/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a3a5c;
            --primary-light: #2a5a8c;
            --primary-dark: #0f2440;
            --accent: #e8a838;
            --accent-light: #f0c060;
            --accent-dark: #c88a20;
            --bg-light: #f8f9fc;
            --bg-white: #ffffff;
            --bg-dark: #0f1a2e;
            --text-dark: #1a1a2e;
            --text-body: #2d3748;
            --text-muted: #6b7a8f;
            --text-light: #a0b0c0;
            --border: #e2e8f0;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow: 0 8px 30px rgba(0,0,0,0.08);
            --shadow-lg: 0 20px 60px rgba(0,0,0,0.12);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --max-width: 1200px;
            --header-height: 72px;
            --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
        }

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

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

        /* ===== 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-height);
            background: rgba(255,255,255,0.12);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(255,255,255,0.15);
            transition: var(--transition);
        }
        .site-header.scrolled {
            background: rgba(255,255,255,0.92);
            border-bottom: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .logo {
            font-size: 22px;
            font-weight: 800;
            color: #fff;
            letter-spacing: 0.5px;
            display: flex;
            align-items: center;
            gap: 8px;
            text-shadow: 0 2px 12px rgba(0,0,0,0.15);
        }
        .logo i { color: var(--accent); font-size: 24px; }
        .site-header.scrolled .logo { color: var(--text-dark); text-shadow: none; }
        .logo:hover { color: var(--accent); }
        .nav-list {
            display: flex;
            align-items: center;
            gap: 32px;
        }
        .nav-list a {
            color: rgba(255,255,255,0.85);
            font-size: 15px;
            font-weight: 500;
            position: relative;
            padding: 4px 0;
        }
        .nav-list a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent);
            transition: var(--transition);
        }
        .nav-list a:hover::after,
        .nav-list a.active::after { width: 100%; }
        .nav-list a.active { color: var(--accent); }
        .site-header.scrolled .nav-list a { color: var(--text-body); }
        .site-header.scrolled .nav-list a.active { color: var(--accent); }
        .nav-cta {
            background: var(--accent);
            color: #fff !important;
            padding: 8px 22px !important;
            border-radius: 50px;
            font-weight: 600;
            font-size: 14px;
            transition: var(--transition);
            box-shadow: 0 4px 15px rgba(232,168,56,0.3);
        }
        .nav-cta:hover { background: var(--accent-dark); transform: translateY(-1px); box-shadow: 0 6px 20px rgba(232,168,56,0.4); }
        .nav-cta::after { display: none !important; }
        .mobile-toggle { display: none; background: none; border: none; color: #fff; font-size: 26px; cursor: pointer; padding: 4px; }
        .site-header.scrolled .mobile-toggle { color: var(--text-dark); }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, #0f1a2e 0%, #1a3a5c 50%, #0f2440 100%);
            overflow: hidden;
            padding: 120px 24px 80px;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.35;
            z-index: 0;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(232,168,56,0.08) 0%, transparent 60%);
            z-index: 1;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 880px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(232,168,56,0.18);
            border: 1px solid rgba(232,168,56,0.25);
            color: var(--accent-light);
            padding: 6px 20px;
            border-radius: 50px;
            font-size: 14px;
            font-weight: 500;
            margin-bottom: 28px;
            backdrop-filter: blur(8px);
        }
        .hero-badge i { font-size: 14px; }
        .hero h1 {
            font-size: clamp(36px, 6vw, 64px);
            font-weight: 800;
            color: #fff;
            line-height: 1.15;
            margin-bottom: 20px;
            text-shadow: 0 4px 30px rgba(0,0,0,0.3);
        }
        .hero h1 span { color: var(--accent); }
        .hero p {
            font-size: clamp(16px, 2vw, 20px);
            color: rgba(255,255,255,0.8);
            max-width: 680px;
            margin: 0 auto 36px;
            line-height: 1.7;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: var(--accent);
            color: #fff;
            padding: 14px 36px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 16px;
            transition: var(--transition);
            box-shadow: 0 8px 30px rgba(232,168,56,0.35);
            border: none;
            cursor: pointer;
        }
        .btn-primary:hover {
            background: var(--accent-dark);
            transform: translateY(-2px);
            box-shadow: 0 12px 40px rgba(232,168,56,0.45);
            color: #fff;
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: transparent;
            color: #fff;
            padding: 14px 36px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 16px;
            border: 1.5px solid rgba(255,255,255,0.25);
            transition: var(--transition);
            cursor: pointer;
        }
        .btn-outline:hover {
            background: rgba(255,255,255,0.08);
            border-color: var(--accent);
            color: var(--accent);
        }
        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 40px;
            justify-content: center;
            margin-top: 56px;
            padding-top: 40px;
            border-top: 1px solid rgba(255,255,255,0.1);
        }
        .hero-stat { text-align: center; }
        .hero-stat-num {
            font-size: 28px;
            font-weight: 800;
            color: #fff;
            display: block;
            line-height: 1.2;
        }
        .hero-stat-label {
            font-size: 14px;
            color: rgba(255,255,255,0.6);
            margin-top: 4px;
        }

        /* ===== 通用板块 ===== */
        .section {
            padding: 80px 24px;
        }
        .section-alt { background: var(--bg-white); }
        .section-dark { background: var(--bg-dark); color: rgba(255,255,255,0.85); }
        .section-dark h2, .section-dark h3 { color: #fff; }
        .section-header {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 48px;
        }
        .section-header h2 {
            font-size: clamp(28px, 3.5vw, 38px);
            margin-bottom: 14px;
        }
        .section-header p {
            font-size: 16px;
            color: var(--text-muted);
            line-height: 1.7;
        }
        .section-dark .section-header p { color: rgba(255,255,255,0.6); }
        .section-tag {
            display: inline-block;
            background: rgba(232,168,56,0.12);
            color: var(--accent);
            padding: 4px 16px;
            border-radius: 50px;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }

        /* ===== 核心优势卡片 ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 28px;
        }
        .feature-card {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 32px 28px;
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow);
            border-color: var(--accent);
        }
        .feature-icon {
            width: 56px;
            height: 56px;
            border-radius: 14px;
            background: rgba(232,168,56,0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            color: var(--accent);
            margin-bottom: 18px;
        }
        .feature-card h3 { font-size: 20px; margin-bottom: 10px; }
        .feature-card p { font-size: 15px; color: var(--text-muted); line-height: 1.7; }

        /* ===== 平台特色（图文） ===== */
        .feature-alt-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .feature-alt-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow);
            aspect-ratio: 4/3;
            background: var(--border);
        }
        .feature-alt-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .feature-alt-content h3 {
            font-size: 26px;
            margin-bottom: 16px;
        }
        .feature-alt-content p {
            font-size: 16px;
            color: var(--text-muted);
            line-height: 1.8;
            margin-bottom: 20px;
        }
        .feature-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .feature-list-item {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            font-size: 15px;
        }
        .feature-list-item i {
            color: var(--accent);
            font-size: 18px;
            margin-top: 2px;
            flex-shrink: 0;
        }

        /* ===== 资讯/内容列表（CMS） ===== */
        .content-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 24px;
        }
        .content-card {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .content-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow);
        }
        .content-card-img {
            aspect-ratio: 16/9;
            background: var(--border);
            overflow: hidden;
        }
        .content-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .content-card:hover .content-card-img img { transform: scale(1.04); }
        .content-card-body { padding: 20px 22px 24px; }
        .content-card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 10px;
        }
        .content-card-meta .badge {
            background: rgba(232,168,56,0.12);
            color: var(--accent);
            padding: 2px 12px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 12px;
        }
        .content-card h3 { font-size: 18px; margin-bottom: 8px; }
        .content-card h3 a { color: var(--text-dark); }
        .content-card h3 a:hover { color: var(--accent); }
        .content-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        /* ===== 使用流程 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 32px;
            position: relative;
        }
        .step-card {
            text-align: center;
            padding: 32px 20px;
            background: rgba(255,255,255,0.04);
            border: 1px solid rgba(255,255,255,0.08);
            border-radius: var(--radius);
            transition: var(--transition);
            position: relative;
        }
        .step-card:hover {
            background: rgba(255,255,255,0.08);
            border-color: rgba(232,168,56,0.3);
        }
        .step-num {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: var(--accent);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            font-weight: 800;
            margin: 0 auto 16px;
        }
        .step-card h3 { font-size: 18px; margin-bottom: 8px; }
        .step-card p { font-size: 14px; color: rgba(255,255,255,0.6); line-height: 1.7; }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover { border-color: var(--accent); }
        .faq-question {
            padding: 18px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            font-weight: 600;
            font-size: 16px;
            color: var(--text-dark);
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            transition: var(--transition);
        }
        .faq-question i { color: var(--accent); transition: var(--transition); font-size: 14px; }
        .faq-item.active .faq-question i { transform: rotate(180deg); }
        .faq-answer {
            padding: 0 24px 18px;
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.7;
            display: none;
        }
        .faq-item.active .faq-answer { display: block; }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
            padding: 80px 24px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.webp') center center / cover no-repeat;
            opacity: 0.08;
        }
        .cta-content {
            position: relative;
            z-index: 1;
            max-width: 700px;
            margin: 0 auto;
        }
        .cta-content h2 {
            font-size: clamp(28px, 3.5vw, 38px);
            color: #fff;
            margin-bottom: 16px;
        }
        .cta-content p {
            font-size: 16px;
            color: rgba(255,255,255,0.7);
            margin-bottom: 32px;
            line-height: 1.7;
        }
        .cta-content .btn-primary { font-size: 18px; padding: 16px 44px; }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            padding: 48px 24px 28px;
            border-top: 1px solid rgba(255,255,255,0.06);
        }
        .footer-inner {
            max-width: var(--max-width);
            margin: 0 auto;
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
        }
        .footer-brand .logo { color: #fff; font-size: 20px; margin-bottom: 12px; }
        .footer-brand p { font-size: 14px; color: rgba(255,255,255,0.5); line-height: 1.7; max-width: 360px; }
        .footer-col h4 { color: #fff; font-size: 16px; margin-bottom: 16px; }
        .footer-col a {
            display: block;
            color: rgba(255,255,255,0.5);
            font-size: 14px;
            padding: 4px 0;
            transition: var(--transition);
        }
        .footer-col a:hover { color: var(--accent); padding-left: 4px; }
        .footer-bottom {
            max-width: var(--max-width);
            margin: 32px auto 0;
            padding-top: 20px;
            border-top: 1px solid rgba(255,255,255,0.06);
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            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) {
            .feature-alt-grid { grid-template-columns: 1fr; gap: 32px; }
            .feature-alt-image { order: -1; }
            .footer-inner { grid-template-columns: 1fr 1fr; }
        }
        @media (max-width: 768px) {
            .nav-list { display: none; }
            .mobile-toggle { display: block; }
            .nav-list.open {
                display: flex;
                flex-direction: column;
                position: absolute;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: rgba(15,26,46,0.98);
                backdrop-filter: blur(20px);
                padding: 20px 24px;
                gap: 16px;
                border-bottom: 1px solid rgba(255,255,255,0.08);
                align-items: flex-start;
            }
            .site-header.scrolled .nav-list.open { background: rgba(255,255,255,0.98); }
            .hero { min-height: 90vh; padding: 100px 20px 60px; }
            .hero-stats { gap: 24px; }
            .hero-stat-num { font-size: 22px; }
            .section { padding: 56px 20px; }
            .features-grid { grid-template-columns: 1fr 1fr; }
            .content-grid { grid-template-columns: 1fr 1fr; }
            .steps-grid { grid-template-columns: 1fr 1fr; }
            .footer-inner { grid-template-columns: 1fr; gap: 28px; }
            .footer-bottom { flex-direction: column; text-align: center; }
        }
        @media (max-width: 520px) {
            .features-grid { grid-template-columns: 1fr; }
            .content-grid { grid-template-columns: 1fr; }
            .steps-grid { grid-template-columns: 1fr; }
            .hero-actions { flex-direction: column; align-items: center; }
            .btn-primary, .btn-outline { width: 100%; justify-content: center; }
            .hero h1 { font-size: 28px; }
        }

        /* ===== 工具类 ===== */
        .text-center { text-align: center; }
        .mt-12 { margin-top: 12px; }
        .mt-24 { margin-top: 24px; }
        .mt-36 { margin-top: 36px; }
        .gap-16 { gap: 16px; }
        .flex-center { display: flex; align-items: center; justify-content: center; }

/* roulang page: article */
:root {
            --primary: #1e3a8a;
            --primary-light: #2563eb;
            --primary-dark: #0f1f4a;
            --secondary: #f59e0b;
            --secondary-light: #fbbf24;
            --accent: #06b6d4;
            --bg-dark: #0a0f1e;
            --bg-card: #111827;
            --bg-card-hover: #1a2332;
            --bg-section: #0f172a;
            --text-light: #f1f5f9;
            --text-muted: #94a3b8;
            --text-soft: #cbd5e1;
            --border-color: rgba(255,255,255,0.08);
            --border-hover: rgba(255,255,255,0.18);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 22px;
            --radius-xl: 30px;
            --shadow-card: 0 8px 32px rgba(0,0,0,0.35);
            --shadow-hover: 0 14px 48px rgba(0,0,0,0.5);
            --transition: 0.3s cubic-bezier(0.4,0,0.2,1);
            --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Noto Sans SC', sans-serif;
            --max-width: 1200px;
            --header-height: 72px;
        }
        *,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
        html{scroll-behavior:smooth;scroll-padding-top:var(--header-height)}
        body{font-family:var(--font-sans);background:var(--bg-dark);color:var(--text-light);line-height:1.7;font-size:16px;-webkit-font-smoothing:antialiased}
        a{color:var(--primary-light);text-decoration:none;transition:var(--transition)}
        a:hover{color:var(--secondary);text-decoration:none}
        img{max-width:100%;height:auto;display:block;border-radius:var(--radius-sm)}
        button,.btn{cursor:pointer;font-family:inherit;font-size:inherit;border:none;outline:none;transition:var(--transition)}
        input{font-family:inherit;font-size:inherit;outline:none}
        ul{list-style:none}
        h1,h2,h3,h4,h5,h6{line-height:1.3;font-weight:700;color:var(--text-light)}
        .container{width:100%;max-width:var(--max-width);margin:0 auto;padding:0 24px}
        @media (max-width:768px){.container{padding:0 16px}}

        /* Header / Nav */
        .site-header{
            position:fixed;top:0;left:0;right:0;z-index:1000;
            background:rgba(10,15,30,0.68);
            backdrop-filter:blur(18px) saturate(1.4);
            -webkit-backdrop-filter:blur(18px) saturate(1.4);
            border-bottom:1px solid var(--border-color);
            height:var(--header-height);
            display:flex;align-items:center;
            transition:var(--transition);
        }
        .site-header.scrolled{
            background:rgba(10,15,30,0.92);
            box-shadow:0 4px 30px rgba(0,0,0,0.5);
        }
        .header-inner{
            display:flex;align-items:center;justify-content:space-between;
            width:100%;max-width:var(--max-width);margin:0 auto;padding:0 24px;
            height:100%;
        }
        .logo{
            display:flex;align-items:center;gap:10px;
            font-size:1.5rem;font-weight:800;color:var(--text-light);
            letter-spacing:-0.3px;
        }
        .logo i{color:var(--secondary);font-size:1.6rem;}
        .logo span{background:linear-gradient(135deg,var(--secondary),var(--accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;}
        .nav-list{display:flex;align-items:center;gap:32px;}
        .nav-list li a{
            color:var(--text-soft);font-weight:500;font-size:0.95rem;
            padding:6px 0;position:relative;transition:var(--transition);
            letter-spacing:0.2px;
        }
        .nav-list li a::after{
            content:'';position:absolute;bottom:-2px;left:0;width:0;height:2px;
            background:var(--secondary);transition:var(--transition);border-radius:2px;
        }
        .nav-list li a:hover,.nav-list li a.active{color:var(--text-light)}
        .nav-list li a:hover::after,.nav-list li a.active::after{width:100%}
        .nav-list li a.active{color:var(--secondary)}
        .nav-list li a.nav-cta{
            background:linear-gradient(135deg,var(--secondary),#d97706);
            color:#0a0f1e;font-weight:700;padding:10px 24px;border-radius:var(--radius-xl);
            display:flex;align-items:center;gap:8px;font-size:0.9rem;
            box-shadow:0 4px 20px rgba(245,158,11,0.3);
        }
        .nav-list li a.nav-cta::after{display:none}
        .nav-list li a.nav-cta:hover{
            transform:translateY(-2px);box-shadow:0 8px 30px rgba(245,158,11,0.45);
            color:#0a0f1e;
        }
        .nav-toggle{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:4px;background:none;border:none;}
        .nav-toggle span{display:block;width:26px;height:2.5px;background:var(--text-light);border-radius:4px;transition:var(--transition)}
        @media (max-width:768px){
            .nav-toggle{display:flex}
            .nav-list{
                position:fixed;top:var(--header-height);left:0;right:0;
                background:rgba(10,15,30,0.96);backdrop-filter:blur(20px);
                flex-direction:column;padding:24px 32px 32px;gap:20px;
                border-bottom:1px solid var(--border-color);
                transform:translateY(-120%);opacity:0;pointer-events:none;
                transition:var(--transition);
            }
            .nav-list.open{transform:translateY(0);opacity:1;pointer-events:all}
            .nav-list li a{font-size:1.05rem;padding:8px 0}
            .nav-list li a.nav-cta{justify-content:center;padding:12px 24px;font-size:1rem}
        }

        /* Article Hero */
        .article-hero{
            margin-top:var(--header-height);
            padding:80px 0 60px;
            background:linear-gradient(135deg,var(--bg-dark) 0%,var(--bg-section) 50%,#0f1a2e 100%);
            position:relative;overflow:hidden;
            border-bottom:1px solid var(--border-color);
        }
        .article-hero::before{
            content:'';position:absolute;top:-40%;right:-20%;width:600px;height:600px;
            background:radial-gradient(circle,rgba(6,182,212,0.08),transparent 70%);
            pointer-events:none;
        }
        .article-hero .container{position:relative;z-index:2}
        .article-breadcrumb{
            display:flex;align-items:center;gap:10px;flex-wrap:wrap;
            font-size:0.85rem;color:var(--text-muted);margin-bottom:20px;
        }
        .article-breadcrumb a{color:var(--text-muted)}
        .article-breadcrumb a:hover{color:var(--secondary)}
        .article-breadcrumb .sep{color:var(--text-muted);opacity:0.5}
        .article-hero h1{
            font-size:2.6rem;font-weight:800;line-height:1.25;
            max-width:900px;margin-bottom:16px;
            background:linear-gradient(135deg,#fff,var(--text-soft));
            -webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;
        }
        .article-meta{
            display:flex;align-items:center;gap:24px;flex-wrap:wrap;
            font-size:0.9rem;color:var(--text-muted);margin-top:8px;
        }
        .article-meta i{margin-right:6px;color:var(--secondary)}
        .article-meta .category-tag{
            display:inline-block;padding:4px 16px;border-radius:var(--radius-xl);
            background:rgba(245,158,11,0.15);color:var(--secondary);
            font-weight:600;font-size:0.8rem;border:1px solid rgba(245,158,11,0.2);
        }
        @media (max-width:768px){
            .article-hero{padding:60px 0 40px}
            .article-hero h1{font-size:1.8rem}
            .article-meta{gap:12px;font-size:0.8rem}
        }

        /* Article Main */
        .article-main{padding:60px 0 80px;background:var(--bg-dark)}
        .article-layout{
            display:grid;grid-template-columns:1fr 340px;gap:48px;
            align-items:start;
        }
        .article-content{
            background:var(--bg-card);border-radius:var(--radius-md);
            padding:40px;border:1px solid var(--border-color);
            box-shadow:var(--shadow-card);
            font-size:1.05rem;line-height:1.85;color:var(--text-soft);
        }
        .article-content p{margin-bottom:20px}
        .article-content h2,.article-content h3{
            color:var(--text-light);margin-top:36px;margin-bottom:16px;
            font-weight:700;
        }
        .article-content h2{font-size:1.6rem;border-bottom:1px solid var(--border-color);padding-bottom:10px}
        .article-content h3{font-size:1.25rem}
        .article-content ul,.article-content ol{padding-left:24px;margin-bottom:20px}
        .article-content li{margin-bottom:8px}
        .article-content img{border-radius:var(--radius-sm);margin:24px 0;box-shadow:var(--shadow-card)}
        .article-content blockquote{
            border-left:4px solid var(--secondary);padding:16px 24px;
            background:rgba(245,158,11,0.06);border-radius:0 var(--radius-sm) var(--radius-sm) 0;
            margin:24px 0;color:var(--text-soft);font-style:italic;
        }
        .article-content a{color:var(--accent);border-bottom:1px solid rgba(6,182,212,0.3)}
        .article-content a:hover{color:var(--secondary);border-bottom-color:var(--secondary)}
        .article-content .not-found{
            text-align:center;padding:60px 20px;
            background:rgba(255,255,255,0.02);border-radius:var(--radius-md);
            border:1px dashed var(--border-color);
        }
        .article-content .not-found i{font-size:3rem;color:var(--text-muted);margin-bottom:16px;display:block}
        .article-content .not-found p{font-size:1.1rem;color:var(--text-muted)}
        .article-content .not-found a{display:inline-block;margin-top:20px;padding:10px 28px;background:var(--primary-light);border-radius:var(--radius-xl);color:#fff;font-weight:600;border:none}
        .article-content .not-found a:hover{background:var(--primary);transform:translateY(-2px);color:#fff}

        /* Sidebar */
        .article-sidebar{display:flex;flex-direction:column;gap:32px;}
        .sidebar-card{
            background:var(--bg-card);border-radius:var(--radius-md);
            padding:28px;border:1px solid var(--border-color);
            box-shadow:var(--shadow-card);
        }
        .sidebar-card h3{
            font-size:1.1rem;font-weight:700;margin-bottom:16px;
            display:flex;align-items:center;gap:10px;
            color:var(--text-light);
        }
        .sidebar-card h3 i{color:var(--secondary)}
        .sidebar-list{display:flex;flex-direction:column;gap:12px}
        .sidebar-list a{
            display:flex;align-items:center;gap:12px;
            color:var(--text-soft);font-size:0.9rem;padding:10px 14px;
            border-radius:var(--radius-sm);background:rgba(255,255,255,0.02);
            border:1px solid transparent;transition:var(--transition);
        }
        .sidebar-list a:hover{
            background:rgba(245,158,11,0.06);border-color:rgba(245,158,11,0.15);
            color:var(--secondary);transform:translateX(4px);
        }
        .sidebar-list a i{color:var(--accent);font-size:0.85rem;width:20px;text-align:center}
        .sidebar-cta{
            background:linear-gradient(135deg,rgba(245,158,11,0.12),rgba(6,182,212,0.08));
            border:1px solid rgba(245,158,11,0.2);text-align:center;
            padding:32px 24px;
        }
        .sidebar-cta h3{justify-content:center}
        .sidebar-cta p{color:var(--text-muted);font-size:0.9rem;margin-bottom:20px}
        .sidebar-cta .btn-cta{
            display:inline-flex;align-items:center;gap:10px;
            background:linear-gradient(135deg,var(--secondary),#d97706);
            color:#0a0f1e;font-weight:700;padding:12px 32px;border-radius:var(--radius-xl);
            box-shadow:0 4px 20px rgba(245,158,11,0.3);font-size:0.95rem;
        }
        .sidebar-cta .btn-cta:hover{transform:translateY(-3px);box-shadow:0 8px 32px rgba(245,158,11,0.45);color:#0a0f1e}

        @media (max-width:992px){
            .article-layout{grid-template-columns:1fr;gap:40px}
            .article-content{padding:28px}
        }
        @media (max-width:768px){
            .article-main{padding:40px 0 60px}
            .article-content{padding:20px;font-size:0.98rem}
            .sidebar-card{padding:20px}
        }

        /* FAQ Section */
        .faq-section{
            padding:70px 0;background:var(--bg-section);
            border-top:1px solid var(--border-color);
        }
        .faq-section .section-title{
            text-align:center;font-size:2rem;font-weight:800;margin-bottom:12px;
        }
        .faq-section .section-sub{
            text-align:center;color:var(--text-muted);max-width:600px;margin:0 auto 48px;
            font-size:1rem;
        }
        .faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;max-width:960px;margin:0 auto}
        .faq-item{
            background:var(--bg-card);border-radius:var(--radius-md);
            padding:24px 28px;border:1px solid var(--border-color);
            transition:var(--transition);cursor:pointer;
        }
        .faq-item:hover{border-color:var(--border-hover);box-shadow:var(--shadow-card)}
        .faq-item h4{font-size:1.05rem;font-weight:600;margin-bottom:8px;display:flex;align-items:center;gap:10px;color:var(--text-light)}
        .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;padding-left:26px}
        @media (max-width:768px){
            .faq-grid{grid-template-columns:1fr}
            .faq-section .section-title{font-size:1.6rem}
            .faq-item{padding:18px 20px}
        }

        /* Related / CTA */
        .related-section{
            padding:60px 0 80px;background:var(--bg-dark);
        }
        .related-section .section-title{
            text-align:center;font-size:1.8rem;font-weight:800;margin-bottom:40px;
        }
        .related-grid{
            display:grid;grid-template-columns:repeat(3,1fr);gap:24px;
        }
        .related-card{
            background:var(--bg-card);border-radius:var(--radius-md);
            overflow:hidden;border:1px solid var(--border-color);
            transition:var(--transition);display:block;
        }
        .related-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover);border-color:var(--border-hover)}
        .related-card .card-img{height:180px;overflow:hidden}
        .related-card .card-img img{width:100%;height:100%;object-fit:cover;transition:var(--transition)}
        .related-card:hover .card-img img{transform:scale(1.05)}
        .related-card .card-body{padding:20px 24px 24px}
        .related-card .card-body h4{font-size:1rem;font-weight:600;margin-bottom:6px;color:var(--text-light)}
        .related-card .card-body p{color:var(--text-muted);font-size:0.85rem;line-height:1.5}
        @media (max-width:992px){.related-grid{grid-template-columns:1fr 1fr}}
        @media (max-width:600px){.related-grid{grid-template-columns:1fr}}

        /* Footer */
        .site-footer{
            background:var(--bg-card);border-top:1px solid var(--border-color);
            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{font-size:1.4rem;margin-bottom:16px}
        .footer-brand p{color:var(--text-muted);font-size:0.9rem;line-height:1.7;max-width:400px}
        .footer-col h4{font-size:0.95rem;font-weight:700;margin-bottom:18px;color:var(--text-light);letter-spacing:0.3px}
        .footer-col a{
            display:block;color:var(--text-muted);font-size:0.88rem;padding:6px 0;
            transition:var(--transition);
        }
        .footer-col a:hover{color:var(--secondary);padding-left:6px}
        .footer-col a i{width:20px;margin-right:4px}
        .footer-bottom{
            max-width:var(--max-width);margin:48px auto 0;padding:20px 24px;
            border-top:1px solid var(--border-color);
            display:flex;justify-content:space-between;align-items:center;
            flex-wrap:wrap;gap:12px;font-size:0.82rem;color:var(--text-muted);
        }
        .footer-bottom a{color:var(--text-muted)}
        .footer-bottom a:hover{color:var(--secondary)}
        @media (max-width:768px){
            .footer-inner{grid-template-columns:1fr;gap:32px}
            .footer-bottom{flex-direction:column;text-align:center}
        }

        /* JSON-LD */
        .json-ld{display:none}

        /* Misc */
        .text-center{text-align:center}
        .mt-8{margin-top:8px}
        .i-mr{margin-right:6px}

/* roulang page: category1 */
/* === 设计变量 === */
        :root {
            --primary: #0b1f33;
            --primary-light: #142d4a;
            --primary-dark: #071222;
            --accent: #d4a33d;
            --accent-hover: #c4932e;
            --accent-glow: rgba(212, 163, 61, 0.25);
            --bg: #ffffff;
            --bg-alt: #f2f6fc;
            --bg-card: #ffffff;
            --text: #1a1a2e;
            --text-secondary: #4a5568;
            --text-light: #8a94a6;
            --border: #e6edf5;
            --shadow-sm: 0 2px 8px rgba(11, 31, 51, 0.06);
            --shadow: 0 8px 32px rgba(11, 31, 51, 0.10);
            --shadow-lg: 0 20px 60px rgba(11, 31, 51, 0.14);
            --radius: 16px;
            --radius-sm: 10px;
            --radius-xs: 6px;
            --transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --max-width: 1200px;
            --header-h: 72px;
        }

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

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

        body {
            font-family: var(--font);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
        }

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

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

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

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

        ul,
        ol {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.25;
            font-weight: 700;
            color: var(--primary);
        }

        h1 {
            font-size: clamp(2.2rem, 5vw, 3.6rem);
        }
        h2 {
            font-size: clamp(1.6rem, 3.2vw, 2.4rem);
        }
        h3 {
            font-size: clamp(1.2rem, 2vw, 1.6rem);
        }
        h4 {
            font-size: 1.1rem;
        }

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

        .container-wide {
            max-width: 1320px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* === 导航（透明玻璃沉浸式） === */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            padding: 0 24px;
            height: var(--header-h);
            display: flex;
            align-items: center;
            justify-content: space-between;
            background: rgba(255, 255, 255, 0.12);
            backdrop-filter: blur(18px) saturate(1.3);
            -webkit-backdrop-filter: blur(18px) saturate(1.3);
            border-bottom: 1px solid rgba(255, 255, 255, 0.20);
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.06);
            transition: var(--transition);
        }

        .site-header.scrolled {
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(24px) saturate(1.5);
            -webkit-backdrop-filter: blur(24px) saturate(1.5);
            border-bottom: 1px solid rgba(11, 31, 51, 0.08);
            box-shadow: 0 4px 30px rgba(11, 31, 51, 0.08);
        }

        .header-inner {
            max-width: var(--max-width);
            width: 100%;
            margin: 0 auto;
            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(--primary);
            letter-spacing: -0.3px;
        }

        .logo i {
            color: var(--accent);
            font-size: 1.5rem;
        }

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

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

        .nav-list {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .nav-list li a {
            padding: 8px 18px;
            border-radius: 50px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            background: transparent;
            transition: var(--transition);
            position: relative;
        }

        .nav-list li a:hover {
            color: var(--primary);
            background: rgba(11, 31, 51, 0.06);
        }

        .nav-list li a.active {
            color: var(--primary);
            background: rgba(11, 31, 51, 0.08);
            font-weight: 600;
        }

        .nav-list li a.nav-cta {
            background: var(--accent);
            color: #fff;
            padding: 8px 22px;
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 6px;
            box-shadow: 0 4px 16px var(--accent-glow);
        }

        .nav-list li a.nav-cta:hover {
            background: var(--accent-hover);
            transform: translateY(-1px);
            box-shadow: 0 6px 24px var(--accent-glow);
        }

        .nav-toggle {
            display: none;
            background: none;
            font-size: 1.6rem;
            color: var(--primary);
            cursor: pointer;
            padding: 4px 8px;
            border-radius: var(--radius-xs);
        }

        .nav-toggle:hover {
            background: rgba(11, 31, 51, 0.06);
        }

        /* === 移动端导航 === */
        @media (max-width: 768px) {
            .nav-toggle {
                display: block;
            }

            .nav-list {
                position: fixed;
                top: var(--header-h);
                left: 0;
                width: 100%;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 20px 24px 32px;
                gap: 6px;
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow);
                transform: translateY(-110%);
                opacity: 0;
                pointer-events: none;
                transition: var(--transition);
                border-radius: 0 0 var(--radius) var(--radius);
            }

            .nav-list.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }

            .nav-list li a {
                width: 100%;
                padding: 12px 18px;
                border-radius: var(--radius-sm);
                font-size: 1.05rem;
            }

            .nav-list li a.nav-cta {
                justify-content: center;
                margin-top: 8px;
            }
        }

        /* === Hero 区域 === */
        .hero {
            position: relative;
            min-height: 88vh;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(145deg, var(--primary-dark) 0%, var(--primary) 60%, var(--primary-light) 100%);
            overflow: hidden;
            padding: 120px 24px 80px;
        }

        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.18;
            mix-blend-mode: overlay;
            pointer-events: none;
        }

        .hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 120px;
            background: linear-gradient(to top, var(--bg), transparent);
            pointer-events: none;
        }

        .hero-grid {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
            max-width: var(--max-width);
            width: 100%;
        }

        .hero-content {
            color: #fff;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(212, 163, 61, 0.18);
            border: 1px solid rgba(212, 163, 61, 0.30);
            padding: 6px 18px 6px 14px;
            border-radius: 50px;
            font-size: 0.85rem;
            color: var(--accent);
            font-weight: 500;
            margin-bottom: 24px;
            backdrop-filter: blur(4px);
        }

        .hero-badge i {
            font-size: 0.75rem;
        }

        .hero-content h1 {
            color: #fff;
            font-size: clamp(2.4rem, 5.5vw, 3.8rem);
            font-weight: 800;
            letter-spacing: -0.5px;
            line-height: 1.15;
            margin-bottom: 20px;
        }

        .hero-content h1 span {
            color: var(--accent);
        }

        .hero-content p {
            font-size: 1.15rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.80);
            max-width: 540px;
            margin-bottom: 32px;
        }

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

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 34px;
            background: var(--accent);
            color: #fff;
            font-weight: 700;
            font-size: 1.05rem;
            border-radius: 50px;
            box-shadow: 0 8px 30px var(--accent-glow);
            transition: var(--transition);
            cursor: pointer;
            border: none;
        }

        .btn-primary:hover {
            background: var(--accent-hover);
            transform: translateY(-3px);
            box-shadow: 0 12px 40px var(--accent-glow);
            color: #fff;
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 34px;
            background: rgba(255, 255, 255, 0.10);
            color: #fff;
            font-weight: 600;
            font-size: 1.05rem;
            border-radius: 50px;
            border: 1px solid rgba(255, 255, 255, 0.20);
            transition: var(--transition);
            cursor: pointer;
        }

        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.18);
            color: #fff;
            transform: translateY(-3px);
        }

        .hero-visual {
            display: flex;
            justify-content: center;
            align-items: center;
            position: relative;
        }

        .hero-visual img {
            width: 100%;
            max-width: 520px;
            border-radius: var(--radius);
            box-shadow: var(--shadow-lg);
            transform: perspective(800px) rotateY(-4deg) rotateX(2deg);
            transition: var(--transition);
            border: 1px solid rgba(255, 255, 255, 0.08);
        }

        .hero-visual img:hover {
            transform: perspective(800px) rotateY(0deg) rotateX(0deg);
        }

        .hero-stats-mini {
            display: flex;
            gap: 24px;
            margin-top: 28px;
            flex-wrap: wrap;
        }

        .hero-stats-mini .stat {
            color: rgba(255, 255, 255, 0.70);
            font-size: 0.9rem;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .hero-stats-mini .stat strong {
            color: #fff;
            font-size: 1.2rem;
        }

        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
                text-align: center;
                gap: 40px;
            }

            .hero-content p {
                max-width: 100%;
            }

            .hero-actions {
                justify-content: center;
            }

            .hero-stats-mini {
                justify-content: center;
            }

            .hero-visual img {
                max-width: 400px;
                transform: none;
            }

            .hero-visual img:hover {
                transform: none;
            }
        }

        @media (max-width: 520px) {
            .hero {
                min-height: 92vh;
                padding: 100px 16px 60px;
            }

            .hero-actions {
                flex-direction: column;
                align-items: center;
            }

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

        /* === 板块通用 === */
        .section {
            padding: 80px 24px;
        }

        .section-alt {
            background: var(--bg-alt);
        }

        .section-dark {
            background: var(--primary);
            color: #fff;
        }

        .section-dark h2,
        .section-dark h3 {
            color: #fff;
        }

        .section-header {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 56px;
        }

        .section-header h2 {
            margin-bottom: 16px;
        }

        .section-header p {
            color: var(--text-secondary);
            font-size: 1.1rem;
            line-height: 1.7;
        }

        .section-dark .section-header p {
            color: rgba(255, 255, 255, 0.70);
        }

        .section-tag {
            display: inline-block;
            background: rgba(212, 163, 61, 0.12);
            color: var(--accent);
            font-size: 0.8rem;
            font-weight: 600;
            padding: 4px 16px;
            border-radius: 50px;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
            text-transform: uppercase;
        }

        .section-dark .section-tag {
            background: rgba(212, 163, 61, 0.18);
        }

        /* === 平台概览 === */
        .overview-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .overview-text h2 {
            margin-bottom: 16px;
        }

        .overview-text p {
            color: var(--text-secondary);
            margin-bottom: 16px;
            font-size: 1.05rem;
            line-height: 1.8;
        }

        .overview-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            margin-top: 20px;
        }

        .overview-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            font-size: 1rem;
            color: var(--text-secondary);
        }

        .overview-list li i {
            color: var(--accent);
            font-size: 1.1rem;
            margin-top: 3px;
            flex-shrink: 0;
        }

        .overview-image img {
            width: 100%;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
        }

        @media (max-width: 768px) {
            .overview-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .overview-image {
                order: -1;
            }
        }

        /* === 核心优势 === */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .feature-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 32px 24px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            transition: var(--transition);
            text-align: center;
        }

        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow);
            border-color: rgba(212, 163, 61, 0.20);
        }

        .feature-card .icon {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: rgba(212, 163, 61, 0.10);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            font-size: 1.8rem;
            color: var(--accent);
            transition: var(--transition);
        }

        .feature-card:hover .icon {
            background: var(--accent);
            color: #fff;
            transform: scale(1.05);
        }

        .feature-card h3 {
            margin-bottom: 10px;
            font-size: 1.15rem;
        }

        .feature-card p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.6;
        }

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

        @media (max-width: 520px) {
            .features-grid {
                grid-template-columns: 1fr;
            }
        }

        /* === 使用流程 === */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 16px;
            counter-reset: step;
        }

        .step-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 32px 18px;
            text-align: center;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            position: relative;
        }

        .step-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow);
        }

        .step-card .step-num {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            font-weight: 700;
            margin: 0 auto 16px;
            transition: var(--transition);
        }

        .step-card:hover .step-num {
            background: var(--accent);
            transform: scale(1.08);
        }

        .step-card h4 {
            margin-bottom: 8px;
            font-size: 1.05rem;
        }

        .step-card p {
            color: var(--text-secondary);
            font-size: 0.9rem;
            line-height: 1.5;
        }

        .step-card .step-arrow {
            position: absolute;
            right: -12px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--accent);
            font-size: 1.2rem;
            opacity: 0.5;
        }

        .step-card:last-child .step-arrow {
            display: none;
        }

        @media (max-width: 1024px) {
            .steps-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .step-card:nth-child(3) .step-arrow {
                display: none;
            }
        }

        @media (max-width: 640px) {
            .steps-grid {
                grid-template-columns: 1fr 1fr;
            }
            .step-card .step-arrow {
                display: none;
            }
        }

        @media (max-width: 400px) {
            .steps-grid {
                grid-template-columns: 1fr;
            }
        }

        /* === 适用场景 === */
        .scenes-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .scene-card {
            border-radius: var(--radius);
            overflow: hidden;
            background: var(--bg-card);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            transition: var(--transition);
        }

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

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

        .scene-card .scene-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
            border-radius: 0;
        }

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

        .scene-card .scene-body {
            padding: 24px 20px 28px;
        }

        .scene-card .scene-body h3 {
            margin-bottom: 8px;
            font-size: 1.1rem;
        }

        .scene-card .scene-body p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.6;
        }

        .scene-card .scene-tag {
            display: inline-block;
            background: rgba(212, 163, 61, 0.10);
            color: var(--accent);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 2px 12px;
            border-radius: 50px;
            margin-bottom: 12px;
        }

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

        /* === 数据见证 === */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
        }

        .stat-card {
            padding: 32px 16px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: var(--radius);
            border: 1px solid rgba(255, 255, 255, 0.08);
            transition: var(--transition);
        }

        .stat-card:hover {
            background: rgba(255, 255, 255, 0.10);
            transform: translateY(-4px);
        }

        .stat-card .stat-number {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.1;
            margin-bottom: 6px;
        }

        .stat-card .stat-label {
            color: rgba(255, 255, 255, 0.70);
            font-size: 0.95rem;
            font-weight: 500;
        }

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

        @media (max-width: 400px) {
            .stats-grid {
                grid-template-columns: 1fr;
            }
        }

        /* === FAQ === */
        .faq-grid {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-item:hover {
            border-color: rgba(212, 163, 61, 0.20);
        }

        .faq-question {
            padding: 18px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            font-weight: 600;
            font-size: 1.05rem;
            color: var(--primary);
            gap: 16px;
            user-select: none;
            transition: var(--transition);
        }

        .faq-question:hover {
            color: var(--accent-hover);
        }

        .faq-question i {
            font-size: 0.9rem;
            color: var(--accent);
            transition: var(--transition);
            flex-shrink: 0;
        }

        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px;
            color: var(--text-secondary);
            line-height: 1.7;
            font-size: 0.98rem;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }

        .section-dark .faq-item {
            background: rgba(255, 255, 255, 0.06);
            border-color: rgba(255, 255, 255, 0.10);
        }

        .section-dark .faq-question {
            color: #fff;
        }

        .section-dark .faq-answer {
            color: rgba(255, 255, 255, 0.75);
        }

        /* === CTA === */
        .cta-section {
            padding: 80px 24px;
            background: linear-gradient(145deg, var(--primary-dark), var(--primary));
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.webp') center center / cover no-repeat;
            opacity: 0.08;
            mix-blend-mode: overlay;
            pointer-events: none;
        }

        .cta-inner {
            position: relative;
            z-index: 2;
            max-width: 680px;
            margin: 0 auto;
            text-align: center;
            color: #fff;
        }

        .cta-inner h2 {
            color: #fff;
            font-size: clamp(1.8rem, 3.5vw, 2.6rem);
            margin-bottom: 16px;
        }

        .cta-inner p {
            color: rgba(255, 255, 255, 0.75);
            font-size: 1.1rem;
            margin-bottom: 32px;
            line-height: 1.7;
        }

        .cta-inner .btn-primary {
            font-size: 1.1rem;
            padding: 16px 44px;
        }

        .cta-inner .btn-secondary {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(255, 255, 255, 0.15);
        }

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

        /* === 页脚 === */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, 0.75);
            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, 0.08);
        }

        .footer-brand .logo {
            color: #fff;
            margin-bottom: 16px;
        }

        .footer-brand p {
            font-size: 0.95rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.60);
            max-width: 380px;
        }

        .footer-col h4 {
            color: #fff;
            font-size: 1.05rem;
            margin-bottom: 16px;
        }

        .footer-col a {
            display: block;
            color: rgba(255, 255, 255, 0.60);
            font-size: 0.95rem;
            padding: 5px 0;
            transition: var(--transition);
        }

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

        .footer-col a i {
            width: 20px;
            color: var(--accent);
        }

        .footer-bottom {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 20px 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.88rem;
            color: rgba(255, 255, 255, 0.50);
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.60);
        }

        .footer-bottom a:hover {
            color: var(--accent);
        }

        @media (max-width: 768px) {
            .footer-inner {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* === 通用工具 === */
        .text-center {
            text-align: center;
        }

        .mt-16 {
            margin-top: 16px;
        }
        .mt-24 {
            margin-top: 24px;
        }
        .mt-32 {
            margin-top: 32px;
        }
        .mb-16 {
            margin-bottom: 16px;
        }
        .mb-24 {
            margin-bottom: 24px;
        }
        .mb-32 {
            margin-bottom: 32px;
        }

        /* === 响应式微调 === */
        @media (max-width: 520px) {
            .section {
                padding: 56px 16px;
            }

            .section-header {
                margin-bottom: 36px;
            }

            .hero-content h1 {
                font-size: clamp(1.8rem, 8vw, 2.6rem);
            }

            .hero-content p {
                font-size: 1rem;
            }
        }

        /* === 滚动条美化 === */
        ::-webkit-scrollbar {
            width: 8px;
        }
        ::-webkit-scrollbar-track {
            background: var(--bg-alt);
        }
        ::-webkit-scrollbar-thumb {
            background: rgba(11, 31, 51, 0.25);
            border-radius: 10px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: rgba(11, 31, 51, 0.40);
        }

        /* === 选中颜色 === */
        ::selection {
            background: var(--accent);
            color: #fff;
        }