/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a2a6c;
            --primary-light: #2d4a8e;
            --primary-dark: #0f1a47;
            --accent: #e8a838;
            --accent-light: #f0c060;
            --accent-dark: #c98820;
            --bg-white: #ffffff;
            --bg-light: #f5f7fc;
            --bg-dark: #0f1a47;
            --text-dark: #1a1a2e;
            --text-body: #3a3a4e;
            --text-muted: #7a7a8e;
            --text-white: #ffffff;
            --border: #e0e4f0;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(26,42,108,0.06);
            --shadow-md: 0 8px 28px rgba(26,42,108,0.10);
            --shadow-lg: 0 16px 48px rgba(26,42,108,0.14);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', system-ui, -apple-system, 'Helvetica Neue', Arial, sans-serif;
        }

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

        /* ===== Container ===== */
        .container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
        @media (max-width: 768px) { .container { padding: 0 16px; } }

        /* ===== 顶部信息条 ===== */
        .topbar {
            background: var(--bg-dark);
            color: var(--text-white);
            font-size: 0.85rem;
            padding: 8px 0;
            border-bottom: 1px solid rgba(255,255,255,0.06);
        }
        .topbar .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 6px 16px;
        }
        .topbar-left {
            display: flex;
            align-items: center;
            gap: 20px;
            flex-wrap: wrap;
        }
        .topbar-left span {
            opacity: 0.85;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .topbar-left i { color: var(--accent); font-size: 0.75rem; }
        .topbar-right {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .topbar-right a {
            color: var(--text-white);
            opacity: 0.85;
            font-size: 0.8rem;
            transition: var(--transition);
        }
        .topbar-right a:hover { opacity: 1; color: var(--accent); }
        .topbar-phone { color: var(--accent) !important; font-weight: 600; opacity: 1 !important; }

        /* ===== 主导航 ===== */
        .main-header {
            background: var(--bg-white);
            box-shadow: var(--shadow-sm);
            position: sticky;
            top: 0;
            z-index: 1050;
            transition: var(--transition);
        }
        .main-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 70px;
        }
        .site-logo {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.3px;
            display: flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
        }
        .site-logo i { color: var(--accent); font-size: 1.6rem; }
        .site-logo:hover { color: var(--primary); opacity: 0.92; }
        .site-logo small {
            font-size: 0.7rem;
            font-weight: 400;
            color: var(--text-muted);
            letter-spacing: 0.3px;
            margin-left: 4px;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 32px;
        }
        .main-nav a {
            color: var(--text-body);
            font-weight: 500;
            font-size: 0.95rem;
            position: relative;
            padding: 4px 0;
            transition: var(--transition);
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -2px;
            width: 0;
            height: 2.5px;
            background: var(--accent);
            border-radius: 2px;
            transition: var(--transition);
        }
        .main-nav a:hover { color: var(--primary); }
        .main-nav a:hover::after { width: 100%; }
        .main-nav a.active { color: var(--primary); font-weight: 600; }
        .main-nav a.active::after { width: 100%; background: var(--primary); }

        .nav-cta {
            background: var(--primary);
            color: var(--text-white) !important;
            padding: 8px 22px !important;
            border-radius: var(--radius-sm);
            font-weight: 600 !important;
            font-size: 0.9rem !important;
            transition: var(--transition);
        }
        .nav-cta::after { display: none !important; }
        .nav-cta:hover { background: var(--primary-light); transform: translateY(-1px); box-shadow: var(--shadow-sm); }

        /* 移动端汉堡 */
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 4px;
        }
        .hamburger span {
            width: 28px;
            height: 2.5px;
            background: var(--text-dark);
            border-radius: 2px;
            transition: var(--transition);
        }

        @media (max-width: 768px) {
            .hamburger { display: flex; }
            .main-nav {
                position: absolute;
                top: 70px;
                left: 0;
                right: 0;
                background: var(--bg-white);
                flex-direction: column;
                gap: 0;
                box-shadow: var(--shadow-md);
                max-height: 0;
                overflow: hidden;
                transition: max-height 0.4s ease;
                border-radius: 0 0 var(--radius-md) var(--radius-md);
            }
            .main-nav.open { max-height: 400px; padding: 16px 24px 24px; }
            .main-nav a {
                padding: 12px 0;
                width: 100%;
                border-bottom: 1px solid var(--border);
            }
            .main-nav a:last-child { border-bottom: none; }
            .main-nav a::after { display: none; }
            .main-nav a.active { color: var(--primary); background: transparent; }
            .nav-cta { text-align: center; margin-top: 8px; border-radius: var(--radius-sm) !important; }
            .topbar-left span:not(:first-child) { display: none; }
            .site-logo { font-size: 1.2rem; }
            .site-logo small { display: none; }
        }
        @media (max-width: 520px) {
            .topbar-left span i { display: none; }
            .topbar-right a:not(.topbar-phone) { display: none; }
        }

        /* ===== Hero 首屏 ===== */
        .hero {
            position: relative;
            min-height: 85vh;
            display: flex;
            align-items: center;
            background: url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
            padding: 80px 0;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15,26,71,0.88) 0%, rgba(26,42,108,0.78) 50%, rgba(0,0,0,0.45) 100%);
            z-index: 1;
        }
        .hero .container { position: relative; z-index: 2; }
        .hero-content { max-width: 720px; }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(232,168,56,0.18);
            color: var(--accent-light);
            font-size: 0.8rem;
            font-weight: 600;
            padding: 6px 18px;
            border-radius: 50px;
            border: 1px solid rgba(232,168,56,0.25);
            margin-bottom: 24px;
            backdrop-filter: blur(4px);
        }
        .hero h1 {
            font-size: 3.2rem;
            font-weight: 800;
            color: var(--text-white);
            line-height: 1.2;
            margin-bottom: 20px;
            letter-spacing: -0.5px;
        }
        .hero h1 span { color: var(--accent); }
        .hero p {
            font-size: 1.15rem;
            color: rgba(255,255,255,0.88);
            line-height: 1.8;
            margin-bottom: 32px;
            max-width: 640px;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
        }
        .hero-btn-primary {
            background: var(--accent);
            color: var(--text-dark);
            padding: 14px 36px;
            border-radius: var(--radius-sm);
            font-weight: 700;
            font-size: 1rem;
            border: none;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .hero-btn-primary:hover { background: var(--accent-light); color: var(--text-dark); transform: translateY(-2px); box-shadow: var(--shadow-md); }
        .hero-btn-outline {
            background: transparent;
            color: var(--text-white);
            padding: 14px 32px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 1rem;
            border: 2px solid rgba(255,255,255,0.35);
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .hero-btn-outline:hover { border-color: var(--accent); color: var(--accent); background: rgba(232,168,56,0.10); }
        .hero-stats {
            display: flex;
            gap: 40px;
            margin-top: 48px;
            flex-wrap: wrap;
        }
        .hero-stat { text-align: left; }
        .hero-stat-number {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text-white);
            line-height: 1.2;
        }
        .hero-stat-number span { color: var(--accent); }
        .hero-stat-label {
            font-size: 0.85rem;
            color: rgba(255,255,255,0.7);
            margin-top: 2px;
        }

        @media (max-width: 768px) {
            .hero { min-height: 70vh; padding: 60px 0; }
            .hero h1 { font-size: 2rem; }
            .hero p { font-size: 1rem; }
            .hero-stats { gap: 24px; }
            .hero-stat-number { font-size: 1.5rem; }
        }
        @media (max-width: 520px) {
            .hero h1 { font-size: 1.6rem; }
            .hero-actions { flex-direction: column; align-items: stretch; }
            .hero-btn-primary, .hero-btn-outline { justify-content: center; }
        }

        /* ===== 板块通用 ===== */
        .section { padding: 80px 0; }
        .section-alt { background: var(--bg-light); }
        .section-dark { background: var(--bg-dark); }
        .section-title {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--text-dark);
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }
        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 600px;
            margin-bottom: 40px;
        }
        .section-title-light { color: var(--text-white); }
        .section-subtitle-light { color: rgba(255,255,255,0.75); }
        .text-center .section-subtitle { margin-left: auto; margin-right: auto; }

        @media (max-width: 768px) {
            .section { padding: 48px 0; }
            .section-title { font-size: 1.6rem; }
            .section-subtitle { font-size: 0.95rem; }
        }

        /* ===== 卡片系统 ===== */
        .card-custom {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            transition: var(--transition);
            height: 100%;
        }
        .card-custom:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
            border-color: transparent;
        }
        .card-icon {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-sm);
            background: var(--bg-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: var(--primary);
            margin-bottom: 16px;
            transition: var(--transition);
        }
        .card-custom:hover .card-icon { background: var(--primary); color: var(--text-white); }
        .card-custom h3 { font-size: 1.15rem; font-weight: 700; margin-bottom: 8px; }
        .card-custom p { font-size: 0.92rem; color: var(--text-muted); line-height: 1.7; }

        /* ===== 特色卡片带图 ===== */
        .feature-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid var(--border);
            height: 100%;
        }
        .feature-card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }
        .feature-card img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            transition: var(--transition);
        }
        .feature-card:hover img { transform: scale(1.02); }
        .feature-card-body { padding: 20px 22px 24px; }
        .feature-card-body h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: 6px; }
        .feature-card-body p { font-size: 0.9rem; color: var(--text-muted); line-height: 1.7; }
        .feature-card-tag {
            display: inline-block;
            background: var(--bg-light);
            color: var(--primary);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 2px 12px;
            border-radius: 50px;
            margin-bottom: 10px;
        }

        /* ===== 流程步骤 ===== */
        .step-item {
            display: flex;
            gap: 20px;
            padding: 20px 0;
            border-bottom: 1px solid var(--border);
            align-items: flex-start;
        }
        .step-item:last-child { border-bottom: none; }
        .step-num {
            flex-shrink: 0;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--primary);
            color: var(--text-white);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.1rem;
        }
        .step-content h4 { font-size: 1.05rem; font-weight: 700; margin-bottom: 4px; }
        .step-content p { font-size: 0.9rem; color: var(--text-muted); }

        /* ===== CMS 资讯列表 ===== */
        .post-list { display: flex; flex-direction: column; gap: 16px; }
        .post-item {
            display: flex;
            align-items: flex-start;
            gap: 16px;
            padding: 18px 20px;
            background: var(--bg-white);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            transition: var(--transition);
        }
        .post-item:hover { box-shadow: var(--shadow-sm); border-color: var(--primary-light); }
        .post-cat {
            flex-shrink: 0;
            background: var(--bg-light);
            color: var(--primary);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 2px 12px;
            border-radius: 50px;
            margin-top: 2px;
        }
        .post-info { flex: 1; min-width: 0; }
        .post-info h4 { font-size: 1rem; font-weight: 600; margin-bottom: 4px; }
        .post-info h4 a { color: var(--text-dark); }
        .post-info h4 a:hover { color: var(--primary); }
        .post-meta {
            font-size: 0.82rem;
            color: var(--text-muted);
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }
        .post-meta i { margin-right: 3px; font-size: 0.75rem; }
        .post-empty {
            text-align: center;
            padding: 40px 20px;
            color: var(--text-muted);
            background: var(--bg-white);
            border-radius: var(--radius-md);
            border: 1px dashed var(--border);
        }

        /* ===== 数据统计 ===== */
        .stat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
        .stat-box {
            text-align: center;
            padding: 28px 16px;
            background: rgba(255,255,255,0.06);
            border-radius: var(--radius-md);
            border: 1px solid rgba(255,255,255,0.08);
            transition: var(--transition);
        }
        .stat-box:hover { background: rgba(255,255,255,0.10); transform: translateY(-2px); }
        .stat-box .number { font-size: 2.4rem; font-weight: 800; color: var(--accent); line-height: 1.2; }
        .stat-box .label { font-size: 0.9rem; color: rgba(255,255,255,0.75); margin-top: 6px; }
        @media (max-width: 768px) { .stat-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; } }
        @media (max-width: 520px) { .stat-grid { grid-template-columns: 1fr 1fr; } .stat-box .number { font-size: 1.6rem; } }

        /* ===== FAQ ===== */
        .faq-list { max-width: 800px; margin: 0 auto; }
        .faq-item {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            margin-bottom: 12px;
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover { border-color: var(--primary-light); }
        .faq-question {
            padding: 18px 22px;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-dark);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            background: transparent;
            border: none;
            width: 100%;
            text-align: left;
            transition: var(--transition);
        }
        .faq-question i { color: var(--primary); transition: var(--transition); font-size: 0.85rem; }
        .faq-question[aria-expanded="true"] i { transform: rotate(180deg); }
        .faq-answer {
            padding: 0 22px 18px;
            font-size: 0.92rem;
            color: var(--text-muted);
            line-height: 1.8;
        }

        /* ===== CTA 板块 ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            padding: 80px 0;
            text-align: center;
        }
        .cta-section h2 {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 16px;
        }
        .cta-section p {
            font-size: 1.05rem;
            color: rgba(255,255,255,0.8);
            max-width: 600px;
            margin: 0 auto 32px;
        }
        .cta-btn {
            background: var(--accent);
            color: var(--text-dark);
            padding: 16px 48px;
            border-radius: var(--radius-sm);
            font-weight: 700;
            font-size: 1.05rem;
            border: none;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .cta-btn:hover { background: var(--accent-light); color: var(--text-dark); transform: translateY(-2px); box-shadow: 0 12px 32px rgba(232,168,56,0.30); }

        @media (max-width: 768px) {
            .cta-section { padding: 48px 0; }
            .cta-section h2 { font-size: 1.6rem; }
        }

        /* ===== 页脚 ===== */
        .footer {
            background: var(--bg-dark);
            color: rgba(255,255,255,0.7);
            padding: 56px 0 32px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .site-logo { color: var(--text-white); margin-bottom: 12px; }
        .footer-brand p { font-size: 0.9rem; line-height: 1.8; max-width: 360px; }
        .footer h4 { color: var(--text-white); font-size: 1rem; font-weight: 700; margin-bottom: 16px; }
        .footer ul li { margin-bottom: 8px; }
        .footer ul li a { color: rgba(255,255,255,0.65); font-size: 0.9rem; transition: var(--transition); }
        .footer ul li a:hover { color: var(--accent); padding-left: 4px; }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.08);
            padding-top: 24px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 12px;
            font-size: 0.85rem;
        }
        .footer-bottom a { color: rgba(255,255,255,0.6); }
        .footer-bottom a:hover { color: var(--accent); }

        @media (max-width: 768px) {
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
        }
        @media (max-width: 520px) {
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .footer-bottom { flex-direction: column; text-align: center; }
        }

        /* ===== 响应式辅助 ===== */
        @media (max-width: 576px) {
            .row-cols-2 > * { width: 100%; }
        }

        /* ===== 按钮通用 ===== */
        .btn-custom {
            padding: 10px 28px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.95rem;
            border: none;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-custom-primary { background: var(--primary); color: var(--text-white); }
        .btn-custom-primary:hover { background: var(--primary-light); color: var(--text-white); transform: translateY(-1px); box-shadow: var(--shadow-sm); }
        .btn-custom-accent { background: var(--accent); color: var(--text-dark); }
        .btn-custom-accent:hover { background: var(--accent-light); color: var(--text-dark); transform: translateY(-1px); }

        /* ===== 分隔线 ===== */
        .divider { width: 48px; height: 3px; background: var(--accent); border-radius: 2px; margin: 12px 0 24px; }
        .divider-center { margin-left: auto; margin-right: auto; }

        /* ===== 标签徽章 ===== */
        .badge-custom {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 600;
        }
        .badge-accent { background: rgba(232,168,56,0.15); color: var(--accent-dark); }
        .badge-primary { background: var(--bg-light); color: var(--primary); }

/* roulang page: article */
:root {
            --primary: #1a2a6c;
            --primary-light: #2d4a9e;
            --primary-dark: #0f1a44;
            --secondary: #e8b84b;
            --secondary-light: #f0cc6e;
            --secondary-dark: #c99a2e;
            --accent: #e74c3c;
            --bg-light: #f8f9fc;
            --bg-white: #ffffff;
            --text-dark: #1a202c;
            --text-body: #2d3748;
            --text-muted: #6b7a8f;
            --text-light: #a0aec0;
            --text-white: #f7fafc;
            --border: #e2e8f0;
            --border-light: #edf2f7;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
            --shadow-md: 0 4px 20px rgba(0,0,0,0.08);
            --shadow-lg: 0 10px 40px rgba(0,0,0,0.12);
            --shadow-xl: 0 20px 60px rgba(0,0,0,0.15);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
            --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
        }
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body {
            font-family: var(--font-sans);
            color: var(--text-body);
            background: var(--bg-light);
            line-height: 1.7;
            overflow-x: hidden;
        }
        a { color: var(--primary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary-light); }
        img { max-width: 100%; height: auto; display: block; }
        .container { max-width: 1200px; 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: 1050;
            background: rgba(255,255,255,0.97);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .site-header.scrolled { box-shadow: var(--shadow-md); }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }
        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: -0.3px;
        }
        .site-logo i { color: var(--secondary); font-size: 1.5rem; }
        .site-logo:hover { color: var(--primary); opacity: 0.9; }
        .main-nav { display: flex; align-items: center; gap: 8px; }
        .main-nav a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-body);
            transition: var(--transition);
            position: relative;
        }
        .main-nav a:hover { color: var(--primary); background: rgba(26,42,108,0.06); }
        .main-nav a.active {
            color: var(--primary);
            background: rgba(26,42,108,0.08);
            font-weight: 600;
        }
        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: 2px; left: 50%;
            transform: translateX(-50%);
            width: 20px; height: 3px;
            background: var(--secondary);
            border-radius: 4px;
        }
        .main-nav .nav-cta {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            color: var(--text-white) !important;
            padding: 10px 24px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            box-shadow: 0 4px 14px rgba(26,42,108,0.25);
            margin-left: 8px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .main-nav .nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(26,42,108,0.35);
            background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary) 100%);
            color: var(--text-white) !important;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.6rem;
            color: var(--primary);
            cursor: pointer;
            padding: 4px 8px;
            border-radius: var(--radius-sm);
        }
        .nav-toggle:hover { background: rgba(26,42,108,0.06); }
        @media (max-width: 768px) {
            .nav-toggle { display: block; }
            .main-nav {
                position: fixed;
                top: 72px; left: 0; right: 0;
                background: var(--bg-white);
                flex-direction: column;
                padding: 16px 24px 24px;
                gap: 4px;
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow-lg);
                transform: translateY(-110%);
                opacity: 0;
                pointer-events: none;
                transition: var(--transition);
                border-radius: 0 0 var(--radius-md) var(--radius-md);
            }
            .main-nav.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .main-nav a { width: 100%; padding: 12px 16px; font-size: 1rem; }
            .main-nav .nav-cta { margin-left: 0; margin-top: 8px; justify-content: center; }
            .header-inner { height: 64px; }
        }

        /* ===== Hero / Article Banner ===== */
        .article-hero {
            margin-top: 72px;
            position: relative;
            min-height: 380px;
            display: flex;
            align-items: center;
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 60%, var(--primary-light) 100%);
            overflow: hidden;
        }
        .article-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            opacity: 0.2;
            mix-blend-mode: overlay;
        }
        .article-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(26,42,108,0.85) 0%, rgba(26,42,108,0.5) 100%);
        }
        .article-hero .container { position: relative; z-index: 2; padding-top: 60px; padding-bottom: 60px; }
        .article-hero .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            list-style: none;
            padding: 0;
            margin-bottom: 20px;
            font-size: 0.9rem;
        }
        .article-hero .breadcrumb li { color: rgba(255,255,255,0.6); }
        .article-hero .breadcrumb li + li::before { content: '/'; margin-right: 8px; color: rgba(255,255,255,0.4); }
        .article-hero .breadcrumb a { color: rgba(255,255,255,0.8); }
        .article-hero .breadcrumb a:hover { color: var(--secondary); }
        .article-hero .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 16px 24px;
            margin-bottom: 16px;
            font-size: 0.9rem;
            color: rgba(255,255,255,0.75);
        }
        .article-hero .article-meta i { margin-right: 6px; color: var(--secondary); }
        .article-hero .article-meta .category-badge {
            display: inline-block;
            background: var(--secondary);
            color: var(--primary-dark);
            padding: 4px 16px;
            border-radius: 20px;
            font-weight: 600;
            font-size: 0.8rem;
            letter-spacing: 0.3px;
            text-transform: uppercase;
        }
        .article-hero h1 {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--text-white);
            line-height: 1.25;
            max-width: 860px;
            margin-bottom: 12px;
            letter-spacing: -0.5px;
        }
        .article-hero .lead {
            font-size: 1.1rem;
            color: rgba(255,255,255,0.8);
            max-width: 680px;
            line-height: 1.6;
        }
        @media (max-width: 768px) {
            .article-hero { min-height: 300px; margin-top: 64px; }
            .article-hero .container { padding-top: 40px; padding-bottom: 40px; }
            .article-hero h1 { font-size: 1.8rem; }
            .article-hero .lead { font-size: 0.95rem; }
            .article-hero .article-meta { gap: 10px 16px; font-size: 0.8rem; }
        }
        @media (max-width: 520px) {
            .article-hero h1 { font-size: 1.5rem; }
            .article-hero { min-height: 240px; }
        }

        /* ===== Article Content ===== */
        .article-section { padding: 60px 0; }
        .article-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 48px;
        }
        .article-body {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 40px 48px;
            border: 1px solid var(--border-light);
            min-height: 400px;
        }
        .article-body .content-not-found {
            text-align: center;
            padding: 60px 20px;
        }
        .article-body .content-not-found i { font-size: 3.5rem; color: var(--text-light); margin-bottom: 20px; }
        .article-body .content-not-found h3 { font-size: 1.6rem; color: var(--text-dark); margin-bottom: 12px; }
        .article-body .content-not-found p { color: var(--text-muted); margin-bottom: 24px; }
        .article-body .content-not-found a.btn-primary {
            display: inline-block;
            padding: 12px 32px;
            background: var(--primary);
            color: var(--text-white);
            border-radius: var(--radius-sm);
            font-weight: 600;
        }
        .article-body .content-not-found a.btn-primary:hover { background: var(--primary-light); transform: translateY(-2px); box-shadow: var(--shadow-md); }

        .article-body .cms-content { font-size: 1.05rem; line-height: 1.9; color: var(--text-body); }
        .article-body .cms-content h2, 
        .article-body .cms-content h3, 
        .article-body .cms-content h4 { color: var(--text-dark); margin-top: 32px; margin-bottom: 16px; font-weight: 700; }
        .article-body .cms-content h2 { font-size: 1.7rem; }
        .article-body .cms-content h3 { font-size: 1.35rem; }
        .article-body .cms-content p { margin-bottom: 20px; }
        .article-body .cms-content ul, 
        .article-body .cms-content ol { margin-bottom: 20px; padding-left: 24px; }
        .article-body .cms-content li { margin-bottom: 8px; }
        .article-body .cms-content img { border-radius: var(--radius-sm); margin: 24px 0; box-shadow: var(--shadow-sm); }
        .article-body .cms-content a { color: var(--primary); text-decoration: underline; text-underline-offset: 2px; }
        .article-body .cms-content blockquote {
            border-left: 4px solid var(--secondary);
            background: var(--bg-light);
            padding: 16px 24px;
            margin: 24px 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-muted);
            font-style: italic;
        }
        .article-body .cms-content code {
            background: var(--bg-light);
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 0.9em;
            color: var(--accent);
        }
        .article-body .cms-content pre {
            background: var(--primary-dark);
            color: #e2e8f0;
            padding: 24px;
            border-radius: var(--radius-sm);
            overflow-x: auto;
            margin: 24px 0;
            font-size: 0.9rem;
        }

        /* Sidebar */
        .article-sidebar { display: flex; flex-direction: column; gap: 32px; }
        .sidebar-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            padding: 28px;
        }
        .sidebar-card h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 16px;
            padding-bottom: 12px;
            border-bottom: 2px solid var(--secondary);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar-card h4 i { color: var(--secondary); }
        .sidebar-card ul { list-style: none; padding: 0; margin: 0; }
        .sidebar-card ul li { padding: 10px 0; border-bottom: 1px solid var(--border-light); }
        .sidebar-card ul li:last-child { border-bottom: none; }
        .sidebar-card ul li a {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text-body);
            font-size: 0.95rem;
            transition: var(--transition);
        }
        .sidebar-card ul li a:hover { color: var(--primary); padding-left: 4px; }
        .sidebar-card ul li a i { color: var(--text-light); font-size: 0.8rem; width: 16px; }
        .sidebar-cta {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            color: var(--text-white);
            text-align: center;
            padding: 32px 24px;
            border-radius: var(--radius-md);
        }
        .sidebar-cta h4 { color: var(--text-white); border-bottom-color: rgba(255,255,255,0.3); }
        .sidebar-cta p { color: rgba(255,255,255,0.8); font-size: 0.95rem; margin-bottom: 20px; }
        .sidebar-cta .btn-gold {
            display: inline-block;
            background: var(--secondary);
            color: var(--primary-dark);
            padding: 12px 32px;
            border-radius: var(--radius-sm);
            font-weight: 700;
            font-size: 1rem;
            transition: var(--transition);
            box-shadow: 0 4px 16px rgba(232,184,75,0.4);
        }
        .sidebar-cta .btn-gold:hover { transform: translateY(-3px); box-shadow: 0 8px 28px rgba(232,184,75,0.5); background: var(--secondary-light); color: var(--primary-dark); }

        @media (max-width: 992px) {
            .article-layout { grid-template-columns: 1fr; gap: 32px; }
            .article-body { padding: 28px 24px; }
        }
        @media (max-width: 520px) {
            .article-body { padding: 20px 16px; }
            .article-body .cms-content { font-size: 0.95rem; }
            .sidebar-card { padding: 20px; }
        }

        /* ===== Article Footer / Share ===== */
        .article-footer-bar {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            padding: 24px 0 8px;
            margin-top: 32px;
            border-top: 1px solid var(--border-light);
            gap: 16px;
        }
        .article-footer-bar .tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .article-footer-bar .tags span {
            display: inline-block;
            background: var(--bg-light);
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 0.8rem;
            color: var(--text-muted);
            border: 1px solid var(--border);
        }
        .article-footer-bar .share-buttons {
            display: flex;
            gap: 10px;
            align-items: center;
        }
        .article-footer-bar .share-buttons span { font-size: 0.9rem; color: var(--text-muted); }
        .article-footer-bar .share-buttons a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: var(--bg-light);
            color: var(--text-muted);
            border: 1px solid var(--border);
            transition: var(--transition);
        }
        .article-footer-bar .share-buttons a:hover { background: var(--primary); color: var(--text-white); border-color: var(--primary); transform: translateY(-2px); }

        /* ===== Related Articles ===== */
        .related-section {
            background: var(--bg-white);
            padding: 60px 0;
            border-top: 1px solid var(--border-light);
        }
        .related-section .section-title {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--text-dark);
            margin-bottom: 8px;
            text-align: center;
        }
        .related-section .section-sub {
            text-align: center;
            color: var(--text-muted);
            margin-bottom: 40px;
            font-size: 1rem;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .related-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-light);
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .related-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: transparent; }
        .related-card .card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            display: block;
        }
        .related-card .card-body { padding: 20px 22px 24px; }
        .related-card .card-body .card-tag {
            display: inline-block;
            background: rgba(232,184,75,0.15);
            color: var(--secondary-dark);
            padding: 2px 12px;
            border-radius: 12px;
            font-size: 0.75rem;
            font-weight: 600;
            margin-bottom: 10px;
        }
        .related-card .card-body h5 { font-size: 1.1rem; font-weight: 700; color: var(--text-dark); margin-bottom: 8px; line-height: 1.4; }
        .related-card .card-body p { font-size: 0.9rem; color: var(--text-muted); line-height: 1.6; margin-bottom: 12px; }
        .related-card .card-body .card-meta { font-size: 0.8rem; color: var(--text-light); display: flex; gap: 16px; }
        .related-card .card-body .card-meta i { margin-right: 4px; }
        @media (max-width: 992px) {
            .related-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 576px) {
            .related-grid { grid-template-columns: 1fr; }
            .related-card .card-img { height: 180px; }
        }

        /* ===== FAQ ===== */
        .faq-section {
            padding: 60px 0;
            background: var(--bg-light);
        }
        .faq-section .section-title {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--text-dark);
            text-align: center;
            margin-bottom: 8px;
        }
        .faq-section .section-sub {
            text-align: center;
            color: var(--text-muted);
            margin-bottom: 40px;
            font-size: 1rem;
        }
        .faq-list { max-width: 800px; margin: 0 auto; }
        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius-sm);
            margin-bottom: 12px;
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover { border-color: var(--border); box-shadow: var(--shadow-sm); }
        .faq-item .faq-question {
            padding: 18px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            font-weight: 600;
            color: var(--text-dark);
            font-size: 1rem;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            transition: var(--transition);
            gap: 16px;
        }
        .faq-item .faq-question:hover { color: var(--primary); }
        .faq-item .faq-question i { color: var(--secondary); transition: var(--transition); font-size: 1.1rem; flex-shrink: 0; }
        .faq-item .faq-question[aria-expanded="true"] i { transform: rotate(180deg); }
        .faq-item .faq-answer {
            padding: 0 24px 18px;
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.7;
            display: none;
        }
        .faq-item .faq-answer.open { display: block; }
        @media (max-width: 520px) {
            .faq-item .faq-question { padding: 14px 16px; font-size: 0.95rem; }
            .faq-item .faq-answer { padding: 0 16px 14px; font-size: 0.9rem; }
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 80px 0;
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%);
            position: relative;
            overflow: hidden;
            text-align: center;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center/cover no-repeat;
            opacity: 0.08;
            mix-blend-mode: overlay;
        }
        .cta-section .container { position: relative; z-index: 2; }
        .cta-section h2 {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 16px;
            letter-spacing: -0.3px;
        }
        .cta-section p {
            font-size: 1.1rem;
            color: rgba(255,255,255,0.8);
            max-width: 600px;
            margin: 0 auto 32px;
            line-height: 1.6;
        }
        .cta-section .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: var(--secondary);
            color: var(--primary-dark);
            padding: 16px 48px;
            border-radius: var(--radius-sm);
            font-weight: 700;
            font-size: 1.1rem;
            transition: var(--transition);
            box-shadow: 0 8px 28px rgba(232,184,75,0.35);
        }
        .cta-section .btn-cta:hover { transform: translateY(-4px); box-shadow: 0 12px 40px rgba(232,184,75,0.5); background: var(--secondary-light); color: var(--primary-dark); }
        @media (max-width: 768px) {
            .cta-section { padding: 60px 0; }
            .cta-section h2 { font-size: 1.6rem; }
            .cta-section p { font-size: 0.95rem; }
            .cta-section .btn-cta { padding: 14px 32px; font-size: 1rem; }
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--primary-dark);
            color: rgba(255,255,255,0.7);
            padding: 60px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255,255,255,0.08);
        }
        .footer .site-logo { color: var(--text-white); font-size: 1.3rem; margin-bottom: 12px; display: inline-flex; }
        .footer-brand p { font-size: 0.9rem; line-height: 1.7; color: rgba(255,255,255,0.6); margin-top: 12px; }
        .footer h4 {
            color: var(--text-white);
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 18px;
            letter-spacing: 0.3px;
        }
        .footer ul { list-style: none; padding: 0; margin: 0; }
        .footer ul li { margin-bottom: 10px; }
        .footer ul li a { color: rgba(255,255,255,0.55); font-size: 0.9rem; transition: var(--transition); }
        .footer ul li a:hover { color: var(--secondary); padding-left: 4px; }
        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            padding: 24px 0;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.4);
            gap: 12px;
        }
        .footer-bottom a { color: rgba(255,255,255,0.5); }
        .footer-bottom a:hover { color: var(--secondary); }
        @media (max-width: 992px) {
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
        }
        @media (max-width: 576px) {
            .footer-grid { grid-template-columns: 1fr; gap: 28px; }
            .footer-bottom { flex-direction: column; text-align: center; }
        }

        /* ===== Back to Top ===== */
        .back-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary);
            color: var(--text-white);
            border: none;
            font-size: 1.2rem;
            cursor: pointer;
            box-shadow: var(--shadow-md);
            transition: var(--transition);
            opacity: 0;
            transform: translateY(20px);
            pointer-events: none;
            z-index: 999;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .back-top.visible { opacity: 1; transform: translateY(0); pointer-events: auto; }
        .back-top:hover { background: var(--primary-light); transform: translateY(-4px); box-shadow: var(--shadow-lg); }

        /* ===== Bootstrap Overrides ===== */
        .accordion-button:not(.collapsed) { background: rgba(26,42,108,0.05); color: var(--primary); box-shadow: none; }
        .accordion-button:focus { box-shadow: none; border-color: var(--border); }
        .accordion-item { border-color: var(--border-light); border-radius: var(--radius-sm) !important; overflow: hidden; margin-bottom: 8px; }
        .accordion-header { margin: 0; }

/* roulang page: category1 */
:root {
            --primary: #1a2a4a;
            --primary-light: #2c3e6b;
            --primary-dark: #0f1a30;
            --accent: #e8a530;
            --accent-hover: #d4942a;
            --accent-light: #fef3e0;
            --bg-light: #f5f7fa;
            --bg-white: #ffffff;
            --text-dark: #1a1a2e;
            --text-body: #3d4a5c;
            --text-muted: #7a8599;
            --text-white: #f0f2f5;
            --border-color: #e2e6ee;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(26,42,74,0.06);
            --shadow-md: 0 6px 24px rgba(26,42,74,0.10);
            --shadow-lg: 0 16px 48px rgba(26,42,74,0.12);
            --transition: all 0.25s ease;
            --font-sans: 'Segoe UI', system-ui, -apple-system, 'Helvetica Neue', Arial, sans-serif;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-sans);
            color: var(--text-body);
            background: var(--bg-white);
            line-height: 1.7;
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            max-width: 1200px;
            padding-left: 20px;
            padding-right: 20px;
            margin-left: auto;
            margin-right: auto;
        }
        .container-lg {
            max-width: 1100px;
        }

        /* ===== 顶部信息条 ===== */
        .top-bar {
            background: var(--primary-dark);
            color: var(--text-muted);
            font-size: 0.8rem;
            padding: 6px 0;
            border-bottom: 1px solid rgba(255,255,255,0.05);
        }
        .top-bar .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
        }
        .top-bar span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--text-white);
            opacity: 0.85;
        }
        .top-bar i {
            color: var(--accent);
        }

        /* ===== 站点头部 ===== */
        .site-header {
            background: var(--bg-white);
            box-shadow: 0 2px 12px rgba(26,42,74,0.05);
            position: sticky;
            top: 0;
            z-index: 1050;
            border-bottom: 1px solid var(--border-color);
        }
        .header-main {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 10px;
            padding-bottom: 10px;
            gap: 20px;
        }
        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--primary);
            white-space: nowrap;
        }
        .site-logo i {
            color: var(--accent);
            font-size: 1.6rem;
        }
        .site-logo:hover {
            color: var(--primary);
        }

        /* ===== 主导航 ===== */
        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
        }
        .main-nav a {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-body);
            transition: var(--transition);
            position: relative;
            white-space: nowrap;
        }
        .main-nav a:hover {
            color: var(--primary);
            background: var(--bg-light);
        }
        .main-nav a.active {
            color: var(--primary);
            background: var(--accent-light);
            font-weight: 600;
        }
        .main-nav a.active::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 50%;
            transform: translateX(-50%);
            width: 60%;
            height: 3px;
            background: var(--accent);
            border-radius: 3px;
        }
        .main-nav .nav-cta {
            background: var(--accent);
            color: var(--primary-dark);
            font-weight: 600;
            padding: 8px 20px;
            border-radius: var(--radius-sm);
            gap: 8px;
            margin-left: 8px;
        }
        .main-nav .nav-cta:hover {
            background: var(--accent-hover);
            color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 4px 14px rgba(232,165,48,0.35);
        }
        .main-nav .nav-cta i {
            font-size: 0.9rem;
        }
        .menu-toggle {
            display: none;
            background: none;
            border: 2px solid var(--border-color);
            border-radius: var(--radius-sm);
            font-size: 1.4rem;
            padding: 6px 12px;
            color: var(--primary);
            cursor: pointer;
            transition: var(--transition);
        }
        .menu-toggle:hover {
            border-color: var(--primary);
            background: var(--bg-light);
        }

        /* ===== Hero 区域 ===== */
        .hero {
            position: relative;
            background: var(--primary-dark);
            min-height: 480px;
            display: flex;
            align-items: center;
            overflow: hidden;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
            opacity: 0.22;
            z-index: 0;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15,26,48,0.88) 0%, rgba(26,42,74,0.72) 100%);
            z-index: 1;
        }
        .hero .container {
            position: relative;
            z-index: 2;
            text-align: center;
            padding: 80px 20px 70px;
            width: 100%;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(232,165,48,0.18);
            color: var(--accent);
            font-size: 0.85rem;
            font-weight: 600;
            padding: 6px 18px;
            border-radius: 50px;
            border: 1px solid rgba(232,165,48,0.25);
            letter-spacing: 0.5px;
            margin-bottom: 24px;
        }
        .hero h1 {
            font-size: 3rem;
            font-weight: 800;
            color: var(--text-white);
            line-height: 1.2;
            margin-bottom: 18px;
            letter-spacing: -0.5px;
        }
        .hero h1 span {
            color: var(--accent);
        }
        .hero-sub {
            font-size: 1.15rem;
            color: rgba(240,242,245,0.8);
            max-width: 680px;
            margin: 0 auto 32px;
            line-height: 1.7;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            justify-content: center;
        }
        .btn-accent {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: var(--accent);
            color: var(--primary-dark);
            font-weight: 700;
            font-size: 1rem;
            padding: 14px 34px;
            border-radius: var(--radius-sm);
            border: none;
            transition: var(--transition);
            cursor: pointer;
        }
        .btn-accent:hover {
            background: var(--accent-hover);
            color: var(--primary-dark);
            transform: translateY(-3px);
            box-shadow: 0 8px 28px rgba(232,165,48,0.35);
        }
        .btn-outline-light {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: transparent;
            color: var(--text-white);
            font-weight: 600;
            font-size: 1rem;
            padding: 13px 32px;
            border-radius: var(--radius-sm);
            border: 2px solid rgba(255,255,255,0.35);
            transition: var(--transition);
            cursor: pointer;
        }
        .btn-outline-light:hover {
            background: rgba(255,255,255,0.10);
            border-color: var(--accent);
            color: var(--accent);
            transform: translateY(-3px);
        }
        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 40px;
            justify-content: center;
            margin-top: 48px;
            padding-top: 36px;
            border-top: 1px solid rgba(255,255,255,0.10);
        }
        .hero-stat-item {
            text-align: center;
        }
        .hero-stat-item .num {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--accent);
            display: block;
            line-height: 1.2;
        }
        .hero-stat-item .label {
            font-size: 0.85rem;
            color: rgba(240,242,245,0.65);
            margin-top: 2px;
        }

        /* ===== 板块通用 ===== */
        .section {
            padding: 80px 0;
        }
        .section-alt {
            background: var(--bg-light);
        }
        .section-dark {
            background: var(--primary);
            color: var(--text-white);
        }
        .section-title {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }
        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 600px;
            margin: 0 auto 48px;
            text-align: center;
        }
        .section-dark .section-title {
            color: var(--text-white);
        }
        .section-dark .section-subtitle {
            color: rgba(240,242,245,0.7);
        }

        /* ===== 卡片通用 ===== */
        .card-custom {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
            overflow: hidden;
            height: 100%;
        }
        .card-custom:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }
        .card-custom .card-body {
            padding: 28px 24px;
        }
        .card-custom .card-icon {
            width: 54px;
            height: 54px;
            border-radius: var(--radius-sm);
            background: var(--accent-light);
            color: var(--accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            margin-bottom: 18px;
        }
        .card-custom h5 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 10px;
        }
        .card-custom p {
            font-size: 0.95rem;
            color: var(--text-body);
            margin-bottom: 0;
            line-height: 1.7;
        }
        .card-custom .card-img-top {
            width: 100%;
            height: 200px;
            object-fit: cover;
        }

        /* ===== 优势板块 ===== */
        .advantages-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        /* ===== 流程步骤 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: step;
        }
        .step-item {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 32px 22px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
            position: relative;
        }
        .step-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }
        .step-item::before {
            counter-increment: step;
            content: counter(step);
            display: block;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--accent);
            color: var(--primary-dark);
            font-weight: 800;
            font-size: 1.2rem;
            line-height: 44px;
            margin: 0 auto 16px;
        }
        .step-item h5 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 8px;
        }
        .step-item p {
            font-size: 0.9rem;
            color: var(--text-body);
            margin-bottom: 0;
            line-height: 1.6;
        }
        .step-connector {
            display: none;
        }

        /* ===== 场景板块 ===== */
        .scenes-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .scene-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
            height: 100%;
        }
        .scene-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }
        .scene-card img {
            width: 100%;
            height: 180px;
            object-fit: cover;
        }
        .scene-card .scene-body {
            padding: 22px 20px 26px;
        }
        .scene-card .scene-body h5 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 8px;
        }
        .scene-card .scene-body p {
            font-size: 0.92rem;
            color: var(--text-body);
            margin-bottom: 0;
            line-height: 1.7;
        }
        .scene-card .scene-tag {
            display: inline-block;
            background: var(--accent-light);
            color: var(--accent);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 50px;
            margin-bottom: 12px;
        }

        /* ===== 安全认证 ===== */
        .security-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .security-item {
            background: rgba(255,255,255,0.06);
            border: 1px solid rgba(255,255,255,0.12);
            border-radius: var(--radius-md);
            padding: 28px 18px;
            text-align: center;
            transition: var(--transition);
        }
        .security-item:hover {
            background: rgba(255,255,255,0.10);
            border-color: var(--accent);
            transform: translateY(-3px);
        }
        .security-item i {
            font-size: 2.4rem;
            color: var(--accent);
            margin-bottom: 14px;
        }
        .security-item h6 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 6px;
        }
        .security-item p {
            font-size: 0.82rem;
            color: rgba(240,242,245,0.6);
            margin-bottom: 0;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 820px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            margin-bottom: 14px;
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--accent);
        }
        .faq-question {
            padding: 18px 24px;
            font-weight: 600;
            font-size: 1rem;
            color: var(--primary);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            transition: var(--transition);
        }
        .faq-question:hover {
            background: var(--bg-light);
        }
        .faq-question i {
            transition: var(--transition);
            color: var(--accent);
            font-size: 0.9rem;
        }
        .faq-question[aria-expanded="true"] i {
            transform: rotate(180deg);
        }
        .faq-answer {
            padding: 0 24px 18px;
            font-size: 0.95rem;
            color: var(--text-body);
            line-height: 1.8;
        }

        /* ===== CTA板块 ===== */
        .cta-section {
            background: var(--primary);
            padding: 72px 0;
            text-align: center;
        }
        .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(240,242,245,0.75);
            max-width: 600px;
            margin: 0 auto 32px;
        }
        .cta-section .btn-accent {
            font-size: 1.1rem;
            padding: 16px 44px;
        }

        /* ===== 页脚 ===== */
        .footer {
            background: var(--primary-dark);
            color: rgba(240,242,245,0.7);
            padding: 56px 0 0;
            border-top: 1px solid rgba(255,255,255,0.05);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 36px;
            border-bottom: 1px solid rgba(255,255,255,0.06);
        }
        .footer-brand .site-logo {
            color: var(--text-white);
            font-size: 1.3rem;
            margin-bottom: 12px;
        }
        .footer-brand p {
            font-size: 0.88rem;
            line-height: 1.7;
            color: rgba(240,242,245,0.6);
        }
        .footer h4 {
            color: var(--text-white);
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 18px;
        }
        .footer ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer ul li {
            margin-bottom: 10px;
        }
        .footer ul li a {
            color: rgba(240,242,245,0.55);
            font-size: 0.88rem;
            transition: var(--transition);
        }
        .footer ul li a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            padding: 20px 0;
            font-size: 0.82rem;
            color: rgba(240,242,245,0.45);
        }
        .footer-bottom a {
            color: rgba(240,242,245,0.55);
        }
        .footer-bottom a:hover {
            color: var(--accent);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 992px) {
            .advantages-grid,
            .scenes-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .security-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .hero h1 {
                font-size: 2.4rem;
            }
            .section-title {
                font-size: 1.8rem;
            }
        }
        @media (max-width: 768px) {
            .menu-toggle {
                display: block;
            }
            .main-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                background: var(--bg-white);
                border-top: 1px solid var(--border-color);
                padding: 16px 0;
                margin-top: 10px;
                gap: 4px;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                width: 100%;
                padding: 12px 20px;
                border-radius: 0;
            }
            .main-nav a.active::after {
                display: none;
            }
            .main-nav a.active {
                background: var(--accent-light);
                border-left: 4px solid var(--accent);
            }
            .main-nav .nav-cta {
                margin-left: 0;
                margin-top: 8px;
                justify-content: center;
            }
            .top-bar .container {
                justify-content: center;
                font-size: 0.75rem;
            }
            .hero h1 {
                font-size: 1.9rem;
            }
            .hero-sub {
                font-size: 1rem;
            }
            .hero {
                min-height: 380px;
            }
            .hero .container {
                padding: 60px 16px 50px;
            }
            .hero-stats {
                gap: 24px;
                margin-top: 32px;
                padding-top: 24px;
            }
            .hero-stat-item .num {
                font-size: 1.4rem;
            }
            .section {
                padding: 56px 0;
            }
            .section-title {
                font-size: 1.6rem;
            }
            .advantages-grid,
            .scenes-grid {
                grid-template-columns: 1fr;
            }
            .steps-grid {
                grid-template-columns: 1fr;
                max-width: 400px;
                margin-left: auto;
                margin-right: auto;
            }
            .security-grid {
                grid-template-columns: 1fr 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .cta-section h2 {
                font-size: 1.7rem;
            }
            .btn-accent,
            .btn-outline-light {
                padding: 12px 26px;
                font-size: 0.95rem;
            }
        }
        @media (max-width: 520px) {
            .hero h1 {
                font-size: 1.6rem;
            }
            .hero-sub {
                font-size: 0.92rem;
            }
            .hero-actions {
                flex-direction: column;
                align-items: center;
            }
            .hero-stats {
                flex-direction: column;
                gap: 16px;
            }
            .security-grid {
                grid-template-columns: 1fr;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .site-logo {
                font-size: 1.1rem;
            }
            .site-logo i {
                font-size: 1.3rem;
            }
        }