/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #e83e8c;
            --primary-dark: #c2255c;
            --primary-light: #f8b4d9;
            --secondary: #6f42c1;
            --secondary-light: #d0bfff;
            --accent: #ff6b35;
            --surface: #ffffff;
            --bg-light: #f8f9fa;
            --bg-dark: #1a1a2e;
            --bg-section-alt: #f3f0ff;
            --text-primary: #1a1a2e;
            --text-secondary: #4a4a6a;
            --text-muted: #8a8aaa;
            --text-inverse: #ffffff;
            --border: #e0e0f0;
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow-md: 0 8px 30px rgba(0,0,0,0.10);
            --shadow-lg: 0 20px 60px rgba(0,0,0,0.15);
            --shadow-glow: 0 0 40px rgba(232,62,140,0.20);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --max-width: 1200px;
            --nav-height: 72px;
        }

        /* ===== Reset ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--surface);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a { color: inherit; text-decoration: none; transition: var(--transition); }
        a:hover, a:focus { color: var(--primary); }
        img { max-width: 100%; height: auto; display: block; }
        button, input, textarea { font-family: inherit; font-size: inherit; }
        button { cursor: pointer; border: none; background: none; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--text-primary); }
        h1 { font-size: clamp(2.2rem, 5vw, 3.8rem); }
        h2 { font-size: clamp(1.6rem, 3.5vw, 2.6rem); }
        h3 { font-size: clamp(1.2rem, 2.5vw, 1.6rem); }
        p { margin-bottom: 1em; }

        /* ===== 容器 ===== */
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container { padding: 0 16px; }
        }

        /* ===== 导航 (悬浮胶囊) ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            padding: 12px 24px;
            background: rgba(255,255,255,0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(224,224,240,0.3);
            transition: var(--transition);
        }
        .site-header.scrolled {
            background: rgba(255,255,255,0.96);
            box-shadow: var(--shadow-sm);
        }
        .nav-inner {
            max-width: var(--max-width);
            margin: 0 auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--nav-height);
        }
        .logo {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .logo i { font-size: 1.3rem; color: var(--secondary); }
        .logo span { background: linear-gradient(135deg, var(--primary), var(--secondary)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            background: rgba(232,62,140,0.06);
            padding: 4px;
            border-radius: 40px;
            backdrop-filter: blur(4px);
        }
        .nav-links a {
            padding: 10px 24px;
            border-radius: 32px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: var(--transition);
            white-space: nowrap;
        }
        .nav-links a:hover { color: var(--primary); background: rgba(232,62,140,0.08); }
        .nav-links a.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 16px rgba(232,62,140,0.30);
        }
        .nav-toggle {
            display: none;
            font-size: 1.5rem;
            color: var(--text-primary);
            padding: 8px;
            border-radius: 8px;
            background: rgba(232,62,140,0.08);
        }
        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                top: calc(var(--nav-height) + 12px);
                left: 16px;
                right: 16px;
                background: rgba(255,255,255,0.98);
                backdrop-filter: blur(20px);
                border-radius: var(--radius-md);
                box-shadow: var(--shadow-lg);
                flex-direction: column;
                padding: 12px;
                gap: 4px;
                border: 1px solid var(--border);
            }
            .nav-links.open { display: flex; }
            .nav-links a { padding: 14px 20px; width: 100%; border-radius: var(--radius-sm); }
            .nav-toggle { display: block; }
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 90vh;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            padding: 140px 24px 100px;
            background: linear-gradient(135deg, rgba(26,26,46,0.85), rgba(106,66,193,0.70)), url(/assets/images/backpic/back-1.png) center center / cover no-repeat;
            color: var(--text-inverse);
            overflow: hidden;
        }
        .hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 120px;
            background: linear-gradient(to top, var(--surface), transparent);
        }
        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 900px;
        }
        .hero h1 {
            color: var(--text-inverse);
            margin-bottom: 20px;
            font-weight: 800;
            text-shadow: 0 4px 30px rgba(0,0,0,0.3);
        }
        .hero h1 .highlight {
            background: linear-gradient(135deg, var(--primary-light), #ffd6e8);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-sub {
            font-size: clamp(1.1rem, 2vw, 1.4rem);
            color: rgba(255,255,255,0.85);
            max-width: 720px;
            margin: 0 auto 36px;
            line-height: 1.8;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 16px 40px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 1.05rem;
            transition: var(--transition);
            border: 2px solid transparent;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 8px 30px rgba(232,62,140,0.35);
        }
        .btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 12px 40px rgba(232,62,140,0.45); color: #fff; }
        .btn-outline {
            background: transparent;
            color: #fff;
            border-color: rgba(255,255,255,0.5);
        }
        .btn-outline:hover { background: rgba(255,255,255,0.12); border-color: #fff; transform: translateY(-2px); color: #fff; }
        .btn-sm {
            padding: 10px 24px;
            font-size: 0.9rem;
        }
        .hero-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: center;
            margin-top: 40px;
        }
        .hero-tags span {
            background: rgba(255,255,255,0.12);
            backdrop-filter: blur(4px);
            padding: 6px 18px;
            border-radius: 30px;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.9);
            border: 1px solid rgba(255,255,255,0.15);
        }
        @media (max-width: 768px) {
            .hero { min-height: 70vh; padding: 120px 16px 80px; }
            .hero-actions { flex-direction: column; align-items: center; }
            .btn { width: 100%; justify-content: center; }
        }

        /* ===== 板块通用 ===== */
        .section {
            padding: 100px 0;
        }
        .section-alt {
            background: var(--bg-section-alt);
        }
        .section-light {
            background: var(--bg-light);
        }
        .section-title {
            text-align: center;
            margin-bottom: 16px;
            font-weight: 800;
        }
        .section-sub {
            text-align: center;
            color: var(--text-secondary);
            max-width: 640px;
            margin: 0 auto 60px;
            font-size: 1.1rem;
        }
        .section-sub i { color: var(--primary); margin-right: 6px; }
        @media (max-width: 768px) {
            .section { padding: 60px 0; }
            .section-sub { margin-bottom: 40px; }
        }

        /* ===== 卡片 ===== */
        .card {
            background: var(--surface);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            transition: var(--transition);
            overflow: hidden;
        }
        .card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }
        .card-img {
            width: 100%;
            aspect-ratio: 16/10;
            object-fit: cover;
        }
        .card-body {
            padding: 24px;
        }
        .card-body h3 {
            margin-bottom: 8px;
            font-size: 1.2rem;
        }
        .card-body p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            margin-bottom: 0;
        }
        .card-tag {
            display: inline-block;
            padding: 2px 14px;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 600;
            background: var(--primary-light);
            color: var(--primary-dark);
            margin-bottom: 10px;
        }
        .card-tag.hot { background: #ffe0d0; color: #d6451a; }
        .card-tag.new { background: #d0f0ff; color: #0a7a9a; }

        /* ===== 网格 ===== */
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }
        .grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 30px;
        }
        .grid-4 {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        @media (max-width: 1024px) {
            .grid-4 { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 768px) {
            .grid-3, .grid-2, .grid-4 { grid-template-columns: 1fr; gap: 20px; }
        }

        /* ===== 特色优势 ===== */
        .feature-card {
            text-align: center;
            padding: 40px 28px;
            border-radius: var(--radius-md);
            background: var(--surface);
            border: 1px solid var(--border);
            transition: var(--transition);
        }
        .feature-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-6px);
            border-color: var(--primary-light);
        }
        .feature-icon {
            width: 72px;
            height: 72px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary-light), var(--secondary-light));
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            font-size: 1.8rem;
            color: var(--primary-dark);
        }
        .feature-card h3 { margin-bottom: 12px; }
        .feature-card p { color: var(--text-secondary); font-size: 0.95rem; margin-bottom: 0; }

        /* ===== 统计数字 ===== */
        .stat-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
        }
        .stat-item {
            padding: 32px 16px;
            border-radius: var(--radius-md);
            background: var(--surface);
            box-shadow: var(--shadow-sm);
        }
        .stat-number {
            font-size: 2.8rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.2;
        }
        .stat-label {
            color: var(--text-secondary);
            font-size: 0.95rem;
            margin-top: 8px;
        }
        @media (max-width: 768px) {
            .stat-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 480px) {
            .stat-grid { grid-template-columns: 1fr; }
        }

        /* ===== 流程 ===== */
        .process-steps {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 40px;
            position: relative;
        }
        .process-step {
            text-align: center;
            position: relative;
        }
        .step-num {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            font-weight: 700;
            margin: 0 auto 20px;
            box-shadow: 0 8px 24px rgba(232,62,140,0.25);
        }
        .process-step h3 { margin-bottom: 10px; }
        .process-step p { color: var(--text-secondary); font-size: 0.95rem; margin-bottom: 0; }
        @media (max-width: 768px) {
            .process-steps { grid-template-columns: 1fr; gap: 30px; }
        }

        /* ===== 最新资讯列表 (CMS) ===== */
        .post-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .post-item {
            display: flex;
            align-items: flex-start;
            gap: 20px;
            padding: 20px 24px;
            background: var(--surface);
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            transition: var(--transition);
        }
        .post-item:hover {
            box-shadow: var(--shadow-sm);
            border-color: var(--primary-light);
        }
        .post-num {
            flex-shrink: 0;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--bg-section-alt);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            color: var(--secondary);
            font-size: 1.1rem;
        }
        .post-item:nth-child(1) .post-num { background: linear-gradient(135deg, var(--primary), var(--secondary)); color: #fff; }
        .post-item:nth-child(2) .post-num { background: linear-gradient(135deg, var(--primary-light), var(--secondary-light)); color: var(--primary-dark); }
        .post-item:nth-child(3) .post-num { background: linear-gradient(135deg, #ffd6e8, #d0bfff); color: var(--primary-dark); }
        .post-info { flex: 1; }
        .post-info h3 { font-size: 1.1rem; margin-bottom: 4px; transition: var(--transition); }
        .post-item:hover .post-info h3 { color: var(--primary); }
        .post-info p { color: var(--text-secondary); font-size: 0.9rem; margin-bottom: 6px; }
        .post-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            font-size: 0.8rem;
            color: var(--text-muted);
        }
        .post-meta i { margin-right: 4px; }
        .post-meta .cat { color: var(--primary); font-weight: 500; }
        .post-empty {
            text-align: center;
            padding: 60px 20px;
            color: var(--text-muted);
            font-size: 1.1rem;
            background: var(--bg-light);
            border-radius: var(--radius-md);
        }
        .post-empty i { font-size: 2rem; margin-bottom: 16px; display: block; color: var(--primary-light); }
        @media (max-width: 768px) {
            .post-item { flex-direction: column; padding: 16px; }
            .post-num { width: 36px; height: 36px; font-size: 0.9rem; }
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover { border-color: var(--primary-light); }
        .faq-question {
            padding: 20px 24px;
            font-weight: 600;
            font-size: 1.05rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            background: var(--surface);
            transition: var(--transition);
            user-select: none;
        }
        .faq-question:hover { background: var(--bg-light); }
        .faq-question i { color: var(--primary); transition: var(--transition); font-size: 0.9rem; }
        .faq-item.active .faq-question i { transform: rotate(180deg); }
        .faq-answer {
            padding: 0 24px;
            max-height: 0;
            overflow: hidden;
            transition: var(--transition);
            color: var(--text-secondary);
            line-height: 1.8;
        }
        .faq-item.active .faq-answer {
            padding: 0 24px 20px;
            max-height: 300px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--bg-dark), #16213e);
            color: var(--text-inverse);
            text-align: center;
            padding: 100px 24px;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle at 30% 50%, rgba(232,62,140,0.12), transparent 60%);
            pointer-events: none;
        }
        .cta-section h2 {
            color: var(--text-inverse);
            margin-bottom: 16px;
            position: relative;
        }
        .cta-section p {
            color: rgba(255,255,255,0.8);
            max-width: 600px;
            margin: 0 auto 36px;
            font-size: 1.1rem;
            position: relative;
        }
        .cta-section .btn-primary {
            background: #fff;
            color: var(--primary-dark);
            box-shadow: 0 8px 30px rgba(0,0,0,0.2);
            position: relative;
        }
        .cta-section .btn-primary:hover { background: var(--primary-light); transform: translateY(-2px); color: var(--primary-dark); }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255,255,255,0.7);
            padding: 60px 24px 30px;
        }
        .footer-inner {
            max-width: var(--max-width);
            margin: 0 auto;
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
        }
        .footer-brand .logo { margin-bottom: 16px; }
        .footer-brand p { font-size: 0.9rem; line-height: 1.8; max-width: 360px; }
        .footer-col h4 {
            color: #fff;
            font-size: 1.1rem;
            margin-bottom: 20px;
        }
        .footer-col a {
            display: block;
            color: rgba(255,255,255,0.6);
            padding: 6px 0;
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .footer-col a:hover { color: var(--primary-light); padding-left: 4px; }
        .footer-bottom {
            max-width: var(--max-width);
            margin: 40px auto 0;
            padding-top: 24px;
            border-top: 1px solid rgba(255,255,255,0.08);
            text-align: center;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.4);
        }
        @media (max-width: 768px) {
            .footer-inner { grid-template-columns: 1fr; gap: 32px; }
            .footer-brand p { max-width: 100%; }
        }

        /* ===== 响应式补充 ===== */
        @media (max-width: 480px) {
            .hero h1 { font-size: 1.8rem; }
            .section-title { font-size: 1.5rem; }
            .stat-number { font-size: 2rem; }
            .btn { padding: 14px 28px; font-size: 0.95rem; }
        }
        @media (min-width: 769px) and (max-width: 1024px) {
            .grid-3 { grid-template-columns: repeat(2, 1fr); }
        }

        /* ===== 辅助 ===== */
        .text-center { text-align: center; }
        .mt-20 { margin-top: 20px; }
        .mb-20 { margin-bottom: 20px; }
        .gap-16 { gap: 16px; }
        .flex-center { display: flex; align-items: center; justify-content: center; }
        .badge {
            display: inline-block;
            padding: 2px 14px;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 600;
            background: var(--primary-light);
            color: var(--primary-dark);
        }
        .badge-hot { background: #ffe0d0; color: #d6451a; }
        .badge-new { background: #d0f0ff; color: #0a7a9a; }

        /* ===== backtop ===== */
        .back-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            box-shadow: var(--shadow-md);
            opacity: 0;
            visibility: hidden;
            transition: var(--transition);
            z-index: 999;
        }
        .back-top.visible { opacity: 1; visibility: visible; }
        .back-top:hover { background: var(--primary-dark); transform: translateY(-3px); color: #fff; }

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --primary: #e63946;
            --primary-dark: #c1121f;
            --primary-light: #ff6b77;
            --secondary: #1d3557;
            --secondary-light: #2a4a7a;
            --accent: #f4a261;
            --accent-light: #f9c48b;
            --bg-dark: #0f1a2e;
            --bg-mid: #1a2d4a;
            --bg-light: #f8f9fa;
            --bg-card: #ffffff;
            --text-primary: #1a1a2e;
            --text-secondary: #4a4a6a;
            --text-light: #8a8aaa;
            --text-white: #ffffff;
            --border: #e0e0e8;
            --border-light: #f0f0f5;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow-md: 0 8px 30px rgba(0,0,0,0.10);
            --shadow-lg: 0 20px 60px rgba(0,0,0,0.15);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --max-width: 1200px;
            --nav-height: 72px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-light);
            -webkit-font-smoothing: antialiased;
        }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
        a { color: inherit; text-decoration: none; transition: var(--transition); }
        button { cursor: pointer; font-family: inherit; border: none; background: none; }
        input, textarea { font-family: inherit; font-size: 1rem; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--text-primary); }

        /* ===== Container ===== */
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container { padding: 0 16px; }
        }

        /* ===== Header / Navigations ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-height);
            background: rgba(255,255,255,0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(0,0,0,0.05);
            box-shadow: 0 2px 20px rgba(0,0,0,0.04);
            transition: var(--transition);
        }
        .site-header.scrolled {
            background: rgba(255,255,255,0.98);
            box-shadow: 0 4px 30px rgba(0,0,0,0.08);
        }
        .nav-inner {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--secondary);
            letter-spacing: -0.3px;
        }
        .logo i {
            color: var(--primary);
            font-size: 1.6rem;
            transition: var(--transition);
        }
        .logo:hover i { transform: rotate(20deg); color: var(--primary-dark); }
        .logo span { background: linear-gradient(135deg, var(--secondary), var(--primary)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .nav-links { display: flex; align-items: center; gap: 6px; }
        .nav-links a {
            padding: 8px 18px;
            border-radius: 50px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: var(--transition);
            position: relative;
        }
        .nav-links a:hover { color: var(--primary); background: rgba(230,57,70,0.06); }
        .nav-links a.active {
            color: var(--text-white);
            background: var(--primary);
            font-weight: 600;
            box-shadow: 0 4px 15px rgba(230,57,70,0.3);
        }
        .nav-links a.active:hover { background: var(--primary-dark); }
        .nav-toggle { display: none; font-size: 1.5rem; color: var(--secondary); padding: 8px; border-radius: 8px; transition: var(--transition); }
        .nav-toggle:hover { background: rgba(0,0,0,0.05); }

        @media (max-width: 768px) {
            .nav-links {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: rgba(255,255,255,0.98);
                backdrop-filter: blur(16px);
                flex-direction: column;
                padding: 16px 24px 24px;
                gap: 4px;
                border-bottom: 1px solid var(--border-light);
                box-shadow: var(--shadow-md);
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: var(--transition);
                border-radius: 0 0 var(--radius-md) var(--radius-md);
            }
            .nav-links.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
            .nav-links a { width: 100%; text-align: center; padding: 12px 20px; font-size: 1.05rem; }
            .nav-toggle { display: block; }
            .nav-inner { padding: 0 16px; }
        }

        /* ===== Hero / Banner ===== */
        .page-hero {
            min-height: 420px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            padding: 120px 24px 80px;
            background: linear-gradient(135deg, var(--secondary) 0%, var(--bg-mid) 60%, var(--secondary-light) 100%);
            position: relative;
            overflow: hidden;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.15;
            mix-blend-mode: overlay;
        }
        .page-hero::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            right: 0;
            height: 80px;
            background: var(--bg-light);
            clip-path: ellipse(70% 100% at 50% 100%);
        }
        .page-hero .hero-content {
            position: relative;
            z-index: 2;
            max-width: 820px;
        }
        .page-hero .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255,255,255,0.12);
            backdrop-filter: blur(4px);
            padding: 6px 20px;
            border-radius: 50px;
            font-size: 0.85rem;
            color: var(--accent-light);
            margin-bottom: 20px;
            border: 1px solid rgba(255,255,255,0.08);
        }
        .page-hero .hero-badge i { font-size: 0.75rem; }
        .page-hero h1 {
            font-size: 3rem;
            font-weight: 800;
            color: var(--text-white);
            line-height: 1.2;
            margin-bottom: 20px;
            letter-spacing: -0.5px;
        }
        .page-hero h1 span { color: var(--accent); }
        .page-hero p {
            font-size: 1.15rem;
            color: rgba(255,255,255,0.85);
            max-width: 680px;
            margin: 0 auto 32px;
            line-height: 1.8;
        }
        .page-hero .hero-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
        .page-hero .btn-primary {
            padding: 14px 36px;
            background: var(--primary);
            color: var(--text-white);
            border-radius: 50px;
            font-size: 1.05rem;
            font-weight: 600;
            transition: var(--transition);
            box-shadow: 0 8px 30px rgba(230,57,70,0.35);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .page-hero .btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 12px 40px rgba(230,57,70,0.45); }
        .page-hero .btn-outline {
            padding: 14px 36px;
            background: transparent;
            color: var(--text-white);
            border: 2px solid rgba(255,255,255,0.3);
            border-radius: 50px;
            font-size: 1.05rem;
            font-weight: 600;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .page-hero .btn-outline:hover { border-color: var(--accent); color: var(--accent); background: rgba(244,162,97,0.1); transform: translateY(-2px); }

        @media (max-width: 768px) {
            .page-hero { min-height: 360px; padding: 100px 16px 60px; }
            .page-hero h1 { font-size: 2rem; }
            .page-hero p { font-size: 1rem; }
            .page-hero .hero-actions { flex-direction: column; align-items: center; }
            .page-hero .btn-primary, .page-hero .btn-outline { width: 100%; max-width: 320px; justify-content: center; }
        }
        @media (max-width: 520px) {
            .page-hero h1 { font-size: 1.6rem; }
        }

        /* ===== Section Common ===== */
        .section { padding: 80px 0; }
        .section-title {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-title h2 {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--secondary);
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }
        .section-title h2 i { color: var(--primary); margin-right: 8px; }
        .section-title p {
            font-size: 1.1rem;
            color: var(--text-secondary);
            max-width: 640px;
            margin: 0 auto;
            line-height: 1.7;
        }
        .section-title .title-bar {
            width: 60px;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            border-radius: 4px;
            margin: 16px auto 0;
        }
        @media (max-width: 768px) {
            .section { padding: 56px 0; }
            .section-title h2 { font-size: 1.7rem; }
            .section-title p { font-size: 1rem; }
        }

        /* ===== Features / 服务亮点 ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .feature-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 36px 28px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
            text-align: center;
        }
        .feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: rgba(230,57,70,0.15); }
        .feature-card .icon {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            margin: 0 auto 20px;
            color: var(--text-white);
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            box-shadow: 0 8px 24px rgba(230,57,70,0.2);
        }
        .feature-card h3 { font-size: 1.2rem; font-weight: 700; margin-bottom: 10px; color: var(--secondary); }
        .feature-card p { font-size: 0.95rem; color: var(--text-secondary); line-height: 1.7; }

        @media (max-width: 1024px) { .features-grid { grid-template-columns: repeat(2, 1fr); } }
        @media (max-width: 640px) { .features-grid { grid-template-columns: 1fr; } .feature-card { padding: 28px 20px; } }

        /* ===== Scenarios / 适用场景 ===== */
        .scenarios-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .scenario-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .scenario-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
        .scenario-card .img-wrap {
            height: 200px;
            overflow: hidden;
            position: relative;
        }
        .scenario-card .img-wrap img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition); }
        .scenario-card:hover .img-wrap img { transform: scale(1.05); }
        .scenario-card .img-wrap .tag {
            position: absolute;
            top: 16px;
            left: 16px;
            background: var(--primary);
            color: var(--text-white);
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 600;
            box-shadow: 0 4px 12px rgba(230,57,70,0.3);
        }
        .scenario-card .body { padding: 24px 24px 28px; }
        .scenario-card .body h3 { font-size: 1.15rem; font-weight: 700; margin-bottom: 8px; color: var(--secondary); }
        .scenario-card .body p { font-size: 0.92rem; color: var(--text-secondary); line-height: 1.7; }
        .scenario-card .body .scenario-meta { display: flex; gap: 16px; margin-top: 14px; flex-wrap: wrap; }
        .scenario-card .body .scenario-meta span { font-size: 0.82rem; color: var(--text-light); display: flex; align-items: center; gap: 4px; }
        .scenario-card .body .scenario-meta i { color: var(--primary); font-size: 0.75rem; }

        @media (max-width: 1024px) { .scenarios-grid { grid-template-columns: repeat(2, 1fr); } }
        @media (max-width: 640px) { .scenarios-grid { grid-template-columns: 1fr; } .scenario-card .img-wrap { height: 180px; } }

        /* ===== Process / 流程指引 ===== */
        .process-section { background: var(--bg-card); border-top: 1px solid var(--border-light); border-bottom: 1px solid var(--border-light); }
        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            position: relative;
        }
        .process-steps::before {
            content: '';
            position: absolute;
            top: 44px;
            left: 10%;
            right: 10%;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--accent), var(--secondary));
            border-radius: 3px;
            opacity: 0.3;
            z-index: 0;
        }
        .step-item {
            text-align: center;
            position: relative;
            z-index: 1;
        }
        .step-item .step-num {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: var(--text-white);
            font-size: 1.3rem;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
            box-shadow: 0 8px 24px rgba(230,57,70,0.25);
            position: relative;
            z-index: 2;
        }
        .step-item h4 { font-size: 1.05rem; font-weight: 700; color: var(--secondary); margin-bottom: 8px; }
        .step-item p { font-size: 0.9rem; color: var(--text-secondary); line-height: 1.6; max-width: 240px; margin: 0 auto; }

        @media (max-width: 900px) { .process-steps { grid-template-columns: repeat(2, 1fr); gap: 28px; } .process-steps::before { display: none; } }
        @media (max-width: 520px) { .process-steps { grid-template-columns: 1fr; gap: 24px; } }

        /* ===== FAQ ===== */
        .faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover { border-color: rgba(230,57,70,0.15); box-shadow: var(--shadow-sm); }
        .faq-question {
            padding: 20px 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-primary);
            cursor: pointer;
            background: none;
            width: 100%;
            text-align: left;
            transition: var(--transition);
        }
        .faq-question:hover { color: var(--primary); }
        .faq-question i { font-size: 0.85rem; color: var(--text-light); transition: var(--transition); }
        .faq-item.open .faq-question i { transform: rotate(180deg); color: var(--primary); }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 24px;
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.8;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }
        @media (max-width: 768px) {
            .faq-question { padding: 16px 18px; font-size: 0.95rem; }
            .faq-item.open .faq-answer { padding: 0 18px 16px; }
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--secondary) 0%, var(--secondary-light) 100%);
            padding: 80px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            opacity: 0.08;
            mix-blend-mode: overlay;
        }
        .cta-section .cta-content { position: relative; z-index: 2; }
        .cta-section h2 {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 16px;
        }
        .cta-section p {
            font-size: 1.1rem;
            color: rgba(255,255,255,0.8);
            max-width: 600px;
            margin: 0 auto 32px;
            line-height: 1.7;
        }
        .cta-section .btn-cta {
            padding: 16px 48px;
            background: var(--accent);
            color: var(--secondary);
            border-radius: 50px;
            font-size: 1.1rem;
            font-weight: 700;
            transition: var(--transition);
            box-shadow: 0 8px 30px rgba(244,162,97,0.35);
            display: inline-flex;
            align-items: center;
            gap: 12px;
        }
        .cta-section .btn-cta:hover { background: var(--accent-light); transform: translateY(-3px); box-shadow: 0 14px 40px rgba(244,162,97,0.45); }
        .cta-section .cta-note { margin-top: 16px; font-size: 0.85rem; color: rgba(255,255,255,0.5); }
        @media (max-width: 768px) {
            .cta-section { padding: 56px 0; }
            .cta-section h2 { font-size: 1.6rem; }
            .cta-section p { font-size: 1rem; }
            .cta-section .btn-cta { width: 100%; max-width: 360px; justify-content: center; }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255,255,255,0.8);
            padding: 60px 0 0;
        }
        .footer-inner {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 48px;
        }
        .footer-brand .logo { color: var(--text-white); margin-bottom: 16px; font-size: 1.3rem; }
        .footer-brand .logo span { -webkit-text-fill-color: var(--text-white); background: none; }
        .footer-brand .logo i { color: var(--accent); }
        .footer-brand p { font-size: 0.92rem; line-height: 1.8; color: rgba(255,255,255,0.6); max-width: 380px; }
        .footer-col h4 { font-size: 1rem; font-weight: 700; color: var(--text-white); margin-bottom: 18px; position: relative; padding-bottom: 10px; }
        .footer-col h4::after { content: ''; position: absolute; bottom: 0; left: 0; width: 30px; height: 3px; background: var(--primary); border-radius: 3px; }
        .footer-col a {
            display: block;
            padding: 6px 0;
            font-size: 0.9rem;
            color: rgba(255,255,255,0.55);
            transition: var(--transition);
        }
        .footer-col a:hover { color: var(--accent); padding-left: 6px; }
        .footer-bottom {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 24px 24px;
            border-top: 1px solid rgba(255,255,255,0.08);
            margin-top: 48px;
            text-align: center;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.4);
        }
        @media (max-width: 900px) {
            .footer-inner { grid-template-columns: 1fr 1fr; gap: 32px; }
            .footer-brand { grid-column: 1 / -1; }
        }
        @media (max-width: 640px) {
            .footer-inner { grid-template-columns: 1fr; gap: 28px; text-align: center; }
            .footer-brand .logo { justify-content: center; }
            .footer-brand p { margin: 0 auto; }
            .footer-col h4::after { left: 50%; transform: translateX(-50%); }
            .footer-col a:hover { padding-left: 0; }
        }

        /* ===== Utility ===== */
        .text-center { text-align: center; }
        .mt-16 { margin-top: 16px; }
        .mt-24 { margin-top: 24px; }
        .mb-16 { margin-bottom: 16px; }
        .mb-24 { margin-bottom: 24px; }

        /* ===== Responsive fine-tune ===== */
        @media (max-width: 520px) {
            .section-title h2 { font-size: 1.4rem; }
            .feature-card h3 { font-size: 1.05rem; }
            .step-item .step-num { width: 48px; height: 48px; font-size: 1.1rem; }
        }

        /* ===== Scrollbar ===== */
        ::-webkit-scrollbar { width: 8px; }
        ::-webkit-scrollbar-track { background: var(--border-light); }
        ::-webkit-scrollbar-thumb { background: var(--text-light); border-radius: 8px; }
        ::-webkit-scrollbar-thumb:hover { background: var(--text-secondary); }

        /* ===== Focus ===== */
        a:focus-visible, button:focus-visible, input:focus-visible {
            outline: 3px solid var(--primary);
            outline-offset: 2px;
            border-radius: 4px;
        }

        /* ===== Banner inner page ===== */
        .banner-overlay { position: relative; }

/* roulang page: article */
/* ===== 设计变量 ===== */
        :root {
            --color-primary: #2563eb;
            --color-primary-dark: #1e40af;
            --color-primary-light: #3b82f6;
            --color-secondary: #f59e0b;
            --color-secondary-dark: #d97706;
            --color-accent: #ef4444;
            --color-bg: #f8fafc;
            --color-bg-alt: #f1f5f9;
            --color-bg-card: #ffffff;
            --color-text: #1e293b;
            --color-text-weak: #64748b;
            --color-text-light: #94a3b8;
            --color-border: #e2e8f0;
            --color-border-light: #f1f5f9;
            --color-nav-bg: rgba(255, 255, 255, 0.85);
            --color-footer-bg: #0f172a;
            --color-footer-text: #cbd5e1;
            --color-hero-overlay: rgba(15, 23, 42, 0.65);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --radius-full: 9999px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.07);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.1);
            --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.15);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --max-width: 1200px;
            --content-width: 880px;
            --header-height: 72px;
        }

        /* ===== Reset ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background: var(--color-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: var(--color-primary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--color-primary-dark); }
        button { cursor: pointer; font-family: inherit; border: none; background: none; }
        input, textarea { font-family: inherit; font-size: 1rem; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--color-text); }
        h1 { font-size: 2.4rem; }
        h2 { font-size: 2rem; }
        h3 { font-size: 1.4rem; }
        h4 { font-size: 1.15rem; }

        /* ===== 容器 ===== */
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .container-narrow {
            max-width: var(--content-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== 导航 ===== */
        .site-header {
            position: fixed;
            top: 16px;
            left: 50%;
            transform: translateX(-50%);
            z-index: 1000;
            width: calc(100% - 32px);
            max-width: var(--max-width);
            background: var(--color-nav-bg);
            backdrop-filter: blur(18px) saturate(1.4);
            -webkit-backdrop-filter: blur(18px) saturate(1.4);
            border-radius: var(--radius-full);
            box-shadow: var(--shadow-md);
            border: 1px solid rgba(255, 255, 255, 0.3);
            transition: var(--transition);
        }
        .site-header.scrolled {
            box-shadow: var(--shadow-lg);
            background: rgba(255, 255, 255, 0.92);
        }
        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0 28px;
            height: var(--header-height);
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.25rem;
            font-weight: 800;
            color: var(--color-text);
            letter-spacing: -0.3px;
        }
        .logo i {
            font-size: 1.5rem;
            color: var(--color-primary);
            background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .logo span {
            background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-links a {
            padding: 8px 18px;
            border-radius: var(--radius-full);
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--color-text-weak);
            transition: var(--transition);
            position: relative;
        }
        .nav-links a:hover {
            color: var(--color-primary);
            background: rgba(37, 99, 235, 0.08);
        }
        .nav-links a.active {
            color: #fff;
            background: var(--color-primary);
            box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
        }
        .nav-links a.active:hover {
            background: var(--color-primary-dark);
            color: #fff;
        }
        .nav-toggle {
            display: none;
            font-size: 1.4rem;
            color: var(--color-text);
            padding: 8px 12px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }
        .nav-toggle:hover {
            background: var(--color-bg-alt);
        }

        /* ===== Hero 文章头 ===== */
        .article-hero {
            position: relative;
            min-height: 420px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            padding: 120px 24px 80px;
            margin-top: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            isolation: isolate;
        }
        .article-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: var(--color-hero-overlay);
            z-index: 0;
        }
        .article-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(15,23,42,0.3) 0%, rgba(15,23,42,0.7) 100%);
            z-index: 0;
        }
        .article-hero .hero-content {
            position: relative;
            z-index: 1;
            max-width: 800px;
        }
        .article-hero .hero-category {
            display: inline-block;
            padding: 6px 18px;
            border-radius: var(--radius-full);
            background: rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(6px);
            color: #fff;
            font-size: 0.85rem;
            font-weight: 500;
            letter-spacing: 0.5px;
            margin-bottom: 20px;
            border: 1px solid rgba(255, 255, 255, 0.2);
        }
        .article-hero h1 {
            color: #fff;
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.2;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
            margin-bottom: 20px;
        }
        .article-hero .hero-meta {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 24px;
            color: rgba(255, 255, 255, 0.8);
            font-size: 0.95rem;
            flex-wrap: wrap;
        }
        .article-hero .hero-meta span {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .article-hero .hero-meta i {
            font-size: 0.85rem;
            opacity: 0.7;
        }
        .article-hero .hero-meta .tag {
            display: inline-block;
            padding: 2px 14px;
            border-radius: var(--radius-full);
            background: rgba(245, 158, 11, 0.25);
            color: var(--color-secondary);
            font-size: 0.8rem;
            font-weight: 600;
            border: 1px solid rgba(245, 158, 11, 0.3);
        }

        /* ===== 文章正文 ===== */
        .article-body {
            padding: 60px 0 40px;
            background: var(--color-bg);
        }
        .article-body .container-narrow {
            background: var(--color-bg-card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 48px 56px;
            border: 1px solid var(--color-border-light);
        }
        .article-body .cms-content {
            font-size: 1.05rem;
            line-height: 1.9;
            color: var(--color-text);
        }
        .article-body .cms-content p {
            margin-bottom: 1.4em;
        }
        .article-body .cms-content h2,
        .article-body .cms-content h3 {
            margin-top: 1.8em;
            margin-bottom: 0.6em;
        }
        .article-body .cms-content img {
            border-radius: var(--radius-md);
            margin: 1.6em auto;
            box-shadow: var(--shadow-sm);
        }
        .article-body .cms-content ul,
        .article-body .cms-content ol {
            margin-bottom: 1.4em;
            padding-left: 1.6em;
        }
        .article-body .cms-content li {
            margin-bottom: 0.4em;
            list-style: disc;
        }
        .article-body .cms-content a {
            color: var(--color-primary);
            text-decoration: underline;
            text-underline-offset: 2px;
        }
        .article-body .cms-content blockquote {
            border-left: 4px solid var(--color-primary);
            background: var(--color-bg-alt);
            padding: 16px 24px;
            margin: 1.6em 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--color-text-weak);
            font-style: normal;
        }
        .article-not-found {
            text-align: center;
            padding: 60px 24px;
        }
        .article-not-found i {
            font-size: 3rem;
            color: var(--color-text-light);
            margin-bottom: 16px;
        }
        .article-not-found h3 {
            font-size: 1.6rem;
            margin-bottom: 12px;
            color: var(--color-text);
        }
        .article-not-found p {
            color: var(--color-text-weak);
            margin-bottom: 24px;
        }
        .article-not-found .btn-home {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-full);
            background: var(--color-primary);
            color: #fff;
            font-weight: 600;
            transition: var(--transition);
        }
        .article-not-found .btn-home:hover {
            background: var(--color-primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(37, 99, 235, 0.3);
        }

        /* ===== 相关推荐 ===== */
        .related-section {
            padding: 60px 0 80px;
            background: var(--color-bg-alt);
        }
        .related-section .section-title {
            text-align: center;
            margin-bottom: 44px;
        }
        .related-section .section-title h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .related-section .section-title p {
            color: var(--color-text-weak);
            font-size: 1.05rem;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .related-card {
            background: var(--color-bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border);
            transition: var(--transition);
        }
        .related-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: var(--color-primary-light);
        }
        .related-card .card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            transition: var(--transition);
        }
        .related-card:hover .card-img {
            transform: scale(1.03);
        }
        .related-card .card-body {
            padding: 20px 22px 24px;
        }
        .related-card .card-body h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--color-text);
        }
        .related-card .card-body p {
            font-size: 0.92rem;
            color: var(--color-text-weak);
            line-height: 1.6;
            margin-bottom: 14px;
        }
        .related-card .card-body .card-tag {
            display: inline-block;
            padding: 3px 12px;
            border-radius: var(--radius-full);
            background: rgba(37, 99, 235, 0.08);
            color: var(--color-primary);
            font-size: 0.78rem;
            font-weight: 600;
        }

        /* ===== FAQ ===== */
        .faq-section {
            padding: 60px 0 80px;
            background: var(--color-bg);
        }
        .faq-section .section-title {
            text-align: center;
            margin-bottom: 44px;
        }
        .faq-section .section-title h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .faq-section .section-title p {
            color: var(--color-text-weak);
            font-size: 1.05rem;
        }
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--color-bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--color-primary-light);
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            width: 100%;
            padding: 18px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-text);
            background: transparent;
            text-align: left;
            transition: var(--transition);
            gap: 16px;
        }
        .faq-question:hover {
            color: var(--color-primary);
        }
        .faq-question i {
            font-size: 0.9rem;
            color: var(--color-text-light);
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-item.active .faq-question i {
            transform: rotate(180deg);
            color: var(--color-primary);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px;
            color: var(--color-text-weak);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 70px 24px;
            background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
            text-align: center;
            position: relative;
            overflow: hidden;
            isolation: isolate;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.08;
            z-index: 0;
        }
        .cta-section .cta-inner {
            position: relative;
            z-index: 1;
            max-width: 640px;
            margin: 0 auto;
        }
        .cta-section h2 {
            color: #fff;
            font-size: 2.2rem;
            font-weight: 800;
            margin-bottom: 14px;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 1.1rem;
            margin-bottom: 32px;
            line-height: 1.7;
        }
        .cta-section .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 16px 40px;
            border-radius: var(--radius-full);
            background: #fff;
            color: var(--color-primary);
            font-weight: 700;
            font-size: 1.05rem;
            transition: var(--transition);
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
        }
        .cta-section .btn-cta:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.25);
            color: var(--color-primary-dark);
        }
        .cta-section .btn-cta i {
            font-size: 1rem;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--color-footer-bg);
            color: var(--color-footer-text);
            padding: 60px 24px 0;
        }
        .footer-inner {
            max-width: var(--max-width);
            margin: 0 auto;
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .footer-brand .logo {
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-brand .logo i {
            -webkit-text-fill-color: var(--color-primary-light);
        }
        .footer-brand .logo span {
            -webkit-text-fill-color: #fff;
        }
        .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.7;
            opacity: 0.7;
            max-width: 360px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 18px;
        }
        .footer-col a {
            display: block;
            color: var(--color-footer-text);
            font-size: 0.9rem;
            padding: 4px 0;
            opacity: 0.7;
            transition: var(--transition);
        }
        .footer-col a:hover {
            opacity: 1;
            color: #fff;
            padding-left: 4px;
        }
        .footer-bottom {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 20px 0;
            text-align: center;
            font-size: 0.85rem;
            opacity: 0.5;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .article-hero h1 { font-size: 2.2rem; }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                top: calc(var(--header-height) + 4px);
                left: 12px;
                right: 12px;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(18px);
                border-radius: var(--radius-lg);
                box-shadow: var(--shadow-xl);
                flex-direction: column;
                padding: 12px 8px;
                gap: 4px;
                border: 1px solid var(--color-border);
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links a {
                width: 100%;
                padding: 12px 20px;
                border-radius: var(--radius-sm);
            }
            .nav-toggle {
                display: block;
            }
            .site-header {
                top: 12px;
                width: calc(100% - 24px);
            }
            .nav-inner {
                padding: 0 18px;
            }
            .article-hero {
                min-height: 340px;
                padding: 100px 18px 60px;
            }
            .article-hero h1 { font-size: 1.8rem; }
            .article-hero .hero-meta {
                gap: 12px;
                font-size: 0.85rem;
            }
            .article-body .container-narrow {
                padding: 28px 20px;
            }
            .related-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-inner {
                grid-template-columns: 1fr;
                gap: 32px;
                text-align: center;
            }
            .footer-brand p {
                max-width: 100%;
            }
            .cta-section h2 { font-size: 1.7rem; }
            .cta-section .btn-cta {
                padding: 14px 32px;
                font-size: 0.95rem;
                width: 100%;
                justify-content: center;
            }
            h1 { font-size: 1.8rem; }
            h2 { font-size: 1.5rem; }
        }

        @media (max-width: 520px) {
            .article-hero h1 { font-size: 1.5rem; }
            .article-hero .hero-meta {
                flex-direction: column;
                gap: 8px;
            }
            .article-body .container-narrow {
                padding: 20px 16px;
                border-radius: var(--radius-md);
            }
            .logo span { font-size: 1.05rem; }
            .nav-inner { padding: 0 14px; }
            .related-card .card-img { height: 160px; }
        }

        /* ===== 工具类 ===== */
        .sr-only {
            position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
            overflow: hidden; clip: rect(0,0,0,0); border: 0;
        }
        .text-center { text-align: center; }
        .mt-8 { margin-top: 8px; }
        .mb-8 { margin-bottom: 8px; }
        .gap-8 { gap: 8px; }