/* roulang page: index */
:root {
            --brand-500: #5c7cfa;
            --brand-600: #4c6ef5;
            --brand-700: #4263eb;
            --accent-500: #ff922b;
            --radius-sm: 0.5rem;
            --radius-md: 0.75rem;
            --radius-lg: 1rem;
            --radius-xl: 1.5rem;
            --shadow-card: 0 2px 12px rgba(0, 0, 0, 0.06), 0 1px 4px rgba(0, 0, 0, 0.04);
            --shadow-hover: 0 12px 40px rgba(0, 0, 0, 0.10), 0 4px 16px rgba(0, 0, 0, 0.06);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        * {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Inter', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            line-height: 1.6;
            background: #f8fafc;
            color: #1e293b;
            margin: 0;
            padding: 0;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input {
            font-family: inherit;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.25rem;
        }
        .container-narrow {
            max-width: 900px;
            margin: 0 auto;
            padding: 0 1.25rem;
        }
        .glass-nav {
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(16px) saturate(180%);
            -webkit-backdrop-filter: blur(16px) saturate(180%);
            border: 1px solid rgba(255, 255, 255, 0.3);
            box-shadow: var(--shadow-card);
        }
        .glass-nav.scrolled {
            background: rgba(255, 255, 255, 0.95);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.08);
        }
        .nav-link {
            position: relative;
            font-weight: 500;
            padding: 0.5rem 1rem;
            border-radius: 2rem;
            transition: var(--transition);
            color: #475569;
        }
        .nav-link:hover {
            color: var(--brand-600);
            background: rgba(92, 124, 250, 0.08);
        }
        .nav-link.active {
            color: #fff;
            background: linear-gradient(135deg, var(--brand-600), var(--brand-700));
            box-shadow: 0 4px 14px rgba(76, 110, 245, 0.35);
        }
        .nav-link.active:hover {
            color: #fff;
            background: linear-gradient(135deg, var(--brand-500), var(--brand-600));
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.75rem 2rem;
            border-radius: 2rem;
            font-weight: 600;
            font-size: 0.95rem;
            background: linear-gradient(135deg, var(--brand-600), var(--brand-700));
            color: #fff;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: 0 4px 16px rgba(76, 110, 245, 0.30);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(76, 110, 245, 0.40);
            background: linear-gradient(135deg, var(--brand-500), var(--brand-600));
        }
        .btn-primary:active {
            transform: translateY(0);
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.75rem 2rem;
            border-radius: 2rem;
            font-weight: 600;
            font-size: 0.95rem;
            background: #fff;
            color: var(--brand-600);
            border: 2px solid var(--brand-200);
            cursor: pointer;
            transition: var(--transition);
        }
        .btn-secondary:hover {
            border-color: var(--brand-500);
            background: rgba(92, 124, 250, 0.05);
            transform: translateY(-2px);
            box-shadow: 0 4px 16px rgba(76, 110, 245, 0.12);
        }
        .btn-accent {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.75rem 2rem;
            border-radius: 2rem;
            font-weight: 600;
            font-size: 0.95rem;
            background: linear-gradient(135deg, #ff922b, #fd7e14);
            color: #fff;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: 0 4px 16px rgba(255, 146, 43, 0.30);
        }
        .btn-accent:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(255, 146, 43, 0.40);
        }
        .card {
            background: #fff;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            transition: var(--transition);
            border: 1px solid rgba(0, 0, 0, 0.04);
        }
        .card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .badge {
            display: inline-block;
            padding: 0.2rem 0.8rem;
            border-radius: 2rem;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.02em;
            background: rgba(92, 124, 250, 0.10);
            color: var(--brand-600);
        }
        .badge-accent {
            background: rgba(255, 146, 43, 0.12);
            color: #e8590c;
        }
        .badge-green {
            background: rgba(16, 185, 129, 0.12);
            color: #047857;
        }
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            line-height: 1.25;
            color: #0f172a;
            letter-spacing: -0.01em;
        }
        .section-sub {
            font-size: 1.05rem;
            color: #64748b;
            max-width: 600px;
            line-height: 1.7;
        }
        .hero-gradient {
            background: linear-gradient(145deg, #0b1a3a 0%, #1a2d5e 40%, #2a3f7a 100%);
        }
        .hero-overlay {
            position: relative;
            background-blend-mode: overlay;
        }
        .stat-number {
            font-size: 2.5rem;
            font-weight: 800;
            line-height: 1;
            background: linear-gradient(135deg, var(--brand-500), var(--brand-700));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .faq-item {
            border-bottom: 1px solid #e9edf2;
            padding: 1.25rem 0;
        }
        .faq-item:last-child {
            border-bottom: none;
        }
        .faq-question {
            font-weight: 600;
            font-size: 1.05rem;
            color: #0f172a;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            user-select: none;
        }
        .faq-question i {
            transition: transform 0.3s ease;
            color: #94a3b8;
        }
        .faq-question.open i {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.3s ease;
            color: #475569;
            line-height: 1.7;
        }
        .faq-answer.open {
            max-height: 300px;
            padding-top: 0.75rem;
        }
        .tag {
            display: inline-block;
            padding: 0.25rem 0.9rem;
            border-radius: 2rem;
            font-size: 0.8rem;
            font-weight: 500;
            background: #f1f4f9;
            color: #475569;
            transition: var(--transition);
            border: 1px solid transparent;
        }
        .tag:hover {
            background: #e2e8f0;
            color: #0f172a;
        }
        .tag-active {
            background: var(--brand-600);
            color: #fff;
        }
        .tag-active:hover {
            background: var(--brand-700);
            color: #fff;
        }
        .footer-link {
            color: #94a3b8;
            transition: var(--transition);
            font-size: 0.9rem;
        }
        .footer-link:hover {
            color: #e2e8f0;
        }
        .mobile-menu {
            display: none;
            background: rgba(255, 255, 255, 0.98);
            backdrop-filter: blur(12px);
            border-radius: var(--radius-lg);
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.12);
            padding: 1.25rem;
            position: absolute;
            top: calc(100% + 0.75rem);
            left: 1rem;
            right: 1rem;
            z-index: 100;
            border: 1px solid rgba(0, 0, 0, 0.05);
        }
        .mobile-menu.open {
            display: block;
        }
        .mobile-menu a {
            display: block;
            padding: 0.7rem 1rem;
            border-radius: var(--radius-sm);
            font-weight: 500;
            color: #334155;
            transition: var(--transition);
        }
        .mobile-menu a:hover {
            background: rgba(92, 124, 250, 0.08);
            color: var(--brand-600);
        }
        .mobile-menu a.active-mobile {
            background: var(--brand-600);
            color: #fff;
        }
        .timeline-dot {
            width: 14px;
            height: 14px;
            border-radius: 50%;
            background: var(--brand-500);
            border: 3px solid #fff;
            box-shadow: 0 0 0 3px rgba(92, 124, 250, 0.2);
            flex-shrink: 0;
        }
        @media (max-width: 768px) {
            .section-title {
                font-size: 1.6rem;
            }
            .stat-number {
                font-size: 2rem;
            }
            .container {
                padding: 0 1rem;
            }
            .hero-gradient {
                background: linear-gradient(155deg, #0b1a3a 0%, #1a2d5e 60%, #2a3f7a 100%);
            }
        }
        @media (max-width: 520px) {
            .section-title {
                font-size: 1.35rem;
            }
            .btn-primary,
            .btn-secondary,
            .btn-accent {
                padding: 0.6rem 1.4rem;
                font-size: 0.85rem;
            }
            .stat-number {
                font-size: 1.7rem;
            }
        }
        @media (min-width: 769px) {
            .desktop-nav {
                display: flex !important;
            }
            .mobile-toggle {
                display: none !important;
            }
        }
        .animate-fade-in {
            animation: fadeIn 0.8s ease forwards;
        }
        @keyframes fadeIn {
            0% {
                opacity: 0;
                transform: translateY(20px);
            }
            100% {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .animate-delay-1 {
            animation-delay: 0.1s;
        }
        .animate-delay-2 {
            animation-delay: 0.2s;
        }
        .animate-delay-3 {
            animation-delay: 0.3s;
        }
        .animate-delay-4 {
            animation-delay: 0.4s;
        }
        .hero-pattern {
            background-image: radial-gradient(circle at 20% 50%, rgba(92, 124, 250, 0.15) 0%, transparent 60%),
                radial-gradient(circle at 80% 30%, rgba(255, 146, 43, 0.08) 0%, transparent 50%);
        }
        .img-cover {
            object-fit: cover;
            width: 100%;
            height: 100%;
        }
        .list-check li {
            position: relative;
            padding-left: 1.75rem;
            margin-bottom: 0.6rem;
        }
        .list-check li::before {
            content: '\f00c';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            position: absolute;
            left: 0;
            color: var(--brand-500);
            font-size: 0.85rem;
        }
        .cms-card-img {
            height: 180px;
            background-size: cover;
            background-position: center;
            border-radius: var(--radius-md) var(--radius-md) 0 0;
        }
        @media (max-width: 640px) {
            .cms-card-img {
                height: 140px;
            }
        }

/* roulang page: article */
:root {
            --brand-50: #f0f4ff;
            --brand-100: #dbe4ff;
            --brand-200: #bac8ff;
            --brand-300: #91a7ff;
            --brand-400: #748ffc;
            --brand-500: #5c7cfa;
            --brand-600: #4c6ef5;
            --brand-700: #4263eb;
            --brand-800: #3b5bdb;
            --brand-900: #364fc7;
            --glass-bg: rgba(255, 255, 255, 0.72);
            --glass-border: rgba(255, 255, 255, 0.18);
            --shadow-glass: 0 8px 32px rgba(0, 0, 0, 0.06);
            --radius-card: 1rem;
            --radius-btn: 0.75rem;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'Inter', 'Noto Sans SC', ui-sans-serif, system-ui, sans-serif;
            background: #f8fafc;
            color: #1e293b;
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.25rem;
        }

        @media (min-width: 768px) {
            .container {
                padding: 0 2rem;
            }
        }

        @media (min-width: 1024px) {
            .container {
                padding: 0 2.5rem;
            }
        }

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

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

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

        input {
            font: inherit;
        }

        .glass-nav {
            background: var(--glass-bg);
            backdrop-filter: blur(20px) saturate(180%);
            -webkit-backdrop-filter: blur(20px) saturate(180%);
            border: 1px solid var(--glass-border);
            box-shadow: var(--shadow-glass);
            transition: var(--transition);
        }

        .glass-nav:hover {
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.08);
        }

        .nav-link {
            position: relative;
            padding: 0.5rem 1rem;
            border-radius: 0.5rem;
            font-size: 0.875rem;
            font-weight: 500;
            color: #475569;
            transition: var(--transition);
        }

        .nav-link:hover {
            color: var(--brand-700);
            background: rgba(76, 110, 245, 0.06);
        }

        .nav-link.active {
            color: #fff;
            background: linear-gradient(135deg, var(--brand-500), var(--brand-700));
            box-shadow: 0 4px 12px rgba(76, 110, 245, 0.25);
        }

        .nav-link.active:hover {
            background: linear-gradient(135deg, var(--brand-600), var(--brand-800));
            box-shadow: 0 6px 20px rgba(76, 110, 245, 0.35);
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.625rem 1.5rem;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 0.9rem;
            color: #fff;
            background: linear-gradient(135deg, var(--brand-500), var(--brand-700));
            box-shadow: 0 4px 14px rgba(76, 110, 245, 0.25);
            transition: var(--transition);
            border: none;
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(76, 110, 245, 0.35);
            background: linear-gradient(135deg, var(--brand-600), var(--brand-800));
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(76, 110, 245, 0.2);
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.625rem 1.5rem;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--brand-700);
            background: rgba(76, 110, 245, 0.08);
            border: 1px solid rgba(76, 110, 245, 0.15);
            transition: var(--transition);
        }

        .btn-secondary:hover {
            background: rgba(76, 110, 245, 0.15);
            border-color: rgba(76, 110, 245, 0.25);
            transform: translateY(-1px);
        }

        .mobile-menu {
            display: none;
            position: absolute;
            top: calc(100% + 0.5rem);
            left: 1rem;
            right: 1rem;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(20px) saturate(180%);
            -webkit-backdrop-filter: blur(20px) saturate(180%);
            border: 1px solid rgba(255, 255, 255, 0.3);
            border-radius: 1rem;
            padding: 1rem;
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.12);
            z-index: 100;
        }

        .mobile-menu.open {
            display: block;
            animation: slideDown 0.25s ease-out;
        }

        .mobile-menu a {
            display: flex;
            align-items: center;
            padding: 0.75rem 1rem;
            border-radius: 0.75rem;
            font-weight: 500;
            color: #334155;
            transition: var(--transition);
        }

        .mobile-menu a:hover {
            background: rgba(76, 110, 245, 0.06);
            color: var(--brand-700);
        }

        .mobile-menu a.active-mobile {
            background: linear-gradient(135deg, var(--brand-500), var(--brand-700));
            color: #fff;
        }

        @keyframes slideDown {
            from {
                opacity: 0;
                transform: translateY(-8px) scale(0.98);
            }
            to {
                opacity: 1;
                transform: translateY(0) scale(1);
            }
        }

        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .animate-fade-up {
            animation: fadeInUp 0.6s ease-out forwards;
        }

        .article-content {
            font-size: 1.0625rem;
            line-height: 1.85;
            color: #1e293b;
        }

        .article-content h2 {
            font-size: 1.5rem;
            font-weight: 700;
            margin-top: 2rem;
            margin-bottom: 0.75rem;
            color: #0f172a;
        }

        .article-content h3 {
            font-size: 1.25rem;
            font-weight: 600;
            margin-top: 1.5rem;
            margin-bottom: 0.5rem;
            color: #1e293b;
        }

        .article-content p {
            margin-bottom: 1.25rem;
        }

        .article-content ul,
        .article-content ol {
            margin-bottom: 1.25rem;
            padding-left: 1.5rem;
        }

        .article-content li {
            margin-bottom: 0.5rem;
        }

        .article-content a {
            color: var(--brand-600);
            text-decoration: underline;
            text-underline-offset: 2px;
        }

        .article-content a:hover {
            color: var(--brand-800);
        }

        .article-content blockquote {
            border-left: 4px solid var(--brand-400);
            padding: 0.75rem 1.25rem;
            margin: 1.5rem 0;
            background: rgba(76, 110, 245, 0.04);
            border-radius: 0 0.5rem 0.5rem 0;
            font-style: italic;
            color: #475569;
        }

        .article-content img {
            border-radius: 0.75rem;
            margin: 1.5rem 0;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
        }

        .article-content code {
            background: #f1f5f9;
            padding: 0.2em 0.4em;
            border-radius: 0.25rem;
            font-size: 0.9em;
            color: #e11d48;
        }

        .article-content pre {
            background: #0f172a;
            color: #e2e8f0;
            padding: 1.25rem;
            border-radius: 0.75rem;
            overflow-x: auto;
            margin: 1.5rem 0;
            font-size: 0.9rem;
        }

        .badge-category {
            display: inline-flex;
            align-items: center;
            padding: 0.25rem 0.75rem;
            border-radius: 2rem;
            font-size: 0.75rem;
            font-weight: 600;
            background: rgba(76, 110, 245, 0.1);
            color: var(--brand-700);
            border: 1px solid rgba(76, 110, 245, 0.12);
        }

        .footer-link {
            color: #94a3b8;
            transition: var(--transition);
            position: relative;
        }

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

        .footer-link::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 1px;
            background: var(--brand-400);
            transition: var(--transition);
        }

        .footer-link:hover::after {
            width: 100%;
        }

        .breadcrumb-item {
            color: #64748b;
            font-size: 0.85rem;
            transition: var(--transition);
        }

        .breadcrumb-item:hover {
            color: var(--brand-600);
        }

        .breadcrumb-item.active {
            color: #1e293b;
            font-weight: 600;
        }

        .tag-pill {
            display: inline-flex;
            align-items: center;
            padding: 0.3rem 0.9rem;
            border-radius: 2rem;
            font-size: 0.8rem;
            font-weight: 500;
            background: #f1f5f9;
            color: #475569;
            border: 1px solid #e2e8f0;
            transition: var(--transition);
        }

        .tag-pill:hover {
            background: var(--brand-50);
            border-color: var(--brand-200);
            color: var(--brand-700);
        }

        .card-hover {
            transition: var(--transition);
        }

        .card-hover:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.08);
        }

        @media (max-width: 767px) {
            .desktop-nav {
                display: none !important;
            }
            .mobile-toggle {
                display: flex !important;
            }
            .container {
                padding: 0 1rem;
            }
            .article-content {
                font-size: 1rem;
            }
            .article-content h2 {
                font-size: 1.25rem;
            }
            .article-content h3 {
                font-size: 1.1rem;
            }
        }

        @media (min-width: 768px) {
            .desktop-nav {
                display: flex !important;
            }
            .mobile-toggle {
                display: none !important;
            }
            .mobile-menu {
                display: none !important;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 0.75rem;
            }
            .article-content {
                font-size: 0.95rem;
            }
            .article-content h2 {
                font-size: 1.15rem;
            }
            .article-content blockquote {
                padding: 0.5rem 1rem;
            }
        }

        .prose-img {
            border-radius: 0.75rem;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
        }

        .share-btn {
            width: 2.5rem;
            height: 2.5rem;
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: #f1f5f9;
            color: #64748b;
            transition: var(--transition);
            border: none;
            cursor: pointer;
        }

        .share-btn:hover {
            background: var(--brand-500);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(76, 110, 245, 0.3);
        }

        .skeleton-pulse {
            background: linear-gradient(90deg, #f1f5f9 25%, #e2e8f0 50%, #f1f5f9 75%);
            background-size: 200% 100%;
            animation: pulse 1.5s ease-in-out infinite;
            border-radius: 0.5rem;
        }

        @keyframes pulse {
            0% {
                background-position: 200% 0;
            }
            100% {
                background-position: -200% 0;
            }
        }

        .hero-overlay {
            position: relative;
        }

        .hero-overlay::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 23, 42, 0.6) 0%, rgba(15, 23, 42, 0.3) 100%);
            border-radius: inherit;
            z-index: 1;
        }

        .hero-overlay>* {
            position: relative;
            z-index: 2;
        }

        .related-card {
            transition: var(--transition);
        }

        .related-card:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
        }

        .related-card img {
            transition: transform 0.4s ease;
        }

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

/* roulang page: category1 */
:root {
            --brand-50: #f0f4ff;
            --brand-100: #dbe4ff;
            --brand-200: #bac8ff;
            --brand-300: #91a7ff;
            --brand-400: #748ffc;
            --brand-500: #5c7cfa;
            --brand-600: #4c6ef5;
            --brand-700: #4263eb;
            --brand-800: #3b5bdb;
            --brand-900: #364fc7;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            line-height: 1.6;
            background: #f8fafc;
            color: #1e293b;
        }
        /* 悬浮胶囊导航玻璃效果 */
        .glass-nav {
            background: rgba(255, 255, 255, 0.78);
            backdrop-filter: blur(18px) saturate(1.2);
            -webkit-backdrop-filter: blur(18px) saturate(1.2);
            border: 1px solid rgba(255, 255, 255, 0.5);
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.06);
        }
        .nav-link {
            position: relative;
            padding: 0.5rem 1.2rem;
            border-radius: 999px;
            font-size: 0.9rem;
            font-weight: 500;
            color: #475569;
            transition: all 0.25s ease;
        }
        .nav-link:hover {
            background: rgba(92, 124, 250, 0.08);
            color: var(--brand-700);
        }
        .nav-link.active {
            background: linear-gradient(135deg, #5c7cfa, #4263eb);
            color: #fff;
            box-shadow: 0 4px 14px rgba(76, 110, 245, 0.30);
        }
        .nav-link.active:hover {
            background: linear-gradient(135deg, #4c6ef5, #3b5bdb);
            color: #fff;
        }
        .mobile-menu {
            display: none;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-radius: 24px;
            padding: 1.2rem 1.5rem;
            margin-top: 0.6rem;
            box-shadow: 0 20px 50px rgba(0, 0, 0, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.6);
        }
        .mobile-menu.open {
            display: block;
        }
        .mobile-menu a {
            display: flex;
            align-items: center;
            padding: 0.7rem 1rem;
            border-radius: 14px;
            font-size: 0.95rem;
            font-weight: 500;
            color: #334155;
            transition: background 0.2s;
        }
        .mobile-menu a:hover {
            background: rgba(92, 124, 250, 0.08);
        }
        .mobile-menu a.active-mobile {
            background: rgba(92, 124, 250, 0.12);
            color: var(--brand-700);
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: linear-gradient(135deg, #5c7cfa, #4263eb);
            color: #fff;
            font-weight: 600;
            border-radius: 999px;
            padding: 0.7rem 1.6rem;
            font-size: 0.9rem;
            border: none;
            box-shadow: 0 4px 14px rgba(76, 110, 245, 0.25);
            transition: all 0.25s ease;
            cursor: pointer;
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(76, 110, 245, 0.35);
            background: linear-gradient(135deg, #4c6ef5, #3b5bdb);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(76, 110, 245, 0.20);
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: transparent;
            color: var(--brand-700);
            font-weight: 600;
            border-radius: 999px;
            padding: 0.6rem 1.4rem;
            font-size: 0.9rem;
            border: 2px solid var(--brand-400);
            transition: all 0.25s ease;
            cursor: pointer;
        }
        .btn-outline:hover {
            background: var(--brand-50);
            border-color: var(--brand-600);
            color: var(--brand-800);
            transform: translateY(-1px);
        }
        .footer-link {
            color: #94a3b8;
            transition: color 0.2s ease;
        }
        .footer-link:hover {
            color: #e2e8f0;
        }
        .card-shadow {
            transition: all 0.3s ease;
        }
        .card-shadow:hover {
            transform: translateY(-4px);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.06);
        }
        .step-line {
            position: relative;
        }
        .step-line::before {
            content: '';
            position: absolute;
            left: 1.15rem;
            top: 2.8rem;
            bottom: -0.5rem;
            width: 2px;
            background: linear-gradient(to bottom, #cbd5e1, #e2e8f0);
        }
        .step-line:last-child::before {
            display: none;
        }
        .faq-item summary {
            list-style: none;
            cursor: pointer;
            transition: color 0.2s;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item[open] summary {
            color: var(--brand-700);
        }
        .faq-item[open] .fa-chevron-down {
            transform: rotate(180deg);
            color: var(--brand-600);
        }
        .hero-overlay {
            background: linear-gradient(135deg, rgba(15, 23, 42, 0.60) 0%, rgba(30, 41, 59, 0.40) 100%);
        }
        .ticket-card {
            background: #fff;
            border-radius: 20px;
            border: 1px solid #e9edf4;
            transition: all 0.3s ease;
        }
        .ticket-card:hover {
            border-color: var(--brand-300);
            box-shadow: 0 16px 40px rgba(76, 110, 245, 0.08);
            transform: translateY(-3px);
        }
        .stat-item {
            background: #fff;
            border-radius: 20px;
            padding: 1.8rem 1.2rem;
            border: 1px solid #e9edf4;
            transition: all 0.3s ease;
        }
        .stat-item:hover {
            border-color: var(--brand-200);
            box-shadow: 0 12px 32px rgba(76, 110, 245, 0.06);
        }
        @media (max-width: 768px) {
            .desktop-nav {
                display: none !important;
            }
            .mobile-toggle {
                display: flex !important;
            }
            .step-line::before {
                left: 0.9rem;
            }
        }
        @media (min-width: 769px) {
            .mobile-toggle {
                display: none !important;
            }
            .mobile-menu {
                display: none !important;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding-left: 1rem;
                padding-right: 1rem;
            }
            .hero-title {
                font-size: 1.8rem !important;
                line-height: 1.3 !important;
            }
        }

/* roulang page: category2 */
:root {
            --brand-50: #f0f7ff;
            --brand-100: #e0effe;
            --brand-200: #baddfd;
            --brand-300: #7ec2fc;
            --brand-400: #3aa3f8;
            --brand-500: #1a7de8;
            --brand-600: #0e62c7;
            --brand-700: #114ea1;
            --brand-800: #144385;
            --brand-900: #17396e;
            --brand-950: #10244a;
            --accent-400: #f97316;
            --accent-500: #ea580c;
            --accent-600: #d14b00;
            --slate-50: #f8fafc;
            --slate-100: #f1f5f9;
            --slate-200: #e2e8f0;
            --slate-300: #cbd5e1;
            --slate-400: #94a3b8;
            --slate-500: #64748b;
            --slate-600: #475569;
            --slate-700: #334155;
            --slate-800: #1e293b;
            --slate-900: #0f172a;
            --radius: 12px;
            --radius-lg: 20px;
            --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.06);
            --shadow-hover: 0 12px 40px rgba(0, 0, 0, 0.10);
            --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', 'Segoe UI', system-ui, -apple-system, sans-serif;
            background: var(--slate-50);
            color: var(--slate-800);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }

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

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

        /* ===== Glass Nav ===== */
        .glass-nav {
            background: rgba(255, 255, 255, 0.75);
            backdrop-filter: blur(18px) saturate(1.4);
            border: 1px solid rgba(255, 255, 255, 0.5);
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.06);
        }

        .nav-link {
            position: relative;
            padding: 8px 18px;
            border-radius: 40px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--slate-600);
            transition: var(--transition);
            text-decoration: none;
        }
        .nav-link:hover {
            background: rgba(26, 125, 232, 0.08);
            color: var(--brand-600);
        }
        .nav-link.active {
            background: var(--brand-500);
            color: #fff;
            box-shadow: 0 4px 12px rgba(26, 125, 232, 0.30);
        }
        .nav-link.active:hover {
            background: var(--brand-600);
            color: #fff;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 24px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 0.9rem;
            background: linear-gradient(135deg, var(--brand-500), var(--brand-700));
            color: #fff;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: 0 4px 14px rgba(26, 125, 232, 0.25);
            text-decoration: none;
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(26, 125, 232, 0.35);
            background: linear-gradient(135deg, var(--brand-600), var(--brand-800));
        }
        .btn-primary:active {
            transform: translateY(0);
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 24px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 0.9rem;
            border: 2px solid var(--brand-500);
            color: var(--brand-600);
            background: transparent;
            cursor: pointer;
            transition: var(--transition);
            text-decoration: none;
        }
        .btn-outline:hover {
            background: var(--brand-500);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(26, 125, 232, 0.20);
        }

        /* mobile */
        .mobile-menu {
            display: none;
            position: absolute;
            top: calc(100% + 8px);
            left: 16px;
            right: 16px;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(20px);
            border-radius: 20px;
            padding: 20px 16px;
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.6);
            flex-direction: column;
            gap: 6px;
        }
        .mobile-menu.open {
            display: flex;
        }
        .mobile-menu a {
            padding: 10px 14px;
            border-radius: 12px;
            font-weight: 500;
            color: var(--slate-700);
            transition: var(--transition);
            text-decoration: none;
            display: flex;
            align-items: center;
        }
        .mobile-menu a:hover {
            background: var(--brand-50);
            color: var(--brand-600);
        }
        .mobile-menu a.active-mobile {
            background: var(--brand-500);
            color: #fff;
        }

        /* ===== Hero Banner ===== */
        .hero-banner {
            position: relative;
            min-height: 320px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, #0f172a 0%, #1a3a5c 50%, #0f172a 100%);
            overflow: hidden;
            padding: 120px 0 60px;
        }
        .hero-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.25;
            z-index: 0;
        }
        .hero-banner::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(26, 125, 232, 0.25) 0%, transparent 70%);
            z-index: 1;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 720px;
            padding: 0 20px;
        }

        /* ===== Cards ===== */
        .event-card {
            background: #fff;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: var(--transition);
            border: 1px solid rgba(0, 0, 0, 0.04);
            display: flex;
            flex-direction: column;
            height: 100%;
        }
        .event-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(26, 125, 232, 0.12);
        }
        .event-card .card-img {
            aspect-ratio: 16/10;
            object-fit: cover;
            width: 100%;
            transition: transform 0.5s ease;
        }
        .event-card:hover .card-img {
            transform: scale(1.03);
        }
        .event-card .card-body {
            padding: 20px 22px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .badge-hot {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 40px;
            font-size: 0.7rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            background: linear-gradient(135deg, #f97316, #ea580c);
            color: #fff;
        }
        .badge-new {
            background: linear-gradient(135deg, #10b981, #059669);
            color: #fff;
        }
        .badge-coming {
            background: linear-gradient(135deg, #8b5cf6, #7c3aed);
            color: #fff;
        }

        /* ===== Timeline ===== */
        .timeline-item {
            position: relative;
            padding-left: 40px;
            padding-bottom: 36px;
        }
        .timeline-item::before {
            content: '';
            position: absolute;
            left: 14px;
            top: 8px;
            bottom: 0;
            width: 2px;
            background: linear-gradient(to bottom, var(--brand-300), var(--brand-600));
            border-radius: 4px;
        }
        .timeline-item::after {
            content: '';
            position: absolute;
            left: 6px;
            top: 6px;
            width: 18px;
            height: 18px;
            border-radius: 50%;
            background: var(--brand-500);
            border: 4px solid #fff;
            box-shadow: 0 0 0 4px rgba(26, 125, 232, 0.15);
        }
        .timeline-item:last-child::before {
            display: none;
        }

        /* ===== Stats ===== */
        .stat-number {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.1;
            background: linear-gradient(135deg, var(--brand-400), var(--brand-700));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        /* ===== FAQ ===== */
        .faq-item {
            background: #fff;
            border-radius: 16px;
            padding: 20px 24px;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
            border: 1px solid var(--slate-100);
            transition: var(--transition);
            cursor: pointer;
        }
        .faq-item:hover {
            border-color: var(--brand-200);
            box-shadow: 0 4px 20px rgba(26, 125, 232, 0.06);
        }
        .faq-question {
            font-weight: 600;
            color: var(--slate-800);
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
        }
        .faq-question i {
            color: var(--brand-500);
            transition: transform 0.3s;
        }
        .faq-item.open .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(--slate-500);
            font-size: 0.92rem;
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding-top: 14px;
        }

        /* ===== Footer ===== */
        .footer-link {
            color: var(--slate-400);
            transition: var(--transition);
            text-decoration: none;
        }
        .footer-link:hover {
            color: #fff;
        }

        /* ===== Responsive ===== */
        @media (max-width: 768px) {
            .hero-banner {
                min-height: 240px;
                padding: 100px 0 40px;
            }
            .stat-number {
                font-size: 2.2rem;
            }
            .timeline-item {
                padding-left: 32px;
                padding-bottom: 28px;
            }
            .event-card .card-body {
                padding: 16px 18px 20px;
            }
        }

        @media (max-width: 520px) {
            .hero-banner {
                min-height: 200px;
                padding: 80px 0 32px;
            }
            .hero-content h1 {
                font-size: 1.8rem !important;
            }
            .stat-number {
                font-size: 1.8rem;
            }
            .container {
                padding-left: 14px;
                padding-right: 14px;
            }
            .faq-item {
                padding: 16px 18px;
            }
        }

        /* ===== Event filter tabs ===== */
        .filter-tab {
            padding: 8px 22px;
            border-radius: 40px;
            font-weight: 500;
            font-size: 0.85rem;
            cursor: pointer;
            transition: var(--transition);
            border: 1px solid var(--slate-200);
            background: #fff;
            color: var(--slate-600);
            user-select: none;
        }
        .filter-tab:hover {
            border-color: var(--brand-300);
            color: var(--brand-600);
            background: var(--brand-50);
        }
        .filter-tab.active-tab {
            background: var(--brand-500);
            border-color: var(--brand-500);
            color: #fff;
            box-shadow: 0 4px 12px rgba(26, 125, 232, 0.25);
        }

        /* scroll reveal */
        .reveal {
            opacity: 0;
            transform: translateY(30px);
            transition: opacity 0.6s ease, transform 0.6s ease;
        }
        .reveal.visible {
            opacity: 1;
            transform: translateY(0);
        }

        @media (prefers-reduced-motion: reduce) {
            .reveal {
                opacity: 1;
                transform: none;
            }
            .event-card,
            .btn-primary,
            .btn-outline {
                transition: none;
            }
        }