/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #2A5C8E;
            --primary-light: #3A7BBF;
            --primary-dark: #1B3D5E;
            --primary-gradient: linear-gradient(135deg, #2A5C8E 0%, #4A8BC7 100%);
            --secondary: #F0B73E;
            --secondary-light: #F5CD6A;
            --accent: #E8573A;
            --bg-body: #F7F9FC;
            --bg-card: #FFFFFF;
            --bg-section-alt: #EDF2F8;
            --bg-dark: #1B2A3F;
            --text-primary: #1E2A3A;
            --text-secondary: #4A5A6E;
            --text-muted: #8A9AAD;
            --text-light: #FFFFFF;
            --border-color: #E2E8F0;
            --border-radius-sm: 8px;
            --border-radius-md: 16px;
            --border-radius-lg: 24px;
            --border-radius-xl: 32px;
            --shadow-sm: 0 2px 8px rgba(42, 92, 142, 0.06);
            --shadow-md: 0 8px 30px rgba(42, 92, 142, 0.10);
            --shadow-lg: 0 20px 50px rgba(42, 92, 142, 0.14);
            --shadow-glow: 0 0 30px rgba(42, 92, 142, 0.20);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            --transition: all 0.30s cubic-bezier(0.4, 0, 0.2, 1);
            --spacing-section: 5rem;
            --container-max: 1280px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::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-sans);
            background-color: var(--bg-body);
            color: var(--text-primary);
            line-height: 1.7;
            font-size: 1rem;
            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;
        }

        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }

        ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        /* ===== 容器 ===== */
        .container-custom {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 2rem;
        }

        @media (max-width: 768px) {
            .container-custom {
                padding: 0 1.25rem;
            }
            :root {
                --spacing-section: 3rem;
            }
        }

        /* ===== 浮动 Dock 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            padding: 1.25rem 0 0 0;
            pointer-events: none;
        }

        .nav-dock {
            max-width: 1100px;
            margin: 0 auto;
            padding: 0 1.5rem;
            pointer-events: auto;
        }

        .nav-dock-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            background: rgba(255, 255, 255, 0.88);
            backdrop-filter: blur(18px) saturate(180%);
            -webkit-backdrop-filter: blur(18px) saturate(180%);
            border-radius: 60px;
            padding: 0.5rem 0.75rem 0.5rem 1.75rem;
            box-shadow: 0 4px 30px rgba(42, 92, 142, 0.10), 0 0 0 1px rgba(255, 255, 255, 0.5);
            border: 1px solid rgba(255, 255, 255, 0.6);
            transition: var(--transition);
        }

        .nav-dock-inner:hover {
            box-shadow: 0 8px 40px rgba(42, 92, 142, 0.14);
        }

        .nav-brand {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--primary-dark);
            letter-spacing: -0.01em;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .nav-brand i {
            color: var(--secondary);
            font-size: 1.4rem;
        }
        .nav-brand:hover {
            color: var(--primary);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 0.25rem;
        }

        .nav-links .nav-link-item {
            display: inline-block;
            padding: 0.45rem 1.1rem;
            border-radius: 40px;
            font-size: 0.875rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: var(--transition);
            white-space: nowrap;
        }
        .nav-links .nav-link-item:hover {
            color: var(--primary);
            background: rgba(42, 92, 142, 0.06);
        }
        .nav-links .nav-link-item.active {
            color: var(--text-light);
            background: var(--primary-gradient);
            box-shadow: 0 4px 12px rgba(42, 92, 142, 0.25);
        }

        .nav-cta {
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }

        .nav-search-toggle {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            border: none;
            background: transparent;
            color: var(--text-secondary);
            font-size: 1rem;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: var(--transition);
            cursor: pointer;
        }
        .nav-search-toggle:hover {
            background: rgba(42, 92, 142, 0.08);
            color: var(--primary);
        }

        .nav-btn {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.45rem 1.25rem;
            border-radius: 40px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text-light);
            background: var(--primary-gradient);
            border: none;
            box-shadow: 0 4px 14px rgba(42, 92, 142, 0.25);
            transition: var(--transition);
            cursor: pointer;
        }
        .nav-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(42, 92, 142, 0.30);
            color: var(--text-light);
        }

        /* 移动端菜单按钮 */
        .nav-mobile-toggle {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            border: none;
            background: transparent;
            color: var(--text-primary);
            font-size: 1.25rem;
            cursor: pointer;
            transition: var(--transition);
        }
        .nav-mobile-toggle:hover {
            background: rgba(42, 92, 142, 0.06);
        }

        /* 移动端菜单面板 */
        .mobile-menu-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(0, 0, 0, 0.35);
            backdrop-filter: blur(4px);
            z-index: 1040;
            opacity: 0;
            transition: opacity 0.35s ease;
        }
        .mobile-menu-overlay.show {
            opacity: 1;
        }

        .mobile-menu-panel {
            position: fixed;
            top: 0;
            right: 0;
            bottom: 0;
            width: 300px;
            max-width: 80vw;
            background: var(--bg-card);
            box-shadow: -10px 0 40px rgba(0, 0, 0, 0.12);
            z-index: 1060;
            transform: translateX(100%);
            transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            padding: 2rem 1.5rem;
            display: flex;
            flex-direction: column;
        }
        .mobile-menu-panel.show {
            transform: translateX(0);
        }

        .mobile-menu-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 2rem;
        }
        .mobile-menu-close {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            border: none;
            background: var(--bg-body);
            color: var(--text-primary);
            font-size: 1.1rem;
            cursor: pointer;
        }
        .mobile-menu-links {
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
            flex: 1;
        }
        .mobile-menu-links .nav-link-item {
            display: block;
            padding: 0.8rem 1rem;
            border-radius: var(--border-radius-sm);
            font-size: 1rem;
            font-weight: 500;
            color: var(--text-primary);
            transition: var(--transition);
        }
        .mobile-menu-links .nav-link-item:hover {
            background: rgba(42, 92, 142, 0.06);
        }
        .mobile-menu-links .nav-link-item.active {
            color: var(--primary);
            background: rgba(42, 92, 142, 0.10);
            font-weight: 600;
        }

        /* ===== Hero 首屏 ===== */
        .hero-section {
            padding: 8rem 0 4rem 0;
            background: var(--bg-body);
            position: relative;
            overflow: hidden;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            top: -30%;
            right: -20%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(42, 92, 142, 0.06) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero-section::after {
            content: '';
            position: absolute;
            bottom: -20%;
            left: -10%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(240, 183, 62, 0.07) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

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

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.35rem 1rem;
            border-radius: 40px;
            background: rgba(42, 92, 142, 0.08);
            color: var(--primary);
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.02em;
            margin-bottom: 1.5rem;
        }
        .hero-badge i {
            font-size: 0.7rem;
        }

        .hero-title {
            font-size: 3.25rem;
            font-weight: 800;
            line-height: 1.15;
            color: var(--primary-dark);
            letter-spacing: -0.02em;
            max-width: 720px;
        }
        .hero-title .highlight {
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-desc {
            font-size: 1.15rem;
            color: var(--text-secondary);
            max-width: 580px;
            margin: 1.5rem 0 2rem 0;
            line-height: 1.8;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            align-items: center;
        }

        .btn-primary-custom {
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
            padding: 0.85rem 2.2rem;
            border-radius: 50px;
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-light);
            background: var(--primary-gradient);
            border: none;
            box-shadow: 0 8px 28px rgba(42, 92, 142, 0.30);
            transition: var(--transition);
            cursor: pointer;
        }
        .btn-primary-custom:hover {
            transform: translateY(-3px);
            box-shadow: 0 14px 40px rgba(42, 92, 142, 0.35);
            color: var(--text-light);
        }

        .btn-outline-custom {
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
            padding: 0.85rem 2.2rem;
            border-radius: 50px;
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--primary);
            background: transparent;
            border: 2px solid var(--border-color);
            transition: var(--transition);
            cursor: pointer;
        }
        .btn-outline-custom:hover {
            border-color: var(--primary);
            background: rgba(42, 92, 142, 0.04);
            transform: translateY(-2px);
        }

        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 2.5rem;
            margin-top: 3rem;
            padding-top: 2rem;
            border-top: 1px solid var(--border-color);
        }
        .hero-stat-item {
            text-align: left;
        }
        .hero-stat-number {
            font-size: 1.75rem;
            font-weight: 800;
            color: var(--primary-dark);
            line-height: 1.2;
        }
        .hero-stat-label {
            font-size: 0.85rem;
            color: var(--text-muted);
            font-weight: 500;
        }

        /* ===== 板块通用 ===== */
        .section-block {
            padding: var(--spacing-section) 0;
        }
        .section-alt {
            background: var(--bg-section-alt);
        }
        .section-dark {
            background: var(--bg-dark);
            color: var(--text-light);
        }

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.3rem 1rem;
            border-radius: 40px;
            background: rgba(42, 92, 142, 0.08);
            color: var(--primary);
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            text-transform: uppercase;
            margin-bottom: 1rem;
        }

        .section-title {
            font-size: 2.25rem;
            font-weight: 700;
            color: var(--primary-dark);
            letter-spacing: -0.01em;
            line-height: 1.25;
            margin-bottom: 0.75rem;
        }
        .section-title.light {
            color: var(--text-light);
        }
        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-secondary);
            max-width: 600px;
            line-height: 1.7;
        }
        .section-subtitle.light {
            color: rgba(255, 255, 255, 0.75);
        }

        .section-divider {
            width: 50px;
            height: 4px;
            border-radius: 4px;
            background: var(--primary-gradient);
            margin: 1rem 0 1.5rem 0;
        }

        /* ===== 卡片通用 ===== */
        .card-custom {
            background: var(--bg-card);
            border-radius: var(--border-radius-md);
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            overflow: hidden;
            height: 100%;
        }
        .card-custom:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: rgba(42, 92, 142, 0.15);
        }

        .card-custom .card-body {
            padding: 1.75rem;
        }
        .card-custom .card-icon {
            width: 52px;
            height: 52px;
            border-radius: var(--border-radius-sm);
            background: rgba(42, 92, 142, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--primary);
            margin-bottom: 1rem;
        }
        .card-custom .card-title {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--primary-dark);
            margin-bottom: 0.5rem;
        }
        .card-custom .card-text {
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* ===== 分类入口板块 ===== */
        .category-grid .card-custom {
            text-align: center;
            padding: 0.5rem;
        }
        .category-grid .card-custom .card-icon {
            margin: 0 auto 1rem auto;
        }
        .category-grid .card-custom .card-body {
            padding: 1.25rem 1rem;
        }
        .category-badge {
            display: inline-block;
            padding: 0.2rem 0.8rem;
            border-radius: 40px;
            font-size: 0.7rem;
            font-weight: 600;
            color: var(--primary);
            background: rgba(42, 92, 142, 0.06);
            margin-top: 0.5rem;
        }

        /* ===== 内容/资讯列表 ===== */
        .post-card {
            display: flex;
            flex-direction: column;
            background: var(--bg-card);
            border-radius: var(--border-radius-md);
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            overflow: hidden;
            height: 100%;
        }
        .post-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .post-card .post-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            background: var(--bg-section-alt);
        }
        .post-card .post-body {
            padding: 1.5rem;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .post-card .post-tag {
            display: inline-block;
            padding: 0.2rem 0.7rem;
            border-radius: 40px;
            font-size: 0.7rem;
            font-weight: 600;
            color: var(--primary);
            background: rgba(42, 92, 142, 0.08);
            margin-bottom: 0.6rem;
            align-self: flex-start;
        }
        .post-card .post-title {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--primary-dark);
            line-height: 1.4;
            margin-bottom: 0.5rem;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .post-card .post-title a {
            color: inherit;
        }
        .post-card .post-title a:hover {
            color: var(--primary);
        }
        .post-card .post-excerpt {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.7;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 1rem;
        }
        .post-card .post-meta {
            display: flex;
            align-items: center;
            gap: 1rem;
            font-size: 0.78rem;
            color: var(--text-muted);
            border-top: 1px solid var(--border-color);
            padding-top: 0.75rem;
            margin-top: auto;
        }
        .post-card .post-meta i {
            margin-right: 0.3rem;
        }

        /* ===== 数据/流程板块 ===== */
        .step-flow {
            display: flex;
            flex-wrap: wrap;
            gap: 2rem;
            justify-content: center;
        }
        .step-item {
            flex: 1 1 200px;
            max-width: 240px;
            text-align: center;
            position: relative;
        }
        .step-number {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary-gradient);
            color: var(--text-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.1rem;
            margin: 0 auto 1rem auto;
            box-shadow: 0 6px 20px rgba(42, 92, 142, 0.20);
        }
        .step-title {
            font-size: 1rem;
            font-weight: 700;
            color: var(--primary-dark);
            margin-bottom: 0.3rem;
        }
        .step-desc {
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        .stat-number-large {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--primary-dark);
            line-height: 1.2;
        }
        .stat-label {
            font-size: 0.9rem;
            color: var(--text-muted);
            font-weight: 500;
        }

        /* ===== FAQ ===== */
        .faq-accordion .accordion-item {
            border: 1px solid var(--border-color);
            border-radius: var(--border-radius-sm) !important;
            margin-bottom: 0.75rem;
            background: var(--bg-card);
            overflow: hidden;
        }
        .faq-accordion .accordion-button {
            font-weight: 600;
            color: var(--text-primary);
            background: var(--bg-card);
            padding: 1.1rem 1.5rem;
            font-size: 0.95rem;
            box-shadow: none;
            border-radius: var(--border-radius-sm) !important;
        }
        .faq-accordion .accordion-button:not(.collapsed) {
            color: var(--primary);
            background: rgba(42, 92, 142, 0.03);
        }
        .faq-accordion .accordion-button:focus {
            box-shadow: none;
            border-color: var(--border-color);
        }
        .faq-accordion .accordion-body {
            padding: 0 1.5rem 1.25rem 1.5rem;
            color: var(--text-secondary);
            font-size: 0.9rem;
            line-height: 1.7;
        }

        /* ===== CTA ===== */
        .cta-box {
            background: var(--primary-gradient);
            border-radius: var(--border-radius-lg);
            padding: 3.5rem 3rem;
            text-align: center;
            color: var(--text-light);
            box-shadow: var(--shadow-lg);
            position: relative;
            overflow: hidden;
        }
        .cta-box::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -30%;
            width: 400px;
            height: 400px;
            background: rgba(255, 255, 255, 0.05);
            border-radius: 50%;
        }
        .cta-box h3 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 0.75rem;
        }
        .cta-box p {
            font-size: 1.05rem;
            opacity: 0.85;
            max-width: 600px;
            margin: 0 auto 1.5rem auto;
        }
        .cta-box .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
            padding: 0.9rem 2.5rem;
            border-radius: 50px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--primary-dark);
            background: var(--text-light);
            border: none;
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.15);
            transition: var(--transition);
            cursor: pointer;
        }
        .cta-box .btn-cta:hover {
            transform: translateY(-3px);
            box-shadow: 0 14px 40px rgba(0, 0, 0, 0.20);
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 3rem 0 1.5rem 0;
        }
        .site-footer .footer-brand {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-light);
            display: flex;
            align-items: center;
            gap: 0.5rem;
            margin-bottom: 0.75rem;
        }
        .site-footer .footer-brand i {
            color: var(--secondary);
        }
        .site-footer .footer-desc {
            font-size: 0.88rem;
            max-width: 300px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.55);
        }
        .site-footer .footer-heading {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-light);
            margin-bottom: 1rem;
        }
        .site-footer .footer-links {
            display: flex;
            flex-direction: column;
            gap: 0.4rem;
        }
        .site-footer .footer-links a {
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.85rem;
            transition: var(--transition);
        }
        .site-footer .footer-links a:hover {
            color: var(--secondary);
            padding-left: 4px;
        }
        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 1.5rem;
            margin-top: 2rem;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 1rem;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.4);
        }
        .site-footer .footer-bottom a {
            color: rgba(255, 255, 255, 0.4);
        }
        .site-footer .footer-bottom a:hover {
            color: var(--secondary);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .hero-title {
                font-size: 2.75rem;
            }
            .section-title {
                font-size: 1.9rem;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none !important;
            }
            .nav-cta .nav-btn span {
                display: none;
            }
            .nav-cta .nav-btn {
                padding: 0.45rem 0.9rem;
            }
            .nav-mobile-toggle {
                display: flex;
                align-items: center;
                justify-content: center;
            }
            .nav-dock-inner {
                padding: 0.4rem 0.5rem 0.4rem 1.25rem;
            }
            .nav-brand {
                font-size: 1.05rem;
            }
            .nav-brand i {
                font-size: 1.1rem;
            }

            .hero-title {
                font-size: 2.1rem;
            }
            .hero-desc {
                font-size: 1rem;
            }
            .hero-stats {
                gap: 1.5rem;
            }
            .hero-stat-number {
                font-size: 1.4rem;
            }

            .section-title {
                font-size: 1.6rem;
            }
            .section-subtitle {
                font-size: 0.95rem;
            }

            .cta-box {
                padding: 2.5rem 1.5rem;
            }
            .cta-box h3 {
                font-size: 1.5rem;
            }

            .step-flow {
                gap: 1.5rem;
            }
            .step-item {
                flex: 1 1 140px;
                max-width: 160px;
            }
        }

        @media (max-width: 520px) {
            .hero-title {
                font-size: 1.75rem;
            }
            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .hero-actions .btn {
                justify-content: center;
            }
            .hero-stats {
                flex-direction: column;
                gap: 1rem;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .container-custom {
                padding: 0 1rem;
            }
            .post-card .post-img {
                height: 160px;
            }
            .cta-box {
                padding: 2rem 1.25rem;
            }
            .cta-box h3 {
                font-size: 1.25rem;
            }
            .nav-dock {
                padding: 0 0.75rem;
            }
        }

        /* ===== 工具类 ===== */
        .text-gradient {
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .bg-gradient-primary {
            background: var(--primary-gradient);
        }
        .gap-1 {
            gap: 0.5rem;
        }
        .gap-2 {
            gap: 1rem;
        }
        .gap-3 {
            gap: 1.5rem;
        }
        .gap-4 {
            gap: 2rem;
        }
        .mt-1 {
            margin-top: 0.5rem;
        }
        .mt-2 {
            margin-top: 1rem;
        }
        .mt-3 {
            margin-top: 1.5rem;
        }
        .mt-4 {
            margin-top: 2rem;
        }
        .mb-1 {
            margin-bottom: 0.5rem;
        }
        .mb-2 {
            margin-bottom: 1rem;
        }
        .mb-3 {
            margin-bottom: 1.5rem;
        }
        .mb-4 {
            margin-bottom: 2rem;
        }
        .text-center {
            text-align: center;
        }
        .text-left {
            text-align: left;
        }
        .mx-auto {
            margin-left: auto;
            margin-right: auto;
        }
        .w-full {
            width: 100%;
        }
        .d-flex {
            display: flex;
        }
        .flex-wrap {
            flex-wrap: wrap;
        }
        .align-center {
            align-items: center;
        }
        .justify-center {
            justify-content: center;
        }
        .justify-between {
            justify-content: space-between;
        }
        .flex-column {
            flex-direction: column;
        }

/* roulang page: article */
:root {
            --primary: #1a5276;
            --primary-light: #2e86c1;
            --primary-dark: #0e2f44;
            --secondary: #e67e22;
            --secondary-light: #f39c12;
            --accent: #27ae60;
            --bg-light: #f0f4f8;
            --bg-white: #ffffff;
            --text-dark: #1c2833;
            --text-body: #2c3e50;
            --text-muted: #6c7a89;
            --border-color: #dce4ec;
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow-md: 0 8px 30px rgba(0,0,0,0.08);
            --shadow-lg: 0 16px 48px rgba(0,0,0,0.12);
            --transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
            --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
        }

        *, *::before, *::after { box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            margin: 0;
            padding: 0;
            font-family: var(--font-family);
            font-size: 1rem;
            line-height: 1.7;
            color: var(--text-body);
            background: var(--bg-light);
            -webkit-font-smoothing: antialiased;
        }
        a { color: var(--primary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--primary-light); text-decoration: none; }
        img { max-width: 100%; height: auto; display: block; }
        button, input, textarea { font-family: inherit; font-size: inherit; }
        ul, ol { padding-left: 1.25rem; }
        .container-custom { max-width: 1200px; margin: 0 auto; padding: 0 1.5rem; }

        /* ===== 浮动 Dock 导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            padding: 0.75rem 0;
            background: transparent;
            pointer-events: none;
        }
        .site-header * { pointer-events: auto; }
        .nav-dock {
            max-width: 1100px;
            margin: 0 auto;
            padding: 0 1rem;
            background: rgba(255,255,255,0.85);
            backdrop-filter: blur(20px) saturate(1.4);
            -webkit-backdrop-filter: blur(20px) saturate(1.4);
            border-radius: 60px;
            box-shadow: 0 4px 24px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
            border: 1px solid rgba(255,255,255,0.5);
            transition: var(--transition);
        }
        .nav-dock-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 60px;
            gap: 0.5rem;
        }
        .nav-brand {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-weight: 700;
            font-size: 1.2rem;
            color: var(--primary-dark);
            white-space: nowrap;
            flex-shrink: 0;
        }
        .nav-brand i { color: var(--secondary); font-size: 1.3rem; }
        .nav-brand:hover { color: var(--primary); }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 0.15rem;
            flex-wrap: nowrap;
            overflow-x: auto;
            -ms-overflow-style: none;
            scrollbar-width: none;
        }
        .nav-links::-webkit-scrollbar { display: none; }
        .nav-link-item {
            padding: 0.4rem 0.9rem;
            border-radius: 30px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-body);
            white-space: nowrap;
            transition: var(--transition);
            position: relative;
        }
        .nav-link-item:hover { color: var(--primary); background: rgba(26,82,118,0.06); }
        .nav-link-item.active {
            color: #fff;
            background: var(--primary);
            box-shadow: 0 2px 10px rgba(26,82,118,0.25);
        }
        .nav-link-item.active:hover { color: #fff; background: var(--primary-dark); }
        .nav-cta {
            display: flex;
            align-items: center;
            gap: 0.4rem;
            flex-shrink: 0;
        }
        .nav-search-toggle {
            background: transparent;
            border: none;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-muted);
            transition: var(--transition);
            cursor: pointer;
        }
        .nav-search-toggle:hover { background: rgba(0,0,0,0.05); color: var(--primary); }
        .nav-btn {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.45rem 1.2rem;
            border-radius: 30px;
            background: var(--secondary);
            color: #fff;
            font-weight: 600;
            font-size: 0.85rem;
            border: none;
            transition: var(--transition);
            white-space: nowrap;
        }
        .nav-btn:hover { background: var(--secondary-light); color: #fff; transform: translateY(-1px); box-shadow: 0 4px 16px rgba(230,126,34,0.3); }
        .nav-btn i { font-size: 0.75rem; }
        .nav-mobile-toggle {
            display: none;
            background: transparent;
            border: none;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            align-items: center;
            justify-content: center;
            color: var(--text-dark);
            font-size: 1.2rem;
            cursor: pointer;
            transition: var(--transition);
        }
        .nav-mobile-toggle:hover { background: rgba(0,0,0,0.05); }
        .nav-mobile-toggle:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }

        /* ===== 文章详情 ===== */
        .article-hero {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 60%, var(--primary-light) 100%);
            padding: 3rem 0 2.5rem;
            margin-top: -1.5rem;
            position: relative;
            overflow: hidden;
        }
        .article-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.04'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
            opacity: 0.5;
        }
        .article-hero .container-custom { position: relative; z-index: 1; }
        .article-breadcrumb {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            color: rgba(255,255,255,0.7);
            font-size: 0.85rem;
            margin-bottom: 1.25rem;
            flex-wrap: wrap;
        }
        .article-breadcrumb a { color: rgba(255,255,255,0.8); }
        .article-breadcrumb a:hover { color: #fff; }
        .article-breadcrumb .sep { color: rgba(255,255,255,0.4); }
        .article-hero-title {
            font-size: 2rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.3;
            margin: 0 0 0.75rem;
            max-width: 800px;
        }
        .article-hero-meta {
            display: flex;
            align-items: center;
            gap: 1.25rem;
            color: rgba(255,255,255,0.8);
            font-size: 0.9rem;
            flex-wrap: wrap;
        }
        .article-hero-meta .badge-cat {
            background: rgba(255,255,255,0.18);
            color: #fff;
            padding: 0.2rem 0.9rem;
            border-radius: 30px;
            font-size: 0.8rem;
            font-weight: 500;
        }
        .article-hero-meta i { margin-right: 0.3rem; }

        .article-main {
            padding: 2.5rem 0 3rem;
        }
        .article-content-wrap {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 2.5rem;
            border: 1px solid var(--border-color);
        }
        .article-content-body {
            font-size: 1.05rem;
            line-height: 1.9;
            color: var(--text-body);
        }
        .article-content-body h2 { font-size: 1.6rem; font-weight: 700; color: var(--primary-dark); margin: 2rem 0 0.75rem; }
        .article-content-body h3 { font-size: 1.3rem; font-weight: 600; color: var(--primary); margin: 1.5rem 0 0.5rem; }
        .article-content-body p { margin-bottom: 1rem; }
        .article-content-body ul, .article-content-body ol { margin-bottom: 1rem; }
        .article-content-body li { margin-bottom: 0.35rem; }
        .article-content-body a { color: var(--primary-light); text-decoration: underline; }
        .article-content-body a:hover { color: var(--primary); }
        .article-content-body blockquote {
            border-left: 4px solid var(--secondary);
            background: var(--bg-light);
            padding: 1rem 1.5rem;
            margin: 1.5rem 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-dark);
            font-style: normal;
        }
        .article-content-body img {
            border-radius: var(--radius-sm);
            margin: 1.5rem 0;
            box-shadow: var(--shadow-sm);
        }
        .article-content-body .table-wrap { overflow-x: auto; margin: 1.5rem 0; }
        .article-content-body table { width: 100%; border-collapse: collapse; font-size: 0.95rem; }
        .article-content-body th, .article-content-body td { padding: 0.6rem 1rem; border: 1px solid var(--border-color); text-align: left; }
        .article-content-body th { background: var(--bg-light); font-weight: 600; color: var(--primary-dark); }

        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
            margin-top: 2rem;
            padding-top: 1.5rem;
            border-top: 1px solid var(--border-color);
        }
        .article-tag {
            display: inline-block;
            padding: 0.25rem 0.9rem;
            border-radius: 30px;
            background: var(--bg-light);
            color: var(--text-muted);
            font-size: 0.8rem;
            font-weight: 500;
            transition: var(--transition);
        }
        .article-tag:hover { background: var(--primary); color: #fff; }

        .article-nav-links {
            display: flex;
            justify-content: space-between;
            margin-top: 2rem;
            padding-top: 1.5rem;
            border-top: 1px solid var(--border-color);
            gap: 1rem;
            flex-wrap: wrap;
        }
        .article-nav-link {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.6rem 1.2rem;
            border-radius: var(--radius-sm);
            background: var(--bg-light);
            color: var(--text-body);
            font-size: 0.9rem;
            font-weight: 500;
            transition: var(--transition);
            max-width: 48%;
        }
        .article-nav-link:hover { background: var(--primary); color: #fff; transform: translateY(-2px); box-shadow: var(--shadow-sm); }
        .article-nav-link .dir { font-size: 0.75rem; color: var(--text-muted); }
        .article-nav-link:hover .dir { color: rgba(255,255,255,0.7); }

        .article-not-found {
            text-align: center;
            padding: 4rem 2rem;
        }
        .article-not-found i { font-size: 3rem; color: var(--text-muted); margin-bottom: 1rem; }
        .article-not-found h2 { font-size: 1.6rem; color: var(--text-dark); margin-bottom: 0.75rem; }
        .article-not-found p { color: var(--text-muted); margin-bottom: 1.5rem; }
        .article-not-found .btn-home {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.6rem 1.8rem;
            border-radius: 30px;
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            transition: var(--transition);
        }
        .article-not-found .btn-home:hover { background: var(--primary-dark); color: #fff; transform: translateY(-2px); box-shadow: var(--shadow-sm); }

        /* ===== 相关文章 ===== */
        .related-section {
            padding: 0 0 3rem;
        }
        .related-title {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--primary-dark);
            margin-bottom: 1.25rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .related-title i { color: var(--secondary); }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
            gap: 1.25rem;
        }
        .related-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 1.25rem 1.5rem;
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .related-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: var(--primary-light); }
        .related-card .rc-cat {
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--primary-light);
            text-transform: uppercase;
            letter-spacing: 0.3px;
        }
        .related-card .rc-title {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-dark);
            margin: 0.4rem 0 0.3rem;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card .rc-title a { color: inherit; }
        .related-card .rc-title a:hover { color: var(--primary); }
        .related-card .rc-desc {
            font-size: 0.85rem;
            color: var(--text-muted);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 0.5rem;
        }
        .related-card .rc-meta {
            font-size: 0.78rem;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255,255,255,0.85);
            padding: 3rem 0 1.5rem;
        }
        .site-footer .footer-brand {
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 0.75rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .site-footer .footer-brand i { color: var(--secondary); }
        .site-footer .footer-desc { font-size: 0.9rem; line-height: 1.7; color: rgba(255,255,255,0.65); max-width: 320px; }
        .site-footer .footer-heading {
            font-size: 0.95rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 0.75rem;
            position: relative;
            padding-bottom: 0.4rem;
        }
        .site-footer .footer-heading::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 28px;
            height: 2px;
            background: var(--secondary);
            border-radius: 2px;
        }
        .site-footer .footer-links { display: flex; flex-direction: column; gap: 0.4rem; }
        .site-footer .footer-links a {
            color: rgba(255,255,255,0.7);
            font-size: 0.88rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
        }
        .site-footer .footer-links a:hover { color: var(--secondary-light); padding-left: 3px; }
        .site-footer .footer-bottom {
            margin-top: 2rem;
            padding-top: 1.25rem;
            border-top: 1px solid rgba(255,255,255,0.1);
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 0.75rem;
            font-size: 0.82rem;
            color: rgba(255,255,255,0.5);
        }

        /* ===== 搜索弹窗 ===== */
        .search-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0,0,0,0.5);
            backdrop-filter: blur(6px);
            z-index: 2000;
            display: none;
            align-items: center;
            justify-content: center;
            padding: 1.5rem;
        }
        .search-overlay.open { display: flex; }
        .search-overlay .search-panel {
            background: #fff;
            border-radius: var(--radius-md);
            max-width: 540px;
            width: 100%;
            padding: 1.5rem;
            box-shadow: var(--shadow-lg);
            animation: slideUp 0.3s ease;
        }
        @keyframes slideUp { from { opacity:0; transform:translateY(20px); } to { opacity:1; transform:translateY(0); } }
        .search-overlay .search-input-group {
            display: flex;
            gap: 0.5rem;
        }
        .search-overlay .search-input-group input {
            flex: 1;
            border: 2px solid var(--border-color);
            border-radius: var(--radius-sm);
            padding: 0.65rem 1rem;
            font-size: 1rem;
            outline: none;
            transition: var(--transition);
        }
        .search-overlay .search-input-group input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(26,82,118,0.12); }
        .search-overlay .search-input-group button {
            padding: 0.65rem 1.4rem;
            border-radius: var(--radius-sm);
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            border: none;
            transition: var(--transition);
        }
        .search-overlay .search-input-group button:hover { background: var(--primary-dark); }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .article-hero-title { font-size: 1.7rem; }
            .article-content-wrap { padding: 1.75rem; }
        }
        @media (max-width: 768px) {
            .nav-links { display: none; }
            .nav-mobile-toggle { display: flex; }
            .nav-dock-inner { height: 56px; }
            .nav-btn span { display: none; }
            .nav-btn { padding: 0.45rem 0.9rem; }
            .nav-dock { border-radius: 40px; margin: 0 0.75rem; }
            .nav-links.open {
                display: flex;
                flex-direction: column;
                position: absolute;
                top: calc(100% + 8px);
                left: 0;
                right: 0;
                background: rgba(255,255,255,0.98);
                backdrop-filter: blur(20px);
                border-radius: var(--radius-md);
                box-shadow: var(--shadow-lg);
                padding: 0.75rem 0.5rem;
                gap: 0.2rem;
                border: 1px solid var(--border-color);
                z-index: 1050;
            }
            .nav-links.open .nav-link-item { padding: 0.6rem 1rem; border-radius: var(--radius-sm); }
            .article-hero { padding: 2rem 0 1.5rem; }
            .article-hero-title { font-size: 1.4rem; }
            .article-hero-meta { gap: 0.75rem; font-size: 0.82rem; }
            .article-content-wrap { padding: 1.25rem; border-radius: var(--radius-sm); }
            .article-content-body { font-size: 0.98rem; }
            .article-content-body h2 { font-size: 1.3rem; }
            .article-content-body h3 { font-size: 1.1rem; }
            .article-nav-links { flex-direction: column; }
            .article-nav-link { max-width: 100%; }
            .related-grid { grid-template-columns: 1fr; }
            .site-footer .footer-bottom { flex-direction: column; text-align: center; }
            .search-overlay .search-panel { padding: 1rem; }
        }
        @media (max-width: 520px) {
            .site-header { padding: 0.5rem 0; }
            .nav-dock { border-radius: 30px; margin: 0 0.5rem; }
            .nav-dock-inner { height: 50px; gap: 0.25rem; }
            .nav-brand { font-size: 1rem; }
            .nav-brand i { font-size: 1.1rem; }
            .nav-btn { font-size: 0.78rem; padding: 0.35rem 0.7rem; }
            .nav-search-toggle { width: 32px; height: 32px; font-size: 0.85rem; }
            .nav-mobile-toggle { width: 32px; height: 32px; font-size: 1rem; }
            .article-hero-title { font-size: 1.2rem; }
            .article-hero { padding: 1.5rem 0 1rem; }
            .article-content-wrap { padding: 1rem; }
            .article-content-body { font-size: 0.92rem; line-height: 1.75; }
            .article-content-body h2 { font-size: 1.15rem; }
            .article-tags { gap: 0.35rem; }
            .article-tag { font-size: 0.72rem; padding: 0.15rem 0.7rem; }
            .related-card { padding: 1rem; }
            .site-footer { padding: 2rem 0 1rem; }
            .site-footer .footer-brand { font-size: 1.1rem; }
        }

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

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #0d6e6e;
            --primary-light: #14a3a3;
            --primary-dark: #094d4d;
            --primary-soft: rgba(13, 110, 110, 0.08);
            --accent: #f5b042;
            --accent-dark: #d4942b;
            --bg-body: #f7fafc;
            --bg-white: #ffffff;
            --bg-card: #ffffff;
            --bg-dark: #0b2b2b;
            --text-primary: #1a2e2e;
            --text-secondary: #4a5f5f;
            --text-muted: #7a8f8f;
            --text-light: #e8f0f0;
            --border-color: #dee9e9;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0, 20, 20, 0.06);
            --shadow-md: 0 6px 24px rgba(0, 20, 20, 0.08);
            --shadow-lg: 0 12px 48px rgba(0, 20, 20, 0.12);
            --shadow-glow: 0 0 30px rgba(13, 110, 110, 0.15);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --dock-bg: rgba(255, 255, 255, 0.88);
            --dock-blur: 18px;
            --dock-shadow: 0 8px 32px rgba(0, 20, 20, 0.10);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-sans);
            font-size: 1rem;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-body);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

        /* ===== 浮动 Dock 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            padding: 16px 24px;
            pointer-events: none;
        }

        .nav-dock {
            max-width: 1100px;
            margin: 0 auto;
            background: var(--dock-bg);
            backdrop-filter: blur(var(--dock-blur));
            -webkit-backdrop-filter: blur(var(--dock-blur));
            border-radius: 60px;
            box-shadow: var(--dock-shadow);
            border: 1px solid rgba(255, 255, 255, 0.5);
            pointer-events: auto;
            padding: 8px 12px;
            transition: var(--transition);
        }

        .nav-dock:hover {
            box-shadow: 0 12px 40px rgba(0, 20, 20, 0.14);
        }

        .nav-dock-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding: 0 8px;
        }

        .nav-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--primary-dark);
            letter-spacing: -0.3px;
            white-space: nowrap;
            padding: 6px 0;
        }
        .nav-brand i {
            font-size: 1.5rem;
            color: var(--primary);
        }
        .nav-brand:hover {
            color: var(--primary);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            flex-wrap: wrap;
        }

        .nav-link-item {
            padding: 6px 16px;
            border-radius: 30px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: var(--transition);
            white-space: nowrap;
        }
        .nav-link-item:hover {
            background: var(--primary-soft);
            color: var(--primary-dark);
        }
        .nav-link-item.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 2px 12px rgba(13, 110, 110, 0.25);
        }
        .nav-link-item.active:hover {
            background: var(--primary-light);
            color: #fff;
        }

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

        .nav-search-toggle {
            background: transparent;
            border: none;
            font-size: 1.1rem;
            color: var(--text-secondary);
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: var(--transition);
            cursor: pointer;
        }
        .nav-search-toggle:hover {
            background: var(--primary-soft);
            color: var(--primary);
        }

        .nav-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--accent);
            color: #1a2e2e;
            padding: 8px 20px;
            border-radius: 30px;
            font-size: 0.9rem;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            white-space: nowrap;
        }
        .nav-btn i {
            font-size: 0.85rem;
            transition: var(--transition);
        }
        .nav-btn:hover {
            background: var(--accent-dark);
            color: #1a2e2e;
            transform: translateY(-1px);
            box-shadow: 0 4px 16px rgba(245, 176, 66, 0.35);
        }
        .nav-btn:hover i {
            transform: translateX(3px);
        }

        .nav-mobile-toggle {
            display: none;
            background: transparent;
            border: none;
            font-size: 1.3rem;
            color: var(--text-primary);
            width: 40px;
            height: 40px;
            border-radius: 50%;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: var(--transition);
        }
        .nav-mobile-toggle:hover {
            background: var(--primary-soft);
        }

        /* 移动端导航面板 */
        .mobile-menu-panel {
            display: none;
            position: fixed;
            top: 90px;
            left: 16px;
            right: 16px;
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-lg);
            padding: 20px 24px;
            z-index: 1040;
            border: 1px solid var(--border-color);
            max-height: 70vh;
            overflow-y: auto;
            opacity: 0;
            transform: translateY(-12px) scale(0.97);
            transition: opacity 0.35s ease, transform 0.35s ease;
        }
        .mobile-menu-panel.open {
            opacity: 1;
            transform: translateY(0) scale(1);
        }
        .mobile-menu-panel .mobile-nav-item {
            display: block;
            padding: 12px 16px;
            border-radius: var(--radius-md);
            font-size: 1rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: var(--transition);
        }
        .mobile-menu-panel .mobile-nav-item:hover {
            background: var(--primary-soft);
            color: var(--primary-dark);
        }
        .mobile-menu-panel .mobile-nav-item.active {
            background: var(--primary);
            color: #fff;
        }
        .mobile-menu-panel .mobile-nav-cta {
            display: block;
            text-align: center;
            margin-top: 12px;
            padding: 12px;
            background: var(--accent);
            color: #1a2e2e;
            border-radius: var(--radius-md);
            font-weight: 600;
        }
        .mobile-menu-panel .mobile-nav-cta:hover {
            background: var(--accent-dark);
            color: #1a2e2e;
        }

        /* ===== 页面主体 ===== */
        .main-content {
            padding-top: 90px;
        }

        /* ===== Hero ===== */
        .category-hero {
            background: linear-gradient(145deg, #094d4d 0%, #0d6e6e 50%, #14a3a3 100%);
            padding: 80px 0 70px;
            position: relative;
            overflow: hidden;
        }
        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url("data:image/svg+xml,%3Csvg width='80' height='80' viewBox='0 0 80 80' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M50 0c0 13.807-11.193 25-25 25S0 13.807 0 0h50z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E") repeat;
            opacity: 0.4;
        }
        .category-hero .container-custom {
            position: relative;
            z-index: 1;
        }
        .category-hero h1 {
            font-size: 2.8rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.5px;
            line-height: 1.2;
            margin-bottom: 16px;
        }
        .category-hero h1 i {
            color: var(--accent);
            margin-right: 12px;
        }
        .category-hero p {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 680px;
            line-height: 1.8;
            margin-bottom: 24px;
        }
        .category-hero .hero-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        .category-hero .hero-tags span {
            background: rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(4px);
            padding: 6px 18px;
            border-radius: 30px;
            font-size: 0.85rem;
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.2);
        }

        /* ===== 板块通用 ===== */
        .section-padding {
            padding: 80px 0;
        }

        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: -0.3px;
            margin-bottom: 8px;
        }
        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 600px;
            margin-bottom: 40px;
        }
        .section-divider {
            width: 60px;
            height: 4px;
            background: var(--primary);
            border-radius: 4px;
            margin-bottom: 20px;
        }

        /* ===== 平台特色卡片 ===== */
        .feature-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 32px 24px;
            height: 100%;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }
        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: var(--primary-light);
        }
        .feature-card .icon-wrap {
            width: 56px;
            height: 56px;
            border-radius: var(--radius-md);
            background: var(--primary-soft);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: var(--primary);
            margin-bottom: 18px;
            transition: var(--transition);
        }
        .feature-card:hover .icon-wrap {
            background: var(--primary);
            color: #fff;
        }
        .feature-card h5 {
            font-size: 1.15rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 10px;
        }
        .feature-card p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            margin-bottom: 0;
            line-height: 1.7;
        }

        /* ===== 使用流程 ===== */
        .step-flow {
            counter-reset: step;
        }
        .step-item {
            display: flex;
            gap: 20px;
            padding: 24px 20px;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
            margin-bottom: 16px;
            transition: var(--transition);
            align-items: flex-start;
        }
        .step-item:hover {
            border-color: var(--primary-light);
            box-shadow: var(--shadow-md);
            transform: translateX(6px);
        }
        .step-item .step-num {
            flex-shrink: 0;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.1rem;
        }
        .step-item .step-content h5 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 4px;
        }
        .step-item .step-content p {
            font-size: 0.92rem;
            color: var(--text-secondary);
            margin-bottom: 0;
        }

        /* ===== 功能列表 ===== */
        .func-list {
            list-style: none;
            padding: 0;
        }
        .func-list li {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            padding: 14px 16px;
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-color);
            margin-bottom: 10px;
            transition: var(--transition);
        }
        .func-list li:hover {
            border-color: var(--primary-light);
            background: var(--primary-soft);
        }
        .func-list li i {
            color: var(--primary);
            font-size: 1.1rem;
            margin-top: 2px;
            flex-shrink: 0;
        }
        .func-list li span {
            font-size: 0.95rem;
            color: var(--text-secondary);
        }
        .func-list li strong {
            color: var(--text-primary);
            font-weight: 600;
        }

        /* ===== FAQ ===== */
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            margin-bottom: 12px;
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--primary-light);
        }
        .faq-question {
            padding: 18px 24px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-primary);
            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::after {
            content: '\f107';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 1.1rem;
            color: var(--text-muted);
            transition: var(--transition);
        }
        .faq-question[aria-expanded="true"]::after {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-answer {
            padding: 0 24px 18px;
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.8;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(145deg, #094d4d, #0d6e6e);
            padding: 70px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(245, 176, 66, 0.08) 0%, transparent 70%);
        }
        .cta-section .container-custom {
            position: relative;
            z-index: 1;
        }
        .cta-section h2 {
            font-size: 2.2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }
        .cta-section p {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.8);
            max-width: 600px;
            margin: 0 auto 28px;
        }
        .cta-section .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            background: var(--accent);
            color: #1a2e2e;
            padding: 14px 36px;
            border-radius: 50px;
            font-size: 1.05rem;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: var(--transition);
        }
        .cta-section .cta-btn i {
            transition: var(--transition);
        }
        .cta-section .cta-btn:hover {
            background: var(--accent-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(245, 176, 66, 0.35);
        }
        .cta-section .cta-btn:hover i {
            transform: translateX(4px);
        }

        /* ===== 数据统计 ===== */
        .stat-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .stat-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 28px 20px;
            text-align: center;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }
        .stat-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .stat-item .stat-num {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.5px;
        }
        .stat-item .stat-label {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-top: 4px;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            color: var(--text-light);
            padding: 60px 0 30px;
        }
        .site-footer .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
        }
        .site-footer .footer-brand i {
            color: var(--accent);
        }
        .site-footer .footer-desc {
            font-size: 0.92rem;
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.7;
            max-width: 360px;
        }
        .site-footer .footer-heading {
            font-size: 1rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 14px;
        }
        .site-footer .footer-links {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .site-footer .footer-links a {
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .site-footer .footer-links a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 24px;
            margin-top: 40px;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.4);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .category-hero h1 {
                font-size: 2.3rem;
            }
            .stat-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .site-header {
                padding: 12px 16px;
            }
            .nav-dock {
                padding: 6px 10px;
                border-radius: 40px;
            }
            .nav-links {
                display: none;
            }
            .nav-btn span {
                display: none;
            }
            .nav-btn i {
                margin-right: 0;
            }
            .nav-mobile-toggle {
                display: flex;
            }
            .mobile-menu-panel {
                display: block;
            }

            .category-hero {
                padding: 60px 0 50px;
            }
            .category-hero h1 {
                font-size: 1.8rem;
            }
            .category-hero p {
                font-size: 1rem;
            }

            .section-padding {
                padding: 50px 0;
            }
            .section-title {
                font-size: 1.6rem;
            }

            .stat-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .stat-item .stat-num {
                font-size: 1.8rem;
            }

            .step-item {
                flex-direction: column;
                gap: 12px;
                padding: 20px 16px;
            }
            .step-item .step-num {
                width: 36px;
                height: 36px;
                font-size: 0.95rem;
            }

            .cta-section h2 {
                font-size: 1.6rem;
            }
            .cta-section .cta-btn {
                padding: 12px 28px;
                font-size: 0.95rem;
            }

            .site-footer {
                padding: 40px 0 24px;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        @media (max-width: 520px) {
            .nav-brand {
                font-size: 1.05rem;
                gap: 6px;
            }
            .nav-brand i {
                font-size: 1.2rem;
            }
            .nav-btn {
                padding: 6px 14px;
                font-size: 0.85rem;
            }

            .category-hero h1 {
                font-size: 1.5rem;
            }
            .category-hero .hero-tags span {
                font-size: 0.75rem;
                padding: 4px 12px;
            }

            .section-title {
                font-size: 1.35rem;
            }
            .section-subtitle {
                font-size: 0.92rem;
            }

            .stat-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-item {
                padding: 20px 12px;
            }
            .stat-item .stat-num {
                font-size: 1.5rem;
            }

            .feature-card {
                padding: 24px 16px;
            }
            .feature-card .icon-wrap {
                width: 46px;
                height: 46px;
                font-size: 1.2rem;
            }

            .faq-question {
                font-size: 0.92rem;
                padding: 14px 16px;
            }
            .faq-answer {
                padding: 0 16px 14px;
                font-size: 0.88rem;
            }

            .cta-section {
                padding: 50px 0;
            }
            .cta-section h2 {
                font-size: 1.3rem;
            }
        }

/* roulang page: category3 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a6df5;
            --primary-dark: #0d4fbf;
            --primary-light: #e8f0fe;
            --accent: #f5a623;
            --accent-dark: #d98e1a;
            --bg-body: #f7f9fc;
            --bg-white: #ffffff;
            --bg-soft: #f0f4fa;
            --bg-dark: #0f1a2e;
            --text-primary: #1a2332;
            --text-secondary: #4a5568;
            --text-muted: #8896a8;
            --text-white: #ffffff;
            --border-light: #e2e8f0;
            --border-focus: #1a6df5;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(26, 109, 245, 0.06);
            --shadow-md: 0 6px 24px rgba(26, 109, 245, 0.08);
            --shadow-lg: 0 16px 48px rgba(26, 109, 245, 0.10);
            --shadow-xl: 0 24px 64px rgba(26, 109, 245, 0.14);
            --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --nav-height: 68px;
            --dock-max-width: 1120px;
        }

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

        body {
            margin: 0;
            padding: 0;
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-body);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        a:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 4px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button {
            font-family: inherit;
            cursor: pointer;
        }
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: 1rem;
        }

        /* ===== 容器 ===== */
        .container-custom {
            width: 100%;
            max-width: 1140px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== 浮动 Dock 导航 ===== */
        .site-header {
            position: sticky;
            top: 16px;
            z-index: 1050;
            padding: 0 20px;
            pointer-events: none;
        }
        .nav-dock {
            max-width: var(--dock-max-width);
            margin: 0 auto;
            background: rgba(255, 255, 255, 0.82);
            backdrop-filter: blur(18px) saturate(1.6);
            -webkit-backdrop-filter: blur(18px) saturate(1.6);
            border-radius: var(--radius-xl);
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06), 0 1px 4px rgba(0, 0, 0, 0.02);
            border: 1px solid rgba(255, 255, 255, 0.50);
            padding: 6px 8px;
            pointer-events: auto;
            transition: box-shadow var(--transition), transform var(--transition);
        }
        .nav-dock:hover {
            box-shadow: 0 8px 36px rgba(26, 109, 245, 0.10);
        }
        .nav-dock-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 6px;
        }
        .nav-brand {
            display: flex;
            align-items: center;
            gap: 8px;
            font-weight: 700;
            font-size: 1.2rem;
            color: var(--primary);
            padding: 6px 14px 6px 10px;
            border-radius: var(--radius-md);
            transition: background var(--transition);
            white-space: nowrap;
        }
        .nav-brand i {
            font-size: 1.4rem;
            color: var(--accent);
        }
        .nav-brand:hover {
            background: var(--primary-light);
            color: var(--primary-dark);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 2px;
            flex-wrap: wrap;
        }
        .nav-link-item {
            padding: 6px 16px;
            border-radius: var(--radius-md);
            font-weight: 500;
            font-size: 0.9rem;
            color: var(--text-secondary);
            transition: background var(--transition), color var(--transition);
            white-space: nowrap;
        }
        .nav-link-item:hover {
            background: var(--primary-light);
            color: var(--primary);
        }
        .nav-link-item.active {
            background: var(--primary);
            color: #fff;
        }
        .nav-link-item.active:hover {
            background: var(--primary-dark);
        }

        .nav-cta {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-search-toggle {
            background: transparent;
            border: none;
            font-size: 1.1rem;
            color: var(--text-secondary);
            padding: 8px 10px;
            border-radius: 50%;
            transition: background var(--transition), color var(--transition);
        }
        .nav-search-toggle:hover {
            background: var(--primary-light);
            color: var(--primary);
        }
        .nav-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--primary);
            color: #fff;
            padding: 8px 20px;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 0.9rem;
            transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
            border: none;
            white-space: nowrap;
        }
        .nav-btn i {
            font-size: 0.85rem;
        }
        .nav-btn:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(26, 109, 245, 0.25);
        }
        .nav-btn:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
        }

        .nav-mobile-toggle {
            display: none;
            background: transparent;
            border: none;
            font-size: 1.4rem;
            color: var(--text-primary);
            padding: 6px 10px;
            border-radius: var(--radius-sm);
            transition: background var(--transition);
        }
        .nav-mobile-toggle:hover {
            background: var(--primary-light);
        }

        /* ===== 移动端导航折叠 ===== */
        .nav-links.open {
            display: flex;
            flex-direction: column;
            width: 100%;
            background: rgba(255, 255, 255, 0.96);
            border-radius: var(--radius-md);
            padding: 10px 6px;
            gap: 4px;
            margin-top: 6px;
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.06);
        }
        .nav-links.open .nav-link-item {
            width: 100%;
            text-align: center;
        }

        /* ===== Hero ===== */
        .service-hero {
            padding: 80px 0 60px;
            margin-top: -20px;
            background: linear-gradient(165deg, #f0f4fa 0%, #e8f0fe 60%, #dce8f8 100%);
            position: relative;
            overflow: hidden;
        }
        .service-hero::after {
            content: '';
            position: absolute;
            bottom: -40px;
            right: -60px;
            width: 320px;
            height: 320px;
            background: radial-gradient(circle, rgba(26, 109, 245, 0.06) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .service-hero .container-custom {
            position: relative;
            z-index: 1;
        }
        .service-hero h1 {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--text-primary);
            line-height: 1.2;
            margin-bottom: 16px;
        }
        .service-hero h1 span {
            color: var(--primary);
        }
        .service-hero p {
            font-size: 1.1rem;
            color: var(--text-secondary);
            max-width: 600px;
            margin-bottom: 24px;
        }
        .hero-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--bg-white);
            padding: 8px 18px;
            border-radius: var(--radius-md);
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-secondary);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
        }
        .hero-badge i {
            color: var(--primary);
        }

        /* ===== 板块通用 ===== */
        .section-padding {
            padding: 72px 0;
        }
        .section-title {
            font-size: 2.0rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 12px;
            letter-spacing: -0.01em;
        }
        .section-sub {
            font-size: 1.05rem;
            color: var(--text-secondary);
            max-width: 640px;
            margin-bottom: 36px;
        }
        .section-divider {
            width: 48px;
            height: 4px;
            background: var(--primary);
            border-radius: 4px;
            margin-bottom: 20px;
        }

        /* ===== 服务卡片 ===== */
        .service-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .service-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 32px 24px 28px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: transform var(--transition), box-shadow var(--transition);
        }
        .service-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .service-card .icon {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            margin-bottom: 18px;
            background: var(--primary-light);
            color: var(--primary);
        }
        .service-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .service-card p {
            font-size: 0.92rem;
            color: var(--text-secondary);
            margin-bottom: 14px;
        }
        .service-card .tag {
            display: inline-block;
            padding: 3px 12px;
            border-radius: 20px;
            font-size: 0.78rem;
            font-weight: 500;
            background: var(--primary-light);
            color: var(--primary);
        }

        /* ===== 认证流程 ===== */
        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: step;
        }
        .process-step {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 28px 20px 24px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            text-align: center;
            transition: transform var(--transition), box-shadow var(--transition);
            position: relative;
        }
        .process-step:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
        }
        .process-step .step-num {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.1rem;
            margin: 0 auto 16px;
        }
        .process-step h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .process-step p {
            font-size: 0.88rem;
            color: var(--text-secondary);
            margin-bottom: 0;
        }

        /* ===== FAQ ===== */
        .faq-grid {
            max-width: 780px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
            padding: 0;
            margin-bottom: 12px;
            overflow: hidden;
            transition: box-shadow var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            width: 100%;
            background: transparent;
            border: none;
            padding: 18px 24px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-primary);
            text-align: left;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
        }
        .faq-question i {
            transition: transform var(--transition);
            color: var(--primary);
            font-size: 1.1rem;
        }
        .faq-question[aria-expanded="true"] i {
            transform: rotate(180deg);
        }
        .faq-answer {
            padding: 0 24px 18px;
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            border-radius: var(--radius-lg);
            padding: 52px 48px;
            text-align: center;
            color: #fff;
            box-shadow: var(--shadow-lg);
        }
        .cta-section h2 {
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .cta-section p {
            font-size: 1.05rem;
            opacity: 0.90;
            max-width: 520px;
            margin: 0 auto 24px;
        }
        .cta-section .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: #fff;
            color: var(--primary);
            padding: 12px 32px;
            border-radius: var(--radius-md);
            font-weight: 700;
            font-size: 1rem;
            transition: transform var(--transition), box-shadow var(--transition);
            border: none;
        }
        .cta-section .cta-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 32px rgba(0, 0, 0, 0.15);
            color: var(--primary-dark);
        }

        /* ===== 联系方式 ===== */
        .contact-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .contact-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            text-align: center;
            transition: transform var(--transition), box-shadow var(--transition);
        }
        .contact-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
        }
        .contact-card .icon {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            margin: 0 auto 14px;
            background: var(--primary-light);
            color: var(--primary);
        }
        .contact-card h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 4px;
        }
        .contact-card p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin-bottom: 0;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.80);
            padding: 52px 0 24px;
            margin-top: 72px;
        }
        .site-footer .footer-brand {
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 12px;
        }
        .site-footer .footer-brand i {
            color: var(--accent);
            font-size: 1.5rem;
        }
        .footer-desc {
            font-size: 0.9rem;
            opacity: 0.75;
            max-width: 340px;
            line-height: 1.7;
        }
        .footer-heading {
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            font-size: 1.0rem;
        }
        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-links a {
            color: rgba(255, 255, 255, 0.65);
            font-size: 0.9rem;
            transition: color var(--transition), padding-left var(--transition);
        }
        .footer-links a:hover {
            color: #fff;
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            margin-top: 32px;
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 10px;
            font-size: 0.85rem;
            opacity: 0.60;
        }

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

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                width: 100%;
            }
            .nav-links.open {
                display: flex;
            }
            .nav-mobile-toggle {
                display: inline-flex;
            }
            .site-header {
                top: 12px;
                padding: 0 12px;
            }
            .nav-dock {
                padding: 4px 6px;
                border-radius: var(--radius-lg);
            }
            .nav-brand {
                font-size: 1.0rem;
                padding: 4px 10px;
            }
            .nav-btn span {
                display: none;
            }
            .nav-btn {
                padding: 8px 14px;
            }
            .nav-btn i {
                margin-right: 0;
            }

            .service-hero {
                padding: 60px 0 40px;
            }
            .service-hero h1 {
                font-size: 1.8rem;
            }
            .service-hero p {
                font-size: 1rem;
            }
            .hero-badges {
                gap: 8px;
            }
            .hero-badge {
                padding: 6px 14px;
                font-size: 0.82rem;
            }

            .section-padding {
                padding: 48px 0;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .service-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .process-steps {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .contact-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .cta-section {
                padding: 36px 24px;
            }
            .cta-section h2 {
                font-size: 1.4rem;
            }

            .site-footer {
                padding: 36px 0 18px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        @media (max-width: 520px) {
            .process-steps {
                grid-template-columns: 1fr;
            }
            .nav-dock-inner {
                gap: 4px;
            }
            .nav-brand {
                font-size: 0.9rem;
            }
            .nav-link-item {
                font-size: 0.82rem;
                padding: 5px 12px;
            }
            .service-hero h1 {
                font-size: 1.5rem;
            }
            .section-title {
                font-size: 1.3rem;
            }
            .faq-question {
                padding: 14px 18px;
                font-size: 0.92rem;
            }
            .faq-answer {
                padding: 0 18px 14px;
                font-size: 0.88rem;
            }
        }

        /* ===== 工具类 ===== */
        .text-primary-custom {
            color: var(--primary);
        }
        .bg-soft-custom {
            background: var(--bg-soft);
        }
        .rounded-custom {
            border-radius: var(--radius-md);
        }
        .shadow-custom {
            box-shadow: var(--shadow-sm);
        }

/* roulang page: category2 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #0d6e9e;
            --primary-dark: #0a5a82;
            --primary-light: #e8f4fb;
            --primary-gradient: linear-gradient(135deg, #0d6e9e 0%, #0a8ec4 100%);
            --accent: #f5a623;
            --accent-hover: #e0961a;
            --accent-light: #fef3e0;
            --bg-light: #f8fafc;
            --bg-white: #ffffff;
            --bg-dark: #1a2a3a;
            --text-primary: #1a2a3a;
            --text-secondary: #4a5a6a;
            --text-muted: #7a8a9a;
            --text-light: #ffffff;
            --border-color: #e2e8f0;
            --border-light: #f0f4f8;
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --shadow-sm: 0 2px 8px rgba(13, 110, 158, 0.06);
            --shadow-md: 0 8px 24px rgba(13, 110, 158, 0.10);
            --shadow-lg: 0 16px 48px rgba(13, 110, 158, 0.14);
            --shadow-dock: 0 8px 32px rgba(13, 110, 158, 0.12);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            --container-max: 1140px;
            --nav-height: 72px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::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-sans);
            background: var(--bg-light);
            color: var(--text-primary);
            line-height: 1.6;
            padding-top: var(--nav-height);
        }

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

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

        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }

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

        /* ===== 浮动 Dock 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1080;
            padding: 12px 24px;
            background: transparent;
            pointer-events: none;
        }

        .nav-dock {
            max-width: var(--container-max);
            margin: 0 auto;
            background: rgba(255, 255, 255, 0.88);
            backdrop-filter: blur(20px) saturate(180%);
            -webkit-backdrop-filter: blur(20px) saturate(180%);
            border-radius: var(--radius-xl);
            box-shadow: var(--shadow-dock);
            border: 1px solid rgba(255, 255, 255, 0.6);
            pointer-events: auto;
            transition: var(--transition);
        }

        .nav-dock-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 10px 20px;
            gap: 16px;
        }

        .nav-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--primary-dark);
            white-space: nowrap;
            letter-spacing: -0.3px;
        }
        .nav-brand i {
            font-size: 1.5rem;
            color: var(--primary);
        }
        .nav-brand:hover {
            color: var(--primary);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            flex-wrap: wrap;
        }

        .nav-link-item {
            padding: 8px 18px;
            border-radius: 100px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: var(--transition);
            white-space: nowrap;
            background: transparent;
        }
        .nav-link-item:hover {
            background: var(--primary-light);
            color: var(--primary);
        }
        .nav-link-item.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 12px rgba(13, 110, 158, 0.25);
        }
        .nav-link-item.active:hover {
            background: var(--primary-dark);
            color: #fff;
        }

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

        .nav-search-toggle {
            background: var(--bg-light);
            border: none;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-secondary);
            transition: var(--transition);
            cursor: pointer;
        }
        .nav-search-toggle:hover {
            background: var(--primary-light);
            color: var(--primary);
        }

        .nav-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 24px;
            border-radius: 100px;
            background: var(--primary-gradient);
            color: #fff;
            font-weight: 600;
            font-size: 0.9rem;
            border: none;
            transition: var(--transition);
            box-shadow: 0 4px 14px rgba(13, 110, 158, 0.25);
            white-space: nowrap;
        }
        .nav-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(13, 110, 158, 0.35);
            color: #fff;
            background: linear-gradient(135deg, #0a5a82 0%, #0d6e9e 100%);
        }
        .nav-btn i {
            font-size: 0.85rem;
        }

        .nav-mobile-toggle {
            display: none;
            background: transparent;
            border: none;
            font-size: 1.4rem;
            color: var(--text-primary);
            cursor: pointer;
            padding: 6px 10px;
            border-radius: 8px;
            transition: var(--transition);
        }
        .nav-mobile-toggle:hover {
            background: var(--primary-light);
            color: var(--primary);
        }

        /* ===== 移动端导航 ===== */
        @media (max-width: 992px) {
            .nav-links {
                display: none;
                position: absolute;
                top: calc(100% + 8px);
                left: 12px;
                right: 12px;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(20px);
                border-radius: var(--radius-md);
                box-shadow: var(--shadow-lg);
                padding: 16px;
                flex-direction: column;
                gap: 6px;
                border: 1px solid var(--border-color);
            }
            .nav-links.open {
                display: flex;
            }
            .nav-link-item {
                width: 100%;
                text-align: center;
                padding: 12px 18px;
                border-radius: var(--radius-sm);
            }
            .nav-mobile-toggle {
                display: block;
            }
            .nav-btn span {
                display: none;
            }
            .nav-btn {
                padding: 10px 16px;
            }
        }

        @media (max-width: 576px) {
            .site-header {
                padding: 8px 12px;
            }
            .nav-dock-inner {
                padding: 8px 12px;
            }
            .nav-brand {
                font-size: 1.05rem;
            }
            .nav-brand i {
                font-size: 1.2rem;
            }
        }

        /* ===== Page Hero ===== */
        .page-hero {
            background: var(--primary-gradient);
            padding: 80px 0 100px;
            position: relative;
            overflow: hidden;
            margin-top: -12px;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            top: -40%;
            right: -20%;
            width: 600px;
            height: 600px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            pointer-events: none;
        }
        .page-hero::after {
            content: '';
            position: absolute;
            bottom: -30%;
            left: -10%;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.04);
            pointer-events: none;
        }
        .page-hero .container-custom {
            position: relative;
            z-index: 2;
        }
        .page-hero h1 {
            font-size: 2.6rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
            line-height: 1.2;
        }
        .page-hero p {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 640px;
            line-height: 1.7;
        }
        .page-hero .breadcrumb {
            background: transparent;
            padding: 0;
            margin-bottom: 20px;
        }
        .page-hero .breadcrumb-item,
        .page-hero .breadcrumb-item a {
            color: rgba(255, 255, 255, 0.7);
            font-size: 0.9rem;
        }
        .page-hero .breadcrumb-item.active {
            color: #fff;
        }
        .page-hero .breadcrumb-item+.breadcrumb-item::before {
            color: rgba(255, 255, 255, 0.4);
        }

        @media (max-width: 768px) {
            .page-hero {
                padding: 60px 0 70px;
            }
            .page-hero h1 {
                font-size: 1.9rem;
            }
            .page-hero p {
                font-size: 1rem;
            }
        }
        @media (max-width: 576px) {
            .page-hero h1 {
                font-size: 1.6rem;
            }
        }

        /* ===== 通用板块标题 ===== */
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
            letter-spacing: -0.3px;
        }
        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 600px;
            line-height: 1.7;
        }
        @media (max-width: 768px) {
            .section-title {
                font-size: 1.6rem;
            }
            .section-subtitle {
                font-size: 0.95rem;
            }
        }

        /* ===== 登录方式卡片 ===== */
        .method-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 32px 24px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
            height: 100%;
            text-align: center;
        }
        .method-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: var(--primary-light);
        }
        .method-card .icon-wrap {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
            font-size: 1.6rem;
            color: var(--primary);
            transition: var(--transition);
        }
        .method-card:hover .icon-wrap {
            background: var(--primary);
            color: #fff;
        }
        .method-card h5 {
            font-size: 1.15rem;
            font-weight: 600;
            margin-bottom: 10px;
            color: var(--text-primary);
        }
        .method-card p {
            font-size: 0.92rem;
            color: var(--text-secondary);
            margin-bottom: 0;
            line-height: 1.6;
        }
        .method-card .step-badge {
            display: inline-block;
            background: var(--accent-light);
            color: var(--accent);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 2px 14px;
            border-radius: 100px;
            margin-bottom: 12px;
        }

        /* ===== 步骤流程 ===== */
        .step-flow {
            position: relative;
            padding: 0;
        }
        .step-item {
            display: flex;
            gap: 24px;
            margin-bottom: 32px;
            position: relative;
        }
        .step-item:last-child {
            margin-bottom: 0;
        }
        .step-number {
            flex-shrink: 0;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary-gradient);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.1rem;
            box-shadow: 0 4px 14px rgba(13, 110, 158, 0.2);
            position: relative;
            z-index: 2;
        }
        .step-item:not(:last-child)::after {
            content: '';
            position: absolute;
            left: 23px;
            top: 52px;
            bottom: -16px;
            width: 2px;
            background: var(--border-color);
        }
        .step-content {
            flex: 1;
            padding-top: 6px;
        }
        .step-content h5 {
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: 6px;
            color: var(--text-primary);
        }
        .step-content p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin-bottom: 0;
            line-height: 1.6;
        }

        /* ===== FAQ ===== */
        .faq-item {
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            margin-bottom: 12px;
            background: var(--bg-white);
            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-primary);
            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:hover {
            color: var(--primary);
        }
        .faq-question .faq-icon {
            font-size: 1rem;
            color: var(--primary);
            transition: var(--transition);
            flex-shrink: 0;
            margin-left: 12px;
        }
        .faq-item.active .faq-question .faq-icon {
            transform: rotate(180deg);
        }
        .faq-answer {
            padding: 0 22px 18px;
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.7;
            display: none;
        }
        .faq-item.active .faq-answer {
            display: block;
        }

        /* ===== 安全提示卡 ===== */
        .safety-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            border-left: 4px solid var(--accent);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            height: 100%;
        }
        .safety-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .safety-card .safety-icon {
            font-size: 1.8rem;
            color: var(--accent);
            margin-bottom: 12px;
        }
        .safety-card h5 {
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: 8px;
        }
        .safety-card p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin-bottom: 0;
            line-height: 1.6;
        }

        /* ===== CTA 区块 ===== */
        .cta-block {
            background: var(--primary-gradient);
            border-radius: var(--radius-lg);
            padding: 60px 48px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-block::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.05);
            pointer-events: none;
        }
        .cta-block h2 {
            font-size: 2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }
        .cta-block p {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 600px;
            margin: 0 auto 28px;
        }
        .cta-block .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 16px 40px;
            border-radius: 100px;
            background: #fff;
            color: var(--primary-dark);
            font-weight: 700;
            font-size: 1.05rem;
            border: none;
            transition: var(--transition);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
        }
        .cta-block .btn-cta:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 36px rgba(0, 0, 0, 0.2);
            color: var(--primary);
        }

        @media (max-width: 768px) {
            .cta-block {
                padding: 40px 24px;
            }
            .cta-block h2 {
                font-size: 1.5rem;
            }
            .cta-block p {
                font-size: 0.95rem;
            }
            .cta-block .btn-cta {
                padding: 14px 28px;
                font-size: 0.95rem;
            }
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.8);
            padding: 60px 0 32px;
            margin-top: 80px;
        }
        .site-footer .footer-brand {
            font-size: 1.4rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .site-footer .footer-brand i {
            color: var(--accent);
        }
        .site-footer .footer-desc {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.7;
            max-width: 360px;
        }
        .site-footer .footer-heading {
            font-size: 0.95rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }
        .site-footer .footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .site-footer .footer-links a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.88rem;
            transition: var(--transition);
        }
        .site-footer .footer-links a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 24px;
            margin-top: 40px;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.45);
        }

        @media (max-width: 768px) {
            .site-footer {
                padding: 40px 0 24px;
                margin-top: 60px;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== 通用间距 ===== */
        .py-section {
            padding: 80px 0;
        }
        .py-section-sm {
            padding: 60px 0;
        }
        @media (max-width: 768px) {
            .py-section {
                padding: 50px 0;
            }
            .py-section-sm {
                padding: 40px 0;
            }
        }

        /* ===== 工具类 ===== */
        .bg-soft-primary {
            background: var(--primary-light);
        }
        .bg-white {
            background: var(--bg-white);
        }
        .rounded-custom {
            border-radius: var(--radius-md);
        }
        .shadow-custom {
            box-shadow: var(--shadow-sm);
        }

        /* ===== 登录提示横幅 ===== */
        .tip-banner {
            background: var(--accent-light);
            border-radius: var(--radius-sm);
            padding: 16px 22px;
            display: flex;
            align-items: center;
            gap: 14px;
            border: 1px solid rgba(245, 166, 35, 0.2);
            margin-bottom: 24px;
        }
        .tip-banner i {
            font-size: 1.4rem;
            color: var(--accent);
            flex-shrink: 0;
        }
        .tip-banner span {
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }
        .tip-banner strong {
            color: var(--text-primary);
        }

        /* ===== 设备兼容标签 ===== */
        .device-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--bg-light);
            padding: 6px 16px;
            border-radius: 100px;
            font-size: 0.8rem;
            color: var(--text-secondary);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .device-tag:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-light);
        }
        .device-tag i {
            font-size: 0.85rem;
        }

        /* ===== 相关文章卡片 ===== */
        .related-card {
            background: var(--bg-white);
            border-radius: var(--radius-sm);
            padding: 20px;
            border: 1px solid var(--border-color);
            transition: var(--transition);
            height: 100%;
        }
        .related-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            border-color: var(--primary-light);
        }
        .related-card .related-icon {
            font-size: 1.2rem;
            color: var(--primary);
            margin-bottom: 10px;
        }
        .related-card h6 {
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 6px;
        }
        .related-card p {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 0;
            line-height: 1.5;
        }
        .related-card .related-link {
            font-size: 0.82rem;
            font-weight: 500;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            margin-top: 10px;
        }
        .related-card .related-link:hover {
            gap: 8px;
        }

        /* ===== 搜索框（导航内） ===== */
        .nav-search-form {
            display: none;
            position: absolute;
            top: calc(100% + 8px);
            left: 12px;
            right: 12px;
            background: var(--bg-white);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-lg);
            padding: 12px 16px;
            border: 1px solid var(--border-color);
            z-index: 10;
        }
        .nav-search-form.open {
            display: block;
        }
        .nav-search-form .input-group {
            border-radius: var(--radius-sm);
            overflow: hidden;
            border: 1px solid var(--border-color);
        }
        .nav-search-form .input-group:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(13, 110, 158, 0.1);
        }
        .nav-search-form .form-control {
            border: none;
            padding: 10px 16px;
            font-size: 0.9rem;
        }
        .nav-search-form .form-control:focus {
            box-shadow: none;
        }
        .nav-search-form .btn-search {
            background: var(--primary);
            color: #fff;
            border: none;
            padding: 0 20px;
            border-radius: 0;
        }
        .nav-search-form .btn-search:hover {
            background: var(--primary-dark);
        }

        @media (min-width: 993px) {
            .nav-search-form {
                left: auto;
                right: 0;
                width: 320px;
            }
        }