/* --- 承袭详情页核心变量与极简响应式基础样式 --- */
        :root {
            --primary-color: #0056b3;
            --secondary-color: #ff6600;
            --text-dark: #333333;
            --bg-light: #f8f9fa;
            --border-color: #e0e0e0;
        }
        * { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; scroll-padding-top: 130px; } 
        body { font-family: "Helvetica Neue", Helvetica, Arial, "Microsoft YaHei", sans-serif; line-height: 1.6; color: var(--text-dark); background-color: #fff; -webkit-font-smoothing: antialiased; }
        img { max-width: 100%; height: auto; display: block; }
        .container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 20px; }
        .btn { display: inline-block; background: var(--secondary-color); color: #fff; padding: 10px 25px; text-decoration: none; border-radius: 4px; font-weight: bold; transition: background 0.3s; text-align: center; font-size: 0.95rem; }
        .btn:hover { background: #e05500; }

        /* --- 保持不变的 Header 布局 --- */
        header { background: #fff; box-shadow: 0 2px 10px rgba(0,0,0,0.05); position: sticky; top: 0; z-index: 1000; }
        .header-top { display: flex; justify-content: space-between; align-items: center; padding: 15px 0; border-bottom: 1px solid #f1f3f5; }
        .logo { flex: 0 0 auto; }
		        .bt { font-size: 1.5rem; color: var(--primary-color); line-height: 1.2; font-weight: 700; }
		.logo a {text-decoration: none;}
        .logo h1 { font-size: 1.5rem; color: var(--primary-color); line-height: 1.2; font-weight: 700; }
        .logo span { font-size: 0.85rem; color: #666; display: block; margin-top: 4px; letter-spacing: 1px; }
        .header-rt { text-align: right; flex: 0 0 auto; }
        .hotline { font-size: 1.4rem; color: var(--secondary-color); font-weight: bold; text-decoration: none; display: block; }
        .main-nav { background: #fff; padding: 10px 0; display: block; }
        .nav-list { display: flex; list-style: none; gap: 40px; justify-content: center; align-items: center; }
        .nav-list a { text-decoration: none; color: #495057; font-weight: 500; font-size: 1.05rem; transition: all 0.2s; padding: 5px 0; white-space: nowrap; }
        .nav-list a:hover, .nav-list .active { color: var(--primary-color); border-bottom: 2px solid var(--primary-color); }
        .menu-toggle, .menu-btn { display: none; }

        /* --- 新增：面包屑导航 (SEO友好) --- */
        .breadcrumb { background: var(--bg-light); padding: 12px 0; border-bottom: 1px solid var(--border-color); font-size: 0.9rem; }
        .breadcrumb-list { display: flex; list-style: none; gap: 8px; color: #6c757d; }
        .breadcrumb-list a { color: #495057; text-decoration: none; }
        .breadcrumb-list a:hover { color: var(--primary-color); text-decoration: underline; }
        .breadcrumb-list li:not(:last-child)::after { content: '/'; margin-left: 8px; color: #adb5bd; }
        .breadcrumb-list li:last-child { color: var(--primary-color); font-weight: 500; }

        /* --- 新增：分类筛选器栏目 --- */
        .filter-section { padding: 30px 0 10px; background: #fff; }
        .filter-box { border: 1px solid var(--border-color); border-radius: 6px; padding: 15px 20px; background: #fff; }
        .filter-row { display: flex; padding: 10px 0; border-bottom: 1px dashed #f1f3f5; align-items: flex-start; }
        .filter-row:last-child { border-bottom: none; }
        .filter-label { font-weight: bold; color: #212529; min-width: 90px; padding-top: 4px; font-size: 0.95rem; }
        .filter-options { display: flex; flex-wrap: wrap; gap: 10px; list-style: none; }
        .filter-options a { text-decoration: none; color: #495057; padding: 4px 12px; border-radius: 4px; font-size: 0.9rem; transition: all 0.2s; }
        .filter-options a:hover { color: var(--primary-color); background: #e9ecef; }
        .filter-options .active { background: var(--primary-color); color: #fff !important; font-weight: 500; }

        /* --- 新增：产品列表混合图文布局 --- */
        .product-list-section { padding: 30px 0 60px; background: #fff; }
        .list-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; padding-bottom: 10px; border-bottom: 2px solid var(--primary-color); }
        .list-header h2 { font-size: 1.3rem; color: #111; }
        .list-header h2 span { color: var(--secondary-color); font-size: 1.4rem; font-weight: bold; margin: 0 4px; }
        .sort-box { font-size: 0.9rem; color: #666; }

        .product-list { display: flex; flex-direction: column; gap: 25px; }
        .product-item-card { display: flex; border: 1px solid var(--border-color); border-radius: 8px; overflow: hidden; background: #fff; transition: all 0.3s; }
        .product-item-card:hover { transform: translateY(-3px); box-shadow: 0 8px 20px rgba(0,0,0,0.08); border-color: #b3d7ff; }
        
        .prod-item-img { flex: 0 0 320px; background: #e9ecef; position: relative; display: flex; align-items: center; justify-content: center; overflow: hidden; min-height: 220px; }
        .prod-item-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s; }
        .product-item-card:hover .prod-item-img img { transform: scale(1.05); }
        .prod-item-badge { position: absolute; top: 12px; left: 12px; background: rgba(0, 86, 179, 0.9); color: #fff; font-size: 0.8rem; padding: 3px 10px; border-radius: 3px; font-weight: 500; }
        
        .prod-item-info { flex: 1; padding: 25px; display: flex; flex-direction: column; justify-content: space-between; }
        .prod-item-title-row { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 12px; }
        .prod-item-title-row h3 { font-size: 1.4rem; color: #111; }
        .prod-item-title-row h3 a { color: #111; text-decoration: none; transition: color 0.2s; }
        .prod-item-title-row h3 a:hover { color: var(--primary-color); }
        
        .prod-item-desc { font-size: 0.95rem; color: #666; line-height: 1.6; margin-bottom: 15px; text-align: justify; }
        
        .prod-item-specs { display: flex; flex-wrap: wrap; gap: 15px 30px; background: var(--bg-light); padding: 12px 20px; border-radius: 6px; margin-bottom: 20px; }
        .spec-meta { font-size: 0.9rem; color: #495057; }
        .spec-meta strong { color: #111; font-weight: 600; }
        
        .prod-item-action { display: flex; gap: 15px; align-items: center; }
        .btn-outline { background: #fff; color: var(--primary-color); border: 1px solid var(--primary-color); }
        .btn-outline:hover { background: #e8f4ff; }

        /* --- 新增：企业级标准分页器 --- */
        .pagination { display: flex; justify-content: center; align-items: center; gap: 8px; margin-top: 45px; list-style: none; }
        .pagination a { text-decoration: none; color: #495057; padding: 8px 16px; border: 1px solid var(--border-color); border-radius: 4px; font-size: 0.9rem; transition: all 0.2s; }
        .pagination a:hover { border-color: var(--primary-color); color: var(--primary-color); }
        .pagination .active a { background: var(--primary-color); color: #fff; border-color: var(--primary-color); }
        .pagination .disabled a { color: #ced4da; border-color: #e9ecef; cursor: not-allowed; pointer-events: none; }

        /* --- 保持不变的 Footer 样式 --- */
        footer { background: #212529; color: #b5b9bd; padding: 40px 0; text-align: center; font-size: 0.9rem; line-height: 1.8; margin-top: auto; }
        footer p { margin-bottom: 8px; }
        footer p strong { color: #fff; }
        footer a { color: #fff; text-decoration: none; }
        footer a:hover { text-decoration: underline; }

        /* --- 严格同步的响应式适配断点 --- */
        @media (max-width: 992px) {
            .nav-list { gap: 20px; }
            .logo h1 { font-size: 1.3rem; }
            .hotline { font-size: 1.2rem; }
            .prod-item-img { flex: 0 0 260px; }
        }

        @media (max-width: 768px) {
            html { scroll-padding-top: 90px; }
            .header-top { padding: 10px 0; position: relative; }
            .logo h1 { font-size: 1.1rem; }
            .logo span { font-size: 0.75rem; letter-spacing: 0; }
            .header-rt { margin-right: 45px; text-align: right; }
            .hotline { font-size: 1rem; }
            
            .menu-btn { display: block; position: absolute; right: 20px; top: 50%; transform: translateY(-50%); cursor: pointer; padding: 10px 0; z-index: 1002; }
            .menu-btn .icon-bar { display: block; width: 22px; height: 2px; background: #333; margin: 4px 0; transition: all 0.2s; }
            
            .main-nav { display: block; position: absolute; top: 100%; left: 0; right: 0; background: #fff; border-top: 1px solid var(--border-color); border-bottom: 2px solid var(--primary-color); max-height: 0; overflow: hidden; opacity: 0; transition: all 0.3s ease-in-out; padding: 0; }
            .nav-list { flex-direction: column; gap: 0; width: 100%; padding: 10px 0; }
            .nav-list li { width: 100%; text-align: center; }
            .nav-list a { display: block; padding: 12px 0; font-size: 1rem; border-bottom: 1px solid #f8f9fa; }
            .nav-list li:last-child a { border-bottom: none; }
            .nav-list a:hover { border-bottom: none; background: var(--bg-light); }
            
            .menu-toggle:checked ~ .main-nav { max-height: 400px; opacity: 1; }
            .menu-toggle:checked ~ .menu-btn .icon-bar:nth-child(1) { transform: translateY(6px) rotate(45deg); }
            .menu-toggle:checked ~ .menu-btn .icon-bar:nth-child(2) { opacity: 0; }
            .menu-toggle:checked ~ .menu-btn .icon-bar:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

            /* 列表特有移动端优化 */
            .filter-box { padding: 10px 15px; }
            .filter-label { min-width: 70px; font-size: 0.85rem; }
            .filter-options a { padding: 2px 8px; font-size: 0.85rem; }
            
            .product-item-card { flex-direction: column; }
            .prod-item-img { flex: 0 0 auto; height: 200px; width: 100%; }
            .prod-item-info { padding: 15px; }
            .prod-item-title-row h3 { font-size: 1.2rem; }
            .prod-item-desc { font-size: 0.88rem; margin-bottom: 12px; }
            .prod-item-specs { padding: 10px; gap: 8px 15px; margin-bottom: 15px; }
            .spec-meta { font-size: 0.82rem; }
            .prod-item-action { flex-direction: column; gap: 10px; }
            .prod-item-action .btn { width: 100%; }
            
            .pagination a { padding: 6px 12px; font-size: 0.85rem; }
        }

        @media (max-width: 414px) {
            .header-rt p { display: none; }
            .logo h1 { font-size: 1rem; }
        }