/* roulang page: index */
:root {
            --primary: #0f172a;
            --primary-light: #1e293b;
            --secondary: #2563eb;
            --accent: #f59e0b;
            --accent-light: #fbbf24;
            --bg: #f8fafc;
            --card-bg: #ffffff;
            --text-main: #1e293b;
            --text-muted: #64748b;
            --border-light: #e2e8f0;
            --radius: 0.75rem;
            --radius-lg: 1rem;
            --radius-xl: 1.25rem;
            --shadow-card: 0 4px 20px rgba(0,0,0,0.06);
            --shadow-hover: 0 12px 40px rgba(0,0,0,0.1);
            --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;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            background-color: var(--bg);
            color: var(--text-main);
            line-height: 1.7;
            font-size: 1rem;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font: inherit;
            outline: none;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            font-weight: 700;
            color: var(--primary);
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
        }
        @media (max-width: 768px) {
            .container {
                padding-left: 1rem;
                padding-right: 1rem;
            }
        }
        .section-padding {
            padding-top: 5rem;
            padding-bottom: 5rem;
        }
        @media (max-width: 768px) {
            .section-padding {
                padding-top: 3rem;
                padding-bottom: 3rem;
            }
        }
        .section-title {
            font-size: 2.25rem;
            font-weight: 800;
            margin-bottom: 0.75rem;
            letter-spacing: -0.02em;
            color: var(--primary);
        }
        .section-subtitle {
            font-size: 1.125rem;
            color: var(--text-muted);
            max-width: 640px;
            margin: 0 auto 3rem auto;
        }
        @media (max-width: 768px) {
            .section-title {
                font-size: 1.75rem;
            }
            .section-subtitle {
                font-size: 1rem;
                margin-bottom: 2rem;
            }
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: var(--secondary);
            color: #fff;
            font-weight: 600;
            padding: 0.875rem 2rem;
            border-radius: 9999px;
            box-shadow: var(--shadow-btn);
            transition: var(--transition);
            border: none;
            cursor: pointer;
            font-size: 1rem;
        }
        .btn-primary:hover {
            background: #1d4ed8;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(37,99,235,0.35);
        }
        .btn-primary:active {
            transform: translateY(0);
        }
        .btn-primary:focus-visible {
            outline: 3px solid rgba(37,99,235,0.4);
            outline-offset: 2px;
        }
        .btn-accent {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: var(--accent);
            color: #fff;
            font-weight: 600;
            padding: 0.875rem 2rem;
            border-radius: 9999px;
            box-shadow: var(--shadow-btn-accent);
            transition: var(--transition);
            border: none;
            cursor: pointer;
            font-size: 1rem;
        }
        .btn-accent:hover {
            background: #d97706;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(245,158,11,0.35);
        }
        .btn-accent:active {
            transform: translateY(0);
        }
        .btn-accent:focus-visible {
            outline: 3px solid rgba(245,158,11,0.4);
            outline-offset: 2px;
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: transparent;
            color: #fff;
            font-weight: 600;
            padding: 0.875rem 2rem;
            border-radius: 9999px;
            border: 2px solid rgba(255,255,255,0.5);
            transition: var(--transition);
            cursor: pointer;
            font-size: 1rem;
        }
        .btn-outline:hover {
            border-color: #fff;
            background: rgba(255,255,255,0.08);
            transform: translateY(-2px);
        }
        .btn-outline:active {
            transform: translateY(0);
        }
        .btn-outline:focus-visible {
            outline: 3px solid rgba(255,255,255,0.3);
            outline-offset: 2px;
        }
        .card {
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            transition: var(--transition);
            border: 1px solid var(--border-light);
            overflow: hidden;
        }
        .card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .badge {
            display: inline-flex;
            align-items: center;
            padding: 0.25rem 0.875rem;
            border-radius: 9999px;
            font-size: 0.8125rem;
            font-weight: 500;
            background: rgba(37,99,235,0.08);
            color: var(--secondary);
            border: 1px solid rgba(37,99,235,0.15);
        }
        .badge-accent {
            background: rgba(245,158,11,0.1);
            color: #b45309;
            border-color: rgba(245,158,11,0.2);
        }
        .badge-success {
            background: rgba(16,185,129,0.1);
            color: #047857;
            border-color: rgba(16,185,129,0.2);
        }
        .tag {
            display: inline-block;
            padding: 0.2rem 0.75rem;
            border-radius: 9999px;
            font-size: 0.75rem;
            font-weight: 500;
            background: var(--bg);
            color: var(--text-muted);
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .tag:hover {
            background: var(--secondary);
            color: #fff;
            border-color: var(--secondary);
        }
        .divider {
            width: 100%;
            height: 1px;
            background: var(--border-light);
            margin: 2rem 0;
        }
        .text-gradient {
            background: linear-gradient(135deg, var(--secondary), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-overlay {
            position: relative;
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
        }
        .hero-overlay::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15,23,42,0.88) 0%, rgba(15,23,42,0.70) 60%, rgba(37,99,235,0.25) 100%);
            z-index: 1;
        }
        .hero-overlay>* {
            position: relative;
            z-index: 2;
        }
        .stat-number {
            font-size: 2.75rem;
            font-weight: 800;
            line-height: 1.1;
            color: var(--primary);
        }
        @media (max-width: 768px) {
            .stat-number {
                font-size: 2rem;
            }
        }
        .step-circle {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            font-weight: 700;
            color: #fff;
            background: var(--secondary);
            flex-shrink: 0;
        }
        .faq-item {
            border-bottom: 1px solid var(--border-light);
            padding: 1.25rem 0;
        }
        .faq-item:last-child {
            border-bottom: none;
        }
        .faq-question {
            font-weight: 600;
            font-size: 1.075rem;
            color: var(--primary);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 0.5rem 0;
            transition: var(--transition);
        }
        .faq-question:hover {
            color: var(--secondary);
        }
        .faq-question i {
            font-size: 0.875rem;
            color: var(--text-muted);
            transition: var(--transition);
        }
        .faq-answer {
            color: var(--text-muted);
            line-height: 1.7;
            padding: 0.5rem 0 0.25rem 0;
            font-size: 0.975rem;
        }
        .footer-link {
            color: #94a3b8;
            transition: var(--transition);
            display: inline-block;
            padding: 0.2rem 0;
        }
        .footer-link:hover {
            color: #fff;
            transform: translateX(4px);
        }
        .nav-link {
            position: relative;
            font-weight: 500;
            padding: 0.5rem 0;
            color: #cbd5e1;
            transition: var(--transition);
        }
        .nav-link:hover {
            color: #fff;
        }
        .nav-link.active {
            color: #fff;
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
        }
        .nav-card-item {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.5rem 1.25rem;
            border-radius: 9999px;
            background: rgba(255,255,255,0.06);
            border: 1px solid rgba(255,255,255,0.1);
            color: #e2e8f0;
            font-weight: 500;
            font-size: 0.9375rem;
            transition: var(--transition);
        }
        .nav-card-item:hover {
            background: rgba(255,255,255,0.12);
            border-color: rgba(255,255,255,0.2);
            color: #fff;
            transform: translateY(-1px);
        }
        .nav-card-item.active {
            background: rgba(37,99,235,0.2);
            border-color: rgba(37,99,235,0.3);
            color: #fff;
        }
        .nav-card-item i {
            font-size: 0.875rem;
            opacity: 0.7;
        }
        .mobile-nav {
            display: none;
        }
        @media (max-width: 768px) {
            .desktop-nav {
                display: none !important;
            }
            .mobile-nav {
                display: flex;
            }
            .mobile-menu-open .mobile-nav-content {
                display: block !important;
            }
        }
        .img-cover {
            object-fit: cover;
            width: 100%;
            height: 100%;
        }
        .card-img-wrap {
            position: relative;
            overflow: hidden;
            border-radius: var(--radius-lg) var(--radius-lg) 0 0;
        }
        .card-img-wrap img {
            transition: transform 0.5s ease;
        }
        .card:hover .card-img-wrap img {
            transform: scale(1.05);
        }
        .card-img-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(15,23,42,0.6), transparent);
            opacity: 0;
            transition: var(--transition);
        }
        .card:hover .card-img-overlay {
            opacity: 1;
        }
        .grid-auto {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 1.5rem;
        }
        @media (max-width: 520px) {
            .grid-auto {
                grid-template-columns: 1fr;
            }
        }
        .fade-in {
            animation: fadeIn 0.6s ease forwards;
        }
        @keyframes fadeIn {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .stagger-1 {
            animation-delay: 0.1s;
        }
        .stagger-2 {
            animation-delay: 0.2s;
        }
        .stagger-3 {
            animation-delay: 0.3s;
        }
        .stagger-4 {
            animation-delay: 0.4s;
        }
        .scrollbar-thin::-webkit-scrollbar {
            width: 4px;
            height: 4px;
        }
        .scrollbar-thin::-webkit-scrollbar-track {
            background: transparent;
        }
        .scrollbar-thin::-webkit-scrollbar-thumb {
            background: var(--border-light);
            border-radius: 4px;
        }
        .scrollbar-thin::-webkit-scrollbar-thumb:hover {
            background: var(--text-muted);
        }
        @media (max-width: 480px) {
            .stat-grid {
                grid-template-columns: 1fr 1fr !important;
            }
            .hero-title {
                font-size: 2rem !important;
            }
            .hero-sub {
                font-size: 1.05rem !important;
            }
        }

/* roulang page: article */
/* ===== Design Variables ===== */
        :root {
            --primary: #0f172a;
            --primary-light: #1e293b;
            --secondary: #3b82f6;
            --accent: #f59e0b;
            --accent-light: #fbbf24;
            --bg-body: #0a0f1a;
            --bg-card: #131c2e;
            --bg-card-hover: #1a2640;
            --text-white: #f1f5f9;
            --text-muted: #94a3b8;
            --text-dim: #64748b;
            --border-subtle: rgba(255, 255, 255, 0.06);
            --border-card: rgba(255, 255, 255, 0.08);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.3);
            --shadow-nav: 0 4px 24px rgba(0, 0, 0, 0.4);
            --transition: 0.25s ease;
        }

        /* ===== Base Reset ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

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

        body {
            font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            background: var(--bg-body);
            color: var(--text-white);
            line-height: 1.7;
            min-height: 100vh;
        }

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

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

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

        ul,
        ol {
            list-style: none;
        }

        /* ===== Container ===== */
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        @media (min-width: 768px) {
            .container {
                padding: 0 32px;
            }
        }

        @media (min-width: 1024px) {
            .container {
                padding: 0 40px;
            }
        }

        /* ===== Scrollbar ===== */
        ::-webkit-scrollbar {
            width: 6px;
        }
        ::-webkit-scrollbar-track {
            background: var(--primary);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--secondary);
            border-radius: 3px;
        }

        /* ===== Navigation Overrides ===== */
        .nav-link {
            position: relative;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-muted);
            padding: 6px 0;
            transition: color var(--transition);
        }
        .nav-link::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--secondary), var(--accent));
            transition: width var(--transition);
            border-radius: 2px;
        }
        .nav-link:hover {
            color: var(--text-white);
        }
        .nav-link:hover::after {
            width: 100%;
        }
        .nav-link.active {
            color: var(--text-white);
        }
        .nav-link.active::after {
            width: 100%;
        }

        .nav-card-item {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-muted);
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid transparent;
            transition: all var(--transition);
        }
        .nav-card-item i {
            font-size: 1.1rem;
            color: var(--secondary);
        }
        .nav-card-item:hover {
            color: var(--text-white);
            background: rgba(59, 130, 246, 0.1);
            border-color: rgba(59, 130, 246, 0.2);
            transform: translateY(-1px);
        }
        .nav-card-item.active {
            color: var(--text-white);
            background: rgba(59, 130, 246, 0.15);
            border-color: rgba(59, 130, 246, 0.25);
        }

        .btn-accent {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-weight: 600;
            color: #0f172a;
            background: linear-gradient(135deg, var(--accent), var(--accent-light));
            padding: 10px 24px;
            border-radius: var(--radius-sm);
            transition: all var(--transition);
            box-shadow: 0 4px 16px rgba(245, 158, 11, 0.3);
        }
        .btn-accent:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(245, 158, 11, 0.4);
        }
        .btn-accent:active {
            transform: translateY(0);
        }
        .btn-accent:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 4px;
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-weight: 500;
            color: var(--text-white);
            background: transparent;
            padding: 10px 24px;
            border-radius: var(--radius-sm);
            border: 1px solid rgba(255, 255, 255, 0.15);
            transition: all var(--transition);
        }
        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.06);
            border-color: rgba(255, 255, 255, 0.25);
            transform: translateY(-1px);
        }

        /* ===== Footer Link ===== */
        .footer-link {
            color: var(--text-dim);
            transition: color var(--transition);
            position: relative;
        }
        .footer-link:hover {
            color: var(--accent-light);
        }

        /* ===== Mobile Nav ===== */
        .mobile-nav {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            border-radius: var(--radius-sm);
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.06);
            cursor: pointer;
            transition: background var(--transition);
        }
        .mobile-nav:hover {
            background: rgba(255, 255, 255, 0.08);
        }
        .mobile-nav:focus-visible {
            outline: 2px solid var(--secondary);
            outline-offset: 2px;
        }

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

        @media (max-width: 767.98px) {
            .desktop-nav {
                display: none !important;
            }
            .mobile-nav-content.show {
                display: block !important;
            }
        }

        /* ===== Article Styles ===== */
        .article-body h2 {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--text-white);
            margin-top: 2rem;
            margin-bottom: 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 1px solid var(--border-subtle);
        }

        .article-body h3 {
            font-size: 1.25rem;
            font-weight: 600;
            color: var(--text-white);
            margin-top: 1.6rem;
            margin-bottom: 0.8rem;
        }

        .article-body p {
            color: var(--text-muted);
            margin-bottom: 1.2rem;
            line-height: 1.8;
            font-size: 1.05rem;
        }

        .article-body ul,
        .article-body ol {
            color: var(--text-muted);
            margin-bottom: 1.2rem;
            padding-left: 1.6rem;
            list-style: disc;
        }

        .article-body ol {
            list-style: decimal;
        }

        .article-body li {
            margin-bottom: 0.4rem;
            line-height: 1.7;
        }

        .article-body a {
            color: var(--secondary);
            border-bottom: 1px solid transparent;
            transition: border-color var(--transition);
        }
        .article-body a:hover {
            border-color: var(--secondary);
        }

        .article-body blockquote {
            border-left: 4px solid var(--secondary);
            background: rgba(59, 130, 246, 0.06);
            padding: 1rem 1.5rem;
            margin: 1.5rem 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-muted);
            font-style: italic;
        }

        .article-body img {
            border-radius: var(--radius-md);
            margin: 1.5rem 0;
            box-shadow: var(--shadow-card);
        }

        .article-body pre {
            background: var(--bg-card);
            padding: 1.2rem;
            border-radius: var(--radius-sm);
            overflow-x: auto;
            border: 1px solid var(--border-card);
            color: var(--text-muted);
            font-size: 0.9rem;
            margin-bottom: 1.2rem;
        }

        .article-body code {
            background: rgba(255, 255, 255, 0.06);
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 0.9em;
            color: var(--accent-light);
        }

        .article-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.5rem 0;
            font-size: 0.95rem;
        }

        .article-body th,
        .article-body td {
            padding: 0.75rem 1rem;
            border: 1px solid var(--border-card);
            text-align: left;
        }

        .article-body th {
            background: var(--bg-card);
            color: var(--text-white);
            font-weight: 600;
        }

        .article-body td {
            color: var(--text-muted);
        }

        .article-body hr {
            border: none;
            height: 1px;
            background: var(--border-subtle);
            margin: 2rem 0;
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 6px;
            font-size: 0.85rem;
            color: var(--text-dim);
        }
        .breadcrumb a {
            color: var(--text-muted);
            transition: color var(--transition);
        }
        .breadcrumb a:hover {
            color: var(--accent-light);
        }
        .breadcrumb .sep {
            color: var(--text-dim);
            font-size: 0.7rem;
        }
        .breadcrumb .current {
            color: var(--text-white);
            font-weight: 500;
        }

        /* ===== Tags ===== */
        .tag {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 4px 14px;
            font-size: 0.8rem;
            font-weight: 500;
            border-radius: 20px;
            background: rgba(59, 130, 246, 0.1);
            color: var(--secondary);
            border: 1px solid rgba(59, 130, 246, 0.15);
            transition: all var(--transition);
        }
        .tag:hover {
            background: rgba(59, 130, 246, 0.18);
            transform: translateY(-1px);
        }

        .tag-accent {
            background: rgba(245, 158, 11, 0.1);
            color: var(--accent-light);
            border-color: rgba(245, 158, 11, 0.15);
        }
        .tag-accent:hover {
            background: rgba(245, 158, 11, 0.18);
        }

        /* ===== Card ===== */
        .card-glass {
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-card);
            backdrop-filter: blur(4px);
            transition: all var(--transition);
        }
        .card-glass:hover {
            border-color: rgba(255, 255, 255, 0.12);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
            transform: translateY(-2px);
        }

        /* ===== Section Title ===== */
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.8rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            color: var(--secondary);
            background: rgba(59, 130, 246, 0.08);
            padding: 4px 16px;
            border-radius: 20px;
            border: 1px solid rgba(59, 130, 246, 0.12);
        }

        /* ===== Skeleton Loading ===== */
        .skeleton {
            background: linear-gradient(90deg, var(--bg-card) 25%, var(--bg-card-hover) 50%, var(--bg-card) 75%);
            background-size: 200% 100%;
            animation: skeleton 1.8s infinite;
            border-radius: var(--radius-sm);
        }
        @keyframes skeleton {
            0% {
                background-position: 200% 0;
            }
            100% {
                background-position: -200% 0;
            }
        }

        /* ===== Focus Visible ===== */
        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--secondary);
            outline-offset: 2px;
            border-radius: 4px;
        }

        /* ===== Responsive Adjustments ===== */
        @media (max-width: 639.98px) {
            .article-body h2 {
                font-size: 1.3rem;
            }
            .article-body h3 {
                font-size: 1.1rem;
            }
            .article-body p {
                font-size: 0.95rem;
            }
            .article-body table {
                font-size: 0.8rem;
            }
            .article-body th,
            .article-body td {
                padding: 0.5rem 0.6rem;
            }
        }

        @media (min-width: 640px) and (max-width: 1023.98px) {
            .article-body h2 {
                font-size: 1.45rem;
            }
        }

        /* ===== Print ===== */
        @media print {
            header,
            footer,
            #cta-section,
            .mobile-nav,
            .mobile-nav-content {
                display: none !important;
            }
            body {
                background: #fff;
                color: #111;
            }
            .article-body {
                background: #fff;
                color: #222;
            }
            .article-body p,
            .article-body li {
                color: #333;
            }
            .card-glass {
                box-shadow: none;
                border: 1px solid #ddd;
                background: #fafafa;
            }
        }

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --primary: #0f172a;
            --primary-light: #1e293b;
            --secondary: #3b82f6;
            --secondary-dark: #2563eb;
            --accent: #f59e0b;
            --accent-dark: #d97706;
            --surface: #f8fafc;
            --card-bg: #ffffff;
            --text-primary: #0f172a;
            --text-secondary: #475569;
            --text-light: #94a3b8;
            --border-color: #e2e8f0;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 16px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.12);
            --shadow-nav: 0 2px 20px rgba(0, 0, 0, 0.15);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font: 'Inter', system-ui, -apple-system, sans-serif;
        }

        /* ===== Base Reset ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

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

        body {
            font-family: var(--font);
            background-color: var(--surface);
            color: var(--text-primary);
            line-height: 1.6;
            font-size: 16px;
            overflow-x: hidden;
        }

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

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }

        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            transition: var(--transition);
        }

        button {
            cursor: pointer;
            background: none;
        }

        ul,
        ol {
            list-style: none;
        }

        /* ===== Container ===== */
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
        }

        @media (max-width: 640px) {
            .container {
                padding-left: 1rem;
                padding-right: 1rem;
            }
        }

        /* ===== Typography ===== */
        .heading-xl {
            font-size: clamp(2.2rem, 5.5vw, 4rem);
            font-weight: 800;
            line-height: 1.1;
            letter-spacing: -0.02em;
        }
        .heading-lg {
            font-size: clamp(1.8rem, 4vw, 2.8rem);
            font-weight: 700;
            line-height: 1.2;
            letter-spacing: -0.01em;
        }
        .heading-md {
            font-size: clamp(1.3rem, 2.5vw, 1.8rem);
            font-weight: 700;
            line-height: 1.3;
        }
        .heading-sm {
            font-size: clamp(1.1rem, 1.8vw, 1.35rem);
            font-weight: 600;
            line-height: 1.4;
        }
        .body-lg {
            font-size: 1.1rem;
            line-height: 1.7;
            color: var(--text-secondary);
        }
        .body-sm {
            font-size: 0.9rem;
            line-height: 1.6;
            color: var(--text-light);
        }

        /* ===== Nav ===== */
        .nav-link {
            font-size: 0.95rem;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.7);
            padding: 0.5rem 0.75rem;
            border-radius: var(--radius-sm);
            transition: var(--transition);
            position: relative;
        }
        .nav-link:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.06);
        }
        .nav-link.active {
            color: #fff;
            background: rgba(59, 130, 246, 0.15);
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 50%;
            transform: translateX(-50%);
            width: 60%;
            height: 2px;
            background: var(--secondary);
            border-radius: 2px;
        }

        .nav-card-item {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.9rem;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.75);
            padding: 0.5rem 1rem;
            border-radius: var(--radius-sm);
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.06);
            transition: var(--transition);
        }
        .nav-card-item:hover {
            color: #fff;
            background: rgba(59, 130, 246, 0.12);
            border-color: rgba(59, 130, 246, 0.2);
            transform: translateY(-1px);
        }
        .nav-card-item i {
            font-size: 1rem;
            color: var(--accent);
        }
        .nav-card-item.active {
            background: rgba(59, 130, 246, 0.15);
            border-color: rgba(59, 130, 246, 0.25);
            color: #fff;
        }

        .btn-accent {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            font-weight: 600;
            color: #fff;
            background: linear-gradient(135deg, var(--secondary), #1d4ed8);
            padding: 0.65rem 1.5rem;
            border-radius: var(--radius-sm);
            transition: var(--transition);
            border: none;
            box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
        }
        .btn-accent:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(59, 130, 246, 0.4);
        }
        .btn-accent:active {
            transform: translateY(0);
        }
        .btn-accent:focus-visible {
            outline: 2px solid #fff;
            outline-offset: 2px;
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            font-weight: 600;
            color: var(--secondary);
            background: transparent;
            padding: 0.6rem 1.4rem;
            border-radius: var(--radius-sm);
            border: 2px solid var(--secondary);
            transition: var(--transition);
        }
        .btn-outline:hover {
            background: var(--secondary);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 4px 15px rgba(59, 130, 246, 0.2);
        }

        /* ===== Mobile Nav ===== */
        .mobile-nav {
            display: none;
        }
        @media (max-width: 768px) {
            .desktop-nav {
                display: none !important;
            }
            .mobile-nav {
                display: flex;
                align-items: center;
                justify-content: center;
            }
        }

        /* ===== Hero Section ===== */
        .hero-section {
            position: relative;
            min-height: 75vh;
            display: flex;
            align-items: center;
            padding-top: 6rem;
            padding-bottom: 4rem;
            overflow: hidden;
            background: var(--primary);
        }
        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.2;
            z-index: 0;
        }
        .hero-section::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(59, 130, 246, 0.15) 0%, transparent 60%),
                radial-gradient(ellipse at 70% 50%, rgba(245, 158, 11, 0.08) 0%, transparent 50%);
            z-index: 1;
        }
        .hero-section .container {
            position: relative;
            z-index: 2;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: rgba(59, 130, 246, 0.15);
            border: 1px solid rgba(59, 130, 246, 0.2);
            padding: 0.4rem 1rem;
            border-radius: 50px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(4px);
        }
        .hero-badge i {
            color: var(--accent);
        }

        /* ===== Card ===== */
        .card {
            background: var(--card-bg);
            border-radius: var(--radius);
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            overflow: hidden;
        }
        .card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
        }
        .card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            border-radius: var(--radius) var(--radius) 0 0;
        }
        .card-body {
            padding: 1.5rem;
        }
        .card-tag {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.04em;
            padding: 0.2rem 0.7rem;
            border-radius: 50px;
            background: rgba(59, 130, 246, 0.08);
            color: var(--secondary);
        }
        .card-tag.amber {
            background: rgba(245, 158, 11, 0.08);
            color: var(--accent-dark);
        }
        .card-tag.emerald {
            background: rgba(16, 185, 129, 0.08);
            color: #059669;
        }

        /* ===== Stat Block ===== */
        .stat-number {
            font-size: clamp(2.2rem, 4vw, 3.2rem);
            font-weight: 800;
            line-height: 1;
            background: linear-gradient(135deg, var(--secondary), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        /* ===== Timeline ===== */
        .timeline-item {
            position: relative;
            padding-left: 2.5rem;
            padding-bottom: 2.5rem;
        }
        .timeline-item::before {
            content: '';
            position: absolute;
            left: 8px;
            top: 4px;
            bottom: 0;
            width: 2px;
            background: var(--border-color);
        }
        .timeline-item::after {
            content: '';
            position: absolute;
            left: 0;
            top: 4px;
            width: 18px;
            height: 18px;
            border-radius: 50%;
            background: var(--secondary);
            border: 3px solid var(--surface);
            box-shadow: 0 0 0 2px var(--secondary);
        }
        .timeline-item:last-child {
            padding-bottom: 0;
        }
        .timeline-item:last-child::before {
            display: none;
        }

        /* ===== FAQ ===== */
        .faq-item {
            border-bottom: 1px solid var(--border-color);
            padding: 1.2rem 0;
        }
        .faq-question {
            font-weight: 600;
            font-size: 1.05rem;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 1rem;
            color: var(--text-primary);
            transition: var(--transition);
        }
        .faq-question:hover {
            color: var(--secondary);
        }
        .faq-question i {
            font-size: 1.2rem;
            color: var(--text-light);
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-question.open i {
            transform: rotate(180deg);
            color: var(--secondary);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .faq-answer.open {
            max-height: 300px;
            padding-top: 0.8rem;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--primary);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.08;
            z-index: 0;
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
        }

        /* ===== Footer ===== */
        .footer-link {
            color: var(--text-light);
            transition: var(--transition);
            position: relative;
        }
        .footer-link:hover {
            color: #fff;
            padding-left: 4px;
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.85rem;
            color: var(--text-light);
        }
        .breadcrumb a {
            color: rgba(255, 255, 255, 0.6);
        }
        .breadcrumb a:hover {
            color: #fff;
        }
        .breadcrumb .sep {
            color: rgba(255, 255, 255, 0.3);
        }
        .breadcrumb .current {
            color: var(--accent);
        }

        /* ===== Category Grid ===== */
        .cat-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
            gap: 1.5rem;
        }
        @media (max-width: 640px) {
            .cat-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===== Tag / Badge ===== */
        .tag {
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
            font-size: 0.78rem;
            font-weight: 500;
            padding: 0.25rem 0.7rem;
            border-radius: 50px;
            background: var(--surface);
            border: 1px solid var(--border-color);
            color: var(--text-secondary);
            transition: var(--transition);
        }
        .tag:hover {
            border-color: var(--secondary);
            color: var(--secondary);
            background: rgba(59, 130, 246, 0.04);
        }
        .tag i {
            font-size: 0.7rem;
        }

        /* ===== Section Spacing ===== */
        .section-padding {
            padding-top: 5rem;
            padding-bottom: 5rem;
        }
        @media (max-width: 640px) {
            .section-padding {
                padding-top: 3rem;
                padding-bottom: 3rem;
            }
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .cat-grid {
                grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            }
        }

        @media (max-width: 768px) {
            .hero-section {
                min-height: 60vh;
                padding-top: 5rem;
                padding-bottom: 3rem;
            }
            .hero-section .heading-xl {
                font-size: clamp(1.8rem, 8vw, 2.5rem);
            }
            .cat-grid {
                grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
            }
            .stat-number {
                font-size: 2rem;
            }
        }

        @media (max-width: 520px) {
            .hero-section {
                min-height: 55vh;
                padding-top: 4.5rem;
                padding-bottom: 2rem;
            }
            .cat-grid {
                grid-template-columns: 1fr;
            }
            .section-padding {
                padding-top: 2.5rem;
                padding-bottom: 2.5rem;
            }
            .card-body {
                padding: 1.2rem;
            }
            .breadcrumb {
                font-size: 0.75rem;
            }
        }

        /* ===== Misc Utilities ===== */
        .text-gradient {
            background: linear-gradient(135deg, var(--secondary), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .bg-glass {
            background: rgba(255, 255, 255, 0.02);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.06);
        }
        .shadow-card {
            box-shadow: var(--shadow-md);
        }
        .shadow-card:hover {
            box-shadow: var(--shadow-lg);
        }
        .rounded-inherit {
            border-radius: inherit;
        }

        /* ===== Skip Link ===== */
        .skip-link {
            position: absolute;
            top: -100%;
            left: 1rem;
            background: var(--secondary);
            color: #fff;
            padding: 0.5rem 1.5rem;
            border-radius: var(--radius-sm);
            z-index: 100;
            font-weight: 600;
        }
        .skip-link:focus {
            top: 1rem;
        }

/* roulang page: category2 */
:root {
            --primary: #0f172a;
            --secondary: #3b82f6;
            --accent: #f59e0b;
            --accent-light: #fbbf24;
            --bg-dark: #0b1120;
            --bg-card: #1e293b;
            --bg-section: #0f1a2e;
            --text-light: #f1f5f9;
            --text-muted: #94a3b8;
            --text-dim: #64748b;
            --border-subtle: rgba(255, 255, 255, 0.05);
            --radius-card: 1rem;
            --radius-btn: 0.75rem;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.3);
            --shadow-nav: 0 4px 20px rgba(0, 0, 0, 0.4);
            --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, 'Noto Sans SC', sans-serif;
            background: var(--bg-dark);
            color: var(--text-light);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-card);
        }
        button {
            cursor: pointer;
            border: none;
            font-family: inherit;
            transition: var(--transition);
        }
        input,
        textarea {
            font-family: inherit;
            border: none;
            outline: none;
        }
        .container {
            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;
            }
        }

        /* ===== nav ===== */
        .desktop-nav .nav-link,
        .desktop-nav .nav-card-item {
            position: relative;
            color: var(--text-muted);
            font-size: 0.95rem;
            font-weight: 500;
            padding: 0.4rem 0.2rem;
            transition: var(--transition);
            letter-spacing: 0.3px;
        }
        .desktop-nav .nav-link::after,
        .desktop-nav .nav-card-item::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
            transition: var(--transition);
        }
        .desktop-nav .nav-link:hover,
        .desktop-nav .nav-card-item:hover,
        .desktop-nav .nav-link.active,
        .desktop-nav .nav-card-item.active {
            color: #fff;
        }
        .desktop-nav .nav-link:hover::after,
        .desktop-nav .nav-card-item:hover::after,
        .desktop-nav .nav-link.active::after,
        .desktop-nav .nav-card-item.active::after {
            width: 100%;
        }
        .desktop-nav .btn-accent {
            background: linear-gradient(135deg, var(--accent), #e67e22);
            color: #0f172a;
            font-weight: 600;
            border-radius: var(--radius-btn);
            padding: 0.5rem 1.25rem;
            transition: var(--transition);
            box-shadow: 0 4px 16px rgba(245, 158, 11, 0.25);
        }
        .desktop-nav .btn-accent:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(245, 158, 11, 0.35);
        }
        .mobile-nav {
            display: none;
            background: transparent;
            border: none;
        }
        .mobile-nav-content a {
            color: var(--text-muted);
            font-weight: 500;
            border-radius: 0.5rem;
            transition: var(--transition);
        }
        .mobile-nav-content a:hover,
        .mobile-nav-content a.active {
            color: #fff;
            background: rgba(255, 255, 255, 0.05);
        }
        .mobile-nav-content .btn-accent {
            background: linear-gradient(135deg, var(--accent), #e67e22);
            color: #0f172a;
            font-weight: 600;
            border-radius: var(--radius-btn);
            display: block;
        }
        @media (max-width: 768px) {
            .desktop-nav {
                display: none !important;
            }
            .mobile-nav {
                display: block;
            }
        }

        /* ===== hero / banner ===== */
        .page-banner {
            position: relative;
            padding: 7rem 0 4rem;
            background: linear-gradient(135deg, #0f172a 0%, #1a2744 50%, #0f1a2e 100%);
            overflow: hidden;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.12;
            pointer-events: none;
        }
        .page-banner::after {
            content: '';
            position: absolute;
            top: -30%;
            right: -10%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(59, 130, 246, 0.12), transparent 70%);
            pointer-events: none;
        }
        .page-banner .banner-tag {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: rgba(245, 158, 11, 0.12);
            border: 1px solid rgba(245, 158, 11, 0.2);
            color: var(--accent);
            padding: 0.3rem 1rem;
            border-radius: 100px;
            font-size: 0.85rem;
            font-weight: 500;
            backdrop-filter: blur(4px);
        }

        /* ===== sections ===== */
        .section-pad {
            padding: 4.5rem 0;
        }
        @media (min-width: 768px) {
            .section-pad {
                padding: 6rem 0;
            }
        }
        .section-title {
            font-size: 1.75rem;
            font-weight: 700;
            color: #fff;
            letter-spacing: -0.3px;
            line-height: 1.3;
        }
        .section-sub {
            color: var(--text-muted);
            font-size: 1.05rem;
            max-width: 640px;
            margin-top: 0.5rem;
        }
        @media (min-width: 768px) {
            .section-title {
                font-size: 2.25rem;
            }
        }

        /* ===== cards ===== */
        .card-guide {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-card);
            padding: 1.75rem 1.5rem;
            transition: var(--transition);
            box-shadow: var(--shadow-card);
        }
        .card-guide:hover {
            transform: translateY(-6px);
            border-color: rgba(59, 130, 246, 0.2);
            box-shadow: 0 16px 48px rgba(0, 0, 0, 0.4);
        }
        .card-guide .icon-wrap {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: #fff;
            flex-shrink: 0;
        }

        /* ===== timeline ===== */
        .timeline-wrap {
            position: relative;
            padding-left: 2.5rem;
        }
        .timeline-wrap::before {
            content: '';
            position: absolute;
            left: 10px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: linear-gradient(to bottom, var(--secondary), var(--accent));
            border-radius: 2px;
        }
        .timeline-item {
            position: relative;
            padding-bottom: 2.5rem;
        }
        .timeline-item:last-child {
            padding-bottom: 0;
        }
        .timeline-item::before {
            content: '';
            position: absolute;
            left: -2.5rem;
            top: 0.3rem;
            width: 20px;
            height: 20px;
            border-radius: 50%;
            background: var(--secondary);
            border: 3px solid var(--bg-dark);
            box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.3);
        }
        .timeline-item:nth-child(even)::before {
            background: var(--accent);
            box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.3);
        }
        .timeline-item .step-badge {
            display: inline-block;
            font-size: 0.7rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            color: var(--text-dim);
            background: rgba(255, 255, 255, 0.04);
            padding: 0.15rem 0.75rem;
            border-radius: 100px;
            border: 1px solid rgba(255, 255, 255, 0.06);
            margin-bottom: 0.4rem;
        }

        /* ===== faq ===== */
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: 0.75rem;
            padding: 1.25rem 1.5rem;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(255, 255, 255, 0.08);
        }
        .faq-item .faq-q {
            font-weight: 600;
            color: #fff;
            font-size: 1.05rem;
        }

        /* ===== cta ===== */
        .cta-section {
            background: linear-gradient(135deg, #0f172a, #1a2744);
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
        }
        .cta-section .btn-glow {
            background: linear-gradient(135deg, var(--accent), #e67e22);
            color: #0f172a;
            font-weight: 700;
            padding: 0.9rem 2.5rem;
            border-radius: var(--radius-btn);
            font-size: 1.05rem;
            transition: var(--transition);
            box-shadow: 0 6px 24px rgba(245, 158, 11, 0.3);
            display: inline-flex;
            align-items: center;
            gap: 0.75rem;
        }
        .cta-section .btn-glow:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(245, 158, 11, 0.4);
        }

        /* ===== footer ===== */
        .footer-link {
            color: var(--text-dim);
            transition: var(--transition);
            position: relative;
        }
        .footer-link:hover {
            color: var(--accent);
            padding-left: 4px;
        }

        /* ===== responsive tweaks ===== */
        @media (max-width: 640px) {
            .page-banner {
                padding: 5.5rem 0 3rem;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .card-guide {
                padding: 1.25rem 1rem;
            }
            .timeline-wrap {
                padding-left: 2rem;
            }
            .timeline-item::before {
                left: -2rem;
                width: 16px;
                height: 16px;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 1rem;
            }
            .page-banner .banner-tag {
                font-size: 0.75rem;
                padding: 0.2rem 0.8rem;
            }
            .cta-section .btn-glow {
                width: 100%;
                justify-content: center;
                padding: 0.8rem 1.5rem;
                font-size: 0.95rem;
            }
        }

        /* ===== utility ===== */
        .text-gradient {
            background: linear-gradient(135deg, var(--accent), #f97316);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .bg-glass {
            background: rgba(255, 255, 255, 0.03);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.06);
        }
        .gap-grid {
            gap: 1.5rem;
        }
        @media (min-width: 768px) {
            .gap-grid {
                gap: 2rem;
            }
        }
        .tag-pill {
            display: inline-block;
            background: rgba(59, 130, 246, 0.1);
            color: var(--secondary);
            font-size: 0.75rem;
            font-weight: 500;
            padding: 0.2rem 0.9rem;
            border-radius: 100px;
            border: 1px solid rgba(59, 130, 246, 0.15);
        }
        .tag-pill.amber {
            background: rgba(245, 158, 11, 0.1);
            color: var(--accent);
            border-color: rgba(245, 158, 11, 0.15);
        }
        .tag-pill.emerald {
            background: rgba(16, 185, 129, 0.1);
            color: #34d399;
            border-color: rgba(16, 185, 129, 0.15);
        }