/* =========================================
           1. 面包屑导航
        ========================================= */
        .breadcrumb-bar { background-color: var(--bg-gray); padding: 15px 0; border-bottom: 1px solid var(--border-color); font-size: 0.9rem; color: var(--text-light); }
        .breadcrumb-bar a { color: var(--text-light); transition: var(--transition); text-decoration: none; }
        .breadcrumb-bar a:hover { color: var(--auth-blue); }
        .breadcrumb-bar span { color: var(--auth-blue); font-weight: 700; }

        /* =========================================
           2. 产品首屏区 (Hero Section)
        ========================================= */
        .pdp-hero { padding: 50px 0; background-color: var(--white); }
        .pdp-hero-inner { display: grid; grid-template-columns: 1.1fr 1fr; gap: 60px; align-items: start; }
        
        .pdp-gallery { display: flex; flex-direction: column; gap: 15px; position: sticky; top: 100px; }
        .gallery-main-img { border-radius: 8px; overflow: hidden; border: 1px solid var(--border-color); height: 450px; background-color: var(--bg-gray); display: flex; align-items: center; justify-content: center; }
        .gallery-main-img img { width: 100%; height: 100%; object-fit: cover; transition: opacity 0.3s ease; }
        .gallery-thumbnails { display: grid; grid-template-columns: repeat(4, 1fr); gap: 15px; }
        .thumb-item { height: 90px; border-radius: 6px; overflow: hidden; border: 2px solid transparent; cursor: pointer; transition: var(--transition); background-color: var(--bg-gray); }
        .thumb-item img { width: 100%; height: 100%; object-fit: cover; opacity: 0.7; transition: var(--transition); }
        .thumb-item:hover img, .thumb-item.active img { opacity: 1; }
        .thumb-item.active { border-color: var(--warn-yellow); box-shadow: 0 4px 10px rgba(245, 158, 11, 0.2); }

        .pdp-badges { display: flex; gap: 10px; margin-bottom: 15px; flex-wrap: wrap; }
        .badge { padding: 5px 12px; border-radius: 4px; font-size: 0.85rem; font-weight: 700; }
        .badge-green { background-color: rgba(5, 150, 105, 0.1); color: var(--eco-green); }
        .badge-blue { background-color: rgba(30, 58, 138, 0.1); color: var(--auth-blue); }
        
        .pdp-title { font-size: 2.2rem; color: var(--auth-blue); font-weight: 900; margin-bottom: 15px; line-height: 1.3; }
        .pdp-short-desc { font-size: 1.05rem; color: var(--text-light); line-height: 1.7; margin-bottom: 30px; }
        
        .pdp-quick-specs { background-color: var(--bg-gray); padding: 25px; border-radius: 8px; border-left: 4px solid var(--auth-blue); margin-bottom: 35px; }
        .q-spec-item { margin-bottom: 12px; font-size: 1rem; display: flex; align-items: flex-start; }
        .q-spec-item:last-child { margin-bottom: 0; }
        .q-spec-item span { color: var(--text-light); width: 100px; flex-shrink: 0; }
        .q-spec-item strong { color: var(--text-main); font-weight: 700; }

        .pdp-actions { display: flex; flex-direction: column; gap: 15px; }
        .action-price-hint { font-size: 0.9rem; color: var(--warn-yellow-hover); font-weight: 700; display: flex; align-items: center; gap: 8px; }
        .action-price-hint::before { content: ''; display: inline-block; width: 6px; height: 6px; background-color: var(--warn-yellow-hover); border-radius: 50%; }
        .btn-group { display: flex; gap: 15px; }
        .action-btn { flex: 1; }
        .action-contact { margin-top: 10px; font-size: 1rem; color: var(--auth-blue); font-weight: 500; display: flex; align-items: center; gap: 8px; }
        .action-contact strong { font-size: 1.3rem; font-weight: 900; letter-spacing: 1px; }

        /* =========================================
           3. 吸顶导航与内容区块
        ========================================= */
        .pdp-sticky-nav { background-color: var(--white); border-bottom: 1px solid var(--border-color); border-top: 1px solid var(--border-color); position: sticky; top: 85px; z-index: 990; box-shadow: 0 4px 10px rgba(0,0,0,0.02); transition: all 0.3s ease; }
        .pdp-sticky-nav .sticky-nav-inner { display: flex; gap: 40px; align-items: center; overflow-x: auto; white-space: nowrap; padding: 0 24px; scrollbar-width: none; }
        .pdp-sticky-nav a:not(.btn) { color: var(--text-main); font-weight: 700; font-size: 1.05rem; padding: 20px 0; border-bottom: 3px solid transparent; transition: var(--transition); text-decoration: none;}
        .pdp-sticky-nav a:not(.btn).active, .pdp-sticky-nav a:not(.btn):hover { color: var(--auth-blue); border-bottom-color: var(--eco-green); }
        .float-right { margin-left: auto; }

        .pdp-content-area { background-color: var(--white); padding-bottom: 80px; }
        .pdp-section { padding: 80px 0; border-bottom: 1px solid var(--border-color); }
        .pdp-section:last-child { border-bottom: none; }
        .pdp-section-title { font-size: 2rem; color: var(--auth-blue); font-weight: 900; margin-bottom: 50px; text-align: center; position: relative; }
        .pdp-section-title::after { content: ''; position: absolute; bottom: -15px; left: 50%; transform: translateX(-50%); width: 60px; height: 4px; background-color: var(--eco-green); border-radius: 2px; }
        
        .bg-light { background-color: var(--bg-gray); }
        .bg-dark-blue { background-color: var(--auth-blue-dark); color: var(--white); }
        .bg-dark-blue .pdp-section-title { color: var(--white); }

        /* 内容编辑器排版 */
        .editor-content { font-size: 1.1rem; line-height: 1.9; color: var(--text-main); }
        .editor-content p { margin-bottom: 25px; }
        .editor-content img { max-width: 100%; height: auto; border-radius: 8px; margin: 25px auto; box-shadow: 0 5px 20px rgba(0,0,0,0.05); display: block; }
        .editor-content h2 { font-size: 1.5rem; color: var(--auth-blue); font-weight: 900; margin: 40px 0 20px; padding-left: 15px; border-left: 5px solid var(--warn-yellow); }

        /* 视频与参数表 */
        .video-wrapper { max-width: 900px; margin: 0 auto; position: relative; border-radius: 12px; overflow: hidden; box-shadow: 0 20px 50px rgba(0,0,0,0.3); border: 4px solid rgba(255,255,255,0.1); background: #000; aspect-ratio: 16/9; }
        .video-wrapper video { width: 100%; height: 100%; object-fit: cover; }
        .video-features { display: flex; justify-content: center; gap: 40px; margin-top: 40px; flex-wrap: wrap; }
        .v-feat { display: flex; align-items: center; gap: 10px; font-size: 1.1rem; font-weight: 700; color: var(--warn-yellow); }

        .table-responsive { overflow-x: auto; margin-top: 30px; }
        .b2b-specs-table { width: 100%; border-collapse: collapse; background-color: var(--white); box-shadow: 0 5px 15px rgba(0,0,0,0.03); border-radius: 8px; overflow: hidden; }
        .b2b-specs-table th, .b2b-specs-table td { padding: 16px 20px; border: 1px solid var(--border-color); text-align: left; }
        .b2b-specs-table td:first-child { width: 35%; background-color: #f8fafc; font-weight: 700; color: var(--auth-blue); }
        .table-group-header { background-color: var(--auth-blue) !important; color: var(--white) !important; font-size: 1.1rem; padding: 12px 20px !important; border: none !important; }

        /* 【恢复与优化】：相关推荐网格布局 */
        .list-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
        .list-card { background: var(--white); border: 1px solid var(--border-color); border-radius: 8px; overflow: hidden; transition: var(--transition); display: flex; flex-direction: column; }
        .list-card:hover { transform: translateY(-8px); box-shadow: 0 15px 30px rgba(30, 58, 138, 0.08); border-color: var(--auth-blue); }
        .list-card-img { height: 220px; position: relative; background-color: #f1f5f9; overflow: hidden; display: block; }
        .list-card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
        .list-card:hover .list-card-img img { transform: scale(1.05); }
        .list-card-info { padding: 25px; flex-grow: 1; display: flex; flex-direction: column; }
        
        /* 【核心修复】：标题智能两行截断 */
        .list-card-info h3 { font-size: 1.15rem; color: var(--auth-blue); font-weight: 800; margin-bottom: 10px; line-height: 1.4; display: -webkit-box; -webkit-box-orient: vertical; -webkit-line-clamp: 2; overflow: hidden; }
        .list-card-info h3 a { color: var(--auth-blue); text-decoration: none; }
        .list-card-info h3 a:hover { color: var(--warn-yellow); }
        
        /* 【核心修复】：简介严格两行截断，拒绝文字臃肿 */
        .list-card-info .card-desc { font-size: 0.9rem; color: var(--text-light); line-height: 1.6; margin-bottom: 20px; display: -webkit-box; -webkit-box-orient: vertical; -webkit-line-clamp: 2; overflow: hidden; flex-grow: 1; }
        
        .tag-hot { position: absolute; top: 15px; left: 15px; background-color: #ef4444; color: var(--white); padding: 4px 10px; font-size: 0.8rem; font-weight: 700; border-radius: 4px; z-index: 2; }
        .list-actions { margin-top: auto; }

        /* =========================================
           4. 【核心修复】：弹窗与侧边栏兜底防丢 CSS 
           （直接写在这里，防止 foot.php 调用失效）
        ========================================= */
        .pc-float-bar { position: fixed; right: 20px; top: 50%; transform: translateY(-50%); display: flex; flex-direction: column; gap: 10px; z-index: 9999; }
        .float-item { width: 50px; height: 50px; background-color: var(--white); border: 1px solid var(--border-color); border-radius: 6px; display: flex; align-items: center; justify-content: center; cursor: pointer; box-shadow: 0 4px 10px rgba(0,0,0,0.05); position: relative; transition: var(--transition); }
        .float-item i { font-size: 1.4rem; color: var(--auth-blue); transition: var(--transition); }
        .float-item:hover { background-color: var(--auth-blue); border-color: var(--auth-blue); }
        .float-item:hover i { color: var(--white); }
        .float-popup { position: absolute; right: 65px; top: 50%; transform: translateY(-50%) translateX(20px); background-color: var(--white); border: 1px solid var(--border-color); box-shadow: 0 10px 25px rgba(0,0,0,0.1); border-radius: 6px; padding: 20px; opacity: 0; visibility: hidden; transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275); white-space: nowrap; text-align: center; pointer-events: none; }
        .float-item:hover .float-popup { opacity: 1; visibility: visible; transform: translateY(-50%) translateX(0); }
        .popup-arrow { position: absolute; right: -6px; top: 50%; transform: translateY(-50%) rotate(45deg); width: 12px; height: 12px; background-color: var(--white); border-top: 1px solid var(--border-color); border-right: 1px solid var(--border-color); }
        .phone-popup strong { display: block; color: var(--warn-yellow); font-size: 1.5rem; font-weight: 900; margin-bottom: 5px; }
        .phone-popup span, .wechat-popup span { color: var(--text-main); font-size: 0.9rem; font-weight: 700; }

        .quote-modal-overlay { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background-color: rgba(15, 23, 42, 0.7); backdrop-filter: blur(4px); z-index: 100000; display: flex; align-items: center; justify-content: center; opacity: 0; visibility: hidden; transition: all 0.3s ease; }
        .quote-modal-overlay.active { opacity: 1; visibility: visible; }
        .quote-modal-content { background-color: var(--white); width: 90%; max-width: 500px; border-radius: 8px; padding: 40px; position: relative; transform: translateY(30px) scale(0.95); transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275); box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5); border-top: 6px solid var(--warn-yellow); box-sizing: border-box; margin: auto; }
        .quote-modal-overlay.active .quote-modal-content { transform: translateY(0) scale(1); }
        .close-modal-btn { position: absolute; top: 15px; right: 20px; font-size: 2rem; color: var(--text-light); cursor: pointer; line-height: 1; transition: color 0.3s ease; }
        .close-modal-btn:hover { color: #ef4444; }
        .modal-header-box { margin-bottom: 25px; text-align: center; }
        .modal-header-box h3 { font-size: 1.6rem; color: var(--auth-blue); font-weight: 900; margin-bottom: 10px; }
        .modal-header-box p { font-size: 0.95rem; color: var(--text-light); line-height: 1.6; margin: 0;}
        
        .input-icon-wrapper { position: relative; margin-bottom: 18px; width: 100%; }
        .input-icon-wrapper i { position: absolute; left: 18px; top: 18px; color: #94a3b8; font-size: 1.1rem; transition: color 0.3s cubic-bezier(0.4, 0, 0.2, 1); z-index: 2; pointer-events: none; }
        .input-icon-wrapper .enhanced-input { width: 100%; padding: 16px 16px 16px 48px; border: 1px solid #cbd5e1; border-radius: 4px; font-family: inherit; font-size: 1rem; color: var(--text-main); background-color: #f8fafc; transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1); margin-bottom: 0; box-sizing: border-box;}
        .input-icon-wrapper .enhanced-textarea { resize: vertical; min-height: 110px; padding-top: 16px; }
        .input-icon-wrapper .enhanced-input:focus { outline: none; border-color: var(--auth-blue); background-color: var(--white); box-shadow: 0 0 0 3px rgba(30, 58, 138, 0.15); }
        .input-icon-wrapper:focus-within i { color: var(--auth-blue); }
        .modal-secure-text { text-align: center; font-size: 0.85rem; color: #94a3b8; margin-top: 15px; display: flex; align-items: center; justify-content: center; gap: 6px; }
        .modal-secure-text i { color: var(--eco-green); }


        /* =========================================
           5. 响应式布局适配
        ========================================= */
        @media (max-width: 1250px) and (min-width: 769px) {
            .pdp-hero-inner { gap: 40px; }
            .gallery-main-img { height: 380px; }
        }
        @media (max-width: 1024px) {
            .pdp-hero-inner { grid-template-columns: 1fr; }
            .pdp-gallery { position: static; }
            .gallery-main-img { height: 500px; }
            .list-grid { grid-template-columns: repeat(2, 1fr); }
            .pdp-sticky-nav .float-right { display: none; }
        }
        @media (max-width: 768px) {
            .gallery-main-img { height: 300px; }
            .thumb-item { height: 70px; }
            .btn-group { flex-direction: column; }
            .list-grid { grid-template-columns: 1fr; }
            .video-features { flex-direction: column; gap: 15px; align-items: center; }
            .pdp-section { padding: 50px 0; }
            .pdp-title { font-size: 1.8rem; }
            .mobile-sticky-bar { display: block; }
            .footer-section { padding-bottom: 80px; }
            .pc-float-bar { display: none; }
        }