 0 2px 14px rgba(15, 23, 42, 0.05);
            border: 1px solid var(--border);
            padding: 20px;
            transition: transform 0.25s ease, box-shadow 0.25s ease;
            display: flex;
            gap: 14px;
            align-items: flex-start;
        }

        .news-list-item:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 28px rgba(15, 23, 42, 0.10);
        }

        .news-list-thumb {
            width: 60px;
            height: 60px;
            border-radius: 10px;
            object-fit: cover;
            flex-shrink: 0;
        }

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

        .news-list-content .news-date {
            font-size: 12px;
            margin-bottom: 4px;
        }

        .news-list-content .news-title {
            font-size: 15px;
            margin-bottom: 4px;
        }

        .news-list-content .news-summary {
            font-size: 13px;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .btn-news-small {
            background: none;
            border: none;
            color: var(--primary);
            font-size: 13px;
            font-weight: 500;
            cursor: pointer;
            padding: 0;
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        .btn-news-small:hover {
            color: var(--primary-dark);
        }

        /* Brand Intro */
        .brand-intro-section {
            background: #FFFFFF;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .brand-intro-text {
            font-size: 15px;
            line-height: 2;
            color: var(--body);
            text-align: justify;
            max-width: 800px;
            margin: 0 auto;
        }

        /* Deep Content */
        .deep-content-block {
            background: #FFFFFF;
            border-radius: 16px;
            box-shadow: 0 2px 14px rgba(15, 23, 42, 0.05);
            border: 1px solid var(--border);
            padding: 32px;
        }

        @media (min-width: 768px) {
            .deep-content-block {
                padding: 40px;
            }
        }

        .deep-content-block p {
            font-size: 15px;
            line-height: 2;
            color: var(--body);
            margin-bottom: 16px;
            text-align: justify;
        }

        .deep-content-block p:last-child {
            margin-bottom: 0;
        }

        /* Support Grid */
        .support-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
        }

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

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

        .support-item {
            background: #FFFFFF;
            border-radius: 14px;
            box-shadow: 0 2px 14px rgba(15, 23, 42, 0.05);
            border: 1px solid var(--border);
            padding: 20px;
            text-align: center;
            transition: transform 0.25s ease, box-shadow 0.25s ease;
        }

        .support-item:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 28px rgba(15, 23, 42, 0.10);
        }

        .support-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: #EFF6FF;
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 12px;
        }

        .support-item-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--dark);
            margin-bottom: 6px;
        }

        .support-item-desc {
            font-size: 13px;
            color: #64748B;
            line-height: 1.6;
        }

        /* Reviews */
        .reviews-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
        }

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

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

        .review-card {
            background: #FFFFFF;
            border-radius: 14px;
            box-shadow: 0 2px 14px rgba(15, 23, 42, 0.05);
            border: 1px solid var(--border);
            padding: 20px;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .review-stars {
            color: #F59E0B;
            font-size: 14px;
            letter-spacing: 2px;
        }

        .review-text {
            font-size: 13px;
            color: var(--body);
            line-height: 1.7;
            flex: 1;
        }

        .review-author {
            font-size: 13px;
            color: var(--muted);
            font-weight: 500;
        }

        /* Quick FAQ */
        .quick-faq-list {
            display: grid;
            grid-template-columns: 1fr;
            gap: 16px;
        }

        @media (min-width: 768px) {
            .quick-faq-list {
                grid-template-columns: 1fr 1fr;
            }
        }

        .quick-faq-item {
            background: #FFFFFF;
            border-radius: 14px;
            box-shadow: 0 2px 14px rgba(15, 23, 42, 0.05);
            border: 1px solid var(--border);
            padding: 20px;
        }

        .quick-faq-q {
            font-size: 15px;
            font-weight: 600;
            color: var(--dark);
            margin-bottom: 8px;
        }

        .quick-faq-a {
            font-size: 14px;
            color: var(--body);
            line-height: 1.7;
        }

        /* FAQ Accordion */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: #FFFFFF;
            border-radius: 12px;
            box-shadow: 0 2px 14px rgba(15, 23, 42, 0.05);
            border: 1px solid var(--border);
            overflow: hidden;
        }

        .faq-question {
            padding: 20px 24px;
            font-size: 15px;
            font-weight: 600;
            color: var(--dark);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            user-select: none;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            line-height: 1.4;
        }

        .faq-question:hover {
            background: #F8FAFC;
        }

        .faq-toggle-icon {
            flex-shrink: 0;
            color: var(--muted);
            transition: transform 0.3s ease;
            width: 20px;
            height: 20px;
        }

        .faq-item.open .faq-toggle-icon {
            transform: rotate(180deg);
            color: var(--primary);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px;
        }

        .faq-item.open .faq-answer {
            max-height: 400px;
            padding: 0 24px 20px;
        }

        .faq-answer p {
            font-size: 14px;
            color: var(--body);
            line-height: 1.8;
        }

        /* CTA Form */
        .cta-form-section {
            background: linear-gradient(135deg, #0F172A 0%, #1E3A8A 60%, #2563EB 100%);
            color: #FFFFFF;
            position: relative;
            overflow: hidden;
        }

        .cta-form-section::after {
            content: '';
            position: absolute;
            bottom: -100px;
            right: -50px;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(14, 165, 233, 0.3) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-form-card {
            background: #FFFFFF;
            border-radius: 16px;
            box-shadow: 0 20px 50px rgba(0, 0, 0, 0.25);
            padding: 32px;
            max-width: 560px;
            margin: 0 auto;
            position: relative;
            z-index: 1;
        }

        @media (min-width: 768px) {
            .cta-form-card {
                padding: 40px;
            }
        }

        .cta-form-card h2 {
            font-size: 22px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 8px;
        }

        .cta-form-desc {
            font-size: 14px;
            color: var(--body);
            line-height: 1.7;
            margin-bottom: 24px;
        }

        .form-group {
            margin-bottom: 16px;
        }

        .form-label {
            display: block;
            font-size: 13px;
            font-weight: 500;
            color: var(--dark);
            margin-bottom: 6px;
        }

        .form-input,
        .form-select {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--border);
            border-radius: 10px;
            font-size: 14px;
            color: var(--dark);
            background: #F8FAFC;
            transition: border-color 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
            appearance: none;
        }

        .form-input:focus,
        .form-select:focus {
            outline: none;
            border-color: var(--primary);
            background: #FFFFFF;
            box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
        }

        .form-input::placeholder {
            color: #94A3B8;
        }

        .btn-submit {
            background: var(--primary);
            color: #FFFFFF;
            padding: 14px 28px;
            border-radius: 10px;
            font-size: 15px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            width: 100%;
            transition: background 0.25s ease, transform 0.2s ease;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
        }

        .btn-submit:hover {
            background: var(--primary-dark);
            transform: translateY(-1px);
        }

        .btn-submit:active {
            background: var(--primary-darker);
            transform: translateY(0);
        }

        .form-trust {
            font-size: 12px;
            color: var(--muted);
            text-align: center;
            margin-top: 14px;
            line-height: 1.6;
        }

        /* Partners */
        .partners-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
            align-items: center;
        }

        .partner-item {
            background: #F8FAFC;
            border: 1px solid var(--border);
            border-radius: 10px;
            padding: 14px 24px;
            font-size: 14px;
            color: var(--body);
            font-weight: 500;
            text-align: center;
            transition: background 0.2s ease, border-color 0.2s ease;
        }

        .partner-item:hover {
            background: #F0F4FF;
            border-color: rgba(37, 99, 235, 0.2);
        }

        /* Footer */
        .site-footer {
            background: #0F172A;
            color: #94A3B8;
            padding: 48px 0 24px;
            font-size: 14px;
        }

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

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

        @media (min-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1.2fr 0.8fr 0.8fr 0.8fr;
            }
        }

        .footer-brand {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .footer-logo {
            font-size: 18px;
            font-weight: 700;
            color: #FFFFFF;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .footer-logo:hover {
            color: #FFFFFF;
        }

        .footer-brand-desc {
            font-size: 13px;
            line-height: 1.7;
            color: #94A3B8;
            max-width: 280px;
        }

        .footer-column-title {
            font-size: 14px;
            font-weight: 600;
            color: #FFFFFF;
            margin-bottom: 16px;
        }

        .footer-nav-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-nav-list a {
            color: #94A3B8;
            font-size: 13px;
            transition: color 0.2s ease;
            text-decoration: none;
        }

        .footer-nav-list a:hover {
            color: #FFFFFF;
        }

        .footer-contact-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
            font-size: 13px;
        }

        .footer-contact-list li {
            color: #94A3B8;
        }

        .footer-subscribe-desc {
            font-size: 13px;
            line-height: 1.7;
            margin-bottom: 12px;
        }

        .footer-subscribe-btn {
            background: rgba(255, 255, 255, 0.1);
            color: #FFFFFF;
            border: 1px solid rgba(255, 255, 255, 0.2);
            padding: 8px 16px;
            border-radius: 8px;
            font-size: 13px;
            font-weight: 500;
            cursor: pointer;
            transition: background 0.2s ease, border-color 0.2s ease;
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .footer-subscribe-btn:hover {
            background: rgba(255, 255, 255, 0.18);
            border-color: rgba(255, 255, 255, 0.35);
            color: #FFFFFF;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 20px;
            display: flex;
            flex-direction: column;
            gap: 8px;
            font-size: 12px;
        }

        .footer-bottom-links {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        .footer-bottom-links a {
            color: #94A3B8;
            text-decoration: none;
            transition: color 0.2s ease;
        }

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

        /* Responsive utilities */
        @media (max-width: 639px) {
            .section-title {
                font-size: 20px;
            }
            .card {
                padding: 20px;
            }
            .sports-card {
                padding: 20px;
            }
            .deep-content-block {
                padding: 24px;
            }
            .cta-form-card {
                padding: 24px;
            }
            .hero-section {
                padding: 40px 0 60px;
            }
            .hero-content h1 {
                font-size: 26px;
            }
            .hero-metrics {
                gap: 10px;
            }
            .metric-card {
                padding: 14px 12px;
            }
            .metric-number {
                font-size: 24px;
            }
            .nav-cta-btn {
                padding: 8px 14px;
                font-size: 13px;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #2563EB;
            --primary-dark: #1E4FC4;
            --primary-darker: #1A44A8;
            --accent: #0EA5E9;
            --dark: #0F172A;
            --body: #475569;
            --muted: #94A3B8;
            --lightbg: #F8FAFC;
            --card: #FFFFFF;
            --border: #E8EDF5;
            --success: #10B981;
            --warning: #F59E0B;
            --radius: 14px;
            --shadow-card: 0 2px 14px rgba(15, 23, 42, 0.05);
            --shadow-hover: 0 10px 28px rgba(15, 23, 42, 0.10);
            --container: 1180px;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: 'Inter', 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            background-color: var(--lightbg);
            color: var(--body);
            line-height: 1.85;
            font-size: 16px;
            overflow-x: hidden;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover {
            color: var(--primary-dark);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
            color: inherit;
        }
        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }
        .container {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 16px;
        }
        @media (min-width: 640px) {
            .container {
                padding: 0 24px;
            }
        }
        .site-header {
            background: #FFFFFF;
            position: sticky;
            top: 0;
            z-index: 50;
            height: 64px;
            border-bottom: 1px solid #F1F5F9;
            display: flex;
            align-items: center;
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }
        .logo-link {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 18px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.5px;
            user-select: none;
        }
        .logo-link:hover {
            color: var(--primary-dark);
        }
        .logo-icon {
            width: 28px;
            height: 28px;
            flex-shrink: 0;
        }
        .nav-cta-btn {
            background: var(--primary);
            color: #FFFFFF;
            padding: 10px 20px;
            border-radius: 8px;
            font-size: 14px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: background 0.25s ease, transform 0.2s ease;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            white-space: nowrap;
        }
        .nav-cta-btn:hover {
            background: var(--primary-dark);
            color: #FFFFFF;
            transform: translateY(-1px);
        }
        .nav-cta-btn:active {
            background: var(--primary-darker);
            transform: translateY(0);
        }
        .nav-cta-btn span {
            display: none;
        }
        @media (min-width: 640px) {
            .nav-cta-btn span {
                display: inline;
            }
        }
        .hamburger-btn {
            background: none;
            border: none;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 8px;
            transition: background 0.2s ease;
            color: var(--dark);
            flex-shrink: 0;
        }
        .hamburger-btn:hover {
            background: #F1F5F9;
        }
        .drawer-overlay {
            position: fixed;
            inset: 0;
            background: rgba(15, 23, 42, 0.4);
            z-index: 60;
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.3s ease;
        }
        .drawer-overlay.active {
            opacity: 1;
            pointer-events: auto;
        }
        .drawer-panel {
            position: fixed;
            top: 0;
            right: -280px;
            width: 280px;
            height: 100vh;
            background: #FFFFFF;
            z-index: 70;
            padding: 24px;
            transition: right 0.35s ease;
            box-shadow: -4px 0 20px rgba(15, 23, 42, 0.12);
            overflow-y: auto;
        }
        .drawer-panel.open {
            right: 0;
        }
        .drawer-close-btn {
            background: none;
            border: none;
            cursor: pointer;
            color: var(--muted);
            display: flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 8px;
            transition: background 0.2s ease, color 0.2s ease;
            margin-left: auto;
        }
        .drawer-close-btn:hover {
            background: #F1F5F9;
            color: var(--dark);
        }
        .drawer-nav-list {
            list-style: none;
            margin-top: 20px;
        }
        .drawer-nav-list li {
            border-bottom: 1px solid #F1F5F9;
        }
        .drawer-nav-list li:last-child {
            border-bottom: none;
        }
        .drawer-nav-list a {
            display: block;
            padding: 16px 0;
            font-size: 15px;
            font-weight: 500;
            color: var(--dark);
            transition: color 0.2s ease, padding-left 0.2s ease;
        }
        .drawer-nav-list a:hover {
            color: var(--primary);
            padding-left: 8px;
        }
        .drawer-nav-list a.active {
            color: var(--primary);
            font-weight: 600;
        }
        .page-hero {
            background: #F1F5F9;
            padding: 40px 0 48px;
            border-bottom: 1px solid var(--border);
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--muted);
            margin-bottom: 16px;
        }
        .breadcrumb a {
            color: var(--muted);
            transition: color 0.2s ease;
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb .sep {
            color: #CBD5E1;
            user-select: none;
        }
        .breadcrumb .current {
            color: var(--primary);
            font-weight: 500;
        }
        .page-hero h1 {
            font-size: 30px;
            font-weight: 700;
            color: var(--dark);
            line-height: 1.3;
            margin-bottom: 12px;
        }
        .page-hero .hero-desc {
            font-size: 15px;
            color: var(--body);
            max-width: 720px;
            line-height: 1.9;
        }
        .section {
            padding: 56px 0;
        }
        .section-alt {
            background: #FFFFFF;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }
        .section-title {
            font-size: 24px;
            font-weight: 700;
            color: var(--dark);
            line-height: 1.35;
            margin-bottom: 8px;
        }
        .section-subtitle {
            font-size: 15px;
            color: var(--body);
            max-width: 680px;
            line-height: 1.8;
            margin-bottom: 32px;
        }
        .stats-list {
            display: grid;
            grid-template-columns: 1fr;
            gap: 18px;
        }
        @media (min-width: 640px) {
            .stats-list {
                grid-template-columns: 1fr 1fr;
            }
        }
        .stat-list-item {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 20px 22px;
            box-shadow: var(--shadow-card);
            transition: box-shadow 0.25s ease, transform 0.25s ease, border-color 0.25s ease;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .stat-list-item:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
            border-color: rgba(37, 99, 235, 0.25);
        }
        .stat-list-item .stat-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 10px;
        }
        .stat-list-item .stat-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--dark);
            line-height: 1.4;
        }
        .stat-list-item .stat-badge {
            font-size: 12px;
            font-weight: 500;
            padding: 3px 10px;
            border-radius: 20px;
            background: #EFF6FF;
            color: var(--primary);
            white-space: nowrap;
        }
        .stat-list-item .stat-badge.warning {
            background: #FFF7ED;
            color: var(--warning);
        }
        .stat-list-item .stat-badge.success {
            background: #ECFDF5;
            color: var(--success);
        }
        .stat-list-item .stat-desc {
            font-size: 14px;
            color: var(--body);
            line-height: 1.75;
        }
        .stat-list-item .stat-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: var(--muted);
        }
        .stat-list-item .stat-link {
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: color 0.2s ease;
        }
        .stat-list-item .stat-link:hover {
            color: var(--primary-dark);
        }
        .data-points {
            display: grid;
            grid-template-columns: 1fr;
            gap: 16px;
        }
        @media (min-width: 640px) {
            .data-points {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (min-width: 1024px) {
            .data-points {
                grid-template-columns: 1fr 1fr 1fr 1fr;
            }
        }
        .data-point-card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 20px;
            text-align: center;
            box-shadow: var(--shadow-card);
            transition: box-shadow 0.25s ease, border-color 0.25s ease;
        }
        .data-point-card:hover {
            box-shadow: var(--shadow-hover);
            border-color: rgba(37, 99, 235, 0.25);
        }
        .data-point-card .dp-value {
            font-size: 30px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 6px;
        }
        .data-point-card .dp-label {
            font-size: 13px;
            color: var(--muted);
        }
        .featured-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
        }
        @media (min-width: 640px) {
            .featured-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (min-width: 1024px) {
            .featured-grid {
                grid-template-columns: 1fr 1fr 1fr 1fr;
            }
        }
        .featured-card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: box-shadow 0.25s ease, transform 0.25s ease, border-color 0.25s ease;
        }
        .featured-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
            border-color: rgba(37, 99, 235, 0.25);
        }
        .featured-card .fc-img {
            width: 100%;
            height: 150px;
            object-fit: cover;
        }
        .featured-card .fc-body {
            padding: 16px 18px 18px;
        }
        .featured-card .fc-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--dark);
            margin-bottom: 6px;
            line-height: 1.45;
        }
        .featured-card .fc-desc {
            font-size: 13px;
            color: var(--body);
            line-height: 1.7;
            margin-bottom: 10px;
        }
        .featured-card .fc-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 500;
            padding: 3px 10px;
            border-radius: 20px;
            background: #EFF6FF;
            color: var(--primary);
        }
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: 12px;
            margin-bottom: 12px;
            padding: 18px 20px;
            box-shadow: var(--shadow-card);
            transition: box-shadow 0.25s ease, border-color 0.25s ease;
        }
        .faq-item:hover {
            box-shadow: var(--shadow-hover);
            border-color: rgba(37, 99, 235, 0.25);
        }
        .faq-item .faq-q {
            font-size: 15px;
            font-weight: 600;
            color: var(--dark);
            margin-bottom: 8px;
            display: flex;
            gap: 8px;
            align-items: flex-start;
        }
        .faq-item .faq-q .q-icon {
            color: var(--primary);
            flex-shrink: 0;
            font-weight: 700;
        }
        .faq-item .faq-a {
            font-size: 14px;
            color: var(--body);
            line-height: 1.8;
            padding-left: 20px;
        }
        .cta-section {
            background: var(--dark);
            padding: 56px 0;
            color: #FFFFFF;
        }
        .cta-section .cta-inner {
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
            gap: 16px;
        }
        .cta-section .cta-title {
            font-size: 26px;
            font-weight: 700;
            color: #FFFFFF;
            line-height: 1.35;
        }
        .cta-section .cta-desc {
            font-size: 15px;
            color: #CBD5E1;
            max-width: 560px;
            line-height: 1.8;
        }
        .cta-section .cta-btn {
            background: var(--primary);
            color: #FFFFFF;
            padding: 12px 28px;
            border-radius: 8px;
            font-size: 15px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: background 0.25s ease, transform 0.2s ease;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            margin-top: 8px;
        }
        .cta-section .cta-btn:hover {
            background: var(--primary-dark);
            transform: translateY(-1px);
        }
        .cta-section .cta-btn:active {
            background: var(--primary-darker);
            transform: translateY(0);
        }
        .deep-reading {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 28px;
            box-shadow: var(--shadow-card);
            max-width: 860px;
            margin: 0 auto;
        }
        .deep-reading .dr-title {
            font-size: 20px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 12px;
        }
        .deep-reading .dr-meta {
            font-size: 13px;
            color: var(--muted);
            margin-bottom: 14px;
        }
        .deep-reading .dr-content {
            font-size: 15px;
            color: var(--body);
            line-height: 1.9;
            margin-bottom: 18px;
        }
        .deep-reading .dr-content p {
            margin-bottom: 14px;
        }
        .dr-link-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary);
            color: #FFFFFF;
            padding: 10px 22px;
            border-radius: 8px;
            font-size: 14px;
            font-weight: 600;
            transition: background 0.25s ease, transform 0.2s ease;
            border: none;
            cursor: pointer;
        }
        .dr-link-btn:hover {
            background: var(--primary-dark);
            color: #FFFFFF;
            transform: translateY(-1px);
        }
        .site-footer {
            background: #FFFFFF;
            border-top: 1px solid var(--border);
            padding: 48px 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        @media (min-width: 640px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (min-width: 1024px) {
            .footer-grid {
                grid-template-columns: 2fr 1fr 1.2fr 1fr;
                gap: 40px;
            }
        }
        .footer-logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 18px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 12px;
        }
        .footer-logo:hover {
            color: var(--primary-dark);
        }
        .footer-brand-desc {
            font-size: 14px;
            color: var(--body);
            line-height: 1.75;
            max-width: 300px;
        }
        .footer-column-title {
            font-size: 14px;
            font-weight: 600;
            color: var(--dark);
            margin-bottom: 14px;
        }
        .footer-nav-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-nav-list li {
            margin-bottom: 8px;
        }
        .footer-nav-list a {
            font-size: 14px;
            color: var(--body);
            transition: color 0.2s ease;
        }
        .footer-nav-list a:hover {
            color: var(--primary);
        }
        .footer-contact-list {
            list-style: none;
            padding: 0;
            margin: 0;
            font-size: 14px;
            color: var(--body);
        }
        .footer-contact-list li {
            margin-bottom: 8px;
        }
        .footer-subscribe-desc {
            font-size: 14px;
            color: var(--body);
            line-height: 1.7;
            margin-bottom: 12px;
        }
        .footer-subscribe-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: #F1F5F9;
            color: var(--dark);
            padding: 8px 16px;
            border-radius: 8px;
            font-size: 13px;
            font-weight: 500;
            transition: background 0.2s ease, color 0.2s ease;
        }
        .footer-subscribe-btn:hover {
            background: #E2E8F0;
            color: var(--primary);
        }
        .footer-bottom {
            border-top: 1px solid var(--border);
            padding-top: 20px;
            display: flex;
            flex-direction: column;
            gap: 8px;
            font-size: 13px;
            color: var(--muted);
        }
        @media (min-width: 768px) {
            .footer-bottom {
                flex-direction: row;
                flex-wrap: wrap;
                justify-content: space-between;
                align-items: center;
            }
        }
        .footer-bottom-links {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .footer-bottom-links a {
            color: var(--muted);
            font-size: 13px;
            transition: color 0.2s ease;
        }
        .footer-bottom-links a:hover {
            color: var(--primary);
        }
        .load-more-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: var(--card);
            color: var(--primary);
            border: 1px solid var(--border);
            padding: 12px 28px;
            border-radius: 8px;
            font-size: 14px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.25s ease, border-color 0.25s ease, transform 0.2s ease;
            margin-top: 24px;
        }
        .load-more-btn:hover {
            background: #F8FAFC;
            border-color: rgba(37, 99, 235, 0.4);
            transform: translateY(-1px);
        }
        .load-more-btn:active {
            transform: translateY(0);
        }
        @media (max-width: 639px) {
            .page-hero h1 {
                font-size: 26px;
            }
            .section {
                padding: 40px 0;
            }
            .section-title {
                font-size: 21px;
            }
            .cta-section .cta-title {
                font-size: 22px;
            }
            .nav-cta-btn {
                padding: 8px 16px;
                font-size: 13px;
            }
            .logo-link {
                font-size: 16px;
            }
            .stat-list-item,
            .featured-card .fc-body,
            .data-point-card,
            .faq-item,
            .deep-reading {
                padding: 16px;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #2563EB;
            --primary-dark: #1E4FC4;
            --primary-darker: #1A44A8;
            --accent: #0EA5E9;
            --dark: #0F172A;
            --body: #475569;
            --muted: #94A3B8;
            --lightbg: #F8FAFC;
            --card: #FFFFFF;
            --border: #E8EDF5;
            --success: #10B981;
            --warning: #F59E0B;
            --radius: 14px;
            --shadow-card: 0 2px 14px rgba(15, 23, 42, 0.05);
            --shadow-hover: 0 10px 28px rgba(15, 23, 42, 0.10);
            --container: 1180px;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: 'Inter', 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            background-color: var(--lightbg);
            color: var(--body);
            line-height: 1.85;
            font-size: 16px;
            overflow-x: hidden;
            margin: 0;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover {
            color: var(--primary-dark);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
            color: inherit;
        }
        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }
        .container {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 640px) {
            .container {
                padding: 0 16px;
            }
        }

        /* Header Navigation */
        .site-header {
            background: #FFFFFF;
            position: sticky;
            top: 0;
            z-index: 50;
            height: 64px;
            border-bottom: 1px solid #F1F5F9;
            display: flex;
            align-items: center;
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }
        .logo-link {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 18px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.5px;
            user-select: none;
        }
        .logo-link:hover {
            color: var(--primary-dark);
        }
        .logo-icon {
            width: 28px;
            height: 28px;
            flex-shrink: 0;
        }
        .nav-cta-btn {
            background: var(--primary);
            color: #FFFFFF;
            padding: 10px 20px;
            border-radius: 8px;
            font-size: 14px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: background 0.25s ease, transform 0.2s ease;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            white-space: nowrap;
        }
        .nav-cta-btn:hover {
            background: var(--primary-dark);
            color: #FFFFFF;
            transform: translateY(-1px);
        }
        .nav-cta-btn:active {
            background: var(--primary-darker);
            transform: translateY(0);
        }
        .hamburger-btn {
            background: none;
            border: none;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 8px;
            transition: background 0.2s ease;
            color: var(--dark);
            flex-shrink: 0;
        }
        .hamburger-btn:hover {
            background: #F1F5F9;
        }
        .header-left-group {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .drawer-overlay {
            position: fixed;
            inset: 0;
            background: rgba(15, 23, 42, 0.4);
            z-index: 60;
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.3s ease;
        }
        .drawer-overlay.active {
            opacity: 1;
            pointer-events: auto;
        }
        .drawer-panel {
            position: fixed;
            top: 0;
            right: -280px;
            width: 280px;
            height: 100vh;
            background: #FFFFFF;
            z-index: 70;
            padding: 24px;
            transition: right 0.35s ease;
            box-shadow: -4px 0 20px rgba(15, 23, 42, 0.12);
            overflow-y: auto;
        }
        .drawer-panel.open {
            right: 0;
        }
        .drawer-close-btn {
            background: none;
            border: none;
            cursor: pointer;
            color: var(--muted);
            display: flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 8px;
            transition: background 0.2s ease, color 0.2s ease;
            margin-left: auto;
        }
        .drawer-close-btn:hover {
            background: #F1F5F9;
            color: var(--dark);
        }
        .drawer-nav-list {
            list-style: none;
            margin-top: 20px;
            padding: 0;
        }
        .drawer-nav-list li {
            border-bottom: 1px solid #F1F5F9;
        }
        .drawer-nav-list li:last-child {
            border-bottom: none;
        }
        .drawer-nav-list a {
            display: block;
            padding: 16px 0;
            font-size: 15px;
            font-weight: 500;
            color: var(--dark);
            transition: color 0.2s ease, padding-left 0.2s ease;
        }
        .drawer-nav-list a:hover {
            color: var(--primary);
            padding-left: 8px;
        }
        .drawer-nav-list a.active {
            color: var(--primary);
            font-weight: 600;
        }

        /* Category Hero */
        .category-hero {
            background: #FFFFFF;
            border-bottom: 1px solid var(--border);
            padding: 48px 0 56px;
        }
        .breadcrumb {
            font-size: 13px;
            color: var(--muted);
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--muted);
            transition: color 0.2s ease;
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb-sep {
            color: #CBD5E1;
        }
        .category-hero-layout {
            display: grid;
            grid-template-columns: 1.4fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .category-hero h1 {
            font-size: 32px;
            font-weight: 700;
            color: var(--dark);
            line-height: 1.3;
            margin: 0 0 16px 0;
        }
        .category-hero-sub {
            font-size: 16px;
            color: var(--body);
            line-height: 1.85;
            max-width: 600px;
            margin: 0;
        }
        .category-hero-card {
            background: var(--lightbg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 24px;
            box-shadow: var(--shadow-card);
        }
        .category-hero-card-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--dark);
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .category-hero-card-item {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 10px 0;
            border-bottom: 1px solid #F1F5F9;
            font-size: 14px;
        }
        .category-hero-card-item:last-child {
            border-bottom: none;
        }
        .category-hero-card-item .label {
            color: var(--muted);
        }
        .category-hero-card-item .value {
            font-weight: 600;
            color: var(--dark);
        }

        /* Sections */
        .section {
            padding: 56px 0;
        }
        .section-alt {
            background: #FFFFFF;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }
        .section-title {
            font-size: 24px;
            font-weight: 600;
            color: var(--dark);
            line-height: 1.35;
            margin: 0 0 8px 0;
        }
        .section-desc {
            font-size: 15px;
            color: var(--body);
            line-height: 1.85;
            margin: 0 0 32px 0;
            max-width: 720px;
        }

        /* Schedule List */
        .schedule-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .schedule-card {
            display: grid;
            grid-template-columns: 200px 1fr auto;
            gap: 20px;
            background: #FFFFFF;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 20px;
            box-shadow: var(--shadow-card);
            transition: box-shadow 0.25s ease, border-color 0.25s ease, transform 0.25s ease;
        }
        .schedule-card:hover {
            box-shadow: var(--shadow-hover);
            border-color: rgba(37, 99, 235, 0.25);
            transform: translateY(-2px);
        }
        .schedule-card-image {
            width: 200px;
            height: 140px;
            border-radius: 10px;
            overflow: hidden;
            background: #F1F5F9;
            flex-shrink: 0;
        }
        .schedule-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .schedule-card-content {
            display: flex;
            flex-direction: column;
            gap: 8px;
            min-width: 0;
        }
        .schedule-card-header {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
        }
        .schedule-date {
            font-size: 13px;
            color: var(--muted);
            font-weight: 500;
            white-space: nowrap;
        }
        .schedule-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: #F0F9FF;
            color: var(--accent);
            font-size: 12px;
            font-weight: 500;
            padding: 4px 10px;
            border-radius: 20px;
            white-space: nowrap;
        }
        .schedule-tag.hot {
            background: #FFF7ED;
            color: var(--warning);
        }
        .schedule-card-title {
            font-size: 17px;
            font-weight: 600;
            color: var(--dark);
            line-height: 1.4;
            margin: 0;
        }
        .schedule-card-desc {
            font-size: 14px;
            color: #64748B;
            line-height: 1.7;
            margin: 0;
        }
        .schedule-card-action {
            display: flex;
            align-items: center;
            justify-content: flex-end;
            flex-shrink: 0;
        }
        .btn-outline-sm {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            border: 1px solid var(--border);
            border-radius: 8px;
            padding: 8px 16px;
            font-size: 13px;
            font-weight: 600;
            color: var(--dark);
            background: #FFFFFF;
            cursor: pointer;
            transition: all 0.2s ease;
            white-space: nowrap;
            text-decoration: none;
        }
        .btn-outline-sm:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: #F8FAFF;
        }
        .btn-primary-sm {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--primary);
            border: none;
            border-radius: 8px;
            padding: 8px 16px;
            font-size: 13px;
            font-weight: 600;
            color: #FFFFFF;
            cursor: pointer;
            transition: all 0.2s ease;
            white-space: nowrap;
            text-decoration: none;
        }
        .btn-primary-sm:hover {
            background: var(--primary-dark);
            color: #FFFFFF;
            transform: translateY(-1px);
        }
        .btn-primary-sm:active {
            background: var(--primary-darker);
            transform: translateY(0);
        }

        /* Stats Grid */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .stat-card {
            background: #FFFFFF;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 24px;
            box-shadow: var(--shadow-card);
            text-align: center;
            transition: box-shadow 0.25s ease, transform 0.25s ease;
        }
        .stat-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }
        .stat-number {
            font-size: 32px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 6px;
        }
        .stat-label {
            font-size: 13px;
            color: var(--muted);
            line-height: 1.4;
        }

        /* Featured Schedule */
        .featured-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .featured-card {
            background: #FFFFFF;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: box-shadow 0.25s ease, transform 0.25s ease, border-color 0.25s ease;
        }
        .featured-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
            border-color: rgba(37, 99, 235, 0.25);
        }
        .featured-card-image {
            height: 160px;
            overflow: hidden;
            background: #F1F5F9;
        }
        .featured-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .featured-card-body {
            padding: 20px;
        }
        .featured-card-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 12px;
            font-weight: 500;
            padding: 4px 10px;
            border-radius: 20px;
            margin-bottom: 10px;
            background: #F0F9FF;
            color: var(--accent);
        }
        .featured-card-tag.star {
            background: #FEF3E2;
            color: var(--warning);
        }
        .featured-card-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--dark);
            margin: 0 0 8px 0;
            line-height: 1.4;
        }
        .featured-card-desc {
            font-size: 14px;
            color: #64748B;
            line-height: 1.7;
            margin: 0 0 12px 0;
        }
        .featured-card-meta {
            font-size: 13px;
            color: var(--muted);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        /* Deep Reading */
        .deep-reading-card {
            background: #FFFFFF;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 32px;
            box-shadow: var(--shadow-card);
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
        }
        .deep-reading-title {
            font-size: 20px;
            font-weight: 600;
            color: var(--dark);
            margin: 0 0 12px 0;
            line-height: 1.4;
        }
        .deep-reading-text {
            font-size: 15px;
            color: var(--body);
            line-height: 1.9;
            margin: 0;
            text-align: justify;
        }
        .deep-reading-text p {
            margin: 0 0 16px 0;
        }
        .deep-reading-text p:last-child {
            margin-bottom: 0;
        }

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .faq-item {
            background: #FFFFFF;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 20px 24px;
            box-shadow: var(--shadow-card);
            transition: border-color 0.2s ease, box-shadow 0.2s ease;
        }
        .faq-item:hover {
            border-color: rgba(37, 99, 235, 0.2);
            box-shadow: var(--shadow-hover);
        }
        .faq-question {
            font-size: 16px;
            font-weight: 600;
            color: var(--dark);
            margin: 0 0 10px 0;
            display: flex;
            align-items: flex-start;
            gap: 10px;
            line-height: 1.5;
        }
        .faq-question::before {
            content: 'Q';
            color: var(--primary);
            font-weight: 700;
            font-size: 15px;
            flex-shrink: 0;
            margin-top: 1px;
        }
        .faq-answer {
            font-size: 14px;
            color: var(--body);
            line-height: 1.85;
            margin: 0;
            padding-left: 26px;
        }

        /* CTA Section */
        .cta-section {
            background: var(--dark);
            color: #FFFFFF;
            padding: 56px 0;
        }
        .cta-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .cta-title {
            font-size: 24px;
            font-weight: 700;
            margin: 0 0 12px 0;
            line-height: 1.35;
            color: #FFFFFF;
        }
        .cta-desc {
            font-size: 15px;
            color: #CBD5E1;
            line-height: 1.85;
            margin: 0;
        }
        .cta-form {
            background: #FFFFFF;
            border-radius: var(--radius);
            padding: 28px;
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.2);
        }
        .cta-form-label {
            font-size: 14px;
            font-weight: 600;
            color: var(--dark);
            display: block;
            margin-bottom: 6px;
        }
        .cta-form-input {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--border);
            border-radius: 8px;
            font-size: 14px;
            color: var(--dark);
            background: #FFFFFF;
            transition: border-color 0.2s ease, box-shadow 0.2s ease;
            box-sizing: border-box;
            margin-bottom: 16px;
        }
        .cta-form-input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
            outline: none;
        }
        .cta-form-select {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--border);
            border-radius: 8px;
            font-size: 14px;
            color: var(--dark);
            background: #FFFFFF;
            transition: border-color 0.2s ease;
            box-sizing: border-box;
            margin-bottom: 16px;
            appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2394A3B8' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 14px center;
            cursor: pointer;
        }
        .cta-form-select:focus {
            border-color: var(--primary);
            outline: none;
        }
        .cta-form-btn {
            width: 100%;
            background: var(--primary);
            color: #FFFFFF;
            border: none;
            border-radius: 8px;
            padding: 14px 20px;
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.25s ease, transform 0.2s ease;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
        }
        .cta-form-btn:hover {
            background: var(--primary-dark);
            transform: translateY(-1px);
        }
        .cta-form-btn:active {
            background: var(--primary-darker);
            transform: translateY(0);
        }
        .cta-trust {
            text-align: center;
            font-size: 13px;
            color: var(--muted);
            margin-top: 12px;
        }

        /* Footer */
        .site-footer {
            background: #0F172A;
            color: #94A3B8;
            padding: 48px 0 0 0;
            border-top: 1px solid #1E293B;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 32px;
            padding-bottom: 40px;
        }
        .footer-brand {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .footer-logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 18px;
            font-weight: 700;
            color: #FFFFFF;
        }
        .footer-logo:hover {
            color: #FFFFFF;
        }
        .footer-logo svg {
            color: var(--primary);
        }
        .footer-brand-desc {
            font-size: 14px;
            line-height: 1.7;
            color: #94A3B8;
            margin: 0;
        }
        .footer-column-title {
            font-size: 15px;
            font-weight: 600;
            color: #E2E8F0;
            margin-bottom: 16px;
        }
        .footer-nav-list,
        .footer-contact-list {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-nav-list a {
            color: #94A3B8;
            font-size: 14px;
            transition: color 0.2s ease;
        }
        .footer-nav-list a:hover {
            color: #FFFFFF;
        }
        .footer-contact-list li {
            font-size: 14px;
            color: #94A3B8;
        }
        .footer-contact-list a {
            color: #94A3B8;
            transition: color 0.2s ease;
        }
        .footer-contact-list a:hover {
            color: #FFFFFF;
        }
        .footer-subscribe-desc {
            font-size: 14px;
            color: #94A3B8;
            line-height: 1.7;
            margin: 0 0 14px 0;
        }
        .footer-subscribe-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(37, 99, 235, 0.15);
            border: 1px solid rgba(37, 99, 235, 0.3);
            color: #FFFFFF;
            border-radius: 8px;
            padding: 10px 18px;
            font-size: 14px;
            font-weight: 600;
            transition: background 0.2s ease, border-color 0.2s ease;
        }
        .footer-subscribe-btn:hover {
            background: rgba(37, 99, 235, 0.25);
            border-color: rgba(37, 99, 235, 0.5);
            color: #FFFFFF;
        }
        .footer-bottom {
            border-top: 1px solid #1E293B;
            padding: 20px 0;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 6px;
            text-align: center;
            font-size: 13px;
            color: #94A3B8;
        }
        .footer-bottom-links {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
            justify-content: center;
        }
        .footer-bottom-links a {
            color: #94A3B8;
            transition: color 0.2s ease;
        }
        .footer-bottom-links a:hover {
            color: #FFFFFF;
        }
        .footer-bottom-links .sep {
            color: #475569;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .category-hero-layout {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .cta-layout {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .featured-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .schedule-card {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .schedule-card-image {
                width: 100%;
                height: 180px;
            }
            .schedule-card-action {
                justify-content: flex-start;
            }
            .featured-grid {
                grid-template-columns: 1fr;
            }
            .section {
                padding: 40px 0;
            }
            .category-hero {
                padding: 32px 0 40px;
            }
            .category-hero h1 {
                font-size: 26px;
            }
            .cta-section {
                padding: 40px 0;
            }
        }
        @media (max-width: 520px) {
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .footer-bottom {
                font-size: 12px;
            }
            .nav-cta-btn span {
                display: none;
            }
            .nav-cta-btn {
                padding: 10px 14px;
                font-size: 13px;
            }
            .schedule-card-image {
                height: 140px;
            }
            .featured-card-image {
                height: 140px;
            }
            .deep-reading-card {
                padding: 20px;
            }
        }

/* roulang page: category3 */
:root {
            --primary: #2563EB;
            --primary-dark: #1E4FC4;
            --primary-darker: #1A44A8;
            --accent: #0EA5E9;
            --dark: #0F172A;
            --body: #475569;
            --muted: #94A3B8;
            --lightbg: #F8FAFC;
            --card: #FFFFFF;
            --border: #E8EDF5;
            --success: #10B981;
            --warning: #F59E0B;
            --radius: 14px;
            --shadow-card: 0 2px 14px rgba(15, 23, 42, 0.05);
            --shadow-hover: 0 10px 28px rgba(15, 23, 42, 0.10);
            --container: 1180px;
        }

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

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

        body {
            font-family: 'Inter', 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            background-color: var(--lightbg);
            color: var(--body);
            line-height: 1.85;
            font-size: 16px;
            overflow-x: hidden;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.2s ease;
        }

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

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

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

        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            opacity: 0.85;
        }

        .container {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 16px;
        }

        @media (min-width: 640px) {
            .container {
                padding: 0 24px;
            }
        }

        /* Header */
        .site-header {
            background: #FFFFFF;
            position: sticky;
            top: 0;
            z-index: 50;
            height: 64px;
            border-bottom: 1px solid #F1F5F9;
            display: flex;
            align-items: center;
        }

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

        .header-left-group {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .logo-link {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 18px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.5px;
            user-select: none;
        }

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

        .logo-icon {
            width: 26px;
            height: 26px;
            flex-shrink: 0;
        }

        .nav-cta-btn {
            background: var(--primary);
            color: #FFFFFF;
            padding: 10px 20px;
            border-radius: 8px;
            font-size: 14px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: background 0.25s ease, transform 0.2s ease;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            white-space: nowrap;
        }

        .nav-cta-btn:hover {
            background: var(--primary-dark);
            color: #FFFFFF;
            transform: translateY(-1px);
        }

        .nav-cta-btn:active {
            background: var(--primary-darker);
            transform: translateY(0);
        }

        .hamburger-btn {
            background: none;
            border: none;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 8px;
            transition: background 0.2s ease;
            color: var(--dark);
            flex-shrink: 0;
        }

        .hamburger-btn:hover {
            background: #F1F5F9;
        }

        .drawer-overlay {
            position: fixed;
            inset: 0;
            background: rgba(15, 23, 42, 0.4);
            z-index: 60;
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.3s ease;
        }

        .drawer-overlay.active {
            opacity: 1;
            pointer-events: auto;
        }

        .drawer-panel {
            position: fixed;
            top: 0;
            right: -280px;
            width: 280px;
            height: 100vh;
            background: #FFFFFF;
            z-index: 70;
            padding: 24px;
            transition: right 0.35s ease;
            box-shadow: -4px 0 20px rgba(15, 23, 42, 0.12);
            overflow-y: auto;
        }

        .drawer-panel.open {
            right: 0;
        }

        .drawer-close-btn {
            background: none;
            border: none;
            cursor: pointer;
            color: var(--muted);
            display: flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 8px;
            transition: background 0.2s ease, color 0.2s ease;
            margin-left: auto;
        }

        .drawer-close-btn:hover {
            background: #F1F5F9;
            color: var(--dark);
        }

        .drawer-nav-list {
            list-style: none;
            margin-top: 20px;
        }

        .drawer-nav-list li {
            border-bottom: 1px solid #F1F5F9;
        }

        .drawer-nav-list li:last-child {
            border-bottom: none;
        }

        .drawer-nav-list a {
            display: block;
            padding: 16px 0;
            font-size: 15px;
            font-weight: 500;
            color: var(--dark);
            transition: color 0.2s ease, padding-left 0.2s ease;
        }

        .drawer-nav-list a:hover {
            color: var(--primary);
            padding-left: 8px;
        }

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

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

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

        @media (min-width: 1024px) {
            .section {
                padding: 88px 0;
            }
        }

        .section-white {
            background: #FFFFFF;
        }

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

        .section-title {
            font-size: 26px;
            font-weight: 700;
            line-height: 1.35;
            color: var(--dark);
            margin-bottom: 16px;
        }

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

        @media (min-width: 1024px) {
            .section-title {
                font-size: 30px;
            }
        }

        .section-subtitle {
            font-size: 15px;
            line-height: 1.8;
            color: var(--body);
            margin-bottom: 32px;
            max-width: 720px;
        }

        /* Breadcrumb */
        .breadcrumb-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--muted);
            margin-bottom: 16px;
            flex-wrap: wrap;
        }

        .breadcrumb-nav a {
            color: var(--primary);
            transition: color 0.2s;
        }

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

        .breadcrumb-nav .separator {
            color: #CBD5E1;
        }

        /* Cards */
        .card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            box-shadow: var(--shadow-card);
            padding: 24px;
            transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
        }

        @media (min-width: 768px) {
            .card {
                padding: 28px;
            }
        }

        .card:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(37, 99, 235, 0.25);
        }

        .card-title {
            font-size: 17px;
            font-weight: 600;
            line-height: 1.4;
            color: var(--dark);
            margin-bottom: 8px;
        }

        @media (min-width: 768px) {
            .card-title {
                font-size: 18px;
            }
        }

        .card-summary {
            font-size: 14px;
            line-height: 1.7;
            color: #64748B;
            margin-bottom: 16px;
        }

        .card-meta {
            font-size: 13px;
            color: var(--muted);
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
        }

        .tag-badge {
            display: inline-block;
            font-size: 12px;
            font-weight: 500;
            color: var(--primary);
            background: #EFF6FF;
            padding: 4px 10px;
            border-radius: 20px;
            border: 1px solid rgba(37, 99, 235, 0.2);
        }

        .tag-badge.warning {
            color: #D97706;
            background: #FFFBEB;
            border-color: rgba(245, 158, 11, 0.3);
        }

        .tag-badge.success {
            color: #059669;
            background: #ECFDF5;
            border-color: rgba(16, 185, 129, 0.3);
        }

        /* Buttons */
        .btn-primary {
            background: var(--primary);
            color: #FFFFFF;
            padding: 12px 24px;
            border-radius: 8px;
            font-size: 14px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: background 0.25s ease, transform 0.2s ease, box-shadow 0.2s ease;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            color: #FFFFFF;
            transform: translateY(-1px);
            box-shadow: 0 6px 18px rgba(37, 99, 235, 0.25);
        }

        .btn-primary:active {
            background: var(--primary-darker);
            transform: translateY(0);
        }

        .btn-secondary {
            background: transparent;
            color: #475569;
            padding: 12px 24px;
            border-radius: 8px;
            font-size: 14px;
            font-weight: 600;
            border: 1px solid #CBD5E1;
            cursor: pointer;
            transition: background 0.25s ease, border-color 0.25s ease, transform 0.2s ease;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
        }

        .btn-secondary:hover {
            background: #F8FAFC;
            border-color: #94A3B8;
            transform: translateY(-1px);
        }

        .btn-secondary:active {
            transform: translateY(0);
        }

        .btn-outline-light {
            background: transparent;
            color: #FFFFFF;
            padding: 12px 24px;
            border-radius: 8px;
            font-size: 14px;
            font-weight: 600;
            border: 1px solid rgba(255, 255, 255, 0.5);
            cursor: pointer;
            transition: background 0.25s ease, border-color 0.25s ease;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: rgba(255, 255, 255, 0.8);
        }

        /* Category Hero */
        .category-hero {
            background: #FFFFFF;
            padding: 48px 0 56px;
            border-bottom: 1px solid #F1F5F9;
        }

        @media (min-width: 768px) {
            .category-hero {
                padding: 64px 0 72px;
            }
        }

        .category-hero-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 32px;
            align-items: center;
        }

        @media (min-width: 768px) {
            .category-hero-grid {
                grid-template-columns: 1.2fr 0.8fr;
                gap: 48px;
            }
        }

        .category-hero h1 {
            font-size: 28px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--dark);
            margin-bottom: 16px;
        }

        @media (min-width: 768px) {
            .category-hero h1 {
                font-size: 34px;
            }
        }

        @media (min-width: 1024px) {
            .category-hero h1 {
                font-size: 38px;
            }
        }

        .category-hero .hero-subtitle {
            font-size: 15px;
            line-height: 1.8;
            color: var(--body);
            max-width: 560px;
            margin-bottom: 24px;
        }

        .category-hero .hero-image-wrap {
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            aspect-ratio: 4/3;
            background: #F1F5F9;
        }

        .category-hero .hero-image-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

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

        @media (min-width: 640px) {
            .stats-row {
                grid-template-columns: repeat(4, 1fr);
                gap: 20px;
            }
        }

        .stat-card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 20px;
            text-align: center;
            box-shadow: var(--shadow-card);
            transition: transform 0.25s ease, box-shadow 0.25s ease;
        }

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

        .stat-number {
            font-size: 28px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.3;
            margin-bottom: 4px;
        }

        .stat-label {
            font-size: 13px;
            color: var(--muted);
            line-height: 1.5;
        }

        /* Team cards */
        .team-card-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
        }

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

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

        .team-card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
            display: flex;
            flex-direction: column;
        }

        .team-card:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(37, 99, 235, 0.25);
        }

        .team-card.featured {
            grid-column: 1 / -1;
            flex-direction: row;
            flex-wrap: wrap;
        }

        @media (min-width: 640px) {
            .team-card.featured {
                grid-column: 1 / -1;
                flex-wrap: nowrap;
            }
        }

        @media (min-width: 1024px) {
            .team-card.featured {
                grid-column: span 2;
            }
        }

        .team-card .team-image {
            aspect-ratio: 16/9;
            background: #F1F5F9;
            overflow: hidden;
        }

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

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

        .team-card.featured .team-image {
            aspect-ratio: auto;
            flex: 0 0 280px;
            min-height: 220px;
        }

        @media (max-width: 639px) {
            .team-card.featured .team-image {
                flex: 1 1 100%;
                aspect-ratio: 16/9;
            }
        }

        .team-card .team-info {
            padding: 20px 24px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .team-card .team-name {
            font-size: 17px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 4px;
        }

        .team-card .team-league {
            font-size: 13px;
            color: var(--primary);
            font-weight: 500;
            margin-bottom: 10px;
        }

        .team-card .team-summary {
            font-size: 14px;
            line-height: 1.7;
            color: #64748B;
            margin-bottom: 16px;
            flex: 1;
        }

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

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

        /* Featured articles */
        .featured-article-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 24px;
        }

        @media (min-width: 768px) {
            .featured-article-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }

        .featured-article-card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
            display: flex;
            flex-direction: column;
        }

        .featured-article-card:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(37, 99, 235, 0.25);
        }

        .featured-article-card .article-image {
            aspect-ratio: 16/9;
            background: #F1F5F9;
            overflow: hidden;
        }

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

        .featured-article-card:hover .article-image img {
            transform: scale(1.03);
        }

        .featured-article-card .article-body {
            padding: 20px 24px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .featured-article-card .article-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--dark);
            line-height: 1.45;
            margin-bottom: 8px;
        }

        .featured-article-card .article-summary {
            font-size: 14px;
            line-height: 1.65;
            color: #64748B;
            margin-bottom: 12px;
            flex: 1;
        }

        /* FAQ */
        .faq-list {
            max-width: 820px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: 12px;
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: border-color 0.25s ease;
        }

        .faq-item:hover {
            border-color: rgba(37, 99, 235, 0.25);
        }

        .faq-question {
            padding: 18px 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            cursor: pointer;
            background: none;
            border: none;
            width: 100%;
            font-size: 15px;
            font-weight: 600;
            color: var(--dark);
            text-align: left;
            line-height: 1.5;
        }

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

        .faq-question .icon-chevron {
            flex-shrink: 0;
            width: 20px;
            height: 20px;
            color: var(--muted);
            transition: transform 0.3s ease;
        }

        .faq-item.open .faq-question .icon-chevron {
            transform: rotate(180deg);
            color: var(--primary);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.3s ease;
            padding: 0 20px;
        }

        .faq-item.open .faq-answer {
            max-height: 600px;
            padding: 0 20px 18px;
        }

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

        /* CTA */
        .cta-panel {
            background: linear-gradient(135deg, #0F172A 0%, #1E3A8A 55%, #2563EB 100%);
            border-radius: var(--radius);
            padding: 40px 28px;
            color: #FFFFFF;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        @media (min-width: 768px) {
            .cta-panel {
                padding: 56px 48px;
            }
        }

        .cta-panel::before {
            content: '';
            position: absolute;
            top: -60%;
            right: -20%;
            width: 400px;
            height: 400px;
            background: rgba(255, 255, 255, 0.05);
            border-radius: 50%;
        }

        .cta-panel::after {
            content: '';
            position: absolute;
            bottom: -40%;
            left: -10%;
            width: 300px;
            height: 300px;
            background: rgba(14, 165, 233, 0.15);
            border-radius: 50%;
        }

        .cta-panel .cta-content {
            position: relative;
            z-index: 2;
        }

        .cta-panel .cta-title {
            font-size: 24px;
            font-weight: 700;
            color: #FFFFFF;
            line-height: 1.4;
            margin-bottom: 12px;
        }

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

        .cta-panel .cta-desc {
            font-size: 14px;
            line-height: 1.75;
            color: rgba(255, 255, 255, 0.85);
            max-width: 560px;
            margin: 0 auto 24px;
        }

        .cta-panel .cta-form-row {
            display: flex;
            flex-direction: column;
            gap: 12px;
            max-width: 460px;
            margin: 0 auto;
        }

        @media (min-width: 640px) {
            .cta-panel .cta-form-row {
                flex-direction: row;
                gap: 8px;
            }
        }

        .cta-panel .cta-input {
            flex: 1;
            padding: 12px 16px;
            border-radius: 8px;
            border: 1px solid rgba(255, 255, 255, 0.3);
            background: rgba(255, 255, 255, 0.1);
            color: #FFFFFF;
            font-size: 14px;
            outline: none;
            transition: border-color 0.25s ease, background 0.25s ease;
        }

        .cta-panel .cta-input::placeholder {
            color: rgba(255, 255, 255, 0.6);
        }

        .cta-panel .cta-input:focus {
            border-color: rgba(255, 255, 255, 0.7);
            background: rgba(255, 255, 255, 0.18);
        }

        .cta-panel .cta-submit {
            background: #FFFFFF;
            color: var(--primary);
            padding: 12px 28px;
            border-radius: 8px;
            font-size: 14px;
            font-weight: 700;
            border: none;
            cursor: pointer;
            transition: background 0.25s ease, transform 0.2s ease;
            white-space: nowrap;
        }

        .cta-panel .cta-submit:hover {
            background: #F0F7FF;
            transform: translateY(-1px);
        }

        .cta-panel .cta-submit:active {
            transform: translateY(0);
        }

        .cta-panel .cta-trust {
            font-size: 12px;
            color: rgba(255, 255, 255, 0.65);
            margin-top: 12px;
        }

        /* Deep article */
        .deep-article-card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            box-shadow: var(--shadow-card);
            overflow: hidden;
        }

        .deep-article-card .deep-article-image {
            aspect-ratio: 21/9;
            background: #F1F5F9;
            overflow: hidden;
        }

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

        .deep-article-card .deep-article-body {
            padding: 28px 24px;
        }

        @media (min-width: 768px) {
            .deep-article-card .deep-article-body {
                padding: 32px 36px;
            }
        }

        .deep-article-card .deep-article-title {
            font-size: 20px;
            font-weight: 700;
            color: var(--dark);
            line-height: 1.4;
            margin-bottom: 12px;
        }

        @media (min-width: 768px) {
            .deep-article-card .deep-article-title {
                font-size: 22px;
            }
        }

        .deep-article-card .deep-article-text {
            font-size: 15px;
            line-height: 1.85;
            color: var(--body);
            margin-bottom: 16px;
        }

        .deep-article-card .deep-article-text p {
            margin-bottom: 16px;
        }

        .deep-article-card .deep-article-text p:last-child {
            margin-bottom: 0;
        }

        /* Footer */
        .site-footer {
            background: #FFFFFF;
            border-top: 1px solid #F1F5F9;
            padding-top: 48px;
            margin-top: 0;
        }

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

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

        @media (min-width: 1024px) {
            .site-footer .footer-grid {
                grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
                gap: 40px;
            }
        }

        .site-footer .footer-brand-desc {
            font-size: 13px;
            line-height: 1.7;
            color: var(--muted);
            margin-top: 8px;
            max-width: 300px;
        }

        .site-footer .footer-logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 18px;
            font-weight: 700;
            color: var(--primary);
        }

        .site-footer .footer-logo:hover {
            color: var(--primary-dark);
        }

        .site-footer .footer-column-title {
            font-size: 14px;
            font-weight: 600;
            color: var(--dark);
            margin-bottom: 12px;
        }

        .site-footer .footer-nav-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .site-footer .footer-nav-list a {
            font-size: 13px;
            color: var(--muted);
            transition: color 0.2s;
        }

        .site-footer .footer-nav-list a:hover {
            color: var(--primary);
        }

        .site-footer .footer-contact-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
            font-size: 13px;
            color: var(--muted);
        }

        .site-footer .footer-subscribe-desc {
            font-size: 13px;
            color: var(--muted);
            line-height: 1.7;
            margin-bottom: 12px;
        }

        .site-footer .footer-subscribe-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 18px;
            border-radius: 8px;
            border: 1px solid var(--border);
            color: var(--primary);
            font-size: 13px;
            font-weight: 500;
            transition: background 0.25s ease, border-color 0.25s ease;
        }

        .site-footer .footer-subscribe-btn:hover {
            background: #F0F7FF;
            border-color: rgba(37, 99, 235, 0.3);
            color: var(--primary-dark);
        }

        .site-footer .footer-bottom {
            background: var(--dark);
            color: var(--muted);
            padding: 20px 0;
            font-size: 12px;
            display: flex;
            flex-direction: column;
            gap: 12px;
            align-items: center;
            text-align: center;
            margin: 0 -24px;
            padding-left: 24px;
            padding-right: 24px;
        }

        @media (min-width: 768px) {
            .site-footer .footer-bottom {
                flex-direction: row;
                justify-content: space-between;
                flex-wrap: wrap;
                text-align: left;
                gap: 16px;
                margin: 0;
                padding-left: 0;
                padding-right: 0;
            }
        }

        .site-footer .footer-bottom a {
            color: var(--muted);
            transition: color 0.2s;
        }

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

        .site-footer .footer-bottom-links {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            justify-content: center;
        }

        /* Responsive drawer adjustments */
        @media (max-width: 639px) {
            .nav-cta-btn span {
                display: none;
            }

            .nav-cta-btn {
                padding: 10px 16px;
                font-size: 13px;
            }

            .category-hero h1 {
                font-size: 26px;
            }

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

            .team-card .team-info {
                padding: 16px 18px;
            }

            .cta-panel {
                padding: 32px 20px;
            }

            .cta-panel .cta-title {
                font-size: 22px;
            }
        }

        @media (min-width: 640px) and (max-width: 1023px) {
            .stats-row {
                grid-template-columns: repeat(4, 1fr);
            }
        }

        /* Transitions */
        .fade-in {
            animation: fadeInUp 0.6s ease forwards;
        }

        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(16px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* View more button centered */
        .view-more-wrap {
            text-align: center;
            margin-top: 32px;
        }

/* roulang page: category4 */
:root {
            --primary: #2563EB;
            --primary-dark: #1E4FC4;
            --primary-darker: #1A44A8;
            --accent: #0EA5E9;
            --dark: #0F172A;
            --body: #475569;
            --muted: #94A3B8;
            --lightbg: #F8FAFC;
            --card: #FFFFFF;
            --border: #E8EDF5;
            --success: #10B981;
            --warning: #F59E0B;
            --radius: 14px;
            --shadow-card: 0 2px 14px rgba(15, 23, 42, 0.05);
            --shadow-hover: 0 10px 28px rgba(15, 23, 42, 0.10);
            --container: 1180px;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: 'Inter', 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            background-color: var(--lightbg);
            color: var(--body);
            line-height: 1.85;
            font-size: 16px;
            overflow-x: hidden;
            margin: 0;
            padding: 0;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover {
            color: var(--primary-dark);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
            color: inherit;
        }
        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            opacity: 0.7;
        }
        .container {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 16px;
        }
        @media (min-width: 640px) {
            .container {
                padding: 0 24px;
            }
        }
        .site-header {
            background: #FFFFFF;
            position: sticky;
            top: 0;
            z-index: 50;
            height: 64px;
            border-bottom: 1px solid #F1F5F9;
            display: flex;
            align-items: center;
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }
        .logo-link {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 18px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.5px;
            user-select: none;
        }
        .logo-link:hover {
            color: var(--primary-dark);
        }
        .logo-icon {
            width: 28px;
            height: 28px;
            flex-shrink: 0;
        }
        .nav-cta-btn {
            background: var(--primary);
            color: #FFFFFF;
            padding: 10px 20px;
            border-radius: 8px;
            font-size: 14px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: background 0.25s ease, transform 0.2s ease;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            white-space: nowrap;
        }
        .nav-cta-btn:hover {
            background: var(--primary-dark);
            color: #FFFFFF;
            transform: translateY(-1px);
        }
        .nav-cta-btn:active {
            background: var(--primary-darker);
            transform: translateY(0);
        }
        .hamburger-btn {
            background: none;
            border: none;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 8px;
            transition: background 0.2s ease;
            color: var(--dark);
            flex-shrink: 0;
        }
        .hamburger-btn:hover {
            background: #F1F5F9;
        }
        .drawer-overlay {
            position: fixed;
            inset: 0;
            background: rgba(15, 23, 42, 0.4);
            z-index: 60;
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.3s ease;
        }
        .drawer-overlay.active {
            opacity: 1;
            pointer-events: auto;
        }
        .drawer-panel {
            position: fixed;
            top: 0;
            right: -280px;
            width: 280px;
            height: 100vh;
            background: #FFFFFF;
            z-index: 70;
            padding: 24px;
            transition: right 0.35s ease;
            box-shadow: -4px 0 20px rgba(15, 23, 42, 0.12);
            overflow-y: auto;
        }
        .drawer-panel.open {
            right: 0;
        }
        .drawer-close-btn {
            background: none;
            border: none;
            cursor: pointer;
            color: var(--muted);
            display: flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 8px;
            transition: background 0.2s ease, color 0.2s ease;
            margin-left: auto;
        }
        .drawer-close-btn:hover {
            background: #F1F5F9;
            color: var(--dark);
        }
        .drawer-nav-list {
            list-style: none;
            margin-top: 20px;
            padding: 0;
        }
        .drawer-nav-list li {
            border-bottom: 1px solid #F1F5F9;
        }
        .drawer-nav-list li:last-child {
            border-bottom: none;
        }
        .drawer-nav-list a {
            display: block;
            padding: 16px 0;
            font-size: 15px;
            font-weight: 500;
            color: var(--dark);
            transition: color 0.2s ease, padding-left 0.2s ease;
        }
        .drawer-nav-list a:hover {
            color: var(--primary);
            padding-left: 8px;
        }
        .drawer-nav-list a.active {
            color: var(--primary);
            font-weight: 600;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--muted);
            margin-bottom: 12px;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--primary);
        }
        .breadcrumb a:hover {
            color: var(--primary-dark);
        }
        .breadcrumb .separator {
            color: var(--muted);
        }
        .breadcrumb .current {
            color: var(--muted);
        }
        .category-hero {
            background: #FFFFFF;
            border-bottom: 1px solid var(--border);
            padding: 36px 0 40px;
            position: relative;
        }
        .category-hero .container {
            display: grid;
            grid-template-columns: 1fr;
            gap: 24px;
            align-items: start;
        }
        @media (min-width: 768px) {
            .category-hero .container {
                grid-template-columns: 1fr 1.4fr;
                gap: 40px;
            }
        }
        .category-hero h1 {
            font-size: 26px;
            font-weight: 700;
            color: var(--dark);
            line-height: 1.3;
            margin: 0 0 12px 0;
        }
        @media (min-width: 640px) {
            .category-hero h1 {
                font-size: 32px;
            }
        }
        @media (min-width: 1024px) {
            .category-hero h1 {
                font-size: 36px;
            }
        }
        .category-hero .hero-subtitle {
            font-size: 15px;
            color: var(--body);
            line-height: 1.8;
            margin: 0 0 16px 0;
        }
        .category-hero .hero-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            font-size: 13px;
            color: var(--muted);
        }
        .category-hero .hero-meta span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .category-hero .hero-visual {
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--lightbg);
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--border);
            min-height: 220px;
        }
        .category-hero .hero-visual img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: var(--radius);
        }
        .section {
            padding: 48px 0;
        }
        @media (min-width: 640px) {
            .section {
                padding: 56px 0;
            }
        }
        @media (min-width: 1024px) {
            .section {
                padding: 64px 0;
            }
        }
        .section-alt {
            background: #FFFFFF;
        }
        .section-title {
            font-size: 22px;
            font-weight: 600;
            color: var(--dark);
            line-height: 1.35;
            margin: 0 0 8px 0;
        }
        @media (min-width: 640px) {
            .section-title {
                font-size: 26px;
            }
        }
        .section-desc {
            font-size: 15px;
            color: var(--body);
            line-height: 1.75;
            margin: 0 0 24px 0;
            max-width: 720px;
        }
        .guide-list {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
        }
        @media (min-width: 768px) {
            .guide-list {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }
        .guide-card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
            display: flex;
            flex-direction: column;
        }
        .guide-card:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(37, 99, 235, 0.25);
        }
        .guide-card .card-img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            display: block;
        }
        .guide-card .card-body {
            padding: 18px 20px 20px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .guide-card .card-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 500;
            color: var(--primary);
            background: #EFF6FF;
            padding: 4px 10px;
            border-radius: 20px;
            margin-bottom: 10px;
            width: fit-content;
        }
        .guide-card .card-title {
            font-size: 17px;
            font-weight: 600;
            color: var(--dark);
            line-height: 1.4;
            margin: 0 0 8px 0;
        }
        .guide-card .card-summary {
            font-size: 14px;
            color: #64748B;
            line-height: 1.7;
            margin: 0 0 12px 0;
            flex: 1;
        }
        .guide-card .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 13px;
            color: var(--muted);
            margin-top: auto;
            padding-top: 12px;
            border-top: 1px solid #F1F5F9;
        }
        .guide-card .card-meta .date {
            color: var(--muted);
        }
        .guide-card .card-more {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            background: none;
            border: none;
            cursor: pointer;
            padding: 0;
            transition: color 0.2s ease;
        }
        .guide-card .card-more:hover {
            color: var(--primary-dark);
        }
        .data-stats-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
        }
        @media (min-width: 640px) {
            .data-stats-grid {
                grid-template-columns: 1fr 1fr 1fr;
            }
        }
        @media (min-width: 1024px) {
            .data-stats-grid {
                grid-template-columns: 1fr 1fr 1fr 1fr 1fr;
            }
        }
        .data-stat-item {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 20px 16px;
            text-align: center;
            box-shadow: var(--shadow-card);
        }
        .data-stat-item .stat-number {
            font-size: 28px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
        }
        @media (min-width: 640px) {
            .data-stat-item .stat-number {
                font-size: 32px;
            }
        }
        .data-stat-item .stat-label {
            font-size: 13px;
            color: var(--muted);
            margin-top: 4px;
        }
        .featured-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
        }
        @media (min-width: 640px) {
            .featured-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }
        @media (min-width: 1024px) {
            .featured-grid {
                grid-template-columns: 1fr 1fr 1fr;
            }
        }
        .featured-card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
        }
        .featured-card:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(37, 99, 235, 0.25);
        }
        .featured-card .featured-img {
            width: 100%;
            height: 160px;
            object-fit: cover;
        }
        .featured-card .featured-body {
            padding: 16px 18px 18px;
        }
        .featured-card .featured-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--dark);
            margin: 0 0 6px 0;
            line-height: 1.4;
        }
        .featured-card .featured-desc {
            font-size: 13px;
            color: #64748B;
            line-height: 1.65;
            margin: 0;
        }
        .faq-list {
            max-width: 820px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            margin-bottom: 12px;
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: border-color 0.2s ease;
        }
        .faq-item:hover {
            border-color: rgba(37, 99, 235, 0.25);
        }
        .faq-question {
            width: 100%;
            background: none;
            border: none;
            cursor: pointer;
            padding: 18px 20px;
            font-size: 15px;
            font-weight: 600;
            color: var(--dark);
            text-align: left;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            transition: color 0.2s ease;
            line-height: 1.5;
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: #F1F5F9;
            font-size: 16px;
            font-weight: 700;
            color: var(--primary);
            transition: transform 0.3s ease, background 0.2s ease;
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            background: #EFF6FF;
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.3s ease;
            padding: 0 20px;
            font-size: 14px;
            color: #64748B;
            line-height: 1.8;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 20px 18px;
        }
        .cta-section {
            background: #FFFFFF;
            border-top: 1px solid var(--border);
        }
        .cta-box {
            background: linear-gradient(135deg, #0F172A 0%, #1E3A8A 55%, #2563EB 100%);
            border-radius: 16px;
            padding: 36px 28px;
            color: #FFFFFF;
            display: grid;
            grid-template-columns: 1fr;
            gap: 24px;
            align-items: center;
        }
        @media (min-width: 768px) {
            .cta-box {
                grid-template-columns: 1.5fr 1fr;
                padding: 44px 40px;
                gap: 40px;
            }
        }
        .cta-box h2 {
            font-size: 22px;
            font-weight: 700;
            color: #FFFFFF;
            margin: 0 0 8px 0;
            line-height: 1.35;
        }
        @media (min-width: 640px) {
            .cta-box h2 {
                font-size: 28px;
            }
        }
        .cta-box p {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.85);
            line-height: 1.75;
            margin: 0 0 16px 0;
        }
        .cta-form {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .cta-form input,
        .cta-form select {
            padding: 12px 16px;
            border-radius: 8px;
            border: 1px solid rgba(255, 255, 255, 0.3);
            background: rgba(255, 255, 255, 0.1);
            color: #FFFFFF;
            font-size: 14px;
            width: 100%;
            backdrop-filter: blur(4px);
        }
        .cta-form input::placeholder {
            color: rgba(255, 255, 255, 0.6);
        }
        .cta-form select option {
            color: var(--dark);
            background: #FFFFFF;
        }
        .cta-form input:focus,
        .cta-form select:focus {
            outline: 2px solid #FFFFFF;
            outline-offset: 2px;
            border-color: rgba(255, 255, 255, 0.6);
        }
        .cta-submit-btn {
            background: #FFFFFF;
            color: var(--primary);
            padding: 12px 24px;
            border-radius: 8px;
            font-size: 14px;
            font-weight: 700;
            border: none;
            cursor: pointer;
            transition: background 0.25s ease, transform 0.2s ease;
            width: 100%;
        }
        .cta-submit-btn:hover {
            background: #F1F5F9;
            transform: translateY(-1px);
        }
        .cta-submit-btn:active {
            transform: translateY(0);
        }
        .cta-trust {
            font-size: 12px;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 4px;
            text-align: center;
        }
        .deep-reading {
            background: #FFFFFF;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 28px 24px;
            box-shadow: var(--shadow-card);
        }
        @media (min-width: 640px) {
            .deep-reading {
                padding: 36px 32px;
            }
        }
        .deep-reading h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--dark);
            margin: 0 0 16px 0;
            line-height: 1.4;
        }
        .deep-reading p {
            font-size: 15px;
            color: var(--body);
            line-height: 1.9;
            margin: 0 0 14px 0;
        }
        .deep-reading .read-more-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--primary);
            color: #FFFFFF;
            padding: 10px 20px;
            border-radius: 8px;
            font-size: 14px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: background 0.25s ease, transform 0.2s ease;
            margin-top: 8px;
        }
        .deep-reading .read-more-btn:hover {
            background: var(--primary-dark);
            transform: translateY(-1px);
        }
        .site-footer {
            background: #0F172A;
            color: #94A3B8;
            padding: 48px 0 0;
            margin-top: 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 32px;
            padding-bottom: 36px;
        }
        @media (min-width: 640px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
        }
        @media (min-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1.5fr 1fr 1fr 1fr;
                gap: 40px;
            }
        }
        .footer-logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 18px;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 12px;
        }
        .footer-logo:hover {
            color: #FFFFFF;
        }
        .footer-brand-desc {
            font-size: 14px;
            color: #94A3B8;
            line-height: 1.7;
            margin: 0;
            max-width: 300px;
        }
        .footer-column-title {
            font-size: 14px;
            font-weight: 600;
            color: #FFFFFF;
            margin-bottom: 14px;
        }
        .footer-nav-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-nav-list li {
            margin-bottom: 8px;
        }
        .footer-nav-list a {
            color: #94A3B8;
            font-size: 14px;
            transition: color 0.2s ease;
        }
        .footer-nav-list a:hover {
            color: #FFFFFF;
        }
        .footer-contact-list {
            list-style: none;
            padding: 0;
            margin: 0;
            font-size: 14px;
            color: #94A3B8;
            line-height: 2;
        }
        .footer-subscribe-desc {
            font-size: 14px;
            color: #94A3B8;
            line-height: 1.7;
            margin: 0 0 12px 0;
        }
        .footer-subscribe-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, 0.08);
            color: #FFFFFF;
            padding: 10px 18px;
            border-radius: 8px;
            font-size: 13px;
            font-weight: 500;
            transition: background 0.2s ease;
        }
        .footer-subscribe-btn:hover {
            background: rgba(255, 255, 255, 0.15);
            color: #FFFFFF;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 20px 0;
            font-size: 12px;
            color: #94A3B8;
            display: flex;
            flex-wrap: wrap;
            gap: 12px 24px;
            align-items: center;
            justify-content: center;
            text-align: center;
        }
        .footer-bottom a {
            color: #94A3B8;
            transition: color 0.2s ease;
        }
        .footer-bottom a:hover {
            color: #FFFFFF;
        }
        .footer-bottom-links {
            display: flex;
            gap: 16px;
            align-items: center;
        }
        .list-more-btn {
            display: flex;
            justify-content: center;
            margin-top: 24px;
        }
        .list-more-btn .btn-primary {
            background: var(--primary);
            color: #FFFFFF;
            padding: 12px 28px;
            border-radius: 8px;
            font-size: 14px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: background 0.25s ease, transform 0.2s ease;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .list-more-btn .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-1px);
        }
        .tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 500;
            color: var(--primary);
            background: #EFF6FF;
            padding: 4px 12px;
            border-radius: 16px;
            margin-right: 6px;
            margin-bottom: 4px;
        }
        .tag.green {
            color: #065F46;
            background: #ECFDF5;
        }
        .tag.orange {
            color: #92400E;
            background: #FFFBEB;
        }
        .tag.blue {
            color: #1E40AF;
            background: #DBEAFE;
        }

/* roulang page: category5 */
:root {
            --primary: #2563EB;
            --primary-dark: #1E4FC4;
            --primary-darker: #1A44A8;
            --accent: #0EA5E9;
            --dark: #0F172A;
            --body: #475569;
            --muted: #94A3B8;
            --lightbg: #F8FAFC;
            --card: #FFFFFF;
            --border: #E8EDF5;
            --success: #10B981;
            --warning: #F59E0B;
            --radius: 14px;
            --shadow-card: 0 2px 14px rgba(15, 23, 42, 0.05);
            --shadow-hover: 0 10px 28px rgba(15, 23, 42, 0.10);
            --container: 1180px;
        }

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

        body {
            font-family: 'Inter', 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            background-color: var(--lightbg);
            color: var(--body);
            line-height: 1.85;
            font-size: 16px;
            overflow-x: hidden;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.2s ease;
        }

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

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

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

        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            opacity: 0.7;
        }

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

        @media (max-width: 640px) {
            .container {
                padding: 0 16px;
            }
        }

        /* Header Navigation */
        .site-header {
            background: #FFFFFF;
            position: sticky;
            top: 0;
            z-index: 50;
            height: 64px;
            border-bottom: 1px solid #F1F5F9;
            display: flex;
            align-items: center;
        }

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

        .logo-link {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 18px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.5px;
            user-select: none;
        }

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

        .logo-icon {
            width: 28px;
            height: 28px;
            flex-shrink: 0;
        }

        .nav-cta-btn {
            background: var(--primary);
            color: #FFFFFF;
            padding: 10px 20px;
            border-radius: 8px;
            font-size: 14px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: background 0.25s ease, transform 0.2s ease;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            white-space: nowrap;
        }

        .nav-cta-btn:hover {
            background: var(--primary-dark);
            color: #FFFFFF;
            transform: translateY(-1px);
        }

        .nav-cta-btn:active {
            background: var(--primary-darker);
            transform: translateY(0);
        }

        .hamburger-btn {
            background: none;
            border: none;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 8px;
            transition: background 0.2s ease;
            color: var(--dark);
            flex-shrink: 0;
        }

        .hamburger-btn:hover {
            background: #F1F5F9;
        }

        .drawer-overlay {
            position: fixed;
            inset: 0;
            background: rgba(15, 23, 42, 0.4);
            z-index: 60;
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.3s ease;
        }

        .drawer-overlay.active {
            opacity: 1;
            pointer-events: auto;
        }

        .drawer-panel {
            position: fixed;
            top: 0;
            right: -280px;
            width: 280px;
            height: 100vh;
            background: #FFFFFF;
            z-index: 70;
            padding: 24px;
            transition: right 0.35s ease;
            box-shadow: -4px 0 20px rgba(15, 23, 42, 0.12);
            overflow-y: auto;
        }

        .drawer-panel.open {
            right: 0;
        }

        .drawer-close-btn {
            background: none;
            border: none;
            cursor: pointer;
            color: var(--muted);
            display: flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 8px;
            transition: background 0.2s ease, color 0.2s ease;
            margin-left: auto;
        }

        .drawer-close-btn:hover {
            background: #F1F5F9;
            color: var(--dark);
        }

        .drawer-nav-list {
            list-style: none;
            margin-top: 20px;
        }

        .drawer-nav-list li {
            border-bottom: 1px solid #F1F5F9;
        }

        .drawer-nav-list li:last-child {
            border-bottom: none;
        }

        .drawer-nav-list a {
            display: block;
            padding: 16px 0;
            font-size: 15px;
            font-weight: 500;
            color: var(--dark);
            transition: color 0.2s ease, padding-left 0.2s ease;
        }

        .drawer-nav-list a:hover {
            color: var(--primary);
            padding-left: 8px;
        }

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

        /* Category H1 area */
        .category-hero {
            background: #FFFFFF;
            border-bottom: 1px solid var(--border);
            padding: 40px 0 32px;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--muted);
            margin-bottom: 16px;
            flex-wrap: wrap;
        }

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

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

        .breadcrumb .separator {
            color: #CBD5E1;
        }

        .category-hero h1 {
            font-size: 30px;
            font-weight: 700;
            color: var(--dark);
            line-height: 1.3;
            margin-bottom: 12px;
        }

        .category-hero .subtitle {
            font-size: 16px;
            color: var(--body);
            line-height: 1.8;
            max-width: 720px;
        }

        .category-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 16px;
        }

        .category-tag {
            background: #EFF6FF;
            color: var(--primary);
            font-size: 13px;
            padding: 6px 14px;
            border-radius: 20px;
            font-weight: 500;
            display: inline-block;
        }

        /* Community post list */
        .post-list-section {
            padding: 48px 0 56px;
        }

        .section-title {
            font-size: 22px;
            font-weight: 600;
            color: var(--dark);
            line-height: 1.35;
            margin-bottom: 8px;
        }

        .section-desc {
            font-size: 15px;
            color: var(--body);
            margin-bottom: 24px;
        }

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

        .post-card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 20px;
            display: flex;
            gap: 20px;
            transition: box-shadow 0.25s ease, transform 0.25s ease, border-color 0.25s ease;
        }

        .post-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
            border-color: rgba(37, 99, 235, 0.25);
        }

        .post-card-thumb {
            width: 160px;
            height: 110px;
            border-radius: 10px;
            overflow: hidden;
            flex-shrink: 0;
        }

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

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

        .post-card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: var(--muted);
            margin-bottom: 6px;
            flex-wrap: wrap;
        }

        .post-card-title {
            font-size: 17px;
            font-weight: 600;
            color: var(--dark);
            line-height: 1.4;
            margin-bottom: 6px;
        }

        .post-card-excerpt {
            font-size: 14px;
            color: #64748B;
            line-height: 1.7;
            margin-bottom: 10px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .post-card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .post-tag {
            background: #F1F5F9;
            color: #475569;
            font-size: 12px;
            padding: 3px 10px;
            border-radius: 4px;
            font-weight: 500;
        }

        .read-more-btn {
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            background: none;
            border: none;
            cursor: pointer;
            padding: 4px 0;
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: color 0.2s ease;
        }

        .read-more-btn:hover {
            color: var(--primary-dark);
        }

        .list-bottom-btn-wrapper {
            text-align: center;
            margin-top: 28px;
        }

        .load-more-btn {
            background: var(--primary);
            color: #FFFFFF;
            padding: 12px 32px;
            border-radius: 8px;
            font-size: 14px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: background 0.25s ease, transform 0.2s ease;
        }

        .load-more-btn:hover {
            background: var(--primary-dark);
            transform: translateY(-1px);
        }

        /* Data overview */
        .data-overview-section {
            padding: 48px 0;
            background: #FFFFFF;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .data-strip {
            display: flex;
            gap: 32px;
            flex-wrap: wrap;
            align-items: stretch;
        }

        .data-item {
            flex: 1;
            min-width: 160px;
            text-align: center;
            padding: 16px 12px;
        }

        .data-item .data-number {
            font-size: 30px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
        }

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

        /* Featured section */
        .featured-section {
            padding: 48px 0 56px;
        }

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

        .featured-card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 20px;
            display: flex;
            gap: 16px;
            transition: box-shadow 0.25s ease, transform 0.25s ease, border-color 0.25s ease;
        }

        .featured-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
            border-color: rgba(37, 99, 235, 0.25);
        }

        .featured-card-thumb {
            width: 100px;
            height: 100px;
            border-radius: 8px;
            overflow: hidden;
            flex-shrink: 0;
        }

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

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

        .featured-badge {
            display: inline-block;
            background: #FEF3C7;
            color: #D97706;
            font-size: 12px;
            font-weight: 600;
            padding: 2px 10px;
            border-radius: 4px;
            margin-bottom: 6px;
        }

        .featured-card-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--dark);
            line-height: 1.4;
            margin-bottom: 6px;
        }

        .featured-card-excerpt {
            font-size: 14px;
            color: #64748B;
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        /* FAQ Section */
        .faq-section {
            padding: 48px 0 56px;
            background: #FFFFFF;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            margin-top: 20px;
        }

        .faq-item {
            border: 1px solid var(--border);
            border-radius: 10px;
            overflow: hidden;
            transition: border-color 0.2s ease;
        }

        .faq-item:hover {
            border-color: rgba(37, 99, 235, 0.25);
        }

        .faq-question {
            width: 100%;
            background: #F8FAFC;
            border: none;
            text-align: left;
            padding: 16px 20px;
            font-size: 15px;
            font-weight: 600;
            color: var(--dark);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            transition: background 0.2s ease;
        }

        .faq-question:hover {
            background: #F1F5F9;
        }

        .faq-toggle-icon {
            flex-shrink: 0;
            width: 20px;
            height: 20px;
            color: var(--primary);
            transition: transform 0.3s ease;
        }

        .faq-item.open .faq-toggle-icon {
            transform: rotate(180deg);
        }

        .faq-answer {
            padding: 0 20px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            font-size: 14px;
            color: #475569;
            line-height: 1.75;
        }

        .faq-item.open .faq-answer {
            padding: 16px 20px;
            max-height: 300px;
        }

        /* CTA Section */
        .community-cta-section {
            padding: 56px 0;
            background: linear-gradient(135deg, #0F172A 0%, #1E3A8A 55%, #2563EB 100%);
            color: #FFFFFF;
            text-align: center;
            border-radius: 0;
        }

        .community-cta-section h2 {
            font-size: 24px;
            font-weight: 600;
            margin-bottom: 12px;
            color: #FFFFFF;
        }

        .community-cta-section p {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 24px;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
        }

        .cta-primary-btn {
            background: #FFFFFF;
            color: var(--primary);
            padding: 14px 36px;
            border-radius: 8px;
            font-size: 15px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: background 0.25s ease, transform 0.2s ease;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .cta-primary-btn:hover {
            background: #F1F5F9;
            transform: translateY(-1px);
        }

        /* Deep reading */
        .deep-reading-section {
            padding: 48px 0 56px;
        }

        .deep-reading-card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 28px;
            box-shadow: var(--shadow-card);
        }

        .deep-reading-header {
            display: flex;
            align-items: flex-start;
            gap: 20px;
            margin-bottom: 16px;
        }

        .deep-reading-thumb {
            width: 180px;
            height: 120px;
            border-radius: 10px;
            overflow: hidden;
            flex-shrink: 0;
        }

        .deep-reading-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .deep-reading-title {
            font-size: 20px;
            font-weight: 600;
            color: var(--dark);
            line-height: 1.4;
            margin-bottom: 6px;
        }

        .deep-reading-meta {
            font-size: 13px;
            color: var(--muted);
        }

        .deep-reading-body {
            font-size: 15px;
            color: #475569;
            line-height: 1.85;
            margin-bottom: 16px;
        }

        .deep-reading-body p {
            margin-bottom: 12px;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .featured-grid {
                grid-template-columns: 1fr;
            }
            .data-strip {
                gap: 16px;
            }
        }

        @media (max-width: 768px) {
            .category-hero h1 {
                font-size: 24px;
            }
            .post-card {
                flex-direction: column;
                padding: 16px;
            }
            .post-card-thumb {
                width: 100%;
                height: 160px;
            }
            .featured-card {
                flex-direction: column;
                padding: 16px;
            }
            .featured-card-thumb {
                width: 100%;
                height: 140px;
            }
            .deep-reading-header {
                flex-direction: column;
            }
            .deep-reading-thumb {
                width: 100%;
                height: 160px;
            }
            .data-strip {
                flex-direction: column;
                gap: 8px;
            }
            .data-item {
                min-width: auto;
                text-align: left;
                display: flex;
                align-items: center;
                justify-content: space-between;
                border-bottom: 1px solid #F1F5F9;
            }
            .data-item:last-child {
                border-bottom: none;
            }
            .nav-cta-btn span {
                display: none;
            }
        }

        @media (max-width: 520px) {
            .category-hero {
                padding: 28px 0 24px;
            }
            .category-hero h1 {
                font-size: 22px;
            }
            .section-title {
                font-size: 19px;
            }
            .post-card-title {
                font-size: 15px;
            }
            .featured-card-title {
                font-size: 14px;
            }
            .community-cta-section h2 {
                font-size: 20px;
            }
            .cta-primary-btn {
                width: 100%;
                justify-content: center;
            }
        }