/* roulang page: index */
:root {
            --primary: #7c3aed;
            --primary-hover: #6d28d9;
            --accent: #f59e0b;
            --accent-hover: #d97706;
            --bg-deep: #0b0a12;
            --bg-body: #0f0e17;
            --bg-card: #141126;
            --bg-card-hover: #1d1940;
            --text-white: #f8fafc;
            --text-weak: #94a3b8;
            --text-dim: #64748b;
            --border-soft: rgba(148, 163, 184, 0.12);
            --radius-xl: 24px;
            --radius-lg: 16px;
            --radius-md: 10px;
            --shadow-card: 0 8px 30px rgba(0, 0, 0, 0.35);
            --shadow-hover: 0 12px 44px rgba(124, 58, 237, 0.18);
            --transition: all 0.3s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            background: var(--bg-body);
            color: var(--text-white);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

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

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

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

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

        input {
            font-family: inherit;
        }

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

        .section {
            padding: 88px 0;
        }

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--accent);
            font-size: 14px;
            font-weight: 600;
            letter-spacing: 2px;
            text-transform: uppercase;
            margin-bottom: 14px;
        }

        .section-title {
            font-size: 36px;
            font-weight: 800;
            line-height: 1.25;
            letter-spacing: -0.5px;
            margin-bottom: 16px;
        }

        .section-desc {
            color: var(--text-weak);
            font-size: 16px;
            max-width: 640px;
        }

        .section-header {
            margin-bottom: 48px;
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(11, 10, 18, 0.82);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-soft);
        }

        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 24px;
        }

        .site-logo a {
            font-size: 22px;
            font-weight: 800;
            background: linear-gradient(135deg, #a78bfa, #f59e0b);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            letter-spacing: 1px;
            white-space: nowrap;
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .nav-link {
            padding: 10px 18px;
            border-radius: 40px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-weak);
            transition: var(--transition);
            white-space: nowrap;
        }

        .nav-link:hover {
            color: #fff;
            background: rgba(124, 58, 237, 0.15);
        }

        .nav-link.active {
            color: #fff;
            background: rgba(124, 58, 237, 0.25);
            border: 1px solid rgba(124, 58, 237, 0.4);
        }

        .nav-cta {
            margin-left: 8px;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 26px;
            border-radius: 40px;
            background: linear-gradient(135deg, #7c3aed, #6d28d9);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            white-space: nowrap;
            transition: var(--transition);
            box-shadow: 0 4px 18px rgba(124, 58, 237, 0.35);
            border: 1px solid rgba(124, 58, 237, 0.45);
        }

        .btn-primary:hover {
            background: linear-gradient(135deg, #6d28d9, #5b21b6);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(124, 58, 237, 0.45);
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 26px;
            border-radius: 40px;
            background: transparent;
            color: var(--text-white);
            font-size: 14px;
            font-weight: 600;
            white-space: nowrap;
            transition: var(--transition);
            border: 1px solid rgba(255, 255, 255, 0.2);
        }

        .btn-secondary:hover {
            border-color: var(--primary-light);
            color: var(--primary-light);
            background: rgba(124, 58, 237, 0.08);
            transform: translateY(-2px);
        }

        .nav-toggle {
            display: none;
            width: 44px;
            height: 44px;
            border-radius: 10px;
            background: rgba(124, 58, 237, 0.15);
            color: #fff;
            font-size: 20px;
            line-height: 1;
            transition: var(--transition);
        }

        .nav-toggle:hover {
            background: rgba(124, 58, 237, 0.3);
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 640px;
            display: flex;
            align-items: center;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
        }

        .hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(115deg, rgba(11, 10, 18, 0.95) 0%, rgba(11, 10, 18, 0.72) 50%, rgba(124, 58, 237, 0.25) 100%);
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 720px;
            padding-top: 80px;
            padding-bottom: 80px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 18px;
            border-radius: 40px;
            background: rgba(245, 158, 11, 0.15);
            border: 1px solid rgba(245, 158, 11, 0.4);
            color: #fbbf24;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 1px;
            margin-bottom: 24px;
        }

        .hero h1 {
            font-size: 52px;
            font-weight: 900;
            line-height: 1.15;
            letter-spacing: -1px;
            margin-bottom: 16px;
            background: linear-gradient(135deg, #f8fafc 0%, #c7b9ff 100%);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-sub {
            font-size: 20px;
            color: #d8d4e8;
            margin-bottom: 20px;
            font-weight: 500;
        }

        .hero p.hero-desc {
            font-size: 15px;
            color: var(--text-weak);
            max-width: 560px;
            margin-bottom: 32px;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            margin-bottom: 48px;
        }

        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 48px;
        }

        .stat-item {
            display: flex;
            flex-direction: column;
        }

        .stat-item strong {
            font-size: 30px;
            font-weight: 800;
            color: #fff;
        }

        .stat-item span {
            font-size: 13px;
            color: var(--text-weak);
            margin-top: 2px;
        }

        /* ===== Cards ===== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .feature-card {
            background: var(--bg-card);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-lg);
            padding: 36px 32px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .feature-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: linear-gradient(90deg, transparent, var(--primary), transparent);
            opacity: 0;
            transition: var(--transition);
        }

        .feature-card:hover {
            background: var(--bg-card-hover);
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(124, 58, 237, 0.3);
        }

        .feature-card:hover::before {
            opacity: 1;
        }

        .feature-icon {
            width: 56px;
            height: 56px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            background: rgba(124, 58, 237, 0.15);
            color: var(--primary-light);
            margin-bottom: 22px;
            transition: var(--transition);
        }

        .feature-card:hover .feature-icon {
            background: rgba(124, 58, 237, 0.3);
            transform: scale(1.05);
        }

        .feature-card h3 {
            font-size: 19px;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .feature-card p {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.7;
        }

        /* ===== Category Cards ===== */
        .category-card {
            border-radius: var(--radius-xl);
            overflow: hidden;
            position: relative;
            min-height: 320px;
            display: block;
            background: var(--bg-card);
            border: 1px solid var(--border-soft);
            transition: var(--transition);
        }

        .category-card img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .category-card:hover img {
            transform: scale(1.06);
        }

        .category-card-body {
            padding: 26px 28px;
        }

        .category-card-body h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .category-card-body p {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.6;
        }

        .category-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(124, 58, 237, 0.35);
        }

        /* ===== News List ===== */
        .news-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
        }

        .news-item {
            background: var(--bg-card);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-lg);
            padding: 24px;
            display: flex;
            gap: 20px;
            transition: var(--transition);
        }

        .news-item:hover {
            background: var(--bg-card-hover);
            box-shadow: var(--shadow-hover);
            border-color: rgba(124, 58, 237, 0.3);
            transform: translateY(-4px);
        }

        .news-thumb {
            width: 120px;
            height: 90px;
            border-radius: var(--radius-md);
            object-fit: cover;
            flex-shrink: 0;
        }

        .news-body {
            flex: 1;
            min-width: 0;
        }

        .news-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 8px;
            font-size: 12px;
            color: var(--text-weak);
        }

        .news-cat {
            background: rgba(124, 58, 237, 0.2);
            color: var(--primary-light);
            padding: 3px 12px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 600;
        }

        .news-item h3 {
            font-size: 16px;
            font-weight: 600;
            line-height: 1.5;
            margin-bottom: 6px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-item p {
            font-size: 13px;
            color: var(--text-weak);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            line-height: 1.6;
        }

        .news-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: 60px 20px;
            color: var(--text-weak);
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            border: 1px dashed var(--border-soft);
        }

        /* ===== Stats Band ===== */
        .stats-band {
            background: linear-gradient(135deg, rgba(124, 58, 237, 0.12), rgba(245, 158, 11, 0.08));
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-xl);
            padding: 56px 48px;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 40px;
            text-align: center;
        }

        .stats-band .stat-card strong {
            font-size: 40px;
            font-weight: 900;
            background: linear-gradient(135deg, #fff, #a78bfa);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            display: block;
        }

        .stats-band .stat-card span {
            font-size: 14px;
            color: var(--text-weak);
            display: block;
            margin-top: 4px;
        }

        /* ===== Steps ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
        }

        .step-card {
            text-align: center;
            padding: 36px 24px;
            border-radius: var(--radius-lg);
            background: var(--bg-card);
            border: 1px solid var(--border-soft);
            position: relative;
            transition: var(--transition);
        }

        .step-card:hover {
            background: var(--bg-card-hover);
            transform: translateY(-6px);
        }

        .step-num {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #fff;
            font-size: 18px;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            box-shadow: 0 4px 14px rgba(124, 58, 237, 0.35);
        }

        .step-card h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .step-card p {
            font-size: 13px;
            color: var(--text-weak);
            line-height: 1.6;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 820px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-lg);
            padding: 28px 32px;
            margin-bottom: 16px;
            transition: var(--transition);
        }

        .faq-item:hover {
            border-color: rgba(124, 58, 237, 0.35);
        }

        .faq-question {
            font-size: 16px;
            font-weight: 600;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            gap: 20px;
        }

        .faq-question .faq-toggle {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(124, 58, 237, 0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            color: var(--primary-light);
            flex-shrink: 0;
        }

        .faq-answer {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.8;
            margin-top: 14px;
            display: none;
        }

        .faq-item.open .faq-answer {
            display: block;
        }

        .faq-item.open .faq-toggle i {
            transform: rotate(45deg);
        }

        /* ===== CTA ===== */
        .cta-section {
            position: relative;
            border-radius: var(--radius-xl);
            overflow: hidden;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            padding: 80px 56px;
            text-align: center;
        }

        .cta-section::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(11, 10, 18, 0.92), rgba(76, 29, 149, 0.85));
        }

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

        .cta-content h2 {
            font-size: 34px;
            font-weight: 800;
            margin-bottom: 14px;
        }

        .cta-content p {
            font-size: 15px;
            color: var(--text-weak);
            max-width: 520px;
            margin: 0 auto 30px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-deep);
            border-top: 1px solid var(--border-soft);
            padding: 64px 0 28px;
        }

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

        .footer-brand p {
            font-size: 14px;
            color: var(--text-weak);
            margin-top: 16px;
            line-height: 1.8;
            max-width: 280px;
        }

        .footer-brand .footer-logo {
            font-size: 22px;
            font-weight: 800;
            background: linear-gradient(135deg, #a78bfa, #f59e0b);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 18px;
            color: #fff;
        }

        .footer-col a {
            display: block;
            font-size: 14px;
            color: var(--text-weak);
            padding: 5px 0;
        }

        .footer-col a:hover {
            color: var(--primary-light);
            padding-left: 4px;
        }

        .footer-bottom {
            border-top: 1px solid var(--border-soft);
            padding-top: 24px;
            text-align: center;
            font-size: 13px;
            color: var(--text-dim);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .card-grid {
                gap: 20px;
            }

            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .stats-band {
                padding: 40px 30px;
                grid-template-columns: repeat(2, 1fr);
                gap: 32px;
            }
        }

        @media (max-width: 900px) {
            .nav-menu {
                display: none;
                position: absolute;
                top: 72px;
                left: 0;
                right: 0;
                background: rgba(11, 10, 18, 0.98);
                border-bottom: 1px solid var(--border-soft);
                padding: 16px 24px;
                flex-direction: column;
                align-items: flex-start;
                gap: 4px;
            }

            .nav-menu.open {
                display: flex;
            }

            .nav-toggle {
                display: inline-flex;
                align-items: center;
                justify-content: center;
            }

            .nav-cta {
                display: none;
            }

            .card-grid {
                grid-template-columns: 1fr;
                max-width: 440px;
                margin: 0 auto;
            }

            .news-grid {
                grid-template-columns: 1fr;
            }

            .hero h1 {
                font-size: 40px;
            }

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

        @media (max-width: 640px) {
            .section {
                padding: 64px 0;
            }

            .section-title {
                font-size: 28px;
            }

            .container {
                padding: 0 18px;
            }

            .hero {
                min-height: 560px;
            }

            .hero h1 {
                font-size: 32px;
            }

            .hero-sub {
                font-size: 16px;
            }

            .hero-actions {
                flex-direction: column;
            }

            .hero-actions .btn-primary,
            .hero-actions .btn-secondary {
                width: 100%;
                justify-content: center;
            }

            .hero-stats {
                gap: 24px;
            }

            .stat-item strong {
                font-size: 22px;
            }

            .news-item {
                flex-direction: column;
            }

            .news-thumb {
                width: 100%;
                height: 160px;
            }

            .steps-grid {
                grid-template-columns: 1fr;
            }

            .stats-band {
                grid-template-columns: 1fr 1fr;
                padding: 32px 20px;
                gap: 24px;
            }

            .stats-band .stat-card strong {
                font-size: 28px;
            }

            .cta-section {
                padding: 56px 24px;
            }

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

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .footer-col a {
                padding: 6px 0;
            }

            .faq-item {
                padding: 22px 20px;
            }
        }

        @media (max-width: 480px) {
            .site-logo a {
                font-size: 18px;
            }

            .stats-band {
                grid-template-columns: 1fr;
            }

            .footer-bottom {
                font-size: 12px;
                line-height: 1.8;
            }
        }

/* roulang page: category1 */
:root {
            --brand-dark: #0f172a;
            --brand-darker: #0b1120;
            --brand-gold: #eab308;
            --brand-gold-light: #facc15;
            --brand-blue: #3b82f6;
            --bg-light: #f1f5f9;
            --bg-white: #ffffff;
            --text-main: #1e293b;
            --text-mute: #64748b;
            --border-color: #e2e8f0;
            --radius-lg: 20px;
            --radius-md: 14px;
            --radius-sm: 10px;
            --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.06);
            --shadow-md: 0 12px 32px rgba(15, 23, 42, 0.12);
            --shadow-lg: 0 24px 60px rgba(15, 23, 42, 0.18);
        }

        *,
        *::before,
        *::after {
            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-color: var(--bg-light);
            color: var(--text-main);
            line-height: 1.7;
            font-size: 16px;
        }

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

        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.2s ease;
        }

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

        input,
        select,
        textarea {
            font-family: inherit;
            font-size: 1rem;
        }

        .container {
            width: min(1200px, 92%);
            margin: 0 auto;
        }

        /* ===== Header / Nav 卡片化控制面板 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(15, 23, 42, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(148, 163, 184, 0.08);
            padding: 12px 0;
        }

        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            background: rgba(11, 17, 32, 0.65);
            border: 1px solid rgba(148, 163, 184, 0.14);
            border-radius: 16px;
            padding: 10px 16px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
        }

        .site-logo a {
            font-size: 1.35rem;
            font-weight: 800;
            color: #ffffff;
            letter-spacing: 0.02em;
            white-space: nowrap;
            background: linear-gradient(120deg, #facc15, #fbbf24);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
        }

        .nav-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: #cbd5e1;
            font-size: 0.925rem;
            font-weight: 500;
            padding: 9px 18px;
            border-radius: 12px;
            border: 1px solid transparent;
            transition: all 0.25s ease;
            white-space: nowrap;
        }

        .nav-link i {
            font-size: 0.85rem;
            opacity: 0.7;
        }

        .nav-link:hover {
            color: #ffffff;
            background: rgba(148, 163, 184, 0.12);
            border-color: rgba(148, 163, 184, 0.18);
            transform: translateY(-2px);
        }

        .nav-link:focus-visible {
            outline: 2px solid var(--brand-gold);
            outline-offset: 2px;
        }

        .nav-link.active {
            background: rgba(234, 179, 8, 0.14);
            border-color: rgba(234, 179, 8, 0.28);
            color: #facc15;
            font-weight: 600;
        }

        .nav-cta .btn-primary {
            background: linear-gradient(135deg, #f59e0b, #eab308);
            color: #0f172a;
            font-weight: 700;
            font-size: 0.9rem;
            padding: 10px 20px;
            border-radius: 12px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            box-shadow: 0 4px 14px rgba(234, 179, 8, 0.35);
            transition: all 0.25s ease;
        }

        .nav-cta .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 22px rgba(234, 179, 8, 0.45);
        }

        .nav-toggle {
            display: none;
            width: 42px;
            height: 42px;
            border-radius: 12px;
            color: #fff;
            font-size: 1.2rem;
            background: rgba(148, 163, 184, 0.12);
            align-items: center;
            justify-content: center;
        }

        .nav-toggle:hover {
            background: rgba(234, 179, 8, 0.2);
            color: #facc15;
        }

        /* ===== 按钮通用 ===== */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            background: linear-gradient(135deg, #f59e0b, #eab308);
            color: #0f172a;
            font-weight: 700;
            padding: 14px 30px;
            border-radius: 14px;
            box-shadow: 0 6px 18px rgba(234, 179, 8, 0.3);
            border: none;
            transition: all 0.25s ease;
        }

        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 30px rgba(234, 179, 8, 0.4);
        }

        .btn-primary:focus-visible,
        .btn-ghost:focus-visible {
            outline: 2px solid var(--brand-gold);
            outline-offset: 3px;
        }

        .btn-ghost {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            background: rgba(255, 255, 255, 0.08);
            backdrop-filter: blur(6px);
            color: #e2e8f0;
            font-weight: 600;
            padding: 14px 30px;
            border-radius: 14px;
            border: 1px solid rgba(255, 255, 255, 0.22);
            transition: all 0.25s ease;
        }

        .btn-ghost:hover {
            background: rgba(255, 255, 255, 0.16);
            border-color: rgba(234, 179, 8, 0.5);
            transform: translateY(-3px);
        }

        /* ===== Page Hero ===== */
        .page-hero {
            padding: 120px 0 100px;
            position: relative;
            background: linear-gradient(135deg, rgba(11, 18, 32, 0.93), rgba(15, 23, 42, 0.78)), url("/assets/images/backpic/back-1.png") center/cover no-repeat;
            text-align: center;
            border-bottom: 1px solid rgba(148, 163, 184, 0.08);
        }

        .page-hero .badge-line {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(234, 179, 8, 0.12);
            border: 1px solid rgba(234, 179, 8, 0.3);
            color: #facc15;
            font-size: 0.85rem;
            font-weight: 600;
            padding: 7px 18px;
            border-radius: 999px;
            margin-bottom: 28px;
            letter-spacing: 0.05em;
        }

        .page-hero h1 {
            font-size: clamp(2.2rem, 5vw, 3.4rem);
            color: #ffffff;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 20px;
            letter-spacing: 0.01em;
        }

        .page-hero h1 .highlight {
            color: transparent;
            background: linear-gradient(135deg, #facc15, #fbbf24);
            -webkit-background-clip: text;
            background-clip: text;
        }

        .page-hero p {
            color: #cbd5e1;
            font-size: 1.1rem;
            max-width: 680px;
            margin: 0 auto 40px;
            line-height: 1.8;
        }

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

        /* ===== 板块通用 ===== */
        .section-pad {
            padding: 90px 0;
        }

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--brand-gold);
            background: rgba(234, 179, 8, 0.08);
            padding: 6px 16px;
            border-radius: 999px;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            margin-bottom: 16px;
        }

        .section-title {
            font-size: clamp(1.8rem, 3.5vw, 2.5rem);
            font-weight: 800;
            line-height: 1.3;
            color: var(--text-main);
            margin-bottom: 16px;
        }

        .section-desc {
            color: var(--text-mute);
            font-size: 1.05rem;
            max-width: 720px;
            line-height: 1.8;
        }

        .section-head {
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
            margin-bottom: 56px;
        }

        /* ===== Intro 板块 ===== */
        .intro-section .intro-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 60px;
            align-items: center;
        }

        .intro-content .section-title {
            margin-bottom: 18px;
        }

        .intro-content p {
            color: var(--text-mute);
            line-height: 1.9;
            margin-bottom: 16px;
        }

        .intro-points {
            display: grid;
            gap: 14px;
            margin-top: 28px;
        }

        .intro-point {
            display: flex;
            align-items: center;
            gap: 14px;
            background: var(--bg-white);
            border-radius: 14px;
            padding: 14px 20px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: all 0.25s ease;
        }

        .intro-point:hover {
            transform: translateX(4px);
            box-shadow: var(--shadow-md);
            border-color: rgba(234, 179, 8, 0.4);
        }

        .intro-point i {
            width: 42px;
            height: 42px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 12px;
            background: rgba(234, 179, 8, 0.1);
            color: var(--brand-gold);
            font-size: 1.1rem;
            flex-shrink: 0;
        }

        .intro-point strong {
            font-size: 0.98rem;
            color: var(--text-main);
            display: block;
        }

        .intro-point span {
            font-size: 0.88rem;
            color: var(--text-mute);
        }

        .intro-stats {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }

        .stat-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 32px 22px;
            text-align: center;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border-color);
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }

        .stat-card::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, #f59e0b, #eab308);
            transform: scaleX(0);
            transform-origin: left;
            transition: transform 0.35s ease;
        }

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

        .stat-card:hover::after {
            transform: scaleX(1);
        }

        .stat-card .stat-num {
            font-size: 2.4rem;
            font-weight: 800;
            background: linear-gradient(135deg, #0f172a, #1e293b);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 4px;
            line-height: 1.2;
        }

        .stat-card .stat-label {
            color: var(--text-mute);
            font-size: 0.9rem;
            font-weight: 500;
        }

        /* ===== Features 板块 ===== */
        .features-section {
            background: linear-gradient(180deg, #f8fafc, #f1f5f9);
        }

        .features-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
        }

        .feature-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
            transition: all 0.35s ease;
            display: flex;
            flex-direction: column;
        }

        .feature-card:hover {
            transform: translateY(-10px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(234, 179, 8, 0.35);
        }

        .feature-card .card-img {
            height: 190px;
            overflow: hidden;
            position: relative;
        }

        .feature-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .feature-card:hover .card-img img {
            transform: scale(1.06);
        }

        .feature-card .card-img::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(15, 23, 42, 0.4), transparent 70%);
        }

        .feature-card .card-body {
            padding: 26px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .feature-card .card-body h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text-main);
        }

        .feature-card .card-body p {
            color: var(--text-mute);
            font-size: 0.92rem;
            line-height: 1.7;
            flex: 1;
        }

        .feature-card .card-link {
            margin-top: 16px;
            color: var(--brand-gold);
            font-weight: 600;
            font-size: 0.9rem;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap 0.2s ease;
        }

        .feature-card .card-link:hover {
            gap: 10px;
        }

        /* ===== Flow 流程板块 ===== */
        .flow-section {
            background: var(--bg-white);
        }

        .flow-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            position: relative;
        }

        .flow-step {
            text-align: center;
            padding: 36px 22px;
            border-radius: var(--radius-lg);
            background: #f8fafc;
            border: 1px solid var(--border-color);
            transition: all 0.3s ease;
            position: relative;
        }

        .flow-step:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            background: #ffffff;
        }

        .step-num {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: linear-gradient(135deg, #f59e0b, #eab308);
            color: #0f172a;
            font-weight: 800;
            font-size: 1.1rem;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
            box-shadow: 0 6px 16px rgba(234, 179, 8, 0.35);
        }

        .flow-step h3 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .flow-step p {
            color: var(--text-mute);
            font-size: 0.9rem;
        }

        .flow-step::after {
            content: "\f138";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            position: absolute;
            top: 50%;
            right: -22px;
            transform: translateY(-50%);
            color: #cbd5e1;
            font-size: 1.2rem;
            z-index: 2;
        }

        .flow-step:last-child::after {
            display: none;
        }

        /* ===== Articles 板块 ===== */
        .articles-section {
            background: linear-gradient(180deg, #f8fafc, #f1f5f9);
        }

        .article-list {
            display: grid;
            gap: 20px;
            max-width: 900px;
            margin: 0 auto;
        }

        .article-item {
            display: flex;
            align-items: center;
            gap: 22px;
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 18px 22px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
            transition: all 0.3s ease;
        }

        .article-item:hover {
            transform: translateX(6px);
            box-shadow: var(--shadow-md);
            border-color: rgba(234, 179, 8, 0.35);
        }

        .article-item .article-icon {
            width: 54px;
            height: 54px;
            flex-shrink: 0;
            border-radius: 14px;
            background: rgba(234, 179, 8, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            color: var(--brand-gold);
        }

        .article-item .article-info {
            flex: 1;
        }

        .article-item .article-info h3 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 4px;
            color: var(--text-main);
        }

        .article-item .article-info p {
            font-size: 0.9rem;
            color: var(--text-mute);
            line-height: 1.6;
        }

        .article-meta {
            display: flex;
            gap: 12px;
            flex-direction: column;
            align-items: flex-end;
            flex-shrink: 0;
        }

        .article-meta .tag {
            background: rgba(234, 179, 8, 0.08);
            color: #b45309;
            font-size: 0.8rem;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 999px;
        }

        .article-meta .tag.hot {
            background: rgba(239, 68, 68, 0.08);
            color: #dc2626;
        }

        .article-meta .tag.new {
            background: rgba(59, 130, 246, 0.08);
            color: #2563eb;
        }

        /* ===== FAQ 板块 ===== */
        .faq-section {
            background: var(--bg-white);
        }

        .faq-wrap {
            max-width: 820px;
            margin: 0 auto;
            display: grid;
            gap: 14px;
        }

        .faq-item {
            background: #f8fafc;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all 0.3s ease;
        }

        .faq-item.active {
            border-color: rgba(234, 179, 8, 0.45);
            box-shadow: var(--shadow-sm);
            background: #ffffff;
        }

        .faq-question {
            width: 100%;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 24px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-main);
            text-align: left;
            gap: 16px;
        }

        .faq-question .faq-icon {
            width: 30px;
            height: 30px;
            flex-shrink: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: rgba(234, 179, 8, 0.1);
            color: var(--brand-gold);
            font-size: 0.85rem;
            transition: transform 0.3s ease;
        }

        .faq-item.active .faq-icon {
            transform: rotate(180deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px;
            color: var(--text-mute);
            line-height: 1.8;
            font-size: 0.95rem;
        }

        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 24px 22px;
        }

        /* ===== CTA 板块 ===== */
        .cta-section {
            padding: 90px 0;
            background: linear-gradient(135deg, rgba(15, 23, 42, 0.96), rgba(30, 41, 59, 0.88)), url("/assets/images/backpic/back-2.png") center/cover no-repeat;
            text-align: center;
            position: relative;
        }

        .cta-section h2 {
            color: #ffffff;
            font-size: clamp(1.9rem, 4vw, 2.6rem);
            font-weight: 800;
            margin-bottom: 16px;
        }

        .cta-section p {
            color: #cbd5e1;
            max-width: 620px;
            margin: 0 auto 36px;
            font-size: 1.05rem;
            line-height: 1.8;
        }

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

        /* ===== Footer ===== */
        .site-footer {
            background: var(--brand-darker);
            color: #94a3b8;
            padding: 80px 0 30px;
            border-top: 4px solid var(--brand-gold);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 48px;
            margin-bottom: 50px;
        }

        .footer-brand .footer-logo {
            font-size: 1.4rem;
            font-weight: 800;
            color: #ffffff;
            margin-bottom: 14px;
            background: linear-gradient(120deg, #facc15, #fbbf24);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .footer-brand p {
            line-height: 1.8;
            font-size: 0.9rem;
        }

        .footer-col h4 {
            color: #e2e8f0;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 18px;
            letter-spacing: 0.03em;
        }

        .footer-col a {
            display: block;
            color: #94a3b8;
            font-size: 0.92rem;
            padding: 6px 0;
            transition: color 0.2s ease, padding-left 0.2s ease;
        }

        .footer-col a:hover {
            color: #facc15;
            padding-left: 6px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(148, 163, 184, 0.12);
            padding-top: 24px;
            text-align: center;
            font-size: 0.88rem;
            color: #64748b;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .flow-steps {
                grid-template-columns: repeat(2, 1fr);
                row-gap: 40px;
            }

            .flow-step::after {
                display: none;
            }

            .intro-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 40px;
            }
        }

        @media (max-width: 768px) {
            .nav-toggle {
                display: inline-flex;
            }

            .nav-menu {
                display: none;
                position: absolute;
                top: calc(100% + 10px);
                left: 0;
                right: 0;
                background: rgba(15, 23, 42, 0.97);
                backdrop-filter: blur(20px);
                border-radius: 16px;
                padding: 18px;
                flex-direction: column;
                align-items: stretch;
                gap: 8px;
                box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
                border: 1px solid rgba(148, 163, 184, 0.15);
            }

            .nav-menu.open {
                display: flex;
            }

            .nav-menu .nav-link {
                justify-content: flex-start;
                padding: 12px 16px;
                font-size: 0.98rem;
            }

            .nav-cta {
                margin-left: auto;
            }

            .nav-cta .btn-primary span {
                display: none;
            }

            .page-hero {
                padding: 100px 0 80px;
            }

            .section-pad {
                padding: 64px 0;
            }

            .article-item {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
            }

            .article-meta {
                flex-direction: row;
                align-items: center;
                gap: 12px;
            }
        }

        @media (max-width: 520px) {
            .container {
                width: 90%;
            }

            .site-logo a {
                font-size: 1.1rem;
            }

            .nav-cta .btn-primary {
                padding: 8px 14px;
                font-size: 0.82rem;
            }

            .nav-cta .btn-primary i {
                font-size: 0.85rem;
            }

            .features-grid {
                grid-template-columns: 1fr;
            }

            .flow-steps {
                grid-template-columns: 1fr;
            }

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

            .stat-card {
                padding: 24px 16px;
            }

            .stat-card .stat-num {
                font-size: 1.8rem;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 36px;
            }

            .hero-actions .btn-primary,
            .hero-actions .btn-ghost {
                width: 100%;
                padding: 14px 20px;
            }

            .cta-actions .btn-primary,
            .cta-actions .btn-ghost {
                width: 100%;
            }
        }

/* roulang page: article */
:root {
            --primary: #4f46e5;
            --primary-dark: #4338ca;
            --accent: #f59e0b;
            --accent-light: #fbbf24;
            --dark: #0f172a;
            --dark-soft: #1e293b;
            --bg: #f8fafc;
            --surface: #ffffff;
            --text: #1e293b;
            --muted: #64748b;
            --border: #e2e8f0;
            --radius: 24px;
            --radius-sm: 16px;
            --shadow: 0 14px 40px rgba(2, 6, 23, .08);
            --shadow-lg: 0 24px 60px rgba(2, 6, 23, .14);
            --transition: .25s ease;
        }

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

        html {
            scroll-behavior: smooth;
            scroll-padding-top: 100px;
        }

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

        a {
            color: inherit;
            text-decoration: none;
        }

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

        ul,
        ol {
            list-style: none;
        }

        button,
        input {
            font: inherit;
            border: none;
            outline: none;
            background: none;
        }

        .container {
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 24px;
        }

        :focus-visible {
            outline: 3px solid rgba(245, 158, 11, .55);
            outline-offset: 3px;
            border-radius: 4px;
        }

        .btn-primary,
        .btn-outline,
        .btn-light {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            padding: 12px 24px;
            border-radius: 999px;
            font-weight: 700;
            font-size: .95rem;
            transition: transform var(--transition), box-shadow var(--transition), background var(--transition), color var(--transition);
            white-space: nowrap;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--accent-light), var(--accent));
            color: #0f172a;
            box-shadow: 0 10px 24px rgba(245, 158, 11, .28);
        }

        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 16px 32px rgba(245, 158, 11, .38);
        }

        .btn-primary:active {
            transform: translateY(-1px);
            box-shadow: 0 8px 18px rgba(245, 158, 11, .3);
        }

        .btn-outline {
            border: 1px solid rgba(79, 70, 229, .35);
            color: var(--primary);
            background: rgba(79, 70, 229, .06);
        }

        .btn-outline:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            transform: translateY(-3px);
            box-shadow: 0 14px 28px rgba(79, 70, 229, .22);
        }

        .btn-light {
            background: rgba(255, 255, 255, .96);
            color: #0f172a;
            box-shadow: 0 12px 30px rgba(0, 0, 0, .18);
        }

        .btn-light:hover {
            transform: translateY(-3px);
            background: #fff;
            box-shadow: 0 18px 36px rgba(0, 0, 0, .24);
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(15, 23, 42, .92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255, 255, 255, .08);
        }

        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 76px;
            gap: 20px;
        }

        .site-logo a {
            font-size: 1.45rem;
            font-weight: 900;
            letter-spacing: .5px;
            line-height: 1.2;
            background: linear-gradient(135deg, var(--accent-light), var(--accent));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            white-space: nowrap;
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .nav-link {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 10px 18px;
            border-radius: 999px;
            font-size: .92rem;
            font-weight: 600;
            color: #cbd5e1;
            transition: background var(--transition), color var(--transition), transform var(--transition);
        }

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

        .nav-link.active {
            background: #fff;
            color: #0f172a;
        }

        .nav-cta .btn-primary {
            padding: 10px 20px;
            font-size: .88rem;
        }

        .nav-toggle {
            display: none;
            width: 44px;
            height: 44px;
            align-items: center;
            justify-content: center;
            border-radius: 14px;
            background: rgba(255, 255, 255, .1);
            color: #fff;
            font-size: 1.2rem;
            cursor: pointer;
        }

        .hero-banner {
            position: relative;
            padding: 112px 0 92px;
            background: linear-gradient(135deg, rgba(15, 23, 42, .96) 0%, rgba(30, 27, 75, .86) 100%), url('/assets/images/backpic/back-2.png') center/cover;
            color: #e2e8f0;
        }

        .hero-banner::after {
            content: "";
            position: absolute;
            inset: auto 0 0 0;
            height: 80px;
            background: linear-gradient(180deg, transparent, rgba(15, 23, 42, .35));
            pointer-events: none;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 16px;
            border-radius: 999px;
            background: rgba(245, 158, 11, .16);
            border: 1px solid rgba(245, 158, 11, .35);
            color: #fde68a;
            font-size: .82rem;
            font-weight: 600;
            margin-bottom: 18px;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: .88rem;
            color: #94a3b8;
            margin-bottom: 20px;
        }

        .breadcrumb a {
            color: #cbd5e1;
            transition: color var(--transition);
        }

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

        .breadcrumb i {
            font-size: .6rem;
            color: #64748b;
        }

        .hero-title {
            max-width: 920px;
            font-size: clamp(2rem, 4vw, 3.2rem);
            line-height: 1.25;
            font-weight: 900;
            color: #fff;
            letter-spacing: -0.5px;
            margin-bottom: 26px;
        }

        .hero-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 18px;
            color: #a5b4fc;
            font-size: .92rem;
        }

        .hero-meta span {
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

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

        .article-section {
            padding: 80px 0;
            background: var(--bg);
        }

        .article-grid {
            display: grid;
            grid-template-columns: minmax(0, 1fr) 360px;
            gap: 40px;
            align-items: start;
        }

        .article-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 44px;
        }

        .article-content {
            font-size: 1.05rem;
            line-height: 2;
            color: #334155;
        }

        .article-content h2,
        .article-content h3,
        .article-content h4 {
            color: var(--dark);
            font-weight: 800;
            line-height: 1.4;
            margin-top: 38px;
            margin-bottom: 14px;
        }

        .article-content h2 {
            font-size: 1.6rem;
            border-left: 4px solid var(--accent);
            padding-left: 16px;
        }

        .article-content h3 {
            font-size: 1.3rem;
        }

        .article-content p {
            margin-bottom: 18px;
        }

        .article-content a {
            color: var(--primary);
            border-bottom: 1px solid rgba(79, 70, 229, .35);
            transition: border-color var(--transition), color var(--transition);
        }

        .article-content a:hover {
            color: var(--primary-dark);
            border-bottom-color: var(--primary);
        }

        .article-content img {
            border-radius: var(--radius-sm);
            box-shadow: var(--shadow);
            margin: 26px 0;
        }

        .article-content ul,
        .article-content ol {
            margin: 20px 0 24px;
            padding-left: 22px;
        }

        .article-content ul {
            list-style: disc;
        }

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

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

        .article-content blockquote {
            margin: 26px 0;
            padding: 20px 24px;
            border-radius: var(--radius-sm);
            background: #f1f5f9;
            border-left: 4px solid var(--primary);
            color: var(--dark-soft);
        }

        .article-tags {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 10px;
            margin-top: 36px;
            padding-top: 26px;
            border-top: 1px solid var(--border);
        }

        .tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 14px;
            border-radius: 999px;
            background: #f1f5f9;
            color: #475569;
            font-size: .82rem;
            font-weight: 600;
            transition: background var(--transition), color var(--transition), transform var(--transition);
        }

        .tag:hover {
            background: #e0e7ff;
            color: var(--primary);
            transform: translateY(-1px);
        }

        .sidebar-sticky {
            position: sticky;
            top: 100px;
            display: flex;
            flex-direction: column;
            gap: 24px;
        }

        .side-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            overflow: hidden;
        }

        .side-title {
            padding: 18px 22px;
            font-size: 1.02rem;
            font-weight: 800;
            color: var(--dark);
            border-bottom: 1px solid var(--border);
            background: #f8fafc;
        }

        .side-nav {
            display: flex;
            flex-direction: column;
            padding: 12px;
        }

        .side-nav a {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 13px 16px;
            border-radius: var(--radius-sm);
            color: #334155;
            font-weight: 600;
            transition: background var(--transition), color var(--transition), transform var(--transition);
        }

        .side-nav a:hover {
            background: #eef2ff;
            color: var(--primary);
            transform: translateX(4px);
        }

        .side-nav i {
            width: 32px;
            height: 32px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 10px;
            background: #eef2ff;
            color: var(--primary);
            font-size: .9rem;
        }

        .side-feature img {
            width: 100%;
            height: 150px;
            object-fit: cover;
            border-radius: var(--radius-sm) var(--radius-sm) 0 0;
        }

        .side-feature-body {
            padding: 20px;
        }

        .side-feature-body h3 {
            font-size: 1.08rem;
            margin: 12px 0 8px;
            color: var(--dark);
            font-weight: 800;
        }

        .side-feature-body p {
            font-size: .88rem;
            color: var(--muted);
            margin-bottom: 16px;
        }

        .not-found-card {
            max-width: 680px;
            margin: 0 auto;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 70px 40px;
            text-align: center;
        }

        .not-found-card i {
            font-size: 3rem;
            color: var(--accent);
            margin-bottom: 20px;
        }

        .not-found-card h1 {
            font-size: 2rem;
            font-weight: 900;
            color: var(--dark);
            margin-bottom: 12px;
        }

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

        .topic-section {
            padding: 80px 0;
            background: #fff;
            border-top: 1px solid var(--border);
        }

        .section-heading {
            text-align: center;
            max-width: 640px;
            margin: 0 auto 48px;
        }

        .section-eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 14px;
            border-radius: 999px;
            background: #eef2ff;
            color: var(--primary);
            font-size: .8rem;
            font-weight: 700;
            margin-bottom: 14px;
        }

        .section-heading h2 {
            font-size: clamp(1.8rem, 3vw, 2.6rem);
            color: var(--dark);
            font-weight: 900;
            line-height: 1.25;
            margin-bottom: 12px;
        }

        .section-heading p {
            color: var(--muted);
            font-size: 1rem;
        }

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

        .topic-card {
            position: relative;
            display: block;
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            transition: transform var(--transition), box-shadow var(--transition);
            min-height: 260px;
        }

        .topic-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-lg);
        }

        .topic-card img {
            width: 100%;
            height: 260px;
            object-fit: cover;
            transition: transform .6s ease;
        }

        .topic-card:hover img {
            transform: scale(1.06);
        }

        .topic-overlay {
            position: absolute;
            inset: 0;
            display: flex;
            flex-direction: column;
            justify-content: flex-end;
            padding: 26px;
            background: linear-gradient(180deg, rgba(15, 23, 42, .05) 40%, rgba(15, 23, 42, .88) 100%);
            color: #fff;
        }

        .topic-overlay span {
            display: inline-flex;
            width: fit-content;
            padding: 5px 12px;
            border-radius: 999px;
            background: rgba(245, 158, 11, .92);
            color: #0f172a;
            font-size: .8rem;
            font-weight: 800;
            margin-bottom: 10px;
        }

        .topic-overlay p {
            font-size: .95rem;
            color: rgba(255, 255, 255, .82);
        }

        .faq-section {
            padding: 80px 0;
            background: var(--bg);
        }

        .faq-layout {
            display: grid;
            grid-template-columns: 1fr 2fr;
            gap: 40px;
            align-items: start;
        }

        .faq-intro {
            background: linear-gradient(140deg, var(--primary), var(--primary-dark));
            border-radius: var(--radius);
            padding: 36px;
            color: #fff;
            box-shadow: var(--shadow);
        }

        .faq-intro h2 {
            font-size: 1.9rem;
            font-weight: 900;
            margin-bottom: 12px;
        }

        .faq-intro p {
            color: rgba(255, 255, 255, .85);
        }

        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .faq-item {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 24px 28px;
            box-shadow: 0 6px 18px rgba(2, 6, 23, .04);
            transition: box-shadow var(--transition), border-color var(--transition), transform var(--transition);
        }

        .faq-item:hover {
            border-color: rgba(79, 70, 229, .3);
            box-shadow: var(--shadow);
            transform: translateY(-3px);
        }

        .faq-item h3 {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.06rem;
            font-weight: 800;
            color: var(--dark);
            margin-bottom: 8px;
        }

        .faq-item h3 i {
            color: var(--accent);
        }

        .faq-item p {
            color: var(--muted);
            font-size: .95rem;
            line-height: 1.8;
        }

        .cta-section {
            padding: 90px 0;
            background: linear-gradient(135deg, rgba(15, 23, 42, .94), rgba(79, 70, 229, .82)), url('/assets/images/backpic/back-1.png') center/cover;
            color: #fff;
            text-align: center;
        }

        .cta-section h2 {
            font-size: clamp(1.9rem, 4vw, 2.8rem);
            font-weight: 900;
            margin-bottom: 14px;
        }

        .cta-section p {
            max-width: 560px;
            margin: 0 auto 32px;
            color: rgba(255, 255, 255, .84);
        }

        .cta-buttons {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 14px;
        }

        .site-footer {
            background: #0b1120;
            color: #94a3b8;
            padding: 72px 0 28px;
        }

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

        .footer-logo {
            font-size: 1.5rem;
            font-weight: 900;
            background: linear-gradient(135deg, var(--accent-light), var(--accent));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            margin-bottom: 16px;
        }

        .footer-brand p {
            max-width: 340px;
            color: #7c8ba1;
            font-size: .92rem;
            line-height: 1.8;
        }

        .footer-col h4 {
            color: #e2e8f0;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 18px;
        }

        .footer-col a {
            display: block;
            color: #94a3b8;
            font-size: .9rem;
            margin-bottom: 12px;
            transition: color var(--transition), transform var(--transition);
            width: fit-content;
        }

        .footer-col a:hover {
            color: var(--accent-light);
            transform: translateX(4px);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .08);
            margin-top: 52px;
            padding-top: 24px;
            text-align: center;
            font-size: .84rem;
            color: #64748b;
        }

        @media (max-width: 1024px) {
            .article-grid {
                grid-template-columns: 1fr;
            }

            .sidebar-sticky {
                position: static;
                flex-direction: row;
                flex-wrap: wrap;
            }

            .side-card {
                flex: 1 1 260px;
            }

            .topic-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .faq-layout {
                grid-template-columns: 1fr;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .nav-menu {
                position: fixed;
                top: 76px;
                left: 20px;
                right: 20px;
                display: none;
                flex-direction: column;
                align-items: stretch;
                gap: 6px;
                background: rgba(15, 23, 42, .98);
                border: 1px solid rgba(255, 255, 255, .1);
                border-radius: 20px;
                padding: 16px;
                box-shadow: 0 30px 60px rgba(0, 0, 0, .5);
                z-index: 99;
            }

            .nav-menu.open {
                display: flex;
            }

            .nav-link {
                justify-content: flex-start;
                padding: 12px 16px;
            }

            .nav-cta {
                display: none;
            }

            .nav-toggle {
                display: inline-flex;
            }

            .hero-banner {
                padding: 76px 0 64px;
            }

            .hero-title {
                font-size: 1.9rem;
            }

            .article-section {
                padding: 56px 0;
            }

            .article-card {
                padding: 24px;
            }

            .topic-section,
            .faq-section,
            .cta-section {
                padding: 56px 0;
            }

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

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }

            .site-logo a {
                font-size: 1.2rem;
            }

            .hero-title {
                font-size: 1.55rem;
            }

            .hero-meta {
                flex-direction: column;
                align-items: flex-start;
                gap: 10px;
            }

            .article-card {
                border-radius: 18px;
            }

            .article-tags {
                gap: 8px;
            }

            .topic-grid {
                grid-template-columns: 1fr;
            }

            .topic-card,
            .topic-card img {
                min-height: 220px;
                height: 220px;
            }

            .faq-item {
                padding: 20px;
            }

            .cta-buttons {
                flex-direction: column;
                align-items: center;
            }

            .cta-buttons .btn-primary,
            .cta-buttons .btn-light {
                width: 100%;
            }

            .footer-bottom {
                line-height: 1.6;
            }
        }

        @media (prefers-reduced-motion: reduce) {
            * {
                animation-duration: 0.01ms !important;
                transition-duration: 0.01ms !important;
                scroll-behavior: auto;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #4f46e5;
            --primary-dark: #3730a3;
            --primary-light: #818cf8;
            --accent: #f59e0b;
            --bg: #f8fafc;
            --bg-alt: #f1f5f9;
            --bg-dark: #0f172a;
            --text: #1e293b;
            --text-light: #64748b;
            --border: #e2e8f0;
            --radius: 16px;
            --radius-sm: 10px;
            --shadow-sm: 0 1px 3px rgba(0,0,0,.08);
            --shadow-md: 0 4px 16px rgba(0,0,0,.08);
            --shadow-lg: 0 12px 32px rgba(0,0,0,.12);
            --transition: all .3s cubic-bezier(.4,0,.2,1);
        }
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body {
            font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.75;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }
        .container { max-width: 1240px; margin: 0 auto; padding: 0 24px; }
        a { text-decoration: none; color: inherit; transition: var(--transition); }
        img { max-width: 100%; height: auto; display: block; }
        button, input, select { font-family: inherit; outline: none; }

        /* === header === */
        .site-header {
            position: sticky; top: 0; z-index: 50;
            background: rgba(255,255,255,.92);
            backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border);
            height: 72px;
        }
        .nav-wrapper { display: flex; align-items: center; justify-content: space-between; height: 72px; gap: 20px; }
        .site-logo a {
            font-size: 1.4rem; font-weight: 800;
            background: linear-gradient(135deg, var(--primary) 20%, #9333ea 80%);
            -webkit-background-clip: text; background-clip: text;
            -webkit-text-fill-color: transparent;
            letter-spacing: .5px;
        }
        .nav-menu { display: flex; align-items: center; gap: 8px; }
        .nav-menu .nav-link {
            font-size: .92rem; font-weight: 500;
            color: var(--text-light);
            padding: 8px 18px;
            border-radius: 999px;
            transition: var(--transition);
        }
        .nav-menu .nav-link:hover { color: var(--primary); background: rgba(79,70,229,.08); }
        .nav-menu .nav-link.active { color: var(--primary); background: rgba(79,70,229,.1); font-weight: 600; }
        .nav-cta .btn-primary {
            display: inline-flex; align-items: center; gap: 6px;
            background: linear-gradient(135deg, var(--primary), #7c3aed);
            color: #fff; font-weight: 600; font-size: .88rem;
            padding: 10px 20px; border-radius: 999px;
            box-shadow: 0 4px 14px rgba(79,70,229,.3);
            transition: var(--transition);
        }
        .nav-cta .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(79,70,229,.4);
        }
        .nav-toggle { display: none; background: none; border: none; font-size: 1.3rem; color: var(--text); cursor: pointer; }

        /* === hero === */
        .category-hero {
            position: relative;
            padding: 88px 0 72px;
            background:
                linear-gradient(rgba(15,23,42,.75), rgba(30,27,75,.85)),
                url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            color: #fff;
            overflow: hidden;
        }
        .category-hero h1 { font-size: clamp(2rem, 5vw, 3.2rem); font-weight: 800; letter-spacing: 2px; }
        .category-hero p { font-size: 1.05rem; color: rgba(255,255,255,.8); max-width: 720px; line-height: 1.8; }
        .hero-badges { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 24px; }
        .hero-badges .hero-badge {
            background: rgba(255,255,255,.15);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255,255,255,.2);
            padding: 8px 18px; border-radius: 999px;
            font-size: .85rem; font-weight: 500;
        }

        /* === section common === */
        .page-section { padding: 76px 0; }
        .page-section.bg-alt { background: var(--bg-alt); }
        .section-head { max-width: 760px; margin: 0 auto 44px; text-align: center; }
        .section-head .section-tag {
            display: inline-block; background: rgba(79,70,229,.08);
            color: var(--primary); font-size: .8rem; font-weight: 700;
            padding: 6px 16px; border-radius: 999px; margin-bottom: 14px;
            text-transform: uppercase; letter-spacing: 1px;
        }
        .section-head h2 { font-size: clamp(1.6rem, 3.5vw, 2.4rem); font-weight: 800; color: var(--text); line-height: 1.3; }
        .section-head .section-sub { color: var(--text-light); margin-top: 12px; font-size: .98rem; }

        /* === game cards === */
        .game-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
        .game-card {
            background: #fff; border-radius: var(--radius);
            overflow: hidden; border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            position: relative;
        }
        .game-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(79,70,229,.3);
        }
        .game-card .game-cover { position: relative; height: 190px; overflow: hidden; }
        .game-card .game-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s ease; }
        .game-card:hover .game-cover img { transform: scale(1.05); }
        .game-card .game-tag {
            position: absolute; top: 14px; left: 14px;
            background: rgba(15,23,42,.7); backdrop-filter: blur(8px);
            color: #fff; font-size: .75rem; font-weight: 600;
            padding: 5px 14px; border-radius: 999px;
            backdrop-filter: blur(6px);
        }
        .game-card .game-tag.hot { background: linear-gradient(135deg, #f59e0b, #ef4444); }
        .game-card .game-body { padding: 22px; }
        .game-card .game-body h3 { font-size: 1.15rem; font-weight: 700; margin-bottom: 8px; }
        .game-card .game-body p { font-size: .88rem; color: var(--text-light); line-height: 1.7; }
        .game-card .game-meta { display: flex; align-items: center; gap: 16px; justify-content: space-between; margin-top: 16px; padding-top: 14px; border-top: 1px solid var(--border); }
        .game-rating { color: var(--accent); font-size: .85rem; font-weight: 600; }
        .game-cat { font-size: .8rem; color: var(--text-light); background: var(--bg-alt); padding: 4px 12px; border-radius: 999px; }

        /* === rank list === */
        .rank-list { display: flex; flex-direction: column; gap: 14px; }
        .rank-item {
            display: flex; align-items: center; gap: 20px;
            background: #fff; border: 1px solid var(--border);
            padding: 16px 20px; border-radius: var(--radius-sm);
            transition: var(--transition);
            cursor: pointer;
        }
        .rank-item:hover { box-shadow: var(--shadow-md); border-color: rgba(79,70,229,.3); transform: translateX(4px); }
        .rank-num {
            font-size: 1.3rem; font-weight: 800;
            width: 40px; height: 40px; display: flex; align-items: center; justify-content: center;
            border-radius: 12px; background: var(--bg-alt); color: var(--primary);
            flex-shrink: 0;
        }
        .rank-item:nth-child(1) .rank-num { background: linear-gradient(135deg, #f59e0b, #fbbf24); color: #fff; }
        .rank-item:nth-child(2) .rank-num { background: linear-gradient(135deg, #94a3b8, #cbd5e1); color: #fff; }
        .rank-item:nth-child(3) .rank-num { background: linear-gradient(135deg, #d97706, #f59e0b); color: #fff; }
        .rank-info { flex: 1; }
        .rank-info h4 { font-weight: 700; font-size: 1rem; }
        .rank-info p { font-size: .82rem; color: var(--text-light); margin-top: 2px; }
        .rank-tag { display: flex; gap: 8px; flex-wrap: wrap; }
        .rank-tag span { font-size: .75rem; background: var(--bg-alt); padding: 4px 10px; border-radius: 999px; color: var(--text-light); }

        /* === data blocks === */
        .stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
        .stat-card {
            background: #fff; border: 1px solid var(--border);
            border-radius: var(--radius); padding: 28px 20px;
            text-align: center; transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .stat-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); }
        .stat-card .stat-num { font-size: 2rem; font-weight: 800; color: var(--primary); }
        .stat-card .stat-label { font-size: .88rem; color: var(--text-light); margin-top: 6px; }

        /* === feature strip === */
        .feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
        .feature-item {
            background: #fff; border-radius: var(--radius);
            padding: 32px 28px; border: 1px solid var(--border);
            transition: var(--transition); position: relative;
            overflow: hidden;
        }
        .feature-item::before {
            content: ''; position: absolute; top: 0; left: 0;
            width: 100%; height: 4px;
            background: linear-gradient(90deg, var(--primary), #7c3aed);
            opacity: 0; transition: var(--transition);
        }
        .feature-item:hover::before { opacity: 1; }
        .feature-item:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
        .feature-item .feature-icon {
            width: 56px; height: 56px; border-radius: 16px;
            background: linear-gradient(135deg, rgba(79,70,229,.1), rgba(147,51,234,.1));
            display: flex; align-items: center; justify-content: center;
            font-size: 1.5rem; color: var(--primary);
            margin-bottom: 18px;
        }
        .feature-item h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: 8px; }
        .feature-item p { font-size: .88rem; color: var(--text-light); }

        /* === cta panel === */
        .cta-panel {
            background: linear-gradient(135deg, #1e1b4b 0%, #312e81 60%, #4f46e5 100%);
            border-radius: 24px; padding: 52px 48px;
            color: #fff; position: relative; overflow: hidden;
        }
        .cta-panel::after {
            content: ''; position: absolute; right: -60px; top: -60px;
            width: 220px; height: 220px; border-radius: 50%;
            background: rgba(255,255,255,.05);
        }
        .cta-panel h3 { font-size: 1.8rem; font-weight: 800; line-height: 1.3; }
        .cta-panel p { color: rgba(255,255,255,.8); margin-top: 10px; }
        .cta-btn {
            display: inline-flex; align-items: center; gap: 8px;
            background: #fff; color: var(--primary);
            font-weight: 700; padding: 14px 32px; border-radius: 999px;
            font-size: .95rem; transition: var(--transition);
            box-shadow: 0 4px 20px rgba(0,0,0,.2);
            margin-top: 24px;
        }
        .cta-btn:hover { transform: translateY(-3px); box-shadow: 0 8px 30px rgba(0,0,0,.3); }

        /* === faq === */
        .faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 14px; }
        .faq-item {
            background: #fff; border: 1px solid var(--border);
            border-radius: var(--radius-sm); padding: 0;
            transition: var(--transition); overflow: hidden;
        }
        .faq-item summary {
            cursor: pointer; padding: 20px 24px;
            font-weight: 600; font-size: .98rem;
            list-style: none; display: flex; align-items: center; justify-content: space-between;
            transition: var(--transition);
        }
        .faq-item summary::-webkit-details-marker { display: none; }
        .faq-item summary::after {
            content: '+'; font-size: 1.4rem; color: var(--primary);
            font-weight: 400; transition: transform .3s;
        }
        .faq-item[open] summary { color: var(--primary); }
        .faq-item[open] summary::after { transform: rotate(45deg); }
        .faq-item .faq-content { padding: 0 24px 20px; color: var(--text-light); font-size: .9rem; }

        /* === footer === */
        .site-footer { background: var(--bg-dark); color: rgba(255,255,255,.7); padding: 64px 0 0; }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; padding-bottom: 40px; }
        .footer-logo { font-size: 1.3rem; font-weight: 800; color: #fff; margin-bottom: 12px; }
        .footer-brand p { font-size: .88rem; line-height: 1.8; max-width: 320px; }
        .footer-col h4 { color: #fff; font-size: .95rem; font-weight: 600; margin-bottom: 16px; }
        .footer-col a { display: block; font-size: .85rem; padding: 6px 0; color: rgba(255,255,255,.6); }
        .footer-col a:hover { color: #fff; transform: translateX(4px); }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,.1);
            padding: 20px 0; text-align: center; font-size: .82rem;
            color: rgba(255,255,255,.4);
        }

        /* === mobile === */
        @media (max-width: 1024px) {
            .game-grid { grid-template-columns: repeat(2, 1fr); }
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
            .feature-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: repeat(2, 1fr); gap: 32px; }
        }
        @media (max-width: 768px) {
            .nav-toggle { display: block; }
            .nav-menu {
                position: absolute; top: 72px; left: 0; right: 0;
                background: #fff; flex-direction: column;
                padding: 20px 24px; gap: 4px;
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow-lg);
                display: none;
            }
            .nav-menu.open { display: flex; }
            .nav-menu .nav-link { width: 100%; padding: 12px 18px; }
            .nav-cta { display: none; }
            .category-hero { padding: 56px 0 48px; }
            .page-section { padding: 52px 0; }
            .cta-panel { padding: 36px 24px; }
            .cta-panel h3 { font-size: 1.4rem; }
        }
        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            .game-grid { grid-template-columns: 1fr; }
            .feature-grid { grid-template-columns: 1fr; }
            .stats-grid { grid-template-columns: 1fr 1fr; gap: 14px; }
            .footer-grid { grid-template-columns: 1fr; gap: 28px; }
            .rank-item { flex-wrap: wrap; gap: 12px; }
            .rank-tag { width: 100%; }
            .site-logo a { font-size: 1.15rem; }
            .category-hero h1 { font-size: 1.7rem; }
        }

/* roulang page: category3 */
:root {
            --font-main: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
            --color-primary: #2563eb;
            --color-primary-dark: #1e40af;
            --color-accent: #f59e0b;
            --color-dark: #0f172a;
            --color-dark-soft: #1e293b;
            --color-bg: #f1f5f9;
            --color-card: #ffffff;
            --color-text: #1e293b;
            --color-muted: #64748b;
            --color-border: #e2e8f0;
            --radius-lg: 24px;
            --radius-md: 16px;
            --radius-sm: 10px;
            --shadow-sm: 0 4px 12px rgba(15, 23, 42, .06);
            --shadow-lg: 0 16px 40px rgba(15, 23, 42, .12);
            --transition: .3s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-main);
            background: var(--color-bg);
            color: var(--color-text);
            line-height: 1.7;
            margin: 0;
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            color: inherit;
            text-decoration: none;
        }

        button {
            font-family: inherit;
        }

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

        /* ========== Header / Nav ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            padding: 18px 0 8px;
            transition: padding .3s ease;
        }

        .site-header.scrolled {
            padding: 8px 0;
        }

        .nav-wrapper {
            display: flex;
            align-items: center;
            gap: 24px;
            background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
            border-radius: 18px;
            padding: 12px 20px;
            box-shadow: 0 14px 34px rgba(15, 23, 42, .28);
            border: 1px solid rgba(255, 255, 255, .07);
        }

        .site-logo a {
            position: relative;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 800;
            color: #ffffff;
            letter-spacing: .5px;
            white-space: nowrap;
            transition: color .3s;
        }

        .site-logo a::before {
            content: '';
            width: 34px;
            height: 34px;
            border-radius: 10px;
            background: linear-gradient(135deg, #fbbf24, #d97706);
            box-shadow: 0 6px 16px rgba(245, 158, 11, .35);
            flex-shrink: 0;
        }

        .site-logo a:hover {
            color: #fbbf24;
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 6px;
            margin-left: auto;
        }

        .nav-link {
            position: relative;
            color: rgba(255, 255, 255, .78);
            font-size: 15px;
            font-weight: 500;
            padding: 8px 16px;
            border-radius: 12px;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .nav-link:hover {
            color: #ffffff;
            background: rgba(255, 255, 255, .08);
        }

        .nav-link.active {
            color: #0f172a;
            background: linear-gradient(135deg, #fbbf24, #f59e0b);
            font-weight: 700;
            box-shadow: 0 6px 18px rgba(245, 158, 11, .35);
        }

        .nav-cta {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 9px 18px;
            border-radius: 12px;
            background: linear-gradient(135deg, #f59e0b, #d97706);
            color: #0f172a;
            font-weight: 700;
            font-size: 14px;
            box-shadow: 0 6px 16px rgba(245, 158, 11, .28);
            transition: all var(--transition);
            white-space: nowrap;
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 24px rgba(245, 158, 11, .42);
        }

        .btn-primary:active {
            transform: translateY(0);
        }

        .nav-toggle {
            display: none;
            background: transparent;
            border: 1px solid rgba(255, 255, 255, .22);
            color: #ffffff;
            width: 42px;
            height: 42px;
            border-radius: 12px;
            font-size: 18px;
            cursor: pointer;
            align-items: center;
            justify-content: center;
            transition: all .3s;
        }

        .nav-toggle:hover {
            background: rgba(255, 255, 255, .1);
        }

        /* ========== Hero ========== */
        .page-hero {
            position: relative;
            padding: 130px 0 80px;
            background-size: cover;
            background-position: center;
            display: flex;
            align-items: center;
        }

        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(115deg, rgba(15, 23, 42, .94) 0%, rgba(30, 58, 138, .78) 100%);
        }

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

        .hero-breadcrumb {
            display: flex;
            align-items: center;
            gap: 10px;
            color: rgba(255, 255, 255, .6);
            font-size: 14px;
            margin-bottom: 22px;
        }

        .hero-breadcrumb a {
            color: rgba(255, 255, 255, .6);
            transition: color .3s;
        }

        .hero-breadcrumb a:hover {
            color: #fbbf24;
        }

        .hero-breadcrumb i {
            font-size: 10px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, .12);
            border: 1px solid rgba(255, 255, 255, .18);
            backdrop-filter: blur(8px);
            color: #fbbf24;
            font-weight: 600;
            padding: 8px 16px;
            border-radius: 999px;
            font-size: 14px;
            margin-bottom: 22px;
        }

        .hero-inner h1 {
            font-size: 50px;
            line-height: 1.15;
            font-weight: 900;
            color: #ffffff;
            margin-bottom: 20px;
            letter-spacing: -.02em;
            max-width: 720px;
        }

        .hero-inner .hero-desc {
            font-size: 18px;
            color: rgba(255, 255, 255, .78);
            line-height: 1.8;
            max-width: 620px;
            margin-bottom: 34px;
        }

        .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }

        .btn-primary-lg {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 28px;
            border-radius: 14px;
            background: linear-gradient(135deg, #f59e0b, #d97706);
            color: #0f172a;
            font-weight: 700;
            font-size: 15px;
            box-shadow: 0 10px 26px rgba(245, 158, 11, .35);
            transition: all var(--transition);
        }

        .btn-primary-lg:hover {
            transform: translateY(-3px);
            box-shadow: 0 16px 34px rgba(245, 158, 11, .45);
        }

        .btn-outline-light {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 26px;
            border-radius: 14px;
            border: 1.5px solid rgba(255, 255, 255, .4);
            color: #ffffff;
            font-weight: 600;
            font-size: 15px;
            backdrop-filter: blur(6px);
            transition: all var(--transition);
        }

        .btn-outline-light:hover {
            background: rgba(255, 255, 255, .12);
            border-color: #fbbf24;
            color: #fbbf24;
        }

        .hero-stats {
            display: flex;
            gap: 48px;
            margin-top: 50px;
            padding-top: 30px;
            border-top: 1px solid rgba(255, 255, 255, .14);
        }

        .stat-item strong {
            display: block;
            font-size: 28px;
            font-weight: 800;
            color: #fbbf24;
            line-height: 1.2;
        }

        .stat-item span {
            font-size: 14px;
            color: rgba(255, 255, 255, .6);
        }

        /* ========== Section 通用 ========== */
        .section {
            padding: 90px 0;
        }

        .section-alt {
            background: #ffffff;
        }

        .section-head {
            text-align: center;
            max-width: 700px;
            margin: 0 auto 56px;
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: #eff6ff;
            color: #2563eb;
            font-size: 13px;
            font-weight: 700;
            letter-spacing: .12em;
            padding: 7px 16px;
            border-radius: 999px;
            margin-bottom: 16px;
        }

        .section-title {
            font-size: 36px;
            font-weight: 800;
            line-height: 1.25;
            letter-spacing: -.01em;
            margin-bottom: 14px;
        }

        .section-desc {
            color: var(--color-muted);
            font-size: 16px;
            line-height: 1.8;
        }

        /* ========== 服务卡片 ========== */
        .service-card {
            background: #ffffff;
            border: 1px solid var(--color-border);
            border-radius: 22px;
            padding: 34px 28px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            height: 100%;
        }

        .service-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(37, 99, 235, .3);
        }

        .icon-chip {
            width: 56px;
            height: 56px;
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            background: linear-gradient(135deg, #eff6ff, #dbeafe);
            color: #2563eb;
            margin-bottom: 20px;
            transition: all var(--transition);
        }

        .service-card:hover .icon-chip {
            background: linear-gradient(135deg, #2563eb, #1e40af);
            color: #ffffff;
            box-shadow: 0 10px 22px rgba(37, 99, 235, .3);
            transform: scale(1.05);
        }

        .service-card h3 {
            font-size: 19px;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .service-card p {
            font-size: 15px;
            color: var(--color-muted);
            line-height: 1.75;
            margin-bottom: 18px;
        }

        .tag-list {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .tag-item {
            display: inline-block;
            background: #f8fafc;
            border: 1px solid #e9edf3;
            color: #475569;
            font-size: 12.5px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 999px;
            transition: all .3s;
        }

        .service-card:hover .tag-item {
            background: #eff6ff;
            border-color: #bfdbfe;
            color: #2563eb;
        }

        /* ========== 图文详情 ========== */
        .detail-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
            padding: 24px 0;
        }

        .detail-block + .detail-block {
            margin-top: 30px;
        }

        .detail-image {
            border-radius: 24px;
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            position: relative;
        }

        .detail-image img {
            width: 100%;
            height: 380px;
            object-fit: cover;
            transition: transform .6s ease;
        }

        .detail-block:hover .detail-image img {
            transform: scale(1.04);
        }

        .detail-image::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(160deg, transparent 55%, rgba(15, 23, 42, .35));
        }

        .detail-content .detail-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: #2563eb;
            font-size: 14px;
            font-weight: 700;
            letter-spacing: .06em;
            margin-bottom: 12px;
        }

        .detail-content h3 {
            font-size: 28px;
            font-weight: 800;
            margin-bottom: 16px;
            line-height: 1.3;
        }

        .detail-content .detail-desc {
            color: var(--color-muted);
            line-height: 1.85;
            font-size: 15.5px;
            margin-bottom: 22px;
        }

        .detail-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .detail-list li {
            display: flex;
            gap: 12px;
            align-items: flex-start;
            padding: 10px 0;
            border-bottom: 1px dashed var(--color-border);
            font-size: 15px;
            color: #334155;
        }

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

        .detail-list li i {
            color: #2563eb;
            margin-top: 5px;
            font-size: 14px;
        }

        /* ========== 服务流程 ========== */
        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            position: relative;
        }

        .process-item {
            text-align: center;
            padding: 36px 22px 34px;
            background: #ffffff;
            border-radius: 22px;
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-sm);
            position: relative;
            transition: all var(--transition);
        }

        .process-item:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-lg);
        }

        .process-item::after {
            content: '';
            position: absolute;
            top: 50%;
            right: -24px;
            width: 24px;
            height: 0;
            border-top: 2px dashed #cbd5e1;
            z-index: 1;
        }

        .process-item:last-child::after {
            display: none;
        }

        .process-num {
            width: 58px;
            height: 58px;
            margin: 0 auto 18px;
            border-radius: 50%;
            background: linear-gradient(135deg, #f59e0b, #d97706);
            color: #ffffff;
            font-weight: 800;
            font-size: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 10px 22px rgba(245, 158, 11, .3);
        }

        .process-item h4 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .process-item p {
            font-size: 14px;
            color: var(--color-muted);
            line-height: 1.7;
            margin: 0;
        }

        /* ========== 数据带 ========== */
        .metrics-section {
            padding: 20px 0 90px;
        }

        .metrics-band {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            background-image: linear-gradient(135deg, rgba(15, 23, 42, .95), rgba(30, 41, 59, .9)), url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            border-radius: 28px;
            padding: 60px 44px;
            box-shadow: 0 24px 50px rgba(15, 23, 42, .2);
        }

        .metric {
            text-align: center;
        }

        .metric-value {
            font-size: 42px;
            font-weight: 900;
            color: #fbbf24;
            line-height: 1.15;
        }

        .metric-label {
            color: rgba(255, 255, 255, .68);
            margin-top: 10px;
            font-size: 15px;
        }

        /* ========== FAQ ========== */
        .faq-section {
            background: #ffffff;
        }

        .faq-list {
            max-width: 860px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .faq-item {
            background: #ffffff;
            border: 1px solid var(--color-border);
            border-radius: 16px;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: border-color .3s, box-shadow .3s;
        }

        .faq-item.open {
            border-color: rgba(37, 99, 235, .35);
            box-shadow: var(--shadow-lg);
        }

        .faq-question {
            width: 100%;
            padding: 20px 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            font-weight: 600;
            font-size: 16px;
            cursor: pointer;
            background: transparent;
            border: none;
            color: var(--color-text);
            text-align: left;
            transition: color .3s;
        }

        .faq-question:hover {
            color: #2563eb;
        }

        .faq-icon {
            width: 30px;
            height: 30px;
            flex-shrink: 0;
            border-radius: 9px;
            background: #eff6ff;
            color: #2563eb;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            transition: transform .35s, background .3s, color .3s;
        }

        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            background: #2563eb;
            color: #ffffff;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .45s ease, padding .3s ease;
            padding: 0 24px;
            color: var(--color-muted);
            font-size: 15px;
            line-height: 1.85;
        }

        .faq-item.open .faq-answer {
            max-height: 260px;
            padding: 0 24px 22px;
        }

        /* ========== CTA ========== */
        .cta-section {
            padding: 20px 0 90px;
        }

        .cta-box {
            position: relative;
            overflow: hidden;
            background: linear-gradient(135deg, #1e40af, #2563eb);
            border-radius: 30px;
            padding: 58px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 40px;
            color: #ffffff;
            box-shadow: 0 24px 50px rgba(37, 99, 235, .3);
        }

        .cta-box::before {
            content: '';
            position: absolute;
            width: 280px;
            height: 280px;
            border-radius: 50%;
            background: rgba(255, 255, 255, .09);
            top: -90px;
            right: -60px;
        }

        .cta-box::after {
            content: '';
            position: absolute;
            width: 160px;
            height: 160px;
            border-radius: 50%;
            background: rgba(255, 255, 255, .06);
            bottom: -50px;
            left: 38%;
        }

        .cta-content {
            position: relative;
            z-index: 1;
        }

        .cta-content h3 {
            font-size: 32px;
            font-weight: 800;
            margin-bottom: 12px;
        }

        .cta-content p {
            color: rgba(255, 255, 255, .82);
            font-size: 16px;
            line-height: 1.8;
        }

        .cta-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            position: relative;
            z-index: 1;
            flex-shrink: 0;
        }

        .btn-white {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 28px;
            border-radius: 14px;
            background: #ffffff;
            color: #1e40af;
            font-weight: 700;
            font-size: 15px;
            box-shadow: 0 10px 24px rgba(0, 0, 0, .15);
            transition: all var(--transition);
        }

        .btn-white:hover {
            transform: translateY(-3px);
            box-shadow: 0 16px 34px rgba(255, 255, 255, .25);
        }

        .btn-ghost {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 26px;
            border-radius: 14px;
            border: 1.5px solid rgba(255, 255, 255, .5);
            color: #ffffff;
            font-weight: 600;
            font-size: 15px;
            transition: all var(--transition);
        }

        .btn-ghost:hover {
            background: rgba(255, 255, 255, .12);
            border-color: #ffffff;
        }

        /* ========== Footer ========== */
        .site-footer {
            background: #0f172a;
            color: #8296b0;
            padding: 70px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 44px;
            padding-bottom: 48px;
        }

        .footer-logo {
            font-size: 22px;
            font-weight: 800;
            color: #ffffff;
            margin-bottom: 16px;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.85;
            color: #8296b0;
            max-width: 340px;
            margin: 0;
        }

        .footer-col h4 {
            color: #ffffff;
            font-size: 16px;
            margin-bottom: 18px;
            font-weight: 700;
        }

        .footer-col a {
            display: block;
            color: #8296b0;
            font-size: 14px;
            padding: 6px 0;
            transition: color .3s, padding-left .3s;
        }

        .footer-col a:hover {
            color: #fbbf24;
            padding-left: 4px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .08);
            padding: 22px 0;
            text-align: center;
            font-size: 13px;
            color: #64748b;
        }

        /* ========== 返回顶部 ========== */
        .back-top {
            position: fixed;
            right: 24px;
            bottom: 24px;
            width: 46px;
            height: 46px;
            border-radius: 14px;
            background: linear-gradient(135deg, #f59e0b, #d97706);
            color: #0f172a;
            border: none;
            cursor: pointer;
            font-size: 16px;
            box-shadow: 0 10px 24px rgba(245, 158, 11, .35);
            opacity: 0;
            visibility: hidden;
            transform: translateY(12px);
            transition: all .3s ease;
            z-index: 60;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .back-top.show {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }

        .back-top:hover {
            transform: translateY(-4px);
            box-shadow: 0 14px 30px rgba(245, 158, 11, .45);
        }

        /* ========== Reveal 动画 ========== */
        .reveal {
            opacity: 0;
            transform: translateY(26px);
            transition: opacity .7s ease, transform .7s ease;
        }

        .reveal.visible {
            opacity: 1;
            transform: translateY(0);
        }

        /* ========== 响应式 ========== */
        @media (max-width: 1024px) {
            .nav-cta {
                display: none;
            }
            .hero-inner h1 {
                font-size: 42px;
            }
            .detail-block {
                gap: 40px;
            }
            .detail-image img {
                height: 320px;
            }
        }

        @media (max-width: 768px) {
            .nav-toggle {
                display: flex;
            }
            .nav-menu {
                display: none;
                position: absolute;
                top: calc(100% + 12px);
                left: 0;
                right: 0;
                flex-direction: column;
                background: #0f172a;
                border-radius: 18px;
                padding: 14px;
                gap: 6px;
                box-shadow: 0 24px 44px rgba(0, 0, 0, .35);
                border: 1px solid rgba(255, 255, 255, .08);
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-link {
                width: 100%;
                text-align: center;
                padding: 11px 16px;
            }
            .nav-wrapper {
                position: relative;
                padding: 10px 14px;
            }
            .site-logo a {
                font-size: 17px;
            }
            .page-hero {
                padding: 100px 0 60px;
            }
            .hero-inner h1 {
                font-size: 30px;
            }
            .hero-inner .hero-desc {
                font-size: 16px;
            }
            .hero-stats {
                gap: 20px;
                flex-wrap: wrap;
            }
            .stat-item {
                flex: 1 1 30%;
                min-width: 100px;
            }
            .section {
                padding: 64px 0;
            }
            .section-title {
                font-size: 27px;
            }
            .detail-block {
                grid-template-columns: 1fr;
                gap: 26px;
            }
            .detail-image img {
                height: 250px;
            }
            .process-steps {
                grid-template-columns: 1fr 1fr;
                gap: 18px;
            }
            .process-item::after {
                display: none;
            }
            .metrics-band {
                grid-template-columns: 1fr 1fr;
                gap: 26px;
                padding: 44px 24px;
            }
            .metric-value {
                font-size: 32px;
            }
            .cta-box {
                flex-direction: column;
                text-align: center;
                padding: 44px 26px;
                gap: 30px;
            }
            .cta-actions {
                justify-content: center;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 30px;
            }
        }

        @media (max-width: 520px) {
            .site-logo a {
                font-size: 15px;
            }
            .nav-wrapper {
                gap: 10px;
                padding: 10px 12px;
            }
            .nav-toggle {
                width: 38px;
                height: 38px;
            }
            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .hero-actions a {
                justify-content: center;
            }
            .process-steps {
                grid-template-columns: 1fr;
            }
            .metrics-band {
                grid-template-columns: 1fr 1fr;
                padding: 36px 18px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 26px;
            }
            .cta-content h3 {
                font-size: 25px;
            }
            .btn-white,
            .btn-ghost {
                width: 100%;
                justify-content: center;
            }
        }