:root {
            --primary: #0052d9;
            --primary-light: #4080ff;
            --primary-dark: #003bb3;
            --text-dark: #1a1a1a;
            --text-gray: #666;
            --text-light: #999;
            --bg-light: #f8f9fa;
            --bg-white: #fff;
            --shadow: 0 4px 20px rgba(0,0,0,0.08);
            --shadow-hover: 0 8px 30px rgba(0,0,0,0.12);
            --transition: all 0.3s ease;
        }
        * { margin: 0; padding: 0; box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif; color: var(--text-dark); line-height: 1.6; background: var(--bg-light); }
        a { text-decoration: none; color: inherit; transition: var(--transition); }
        img { max-width: 100%; display: block; }
        
        /* 头部导航 */
        .header { position: fixed; top: 0; left: 0; right: 0; z-index: 1000; background: rgba(255,255,255,0.98); backdrop-filter: blur(10px); box-shadow: 0 2px 20px rgba(0,0,0,0.06); }
        .header-top { background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%); color: #fff; font-size: 13px; }
        .header-top-wrap { max-width: 1280px; margin: 0 auto; padding: 0 40px; display: flex; justify-content: space-between; align-items: center; height: 40px; }
        .header-top a { color: #fff; opacity: 0.9; transition: all 0.3s; }
        .header-top a:hover { opacity: 1; }
        .header-top-left { display: flex; gap: 20px; align-items: center; }
        .header-top-left span { display: flex; align-items: center; gap: 6px; }
        .top-link { display: inline-flex; align-items: center; gap: 6px; padding: 4px 12px; border-radius: 4px; font-weight: 500; }
        .top-link:hover { background: rgba(255,255,255,0.15); }
        .top-link i { font-size: 12px; }
        .top-auth { background: rgba(255,255,255,0.2); font-weight: 600; }
        .top-divider { color: rgba(255,255,255,0.4); }
        .top-phone { display: flex; align-items: center; gap: 8px; font-size: 14px; }
        .top-phone i { color: #ffd700; }
        .top-phone strong { font-size: 16px; font-weight: 700; letter-spacing: 1px; }
        .header-top-right { display: flex; gap: 12px; align-items: center; }
        .header-top-right a { display: inline-flex; align-items: center; gap: 6px; padding: 6px 14px; background: rgba(255,255,255,0.15); border-radius: 4px; font-weight: 500; }
        .header-top-right a:hover { background: rgba(255,255,255,0.25); }
        .header-wrap { max-width: 1280px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; padding: 0 40px; height: 70px; }
        .logo { display: flex; align-items: center; gap: 14px; font-size: 20px; font-weight: 700; color: var(--primary); text-decoration: none; }
        .logo img { height: 42px; }
        .logo i { font-size: 36px; color: var(--primary); }
        .logo-text { display: flex; flex-direction: column; line-height: 1.3; }
        .logo-text span { font-size: 11px; font-weight: 400; color: var(--text-gray); letter-spacing: 1px; }
        .nav { display: flex; gap: 2px; align-items: center; }
        .nav a, .nav .nav-item > a { padding: 10px 16px; font-size: 15px; color: var(--text-dark); border-radius: 4px; position: relative; white-space: nowrap; display: inline-flex; align-items: center; gap: 8px; font-weight: 600; }
        .nav a::after { content: ''; position: absolute; bottom: 4px; left: 50%; transform: translateX(-50%); width: 0; height: 2px; background: var(--primary); transition: var(--transition); }
        .nav a:hover::after, .nav a.active::after { width: 20px; }
        .nav a:hover, .nav a.active, .nav .nav-item > a:hover, .nav .nav-item > a.active { color: var(--primary); }
        .nav .nav-icon { font-size: 16px; }
        .nav .nav-text { font-weight: 600; }
        
        /* 下拉菜单 */
        .nav-item.has-sub { position: relative; }
        .nav-item.has-sub > a::after { display: none; }
        .nav-item.has-sub > a i { transition: transform 0.3s; }
        .nav-item.has-sub:hover > a i { transform: rotate(180deg); }
        .sub-menu { 
            display: none; 
            position: absolute; 
            top: 100%; 
            left: 50%; 
            transform: translateX(-50%);
            background: #fff; 
            border-radius: 12px; 
            box-shadow: 0 15px 50px rgba(0,0,0,0.15); 
            padding: 12px 0; 
            min-width: 200px; 
            z-index: 100;
            border: 1px solid #f0f0f0;
        }
        .nav-item.has-sub:hover .sub-menu { display: block; animation: subMenuFade 0.3s ease; }
        @keyframes subMenuFade { from { opacity: 0; transform: translateX(-50%) translateY(-10px); } to { opacity: 1; transform: translateX(-50%) translateY(0); } }
        .sub-menu a { display: flex; align-items: center; gap: 10px; padding: 10px 20px; font-size: 14px; color: var(--text-dark); border-radius: 0; white-space: nowrap; text-align: left; position: relative; font-weight: 500; }
        .sub-menu a span { font-weight: 500; }
        .sub-menu > li { position: relative; }
        .sub-menu a:hover { background: rgba(0,82,217,0.05); color: var(--primary); }
        .sub-menu a i { width: 18px; color: var(--primary); font-size: 14px; }
        .sub-menu a:hover i { color: var(--primary); }
        .sub-menu a::after { display: none; }
        
        /* 二级下拉菜单 */
        .sub-menu .has-sub { position: relative; }
        .sub-menu .has-sub > a::after { 
            content: '\f054'; 
            font-family: 'Font Awesome 6 Free'; 
            font-weight: 900;
            position: absolute; 
            right: 15px; 
            top: 50%; 
            transform: translateY(-50%); 
            font-size: 10px; 
            color: #999;
        }
        .sub-sub-menu {
            display: none;
            position: absolute;
            left: 100%;
            top: 0;
            background: #fff;
            border-radius: 12px;
            box-shadow: 0 15px 50px rgba(0,0,0,0.15);
            padding: 12px 0;
            min-width: 160px;
            z-index: 101;
            border: 1px solid #f0f0f0;
        }
        .sub-menu .has-sub:hover .sub-sub-menu { display: block; animation: subSubFade 0.2s ease; }
        @keyframes subSubFade { from { opacity: 0; transform: translateX(-5px); } to { opacity: 1; transform: translateX(0); } }
        .sub-sub-menu a { padding: 10px 20px; display: flex; align-items: center; gap: 10px; font-size: 14px; color: var(--text-dark); }
        .sub-sub-menu a i { width: 18px; color: var(--primary); font-size: 14px; }
        .sub-sub-menu a:hover { background: rgba(0,82,217,0.05); color: var(--primary); }
        .sub-sub-menu a:hover i { color: var(--primary); }
        
        .header-right { display: flex; align-items: center; gap: 20px; }
        .header-phone { display: flex; align-items: center; gap: 10px; background: rgba(0,82,217,0.08); padding: 10px 16px; border-radius: 6px; }
        .header-phone .phone-icon { width: 40px; height: 40px; background: var(--primary); border-radius: 50%; display: flex; align-items: center; justify-content: center; color: #fff; font-size: 16px; }
        .header-phone .phone-info { display: flex; flex-direction: column; }
        .header-phone .phone-info small { font-size: 12px; color: var(--text-gray); }
        .header-phone .phone-info strong { font-size: 18px; color: var(--primary); font-weight: 700; }
        .header-btn { padding: 10px 24px; background: var(--primary); color: #fff; border-radius: 4px; font-size: 14px; }
        .header-btn:hover { background: var(--primary-light); color: #fff; }
        .mobile-toggle { display: none; font-size: 24px; cursor: pointer; }
        
        /* 页面主内容 */
        .main-content { padding-top: 130px; min-height: calc(100vh - 300px); }
        .page-wrap { padding: 30px 0 60px; }
        
        /* 通用区块 */
        .container { max-width: 1280px; margin: 0 auto; padding: 0 40px; }
        .container-sm { max-width: 1000px; margin: 0 auto; padding: 0 40px; }
        .section { padding: 100px 0; }
        .section-bg { background: var(--bg-light); }
        .section-header { text-align: center; max-width: 700px; margin: 0 auto 60px; }
        .section-tag { display: inline-block; padding: 6px 16px; background: rgba(0,82,217,0.1); color: var(--primary); border-radius: 20px; font-size: 14px; margin-bottom: 16px; }
        .section-title { font-size: 38px; font-weight: 700; color: var(--text-dark); margin-bottom: 16px; }
        .section-desc { font-size: 16px; color: var(--text-gray); }
        .more-btn { display: inline-flex; align-items: center; gap: 8px; padding: 14px 32px; background: var(--primary); color: #fff; border-radius: 4px; font-size: 15px; }
        .more-btn:hover { background: var(--primary-light); color: #fff; }
        
        /* 页面标题 */
        .page-title { font-size: 32px; font-weight: 700; color: var(--text-dark); text-align: center; margin-bottom: 20px; }
        
        /* 面包屑导航 */
        .crumbs { margin-bottom: 30px; font-size: 14px; color: var(--text-gray); }
        .crumbs a { color: var(--text-gray); }
        .crumbs a:hover { color: var(--primary); }
        
        /* 分类筛选 */
        .category-list { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 30px; justify-content: center; }
        .category-list a { padding: 8px 20px; background: var(--bg-white); color: var(--text-dark); border-radius: 20px; font-size: 14px; border: 1px solid #eee; }
        .category-list a:hover, .category-list a.active { background: var(--primary); color: #fff; border-color: var(--primary); }
        
        /* 网格布局 */
        .news-grid, .product-grid, .solution-grid, .image-grid, .case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
        .case-grid { grid-template-columns: repeat(4, 1fr); }
        
        /* 卡片样式 */
        .news-item, .product-item, .solution-item, .image-item, .case-item { background: var(--bg-white); border-radius: 12px; overflow: hidden; box-shadow: var(--shadow); transition: var(--transition); }
        .news-item:hover, .product-item:hover, .solution-item:hover, .image-item:hover, .case-item:hover { transform: translateY(-5px); box-shadow: var(--shadow-hover); }
        .news-item img, .product-item img, .solution-item img, .image-item img { width: 100%; height: 200px; object-fit: cover; }
        .product-item img { height: 180px; }
        .news-item .content, .product-item .content, .solution-item .content, .image-item .content { padding: 20px; }
        .news-item h3, .product-item h3, .solution-item h3, .image-item h3 { font-size: 16px; margin-bottom: 10px; color: var(--text-dark); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
        .news-item p, .solution-item p { font-size: 14px; color: var(--text-gray); line-height: 1.6; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .news-item .date { font-size: 13px; color: var(--text-light); margin-top: 10px; }
        .product-item .price { color: var(--primary); font-size: 18px; font-weight: 700; }
        .image-item .content h3 { text-align: center; }
        
        /* 案例样式 */
        .case-item { position: relative; aspect-ratio: 1; }
        .case-item::before { content: ''; position: absolute; inset: 0; background: linear-gradient(transparent 50%, rgba(0,0,0,0.7)); z-index: 1; }
        .case-item img { width: 100%; height: 100%; }
        .case-item:hover img { transform: scale(1.1); }
        .case-info { position: absolute; bottom: 0; left: 0; right: 0; padding: 20px; z-index: 2; color: #fff; }
        .case-info h4 { font-size: 16px; margin-bottom: 4px; }
        .case-info span { font-size: 12px; opacity: 0.8; }
        
        /* 详情页文章 */
        .article { background: var(--bg-white); padding: 40px; border-radius: 12px; box-shadow: var(--shadow); }
        .article-thumb { width: 100%; max-height: 400px; object-fit: cover; border-radius: 8px; margin-bottom: 30px; }
        .article-title { font-size: 28px; color: var(--text-dark); margin-bottom: 20px; text-align: center; }
        .article-meta { font-size: 14px; color: var(--text-light); margin-bottom: 30px; padding-bottom: 20px; border-bottom: 1px solid #eee; text-align: center; }
        .article-meta span { margin: 0 10px; }
        .article-content { font-size: 16px; line-height: 1.8; color: var(--text-dark); }
        .article-content p { margin-bottom: 15px; }
        .article-content img { max-width: 100%; height: auto; margin: 15px 0; border-radius: 8px; }
        .article-nav { display: flex; justify-content: space-between; margin-top: 40px; padding-top: 20px; border-top: 1px solid #eee; }
        .article-nav a { color: var(--primary); font-size: 14px; max-width: 45%; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
        .article-nav a:hover { color: var(--primary-light); }
        
        /* 相关推荐 */
        .related-title { font-size: 24px; color: var(--text-dark); margin: 50px 0 20px; text-align: center; }
        .related-list { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
        .related-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
        .related-item { background: var(--bg-white); border-radius: 8px; overflow: hidden; box-shadow: var(--shadow); transition: var(--transition); }
        .related-item:hover { transform: translateY(-5px); box-shadow: var(--shadow-hover); }
        .related-item img { width: 100%; height: 120px; object-fit: cover; }
        .related-item .title { padding: 12px; font-size: 14px; color: var(--text-dark); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
        .related-item .price { padding: 0 12px 12px; color: var(--primary); font-weight: 600; }
        
        /* 产品详情 */
        .product-detail { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; margin-bottom: 30px; }
        .product-image img { width: 100%; border-radius: 12px; }
        .product-info h1 { font-size: 24px; color: var(--text-dark); margin-bottom: 15px; }
        .product-info .price { font-size: 28px; color: var(--primary); font-weight: 700; margin-bottom: 20px; }
        .product-info .price .market { font-size: 16px; color: var(--text-light); text-decoration: line-through; margin-left: 10px; }
        .product-info .meta { font-size: 14px; color: var(--text-gray); margin-bottom: 8px; }
        .product-info .meta span { margin-right: 20px; }
        .product-content { font-size: 16px; line-height: 1.8; color: var(--text-dark); border-top: 1px solid #eee; padding-top: 30px; }
        .product-content p { margin-bottom: 15px; }
        .product-content img { max-width: 100%; height: auto; }
        
        /* 单页样式 */
        .page-wrap-narrow { max-width: 900px; margin: 0 auto; padding: 0 20px; }
        
        /* 图集样式 */
        .gallery { background: var(--bg-white); padding: 40px; border-radius: 12px; box-shadow: var(--shadow); }
        .gallery-title { font-size: 24px; color: var(--text-dark); margin-bottom: 20px; }
        .gallery-meta { font-size: 14px; color: var(--text-light); margin-bottom: 20px; }
        .gallery-meta span { margin-right: 20px; }
        .main-image { width: 100%; border-radius: 12px; margin-bottom: 20px; }
        .image-list { display: grid; grid-template-columns: repeat(4, 1fr); gap: 15px; margin-bottom: 30px; }
        .image-list img { width: 100%; height: 120px; object-fit: cover; border-radius: 8px; cursor: pointer; transition: var(--transition); }
        .image-list img:hover { transform: scale(1.05); }
        .image-list img.active { border: 2px solid var(--primary); }
        .gallery-content { font-size: 16px; line-height: 1.8; color: var(--text-dark); border-top: 1px solid #eee; padding-top: 20px; }
        .gallery-content p { margin-bottom: 15px; }
        
        /* 搜索页 */
        .search-form { display: flex; justify-content: center; margin-bottom: 30px; flex-wrap: wrap; gap: 10px; }
        .search-form input[type=text] { width: 300px; max-width: 100%; padding: 12px; border: 1px solid #ddd; border-radius: 4px; font-size: 14px; }
        .search-form button { padding: 12px 30px; background: var(--primary); color: #fff; border: none; border-radius: 4px; cursor: pointer; font-size: 14px; transition: var(--transition); }
        .search-form button:hover { background: var(--primary-light); }
        .search-form select { padding: 12px; border: 1px solid #ddd; border-radius: 4px; font-size: 14px; }
        .result-list { background: var(--bg-white); border-radius: 12px; overflow: hidden; box-shadow: var(--shadow); }
        .result-item { padding: 20px; border-bottom: 1px solid #eee; transition: var(--transition); }
        .result-item:hover { background: var(--bg-light); }
        .result-item:last-child { border-bottom: none; }
        .result-item h3 { font-size: 18px; margin-bottom: 10px; }
        .result-item h3 a { color: var(--text-dark); }
        .result-item h3 a:hover { color: var(--primary); }
        .result-item p { font-size: 14px; color: var(--text-gray); line-height: 1.6; }
        .result-item .meta { font-size: 12px; color: var(--text-light); margin-top: 8px; }
        .result-item .type { display: inline-block; padding: 2px 8px; background: rgba(0,82,217,0.1); color: var(--primary); border-radius: 4px; margin-right: 10px; font-size: 12px; }
        .no-result { text-align: center; padding: 60px 20px; color: var(--text-light); background: var(--bg-white); border-radius: 12px; box-shadow: var(--shadow); }
        
        /* 分页 */
        .pagination { display: flex; justify-content: center; gap: 8px; margin-top: 40px; }
        .pagination a, .pagination span { padding: 8px 14px; background: var(--bg-white); color: var(--text-dark); border-radius: 4px; font-size: 14px; }
        .pagination a:hover { background: var(--primary); color: #fff; }
        .pagination .current { background: var(--primary); color: #fff; }
        .pagination .disabled { color: var(--text-light); cursor: not-allowed; }
        
        /* 底部 */
        .footer { background: #111; color: #fff; }
        .footer-main { padding: 80px 0 40px; }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 60px; }
        .footer-logo { display: flex; align-items: center; gap: 12px; font-size: 22px; font-weight: 700; margin-bottom: 20px; }
        .footer-logo i { font-size: 32px; color: var(--primary-light); }
        .footer-desc { color: #888; font-size: 14px; line-height: 1.8; margin-bottom: 24px; }
        .footer-social { display: flex; gap: 12px; }
        .footer-social a { width: 40px; height: 40px; border: 1px solid #333; border-radius: 50%; display: flex; align-items: center; justify-content: center; color: #888; transition: var(--transition); }
        .footer-social a:hover { background: var(--primary); border-color: var(--primary); color: #fff; }
        .footer-col h4 { font-size: 16px; margin-bottom: 24px; color: #fff; }
        .footer-links { list-style: none; }
        .footer-links li { margin-bottom: 12px; }
        .footer-links a { color: #888; font-size: 14px; }
        .footer-links a:hover { color: var(--primary-light); padding-left: 8px; }
        .footer-contact li { display: flex; align-items: flex-start; gap: 12px; margin-bottom: 16px; color: #888; font-size: 14px; }
        .footer-contact i { color: var(--primary-light); margin-top: 4px; }
        .footer-bottom { border-top: 1px solid #222; padding: 24px 0; }
        .footer-bottom .container { display: flex; justify-content: space-between; align-items: center; font-size: 14px; color: #666; }
        .footer-bottom a { color: #888; }
        .footer-bottom a:hover { color: var(--primary-light); }
        .footer-links-bottom { display: flex; gap: 24px; }
        
        /* 动画 */
        .fade-up { opacity: 0; transform: translateY(30px); transition: all 0.6s ease; }
        .fade-up.visible { opacity: 1; transform: translateY(0); }

        /* 专题页横幅 */
        .page-banner { padding: 140px 0 80px; text-align: center; color: #fff; position: relative; overflow: hidden; }
        .page-banner::before { content: ''; position: absolute; top: 0; left: 0; right: 0; bottom: 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='0.05'%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") repeat; }
        .page-banner .container { position: relative; z-index: 1; }
        .page-banner h1 { font-size: 48px; font-weight: 700; margin-bottom: 16px; text-shadow: 0 2px 10px rgba(0,0,0,0.1); }
        .page-banner p { font-size: 18px; opacity: 0.9; max-width: 700px; margin: 0 auto; }
        .page-banner .banner-tags { margin-top: 24px; display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
        .page-banner .banner-tags span { background: rgba(255,255,255,0.2); padding: 6px 16px; border-radius: 20px; font-size: 14px; backdrop-filter: blur(4px); }
        
        /* 服务卡片 */
        .service-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
        .service-card-item { background: var(--bg-white); border-radius: 16px; padding: 40px 30px; text-align: center; box-shadow: var(--shadow); transition: var(--transition); border: 1px solid transparent; }
        .service-card-item:hover { transform: translateY(-8px); box-shadow: var(--shadow-hover); border-color: var(--primary); }
        .service-card-icon { width: 80px; height: 80px; background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%); border-radius: 20px; display: flex; align-items: center; justify-content: center; margin: 0 auto 24px; font-size: 36px; color: #fff; }
        .service-card-item h3 { font-size: 20px; margin-bottom: 12px; color: var(--text-dark); }
        .service-card-item p { font-size: 15px; color: var(--text-gray); line-height: 1.7; margin-bottom: 20px; }
        .btn { display: inline-flex; align-items: center; gap: 8px; padding: 12px 28px; background: var(--primary); color: #fff; border-radius: 6px; font-size: 14px; transition: var(--transition); border: none; cursor: pointer; }
        .btn:hover { background: var(--primary-light); color: #fff; transform: translateY(-2px); }
        .btn-outline { background: transparent; border: 2px solid var(--primary); color: var(--primary); }
        .btn-outline:hover { background: var(--primary); color: #fff; }
        .btn-lg { padding: 16px 40px; font-size: 16px; border-radius: 8px; }
        
        /* 简介卡片 */
        .intro-box { background: linear-gradient(135deg, #f8faff 0%, #eef2ff 100%); border-radius: 20px; padding: 50px; text-align: center; }
        .intro-box .section-title { color: var(--primary); margin-bottom: 24px; }
        .intro-text { background: var(--bg-white); border-radius: 16px; padding: 40px; box-shadow: var(--shadow); }
        
        /* 对比展示 */
        .comparison-box { display: flex; align-items: center; justify-content: center; gap: 40px; flex-wrap: wrap; margin-top: 40px; }
        .comparison-item { background: var(--bg-white); border-radius: 20px; padding: 40px; text-align: center; box-shadow: var(--shadow); width: 300px; }
        .comparison-item.before { border: 4px solid #ff6b6b; }
        .comparison-item.after { border: 4px solid #28a745; }
        .comparison-label { font-size: 20px; font-weight: 600; margin-bottom: 24px; color: var(--text-dark); }
        .comparison-image { display: flex; flex-direction: column; align-items: center; gap: 16px; color: #666; }
        .comparison-image i { font-size: 70px; }
        .comparison-image span { font-size: 14px; }
        .comparison-arrow { font-size: 48px; color: var(--primary); }
        
        /* 为什么清洗 */
        .why-list { display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px; }
        .why-item { background: var(--bg-white); border-radius: 20px; padding: 40px 25px; text-align: center; box-shadow: var(--shadow); transition: var(--transition); }
        .why-item:hover { transform: translateY(-8px); box-shadow: var(--shadow-hover); }
        .why-icon { width: 80px; height: 80px; border-radius: 50%; display: flex; align-items: center; justify-content: center; margin: 0 auto 24px; font-size: 36px; color: #fff; }
        .why-item h3 { font-size: 20px; margin-bottom: 12px; color: var(--text-dark); }
        .why-item p { font-size: 14px; color: #666; line-height: 1.7; }
        
        /* 服务流程 */
        .process-steps { display: flex; align-items: center; justify-content: center; gap: 20px; flex-wrap: wrap; }
        .process-step { display: flex; align-items: center; gap: 16px; background: var(--bg-white); padding: 24px 28px; border-radius: 16px; box-shadow: var(--shadow); flex: 1; min-width: 200px; }
        .step-number { font-size: 32px; font-weight: 700; color: var(--primary); background: rgba(0,82,217,0.1); padding: 12px 18px; border-radius: 12px; }
        .step-content h3 { font-size: 17px; margin-bottom: 6px; color: var(--text-dark); }
        .step-content p { font-size: 13px; color: #666; }
        .process-arrow { font-size: 28px; color: var(--primary); flex-shrink: 0; }
        
        /* CTA区域 */
        .cta-section { padding: 80px 0; }
        .cta-box { background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%); border-radius: 24px; padding: 80px 40px; text-align: center; color: #fff; position: relative; overflow: hidden; }
        .cta-box::before { content: ''; position: absolute; top: -50%; left: -50%; width: 200%; height: 200%; background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 60%); }
        .cta-box h2 { font-size: 36px; font-weight: 700; margin-bottom: 16px; position: relative; }
        .cta-box p { font-size: 18px; opacity: 0.9; margin-bottom: 32px; position: relative; }
        .cta-buttons { display: flex; gap: 20px; justify-content: center; flex-wrap: wrap; position: relative; }
        
        /* 相关服务 */
        .related-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
        .related-card { background: var(--bg-white); border-radius: 20px; padding: 40px 30px; text-align: center; box-shadow: var(--shadow); transition: var(--transition); text-decoration: none; border: 2px solid transparent; }
        .related-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-hover); border-color: var(--primary); }
        .related-icon { width: 80px; height: 80px; background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%); border-radius: 50%; display: flex; align-items: center; justify-content: center; margin: 0 auto 24px; font-size: 36px; color: #fff; }
        .related-card h3 { font-size: 18px; color: var(--text-dark); margin-bottom: 10px; }
        .related-card p { font-size: 14px; color: #666; margin-bottom: 16px; }
        .related-more { color: var(--primary); font-size: 14px; font-weight: 500; }
        
        /* 专题页专属动画 */
        .banner-icon { animation: float 3s ease-in-out infinite; }
        @keyframes float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-15px); } }
        
        /* 移动端底部快捷导航 */
        .mobile-bottom-nav {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            background: rgba(255,255,255,0.98);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-top: 1px solid #eee;
            z-index: 9999;
            padding: 8px 0;
            padding-bottom: calc(8px + env(safe-area-inset-bottom, 0px));
            box-shadow: 0 -4px 20px rgba(0,0,0,0.08);
        }
        .mobile-bottom-nav.show { display: flex; justify-content: space-around; }
        .mobile-bottom-nav a {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 4px;
            padding: 6px 12px;
            color: #666;
            text-decoration: none;
            transition: all 0.3s;
            position: relative;
        }
        .mobile-bottom-nav a i {
            font-size: 20px;
            transition: all 0.3s;
        }
        .mobile-bottom-nav a span {
            font-size: 11px;
            font-weight: 500;
        }
        .mobile-bottom-nav a:hover,
        .mobile-bottom-nav a.active {
            color: var(--primary);
        }
        .mobile-bottom-nav a:hover i,
        .mobile-bottom-nav a.active i {
            transform: scale(1.1);
        }
        .mobile-bottom-nav a.active::before {
            content: '';
            position: absolute;
            top: -8px;
            left: 50%;
            transform: translateX(-50%);
            width: 30px;
            height: 3px;
            background: var(--primary);
            border-radius: 0 0 3px 3px;
        }
        .mobile-bottom-nav .nav-home i { font-size: 22px; }
        
        /* 返回顶部按钮 */
        .back-to-top {
            position: fixed;
            bottom: 100px;
            right: 20px;
            width: 48px;
            height: 48px;
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            z-index: 998;
            opacity: 0;
            visibility: hidden;
            transition: all 0.4s;
            box-shadow: 0 4px 20px rgba(0,82,217,0.3);
            font-size: 18px;
        }
        .back-to-top.show {
            opacity: 1;
            visibility: visible;
        }
        .back-to-top:hover {
            transform: translateY(-4px);
            box-shadow: 0 8px 30px rgba(0,82,217,0.4);
        }
        
        /* 页面加载动画 */
        .page-loading {
            position: fixed;
            inset: 0;
            background: linear-gradient(135deg, #f8faff 0%, #eef2ff 100%);
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            z-index: 99999;
            transition: opacity 0.5s, visibility 0.5s;
        }
        .page-loading.hidden {
            opacity: 0;
            visibility: hidden;
        }
        .page-loading .loader {
            width: 50px;
            height: 50px;
            border: 4px solid rgba(0,82,217,0.1);
            border-top-color: var(--primary);
            border-radius: 50%;
            animation: spin 1s linear infinite;
        }
        .page-loading .loading-text {
            margin-top: 20px;
            font-size: 14px;
            color: var(--primary);
            font-weight: 600;
            letter-spacing: 2px;
        }
        @keyframes spin {
            to { transform: rotate(360deg); }
        }
        
        /* 移动端悬浮搜索框 */
        .mobile-search-btn {
            display: none;
            position: fixed;
            top: 80px;
            left: 50%;
            transform: translateX(-50%);
            width: calc(100% - 40px);
            max-width: 400px;
            background: #fff;
            border-radius: 50px;
            padding: 12px 20px;
            box-shadow: 0 4px 20px rgba(0,0,0,0.1);
            z-index: 998;
            align-items: center;
            gap: 12px;
            cursor: pointer;
        }
        .mobile-search-btn.show { display: flex; }
        .mobile-search-btn i { color: var(--primary); font-size: 16px; }
        .mobile-search-btn span { font-size: 14px; color: #999; flex: 1; }
        
        /* 移动端触摸优化 */
        @media (max-width: 768px) {
            /* 主内容增加底部padding给底部导航 */
            .main-content { 
                padding-bottom: 80px !important; 
            }
            
            /* 调整头部为简洁模式 */
            .header-top { display: none; }
            .header-wrap { 
                height: 56px;
                background: rgba(255,255,255,0.98);
                backdrop-filter: blur(10px);
                -webkit-backdrop-filter: blur(10px);
            }
            .header { box-shadow: 0 2px 10px rgba(0,0,0,0.05); }
            
            /* 优化移动端卡片间距 */
            .news-grid, .product-grid, .solution-grid, .case-grid { 
                gap: 16px; 
            }
            .news-item, .product-item, .solution-item, .case-item { 
                border-radius: 16px; 
            }
            
            /* 优化文章详情 */
            .article { 
                padding: 20px; 
                border-radius: 16px; 
            }
            .article-title { font-size: 22px; }
            
            /* 优化分页 */
            .pagination a, .pagination span { 
                padding: 10px 12px; 
                font-size: 13px; 
            }
            
            /* 隐藏PC端header-phone按钮 */
            .header-right .header-phone { display: none; }
            .header-right .header-btn { display: none; }
            
            /* 优化底部footer */
            .footer-grid { 
                grid-template-columns: 1fr; 
                gap: 30px; 
            }
            .footer-bottom .container { 
                flex-direction: column; 
                gap: 16px; 
                text-align: center; 
            }
            
            /* 调整CTA按钮 */
            .cta-box { 
                padding: 40px 24px; 
                border-radius: 20px; 
            }
            .cta-icon { 
                width: 70px; 
                height: 70px; 
                font-size: 32px; 
            }
            .cta-content h2 { font-size: 22px; }
            .cta-content p { font-size: 14px; }
            
            /* 返回顶部按钮位置调整 */
            .back-to-top { 
                bottom: 90px; 
                right: 16px; 
                width: 44px; 
                height: 44px; 
            }
            
            /* 隐藏移动端不必要的大图 */
            .article-thumb { 
                max-height: 200px; 
            }
            
            /* 优化图片列表 */
            .image-list { 
                grid-template-columns: repeat(3, 1fr); 
                gap: 8px; 
            }
            .image-list img { 
                height: 80px; 
            }
            
            /* 相关推荐调整 */
            .related-list, .related-grid { 
                grid-template-columns: repeat(2, 1fr); 
                gap: 12px; 
            }
            .related-item img { 
                height: 80px; 
            }
            
            /* 优化产品详情 */
            .product-detail { 
                grid-template-columns: 1fr; 
                gap: 20px; 
            }
            .product-image img { 
                border-radius: 12px; 
            }
            .product-info .price { 
                font-size: 24px; 
            }
        }
        
        /* 极小屏幕优化 */
        @media (max-width: 375px) {
            .container { padding: 0 12px !important; }
            .section-title { font-size: 24px; }
            .section { padding: 60px 0; }
        }