/* roulang page: index */
:root {
            --primary: #1B5B8F;
            --primary-dark: #15507E;
            --primary-light: #EBF2FA;
            --secondary: #2F9E73;
            --secondary-light: #E8F6F0;
            --text-dark: #1E293B;
            --text-body: #3E4C59;
            --text-muted: #52606D;
            --text-light: #94A3B8;
            --card-bg: #FFFFFF;
            --page-bg: #F6F9FC;
            --border: #E6EEF6;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 10px rgba(27,91,143,0.06);
            --shadow-md: 0 10px 24px rgba(27,91,143,0.12);
            --shadow-lg: 0 16px 40px rgba(27,91,143,0.14);
            --font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
            --transition: 0.22s ease;
            --nav-height: 68px;
            --nav-height-mobile: 56px;
        }

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

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

        body {
            font-family: var(--font-family);
            background-color: var(--page-bg);
            color: var(--text-body);
            line-height: 1.8;
            font-size: 16px;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        main {
            flex: 1 0 auto;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }

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

        button {
            font-family: var(--font-family);
            cursor: pointer;
        }

        input {
            font-family: var(--font-family);
        }

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

        @media (max-width: 640px) {
            .container-custom {
                padding: 0 20px;
            }
            body {
                font-size: 15px;
                line-height: 1.7;
            }
        }

        /* ========== Header / Navigation ========== */
        .site-header {
            background: #FFFFFF;
            position: sticky;
            top: 0;
            z-index: 100;
            height: var(--nav-height);
            display: flex;
            align-items: center;
            border-bottom: 1px solid var(--border);
            transition: box-shadow var(--transition);
        }

        .site-header.scrolled {
            box-shadow: 0 4px 16px rgba(27,91,143,0.1);
        }

        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            width: 100%;
        }

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

        .nav-logo-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: var(--primary);
            color: #FFFFFF;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 14px;
            letter-spacing: -0.5px;
        }

        .nav-logo-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-dark);
            letter-spacing: -0.3px;
        }

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

        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
        }

        .nav-links li a {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-muted);
            padding: 6px 0;
            position: relative;
            transition: color var(--transition);
        }

        .nav-links li a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--primary);
            transition: width var(--transition);
        }

        .nav-links li a:hover,
        .nav-links li a.active {
            color: var(--primary);
        }
        .nav-links li a:hover::after,
        .nav-links li a.active::after {
            width: 100%;
        }

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

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 22px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 600;
            border: none;
            line-height: 1.4;
            transition: all var(--transition);
            text-align: center;
        }

        .btn-primary {
            background: var(--primary);
            color: #FFFFFF;
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            color: #FFFFFF;
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(27,91,143,0.25);
        }
        .btn-primary:focus-visible {
            outline: 3px solid rgba(27,91,143,0.3);
            outline-offset: 2px;
        }
        .btn-primary:active {
            transform: scale(0.98);
        }

        .btn-secondary {
            background: #FFFFFF;
            color: var(--primary);
            border: 1.5px solid var(--primary);
        }
        .btn-secondary:hover {
            background: var(--primary-light);
            color: var(--primary-dark);
            transform: translateY(-2px);
        }
        .btn-secondary:focus-visible {
            outline: 3px solid rgba(27,91,143,0.3);
            outline-offset: 2px;
        }
        .btn-secondary:active {
            transform: scale(0.98);
        }

        .btn-green-outline {
            background: #FFFFFF;
            color: var(--secondary);
            border: 1.5px solid var(--secondary);
        }
        .btn-green-outline:hover {
            background: var(--secondary-light);
            color: var(--secondary);
            transform: translateY(-2px);
        }

        .btn-sm {
            padding: 8px 16px;
            font-size: 13px;
            border-radius: 6px;
        }

        @media (max-width: 1024px) {
            .nav-links {
                gap: 16px;
            }
            .nav-links li a {
                font-size: 14px;
            }
            .btn {
                padding: 10px 16px;
                font-size: 13px;
            }
        }

        @media (max-width: 768px) {
            .site-header {
                height: var(--nav-height-mobile);
            }
            .nav-links,
            .nav-actions {
                display: none;
            }
            .nav-wrapper {
                justify-content: space-between;
            }
        }

        /* Mobile menu */
        .hamburger-btn {
            display: none;
            background: none;
            border: none;
            font-size: 24px;
            color: var(--text-dark);
            padding: 8px;
            cursor: pointer;
            z-index: 101;
        }

        @media (max-width: 768px) {
            .hamburger-btn {
                display: flex;
                align-items: center;
                justify-content: center;
            }
        }

        .mobile-menu {
            display: none;
            position: fixed;
            top: var(--nav-height-mobile);
            left: 0;
            right: 0;
            background: #FFFFFF;
            border-bottom: 1px solid var(--border);
            z-index: 99;
            padding: 16px 20px 24px;
            box-shadow: 0 8px 24px rgba(27,91,143,0.1);
        }

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

        .mobile-menu ul {
            list-style: none;
            display: flex;
            flex-direction: column;
        }
        .mobile-menu ul li {
            border-bottom: 1px solid #F1F5F9;
        }
        .mobile-menu ul li a {
            display: block;
            padding: 14px 0;
            font-size: 16px;
            font-weight: 500;
            color: var(--text-muted);
        }
        .mobile-menu ul li a.active,
        .mobile-menu ul li a:hover {
            color: var(--primary);
        }
        .mobile-menu-actions {
            display: flex;
            flex-direction: column;
            gap: 10px;
            margin-top: 16px;
        }
        .mobile-menu-actions .btn {
            width: 100%;
            justify-content: center;
        }

        /* ========== Sections ========== */
        .section {
            padding: 80px 0;
        }

        @media (max-width: 640px) {
            .section {
                padding: 56px 0;
            }
        }

        .section-alt {
            background: #FFFFFF;
        }
        .section-tint {
            background: var(--primary-light);
        }
        .section-gray {
            background: #F0F5FA;
        }

        .section-header {
            max-width: 720px;
            margin-bottom: 48px;
        }
        .section-header.centered {
            margin-left: auto;
            margin-right: auto;
            text-align: center;
        }
        .section-header h2 {
            font-size: clamp(24px, 3.5vw, 34px);
            font-weight: 700;
            color: var(--text-dark);
            line-height: 1.3;
            margin-bottom: 16px;
        }
        .section-header p {
            font-size: 16px;
            color: var(--text-muted);
            line-height: 1.8;
        }

        /* ========== Hero ========== */
        .hero {
            background: linear-gradient(180deg, rgba(27,91,143,0.04) 0%, rgba(27,91,143,0.01) 60%, transparent 100%);
            padding: 64px 0 56px;
            position: relative;
            overflow: hidden;
        }

        .hero-bg-image {
            position: absolute;
            top: 0;
            right: 0;
            width: 52%;
            height: 100%;
            background-size: cover;
            background-position: center;
            opacity: 0.12;
            pointer-events: none;
        }

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

        .hero-grid {
            display: flex;
            align-items: center;
            gap: 48px;
        }

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

        .hero-content h1 {
            font-size: clamp(30px, 4.5vw, 46px);
            font-weight: 700;
            color: var(--text-dark);
            line-height: 1.25;
            margin-bottom: 20px;
            letter-spacing: -0.5px;
        }
        .hero-content h1 span {
            color: var(--primary);
        }

        .hero-content .hero-sub {
            font-size: 17px;
            color: var(--text-muted);
            line-height: 1.8;
            margin-bottom: 28px;
            max-width: 560px;
        }

        .hero-cta-group {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            margin-bottom: 24px;
        }

        .hero-trust-bar {
            display: flex;
            gap: 24px;
            flex-wrap: wrap;
            padding-top: 16px;
            border-top: 1px solid rgba(27,91,143,0.1);
        }
        .hero-trust-item {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-light);
            font-weight: 500;
        }
        .hero-trust-item i {
            color: var(--secondary);
            font-size: 14px;
        }

        .hero-visual {
            flex: 0 0 460px;
            max-width: 460px;
        }

        .hero-data-card {
            background: #FFFFFF;
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border);
        }

        .hero-data-card .match-item {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 0;
            border-bottom: 1px solid #F1F5F9;
        }
        .hero-data-card .match-item:last-child {
            border-bottom: none;
        }
        .hero-data-card .match-teams {
            font-weight: 600;
            color: var(--text-dark);
            font-size: 14px;
        }
        .hero-data-card .match-score {
            font-weight: 700;
            color: var(--primary);
            font-size: 16px;
            background: var(--primary-light);
            padding: 4px 12px;
            border-radius: 6px;
        }
        .hero-data-card .match-time {
            font-size: 12px;
            color: var(--text-light);
        }
        .hero-data-card-label {
            font-size: 13px;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .hero-data-card-label i {
            color: var(--secondary);
        }

        @media (max-width: 1024px) {
            .hero-grid {
                gap: 32px;
            }
            .hero-visual {
                flex: 0 0 340px;
                max-width: 340px;
            }
        }

        @media (max-width: 768px) {
            .hero {
                padding: 40px 0 48px;
            }
            .hero-bg-image {
                width: 100%;
                height: 100%;
                opacity: 0.06;
            }
            .hero-grid {
                flex-direction: column;
                gap: 32px;
            }
            .hero-visual {
                flex: 1 1 auto;
                max-width: 100%;
                width: 100%;
            }
            .hero-content h1 {
                font-size: clamp(26px, 7vw, 34px);
            }
            .hero-trust-bar {
                gap: 16px;
                flex-wrap: wrap;
            }
        }

        /* ========== Cards ========== */
        .card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 24px;
            transition: all var(--transition);
            height: 100%;
        }
        .card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: rgba(27,91,143,0.4);
        }

        .card-icon {
            width: 48px;
            height: 48px;
            border-radius: 10px;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            margin-bottom: 16px;
        }
        .card-icon.green {
            background: var(--secondary-light);
            color: var(--secondary);
        }

        .card h3 {
            font-size: clamp(17px, 2.5vw, 20px);
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 10px;
            line-height: 1.4;
        }
        .card p {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.75;
        }

        /* ========== Grid layout ========== */
        .grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .grid-4 {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .grid-5 {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 20px;
        }

        @media (max-width: 1024px) {
            .grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }
            .grid-5 {
                grid-template-columns: repeat(3, 1fr);
            }
        }
        @media (max-width: 640px) {
            .grid-2,
            .grid-3,
            .grid-4,
            .grid-5 {
                grid-template-columns: 1fr;
                gap: 16px;
            }
        }

        /* ========== Steps ========== */
        .steps-container {
            display: flex;
            gap: 24px;
            align-items: flex-start;
            flex-wrap: wrap;
        }
        .step-item {
            flex: 1 1 220px;
            text-align: center;
            position: relative;
            padding: 0 8px;
        }
        .step-item:not(:last-child)::after {
            content: '';
            position: absolute;
            top: 24px;
            left: calc(50% + 40px);
            width: calc(100% - 80px);
            height: 2px;
            background: dashed #CBD5E1;
            background-image: linear-gradient(to right, #CBD5E1 50%, transparent 50%);
            background-size: 8px 2px;
            background-repeat: repeat-x;
        }
        .step-number {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary);
            color: #FFFFFF;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 700;
            margin: 0 auto 16px;
        }
        .step-item h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 8px;
        }
        .step-item p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        @media (max-width: 640px) {
            .steps-container {
                flex-direction: column;
                gap: 32px;
            }
            .step-item:not(:last-child)::after {
                display: none;
            }
        }

        /* ========== Stats ========== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .stat-block {
            text-align: center;
            padding: 28px 16px;
            background: #FFFFFF;
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
        }
        .stat-number {
            font-size: 42px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.1;
            margin-bottom: 8px;
            letter-spacing: -1px;
        }
        .stat-label {
            font-size: 14px;
            color: var(--text-muted);
            font-weight: 500;
        }
        .stat-note {
            font-size: 12px;
            color: var(--text-light);
            margin-top: 6px;
        }

        @media (max-width: 1024px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 640px) {
            .stats-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .stat-number {
                font-size: 32px;
            }
        }

        /* ========== Testimonials ========== */
        .testimonial-card {
            background: #FFFFFF;
            border-radius: var(--radius-md);
            padding: 24px;
            border: 1px solid var(--border);
            border-left: 4px solid var(--secondary);
            box-shadow: var(--shadow-sm);
            height: 100%;
            transition: all var(--transition);
        }
        .testimonial-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .testimonial-avatar {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 16px;
            margin-bottom: 12px;
        }
        .testimonial-name {
            font-weight: 600;
            color: var(--text-dark);
            font-size: 15px;
            margin-bottom: 2px;
        }
        .testimonial-role {
            font-size: 13px;
            color: var(--text-light);
            margin-bottom: 10px;
        }
        .testimonial-text {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.75;
        }

        /* ========== News list ========== */
        .news-list {
            display: flex;
            flex-direction: column;
        }
        .news-item {
            display: flex;
            gap: 16px;
            padding: 20px 0;
            border-bottom: 1px solid var(--border);
            align-items: flex-start;
        }
        .news-item:last-child {
            border-bottom: none;
        }
        .news-date {
            flex: 0 0 100px;
            font-size: 13px;
            color: var(--text-light);
            padding-top: 4px;
            font-weight: 500;
        }
        .news-content {
            flex: 1;
        }
        .news-content h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 6px;
            line-height: 1.45;
        }
        .news-content p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.75;
            margin-bottom: 10px;
        }
        .news-read-more {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            padding: 6px 14px;
            border: 1.5px solid var(--primary);
            border-radius: 6px;
            transition: all var(--transition);
        }
        .news-read-more:hover {
            background: var(--primary);
            color: #FFFFFF;
        }
        .news-read-more i {
            font-size: 11px;
        }

        @media (max-width: 640px) {
            .news-item {
                flex-direction: column;
                gap: 8px;
            }
            .news-date {
                flex: 0 0 auto;
            }
        }

        /* ========== Data table ========== */
        .data-tabs {
            display: flex;
            gap: 8px;
            margin-bottom: 24px;
            flex-wrap: wrap;
        }
        .data-tab {
            padding: 10px 20px;
            font-size: 14px;
            font-weight: 600;
            color: var(--text-muted);
            background: #FFFFFF;
            border: 1px solid var(--border);
            border-radius: 6px;
            cursor: pointer;
            transition: all var(--transition);
            white-space: nowrap;
        }
        .data-tab:hover {
            border-color: var(--primary);
            color: var(--primary);
        }
        .data-tab.active {
            background: var(--primary);
            color: #FFFFFF;
            border-color: var(--primary);
        }

        .rank-table {
            width: 100%;
            border-collapse: collapse;
            background: #FFFFFF;
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
        }
        .rank-table th {
            background: var(--primary-light);
            color: var(--text-dark);
            font-weight: 600;
            font-size: 13px;
            padding: 14px 16px;
            text-align: left;
            white-space: nowrap;
        }
        .rank-table td {
            padding: 12px 16px;
            font-size: 14px;
            color: var(--text-muted);
            border-bottom: 1px solid #F1F5F9;
            white-space: nowrap;
        }
        .rank-table tr:last-child td {
            border-bottom: none;
        }
        .rank-table tr:hover td {
            background: #FAFCFE;
        }
        .rank-table .team-name {
            font-weight: 600;
            color: var(--text-dark);
        }

        @media (max-width: 640px) {
            .rank-table {
                display: block;
                overflow-x: auto;
                -webkit-overflow-scrolling: touch;
            }
        }

        /* ========== Partners ========== */
        .partners-grid {
            display: grid;
            grid-template-columns: repeat(6, 1fr);
            gap: 16px;
        }
        .partner-logo {
            background: #FFFFFF;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            height: 64px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            color: var(--text-light);
            font-weight: 500;
            transition: all var(--transition);
            text-align: center;
            padding: 8px;
        }
        .partner-logo:hover {
            border-color: var(--primary);
            box-shadow: 0 4px 12px rgba(27,91,143,0.1);
            color: var(--primary);
        }

        @media (max-width: 1024px) {
            .partners-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }
        @media (max-width: 640px) {
            .partners-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 10px;
            }
        }

        /* ========== FAQ ========== */
        .faq-container {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            border-bottom: 1px solid var(--border);
            background: #FFFFFF;
            border-radius: var(--radius-sm);
            margin-bottom: 12px;
            border: 1px solid var(--border);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 16px 20px;
            background: none;
            border: none;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-dark);
            text-align: left;
            cursor: pointer;
            gap: 16px;
        }
        .faq-question i {
            color: var(--text-light);
            transition: transform var(--transition);
            flex-shrink: 0;
        }
        .faq-question.open i {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-answer {
            display: none;
            padding: 0 20px 16px;
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.75;
        }
        .faq-answer.open {
            display: block;
        }

        /* ========== CTA Section ========== */
        .cta-section {
            background: linear-gradient(180deg, rgba(27,91,143,0.04) 0%, rgba(47,158,115,0.03) 100%);
            padding: 72px 0;
            text-align: center;
        }
        .cta-section h2 {
            font-size: clamp(26px, 3.5vw, 34px);
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 14px;
        }
        .cta-section p {
            font-size: 16px;
            color: var(--text-muted);
            margin-bottom: 28px;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
        }
        .cta-actions {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* ========== Brand intro ========== */
        .brand-intro {
            display: flex;
            gap: 32px;
            align-items: center;
        }
        .brand-intro-text {
            flex: 1;
        }
        .brand-intro-text h2 {
            font-size: clamp(24px, 3.5vw, 30px);
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 16px;
        }
        .brand-intro-text p {
            font-size: 16px;
            color: var(--text-muted);
            line-height: 1.85;
            margin-bottom: 12px;
        }
        .brand-intro-image {
            flex: 0 0 400px;
            max-width: 400px;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border);
        }
        .brand-intro-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        @media (max-width: 768px) {
            .brand-intro {
                flex-direction: column;
            }
            .brand-intro-image {
                flex: 0 0 auto;
                max-width: 100%;
                width: 100%;
                order: -1;
                max-height: 240px;
            }
        }

        /* ========== Solution wide card ========== */
        .solution-wide {
            background: #FFFFFF;
            border-radius: var(--radius-lg);
            padding: 40px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            display: flex;
            gap: 32px;
            align-items: center;
        }
        .solution-wide-text {
            flex: 1;
        }
        .solution-wide-text h3 {
            font-size: clamp(20px, 3vw, 26px);
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 12px;
        }
        .solution-wide-text p {
            font-size: 16px;
            color: var(--text-muted);
            line-height: 1.8;
            margin-bottom: 20px;
        }
        .solution-wide-visual {
            flex: 0 0 280px;
            max-width: 280px;
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border);
        }
        .solution-wide-visual img {
            width: 100%;
            height: 180px;
            object-fit: cover;
        }

        @media (max-width: 768px) {
            .solution-wide {
                flex-direction: column;
                padding: 24px;
            }
            .solution-wide-visual {
                flex: 0 0 auto;
                max-width: 100%;
                width: 100%;
            }
        }

        /* ========== Audience cards ========== */
        .audience-card {
            background: #FFFFFF;
            border-radius: var(--radius-md);
            padding: 24px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            text-align: center;
            height: 100%;
            transition: all var(--transition);
        }
        .audience-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .audience-card .audience-icon {
            width: 52px;
            height: 52px;
            border-radius: 12px;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            margin: 0 auto 14px;
        }
        .audience-card h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 8px;
        }
        .audience-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* ========== Footer ========== */
        .site-footer {
            background: #FFFFFF;
            border-top: 1px solid var(--border);
            padding: 48px 0 24px;
            flex-shrink: 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.75;
            margin-top: 12px;
            max-width: 320px;
        }
        .footer-brand .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 18px;
            font-weight: 700;
            color: var(--text-dark);
        }
        .footer-brand .footer-logo .nav-logo-icon {
            width: 32px;
            height: 32px;
            font-size: 12px;
            border-radius: 8px;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 16px;
        }
        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-col ul li a {
            font-size: 14px;
            color: var(--text-muted);
            transition: color var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--primary);
        }
        .footer-bottom {
            border-top: 1px solid var(--border);
            padding-top: 20px;
            text-align: center;
            font-size: 13px;
            color: var(--text-light);
        }
        .footer-bottom a {
            color: var(--text-muted);
        }
        .footer-bottom a:hover {
            color: var(--primary);
        }
        .footer-top-links {
            margin-bottom: 24px;
            padding-bottom: 16px;
            border-bottom: 1px solid var(--border);
            display: flex;
            gap: 20px;
            flex-wrap: wrap;
            font-size: 14px;
        }
        .footer-top-links a {
            color: var(--text-muted);
            font-weight: 500;
        }
        .footer-top-links a:hover {
            color: var(--primary);
        }
        .footer-top-links span {
            color: var(--text-light);
        }

        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }
        @media (max-width: 640px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .site-footer {
                padding: 32px 0 16px;
            }
        }

        /* ========== Utility ========== */
        .text-center {
            text-align: center;
        }
        .mt-0 {
            margin-top: 0;
        }
        .mb-0 {
            margin-bottom: 0;
        }
        .gap-16 {
            gap: 16px;
        }
        .gap-24 {
            gap: 24px;
        }
        .flex-wrap {
            flex-wrap: wrap;
        }
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0,0,0,0);
            white-space: nowrap;
            border: 0;
        }

        /* ========== Sports badge ========== */
        .sport-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 14px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            border-radius: 20px;
            margin-bottom: 16px;
        }
        .sport-badge.green {
            background: var(--secondary-light);
            color: var(--secondary);
        }

        /* ========== Responsive nav fixes ========== */
        @media (max-width: 768px) {
            .hide-mobile {
                display: none !important;
            }
        }
        @media (min-width: 769px) {
            .show-mobile {
                display: none !important;
            }
        }

/* roulang page: category3 */
:root {
            --primary: #1B5B8F;
            --primary-dark: #15507E;
            --primary-light: #EBF2FA;
            --secondary: #2F9E73;
            --secondary-light: #E8F6F0;
            --text-dark: #1E293B;
            --text-body: #3E4C59;
            --text-muted: #52606D;
            --text-light: #94A3B8;
            --card-bg: #FFFFFF;
            --page-bg: #F6F9FC;
            --border: #E6EEF6;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 10px rgba(27,91,143,0.06);
            --shadow-md: 0 10px 24px rgba(27,91,143,0.12);
            --shadow-lg: 0 16px 40px rgba(27,91,143,0.14);
            --font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
            --transition: 0.22s ease;
            --nav-height: 68px;
            --nav-height-mobile: 56px;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--font-family);
            background-color: var(--page-bg);
            color: var(--text-body);
            line-height: 1.8;
            font-size: 16px;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            margin: 0;
        }
        main {
            flex: 1 0 auto;
            display: block;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button {
            font-family: var(--font-family);
            cursor: pointer;
        }
        input {
            font-family: var(--font-family);
        }
        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 640px) {
            .container-custom {
                padding: 0 20px;
            }
            body {
                font-size: 15px;
                line-height: 1.7;
            }
        }
        /* ========== Header / Navigation ========== */
        .site-header {
            background: #FFFFFF;
            position: sticky;
            top: 0;
            z-index: 100;
            height: var(--nav-height);
            display: flex;
            align-items: center;
            border-bottom: 1px solid var(--border);
            transition: box-shadow var(--transition);
        }
        .site-header.scrolled {
            box-shadow: 0 4px 16px rgba(27,91,143,0.1);
        }
        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            width: 100%;
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .nav-logo-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: var(--primary);
            color: #FFFFFF;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 14px;
            letter-spacing: -0.5px;
        }
        .nav-logo-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-dark);
            letter-spacing: -0.3px;
        }
        .nav-logo-text span {
            color: var(--primary);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-links li a {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-muted);
            padding: 6px 0;
            position: relative;
            transition: color var(--transition);
            white-space: nowrap;
        }
        .nav-links li a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--primary);
            transition: width var(--transition);
        }
        .nav-links li a:hover,
        .nav-links li a.active {
            color: var(--primary);
        }
        .nav-links li a:hover::after,
        .nav-links li a.active::after {
            width: 100%;
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 22px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 600;
            border: none;
            line-height: 1.4;
            transition: all var(--transition);
            text-align: center;
            cursor: pointer;
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--primary);
            color: #FFFFFF;
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            color: #FFFFFF;
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(27,91,143,0.25);
        }
        .btn-primary:focus-visible {
            outline: 3px solid rgba(27,91,143,0.3);
            outline-offset: 2px;
        }
        .btn-primary:active {
            transform: scale(0.98);
        }
        .btn-secondary {
            background: #FFFFFF;
            color: var(--primary);
            border: 1.5px solid var(--primary);
        }
        .btn-secondary:hover {
            background: var(--primary-light);
            color: var(--primary-dark);
            transform: translateY(-2px);
        }
        .btn-secondary:focus-visible {
            outline: 3px solid rgba(27,91,143,0.3);
            outline-offset: 2px;
        }
        .btn-secondary:active {
            transform: scale(0.98);
        }
        .btn-green-outline {
            background: #FFFFFF;
            color: var(--secondary);
            border: 1.5px solid var(--secondary);
        }
        .btn-green-outline:hover {
            background: var(--secondary-light);
            color: var(--secondary);
            transform: translateY(-2px);
        }
        .btn-sm {
            padding: 8px 16px;
            font-size: 13px;
            border-radius: 6px;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 24px;
            color: var(--text-dark);
            padding: 4px;
            line-height: 1;
        }
        @media (max-width: 1024px) {
            .nav-links {
                gap: 18px;
            }
            .nav-actions .btn {
                padding: 10px 16px;
                font-size: 14px;
            }
        }
        @media (max-width: 768px) {
            .site-header {
                height: var(--nav-height-mobile);
            }
            .nav-toggle {
                display: block;
                order: 3;
            }
            .nav-wrapper {
                flex-wrap: wrap;
                gap: 0;
            }
            .nav-logo {
                order: 1;
            }
            .nav-actions {
                order: 2;
                margin-left: auto;
            }
            .nav-actions .btn {
                display: none;
            }
            .nav-links {
                display: none;
                position: absolute;
                top: var(--nav-height-mobile);
                left: 0;
                right: 0;
                background: #FFFFFF;
                flex-direction: column;
                gap: 0;
                padding: 8px 20px 16px;
                border-bottom: 1px solid var(--border);
                box-shadow: 0 8px 20px rgba(27,91,143,0.08);
                z-index: 99;
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links li a {
                display: block;
                padding: 12px 0;
                border-bottom: 1px solid #F1F5F9;
                font-size: 16px;
            }
            .nav-links li:last-child a {
                border-bottom: none;
            }
            .nav-links li a::after {
                display: none;
            }
            .mobile-actions {
                display: none;
                padding: 12px 20px;
                background: #FFFFFF;
                border-bottom: 1px solid var(--border);
                position: absolute;
                top: var(--nav-height-mobile);
                left: 0;
                right: 0;
                z-index: 99;
                flex-direction: column;
                gap: 8px;
            }
            .mobile-actions.open {
                display: flex;
            }
            .mobile-actions .btn {
                display: block;
                width: 100%;
            }
        }
        /* ========== Breadcrumb ========== */
        .breadcrumb-section {
            padding: 24px 0 0;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-light);
            flex-wrap: wrap;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .breadcrumb li {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .breadcrumb a {
            color: var(--text-muted);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb .separator {
            color: var(--text-light);
        }
        .breadcrumb .current {
            color: var(--primary);
            font-weight: 500;
        }
        /* ========== Category H1 ========== */
        .category-hero {
            padding: 40px 0 32px;
            background: linear-gradient(180deg, rgba(27,91,143,0.04) 0%, transparent 100%);
        }
        .category-hero h1 {
            font-size: clamp(30px, 4.5vw, 44px);
            font-weight: 700;
            color: var(--text-dark);
            line-height: 1.25;
            margin: 0 0 8px;
            letter-spacing: -0.5px;
        }
        .category-hero h1 .highlight {
            color: var(--primary);
            position: relative;
        }
        .category-hero h1 .highlight::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 0;
            width: 60%;
            height: 3px;
            background: var(--secondary);
            border-radius: 2px;
        }
        .category-hero .lead {
            font-size: 16px;
            color: var(--text-muted);
            max-width: 800px;
            line-height: 1.9;
            margin: 16px 0 0;
        }
        /* ========== Section Common ========== */
        .section {
            padding: 56px 0;
        }
        .section-title {
            font-size: clamp(22px, 3vw, 30px);
            font-weight: 700;
            color: var(--text-dark);
            line-height: 1.3;
            margin: 0 0 8px;
            letter-spacing: -0.3px;
        }
        .section-subtitle {
            font-size: 15px;
            color: var(--text-muted);
            margin: 0 0 32px;
            max-width: 680px;
        }
        /* ========== Team Cards Grid ========== */
        .team-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .team-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }
        .team-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: rgba(27,91,143,0.4);
        }
        .team-card.featured {
            grid-column: span 2;
            display: grid;
            grid-template-columns: 1fr 1fr;
        }
        .team-card-image {
            height: 180px;
            overflow: hidden;
            position: relative;
            background: #EAF1F8;
        }
        .team-card.featured .team-card-image {
            height: 100%;
            min-height: 240px;
        }
        .team-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .team-card-body {
            padding: 20px 20px 18px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .team-card.featured .team-card-body {
            padding: 28px;
        }
        .team-card-date {
            font-size: 13px;
            color: var(--text-light);
            display: block;
            margin-bottom: 8px;
        }
        .team-card-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-dark);
            margin: 0 0 10px;
            line-height: 1.4;
        }
        .team-card.featured .team-card-title {
            font-size: 22px;
        }
        .team-card-excerpt {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.75;
            margin: 0 0 16px;
            flex: 1;
        }
        .team-card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
        }
        .team-card-tag {
            font-size: 12px;
            color: var(--secondary);
            background: var(--secondary-light);
            padding: 4px 10px;
            border-radius: 20px;
            font-weight: 500;
        }
        .team-card .btn-sm {
            flex-shrink: 0;
        }
        @media (max-width: 1024px) {
            .team-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .team-card.featured {
                grid-column: span 2;
            }
        }
        @media (max-width: 640px) {
            .team-grid {
                grid-template-columns: 1fr;
            }
            .team-card.featured {
                grid-column: span 1;
                display: flex;
                flex-direction: column;
            }
            .team-card.featured .team-card-image {
                height: 180px;
                min-height: auto;
            }
        }
        /* ========== Filter Toolbar ========== */
        .filter-toolbar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 16px 20px;
            box-shadow: var(--shadow-sm);
            flex-wrap: wrap;
        }
        .filter-tags {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
        }
        .filter-tag {
            font-size: 13px;
            color: var(--text-muted);
            background: #FFFFFF;
            border: 1px solid var(--border);
            padding: 6px 14px;
            border-radius: 20px;
            cursor: pointer;
            transition: all var(--transition);
            white-space: nowrap;
        }
        .filter-tag:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-light);
        }
        .filter-tag.active {
            background: var(--primary);
            color: #FFFFFF;
            border-color: var(--primary);
        }
        .filter-sort {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-muted);
        }
        .filter-sort .btn {
            padding: 8px 16px;
            font-size: 13px;
        }
        /* ========== Data Highlight Cards ========== */
        .data-highlight-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .data-highlight-card {
            background: var(--primary-light);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 24px;
            text-align: center;
            transition: all var(--transition);
        }
        .data-highlight-card:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-sm);
        }
        .data-highlight-number {
            font-size: 32px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 6px;
        }
        .data-highlight-label {
            font-size: 14px;
            color: var(--text-muted);
            margin: 0;
        }
        @media (max-width: 640px) {
            .data-highlight-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
        }
        /* ========== Related Reading ========== */
        .related-reading-list {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .related-reading-item {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 20px;
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .related-reading-item:hover {
            border-color: rgba(27,91,143,0.3);
            box-shadow: var(--shadow-sm);
        }
        .related-reading-item .rr-date {
            font-size: 12px;
            color: var(--text-light);
        }
        .related-reading-item .rr-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-dark);
            line-height: 1.5;
            margin: 0;
        }
        .related-reading-item .rr-excerpt {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.7;
            margin: 0;
            flex: 1;
        }
        .related-reading-item a {
            font-size: 13px;
            font-weight: 500;
        }
        @media (max-width: 768px) {
            .related-reading-list {
                grid-template-columns: 1fr;
            }
        }
        /* ========== CTA Section ========== */
        .cta-section {
            background: linear-gradient(180deg, rgba(27,91,143,0.04) 0%, transparent 100%);
            padding: 64px 0;
        }
        .cta-box {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 40px 32px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 16px;
        }
        .cta-box h2 {
            font-size: clamp(22px, 3vw, 30px);
            font-weight: 700;
            color: var(--text-dark);
            margin: 0;
        }
        .cta-box p {
            font-size: 16px;
            color: var(--text-muted);
            margin: 0;
            max-width: 520px;
        }
        .cta-box .cta-actions {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            justify-content: center;
        }
        @media (max-width: 640px) {
            .cta-box {
                padding: 28px 20px;
            }
            .cta-actions .btn {
                width: 100%;
            }
        }
        /* ========== FAQ ========== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }
        .faq-item {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(27,91,143,0.25);
        }
        .faq-item details {
            display: block;
        }
        .faq-item summary {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 16px 20px;
            cursor: pointer;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-dark);
            list-style: none;
            position: relative;
            transition: color var(--transition);
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary:hover {
            color: var(--primary);
        }
        .faq-item summary .faq-icon {
            color: var(--text-light);
            font-size: 14px;
            transition: transform var(--transition);
            flex-shrink: 0;
            margin-left: 12px;
        }
        .faq-item details[open] summary .faq-icon {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-item details[open] summary {
            color: var(--primary);
            border-bottom: 1px solid var(--border);
        }
        .faq-answer {
            padding: 16px 20px;
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.75;
            background: #FBFDFF;
        }
        .faq-answer p {
            margin: 0;
        }
        /* ========== Footer ========== */
        .site-footer {
            background: #FFFFFF;
            border-top: 1px solid var(--border);
            padding: 48px 0 24px;
            margin-top: 0;
            flex-shrink: 0;
        }
        .footer-top-links {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            padding-bottom: 20px;
            border-bottom: 1px solid var(--border);
            margin-bottom: 28px;
            flex-wrap: wrap;
        }
        .footer-top-links a {
            color: var(--text-muted);
            font-weight: 500;
        }
        .footer-top-links a:hover {
            color: var(--primary);
        }
        .footer-top-links span {
            color: var(--text-light);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 28px;
        }
        .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 12px;
        }
        .footer-logo .nav-logo-icon {
            width: 36px;
            height: 36px;
            font-size: 13px;
        }
        .footer-logo span {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-dark);
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.8;
            margin: 0 0 16px;
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-dark);
            margin: 0 0 14px;
            letter-spacing: -0.2px;
        }
        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-col ul li a {
            font-size: 14px;
            color: var(--text-muted);
            transition: color var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--primary);
        }
        .footer-bottom {
            border-top: 1px solid var(--border);
            padding-top: 20px;
            font-size: 13px;
            color: var(--text-light);
            text-align: center;
        }
        .footer-bottom a {
            color: var(--text-muted);
        }
        .footer-bottom a:hover {
            color: var(--primary);
        }
        @media (max-width: 900px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 640px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .site-footer {
                padding: 32px 0 20px;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #1B5B8F;
            --primary-dark: #15507E;
            --primary-light: #EBF2FA;
            --secondary: #2F9E73;
            --secondary-light: #E8F6F0;
            --text-dark: #1E293B;
            --text-body: #3E4C59;
            --text-muted: #52606D;
            --text-light: #94A3B8;
            --card-bg: #FFFFFF;
            --page-bg: #F6F9FC;
            --border: #E6EEF6;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 10px rgba(27,91,143,0.06);
            --shadow-md: 0 10px 24px rgba(27,91,143,0.12);
            --shadow-lg: 0 16px 40px rgba(27,91,143,0.14);
            --font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
            --transition: 0.22s ease;
            --nav-height: 68px;
            --nav-height-mobile: 56px;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--font-family);
            background-color: var(--page-bg);
            color: var(--text-body);
            line-height: 1.8;
            font-size: 16px;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            margin: 0;
            padding: 0;
        }
        main {
            flex: 1 0 auto;
            display: block;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button {
            font-family: var(--font-family);
            cursor: pointer;
        }
        input {
            font-family: var(--font-family);
        }
        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 640px) {
            .container-custom {
                padding: 0 20px;
            }
            body {
                font-size: 15px;
                line-height: 1.7;
            }
        }

        /* ========== Header / Navigation ========== */
        .site-header {
            background: #FFFFFF;
            position: sticky;
            top: 0;
            z-index: 100;
            height: var(--nav-height);
            display: flex;
            align-items: center;
            border-bottom: 1px solid var(--border);
            transition: box-shadow var(--transition);
        }
        .site-header.scrolled {
            box-shadow: 0 4px 16px rgba(27,91,143,0.1);
        }
        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            width: 100%;
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .nav-logo-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: var(--primary);
            color: #FFFFFF;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 14px;
            letter-spacing: -0.5px;
        }
        .nav-logo-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-dark);
            letter-spacing: -0.3px;
        }
        .nav-logo-text span {
            color: var(--primary);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-links li a {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-muted);
            padding: 6px 0;
            position: relative;
            transition: color var(--transition);
        }
        .nav-links li a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--primary);
            transition: width var(--transition);
        }
        .nav-links li a:hover,
        .nav-links li a.active {
            color: var(--primary);
        }
        .nav-links li a:hover::after,
        .nav-links li a.active::after {
            width: 100%;
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 22px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 600;
            border: none;
            line-height: 1.4;
            transition: all var(--transition);
            text-align: center;
            text-decoration: none;
            cursor: pointer;
        }
        .btn-primary {
            background: var(--primary);
            color: #FFFFFF;
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            color: #FFFFFF;
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(27,91,143,0.25);
        }
        .btn-primary:focus-visible {
            outline: 3px solid rgba(27,91,143,0.3);
            outline-offset: 2px;
        }
        .btn-primary:active {
            transform: scale(0.98);
        }
        .btn-secondary {
            background: #FFFFFF;
            color: var(--primary);
            border: 1.5px solid var(--primary);
        }
        .btn-secondary:hover {
            background: var(--primary-light);
            color: var(--primary-dark);
            transform: translateY(-2px);
        }
        .btn-secondary:focus-visible {
            outline: 3px solid rgba(27,91,143,0.3);
            outline-offset: 2px;
        }
        .btn-secondary:active {
            transform: scale(0.98);
        }
        .btn-green-outline {
            background: #FFFFFF;
            color: var(--secondary);
            border: 1.5px solid var(--secondary);
        }
        .btn-green-outline:hover {
            background: var(--secondary-light);
            color: var(--secondary);
            transform: translateY(-2px);
        }
        .btn-sm {
            padding: 8px 16px;
            font-size: 13px;
        }
        .nav-hamburger {
            display: none;
            background: none;
            border: none;
            font-size: 22px;
            color: var(--text-dark);
            padding: 4px;
            line-height: 1;
        }
        @media (max-width: 1024px) {
            .nav-links {
                gap: 16px;
            }
            .nav-links li a {
                font-size: 14px;
            }
            .nav-actions .btn {
                padding: 10px 16px;
                font-size: 13px;
            }
        }
        @media (max-width: 768px) {
            .site-header {
                height: var(--nav-height-mobile);
            }
            .nav-wrapper {
                gap: 12px;
            }
            .nav-hamburger {
                display: block;
            }
            .nav-links {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: #FFFFFF;
                flex-direction: column;
                gap: 0;
                padding: 16px 20px;
                border-bottom: 1px solid var(--border);
                box-shadow: 0 8px 24px rgba(27,91,143,0.1);
                z-index: 99;
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links li {
                width: 100%;
            }
            .nav-links li a {
                display: block;
                padding: 12px 0;
                font-size: 16px;
                border-bottom: 1px solid #F1F5F9;
            }
            .nav-links li:last-child a {
                border-bottom: none;
            }
            .nav-links li a::after {
                display: none;
            }
            .nav-actions {
                gap: 8px;
            }
            .nav-actions .btn {
                padding: 8px 14px;
                font-size: 13px;
            }
        }

        /* ========== Breadcrumb ========== */
        .breadcrumb-section {
            background: #FFFFFF;
            border-bottom: 1px solid var(--border);
            padding: 14px 0;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-light);
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--text-muted);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb .separator {
            color: #CBD5E1;
            font-size: 12px;
        }
        .breadcrumb .current {
            color: var(--primary);
            font-weight: 500;
        }

        /* ========== Category Header ========== */
        .category-header {
            background: linear-gradient(180deg, rgba(27,91,143,0.04) 0%, transparent 100%);
            padding: 56px 0 40px;
        }
        .category-header h1 {
            font-size: clamp(30px, 4.5vw, 44px);
            font-weight: 700;
            color: var(--text-dark);
            line-height: 1.25;
            margin: 0 0 8px 0;
            position: relative;
            display: inline-block;
        }
        .category-header h1::after {
            content: '';
            position: absolute;
            bottom: -6px;
            left: 0;
            width: 60px;
            height: 3px;
            background: var(--primary);
            border-radius: 2px;
        }
        .category-header .category-subtitle {
            font-size: 16px;
            color: var(--text-muted);
            max-width: 720px;
            margin-top: 18px;
            line-height: 1.8;
        }

        /* ========== Article List ========== */
        .article-list-section {
            padding: 48px 0 32px;
        }
        .article-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .article-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }
        .article-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: rgba(27,91,143,0.4);
        }
        .article-card.featured {
            grid-column: span 2;
            display: grid;
            grid-template-columns: 1fr 1.2fr;
        }
        .article-card.featured .article-thumb {
            height: 100%;
            min-height: 260px;
        }
        .article-thumb {
            background: #EAF1F8;
            position: relative;
            overflow: hidden;
            aspect-ratio: 16/9;
        }
        .article-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .article-card:hover .article-thumb img {
            transform: scale(1.03);
        }
        .article-thumb .thumb-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--primary);
            color: #FFFFFF;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 20px;
            z-index: 2;
        }
        .article-body {
            padding: 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .article-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: var(--text-light);
            margin-bottom: 8px;
        }
        .article-meta .date-badge {
            background: #F1F5F9;
            color: var(--text-muted);
            padding: 4px 10px;
            border-radius: 20px;
            font-size: 12px;
        }
        .article-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-dark);
            line-height: 1.4;
            margin: 0 0 10px 0;
        }
        .article-title a {
            color: var(--text-dark);
        }
        .article-title a:hover {
            color: var(--primary);
        }
        .article-summary {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.7;
            margin: 0 0 16px 0;
            flex: 1;
        }
        .article-readmore {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            background: #FFFFFF;
            border: 1.5px solid var(--primary);
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            transition: all var(--transition);
            align-self: flex-start;
        }
        .article-readmore:hover {
            background: var(--primary);
            color: #FFFFFF;
            transform: translateY(-2px);
        }
        .article-readmore i {
            font-size: 12px;
        }
        @media (max-width: 768px) {
            .article-list {
                grid-template-columns: 1fr;
            }
            .article-card.featured {
                grid-column: span 1;
                grid-template-columns: 1fr;
            }
            .article-card.featured .article-thumb {
                min-height: 200px;
                aspect-ratio: 16/9;
            }
            .article-title {
                font-size: 16px;
            }
        }

        /* ========== Filter Toolbar ========== */
        .filter-toolbar-section {
            padding: 20px 0 32px;
        }
        .filter-toolbar {
            background: #FFFFFF;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 16px 20px;
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
            box-shadow: var(--shadow-sm);
        }
        .filter-label {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-dark);
            margin-right: 4px;
        }
        .filter-tag {
            display: inline-flex;
            align-items: center;
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 500;
            color: var(--text-muted);
            background: #FFFFFF;
            border: 1px solid #D1DCE8;
            cursor: pointer;
            transition: all var(--transition);
            white-space: nowrap;
        }
        .filter-tag:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-light);
        }
        .filter-tag.active {
            background: var(--primary);
            color: #FFFFFF;
            border-color: var(--primary);
        }
        .filter-sort-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            background: #FFFFFF;
            border: 1.5px solid var(--primary);
            cursor: pointer;
            transition: all var(--transition);
            margin-left: auto;
        }
        .filter-sort-btn:hover {
            background: var(--primary);
            color: #FFFFFF;
        }

        /* ========== Support Stats ========== */
        .support-stats-section {
            padding: 40px 0;
        }
        .support-stats-section .section-title {
            font-size: clamp(22px, 3vw, 28px);
            font-weight: 700;
            color: var(--text-dark);
            margin: 0 0 24px 0;
        }
        .support-stats-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .support-stat-card {
            background: var(--primary-light);
            border-radius: var(--radius-md);
            padding: 24px 20px;
            text-align: center;
            transition: all var(--transition);
        }
        .support-stat-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .support-stat-number {
            font-size: 36px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 6px;
        }
        .support-stat-label {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 4px;
        }
        .support-stat-desc {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
        }
        @media (max-width: 768px) {
            .support-stats-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ========== Related Reading ========== */
        .related-reading-section {
            padding: 40px 0;
        }
        .related-reading-section .section-title {
            font-size: clamp(22px, 3vw, 28px);
            font-weight: 700;
            color: var(--text-dark);
            margin: 0 0 24px 0;
        }
        .related-list {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .related-item {
            background: #FFFFFF;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 18px;
            transition: all var(--transition);
        }
        .related-item:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-sm);
            border-color: rgba(27,91,143,0.3);
        }
        .related-item-title {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-dark);
            line-height: 1.4;
            margin: 0 0 8px 0;
        }
        .related-item-title a {
            color: var(--text-dark);
        }
        .related-item-title a:hover {
            color: var(--primary);
        }
        .related-item-meta {
            font-size: 12px;
            color: var(--text-light);
        }
        @media (max-width: 768px) {
            .related-list {
                grid-template-columns: 1fr;
            }
        }

        /* ========== Bottom CTA ========== */
        .bottom-cta-section {
            padding: 56px 0 64px;
        }
        .bottom-cta {
            background: linear-gradient(180deg, rgba(27,91,143,0.05) 0%, transparent 100%);
            border-radius: var(--radius-lg);
            padding: 48px 40px;
            text-align: center;
            border: 1px solid var(--border);
        }
        .bottom-cta h2 {
            font-size: clamp(24px, 3.5vw, 32px);
            font-weight: 700;
            color: var(--text-dark);
            margin: 0 0 12px 0;
        }
        .bottom-cta p {
            font-size: 16px;
            color: var(--text-muted);
            max-width: 560px;
            margin: 0 auto 24px;
            line-height: 1.7;
        }
        .bottom-cta .btn-group {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 12px;
            flex-wrap: wrap;
        }

        /* ========== FAQ Section ========== */
        .faq-section {
            padding: 40px 0 64px;
        }
        .faq-section .section-title {
            font-size: clamp(22px, 3vw, 28px);
            font-weight: 700;
            color: var(--text-dark);
            margin: 0 0 24px 0;
        }
        .faq-item {
            background: #FFFFFF;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            margin-bottom: 12px;
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(27,91,143,0.3);
        }
        .faq-item details {
            outline: none;
        }
        .faq-item summary {
            list-style: none;
            cursor: pointer;
            padding: 16px 20px;
            font-weight: 700;
            font-size: 16px;
            color: var(--text-dark);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            user-select: none;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary .faq-icon {
            flex-shrink: 0;
            color: var(--primary);
            font-size: 14px;
            transition: transform 0.3s ease;
        }
        .faq-item details[open] summary .faq-icon {
            transform: rotate(180deg);
        }
        .faq-item .faq-answer {
            padding: 0 20px 18px;
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.7;
            border-top: 1px solid var(--border);
            padding-top: 14px;
            margin: 0 20px 18px;
            padding-left: 0;
            padding-right: 0;
        }

        /* ========== Footer ========== */
        .site-footer {
            background: #FFFFFF;
            border-top: 1px solid var(--border);
            padding: 48px 0 32px;
            margin-top: 40px;
        }
        .footer-top-links {
            display: flex;
            align-items: center;
            gap: 12px;
            padding-bottom: 20px;
            border-bottom: 1px solid var(--border);
            margin-bottom: 32px;
            font-size: 14px;
            font-weight: 600;
        }
        .footer-top-links a {
            color: var(--primary);
        }
        .footer-top-links a:hover {
            color: var(--primary-dark);
        }
        .footer-top-links span {
            color: #CBD5E1;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-brand .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 12px;
        }
        .footer-brand .footer-logo .nav-logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            font-size: 12px;
        }
        .footer-brand .footer-logo span {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-dark);
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin: 0;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-dark);
            margin: 0 0 14px 0;
        }
        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            font-size: 14px;
            color: var(--text-muted);
            transition: color var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--primary);
        }
        .footer-bottom {
            border-top: 1px solid var(--border);
            padding-top: 20px;
            text-align: center;
            font-size: 13px;
            color: var(--text-light);
        }
        .footer-bottom a {
            color: var(--text-muted);
        }
        .footer-bottom a:hover {
            color: var(--primary);
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .site-footer {
                padding: 32px 0 24px;
            }
            .bottom-cta {
                padding: 32px 20px;
            }
        }

        /* ========== Extra utility ========== */
        .section-spacing {
            padding: 40px 0;
        }
        .text-center {
            text-align: center;
        }
        .mb-0 {
            margin-bottom: 0;
        }
        .mt-0 {
            margin-top: 0;
        }

/* roulang page: category1 */
:root {
            --primary: #1B5B8F;
            --primary-dark: #15507E;
            --primary-light: #EBF2FA;
            --secondary: #2F9E73;
            --secondary-light: #E8F6F0;
            --text-dark: #1E293B;
            --text-body: #3E4C59;
            --text-muted: #52606D;
            --text-light: #94A3B8;
            --card-bg: #FFFFFF;
            --page-bg: #F6F9FC;
            --border: #E6EEF6;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 10px rgba(27,91,143,0.06);
            --shadow-md: 0 10px 24px rgba(27,91,143,0.12);
            --shadow-lg: 0 16px 40px rgba(27,91,143,0.14);
            --font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
            --transition: 0.22s ease;
            --nav-height: 68px;
            --nav-height-mobile: 56px;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--font-family);
            background-color: var(--page-bg);
            color: var(--text-body);
            line-height: 1.8;
            font-size: 16px;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            margin: 0;
        }
        main {
            flex: 1 0 auto;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button {
            font-family: var(--font-family);
            cursor: pointer;
        }
        input {
            font-family: var(--font-family);
        }
        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 640px) {
            .container-custom {
                padding: 0 20px;
            }
            body {
                font-size: 15px;
                line-height: 1.7;
            }
        }

        /* ========== Header / Navigation ========== */
        .site-header {
            background: #FFFFFF;
            position: sticky;
            top: 0;
            z-index: 100;
            height: var(--nav-height);
            display: flex;
            align-items: center;
            border-bottom: 1px solid var(--border);
            transition: box-shadow var(--transition);
        }
        .site-header.scrolled {
            box-shadow: 0 4px 16px rgba(27,91,143,0.1);
        }
        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            width: 100%;
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .nav-logo-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: var(--primary);
            color: #FFFFFF;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 14px;
            letter-spacing: -0.5px;
            flex-shrink: 0;
        }
        .nav-logo-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-dark);
            letter-spacing: -0.3px;
        }
        .nav-logo-text span {
            color: var(--primary);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-links li a {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-muted);
            padding: 6px 0;
            position: relative;
            transition: color var(--transition);
        }
        .nav-links li a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--primary);
            transition: width var(--transition);
        }
        .nav-links li a:hover,
        .nav-links li a.active {
            color: var(--primary);
        }
        .nav-links li a:hover::after,
        .nav-links li a.active::after {
            width: 100%;
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 22px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 600;
            border: none;
            line-height: 1.4;
            transition: all var(--transition);
            text-align: center;
            cursor: pointer;
        }
        .btn-primary {
            background: var(--primary);
            color: #FFFFFF;
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            color: #FFFFFF;
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(27,91,143,0.25);
        }
        .btn-primary:focus-visible {
            outline: 3px solid rgba(27,91,143,0.3);
            outline-offset: 2px;
        }
        .btn-primary:active {
            transform: scale(0.98);
        }
        .btn-secondary {
            background: #FFFFFF;
            color: var(--primary);
            border: 1.5px solid var(--primary);
        }
        .btn-secondary:hover {
            background: var(--primary-light);
            color: var(--primary-dark);
            transform: translateY(-2px);
        }
        .btn-secondary:focus-visible {
            outline: 3px solid rgba(27,91,143,0.3);
            outline-offset: 2px;
        }
        .btn-secondary:active {
            transform: scale(0.98);
        }
        .btn-green-outline {
            background: #FFFFFF;
            color: var(--secondary);
            border: 1.5px solid var(--secondary);
        }
        .btn-green-outline:hover {
            background: var(--secondary-light);
            color: var(--secondary);
            transform: translateY(-2px);
        }
        .btn-sm {
            padding: 8px 16px;
            font-size: 14px;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 24px;
            color: var(--text-dark);
            padding: 8px;
            cursor: pointer;
        }

        /* ========== Breadcrumb ========== */
        .breadcrumb-section {
            padding: 28px 0 12px;
        }
        .breadcrumb-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-muted);
        }
        .breadcrumb-nav a {
            color: var(--text-muted);
            transition: color var(--transition);
        }
        .breadcrumb-nav a:hover {
            color: var(--primary);
        }
        .breadcrumb-nav .separator {
            color: var(--text-light);
            font-size: 12px;
        }
        .breadcrumb-nav .current {
            color: var(--primary);
            font-weight: 500;
        }

        /* ========== Category Hero / H1 Section ========== */
        .category-hero {
            padding: 20px 0 48px;
            background: linear-gradient(to bottom, rgba(27,91,143,0.04), transparent);
        }
        .category-h1-wrap {
            text-align: left;
            max-width: 800px;
        }
        .category-h1-wrap h1 {
            font-size: clamp(30px, 4.5vw, 44px);
            font-weight: 700;
            color: var(--text-dark);
            line-height: 1.25;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }
        .category-h1-wrap h1 .h1-accent {
            color: var(--primary);
            border-bottom: 3px solid var(--primary);
            padding-bottom: 4px;
        }
        .category-intro {
            font-size: 16px;
            color: var(--text-muted);
            line-height: 1.9;
            max-width: 820px;
        }

        /* ========== Section Common ========== */
        .section-block {
            padding: 48px 0;
        }
        .section-block.alt-bg {
            background: #FFFFFF;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }
        .section-label {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            background: var(--primary-light);
            border-radius: 20px;
            padding: 4px 14px;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }
        .section-title {
            font-size: clamp(24px, 3.5vw, 32px);
            font-weight: 700;
            color: var(--text-dark);
            line-height: 1.3;
            margin-bottom: 16px;
            letter-spacing: -0.3px;
        }
        .section-desc {
            font-size: 16px;
            color: var(--text-muted);
            line-height: 1.8;
            max-width: 700px;
            margin-bottom: 32px;
        }

        /* ========== Match List Cards ========== */
        .match-list-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }
        .match-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            display: flex;
            flex-direction: column;
            transition: all var(--transition);
        }
        .match-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: rgba(27,91,143,0.4);
        }
        .match-card.featured {
            grid-column: 1 / -1;
            flex-direction: row;
        }
        .match-card-img {
            flex-shrink: 0;
            background: #EAF1F8;
            display: flex;
            align-items: center;
            justify-content: center;
            overflow: hidden;
        }
        .match-card.featured .match-card-img {
            width: 40%;
            min-height: 280px;
        }
        .match-card:not(.featured) .match-card-img {
            width: 100%;
            height: 180px;
        }
        .match-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .match-card-body {
            padding: 20px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .match-card.featured .match-card-body {
            padding: 28px;
        }
        .match-card-date {
            font-size: 13px;
            color: var(--text-light);
            background: #F1F5F9;
            border-radius: 20px;
            padding: 4px 10px;
            display: inline-block;
            margin-bottom: 10px;
            width: fit-content;
            flex-shrink: 0;
        }
        .match-card-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-dark);
            line-height: 1.4;
            margin-bottom: 8px;
            letter-spacing: -0.2px;
        }
        .match-card.featured .match-card-title {
            font-size: 22px;
        }
        .match-card-excerpt {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.7;
            flex: 1;
            margin-bottom: 12px;
        }
        .match-card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            flex-wrap: wrap;
        }
        .match-card-league {
            font-size: 13px;
            color: var(--secondary);
            font-weight: 600;
        }
        .match-card .read-more-btn {
            padding: 6px 14px;
            font-size: 13px;
            border: 1.5px solid var(--primary);
            border-radius: var(--radius-sm);
            background: transparent;
            color: var(--primary);
            font-weight: 600;
            transition: all var(--transition);
            white-space: nowrap;
        }
        .match-card .read-more-btn:hover {
            background: var(--primary);
            color: #FFFFFF;
        }
        .view-all-wrap {
            text-align: center;
            margin-top: 28px;
        }

        /* ========== Filter Toolbar ========== */
        .filter-toolbar {
            background: #FFFFFF;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 16px 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            box-shadow: var(--shadow-sm);
        }
        .filter-tags {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .filter-tag {
            padding: 6px 16px;
            border: 1.5px solid var(--border);
            border-radius: 20px;
            font-size: 13px;
            color: var(--text-muted);
            background: #FFFFFF;
            cursor: pointer;
            transition: all var(--transition);
            white-space: nowrap;
        }
        .filter-tag:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-light);
        }
        .filter-tag.active-tag {
            background: var(--primary);
            border-color: var(--primary);
            color: #FFFFFF;
        }
        .sort-btn {
            padding: 8px 18px;
            border: 1.5px solid var(--border);
            border-radius: var(--radius-sm);
            font-size: 14px;
            color: var(--text-muted);
            background: #FFFFFF;
            cursor: pointer;
            transition: all var(--transition);
            white-space: nowrap;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .sort-btn:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-light);
        }

        /* ========== Stats Cards ========== */
        .stats-cards-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .stat-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 24px;
            box-shadow: var(--shadow-sm);
            text-align: left;
            transition: all var(--transition);
        }
        .stat-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: rgba(27,91,143,0.3);
        }
        .stat-icon {
            width: 44px;
            height: 44px;
            border-radius: 10px;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            margin-bottom: 12px;
        }
        .stat-number {
            font-size: 28px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 4px;
            letter-spacing: -0.5px;
        }
        .stat-label {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 6px;
        }
        .stat-note {
            font-size: 13px;
            color: var(--text-light);
            line-height: 1.5;
        }

        /* ========== Related Reading ========== */
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .related-item {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 20px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .related-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: rgba(27,91,143,0.3);
        }
        .related-item-date {
            font-size: 12px;
            color: var(--text-light);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .related-item-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-dark);
            line-height: 1.4;
        }
        .related-item-title a {
            color: var(--text-dark);
            transition: color var(--transition);
        }
        .related-item-title a:hover {
            color: var(--primary);
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 800px;
        }
        .faq-item {
            border-bottom: 1px solid var(--border);
        }
        .faq-item:last-child {
            border-bottom: none;
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 0;
            cursor: pointer;
            transition: color var(--transition);
            font-weight: 600;
            color: var(--text-dark);
            font-size: 16px;
            line-height: 1.5;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            font-family: var(--font-family);
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question .faq-icon {
            font-size: 14px;
            color: var(--text-light);
            transition: transform var(--transition);
            flex-shrink: 0;
        }
        .faq-item.open .faq-question .faq-icon {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition), padding var(--transition);
            padding: 0 0;
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.8;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 0 18px 0;
        }

        /* ========== Bottom CTA ========== */
        .bottom-cta {
            background: linear-gradient(to bottom, rgba(27,91,143,0.06), transparent);
            padding: 72px 0;
            text-align: center;
        }
        .bottom-cta-inner {
            max-width: 600px;
            margin: 0 auto;
        }
        .bottom-cta-title {
            font-size: clamp(26px, 3.5vw, 36px);
            font-weight: 700;
            color: var(--text-dark);
            line-height: 1.25;
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }
        .bottom-cta-desc {
            font-size: 16px;
            color: var(--text-muted);
            line-height: 1.8;
            margin-bottom: 28px;
        }
        .bottom-cta-actions {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        /* ========== Footer ========== */
        .site-footer {
            background: #FFFFFF;
            border-top: 1px solid var(--border);
            padding: 48px 0 24px;
            margin-top: auto;
        }
        .footer-top-links {
            display: flex;
            align-items: center;
            gap: 8px;
            padding-bottom: 20px;
            border-bottom: 1px solid var(--border);
            margin-bottom: 32px;
            font-size: 15px;
            color: var(--text-muted);
        }
        .footer-top-links a {
            color: var(--primary);
            font-weight: 500;
            transition: color var(--transition);
        }
        .footer-top-links a:hover {
            color: var(--primary-dark);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-top: 12px;
            max-width: 280px;
        }
        .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .footer-logo .nav-logo-icon {
            width: 36px;
            height: 36px;
            font-size: 12px;
        }
        .footer-logo span {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-dark);
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 12px;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            font-size: 14px;
            color: var(--text-muted);
            transition: color var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--primary);
        }
        .footer-bottom {
            border-top: 1px solid var(--border);
            padding-top: 20px;
            text-align: center;
            font-size: 13px;
            color: var(--text-light);
        }
        .footer-bottom a {
            color: var(--text-muted);
            transition: color var(--transition);
        }
        .footer-bottom a:hover {
            color: var(--primary);
        }

        /* ========== Responsive ========== */
        @media (max-width: 1024px) and (min-width: 641px) {
            .match-list-grid {
                grid-template-columns: 1fr 1fr;
            }
            .stats-cards-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1.5fr 1fr 1fr;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: #FFFFFF;
                flex-direction: column;
                gap: 0;
                padding: 16px 20px;
                border-bottom: 1px solid var(--border);
                box-shadow: 0 8px 24px rgba(27,91,143,0.1);
            }
            .nav-links.mobile-open {
                display: flex;
            }
            .nav-links li {
                padding: 10px 0;
                border-bottom: 1px solid #F1F5F9;
                width: 100%;
            }
            .nav-links li:last-child {
                border-bottom: none;
            }
            .nav-actions {
                display: none;
            }
            .nav-actions.mobile-open {
                display: flex;
                flex-direction: column;
                width: 100%;
                gap: 8px;
                position: absolute;
                top: calc(var(--nav-height) + 260px);
                left: 0;
                right: 0;
                background: #FFFFFF;
                padding: 16px 20px;
                border-bottom: 1px solid var(--border);
                box-shadow: 0 8px 24px rgba(27,91,143,0.1);
            }
            .nav-toggle {
                display: block;
            }
            .match-list-grid {
                grid-template-columns: 1fr;
            }
            .match-card.featured {
                flex-direction: column;
            }
            .match-card.featured .match-card-img {
                width: 100%;
                height: 200px;
            }
            .stats-cards-grid {
                grid-template-columns: 1fr;
            }
            .related-grid {
                grid-template-columns: 1fr;
            }
            .filter-toolbar {
                flex-direction: column;
                align-items: flex-start;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
            .category-h1-wrap h1 {
                font-size: 26px;
            }
            .section-block {
                padding: 36px 0;
            }
            .bottom-cta {
                padding: 48px 0;
            }
        }

        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-brand {
                grid-column: auto;
            }
            .footer-top-links {
                flex-wrap: wrap;
                font-size: 14px;
            }
            .match-card-footer {
                flex-direction: column;
                align-items: flex-start;
            }
            .section-title {
                font-size: 22px;
            }
            .bottom-cta-title {
                font-size: 24px;
            }
            .bottom-cta-actions {
                flex-direction: column;
                width: 100%;
            }
            .bottom-cta-actions .btn {
                width: 100%;
            }
        }

/* roulang page: category5 */
:root {
            --primary: #1B5B8F;
            --primary-dark: #15507E;
            --primary-light: #EBF2FA;
            --secondary: #2F9E73;
            --secondary-light: #E8F6F0;
            --text-dark: #1E293B;
            --text-body: #3E4C59;
            --text-muted: #52606D;
            --text-light: #94A3B8;
            --card-bg: #FFFFFF;
            --page-bg: #F6F9FC;
            --border: #E6EEF6;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 10px rgba(27,91,143,0.06);
            --shadow-md: 0 10px 24px rgba(27,91,143,0.12);
            --shadow-lg: 0 16px 40px rgba(27,91,143,0.14);
            --font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
            --transition: 0.22s ease;
            --nav-height: 68px;
            --nav-height-mobile: 56px;
        }

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

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

        body {
            font-family: var(--font-family);
            background-color: var(--page-bg);
            color: var(--text-body);
            line-height: 1.8;
            font-size: 16px;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        main {
            flex: 1 0 auto;
        }

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

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

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

        button {
            font-family: var(--font-family);
            cursor: pointer;
        }

        input {
            font-family: var(--font-family);
        }

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

        /* ========== Header / Navigation ========== */
        .site-header {
            background: #FFFFFF;
            position: sticky;
            top: 0;
            z-index: 100;
            height: var(--nav-height);
            display: flex;
            align-items: center;
            border-bottom: 1px solid var(--border);
            transition: box-shadow var(--transition);
        }

        .site-header.scrolled {
            box-shadow: 0 4px 16px rgba(27,91,143,0.1);
        }

        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            width: 100%;
        }

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

        .nav-logo-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: var(--primary);
            color: #FFFFFF;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 14px;
            letter-spacing: -0.5px;
        }

        .nav-logo-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-dark);
            letter-spacing: -0.3px;
        }

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

        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
        }

        .nav-links li a {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-muted);
            padding: 6px 0;
            position: relative;
            transition: color var(--transition);
        }

        .nav-links li a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--primary);
            transition: width var(--transition);
        }

        .nav-links li a:hover,
        .nav-links li a.active {
            color: var(--primary);
        }

        .nav-links li a:hover::after,
        .nav-links li a.active::after {
            width: 100%;
        }

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

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 22px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 600;
            border: none;
            line-height: 1.4;
            transition: all var(--transition);
            text-align: center;
            cursor: pointer;
        }

        .btn-primary {
            background: var(--primary);
            color: #FFFFFF;
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            color: #FFFFFF;
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(27,91,143,0.25);
        }

        .btn-primary:focus-visible {
            outline: 3px solid rgba(27,91,143,0.3);
            outline-offset: 2px;
        }

        .btn-primary:active {
            transform: scale(0.98);
        }

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

        .btn-secondary:hover {
            background: var(--primary-light);
            color: var(--primary-dark);
            transform: translateY(-2px);
        }

        .btn-secondary:focus-visible {
            outline: 3px solid rgba(27,91,143,0.3);
            outline-offset: 2px;
        }

        .btn-secondary:active {
            transform: scale(0.98);
        }

        .btn-green-outline {
            background: #FFFFFF;
            color: var(--secondary);
            border: 1.5px solid var(--secondary);
        }

        .btn-green-outline:hover {
            background: var(--secondary-light);
            color: var(--secondary);
            transform: translateY(-2px);
        }

        .btn-sm {
            padding: 8px 16px;
            font-size: 13px;
            border-radius: 6px;
        }

        .nav-hamburger {
            display: none;
            background: none;
            border: none;
            font-size: 22px;
            color: var(--text-dark);
            padding: 8px;
            cursor: pointer;
        }

        .mobile-menu {
            display: none;
            background: #FFFFFF;
            border-top: 1px solid var(--border);
            padding: 16px 20px;
            flex-direction: column;
            gap: 4px;
        }

        .mobile-menu .nav-links {
            flex-direction: column;
            align-items: stretch;
            gap: 0;
        }

        .mobile-menu .nav-links li a {
            display: block;
            padding: 12px 0;
            border-bottom: 1px solid #F1F5F9;
            font-size: 16px;
        }

        .mobile-menu .nav-links li:last-child a {
            border-bottom: none;
        }

        .mobile-menu .nav-actions {
            flex-direction: column;
            gap: 8px;
            margin-top: 16px;
        }

        .mobile-menu .nav-actions .btn {
            width: 100%;
        }

        /* ========== Breadcrumb ========== */
        .breadcrumb-section {
            padding: 28px 0 20px;
            background: transparent;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-light);
            list-style: none;
            flex-wrap: wrap;
        }

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

        .breadcrumb li + li::before {
            content: '/';
            margin-right: 8px;
            color: var(--text-light);
        }

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

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

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

        /* ========== Category Header ========== */
        .category-header {
            padding: 16px 0 36px;
        }

        .category-header h1 {
            font-size: clamp(28px, 4vw, 40px);
            font-weight: 700;
            color: var(--text-dark);
            line-height: 1.3;
            margin-bottom: 16px;
            position: relative;
            display: inline-block;
            padding-bottom: 12px;
        }

        .category-header h1::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 60px;
            height: 4px;
            background: var(--primary);
            border-radius: 2px;
        }

        .category-header .lead {
            font-size: 16px;
            color: var(--text-muted);
            max-width: 760px;
            line-height: 1.8;
            margin-top: 16px;
        }

        /* ========== Article List Cards ========== */
        .article-list-section {
            padding: 16px 0 56px;
        }

        .article-list-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .article-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }

        .article-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: rgba(27,91,143,0.4);
        }

        .article-card.featured {
            grid-column: span 2;
            display: grid;
            grid-template-columns: 280px 1fr;
            min-height: 220px;
        }

        .article-card-img {
            aspect-ratio: 16/9;
            overflow: hidden;
            background: #EAF1F8;
            position: relative;
            flex-shrink: 0;
        }

        .article-card.featured .article-card-img {
            aspect-ratio: auto;
            height: 100%;
            min-height: 220px;
        }

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

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

        .article-card-body {
            padding: 20px 24px;
            display: flex;
            flex-direction: column;
            gap: 10px;
            flex: 1;
        }

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

        .article-card-date i {
            font-size: 12px;
        }

        .article-card h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-dark);
            line-height: 1.45;
            margin: 0;
        }

        .article-card h3 a {
            color: var(--text-dark);
        }

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

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

        .article-card .read-more {
            font-size: 14px;
            font-weight: 500;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            align-self: flex-start;
            transition: all var(--transition);
        }

        .article-card .read-more i {
            font-size: 12px;
            transition: transform var(--transition);
        }

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

        .article-card .read-more:hover i {
            transform: translateX(4px);
        }

        .article-tag {
            display: inline-block;
            padding: 4px 10px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 500;
            background: var(--primary-light);
            color: var(--primary);
            align-self: flex-start;
        }

        /* ========== Filter Toolbar ========== */
        .filter-toolbar {
            background: #FFFFFF;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 16px 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            margin-bottom: 32px;
            box-shadow: var(--shadow-sm);
        }

        .filter-tags {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }

        .filter-tag {
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 500;
            border: 1px solid var(--border);
            color: var(--text-muted);
            background: #FFFFFF;
            cursor: pointer;
            transition: all var(--transition);
        }

        .filter-tag:hover {
            border-color: var(--secondary);
            color: var(--secondary);
            background: var(--secondary-light);
        }

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

        .filter-sort-btn {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 13px;
            font-weight: 500;
            border: 1px solid var(--border);
            color: var(--text-muted);
            background: #FFFFFF;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            cursor: pointer;
            transition: all var(--transition);
        }

        .filter-sort-btn:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-light);
        }

        /* ========== Support Stats ========== */
        .stats-section {
            padding: 56px 0;
        }

        .stats-section h2 {
            font-size: clamp(22px, 3vw, 30px);
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 28px;
            line-height: 1.35;
        }

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

        .stat-card {
            background: var(--primary-light);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            text-align: left;
            border: 1px solid rgba(27,91,143,0.08);
            transition: all var(--transition);
        }

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

        .stat-number {
            font-size: clamp(28px, 3.5vw, 40px);
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 8px;
        }

        .stat-label {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 6px;
        }

        .stat-desc {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* ========== Related Reading ========== */
        .related-section {
            padding: 56px 0;
        }

        .related-section h2 {
            font-size: clamp(22px, 3vw, 30px);
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 24px;
            line-height: 1.35;
        }

        .related-list {
            display: flex;
            flex-direction: column;
            gap: 0;
            background: #FFFFFF;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }

        .related-item {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 18px 24px;
            border-bottom: 1px solid var(--border);
            transition: background var(--transition);
        }

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

        .related-item:hover {
            background: #FAFCFE;
        }

        .related-item-icon {
            width: 40px;
            height: 40px;
            border-radius: 8px;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            flex-shrink: 0;
        }

        .related-item-content {
            flex: 1;
        }

        .related-item-content h3 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-dark);
            margin: 0 0 4px;
            line-height: 1.4;
        }

        .related-item-content p {
            font-size: 13px;
            color: var(--text-light);
            margin: 0;
        }

        .related-item-arrow {
            color: var(--text-light);
            font-size: 14px;
            flex-shrink: 0;
            transition: all var(--transition);
        }

        .related-item:hover .related-item-arrow {
            color: var(--primary);
            transform: translateX(4px);
        }

        /* ========== CTA Section ========== */
        .cta-section {
            padding: 56px 0 72px;
        }

        .cta-box {
            background: linear-gradient(135deg, rgba(27,91,143,0.04) 0%, transparent 60%);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 48px 40px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            flex-wrap: wrap;
            box-shadow: var(--shadow-sm);
        }

        .cta-box-content {
            flex: 1;
            min-width: 280px;
        }

        .cta-box h2 {
            font-size: clamp(22px, 3vw, 30px);
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 12px;
            line-height: 1.35;
        }

        .cta-box p {
            font-size: 15px;
            color: var(--text-muted);
            margin: 0;
            max-width: 520px;
            line-height: 1.7;
        }

        .cta-box-actions {
            display: flex;
            gap: 12px;
            flex-shrink: 0;
            flex-wrap: wrap;
        }

        /* ========== FAQ Section ========== */
        .faq-section {
            padding: 16px 0 72px;
        }

        .faq-section h2 {
            font-size: clamp(22px, 3vw, 30px);
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 24px;
            line-height: 1.35;
        }

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

        .faq-item {
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            background: #FFFFFF;
            margin-bottom: 12px;
            overflow: hidden;
            transition: all var(--transition);
        }

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

        .faq-item summary {
            padding: 18px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-dark);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            list-style: none;
            transition: color var(--transition);
        }

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

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

        .faq-item summary .faq-icon {
            font-size: 14px;
            color: var(--text-light);
            transition: all var(--transition);
            flex-shrink: 0;
        }

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

        .faq-item .faq-answer {
            padding: 0 24px 20px;
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.8;
            border-top: 1px solid var(--border);
            padding-top: 16px;
            margin: 0 24px;
        }

        /* ========== Footer ========== */
        .site-footer {
            background: #FFFFFF;
            border-top: 1px solid var(--border);
            padding: 48px 0 24px;
            flex-shrink: 0;
        }

        .footer-top-links {
            display: flex;
            align-items: center;
            gap: 12px;
            padding-bottom: 32px;
            border-bottom: 1px solid var(--border);
            margin-bottom: 32px;
            font-size: 14px;
        }

        .footer-top-links a {
            color: var(--primary);
            font-weight: 500;
        }

        .footer-top-links a:hover {
            color: var(--primary-dark);
        }

        .footer-top-links span {
            color: var(--text-light);
        }

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

        .footer-brand p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-top: 12px;
            max-width: 320px;
        }

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

        .footer-logo .nav-logo-icon {
            width: 32px;
            height: 32px;
            border-radius: 8px;
            font-size: 12px;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 16px;
        }

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

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

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

        .footer-bottom {
            padding-top: 24px;
            border-top: 1px solid var(--border);
            margin-top: 32px;
            font-size: 13px;
            color: var(--text-light);
        }

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

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

        /* ========== Responsive ========== */
        @media (max-width: 1024px) {
            .nav-links {
                gap: 18px;
            }
            .article-list-grid {
                grid-template-columns: 1fr;
            }
            .article-card.featured {
                grid-column: span 1;
                grid-template-columns: 1fr;
            }
            .article-card.featured .article-card-img {
                aspect-ratio: 16/9;
                min-height: auto;
            }
            .stats-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            :root {
                --nav-height: 56px;
            }
            .nav-links {
                display: none;
            }
            .nav-actions {
                display: none;
            }
            .nav-hamburger {
                display: block;
            }
            .mobile-menu.open {
                display: flex;
            }
            .mobile-menu .nav-actions {
                display: flex;
            }
            .container-custom {
                padding: 0 20px;
            }
            .article-list-grid {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .stat-card {
                padding: 20px 16px;
            }
            .cta-box {
                padding: 32px 24px;
                flex-direction: column;
                align-items: flex-start;
            }
            .cta-box-actions {
                width: 100%;
            }
            .cta-box-actions .btn {
                flex: 1;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .category-header h1 {
                font-size: 28px;
            }
            .filter-toolbar {
                flex-direction: column;
                align-items: flex-start;
            }
        }

        @media (max-width: 520px) {
            .article-card-body {
                padding: 16px 18px;
            }
            .article-card h3 {
                font-size: 16px;
            }
            .article-card p {
                font-size: 13px;
            }
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .faq-item summary {
                padding: 14px 16px;
                font-size: 15px;
            }
            .faq-item .faq-answer {
                padding: 0 16px 16px;
                margin: 0 16px;
                font-size: 14px;
            }
            .cta-box h2 {
                font-size: 20px;
            }
            .breadcrumb {
                font-size: 13px;
            }
            .category-header .lead {
                font-size: 15px;
            }
            .footer-top-links {
                flex-wrap: wrap;
                gap: 6px;
            }
        }

/* roulang page: category4 */
:root {
            --primary: #1B5B8F;
            --primary-dark: #15507E;
            --primary-light: #EBF2FA;
            --secondary: #2F9E73;
            --secondary-light: #E8F6F0;
            --text-dark: #1E293B;
            --text-body: #3E4C59;
            --text-muted: #52606D;
            --text-light: #94A3B8;
            --card-bg: #FFFFFF;
            --page-bg: #F6F9FC;
            --border: #E6EEF6;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 10px rgba(27,91,143,0.06);
            --shadow-md: 0 10px 24px rgba(27,91,143,0.12);
            --shadow-lg: 0 16px 40px rgba(27,91,143,0.14);
            --font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
            --transition: 0.22s ease;
            --nav-height: 68px;
            --nav-height-mobile: 56px;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--font-family);
            background-color: var(--page-bg);
            color: var(--text-body);
            line-height: 1.8;
            font-size: 16px;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            margin: 0;
        }
        main {
            flex: 1 0 auto;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button {
            font-family: var(--font-family);
            cursor: pointer;
        }
        input {
            font-family: var(--font-family);
        }
        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ========== Header / Navigation ========== */
        .site-header {
            background: #FFFFFF;
            position: sticky;
            top: 0;
            z-index: 100;
            height: var(--nav-height);
            display: flex;
            align-items: center;
            border-bottom: 1px solid var(--border);
            transition: box-shadow var(--transition);
        }
        .site-header.scrolled {
            box-shadow: 0 4px 16px rgba(27,91,143,0.1);
        }
        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            width: 100%;
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .nav-logo-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: var(--primary);
            color: #FFFFFF;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 14px;
            letter-spacing: -0.5px;
        }
        .nav-logo-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-dark);
            letter-spacing: -0.3px;
        }
        .nav-logo-text span {
            color: var(--primary);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-links li a {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-muted);
            padding: 6px 0;
            position: relative;
            transition: color var(--transition);
            display: block;
        }
        .nav-links li a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--primary);
            transition: width var(--transition);
        }
        .nav-links li a:hover,
        .nav-links li a.active {
            color: var(--primary);
        }
        .nav-links li a:hover::after,
        .nav-links li a.active::after {
            width: 100%;
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 22px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 600;
            border: none;
            line-height: 1.4;
            transition: all var(--transition);
            text-align: center;
            text-decoration: none;
            cursor: pointer;
        }
        .btn-primary {
            background: var(--primary);
            color: #FFFFFF;
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            color: #FFFFFF;
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(27,91,143,0.25);
        }
        .btn-primary:focus-visible {
            outline: 3px solid rgba(27,91,143,0.3);
            outline-offset: 2px;
        }
        .btn-primary:active {
            transform: scale(0.98);
        }
        .btn-secondary {
            background: #FFFFFF;
            color: var(--primary);
            border: 1.5px solid var(--primary);
        }
        .btn-secondary:hover {
            background: var(--primary-light);
            color: var(--primary-dark);
            transform: translateY(-2px);
        }
        .btn-secondary:focus-visible {
            outline: 3px solid rgba(27,91,143,0.3);
            outline-offset: 2px;
        }
        .btn-secondary:active {
            transform: scale(0.98);
        }
        .btn-green-outline {
            background: #FFFFFF;
            color: var(--secondary);
            border: 1.5px solid var(--secondary);
        }
        .btn-green-outline:hover {
            background: var(--secondary-light);
            color: var(--secondary);
            transform: translateY(-2px);
        }
        .btn-sm {
            padding: 8px 18px;
            font-size: 14px;
            border-radius: 6px;
        }
        .nav-hamburger {
            display: none;
            background: none;
            border: none;
            font-size: 24px;
            color: var(--text-dark);
            padding: 8px;
            line-height: 1;
            cursor: pointer;
        }

        /* ========== Breadcrumbs ========== */
        .breadcrumb-section {
            background: #FFFFFF;
            border-bottom: 1px solid var(--border);
            padding: 14px 0;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-light);
            list-style: none;
            margin: 0;
            padding: 0;
            flex-wrap: wrap;
        }
        .breadcrumb li {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .breadcrumb li a {
            color: var(--text-muted);
            transition: color var(--transition);
        }
        .breadcrumb li a:hover {
            color: var(--primary);
        }
        .breadcrumb li.current {
            color: var(--primary);
            font-weight: 600;
        }
        .breadcrumb-sep {
            color: var(--text-light);
            font-size: 12px;
        }

        /* ========== Category H1 Section ========== */
        .category-head-section {
            background: linear-gradient(180deg, rgba(27,91,143,0.04) 0%, transparent 100%);
            padding: 56px 0 40px;
        }
        .category-head-inner {
            max-width: 800px;
        }
        .category-h1 {
            font-size: clamp(30px, 4.5vw, 48px);
            font-weight: 700;
            color: var(--text-dark);
            line-height: 1.25;
            margin: 0 0 16px;
            position: relative;
            display: inline-block;
        }
        .category-h1::after {
            content: '';
            position: absolute;
            bottom: -8px;
            left: 0;
            width: 60px;
            height: 3px;
            background: var(--primary);
            border-radius: 3px;
        }
        .category-intro {
            font-size: 17px;
            color: var(--text-body);
            line-height: 1.8;
            margin: 20px 0 0;
            max-width: 720px;
        }

        /* ========== Card List ========== */
        .card-list-section {
            padding: 48px 0 32px;
        }
        .card-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }
        .content-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }
        .content-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: rgba(27,91,143,0.4);
        }
        .content-card.featured-card {
            grid-column: span 2;
            flex-direction: row;
        }
        .content-card-image {
            background: #EAF1F8;
            min-height: 200px;
            display: flex;
            align-items: center;
            justify-content: center;
            overflow: hidden;
            position: relative;
        }
        .content-card.featured-card .content-card-image {
            min-height: auto;
            flex: 0 0 45%;
            min-width: 300px;
        }
        .content-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .content-card-body {
            padding: 20px 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .content-card-date {
            font-size: 13px;
            color: var(--text-light);
            background: #F1F5F9;
            padding: 4px 12px;
            border-radius: 20px;
            display: inline-block;
            margin-bottom: 12px;
            align-self: flex-start;
        }
        .content-card-title {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-dark);
            line-height: 1.4;
            margin: 0 0 10px;
        }
        .content-card-summary {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.7;
            margin: 0 0 16px;
            flex: 1;
        }
        .content-card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            flex-wrap: wrap;
            margin-top: auto;
        }
        .content-card-tag {
            font-size: 13px;
            color: var(--text-light);
        }
        .read-more-btn {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            border: 1.5px solid var(--primary);
            padding: 8px 16px;
            border-radius: 6px;
            background: transparent;
            transition: all var(--transition);
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .read-more-btn:hover {
            background: var(--primary);
            color: #FFFFFF;
        }

        /* ========== Filter Bar ========== */
        .filter-section {
            padding: 20px 0 32px;
        }
        .filter-bar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            background: #FFFFFF;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 16px 20px;
            box-shadow: var(--shadow-sm);
        }
        .filter-tags {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
        }
        .filter-tag {
            font-size: 14px;
            font-weight: 500;
            color: var(--text-muted);
            border: 1.5px solid var(--border);
            padding: 8px 16px;
            border-radius: 20px;
            cursor: default;
            transition: all var(--transition);
            background: #FFFFFF;
        }
        .filter-tag:hover {
            border-color: var(--secondary);
            color: var(--secondary);
        }
        .filter-tag.active-tag {
            background: var(--primary);
            color: #FFFFFF;
            border-color: var(--primary);
        }
        .filter-sort-btn {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-muted);
            border: 1.5px solid var(--border);
            padding: 8px 18px;
            border-radius: 6px;
            background: #FFFFFF;
            cursor: pointer;
            transition: all var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            white-space: nowrap;
        }
        .filter-sort-btn:hover {
            background: var(--primary-light);
            border-color: var(--primary);
            color: var(--primary);
        }

        /* ========== Stats Section ========== */
        .stats-section {
            padding: 40px 0 48px;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .stat-card {
            background: var(--primary-light);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            text-align: center;
            border: 1px solid rgba(27,91,143,0.12);
            transition: all var(--transition);
        }
        .stat-card:hover {
            background: #FFFFFF;
            box-shadow: var(--shadow-sm);
            transform: translateY(-3px);
        }
        .stat-number {
            font-size: 38px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 6px;
        }
        .stat-label {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 4px;
        }
        .stat-desc {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* ========== Related Reading ========== */
        .related-section {
            padding: 40px 0 48px;
            background: #FFFFFF;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }
        .section-title {
            font-size: clamp(24px, 3.5vw, 34px);
            font-weight: 700;
            color: var(--text-dark);
            line-height: 1.3;
            margin: 0 0 24px;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .related-card {
            background: var(--page-bg);
            border-radius: var(--radius-sm);
            padding: 20px;
            border: 1px solid var(--border);
            transition: all var(--transition);
        }
        .related-card:hover {
            background: #FFFFFF;
            box-shadow: var(--shadow-sm);
            transform: translateY(-3px);
            border-color: rgba(27,91,143,0.3);
        }
        .related-card h4 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-dark);
            margin: 0 0 8px;
            line-height: 1.4;
        }
        .related-card p {
            font-size: 14px;
            color: var(--text-muted);
            margin: 0 0 12px;
            line-height: 1.7;
        }
        .related-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            transition: color var(--transition);
        }
        .related-link:hover {
            color: var(--primary-dark);
        }

        /* ========== CTA Section ========== */
        .cta-section {
            padding: 64px 0;
            background: linear-gradient(180deg, rgba(27,91,143,0.04) 0%, transparent 100%);
        }
        .cta-card {
            background: #FFFFFF;
            border-radius: var(--radius-lg);
            padding: 48px 40px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            max-width: 820px;
            margin: 0 auto;
        }
        .cta-card h2 {
            font-size: clamp(24px, 3.5vw, 32px);
            font-weight: 700;
            color: var(--text-dark);
            margin: 0 0 12px;
            line-height: 1.3;
        }
        .cta-card p {
            font-size: 16px;
            color: var(--text-muted);
            margin: 0 0 24px;
            line-height: 1.7;
        }
        .cta-buttons {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        /* ========== FAQ Section ========== */
        .faq-section {
            padding: 48px 0 64px;
        }
        .faq-list {
            max-width: 820px;
            margin: 0 auto;
        }
        .faq-item {
            background: #FFFFFF;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            margin-bottom: 12px;
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(27,91,143,0.3);
        }
        .faq-item summary {
            padding: 16px 20px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-dark);
            cursor: pointer;
            list-style: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            transition: all var(--transition);
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary:hover {
            color: var(--primary);
        }
        .faq-item summary .faq-icon {
            font-size: 16px;
            color: var(--primary);
            transition: transform var(--transition);
            flex-shrink: 0;
        }
        .faq-item[open] summary .faq-icon {
            transform: rotate(180deg);
        }
        .faq-answer {
            padding: 0 20px 16px;
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.8;
            border-top: 1px solid var(--border);
            padding-top: 14px;
        }

        /* ========== Footer ========== */
        .site-footer {
            background: #FFFFFF;
            border-top: 1px solid var(--border);
            padding-top: 40px;
            flex-shrink: 0;
        }
        .footer-top-links {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 15px;
            padding-bottom: 20px;
            border-bottom: 1px solid var(--border);
            margin-bottom: 28px;
            flex-wrap: wrap;
        }
        .footer-top-links a {
            color: var(--primary);
            font-weight: 500;
            transition: color var(--transition);
        }
        .footer-top-links a:hover {
            color: var(--primary-dark);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            padding-bottom: 28px;
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin: 12px 0 0;
            max-width: 300px;
        }
        .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .footer-logo span {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-dark);
        }
        .footer-col h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-dark);
            margin: 0 0 14px;
        }
        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            font-size: 14px;
            color: var(--text-muted);
            transition: color var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--primary);
        }
        .footer-bottom {
            padding: 20px 0;
            border-top: 1px solid var(--border);
            text-align: center;
        }
        .footer-bottom p {
            font-size: 13px;
            color: var(--text-light);
            margin: 0;
        }
        .footer-bottom a {
            color: var(--text-light);
            transition: color var(--transition);
        }
        .footer-bottom a:hover {
            color: var(--primary);
        }

        /* ========== Mobile Nav Overlay ========== */
        .mobile-menu-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0,0,0,0.4);
            z-index: 98;
        }
        .mobile-menu-overlay.open {
            display: block;
        }
        .mobile-menu-panel {
            position: fixed;
            top: 0;
            right: -100%;
            width: 85%;
            max-width: 340px;
            height: 100%;
            background: #FFFFFF;
            z-index: 99;
            padding: 20px;
            transition: right 0.3s ease;
            overflow-y: auto;
            box-shadow: -4px 0 24px rgba(0,0,0,0.15);
        }
        .mobile-menu-panel.open {
            right: 0;
        }
        .mobile-menu-panel .nav-links {
            flex-direction: column;
            gap: 6px;
            margin-top: 20px;
        }
        .mobile-menu-panel .nav-links li a {
            display: block;
            padding: 12px 0;
            border-bottom: 1px solid var(--border);
            font-size: 16px;
        }
        .mobile-menu-panel .nav-actions {
            flex-direction: column;
            gap: 8px;
            margin-top: 20px;
        }
        .mobile-menu-panel .nav-actions .btn {
            width: 100%;
        }
        .mobile-menu-close {
            position: absolute;
            top: 16px;
            right: 16px;
            background: none;
            border: none;
            font-size: 26px;
            color: var(--text-dark);
            cursor: pointer;
            padding: 4px;
            line-height: 1;
        }
        .mobile-menu-panel .nav-logo {
            padding-bottom: 16px;
            border-bottom: 1px solid var(--border);
        }

        /* ========== Responsive ========== */
        @media (max-width: 1024px) {
            .card-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .content-card.featured-card {
                grid-column: span 2;
                flex-direction: column;
            }
            .content-card.featured-card .content-card-image {
                flex: 0 0 auto;
                min-width: auto;
                min-height: 220px;
            }
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 16px;
            }
            .footer-grid {
                grid-template-columns: 2fr 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }
            .nav-actions {
                display: none;
            }
            .nav-hamburger {
                display: block;
            }
            .site-header {
                height: var(--nav-height-mobile);
            }
            .card-grid {
                grid-template-columns: 1fr;
            }
            .content-card.featured-card {
                grid-column: span 1;
                flex-direction: column;
            }
            .content-card.featured-card .content-card-image {
                min-height: 200px;
            }
            .related-grid {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .filter-bar {
                flex-direction: column;
                align-items: stretch;
            }
            .filter-tags {
                justify-content: center;
            }
            .filter-sort-btn {
                justify-content: center;
            }
            .cta-card {
                padding: 36px 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .category-head-section {
                padding: 36px 0 28px;
            }
            .card-list-section {
                padding: 32px 0 20px;
            }
        }
        @media (max-width: 520px) {
            .container-custom {
                padding: 0 16px;
            }
            .nav-logo-text {
                font-size: 17px;
            }
            .nav-logo-icon {
                width: 34px;
                height: 34px;
                font-size: 12px;
                border-radius: 8px;
            }
            .card-list-section {
                padding: 24px 0 16px;
            }
            .content-card-body {
                padding: 16px 18px;
            }
            .content-card-title {
                font-size: 18px;
            }
            .content-card-summary {
                font-size: 14px;
            }
            .stat-number {
                font-size: 30px;
            }
            .section-title {
                font-size: 22px;
            }
            .cta-card h2 {
                font-size: 22px;
            }
            .btn {
                padding: 10px 18px;
                font-size: 14px;
            }
            .breadcrumb-section {
                padding: 10px 0;
            }
        }