/* roulang page: index */
:root {
            --primary: #0f172a;
            --accent: #f59e0b;
            --accent2: #10b981;
            --dark: #0b1120;
            --dark2: #111c33;
            --light: #f8fafc;
            --text: #1e293b;
            --muted: #64748b;
            --border: #e2e8f0;
            --radius: 16px;
            --shadow: 0 10px 40px rgba(15, 23, 42, .08);
            --shadow-lg: 0 20px 60px rgba(15, 23, 42, .14);
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Inter', 'PingFang SC', 'Noto Sans SC', 'Microsoft YaHei', sans-serif;
            background: var(--light);
            color: var(--text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: inherit;
            text-decoration: none;
        }
        img {
            max-width: 100%;
            display: block;
        }
        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 15px;
            transition: all .3s ease;
            border: 2px solid transparent;
            cursor: pointer;
            line-height: 1.4;
        }
        .btn-sm {
            padding: 8px 20px;
            font-size: 13px;
        }
        .btn-accent {
            background: var(--accent);
            color: var(--dark);
            box-shadow: 0 4px 16px rgba(245, 158, 11, .35);
        }
        .btn-accent:hover {
            background: #d97706;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(245, 158, 11, .45);
        }
        .btn-outline {
            border-color: rgba(255, 255, 255, .4);
            color: #fff;
        }
        .btn-outline:hover {
            background: rgba(255, 255, 255, .12);
            border-color: #fff;
            transform: translateY(-2px);
        }
        .btn-dark {
            background: var(--dark);
            color: #fff;
        }
        .btn-dark:hover {
            background: #1e293b;
            transform: translateY(-2px);
            box-shadow: var(--shadow);
        }
        .section {
            padding: 80px 0;
        }
        .section-title {
            font-size: 36px;
            font-weight: 800;
            line-height: 1.25;
            letter-spacing: -0.02em;
            color: var(--primary);
            margin-bottom: 16px;
        }
        .section-desc {
            font-size: 16px;
            color: var(--muted);
            max-width: 560px;
            line-height: 1.7;
        }
        /* Header */
        .site-header {
            background: rgba(15, 23, 42, .95);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            border-bottom: 1px solid rgba(255, 255, 255, .06);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }
        .logo-text {
            font-size: 22px;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.02em;
            background: linear-gradient(135deg, #f59e0b, #fbbf24);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .header-nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-link {
            display: inline-flex;
            align-items: center;
            padding: 8px 18px;
            border-radius: 40px;
            font-size: 14px;
            font-weight: 500;
            color: rgba(255, 255, 255, .75);
            transition: all .25s;
        }
        .nav-link:hover {
            color: #fff;
            background: rgba(255, 255, 255, .08);
        }
        .nav-link.active {
            color: var(--dark);
            background: var(--accent);
            font-weight: 600;
        }
        .header-cta {
            margin-left: 8px;
        }
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 26px;
            cursor: pointer;
            padding: 8px;
        }
        .mobile-menu {
            display: none;
            padding: 16px 24px 24px;
            background: var(--dark);
            border-top: 1px solid rgba(255, 255, 255, .06);
        }
        .mobile-menu .nav-link {
            display: block;
            padding: 12px 16px;
            border-radius: 10px;
        }
        @media (max-width: 900px) {
            .header-nav {
                display: none;
            }
            .header-cta {
                display: none;
            }
            .mobile-toggle {
                display: block;
            }
            .mobile-menu.open {
                display: block;
            }
            .section {
                padding: 56px 0;
            }
            .section-title {
                font-size: 28px;
            }
        }
        /* Hero */
        .hero {
            position: relative;
            background: linear-gradient(135deg, #0b1120 0%, #111c33 50%, #1a2744 100%);
            color: #fff;
            padding: 140px 0 80px;
            overflow: hidden;
            min-height: 80vh;
            display: flex;
            align-items: center;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            opacity: .25;
            z-index: 1;
        }
        .hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(11, 17, 32, .85) 0%, rgba(11, 17, 32, .5) 60%, rgba(11, 17, 32, .2) 100%);
            z-index: 2;
        }
        .hero-content {
            position: relative;
            z-index: 3;
            max-width: 680px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(245, 158, 11, .15);
            border: 1px solid rgba(245, 158, 11, .4);
            color: #fbbf24;
            padding: 6px 18px;
            border-radius: 40px;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 24px;
            backdrop-filter: blur(8px);
        }
        .hero h1 {
            font-size: 48px;
            font-weight: 800;
            line-height: 1.15;
            letter-spacing: -0.03em;
            margin-bottom: 20px;
        }
        .hero p {
            font-size: 17px;
            color: rgba(255, 255, 255, .8);
            max-width: 540px;
            margin-bottom: 32px;
            line-height: 1.8;
        }
        .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 48px;
        }
        .hero-stats {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            max-width: 480px;
        }
        .stat-item {
            background: rgba(255, 255, 255, .06);
            border: 1px solid rgba(255, 255, 255, .1);
            border-radius: 14px;
            padding: 16px 20px;
            backdrop-filter: blur(8px);
            text-align: center;
        }
        .stat-number {
            font-size: 26px;
            font-weight: 800;
            color: var(--accent);
        }
        .stat-label {
            font-size: 13px;
            color: rgba(255, 255, 255, .6);
            margin-top: 4px;
        }
        @media (max-width: 768px) {
            .hero {
                padding: 120px 0 56px;
                min-height: auto;
            }
            .hero h1 {
                font-size: 32px;
            }
            .hero p {
                font-size: 15px;
            }
            .hero-stats {
                grid-template-columns: repeat(3, 1fr);
                gap: 12px;
            }
            .stat-number {
                font-size: 20px;
            }
        }
        /* Card */
        .card {
            background: #fff;
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--border);
            transition: all .35s ease;
            box-shadow: 0 2px 8px rgba(15, 23, 42, .04);
        }
        .card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
        }
        .card-img {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 10;
            background: var(--dark2);
        }
        .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }
        .card:hover .card-img img {
            transform: scale(1.06);
        }
        .card-body {
            padding: 24px;
        }
        .card-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--accent);
            background: rgba(245, 158, 11, .1);
            padding: 3px 12px;
            border-radius: 20px;
            margin-bottom: 12px;
            letter-spacing: .02em;
        }
        .card-title {
            font-size: 17px;
            font-weight: 700;
            line-height: 1.5;
            color: var(--primary);
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .card-text {
            font-size: 14px;
            color: var(--muted);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-top: 16px;
            font-size: 13px;
            color: var(--muted);
            border-top: 1px solid var(--border);
            padding-top: 14px;
        }
        /* Feature */
        .feature-item {
            text-align: center;
            padding: 36px 24px;
            border-radius: var(--radius);
            transition: all .3s;
            background: #fff;
            border: 1px solid var(--border);
        }
        .feature-item:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: rgba(245, 158, 11, .4);
        }
        .feature-icon {
            width: 64px;
            height: 64px;
            border-radius: 18px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            margin-bottom: 20px;
            background: linear-gradient(135deg, rgba(245, 158, 11, .15), rgba(245, 158, 11, .05));
            color: var(--accent);
        }
        .feature-item h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--primary);
        }
        .feature-item p {
            font-size: 14px;
            color: var(--muted);
            line-height: 1.7;
        }
        /* Timeline */
        .timeline {
            position: relative;
            padding-left: 32px;
        }
        .timeline::before {
            content: '';
            position: absolute;
            left: 12px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: linear-gradient(180deg, var(--accent), transparent);
        }
        .timeline-item {
            position: relative;
            padding: 16px 0 16px 32px;
        }
        .timeline-item::before {
            content: '';
            position: absolute;
            left: 8px;
            top: 24px;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--accent);
        }
        .timeline-item h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--primary);
        }
        .timeline-item p {
            font-size: 14px;
            color: var(--muted);
            margin-top: 6px;
        }
        /* FAQ */
        .faq-item {
            border: 1px solid var(--border);
            border-radius: 14px;
            padding: 24px;
            background: #fff;
            margin-bottom: 16px;
            transition: all .3s;
        }
        .faq-item:hover {
            border-color: rgba(245, 158, 11, .4);
            box-shadow: var(--shadow);
        }
        .faq-item h3 {
            font-size: 16px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 8px;
        }
        .faq-item p {
            font-size: 14px;
            color: var(--muted);
            line-height: 1.8;
        }
        /* Footer */
        .site-footer {
            background: var(--dark);
            color: rgba(255, 255, 255, .7);
            padding: 60px 0 32px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 48px;
            margin-bottom: 48px;
        }
        .footer-brand .logo-text {
            font-size: 26px;
            margin-bottom: 16px;
            display: block;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            max-width: 360px;
        }
        .footer-links h4 {
            font-size: 15px;
            color: #fff;
            margin-bottom: 16px;
            font-weight: 600;
        }
        .footer-links a {
            display: block;
            font-size: 14px;
            padding: 4px 0;
            color: rgba(255, 255, 255, .6);
            transition: color .2s;
        }
        .footer-links a:hover {
            color: var(--accent);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .08);
            padding-top: 24px;
            text-align: center;
            font-size: 13px;
            color: rgba(255, 255, 255, .4);
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
        }
        /* List item */
        .news-item {
            display: flex;
            gap: 16px;
            padding: 20px 0;
            border-bottom: 1px solid var(--border);
            align-items: flex-start;
            transition: all .25s;
        }
        .news-item:hover {
            padding-left: 8px;
        }
        .news-number {
            flex-shrink: 0;
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: rgba(245, 158, 11, .1);
            color: var(--accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 14px;
        }
        .news-content h3 {
            font-size: 15px;
            color: var(--primary);
            font-weight: 600;
            margin-bottom: 4px;
            line-height: 1.5;
        }
        .news-content p {
            font-size: 13px;
            color: var(--muted);
            line-height: 1.6;
        }
        /* Category highlight */
        .cat-chip {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: #fff;
            border: 1px solid var(--border);
            padding: 8px 16px;
            border-radius: 40px;
            font-size: 13px;
            font-weight: 500;
            color: var(--text);
            transition: all .25s;
        }
        .cat-chip:hover {
            border-color: var(--accent);
            color: var(--accent);
            transform: translateY(-2px);
            box-shadow: var(--shadow);
        }
        /* Steps */
        .step-card {
            text-align: center;
            padding: 32px 20px;
            background: #fff;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            position: relative;
            transition: all .3s;
        }
        .step-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-6px);
        }
        .step-num {
            width: 48px;
            height: 48px;
            margin: 0 auto 16px;
            border-radius: 50%;
            background: var(--dark);
            color: var(--accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 800;
        }
        .step-card h3 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--primary);
        }
        .step-card p {
            font-size: 14px;
            color: var(--muted);
        }
        /* CTA */
        .cta-section {
            background: linear-gradient(135deg, var(--dark) 0%, var(--dark2) 100%);
            border-radius: 24px;
            padding: 56px 48px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            opacity: .15;
            z-index: 1;
        }
        .cta-section>* {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            color: #fff;
            font-size: 30px;
            font-weight: 800;
            margin-bottom: 12px;
        }
        .cta-section p {
            color: rgba(255, 255, 255, .7);
            margin-bottom: 24px;
        }
        @media (max-width: 768px) {
            .cta-section {
                padding: 40px 24px;
                border-radius: 16px;
            }
            .cta-section h2 {
                font-size: 24px;
            }
        }
        /* Utility */
        .text-accent {
            color: var(--accent);
        }
        .bg-dark {
            background: var(--dark);
        }
        .bg-dark2 {
            background: var(--dark2);
        }
        .text-white {
            color: #fff;
        }
        .fade-up {
            opacity: 0;
            transform: translateY(20px);
            animation: fadeUp .6s ease forwards;
        }
        @keyframes fadeUp {
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .focusable:focus-visible {
            outline: 3px solid var(--accent);
            outline-offset: 2px;
        }
        .card-link {
            display: block;
            height: 100%;
        }
        .grid-4 {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        @media (max-width: 1024px) {
            .grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }
            .grid-3 {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 640px) {
            .grid-4,
            .grid-3,
            .grid-2 {
                grid-template-columns: 1fr;
            }
        }

/* roulang page: category1 */
:root {
            --ink-900: #0b101e;
            --ink-800: #151f33;
            --ink-700: #1f2a40;
            --gold: #e2ae45;
            --gold-dark: #c39226;
            --gold-light: #f3d48c;
            --cream: #f6f3ec;
            --white: #ffffff;
            --text-body: #465160;
            --text-muted: #7a8497;
            --border: #e7e0d2;
            --radius-lg: 24px;
            --radius-md: 16px;
            --radius-sm: 10px;
            --shadow-sm: 0 2px 12px rgba(11, 16, 30, .06);
            --shadow-md: 0 12px 30px rgba(11, 16, 30, .08);
            --shadow-lg: 0 24px 60px rgba(11, 16, 30, .12);
            --section-space: 100px;
        }

        * { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            background: var(--cream);
            color: var(--text-body);
            line-height: 1.7;
            font-size: 16px;
        }
        img { max-width: 100%; display: block; }
        a { color: inherit; text-decoration: none; transition: color .25s ease; }
        button { font-family: inherit; border: none; background: none; cursor: pointer; }

        .container { max-width: 1200px; margin: 0 auto; padding-left: 24px; padding-right: 24px; }
        .section { padding: var(--section-space) 0; }
        .section-light { background: var(--white); }
        .section-dark { background: var(--ink-900); color: rgba(255, 255, 255, .72); }
        .section-head { max-width: 640px; margin-bottom: 48px; }
        .section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
        .section-head .eyebrow {
            display: inline-block;
            font-size: 13px;
            letter-spacing: .14em;
            color: var(--gold-dark);
            font-weight: 700;
            text-transform: uppercase;
            background: rgba(226, 174, 69, .14);
            padding: 4px 14px;
            border-radius: 999px;
        }
        .section-head h2 { font-size: 34px; line-height: 1.3; color: var(--ink-900); font-weight: 800; margin-top: 12px; }
        .section-head p { margin-top: 12px; color: var(--text-muted); font-size: 15px; }
        .section-dark .section-head h2 { color: #fff; }
        .section-dark .section-head p { color: rgba(255, 255, 255, .6); }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border-radius: 999px;
            font-weight: 600;
            transition: all .3s ease;
        }
        .btn-primary {
            background: var(--gold);
            color: var(--ink-900);
            padding: 13px 26px;
            font-size: 14px;
            box-shadow: 0 6px 18px rgba(226, 174, 69, .3);
        }
        .btn-primary:hover { background: var(--gold-dark); transform: translateY(-2px); box-shadow: 0 10px 28px rgba(226, 174, 69, .36); }
        .btn-outline {
            border: 1.5px solid rgba(255, 255, 255, .4);
            color: #fff;
            padding: 13px 26px;
            font-size: 14px;
        }
        .btn-outline:hover { border-color: #fff; background: rgba(255, 255, 255, .08); transform: translateY(-2px); }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(255, 255, 255, .92);
            backdrop-filter: blur(14px);
            border-bottom: 1px solid rgba(0, 0, 0, .05);
        }
        .header-inner { display: flex; align-items: center; justify-content: space-between; height: 74px; gap: 20px; }
        .logo-text { font-size: 22px; font-weight: 800; letter-spacing: .02em; color: var(--ink-900); white-space: nowrap; }
        .logo-text em { font-style: normal; color: var(--gold-dark); }
        .header-nav { display: flex; align-items: center; gap: 6px; }
        .nav-link {
            padding: 10px 16px;
            border-radius: 999px;
            font-size: 15px;
            font-weight: 500;
            color: var(--ink-700);
            transition: all .25s ease;
        }
        .nav-link:hover { background: rgba(226, 174, 69, .14); color: var(--gold-dark); }
        .nav-link.active { background: var(--ink-900); color: #fff; box-shadow: 0 4px 14px rgba(11, 16, 30, .18); }
        .header-cta { padding: 10px 22px; font-size: 14px; }
        .menu-toggle {
            display: none;
            width: 44px;
            height: 44px;
            align-items: center;
            justify-content: center;
            border-radius: 12px;
            color: var(--ink-900);
            font-size: 20px;
        }

        .page-hero {
            position: relative;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            padding: 120px 0 90px;
            color: #fff;
            overflow: hidden;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(115deg, rgba(11, 16, 30, .94) 18%, rgba(11, 16, 30, .64) 58%, rgba(11, 16, 30, .36));
        }
        .page-hero .container { position: relative; z-index: 1; }
        .breadcrumb { display: flex; align-items: center; gap: 8px; font-size: 13px; color: rgba(255, 255, 255, .7); margin-bottom: 20px; }
        .breadcrumb a:hover { color: var(--gold); }
        .breadcrumb .current { color: var(--gold); }
        .hero-title { font-size: 52px; line-height: 1.15; font-weight: 900; color: #fff; letter-spacing: .01em; }
        .hero-title .gold { color: var(--gold); }
        .hero-desc { margin-top: 20px; font-size: 18px; color: rgba(255, 255, 255, .82); max-width: 620px; line-height: 1.75; }
        .hero-actions { display: flex; gap: 14px; margin-top: 34px; flex-wrap: wrap; }

        .countdown-card {
            background: rgba(255, 255, 255, .08);
            border: 1px solid rgba(255, 255, 255, .16);
            backdrop-filter: blur(16px);
            border-radius: var(--radius-lg);
            padding: 30px 26px;
            text-align: center;
        }
        .cd-label { font-size: 13px; letter-spacing: .08em; color: rgba(255, 255, 255, .72); }
        .cd-grid { display: flex; justify-content: center; gap: 14px; margin: 22px 0 14px; }
        .cd-block { background: rgba(255, 255, 255, .12); border-radius: 14px; padding: 14px 16px; min-width: 72px; }
        .cd-block strong { display: block; font-size: 30px; font-weight: 800; color: #fff; line-height: 1.2; }
        .cd-block span { font-size: 13px; color: rgba(255, 255, 255, .68); }
        .cd-note { font-size: 13px; color: rgba(255, 255, 255, .55); }

        .hero-stats { position: relative; z-index: 1; }
        .stat-card {
            background: rgba(255, 255, 255, .08);
            border: 1px solid rgba(255, 255, 255, .12);
            border-radius: 18px;
            padding: 24px 18px;
            text-align: center;
            transition: all .3s ease;
        }
        .stat-card:hover { background: rgba(255, 255, 255, .13); transform: translateY(-4px); }
        .stat-card strong { display: block; font-size: 34px; font-weight: 900; color: var(--gold); line-height: 1.2; }
        .stat-card span { display: block; margin-top: 6px; font-size: 14px; color: rgba(255, 255, 255, .72); }

        .cat-scroll { display: flex; gap: 24px; overflow-x: auto; padding-bottom: 22px; scroll-snap-type: x mandatory; }
        .cat-scroll::-webkit-scrollbar { height: 6px; }
        .cat-scroll::-webkit-scrollbar-track { background: rgba(0, 0, 0, .04); border-radius: 99px; }
        .cat-scroll::-webkit-scrollbar-thumb { background: #d8cebc; border-radius: 99px; }
        .cat-card {
            flex: 0 0 300px;
            background: var(--white);
            border-radius: 22px;
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            scroll-snap-align: start;
            transition: all .3s ease;
        }
        .cat-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
        .cat-card img { width: 100%; height: 164px; object-fit: cover; }
        .cat-body { padding: 20px; }
        .cat-count {
            display: inline-block;
            font-size: 12px;
            font-weight: 700;
            color: var(--gold-dark);
            background: rgba(226, 174, 69, .14);
            padding: 4px 12px;
            border-radius: 999px;
        }
        .cat-body h3 { font-size: 19px; color: var(--ink-900); margin: 12px 0 8px; font-weight: 700; }
        .cat-body p { font-size: 14px; color: var(--text-muted); line-height: 1.7; margin-bottom: 14px; }
        .cat-link { font-size: 14px; font-weight: 600; color: var(--ink-900); display: inline-flex; align-items: center; gap: 5px; transition: gap .25s ease; }
        .cat-link::after { content: '→'; transition: transform .3s ease; }
        .cat-card:hover .cat-link::after { transform: translateX(5px); }

        .badge {
            display: inline-block;
            font-size: 12px;
            font-weight: 700;
            padding: 4px 12px;
            border-radius: 999px;
            background: rgba(226, 174, 69, .16);
            color: var(--gold-dark);
        }
        .guide-card {
            background: var(--white);
            border-radius: 20px;
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: all .3s ease;
            display: flex;
            flex-direction: column;
        }
        .guide-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
        .guide-thumb { overflow: hidden; }
        .guide-thumb img { width: 100%; height: 200px; object-fit: cover; transition: transform .5s ease; }
        .guide-card:hover .guide-thumb img { transform: scale(1.04); }
        .guide-body { padding: 22px; display: flex; flex-direction: column; flex: 1; }
        .guide-body h3 { font-size: 17px; line-height: 1.5; color: var(--ink-900); font-weight: 700; margin: 12px 0 8px; }
        .guide-body p { font-size: 14px; color: var(--text-muted); line-height: 1.7; margin-bottom: 16px; flex: 1; }
        .text-link { font-size: 14px; font-weight: 600; color: var(--gold-dark); display: inline-flex; align-items: center; gap: 5px; }
        .text-link::after { content: '→'; transition: transform .3s ease; }
        .text-link:hover::after { transform: translateX(5px); }

        .step-item {
            background: var(--white);
            border-radius: 20px;
            padding: 30px 24px;
            border-top: 3px solid var(--gold);
            box-shadow: var(--shadow-sm);
            transition: all .3s ease;
            position: relative;
        }
        .step-item:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); }
        .step-num { font-size: 44px; font-weight: 900; color: rgba(226, 174, 69, .28); line-height: 1; display: block; }
        .step-item h3 { font-size: 18px; color: var(--ink-900); margin: 16px 0 8px; font-weight: 700; }
        .step-item p { font-size: 14px; color: var(--text-muted); line-height: 1.7; }

        .topic-list { display: flex; flex-direction: column; gap: 14px; }
        .topic-item {
            display: flex;
            align-items: center;
            gap: 16px;
            background: rgba(255, 255, 255, .05);
            border: 1px solid rgba(255, 255, 255, .08);
            border-radius: 16px;
            padding: 18px 22px;
            transition: all .3s ease;
        }
        .topic-item:hover { background: rgba(255, 255, 255, .09); border-color: rgba(226, 174, 69, .4); transform: translateX(6px); }
        .topic-tag {
            flex-shrink: 0;
            background: rgba(226, 174, 69, .2);
            color: var(--gold);
            font-size: 12px;
            font-weight: 700;
            padding: 5px 14px;
            border-radius: 999px;
        }
        .topic-item h3 { flex: 1; font-size: 16px; color: #fff; font-weight: 600; margin: 0; line-height: 1.5; }
        .topic-item h3 a:hover { color: var(--gold); }
        .topic-time { flex-shrink: 0; font-size: 13px; color: rgba(255, 255, 255, .55); }

        .faq-list { max-width: 780px; margin: 0 auto; }
        .faq-item {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            margin-bottom: 14px;
            overflow: hidden;
            transition: box-shadow .3s ease;
        }
        .faq-item:hover { box-shadow: var(--shadow-sm); }
        .faq-q {
            width: 100%;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            padding: 20px 22px;
            font-size: 16px;
            font-weight: 600;
            color: var(--ink-900);
            text-align: left;
            background: transparent;
        }
        .faq-q .icon { font-size: 22px; color: var(--gold); transition: transform .3s ease; flex-shrink: 0; }
        .faq-item.open .faq-q .icon { transform: rotate(45deg); }
        .faq-a { max-height: 0; overflow: hidden; transition: max-height .4s ease; padding: 0 22px; color: var(--text-body); font-size: 15px; line-height: 1.8; }
        .faq-item.open .faq-a { max-height: 300px; padding-bottom: 22px; }

        .cta-section {
            padding: 90px 0;
            background: linear-gradient(130deg, #0b101e 0%, #1f2a40 60%, #3a2d14 100%);
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            width: 420px;
            height: 420px;
            border-radius: 50%;
            background: rgba(226, 174, 69, .14);
            top: -140px;
            right: -80px;
            filter: blur(70px);
        }
        .cta-inner { text-align: center; max-width: 680px; margin: 0 auto; position: relative; z-index: 1; }
        .cta-inner h2 { font-size: 34px; font-weight: 800; line-height: 1.3; }
        .cta-inner p { margin-top: 14px; color: rgba(255, 255, 255, .72); font-size: 15px; }
        .cta-form { display: flex; gap: 12px; margin-top: 30px; max-width: 480px; margin-left: auto; margin-right: auto; flex-wrap: wrap; }
        .cta-form input {
            flex: 1;
            min-width: 210px;
            padding: 14px 20px;
            border-radius: 999px;
            border: 1px solid rgba(255, 255, 255, .22);
            background: rgba(255, 255, 255, .1);
            color: #fff;
            outline: none;
            font-size: 14px;
            transition: all .3s ease;
        }
        .cta-form input::placeholder { color: rgba(255, 255, 255, .55); }
        .cta-form input:focus { border-color: var(--gold); background: rgba(255, 255, 255, .14); }
        .cta-form button {
            padding: 14px 30px;
            border-radius: 999px;
            background: var(--gold);
            color: var(--ink-900);
            font-weight: 700;
            font-size: 14px;
            transition: all .3s ease;
            box-shadow: 0 6px 18px rgba(226, 174, 69, .3);
        }
        .cta-form button:hover { background: var(--gold-light); transform: translateY(-2px); box-shadow: 0 10px 26px rgba(226, 174, 69, .4); }

        .site-footer { background: var(--ink-900); color: rgba(255, 255, 255, .65); padding: 64px 0 28px; }
        .footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr; gap: 48px; padding-bottom: 44px; border-bottom: 1px solid rgba(255, 255, 255, .08); }
        .footer-brand .logo-text { color: #fff; font-size: 22px; font-weight: 800; }
        .footer-brand p { margin-top: 16px; font-size: 14px; line-height: 1.75; max-width: 380px; }
        .footer-links h4 { color: #fff; font-size: 15px; font-weight: 700; margin-bottom: 18px; }
        .footer-links a { display: block; font-size: 14px; color: rgba(255, 255, 255, .6); margin-bottom: 12px; transition: all .25s ease; }
        .footer-links a:hover { color: var(--gold); transform: translateX(4px); }
        .footer-bottom { padding-top: 26px; text-align: center; font-size: 13px; color: rgba(255, 255, 255, .4); }

        @media (max-width: 1024px) {
            :root { --section-space: 80px; }
            .hero-title { font-size: 42px; }
        }

        @media (max-width: 768px) {
            .header-inner { height: 64px; }
            .logo-text { font-size: 19px; }
            .header-cta { display: none; }
            .menu-toggle { display: flex; }
            .header-nav {
                position: absolute;
                top: 64px;
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, .98);
                flex-direction: column;
                align-items: stretch;
                padding: 14px 20px 20px;
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow-md);
                display: none;
                gap: 4px;
            }
            .header-nav.open { display: flex; }
            .nav-link { padding: 14px 16px; border-radius: 14px; }
            .page-hero { padding: 80px 0 64px; }
            .hero-title { font-size: 34px; }
            .hero-desc { font-size: 16px; }
            .section-head h2 { font-size: 27px; }
            .cta-inner h2 { font-size: 27px; }
            .cta-form input { min-width: 100%; }
            .cta-form button { width: 100%; }
            .footer-grid { grid-template-columns: 1fr; gap: 32px; }
        }

        @media (max-width: 520px) {
            .container { padding-left: 18px; padding-right: 18px; }
            .hero-title { font-size: 29px; }
            .hero-actions .btn { width: 100%; }
            .cd-grid { gap: 8px; }
            .cd-block { min-width: 62px; padding: 12px 10px; }
            .cd-block strong { font-size: 24px; }
            .stat-card strong { font-size: 28px; }
            .topic-item { flex-wrap: wrap; gap: 10px; }
            .topic-time { width: 100%; text-align: left; }
        }

/* roulang page: article */
:root {
            --primary: #0b1f3a;
            --primary-2: #132c50;
            --accent: #f59e0b;
            --accent-2: #fbbf24;
            --bg-light: #f1f5f9;
            --bg-card: #ffffff;
            --text-main: #1e293b;
            --text-muted: #64748b;
            --border: #e2e8f0;
            --radius: 16px;
            --radius-sm: 10px;
            --shadow: 0 10px 30px rgba(2, 12, 27, 0.08);
            --shadow-lg: 0 18px 44px rgba(2, 12, 27, 0.14);
            --transition: all 0.3s cubic-bezier(0.22, 1, 0.36, 1);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "Inter", system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background: var(--bg-light);
            color: var(--text-main);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }

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

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

        button,
        input {
            font-family: inherit;
        }

        .container {
            width: min(1200px, 92%);
            margin-inline: auto;
        }

        .container-header {
            width: min(1280px, 94%);
            margin-inline: auto;
            display: flex;
            align-items: center;
            gap: 24px;
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: linear-gradient(135deg, var(--primary) 0%, #0b1930 100%);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            box-shadow: 0 6px 24px rgba(2, 12, 27, 0.35);
            padding: 14px 0;
        }

        .logo-text {
            color: #fff;
            font-size: 22px;
            font-weight: 800;
            letter-spacing: 0.5px;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            white-space: nowrap;
        }

        .logo-text::before {
            content: "";
            width: 10px;
            height: 10px;
            border-radius: 999px;
            background: var(--accent);
            box-shadow: 0 0 14px rgba(245, 158, 11, 0.9);
        }

        .header-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            margin-left: auto;
            flex-wrap: wrap;
        }

        .header-nav .nav-link {
            color: rgba(255, 255, 255, 0.75);
            font-size: 15px;
            font-weight: 500;
            padding: 9px 18px;
            border-radius: 999px;
            transition: var(--transition);
        }

        .header-nav .nav-link:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.08);
            transform: translateY(-1px);
        }

        .header-nav .nav-link.active {
            color: var(--primary);
            background: linear-gradient(135deg, var(--accent-2), var(--accent));
            font-weight: 700;
            box-shadow: 0 4px 16px rgba(245, 158, 11, 0.35);
        }

        .header-cta-btn {
            margin-left: 14px;
            white-space: nowrap;
            background: linear-gradient(135deg, var(--accent-2), var(--accent));
            color: #0b1930;
            font-weight: 700;
            font-size: 14px;
            padding: 10px 24px;
            border-radius: 999px;
            box-shadow: 0 4px 18px rgba(245, 158, 11, 0.35);
            transition: var(--transition);
        }

        .header-cta-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 28px rgba(245, 158, 11, 0.5);
            color: #0b1930;
        }

        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 26px;
            line-height: 1;
            cursor: pointer;
            padding: 6px;
            border-radius: 8px;
        }

        .mobile-menu-btn:focus {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: linear-gradient(135deg, var(--accent-2), var(--accent));
            color: #0b1930;
            font-weight: 700;
            font-size: 15px;
            padding: 13px 30px;
            border-radius: 999px;
            box-shadow: 0 8px 24px rgba(245, 158, 11, 0.3);
            transition: var(--transition);
            border: none;
            cursor: pointer;
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 32px rgba(245, 158, 11, 0.45);
            color: #0b1930;
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border: 1.5px solid rgba(255, 255, 255, 0.55);
            color: #fff;
            font-weight: 600;
            font-size: 15px;
            padding: 12px 28px;
            border-radius: 999px;
            transition: var(--transition);
            background: transparent;
        }

        .btn-outline:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.1);
            transform: translateY(-2px);
            color: #fff;
        }

        .btn-dark {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            font-size: 15px;
            padding: 12px 28px;
            border-radius: 999px;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }

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

        .article-hero {
            position: relative;
            padding: 96px 0 72px;
            background-size: cover;
            background-position: center;
            color: #fff;
            overflow: hidden;
        }

        .article-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(8, 21, 39, 0.96) 10%, rgba(11, 31, 58, 0.86) 50%, rgba(245, 158, 11, 0.25) 100%);
        }

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

        .article-breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 6px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.65);
            margin-bottom: 22px;
            letter-spacing: 0.3px;
        }

        .article-breadcrumb a {
            color: rgba(255, 255, 255, 0.75);
        }

        .article-breadcrumb a:hover {
            color: var(--accent-2);
        }

        .article-breadcrumb .sep {
            color: rgba(255, 255, 255, 0.4);
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: var(--accent-2);
            font-size: 12px;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: 999px;
            margin-bottom: 18px;
            backdrop-filter: blur(6px);
        }

        .article-hero h1 {
            font-size: clamp(30px, 4.5vw, 48px);
            line-height: 1.25;
            font-weight: 800;
            max-width: 800px;
            margin-bottom: 22px;
            letter-spacing: 0.5px;
        }

        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            align-items: center;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
        }

        .article-meta .tag-chip {
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.16);
            padding: 3px 12px;
            border-radius: 999px;
            font-size: 12px;
        }

        .article-meta span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .article-body {
            padding: 64px 0 48px;
        }

        .article-layout {
            display: grid;
            grid-template-columns: minmax(0, 1fr);
            gap: 40px;
        }

        @media (min-width: 1024px) {
            .article-layout {
                grid-template-columns: minmax(0, 2.2fr) minmax(0, 1fr);
            }
        }

        .article-main {
            background: var(--bg-card);
            border-radius: 20px;
            box-shadow: var(--shadow-lg);
            padding: clamp(24px, 4vw, 44px);
            border: 1px solid rgba(226, 232, 240, 0.8);
        }

        .article-content {
            font-size: 16.5px;
            color: #334155;
        }

        .article-content p {
            margin-bottom: 22px;
        }

        .article-content h2,
        .article-content h3 {
            margin: 32px 0 16px;
            color: var(--primary);
            line-height: 1.4;
        }

        .article-content h2 {
            font-size: 26px;
        }

        .article-content h3 {
            font-size: 21px;
        }

        .article-content ul,
        .article-content ol {
            margin: 0 0 22px 22px;
        }

        .article-content li {
            margin-bottom: 8px;
        }

        .article-content img {
            border-radius: 14px;
            margin: 24px 0;
        }

        .article-content blockquote {
            border-left: 4px solid var(--accent);
            background: #fffbeb;
            padding: 16px 22px;
            border-radius: 10px;
            margin: 24px 0;
            color: #78350f;
        }

        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 36px;
            padding-top: 24px;
            border-top: 1px solid var(--border);
        }

        .article-tags .tag {
            background: var(--bg-light);
            color: var(--text-muted);
            font-size: 13px;
            padding: 6px 16px;
            border-radius: 999px;
            font-weight: 500;
        }

        .article-footer-nav {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            margin-top: 30px;
        }

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

        .not-found-card .icon {
            font-size: 64px;
            margin-bottom: 20px;
            color: var(--accent);
        }

        .not-found-card h2 {
            color: var(--primary);
            font-size: 28px;
            margin-bottom: 12px;
        }

        .not-found-card p {
            color: var(--text-muted);
            margin-bottom: 28px;
        }

        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }

        .sidebar-card {
            background: #fff;
            border-radius: 18px;
            box-shadow: var(--shadow);
            border: 1px solid rgba(226, 232, 240, 0.7);
            padding: 22px;
            overflow: hidden;
        }

        .sidebar-card img {
            border-radius: 12px;
            margin-bottom: 16px;
            object-fit: cover;
            height: 150px;
            width: 100%;
        }

        .sidebar-card h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 10px;
        }

        .sidebar-card p {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 16px;
        }

        .side-link {
            display: block;
            font-size: 14px;
            font-weight: 500;
            color: #fff;
            background: var(--primary);
            padding: 10px 20px;
            border-radius: 999px;
            text-align: center;
            transition: var(--transition);
        }

        .side-link:hover {
            background: var(--primary-2);
            transform: translateY(-1px);
            color: #fff;
        }

        .stat-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 12px;
            margin-bottom: 14px;
        }

        .stat-item {
            background: var(--bg-light);
            padding: 14px;
            border-radius: 12px;
            text-align: center;
        }

        .stat-item .num {
            font-size: 24px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.1;
        }

        .stat-item .label {
            font-size: 12px;
            color: var(--text-muted);
            margin-top: 4px;
        }

        .side-list {
            list-style: none;
            margin: 12px 0 0;
        }

        .side-list li {
            padding: 8px 0;
            border-bottom: 1px dashed var(--border);
            font-size: 14px;
            color: var(--text-muted);
        }

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

        .side-list li strong {
            color: var(--text-main);
        }

        .side-list li::before {
            content: "›";
            color: var(--accent);
            margin-right: 6px;
            font-weight: 700;
        }

        .side-list li a {
            color: var(--text-main);
            font-weight: 500;
        }

        .side-list li a:hover {
            color: var(--accent);
        }

        .feature-section {
            padding: 72px 0 24px;
        }

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

        .section-head .eyebrow {
            display: inline-block;
            color: var(--accent);
            font-weight: 700;
            letter-spacing: 2px;
            font-size: 13px;
            text-transform: uppercase;
            margin-bottom: 10px;
        }

        .section-head h2 {
            font-size: clamp(26px, 3vw, 36px);
            font-weight: 800;
            color: var(--primary);
        }

        .section-head p {
            color: var(--text-muted);
            margin-top: 10px;
            max-width: 640px;
        }

        .feature-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 24px;
        }

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

        .card {
            background: #fff;
            border-radius: 18px;
            overflow: hidden;
            box-shadow: var(--shadow);
            border: 1px solid rgba(226, 232, 240, 0.7);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
            height: 100%;
        }

        .card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-6px);
        }

        .card-img {
            position: relative;
            overflow: hidden;
            height: 200px;
        }

        .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s;
        }

        .card:hover .card-img img {
            transform: scale(1.05);
        }

        .card-img .badge {
            position: absolute;
            top: 14px;
            left: 14px;
            background: rgba(11, 31, 58, 0.85);
            backdrop-filter: blur(4px);
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            padding: 5px 14px;
            border-radius: 999px;
            border: 1px solid rgba(255, 255, 255, 0.2);
        }

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

        .card-body h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.4;
        }

        .card-body p {
            font-size: 14px;
            color: var(--text-muted);
        }

        .card-link {
            margin-top: auto;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--accent);
            font-weight: 600;
            font-size: 14px;
        }

        .card-link:hover {
            color: var(--primary);
            gap: 10px;
        }

        .faq-section {
            padding: 72px 0;
        }

        .faq-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 24px;
        }

        @media (min-width: 768px) {
            .faq-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 16px;
            box-shadow: var(--shadow);
            padding: 22px 24px;
            margin-bottom: 16px;
        }

        .faq-item summary {
            list-style: none;
            cursor: pointer;
            font-size: 17px;
            font-weight: 600;
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
        }

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

        .faq-item summary::after {
            content: "+";
            font-size: 24px;
            font-weight: 300;
            color: var(--accent);
            transition: transform 0.3s;
        }

        .faq-item[open] summary::after {
            transform: rotate(45deg);
        }

        .faq-item .faq-text {
            margin-top: 14px;
            color: var(--text-muted);
            font-size: 15px;
        }

        .cta-section {
            position: relative;
            padding: 80px 0;
            background-size: cover;
            background-position: center;
            color: #fff;
            text-align: center;
            overflow: hidden;
        }

        .cta-section::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(8, 21, 39, 0.95), rgba(19, 44, 80, 0.9));
        }

        .cta-section .container {
            position: relative;
            z-index: 2;
        }

        .cta-section h2 {
            font-size: clamp(28px, 4vw, 42px);
            font-weight: 800;
            margin-bottom: 16px;
        }

        .cta-section p {
            color: rgba(255, 255, 255, 0.75);
            max-width: 620px;
            margin: 0 auto 34px;
            font-size: 16px;
        }

        .cta-actions {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        .site-footer {
            background: #081526;
            color: rgba(255, 255, 255, 0.6);
            padding-top: 60px;
            margin-top: 24px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 40px;
        }

        .footer-brand .logo-text {
            font-size: 20px;
            color: #fff;
        }

        .footer-brand p {
            margin-top: 16px;
            max-width: 360px;
            font-size: 14px;
            line-height: 1.8;
        }

        .footer-links h4 {
            color: #fff;
            font-size: 16px;
            margin-bottom: 16px;
            font-weight: 700;
        }

        .footer-links a {
            display: block;
            padding: 6px 0;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.55);
        }

        .footer-links a:hover {
            color: var(--accent-2);
            padding-left: 6px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 20px 0;
            text-align: center;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.38);
        }

        a:focus-visible,
        button:focus-visible,
        summary:focus-visible {
            outline: 3px solid rgba(245, 158, 11, 0.6);
            outline-offset: 2px;
            border-radius: 6px;
        }

        @media (max-width: 1024px) {
            .header-nav {
                display: none;
            }

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

            .header-nav.open {
                display: flex;
                flex-direction: column;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: var(--primary);
                padding: 16px 20px;
                gap: 8px;
                border-top: 1px solid rgba(255, 255, 255, 0.08);
                box-shadow: 0 18px 30px rgba(0, 0, 0, 0.3);
            }

            .header-nav.open a {
                display: block;
                text-align: center;
                padding: 12px;
            }

            .header-cta-btn {
                margin-left: 0;
            }
        }

        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .article-hero {
                padding: 64px 0 48px;
            }

            .article-body {
                padding: 40px 0 32px;
            }

            .feature-section,
            .faq-section {
                padding: 48px 0;
            }

            .cta-actions {
                flex-direction: column;
                align-items: stretch;
            }

            .btn-primary,
            .btn-outline {
                width: 100%;
            }
        }

        @media (max-width: 520px) {
            .container-header {
                gap: 12px;
            }

            .logo-text {
                font-size: 17px;
            }

            .header-cta-btn {
                padding: 8px 16px;
                font-size: 13px;
            }

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

            .article-meta {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
        }