/* roulang page: index */
:root {
            --primary: #0f1a2e;
            --primary-light: #1a2d4a;
            --accent: #d4a84b;
            --accent-light: #e8c56d;
            --accent-dark: #b8923a;
            --bg-dark: #0a111f;
            --bg-card: #ffffff;
            --bg-light: #f8f7f4;
            --text-dark: #1a1a2e;
            --text-muted: #6b7280;
            --text-light: #f1f1f1;
            --border-color: #e5e7eb;
            --radius: 12px;
            --radius-sm: 8px;
            --shadow: 0 10px 40px rgba(0,0,0,0.08);
            --shadow-hover: 0 20px 60px rgba(0,0,0,0.15);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        body {
            font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            color: var(--text-dark);
            background: #ffffff;
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }

        img { max-width:100%; height:auto; display:block; }
        a { text-decoration:none; color:inherit; transition: var(--transition); }
        ul, ol { list-style:none; }

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

        .section-title {
            font-size: 2.2rem;
            font-weight: 700;
            line-height: 1.25;
            margin-bottom: 0.75rem;
            color: var(--text-dark);
        }
        .section-subtitle {
            font-size: 1.1rem;
            color: var(--text-muted);
            max-width: 640px;
            line-height: 1.6;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 36px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            background: var(--accent);
            color: #fff;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: 0 4px 16px rgba(212,168,75,0.3);
        }
        .btn-primary:hover {
            background: var(--accent-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(212,168,75,0.4);
        }
        .btn-primary:focus-visible {
            outline: 3px solid var(--accent-light);
            outline-offset: 2px;
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 32px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255,255,255,0.5);
            cursor: pointer;
            transition: var(--transition);
        }
        .btn-outline:hover {
            border-color: #fff;
            background: rgba(255,255,255,0.08);
            transform: translateY(-2px);
        }
        .btn-outline:focus-visible {
            outline: 3px solid rgba(255,255,255,0.6);
            outline-offset: 2px;
        }

        .card {
            background: var(--bg-card);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            overflow: hidden;
            transition: var(--transition);
            border: 1px solid var(--border-color);
        }
        .card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }

        .badge {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 600;
            background: rgba(212,168,75,0.12);
            color: var(--accent-dark);
            letter-spacing: 0.3px;
        }

        .glass {
            background: rgba(255,255,255,0.06);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid rgba(255,255,255,0.08);
        }

        /* Header Topbar */
        .topbar {
            background: var(--primary);
            color: rgba(255,255,255,0.8);
            font-size: 0.85rem;
            padding: 8px 0;
            border-bottom: 1px solid rgba(255,255,255,0.05);
        }
        .topbar a { color: rgba(255,255,255,0.8); }
        .topbar a:hover { color: var(--accent); }

        /* Navbar */
        .navbar {
            background: #ffffff;
            border-bottom: 1px solid var(--border-color);
            position: sticky;
            top: 0;
            z-index: 100;
            transition: var(--transition);
        }
        .navbar.scrolled {
            box-shadow: 0 4px 30px rgba(0,0,0,0.06);
        }
        .navbar .nav-link {
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-dark);
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
            position: relative;
        }
        .navbar .nav-link:hover {
            color: var(--accent-dark);
            background: rgba(212,168,75,0.06);
        }
        .navbar .nav-link.active {
            color: var(--accent-dark);
            background: rgba(212,168,75,0.1);
        }
        .navbar .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 24px;
            height: 3px;
            background: var(--accent);
            border-radius: 4px;
        }

        /* Hero */
        .hero {
            position: relative;
            min-height: 70vh;
            display: flex;
            align-items: center;
            background: var(--bg-dark);
            overflow: hidden;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.35;
            z-index: 0;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(10,17,31,0.92) 0%, rgba(15,26,46,0.7) 50%, rgba(10,17,31,0.85) 100%);
            z-index: 1;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            width: 100%;
            padding: 80px 0;
        }

        /* Stats */
        .stat-card {
            text-align: center;
            padding: 28px 20px;
            border-radius: var(--radius);
            background: rgba(255,255,255,0.04);
            border: 1px solid rgba(255,255,255,0.06);
            transition: var(--transition);
        }
        .stat-card:hover {
            background: rgba(255,255,255,0.08);
            border-color: rgba(212,168,75,0.2);
            transform: translateY(-2px);
        }
        .stat-number {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.1;
        }
        .stat-label {
            font-size: 0.95rem;
            color: rgba(255,255,255,0.7);
            margin-top: 6px;
        }

        /* Feature cards */
        .feature-icon {
            width: 56px;
            height: 56px;
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: var(--accent-dark);
            background: rgba(212,168,75,0.1);
            transition: var(--transition);
        }
        .card:hover .feature-icon {
            background: var(--accent);
            color: #fff;
        }

        /* FAQ */
        .faq-item {
            border-bottom: 1px solid var(--border-color);
            padding: 20px 0;
            cursor: pointer;
        }
        .faq-item:last-child { border-bottom: none; }
        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 600;
            font-size: 1.05rem;
            color: var(--text-dark);
            gap: 16px;
        }
        .faq-question i {
            transition: var(--transition);
            color: var(--accent);
            font-size: 1.1rem;
            flex-shrink: 0;
        }
        .faq-item.active .faq-question i {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            color: var(--text-muted);
            line-height: 1.7;
            padding-top: 0;
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
            padding-top: 14px;
        }

        /* CTA section */
        .cta-section {
            background: var(--bg-dark);
            position: relative;
            overflow: hidden;
        }
        .cta-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.15;
            z-index: 0;
        }
        .cta-content {
            position: relative;
            z-index: 1;
        }

        /* Footer */
        .footer {
            background: var(--primary);
            color: rgba(255,255,255,0.75);
            font-size: 0.9rem;
        }
        .footer a { color: rgba(255,255,255,0.7); }
        .footer a:hover { color: var(--accent); }
        .footer-title {
            font-weight: 700;
            font-size: 1.05rem;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-link {
            display: block;
            padding: 4px 0;
            font-size: 0.9rem;
        }
        .footer-divider {
            border-color: rgba(255,255,255,0.06);
            margin: 24px 0;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.06);
            padding: 20px 0;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.5);
        }

        /* Cms list */
        .cms-item {
            padding: 20px 0;
            border-bottom: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .cms-item:last-child { border-bottom: none; }
        .cms-item:hover {
            padding-left: 12px;
        }
        .cms-item .cms-title {
            font-weight: 600;
            font-size: 1.05rem;
            color: var(--text-dark);
            transition: var(--transition);
        }
        .cms-item:hover .cms-title { color: var(--accent-dark); }
        .cms-meta {
            font-size: 0.82rem;
            color: var(--text-muted);
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            margin-top: 6px;
        }
        .cms-summary {
            color: var(--text-muted);
            font-size: 0.92rem;
            margin-top: 6px;
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        /* Mobile nav */
        .mobile-menu {
            display: none;
        }
        .mobile-menu.open {
            display: block;
        }
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 4px;
            background: none;
            border: none;
        }
        .hamburger span {
            width: 26px;
            height: 2.5px;
            background: var(--text-dark);
            border-radius: 4px;
            transition: var(--transition);
        }
        .hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
        .hamburger.active span:nth-child(2) { opacity: 0; }
        .hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

        /* Responsive */
        @media (max-width: 1024px) {
            .section-title { font-size: 1.9rem; }
            .hero { min-height: 60vh; }
        }

        @media (max-width: 768px) {
            .container { padding: 0 16px; }
            .section-title { font-size: 1.6rem; }
            .section-subtitle { font-size: 0.95rem; }
            .hero { min-height: 50vh; }
            .hero-content { padding: 60px 0; }
            .stat-number { font-size: 2rem; }
            .hamburger { display: flex; }
            .nav-links { display: none; }
            .mobile-menu.open { display: block; }
            .mobile-menu .nav-link {
                display: block;
                padding: 14px 16px;
                border-bottom: 1px solid var(--border-color);
                font-weight: 500;
            }
            .mobile-menu .nav-link.active { color: var(--accent-dark); background: rgba(212,168,75,0.06); }
            .faq-question { font-size: 0.95rem; }
            .btn-primary { padding: 12px 28px; font-size: 0.9rem; }
            .footer { font-size: 0.85rem; }
        }

        @media (max-width: 520px) {
            .section-title { font-size: 1.35rem; }
            .hero { min-height: 40vh; }
            .hero-content { padding: 40px 0; }
            .stat-number { font-size: 1.6rem; }
            .stat-card { padding: 20px 12px; }
            .feature-icon { width: 44px; height: 44px; font-size: 1.2rem; }
            .topbar { font-size: 0.75rem; padding: 6px 0; }
            .btn-primary { padding: 10px 22px; font-size: 0.85rem; }
            .btn-outline { padding: 10px 22px; font-size: 0.85rem; }
        }

        /* utility */
        .text-accent { color: var(--accent); }
        .bg-accent { background: var(--accent); }
        .border-accent { border-color: var(--accent); }
        .hover\:text-accent:hover { color: var(--accent); }

        /* focus visible global */
        :focus-visible {
            outline: 3px solid var(--accent);
            outline-offset: 2px;
        }

        /* smooth scroll */
        html { scroll-behavior: smooth; }

        /* image placeholder fallback */
        .img-cover {
            object-fit: cover;
            width: 100%;
            height: 100%;
        }

        /* list style */
        .check-list li {
            padding: 6px 0;
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 0.95rem;
        }
        .check-list li i {
            color: var(--accent);
            margin-top: 4px;
            flex-shrink: 0;
        }

/* roulang page: article */
:root {
            --primary: #1e3a5f;
            --primary-light: #2a5298;
            --accent: #e63946;
            --accent-dark: #b71c1c;
            --accent-glow: rgba(230, 57, 70, 0.2);
            --bg-dark: #0f1a2e;
            --bg-card: #ffffff;
            --bg-section: #f8fafc;
            --bg-alt: #1a2a44;
            --text-dark: #1e293b;
            --text-muted: #64748b;
            --text-light: #94a3b8;
            --border-light: #e2e8f0;
            --border-card: #e9edf2;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
            --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
            --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --transition: all 0.25s ease;
            --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
        }

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

        body {
            font-family: var(--font-sans);
            background-color: #ffffff;
            color: var(--text-dark);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }

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

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

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

        button, input, textarea {
            font-family: inherit;
            outline: none;
            border: none;
        }

        /* ===== 导航 ===== */
        .navbar {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255,255,255,0.96);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }

        .navbar .nav-link {
            padding: 8px 18px;
            border-radius: 50px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-dark);
            transition: var(--transition);
            position: relative;
        }

        .navbar .nav-link:hover {
            background: rgba(30, 58, 95, 0.06);
            color: var(--primary);
        }

        .navbar .nav-link.active {
            background: var(--primary);
            color: #fff;
        }

        .navbar .nav-link.active:hover {
            background: var(--primary-light);
        }

        /* Hamburger */
        .hamburger {
            display: flex;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 6px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }

        .hamburger span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: var(--primary);
            border-radius: 4px;
            transition: var(--transition);
        }

        .hamburger:hover {
            background: rgba(30, 58, 95, 0.06);
        }

        .mobile-menu {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 20px;
        }

        .mobile-menu.open {
            max-height: 320px;
            padding: 16px 20px 20px;
        }

        .mobile-menu .nav-link {
            display: block;
            padding: 10px 14px;
            border-radius: var(--radius-sm);
            font-size: 1rem;
            font-weight: 500;
            color: var(--text-dark);
            transition: var(--transition);
        }

        .mobile-menu .nav-link:hover {
            background: rgba(30, 58, 95, 0.06);
        }

        .mobile-menu .nav-link.active {
            background: var(--primary);
            color: #fff;
        }

        /* ===== 文章 Hero ===== */
        .article-hero {
            position: relative;
            padding: 80px 0 60px;
            background: linear-gradient(135deg, var(--bg-dark) 0%, #1a2a44 60%, #0f1a2e 100%);
            overflow: hidden;
        }

        .article-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center 30% / cover no-repeat;
            opacity: 0.18;
            pointer-events: none;
        }

        .article-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 20% 50%, rgba(230,57,70,0.12) 0%, transparent 60%);
            pointer-events: none;
        }

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

        .article-hero .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            color: var(--text-light);
            font-size: 0.85rem;
            margin-bottom: 24px;
        }

        .article-hero .breadcrumb a {
            color: rgba(255,255,255,0.65);
            transition: var(--transition);
        }

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

        .article-hero .breadcrumb .sep {
            color: rgba(255,255,255,0.3);
        }

        .article-hero h1 {
            font-size: clamp(1.75rem, 4vw, 2.8rem);
            font-weight: 800;
            color: #fff;
            line-height: 1.25;
            max-width: 900px;
            letter-spacing: -0.02em;
        }

        .article-hero .meta {
            display: flex;
            flex-wrap: wrap;
            gap: 18px 30px;
            margin-top: 22px;
            color: rgba(255,255,255,0.7);
            font-size: 0.92rem;
        }

        .article-hero .meta span {
            display: flex;
            align-items: center;
            gap: 7px;
        }

        .article-hero .meta i {
            color: var(--accent);
        }

        /* ===== 文章正文 ===== */
        .article-body {
            padding: 56px 0 70px;
            background: #ffffff;
        }

        .article-body .content-wrap {
            max-width: 820px;
            margin: 0 auto;
        }

        .article-body .content-card {
            background: #fff;
            border-radius: var(--radius-md);
            padding: 40px 48px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-card);
        }

        .article-body .content-card .article-text {
            font-size: 1.05rem;
            line-height: 1.9;
            color: var(--text-dark);
        }

        .article-body .content-card .article-text p {
            margin-bottom: 1.4em;
        }

        .article-body .content-card .article-text h2,
        .article-body .content-card .article-text h3 {
            margin-top: 1.8em;
            margin-bottom: 0.7em;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.3;
        }

        .article-body .content-card .article-text h2 {
            font-size: 1.55rem;
        }

        .article-body .content-card .article-text h3 {
            font-size: 1.25rem;
        }

        .article-body .content-card .article-text ul,
        .article-body .content-card .article-text ol {
            margin: 1em 0;
            padding-left: 1.6em;
        }

        .article-body .content-card .article-text li {
            margin-bottom: 0.5em;
        }

        .article-body .content-card .article-text a {
            color: var(--accent);
            border-bottom: 1px solid rgba(230,57,70,0.25);
            font-weight: 500;
        }

        .article-body .content-card .article-text a:hover {
            color: var(--accent-dark);
            border-bottom-color: var(--accent-dark);
        }

        .article-body .content-card .article-text blockquote {
            border-left: 4px solid var(--accent);
            background: rgba(230,57,70,0.04);
            padding: 16px 22px;
            margin: 1.6em 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-muted);
            font-style: italic;
        }

        .article-body .content-card .article-text img {
            border-radius: var(--radius-sm);
            margin: 1.6em 0;
            box-shadow: var(--shadow-sm);
        }

        .article-body .not-found {
            text-align: center;
            padding: 60px 20px;
        }

        .article-body .not-found .icon {
            font-size: 4rem;
            color: var(--text-light);
            margin-bottom: 16px;
        }

        .article-body .not-found h2 {
            font-size: 1.6rem;
            color: var(--text-dark);
            margin-bottom: 10px;
        }

        .article-body .not-found p {
            color: var(--text-muted);
            margin-bottom: 24px;
        }

        .article-body .not-found .btn-home {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 32px;
            background: var(--primary);
            color: #fff;
            border-radius: 50px;
            font-weight: 600;
            transition: var(--transition);
        }

        .article-body .not-found .btn-home:hover {
            background: var(--primary-light);
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        /* ===== 相关文章 ===== */
        .related-section {
            padding: 50px 0 70px;
            background: var(--bg-section);
        }

        .related-section .related-title {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 28px;
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .related-section .related-title i {
            color: var(--accent);
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
            gap: 24px;
        }

        .related-card {
            background: #fff;
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-card);
            transition: var(--transition);
        }

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

        .related-card .card-img {
            width: 100%;
            height: 170px;
            object-fit: cover;
            background: var(--border-light);
        }

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

        .related-card .card-body h3 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-dark);
            line-height: 1.4;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .related-card .card-body h3 a {
            color: inherit;
        }

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

        .related-card .card-body .card-meta {
            font-size: 0.82rem;
            color: var(--text-light);
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .related-card .card-body .card-meta i {
            color: var(--accent);
        }

        /* ===== 页脚 ===== */
        .footer {
            background: var(--bg-dark);
            color: #fff;
        }

        .footer .footer-title {
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 18px;
            position: relative;
            padding-bottom: 10px;
        }

        .footer .footer-title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 32px;
            height: 3px;
            background: var(--accent);
            border-radius: 4px;
        }

        .footer .footer-link {
            display: block;
            color: rgba(255,255,255,0.65);
            font-size: 0.9rem;
            padding: 5px 0;
            transition: var(--transition);
        }

        .footer .footer-link:hover {
            color: #fff;
            padding-left: 4px;
        }

        .footer .footer-divider {
            border: none;
            border-top: 1px solid rgba(255,255,255,0.08);
            margin: 30px 0 20px;
        }

        .footer .footer-bottom {
            font-size: 0.85rem;
            color: rgba(255,255,255,0.5);
            text-align: center;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .article-body .content-card {
                padding: 32px 30px;
            }
        }

        @media (max-width: 768px) {
            .article-hero {
                padding: 50px 0 40px;
            }

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

            .article-hero .meta {
                gap: 12px 20px;
                font-size: 0.82rem;
            }

            .article-body .content-card {
                padding: 24px 18px;
                border-radius: var(--radius-sm);
            }

            .article-body .content-card .article-text {
                font-size: 0.98rem;
            }

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

            .related-card .card-img {
                height: 130px;
            }

            .related-card .card-body {
                padding: 14px 16px 16px;
            }

            .related-card .card-body h3 {
                font-size: 0.95rem;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 14px;
            }

            .article-hero h1 {
                font-size: 1.25rem;
            }

            .article-body .content-card {
                padding: 18px 14px;
            }

            .related-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }

            .related-card .card-img {
                height: 180px;
            }

            .footer .grid {
                gap: 24px;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #1a3a5c;
            --primary-light: #2a5a8c;
            --accent: #e8a838;
            --accent-light: #f5c542;
            --accent-dark: #c48a2a;
            --bg-dark: #0f1a2e;
            --bg-card: #ffffff;
            --bg-section: #f6f8fc;
            --text-dark: #1a2a3a;
            --text-body: #3a4a5a;
            --text-light: #6a7a8a;
            --text-white: #f1f4f8;
            --border-light: #e2e8f0;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.10);
            --shadow-lg: 0 20px 50px rgba(0, 0, 0, 0.15);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 24px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            background: var(--bg-section);
            color: var(--text-body);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            transition: var(--transition);
        }
        button {
            cursor: pointer;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 640px) {
            .container {
                padding: 0 16px;
            }
        }

        /* Navigation */
        .navbar {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(226, 232, 240, 0.7);
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.04);
        }
        .nav-link {
            padding: 8px 16px;
            border-radius: 50px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-dark);
            transition: var(--transition);
            white-space: nowrap;
        }
        .nav-link:hover {
            background: rgba(26, 58, 92, 0.06);
            color: var(--primary);
        }
        .nav-link.active {
            background: var(--primary);
            color: #fff;
        }
        .hamburger {
            display: flex;
            flex-direction: column;
            gap: 5px;
            padding: 8px 4px;
            background: transparent;
        }
        .hamburger span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: var(--primary);
            border-radius: 4px;
            transition: var(--transition);
        }
        .hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }
        .mobile-menu {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px;
        }
        .mobile-menu.open {
            max-height: 300px;
            padding: 16px 24px 20px;
        }
        .mobile-menu .nav-link {
            display: block;
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            font-size: 1rem;
        }
        .mobile-menu .nav-link:hover {
            background: rgba(26, 58, 92, 0.05);
        }

        /* Hero */
        .hero-section {
            position: relative;
            min-height: 80vh;
            display: flex;
            align-items: center;
            padding: 120px 0 80px;
            background: var(--bg-dark);
            overflow: hidden;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.25;
            transform: scale(1.05);
            animation: heroZoom 20s ease-in-out infinite alternate;
        }
        @keyframes heroZoom {
            0% {
                transform: scale(1.05);
            }
            100% {
                transform: scale(1.15);
            }
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 26, 46, 0.92) 40%, rgba(15, 26, 46, 0.70) 100%);
        }
        .hero-content {
            position: relative;
            z-index: 2;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 20px;
            background: rgba(232, 168, 56, 0.15);
            border: 1px solid rgba(232, 168, 56, 0.30);
            border-radius: 50px;
            color: var(--accent);
            font-size: 0.9rem;
            font-weight: 600;
            margin-bottom: 20px;
            backdrop-filter: blur(4px);
        }
        .hero-title {
            font-size: clamp(2.6rem, 7vw, 4.6rem);
            font-weight: 800;
            line-height: 1.12;
            color: #fff;
            letter-spacing: -0.02em;
        }
        .hero-title .highlight {
            background: linear-gradient(135deg, var(--accent), var(--accent-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-sub {
            font-size: clamp(1.05rem, 2vw, 1.3rem);
            color: rgba(255, 255, 255, 0.75);
            max-width: 600px;
            line-height: 1.7;
            margin: 20px 0 32px;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 16px 36px;
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            color: #fff;
            font-weight: 700;
            font-size: 1.05rem;
            border-radius: 60px;
            box-shadow: 0 8px 30px rgba(232, 168, 56, 0.35);
            transition: var(--transition);
        }
        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 14px 40px rgba(232, 168, 56, 0.45);
        }
        .btn-primary:active {
            transform: translateY(0);
        }
        .btn-outline-light {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 16px 32px;
            background: transparent;
            color: #fff;
            font-weight: 600;
            font-size: 1.05rem;
            border-radius: 60px;
            border: 2px solid rgba(255, 255, 255, 0.25);
            transition: var(--transition);
        }
        .btn-outline-light:hover {
            border-color: var(--accent);
            color: var(--accent);
            background: rgba(232, 168, 56, 0.08);
        }
        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 32px 48px;
            margin-top: 48px;
            padding-top: 32px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }
        .stat-item .stat-number {
            font-size: 2.2rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.02em;
        }
        .stat-item .stat-number span {
            color: var(--accent);
        }
        .stat-item .stat-label {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.5);
            margin-top: 2px;
        }

        /* Sections */
        .section-pad {
            padding: 90px 0;
        }
        @media (max-width: 768px) {
            .section-pad {
                padding: 60px 0;
            }
        }
        .section-title {
            font-size: clamp(1.8rem, 4vw, 2.8rem);
            font-weight: 800;
            color: var(--text-dark);
            letter-spacing: -0.02em;
            line-height: 1.2;
        }
        .section-sub {
            font-size: 1.05rem;
            color: var(--text-light);
            max-width: 640px;
            margin: 12px auto 0;
            line-height: 1.7;
        }
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 18px;
            background: rgba(232, 168, 56, 0.10);
            border-radius: 50px;
            color: var(--accent-dark);
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 16px;
        }

        /* Cards */
        .feature-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 36px 28px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: transparent;
        }
        .feature-card .icon-wrap {
            width: 56px;
            height: 56px;
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: #fff;
            margin-bottom: 18px;
        }
        .feature-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 8px;
        }
        .feature-card p {
            font-size: 0.95rem;
            color: var(--text-light);
            line-height: 1.6;
        }

        /* Sport types */
        .sport-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
            gap: 24px;
        }
        .sport-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 28px 16px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
            cursor: default;
        }
        .sport-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: var(--accent);
        }
        .sport-item .sport-icon {
            font-size: 2.4rem;
            color: var(--primary);
            margin-bottom: 12px;
        }
        .sport-item h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-dark);
        }
        .sport-item .sport-count {
            font-size: 0.8rem;
            color: var(--text-light);
            margin-top: 4px;
        }

        /* Steps */
        .step-card {
            display: flex;
            gap: 20px;
            align-items: flex-start;
            padding: 28px 24px;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .step-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateX(4px);
        }
        .step-number {
            flex-shrink: 0;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent), var(--accent-dark));
            color: #fff;
            font-weight: 800;
            font-size: 1.2rem;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .step-card h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 4px;
        }
        .step-card p {
            font-size: 0.92rem;
            color: var(--text-light);
            line-height: 1.6;
        }

        /* Evidence / Numbers */
        .evidence-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 30px;
        }
        .evidence-item {
            text-align: center;
            padding: 32px 16px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: var(--radius-md);
            border: 1px solid rgba(255, 255, 255, 0.08);
            backdrop-filter: blur(4px);
            transition: var(--transition);
        }
        .evidence-item:hover {
            background: rgba(255, 255, 255, 0.10);
            transform: translateY(-4px);
        }
        .evidence-item .ev-number {
            font-size: 3rem;
            font-weight: 800;
            color: var(--accent);
            line-height: 1;
        }
        .evidence-item .ev-label {
            font-size: 0.95rem;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 8px;
        }

        /* FAQ */
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            width: 100%;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 24px;
            background: transparent;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-dark);
            text-align: left;
            gap: 16px;
        }
        .faq-question i {
            font-size: 1.1rem;
            color: var(--accent);
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-question.open i {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px;
            font-size: 0.95rem;
            color: var(--text-light);
            line-height: 1.7;
        }
        .faq-answer.open {
            max-height: 300px;
            padding: 0 24px 20px;
        }

        /* CTA */
        .cta-section {
            background: var(--bg-dark);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.webp') center center / cover no-repeat;
            opacity: 0.12;
        }
        .cta-card {
            position: relative;
            z-index: 2;
            background: linear-gradient(135deg, rgba(232, 168, 56, 0.10), rgba(232, 168, 56, 0.02));
            border: 1px solid rgba(232, 168, 56, 0.20);
            border-radius: var(--radius-lg);
            padding: 56px 40px;
            backdrop-filter: blur(8px);
        }
        @media (max-width: 640px) {
            .cta-card {
                padding: 36px 20px;
            }
        }
        .cta-card h2 {
            font-size: clamp(1.6rem, 4vw, 2.4rem);
            font-weight: 800;
            color: #fff;
        }
        .cta-card p {
            color: rgba(255, 255, 255, 0.65);
            font-size: 1.05rem;
            max-width: 560px;
            margin: 12px auto 28px;
        }

        /* Footer */
        .footer {
            background: var(--bg-dark);
            border-top: 1px solid rgba(255, 255, 255, 0.05);
        }
        .footer-title {
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.03em;
        }
        .footer-link {
            display: block;
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.5);
            padding: 5px 0;
            transition: var(--transition);
        }
        .footer-link:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .footer-divider {
            border: none;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            margin: 36px 0 24px;
        }
        .footer-bottom {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.35);
        }

        /* Responsive extras */
        @media (max-width: 768px) {
            .hero-section {
                min-height: 70vh;
                padding: 100px 0 60px;
            }
            .hero-stats {
                gap: 20px 32px;
            }
            .stat-item .stat-number {
                font-size: 1.6rem;
            }
            .sport-grid {
                grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
                gap: 16px;
            }
            .step-card {
                flex-direction: column;
                gap: 12px;
            }
            .step-number {
                width: 40px;
                height: 40px;
                font-size: 1rem;
            }
        }
        @media (max-width: 480px) {
            .hero-actions {
                flex-direction: column;
                width: 100%;
            }
            .hero-actions .btn-primary,
            .hero-actions .btn-outline-light {
                width: 100%;
                justify-content: center;
            }
            .evidence-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .evidence-item .ev-number {
                font-size: 2.2rem;
            }
        }