/* roulang page: index */
:root {
            --primary: #6c3ef8;
            --primary-dark: #5429d4;
            --primary-light: #8b6cf7;
            --secondary: #f85e3e;
            --accent: #00d4aa;
            --bg-dark: #0f0b1a;
            --bg-section: #f8f7fc;
            --bg-card: #ffffff;
            --text-primary: #1a0f3d;
            --text-secondary: #5a5278;
            --text-light: #8a84a0;
            --border-light: rgba(108, 62, 248, 0.12);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 24px;
            --shadow-sm: 0 2px 8px rgba(108, 62, 248, 0.06);
            --shadow-md: 0 8px 30px rgba(108, 62, 248, 0.1);
            --shadow-lg: 0 20px 60px rgba(108, 62, 248, 0.14);
            --glass-bg: rgba(255, 255, 255, 0.72);
            --glass-border: rgba(255, 255, 255, 0.28);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html { scroll-behavior: smooth; }

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

        img { max-width: 100%; height: auto; display: block; }
        a { text-decoration: none; color: inherit; transition: var(--transition); }
        button, input, textarea { font-family: inherit; outline: none; border: none; }
        ul { list-style: none; }

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

        h1, h2, h3, h4, h5, h6 { line-height: 1.25; font-weight: 700; color: var(--text-primary); }
        h2 { font-size: 2.4rem; margin-bottom: 0.5rem; }
        h3 { font-size: 1.5rem; }
        p { color: var(--text-secondary); }

        .section-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(108, 62, 248, 0.08);
            color: var(--primary);
            font-size: 0.8rem;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 50px;
            letter-spacing: 0.5px;
            text-transform: uppercase;
            margin-bottom: 12px;
        }

        .section-title { margin-bottom: 1rem; }
        .section-subtitle { font-size: 1.1rem; color: var(--text-secondary); max-width: 600px; }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            transition: var(--transition);
            border: 2px solid transparent;
            background: transparent;
            text-align: center;
            justify-content: center;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(108, 62, 248, 0.3);
        }
        .btn-outline {
            border-color: var(--border-light);
            color: var(--text-primary);
            background: var(--glass-bg);
            backdrop-filter: blur(6px);
        }
        .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary);
            transform: translateY(-2px);
        }
        .btn-light {
            background: #fff;
            color: var(--primary);
            border-color: #fff;
        }
        .btn-light:hover {
            background: rgba(255,255,255,0.9);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0,0,0,0.15);
        }
        .btn-sm { padding: 8px 20px; font-size: 0.85rem; }

        /* ===== 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            padding: 12px 0;
            transition: var(--transition);
            background: transparent;
        }
        .site-header.scrolled {
            background: var(--glass-bg);
            backdrop-filter: blur(18px) saturate(180%);
            -webkit-backdrop-filter: blur(18px) saturate(180%);
            border-bottom: 1px solid var(--glass-border);
            padding: 6px 0;
            box-shadow: 0 4px 30px rgba(0,0,0,0.08);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .site-logo {
            font-size: 1.6rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .site-logo span { color: var(--accent); }
        .scrolled .site-logo { color: var(--text-primary); }
        .site-logo i { font-size: 1.3rem; }

        .nav-list {
            display: flex;
            align-items: center;
            gap: 32px;
        }
        .nav-list a {
            color: rgba(255,255,255,0.85);
            font-weight: 500;
            font-size: 0.95rem;
            padding: 6px 0;
            border-bottom: 2px solid transparent;
            transition: var(--transition);
        }
        .nav-list a:hover, .nav-list a.active {
            color: #fff;
            border-bottom-color: var(--accent);
        }
        .scrolled .nav-list a { color: var(--text-secondary); }
        .scrolled .nav-list a:hover, .scrolled .nav-list a.active { color: var(--primary); border-bottom-color: var(--primary); }

        .nav-cta .btn {
            padding: 8px 22px;
            font-size: 0.85rem;
            background: var(--accent);
            color: #0f0b1a;
            border-color: var(--accent);
            font-weight: 700;
        }
        .nav-cta .btn:hover {
            background: transparent;
            color: var(--accent);
            border-color: var(--accent);
        }
        .scrolled .nav-cta .btn {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        .scrolled .nav-cta .btn:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
        }

        .mobile-toggle { display: none; color: #fff; font-size: 1.5rem; cursor: pointer; background: none; border: none; }
        .scrolled .mobile-toggle { color: var(--text-primary); }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 90vh;
            display: flex;
            align-items: center;
            justify-content: center;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            padding: 120px 0 80px;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15,11,26,0.78) 0%, rgba(108,62,248,0.35) 50%, rgba(0,212,170,0.18) 100%);
            z-index: 1;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 820px;
            padding: 0 24px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255,255,255,0.12);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255,255,255,0.18);
            color: #fff;
            padding: 6px 20px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 500;
            margin-bottom: 24px;
        }
        .hero-badge i { color: var(--accent); }
        .hero h1 {
            font-size: 3.8rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.1;
            margin-bottom: 20px;
            letter-spacing: -1px;
        }
        .hero h1 span { color: var(--accent); }
        .hero p {
            font-size: 1.2rem;
            color: rgba(255,255,255,0.78);
            max-width: 640px;
            margin: 0 auto 36px;
            line-height: 1.7;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }

        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 40px;
            justify-content: center;
            margin-top: 56px;
        }
        .hero-stat { text-align: center; }
        .hero-stat .num {
            font-size: 2.4rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
            letter-spacing: -0.5px;
        }
        .hero-stat .num span { color: var(--accent); }
        .hero-stat .label {
            font-size: 0.85rem;
            color: rgba(255,255,255,0.6);
            margin-top: 2px;
        }

        /* ===== 板块通用 ===== */
        .section { padding: 80px 0; }
        .section-dark { background: var(--bg-dark); }
        .section-light { background: var(--bg-section); }
        .section-white { background: #fff; }

        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-header h2 { margin-bottom: 12px; }
        .section-header p { font-size: 1.1rem; max-width: 540px; margin: 0 auto; }

        /* ===== 卡片网格 ===== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 24px;
        }
        .card-grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .card-grid-4 {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid var(--border-light);
        }
        .card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
        }
        .card-img {
            width: 100%;
            aspect-ratio: 16 / 10;
            object-fit: cover;
            display: block;
        }
        .card-body { padding: 20px 22px 24px; }
        .card-body h3 { font-size: 1.15rem; margin-bottom: 8px; }
        .card-body p { font-size: 0.92rem; color: var(--text-secondary); margin-bottom: 12px; }
        .card-tag {
            display: inline-block;
            font-size: 0.72rem;
            font-weight: 600;
            color: var(--primary);
            background: rgba(108,62,248,0.07);
            padding: 2px 12px;
            border-radius: 50px;
            margin-bottom: 10px;
        }
        .card-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 0.82rem;
            color: var(--text-light);
            margin-top: 10px;
        }
        .card-meta i { margin-right: 4px; }

        /* ===== 特色分类 ===== */
        .category-cards { margin-top: 16px; }
        .cat-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 28px 28px 32px;
            border: 1px solid var(--border-light);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        .cat-card::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            transform: scaleX(0);
            transform-origin: left;
            transition: var(--transition);
        }
        .cat-card:hover::after { transform: scaleX(1); }
        .cat-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
        .cat-icon {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-sm);
            background: rgba(108,62,248,0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: var(--primary);
            margin-bottom: 16px;
        }
        .cat-card h3 { font-size: 1.15rem; margin-bottom: 6px; }
        .cat-card p { font-size: 0.9rem; color: var(--text-secondary); margin-bottom: 14px; }
        .cat-card .cat-link {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .cat-card .cat-link i { font-size: 0.75rem; transition: var(--transition); }
        .cat-card .cat-link:hover i { transform: translateX(4px); }

        /* ===== 资讯列表 ===== */
        .news-list { display: flex; flex-direction: column; gap: 16px; }
        .news-item {
            display: flex;
            align-items: flex-start;
            gap: 20px;
            background: var(--bg-card);
            padding: 18px 22px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .news-item:hover { box-shadow: var(--shadow-sm); border-color: rgba(108,62,248,0.2); }
        .news-thumb {
            width: 80px;
            height: 80px;
            border-radius: var(--radius-sm);
            object-fit: cover;
            flex-shrink: 0;
        }
        .news-body { flex: 1; }
        .news-body h4 { font-size: 1rem; margin-bottom: 4px; }
        .news-body h4 a { color: var(--text-primary); }
        .news-body h4 a:hover { color: var(--primary); }
        .news-body p { font-size: 0.85rem; color: var(--text-secondary); margin-bottom: 6px; }
        .news-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 0.78rem;
            color: var(--text-light);
        }
        .news-meta .tag {
            background: rgba(108,62,248,0.06);
            color: var(--primary);
            padding: 1px 10px;
            border-radius: 50px;
            font-weight: 500;
        }

        /* ===== 数据板块 ===== */
        .data-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: 16px;
        }
        .data-card {
            text-align: center;
            background: rgba(255,255,255,0.04);
            border: 1px solid rgba(255,255,255,0.06);
            border-radius: var(--radius-md);
            padding: 36px 20px;
            transition: var(--transition);
        }
        .data-card:hover { border-color: rgba(108,62,248,0.2); background: rgba(108,62,248,0.04); }
        .data-card .num { font-size: 2.8rem; font-weight: 800; color: #fff; line-height: 1.2; }
        .data-card .num span { color: var(--accent); }
        .data-card .label { font-size: 0.9rem; color: rgba(255,255,255,0.55); margin-top: 6px; }
        .data-card i { font-size: 1.8rem; color: var(--primary-light); margin-bottom: 12px; }

        /* ===== 流程 ===== */
        .steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: 16px;
        }
        .step {
            text-align: center;
            padding: 32px 16px;
            position: relative;
        }
        .step:not(:last-child)::after {
            content: '→';
            position: absolute;
            right: -16px;
            top: 40px;
            font-size: 1.8rem;
            color: var(--primary-light);
            opacity: 0.3;
        }
        .step-num {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-weight: 800;
            font-size: 1.2rem;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
        }
        .step h4 { font-size: 1.1rem; margin-bottom: 6px; }
        .step p { font-size: 0.88rem; color: var(--text-secondary); }

        /* ===== FAQ ===== */
        .faq-list { max-width: 760px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover { border-color: rgba(108,62,248,0.15); }
        .faq-question {
            padding: 18px 22px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            background: none;
            width: 100%;
            text-align: left;
            color: var(--text-primary);
        }
        .faq-question i { transition: var(--transition); color: var(--text-light); }
        .faq-item.open .faq-question i { transform: rotate(180deg); color: var(--primary); }
        .faq-answer {
            padding: 0 22px 18px;
            font-size: 0.92rem;
            color: var(--text-secondary);
            display: none;
        }
        .faq-item.open .faq-answer { display: block; }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, #8b6cf7 100%);
            padding: 72px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.1;
            mix-blend-mode: overlay;
        }
        .cta-section h2 { color: #fff; font-size: 2.6rem; position: relative; z-index: 1; }
        .cta-section p { color: rgba(255,255,255,0.8); font-size: 1.1rem; max-width: 540px; margin: 12px auto 32px; position: relative; z-index: 1; }
        .cta-section .btn-light { position: relative; z-index: 1; }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #0f0b1a;
            border-top: 1px solid rgba(255,255,255,0.04);
            padding: 56px 0 32px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .site-logo { color: #fff; margin-bottom: 12px; }
        .footer-brand p { font-size: 0.88rem; color: rgba(255,255,255,0.5); max-width: 320px; }
        .footer-col h5 { color: #fff; font-size: 0.95rem; margin-bottom: 16px; }
        .footer-col a {
            display: block;
            color: rgba(255,255,255,0.5);
            font-size: 0.88rem;
            padding: 4px 0;
        }
        .footer-col a:hover { color: var(--accent); }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.04);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.82rem;
            color: rgba(255,255,255,0.35);
        }
        .footer-bottom a { color: rgba(255,255,255,0.35); }
        .footer-bottom a:hover { color: var(--accent); }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            h2 { font-size: 2rem; }
            .hero h1 { font-size: 2.8rem; }
            .card-grid-4 { grid-template-columns: repeat(2, 1fr); }
            .data-grid { grid-template-columns: repeat(2, 1fr); }
            .steps { grid-template-columns: repeat(2, 1fr); }
            .step:nth-child(2)::after { display: none; }
            .footer-grid { grid-template-columns: repeat(2, 1fr); }
        }

        @media (max-width: 768px) {
            .nav-list { display: none; }
            .mobile-toggle { display: block; }
            .nav-list.open {
                display: flex;
                flex-direction: column;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: var(--glass-bg);
                backdrop-filter: blur(20px);
                padding: 20px 24px;
                gap: 16px;
                border-bottom: 1px solid var(--glass-border);
            }
            .nav-list.open a { color: var(--text-primary); border-bottom: none; }
            .nav-list.open a.active { color: var(--primary); }
            .hero { min-height: 70vh; padding: 100px 0 60px; }
            .hero h1 { font-size: 2.2rem; }
            .hero p { font-size: 1rem; }
            .hero-stats { gap: 24px; }
            .hero-stat .num { font-size: 1.8rem; }

            .card-grid-3 { grid-template-columns: 1fr; }
            .card-grid-4 { grid-template-columns: 1fr; }

            .section { padding: 56px 0; }
            .section-header { margin-bottom: 32px; }

            .news-item { flex-direction: column; }
            .news-thumb { width: 100%; height: 180px; }

            .data-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
            .steps { grid-template-columns: 1fr; }
            .step::after { display: none !important; }

            .footer-grid { grid-template-columns: 1fr; gap: 32px; }
            .footer-bottom { flex-direction: column; text-align: center; }

            .cta-section h2 { font-size: 1.8rem; }
            .cta-section p { font-size: 1rem; }
        }

        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            h2 { font-size: 1.6rem; }
            .hero h1 { font-size: 1.8rem; }
            .hero-actions { flex-direction: column; align-items: center; }
            .hero-stat .num { font-size: 1.5rem; }
            .data-card .num { font-size: 2rem; }
            .card-body { padding: 16px 18px 20px; }
        }

        /* 额外实用 */
        .text-center { text-align: center; }
        .mt-1 { margin-top: 8px; }
        .mt-2 { margin-top: 16px; }
        .mt-3 { margin-top: 24px; }
        .mb-2 { margin-bottom: 16px; }
        .gap-2 { gap: 16px; }
        .flex-center { display: flex; align-items: center; justify-content: center; }
        .flex-wrap { flex-wrap: wrap; }
        .w-full { width: 100%; }

        .empty-state {
            text-align: center;
            padding: 40px 20px;
            color: var(--text-light);
            font-size: 0.95rem;
        }
        .empty-state i { font-size: 2rem; margin-bottom: 12px; opacity: 0.3; }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #6c5ce7;
            --primary-dark: #5a4bd1;
            --primary-light: #a29bfe;
            --primary-gradient: linear-gradient(135deg, #6c5ce7 0%, #a29bfe 100%);
            --secondary: #fd79a8;
            --secondary-light: #fab1c8;
            --accent: #fdcb6e;
            --bg-body: #0f0e1a;
            --bg-card: #1a1730;
            --bg-card-hover: #221f3a;
            --bg-section-alt: #12102a;
            --text-primary: #f0edff;
            --text-secondary: #b8b0d4;
            --text-muted: #7a729a;
            --border-color: rgba(108, 92, 231, 0.2);
            --border-hover: rgba(108, 92, 231, 0.4);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.25);
            --shadow-md: 0 8px 28px rgba(0, 0, 0, 0.3);
            --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.4);
            --transition: 0.25s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            --font-heading: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
            --nav-height: 72px;
            --container-max: 1200px;
        }

        /* ===== 基础 Reset ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
        }
        body {
            font-family: var(--font-body);
            background: var(--bg-body);
            color: var(--text-primary);
            line-height: 1.7;
            font-size: 16px;
            overflow-x: hidden;
        }
        a {
            color: var(--primary-light);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover,
        a:focus {
            color: #fff;
        }
        a:focus-visible {
            outline: 2px solid var(--primary-light);
            outline-offset: 2px;
            border-radius: 4px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-md);
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-family: var(--font-heading);
            font-weight: 700;
            line-height: 1.25;
            color: #fff;
        }

        /* ===== 容器 ===== */
        .container {
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (min-width: 768px) {
            .container {
                padding: 0 32px;
            }
        }
        @media (min-width: 1024px) {
            .container {
                padding: 0 40px;
            }
        }

        /* ===== 玻璃导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            height: var(--nav-height);
            background: rgba(15, 14, 26, 0.55);
            backdrop-filter: blur(18px) saturate(180%);
            -webkit-backdrop-filter: blur(18px) saturate(180%);
            border-bottom: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .site-header.scrolled {
            background: rgba(15, 14, 26, 0.88);
            backdrop-filter: blur(24px) saturate(200%);
            -webkit-backdrop-filter: blur(24px) saturate(200%);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--nav-height);
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (min-width: 768px) {
            .header-inner {
                padding: 0 32px;
            }
        }
        @media (min-width: 1024px) {
            .header-inner {
                padding: 0 40px;
            }
        }

        /* Logo */
        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.3px;
            flex-shrink: 0;
        }
        .site-logo i {
            color: var(--primary-light);
            font-size: 26px;
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .site-logo span {
            color: var(--primary-light);
            font-weight: 700;
        }
        .site-logo a {
            color: inherit;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .site-logo a:hover {
            color: #fff;
        }

        /* 导航列表 */
        .nav-list {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-list a {
            position: relative;
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            transition: var(--transition);
            white-space: nowrap;
        }
        .nav-list a:hover {
            color: #fff;
            background: rgba(108, 92, 231, 0.12);
        }
        .nav-list a.active {
            color: #fff;
            background: rgba(108, 92, 231, 0.2);
            font-weight: 600;
        }
        .nav-list a.active::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            border-radius: 3px;
            background: var(--primary-gradient);
        }
        .nav-list .nav-cta .btn {
            padding: 6px 18px;
            font-size: 14px;
        }

        /* 移动端汉堡 */
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }
        .hamburger span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: var(--text-primary);
            border-radius: 4px;
            transition: var(--transition);
        }
        .hamburger:hover {
            background: rgba(108, 92, 231, 0.12);
        }
        .hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(6px, -6px);
        }

        @media (max-width: 820px) {
            .hamburger {
                display: flex;
            }
            .nav-list {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                width: 100%;
                flex-direction: column;
                background: rgba(15, 14, 26, 0.96);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                padding: 20px 24px 28px;
                gap: 4px;
                border-bottom: 1px solid var(--border-color);
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: var(--transition);
                box-shadow: var(--shadow-lg);
            }
            .nav-list.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav-list a {
                width: 100%;
                padding: 14px 18px;
                font-size: 17px;
                border-radius: var(--radius-sm);
            }
            .nav-list a.active::after {
                display: none;
            }
            .nav-list a.active {
                background: rgba(108, 92, 231, 0.25);
                border-left: 3px solid var(--primary-light);
            }
            .nav-list .nav-cta {
                margin-top: 8px;
            }
            .nav-list .nav-cta .btn {
                width: 100%;
                text-align: center;
                padding: 12px 18px;
                font-size: 16px;
            }
        }

        /* ===== Banner ===== */
        .page-banner {
            position: relative;
            padding: 140px 0 80px;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            isolation: isolate;
            overflow: hidden;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 14, 26, 0.85) 0%, rgba(15, 14, 26, 0.6) 60%, rgba(108, 92, 231, 0.25) 100%);
            z-index: 1;
        }
        .page-banner::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 20% 80%, rgba(108, 92, 231, 0.2) 0%, transparent 60%);
            z-index: 1;
        }
        .page-banner .container {
            position: relative;
            z-index: 2;
        }
        .banner-content {
            max-width: 720px;
        }
        .banner-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(108, 92, 231, 0.25);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border: 1px solid rgba(108, 92, 231, 0.3);
            padding: 6px 18px;
            border-radius: 50px;
            font-size: 13px;
            font-weight: 500;
            color: var(--primary-light);
            margin-bottom: 18px;
        }
        .banner-badge i {
            font-size: 14px;
        }
        .banner-content h1 {
            font-size: clamp(32px, 5.5vw, 58px);
            font-weight: 800;
            line-height: 1.12;
            margin-bottom: 18px;
            background: linear-gradient(135deg, #fff 60%, var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .banner-content p {
            font-size: 18px;
            color: var(--text-secondary);
            max-width: 600px;
            line-height: 1.7;
            margin-bottom: 28px;
        }
        .banner-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 28px 40px;
            margin-top: 20px;
        }
        .banner-stats .stat-item {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .banner-stats .stat-number {
            font-size: 28px;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.5px;
        }
        .banner-stats .stat-number small {
            font-size: 16px;
            font-weight: 500;
            color: var(--primary-light);
        }
        .banner-stats .stat-label {
            font-size: 14px;
            color: var(--text-muted);
            font-weight: 400;
        }
        @media (max-width: 640px) {
            .page-banner {
                padding: 120px 0 60px;
            }
            .banner-content h1 {
                font-size: 28px;
            }
            .banner-content p {
                font-size: 16px;
            }
            .banner-stats {
                gap: 16px 24px;
            }
            .banner-stats .stat-number {
                font-size: 22px;
            }
        }

        /* ===== 通用板块 ===== */
        .section {
            padding: 72px 0;
        }
        .section-alt {
            background: var(--bg-section-alt);
        }
        .section-header {
            text-align: center;
            max-width: 640px;
            margin: 0 auto 48px;
        }
        .section-header h2 {
            font-size: clamp(28px, 3.8vw, 40px);
            font-weight: 800;
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }
        .section-header h2 i {
            color: var(--primary-light);
            margin-right: 8px;
        }
        .section-header p {
            font-size: 17px;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        .section-header .subtitle-badge {
            display: inline-block;
            background: rgba(108, 92, 231, 0.15);
            border: 1px solid rgba(108, 92, 231, 0.2);
            padding: 4px 16px;
            border-radius: 50px;
            font-size: 13px;
            font-weight: 500;
            color: var(--primary-light);
            margin-bottom: 12px;
        }
        @media (max-width: 640px) {
            .section {
                padding: 48px 0;
            }
            .section-header {
                margin-bottom: 32px;
            }
        }

        /* ===== 分类导航 Tabs ===== */
        .guide-tabs {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
            margin-bottom: 40px;
        }
        .guide-tabs .tab-btn {
            padding: 10px 24px;
            border-radius: 50px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            background: rgba(108, 92, 231, 0.08);
            border: 1px solid transparent;
            cursor: pointer;
            transition: var(--transition);
        }
        .guide-tabs .tab-btn:hover {
            color: #fff;
            background: rgba(108, 92, 231, 0.18);
            border-color: var(--border-hover);
        }
        .guide-tabs .tab-btn.active {
            color: #fff;
            background: var(--primary-gradient);
            border-color: transparent;
            box-shadow: 0 4px 16px rgba(108, 92, 231, 0.35);
        }
        .guide-tabs .tab-btn i {
            margin-right: 6px;
            font-size: 14px;
        }

        /* ===== 卡片网格 ===== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(1, 1fr);
            gap: 24px;
        }
        @media (min-width: 540px) {
            .card-grid.cols-2 {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (min-width: 768px) {
            .card-grid.cols-3 {
                grid-template-columns: repeat(3, 1fr);
            }
            .card-grid.cols-4 {
                grid-template-columns: repeat(4, 1fr);
            }
        }
        @media (min-width: 1024px) {
            .card-grid.cols-3 {
                grid-template-columns: repeat(3, 1fr);
            }
            .card-grid.cols-4 {
                grid-template-columns: repeat(4, 1fr);
            }
        }

        /* 指南卡片 */
        .guide-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-color);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .guide-card:hover {
            transform: translateY(-6px);
            border-color: var(--border-hover);
            box-shadow: var(--shadow-md);
            background: var(--bg-card-hover);
        }
        .guide-card .card-img {
            position: relative;
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background: #1a1730;
        }
        .guide-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .guide-card:hover .card-img img {
            transform: scale(1.06);
        }
        .guide-card .card-img .card-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 12px;
            font-weight: 600;
            background: var(--primary-gradient);
            color: #fff;
            box-shadow: 0 2px 10px rgba(108, 92, 231, 0.4);
            backdrop-filter: blur(4px);
        }
        .guide-card .card-img .card-duration {
            position: absolute;
            bottom: 12px;
            right: 12px;
            padding: 4px 12px;
            border-radius: 50px;
            font-size: 12px;
            font-weight: 500;
            background: rgba(0, 0, 0, 0.7);
            backdrop-filter: blur(4px);
            color: var(--text-secondary);
        }
        .guide-card .card-body {
            padding: 20px 22px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .guide-card .card-body h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
            line-height: 1.3;
        }
        .guide-card .card-body h3 a {
            color: #fff;
        }
        .guide-card .card-body h3 a:hover {
            color: var(--primary-light);
        }
        .guide-card .card-body p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
            flex: 1;
            margin-bottom: 16px;
        }
        .guide-card .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 13px;
            color: var(--text-muted);
            border-top: 1px solid var(--border-color);
            padding-top: 14px;
            margin-top: auto;
        }
        .guide-card .card-meta .author {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .guide-card .card-meta .author i {
            font-size: 16px;
            color: var(--primary-light);
        }
        .guide-card .card-meta .rating {
            color: var(--accent);
        }
        .guide-card .card-meta .rating i {
            margin-right: 2px;
        }

        @media (max-width: 540px) {
            .guide-card .card-body {
                padding: 16px 18px 20px;
            }
            .guide-card .card-body h3 {
                font-size: 16px;
            }
        }

        /* ===== 特色区块 ===== */
        .feature-block {
            display: grid;
            grid-template-columns: 1fr;
            gap: 40px;
            align-items: center;
        }
        @media (min-width: 768px) {
            .feature-block {
                grid-template-columns: 1fr 1fr;
                gap: 56px;
            }
            .feature-block.reverse {
                direction: rtl;
            }
            .feature-block.reverse>* {
                direction: ltr;
            }
        }
        .feature-block .feature-img {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            background: #1a1730;
            aspect-ratio: 4 / 3;
        }
        .feature-block .feature-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .feature-block .feature-text h3 {
            font-size: clamp(24px, 3vw, 34px);
            font-weight: 800;
            margin-bottom: 16px;
            letter-spacing: -0.2px;
        }
        .feature-block .feature-text p {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 20px;
        }
        .feature-block .feature-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .feature-block .feature-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            font-size: 15px;
            color: var(--text-secondary);
        }
        .feature-block .feature-list li i {
            color: var(--primary-light);
            font-size: 18px;
            margin-top: 2px;
            flex-shrink: 0;
        }

        /* ===== 流程/步骤 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(1, 1fr);
            gap: 24px;
        }
        @media (min-width: 540px) {
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (min-width: 900px) {
            .steps-grid {
                grid-template-columns: repeat(4, 1fr);
            }
        }
        .step-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 32px 24px 28px;
            border: 1px solid var(--border-color);
            text-align: center;
            transition: var(--transition);
            position: relative;
        }
        .step-card:hover {
            border-color: var(--border-hover);
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .step-card .step-number {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: var(--primary-gradient);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            font-weight: 800;
            color: #fff;
            margin: 0 auto 18px;
            box-shadow: 0 4px 16px rgba(108, 92, 231, 0.3);
        }
        .step-card h4 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .step-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--border-hover);
        }
        .faq-question {
            width: 100%;
            background: none;
            border: none;
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            text-align: left;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            transition: var(--transition);
        }
        .faq-question:hover {
            color: var(--primary-light);
        }
        .faq-question i {
            font-size: 18px;
            color: var(--primary-light);
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }
        .faq-answer {
            padding: 0 24px 20px;
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
            display: none;
        }
        .faq-item.open .faq-answer {
            display: block;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--primary-gradient);
            border-radius: var(--radius-xl);
            padding: 56px 40px;
            text-align: center;
            position: relative;
            overflow: hidden;
            isolation: isolate;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(255, 255, 255, 0.1) 0%, transparent 60%);
            z-index: 1;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
        }
        .cta-section h2 {
            font-size: clamp(26px, 3.5vw, 38px);
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
        }
        .cta-section p {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.8);
            max-width: 540px;
            margin: 0 auto 28px;
            line-height: 1.7;
        }
        .cta-section .btn-group {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            justify-content: center;
        }
        .cta-section .btn {
            padding: 14px 36px;
            border-radius: 50px;
            font-size: 16px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .cta-section .btn-primary {
            background: #fff;
            color: var(--primary-dark);
        }
        .cta-section .btn-primary:hover {
            background: var(--accent);
            color: #1a1a2e;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
        }
        .cta-section .btn-outline {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.4);
        }
        .cta-section .btn-outline:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.1);
            transform: translateY(-2px);
        }

        /* ===== 通用按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 24px;
            border-radius: 50px;
            font-size: 15px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            background: var(--primary-gradient);
            color: #fff;
            text-decoration: none;
        }
        .btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(108, 92, 231, 0.35);
            color: #fff;
        }
        .btn-sm {
            padding: 6px 16px;
            font-size: 13px;
        }
        .btn-outline-light {
            background: transparent;
            border: 2px solid rgba(255, 255, 255, 0.3);
            color: #fff;
        }
        .btn-outline-light:hover {
            border-color: var(--primary-light);
            background: rgba(108, 92, 231, 0.15);
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #0c0b18;
            border-top: 1px solid var(--border-color);
            padding: 56px 0 28px;
            margin-top: 72px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 36px;
            margin-bottom: 36px;
        }
        @media (min-width: 600px) {
            .footer-grid {
                grid-template-columns: 1.4fr 1fr 1fr 1fr;
            }
        }
        .footer-brand .site-logo {
            font-size: 20px;
            margin-bottom: 14px;
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 300px;
        }
        .footer-col h5 {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }
        .footer-col a {
            display: block;
            font-size: 14px;
            color: var(--text-muted);
            padding: 4px 0;
            transition: var(--transition);
        }
        .footer-col a:hover {
            color: var(--primary-light);
            padding-left: 4px;
        }
        .footer-col a i {
            margin-right: 8px;
            width: 18px;
            text-align: center;
            color: var(--primary-light);
        }
        .footer-bottom {
            border-top: 1px solid var(--border-color);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 12px;
            font-size: 13px;
            color: var(--text-muted);
        }
        .footer-bottom a {
            color: var(--text-muted);
        }
        .footer-bottom a:hover {
            color: var(--primary-light);
        }
        @media (max-width: 600px) {
            .footer-grid {
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== 空状态 / 辅助 ===== */
        .text-center {
            text-align: center;
        }
        .mt-1 {
            margin-top: 12px;
        }
        .mt-2 {
            margin-top: 24px;
        }
        .mt-3 {
            margin-top: 40px;
        }
        .mb-2 {
            margin-bottom: 24px;
        }
        .gap-2 {
            gap: 20px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .visually-hidden {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            border: 0;
        }

        /* ===== Foundation 覆盖 ===== */
        .grid-container {
            max-width: var(--container-max) !important;
            padding-left: 24px !important;
            padding-right: 24px !important;
        }
        @media (min-width: 768px) {
            .grid-container {
                padding-left: 32px !important;
                padding-right: 32px !important;
            }
        }
        @media (min-width: 1024px) {
            .grid-container {
                padding-left: 40px !important;
                padding-right: 40px !important;
            }
        }

        /* ===== 响应式微调 ===== */
        @media (max-width: 400px) {
            .header-inner {
                padding: 0 16px;
            }
            .site-logo {
                font-size: 18px;
            }
            .site-logo i {
                font-size: 22px;
            }
            .banner-stats .stat-number {
                font-size: 20px;
            }
            .cta-section {
                padding: 36px 20px;
            }
            .cta-section .btn {
                padding: 12px 24px;
                font-size: 14px;
            }
        }

/* roulang page: article */
:root {
            --primary: #6C5CE7;
            --primary-dark: #5A4BD1;
            --primary-light: #A29BFE;
            --secondary: #00CEC9;
            --secondary-dark: #00B5B0;
            --accent: #FD79A8;
            --dark-bg: #0F0A1E;
            --dark-bg2: #1A1230;
            --dark-card: #221A3E;
            --dark-border: #2F254A;
            --text-white: #F5F3FF;
            --text-light: #C8C0E0;
            --text-muted: #8A7FA8;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 22px;
            --shadow-sm: 0 2px 12px rgba(108,92,231,0.15);
            --shadow-md: 0 8px 32px rgba(108,92,231,0.20);
            --shadow-lg: 0 16px 56px rgba(108,92,231,0.25);
            --glass-bg: rgba(15,10,30,0.65);
            --glass-border: rgba(255,255,255,0.08);
            --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
        }
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body {
            font-family: var(--font-main);
            background: var(--dark-bg);
            color: var(--text-white);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        a { color: var(--primary-light); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--secondary); }
        img { max-width: 100%; height: auto; display: block; }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
        .container-narrow { max-width: 860px; margin: 0 auto; padding: 0 24px; }

        /* ===== Glass Header ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: var(--glass-bg);
            backdrop-filter: blur(18px) saturate(1.2);
            -webkit-backdrop-filter: blur(18px) saturate(1.2);
            border-bottom: 1px solid var(--glass-border);
            transition: var(--transition);
            padding: 0;
            height: 68px;
        }
        .site-header.scrolled {
            background: rgba(15,10,30,0.88);
            box-shadow: 0 4px 30px rgba(0,0,0,0.4);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .site-logo {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--text-white);
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .site-logo i { color: var(--secondary); font-size: 1.5rem; }
        .site-logo span { color: var(--secondary); font-weight: 300; }
        .nav-list {
            display: flex;
            align-items: center;
            gap: 6px;
            list: none;
        }
        .nav-list a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            color: var(--text-light);
            font-size: 0.92rem;
            font-weight: 500;
            transition: var(--transition);
            position: relative;
        }
        .nav-list a:hover { color: var(--text-white); background: rgba(255,255,255,0.06); }
        .nav-list a.active { color: var(--text-white); background: rgba(108,92,231,0.2); }
        .nav-list a.active::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--secondary);
            border-radius: 2px;
        }
        .nav-list .nav-cta { padding: 0; background: none; }
        .nav-list .nav-cta:hover { background: none; }
        .nav-list .btn-sm {
            padding: 8px 22px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #fff;
            border-radius: 30px;
            font-size: 0.85rem;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: 0 4px 16px rgba(108,92,231,0.3);
            display: inline-block;
        }
        .nav-list .btn-sm:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(108,92,231,0.4);
        }
        .nav-list .nav-cta.active .btn-sm {
            box-shadow: 0 0 0 2px var(--secondary), 0 4px 20px rgba(0,206,201,0.3);
        }
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-white);
            font-size: 1.6rem;
            cursor: pointer;
            padding: 4px;
        }

        /* ===== Article Banner ===== */
        .article-banner {
            position: relative;
            min-height: 380px;
            display: flex;
            align-items: flex-end;
            padding: 120px 0 60px;
            margin-top: 68px;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            overflow: hidden;
        }
        .article-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(15,10,30,0.3) 0%, rgba(15,10,30,0.85) 70%, var(--dark-bg) 100%);
            z-index: 1;
        }
        .article-banner .container-narrow { position: relative; z-index: 2; width: 100%; }
        .article-banner .post-category {
            display: inline-block;
            padding: 4px 16px;
            background: rgba(108,92,231,0.35);
            backdrop-filter: blur(6px);
            border: 1px solid rgba(108,92,231,0.3);
            border-radius: 30px;
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--secondary);
            letter-spacing: 0.5px;
            text-transform: uppercase;
            margin-bottom: 16px;
        }
        .article-banner h1 {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.2;
            color: var(--text-white);
            max-width: 800px;
            margin-bottom: 20px;
            text-shadow: 0 2px 20px rgba(0,0,0,0.3);
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 20px 32px;
            align-items: center;
            color: var(--text-muted);
            font-size: 0.9rem;
            padding-bottom: 8px;
        }
        .article-meta i { margin-right: 6px; color: var(--primary-light); }
        .article-meta .meta-item { display: flex; align-items: center; }

        /* ===== Article Content ===== */
        .article-body-wrap {
            padding: 48px 0 40px;
            background: var(--dark-bg);
        }
        .article-content {
            font-size: 1.08rem;
            line-height: 1.9;
            color: var(--text-light);
        }
        .article-content p { margin-bottom: 1.6em; }
        .article-content h2, .article-content h3, .article-content h4 {
            color: var(--text-white);
            margin-top: 1.8em;
            margin-bottom: 0.7em;
            font-weight: 700;
        }
        .article-content h2 { font-size: 1.8rem; }
        .article-content h3 { font-size: 1.4rem; }
        .article-content h4 { font-size: 1.15rem; }
        .article-content ul, .article-content ol { margin-bottom: 1.6em; padding-left: 1.6em; }
        .article-content li { margin-bottom: 0.4em; }
        .article-content blockquote {
            border-left: 4px solid var(--primary);
            padding: 16px 24px;
            margin: 1.8em 0;
            background: rgba(108,92,231,0.08);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-light);
        }
        .article-content a { color: var(--secondary); text-decoration: underline; }
        .article-content a:hover { color: var(--primary-light); }
        .article-content img { border-radius: var(--radius-md); margin: 1.6em 0; }
        .article-content code {
            background: rgba(255,255,255,0.06);
            padding: 2px 10px;
            border-radius: 4px;
            font-size: 0.9em;
            color: var(--accent);
        }
        .article-content pre {
            background: rgba(0,0,0,0.3);
            padding: 20px 24px;
            border-radius: var(--radius-md);
            overflow-x: auto;
            margin: 1.6em 0;
            border: 1px solid var(--dark-border);
        }
        .not-found-wrap {
            text-align: center;
            padding: 80px 24px;
            color: var(--text-muted);
        }
        .not-found-wrap i { font-size: 4rem; color: var(--primary); margin-bottom: 20px; }
        .not-found-wrap h2 { font-size: 2rem; color: var(--text-white); margin-bottom: 12px; }
        .not-found-wrap p { margin-bottom: 24px; font-size: 1.1rem; }
        .not-found-wrap .btn-back { display: inline-block; padding: 12px 36px; background: var(--primary); color: #fff; border-radius: 30px; font-weight: 600; transition: var(--transition); }
        .not-found-wrap .btn-back:hover { background: var(--primary-dark); transform: translateY(-2px); }

        /* ===== Article Footer ===== */
        .article-footer-wrap {
            padding: 32px 0 48px;
            border-top: 1px solid var(--dark-border);
            margin-top: 32px;
        }
        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 28px;
        }
        .article-tags .tag {
            padding: 6px 18px;
            background: rgba(108,92,231,0.1);
            border: 1px solid rgba(108,92,231,0.2);
            border-radius: 30px;
            font-size: 0.82rem;
            color: var(--text-light);
            transition: var(--transition);
        }
        .article-tags .tag:hover { background: rgba(108,92,231,0.2); color: var(--text-white); }
        .article-share {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
        }
        .article-share span { color: var(--text-muted); font-size: 0.9rem; }
        .article-share a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255,255,255,0.05);
            color: var(--text-light);
            border: 1px solid var(--dark-border);
            transition: var(--transition);
        }
        .article-share a:hover { background: var(--primary); color: #fff; border-color: var(--primary); transform: translateY(-2px); }

        /* ===== Article Nav ===== */
        .article-nav {
            padding: 24px 0 16px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 16px;
            border-top: 1px solid var(--dark-border);
        }
        .article-nav a {
            display: flex;
            align-items: center;
            gap: 8px;
            color: var(--text-muted);
            font-size: 0.95rem;
            transition: var(--transition);
        }
        .article-nav a:hover { color: var(--secondary); }
        .article-nav a i { font-size: 1rem; }

        /* ===== Related Posts ===== */
        .related-section {
            padding: 60px 0;
            background: var(--dark-bg2);
        }
        .related-section .section-title {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 8px;
        }
        .related-section .section-sub {
            color: var(--text-muted);
            margin-bottom: 36px;
            font-size: 1rem;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .related-card {
            background: var(--dark-card);
            border: 1px solid var(--dark-border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
        }
        .related-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: var(--primary);
        }
        .related-card .card-img {
            height: 180px;
            background-size: cover;
            background-position: center;
            position: relative;
        }
        .related-card .card-img .card-cat {
            position: absolute;
            top: 12px;
            left: 12px;
            padding: 4px 14px;
            background: rgba(15,10,30,0.7);
            backdrop-filter: blur(4px);
            border-radius: 20px;
            font-size: 0.75rem;
            color: var(--secondary);
            font-weight: 600;
        }
        .related-card .card-body {
            padding: 18px 20px 20px;
        }
        .related-card .card-body h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 8px;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card .card-body h3 a { color: inherit; }
        .related-card .card-body h3 a:hover { color: var(--secondary); }
        .related-card .card-body .card-meta {
            font-size: 0.82rem;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .related-card .card-body .card-meta i { margin-right: 4px; }

        /* ===== CTA Section ===== */
        .cta-section {
            padding: 70px 0;
            background: linear-gradient(135deg, rgba(108,92,231,0.12) 0%, rgba(0,206,201,0.08) 100%);
            border-top: 1px solid var(--dark-border);
            border-bottom: 1px solid var(--dark-border);
            text-align: center;
        }
        .cta-section h2 {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 12px;
        }
        .cta-section p {
            color: var(--text-light);
            max-width: 560px;
            margin: 0 auto 32px;
            font-size: 1.05rem;
        }
        .cta-section .cta-buttons {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 16px;
        }
        .cta-section .btn-cta-primary {
            padding: 14px 40px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #fff;
            border-radius: 30px;
            font-weight: 700;
            font-size: 1rem;
            transition: var(--transition);
            box-shadow: 0 6px 24px rgba(108,92,231,0.3);
            display: inline-block;
            border: none;
            cursor: pointer;
        }
        .cta-section .btn-cta-primary:hover { transform: translateY(-3px); box-shadow: 0 10px 36px rgba(108,92,231,0.4); }
        .cta-section .btn-cta-secondary {
            padding: 14px 40px;
            background: transparent;
            color: var(--text-white);
            border-radius: 30px;
            font-weight: 700;
            font-size: 1rem;
            border: 2px solid var(--dark-border);
            transition: var(--transition);
            display: inline-block;
            cursor: pointer;
        }
        .cta-section .btn-cta-secondary:hover { border-color: var(--primary); color: var(--primary-light); }

        /* ===== FAQ Section ===== */
        .faq-section {
            padding: 60px 0 70px;
            background: var(--dark-bg);
        }
        .faq-section .section-title {
            text-align: center;
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 40px;
        }
        .faq-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px 32px;
        }
        .faq-item {
            background: var(--dark-card);
            border: 1px solid var(--dark-border);
            border-radius: var(--radius-md);
            padding: 20px 24px;
            transition: var(--transition);
        }
        .faq-item:hover { border-color: rgba(108,92,231,0.3); }
        .faq-item h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .faq-item h4 i { color: var(--secondary); font-size: 0.9rem; }
        .faq-item p {
            color: var(--text-muted);
            font-size: 0.92rem;
            line-height: 1.6;
            margin: 0;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--dark-bg2);
            border-top: 1px solid var(--dark-border);
            padding: 50px 0 30px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 36px;
            margin-bottom: 36px;
        }
        .footer-brand .site-logo { margin-bottom: 14px; font-size: 1.5rem; }
        .footer-brand p { color: var(--text-muted); font-size: 0.9rem; line-height: 1.7; max-width: 340px; }
        .footer-col h5 {
            color: var(--text-white);
            font-size: 0.95rem;
            font-weight: 700;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }
        .footer-col a {
            display: block;
            color: var(--text-muted);
            font-size: 0.88rem;
            padding: 4px 0;
            transition: var(--transition);
        }
        .footer-col a:hover { color: var(--secondary); padding-left: 4px; }
        .footer-col a i { width: 20px; color: var(--primary-light); }
        .footer-bottom {
            border-top: 1px solid var(--dark-border);
            padding-top: 24px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            color: var(--text-muted);
            font-size: 0.84rem;
        }
        .footer-bottom a { color: var(--text-muted); margin: 0 4px; }
        .footer-bottom a:hover { color: var(--secondary); }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .related-grid { grid-template-columns: 1fr 1fr; }
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 28px; }
            .article-banner h1 { font-size: 2.2rem; }
        }
        @media (max-width: 768px) {
            .mobile-toggle { display: block; }
            .nav-list {
                position: fixed;
                top: 68px;
                left: 0;
                right: 0;
                background: rgba(15,10,30,0.96);
                backdrop-filter: blur(14px);
                flex-direction: column;
                padding: 16px 24px 24px;
                gap: 6px;
                transform: translateY(-110%);
                opacity: 0;
                transition: var(--transition);
                border-bottom: 1px solid var(--dark-border);
                pointer-events: none;
                box-shadow: 0 20px 60px rgba(0,0,0,0.5);
            }
            .nav-list.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
            .nav-list a { width: 100%; padding: 12px 18px; font-size: 1rem; }
            .nav-list .nav-cta { width: 100%; }
            .nav-list .nav-cta .btn-sm { width: 100%; text-align: center; }
            .article-banner { min-height: 300px; padding: 100px 0 40px; }
            .article-banner h1 { font-size: 1.8rem; }
            .article-content { font-size: 1rem; }
            .related-grid { grid-template-columns: 1fr; }
            .faq-grid { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
            .cta-section h2 { font-size: 1.7rem; }
            .article-meta { gap: 12px 20px; font-size: 0.84rem; }
        }
        @media (max-width: 520px) {
            .header-inner { padding: 0 16px; }
            .container { padding: 0 16px; }
            .container-narrow { padding: 0 16px; }
            .site-logo { font-size: 1.3rem; }
            .article-banner h1 { font-size: 1.5rem; }
            .article-content { font-size: 0.95rem; }
            .related-card .card-img { height: 140px; }
            .cta-section { padding: 50px 0; }
            .cta-section h2 { font-size: 1.4rem; }
            .cta-section .btn-cta-primary,
            .cta-section .btn-cta-secondary { width: 100%; text-align: center; }
        }

        /* Foundation overrides */
        .grid-container { max-width: 1200px; }
        .grid-x { margin: 0; }
        .cell { padding: 0; }