:root {
            --primary-blue: #0066cc;
            --primary-dark: #004999;
            --primary-light: #e6f0ff;
            --accent-blue: #0077ed;
            --gradient-blue: linear-gradient(135deg, #0066cc 0%, #004999 100%);
            --text-dark: #1e2a3a;
            --text-gray: #4a5a6e;
            --bg-light: #f8faff;
            --border-light: #e1e9f2;
            --border-color: #d0ddee;
            --radius: 8px;
            --container-width: 1480px;
            --shadow-sm: 0 4px 12px rgba(0,102,204,0.08);
            --shadow-hover: 0 12px 24px -8px rgba(0,102,204,0.2);
        }

        body { 
            margin: 0; 
            background: #ffffff; 
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; 
            color: var(--text-dark); 
            line-height: 1.5; 
        }
        
        .container-wide { 
            max-width: var(--container-width); 
            margin: 0 auto; 
            padding: 0 30px; 
            box-sizing: border-box; 
        }

        /* ===== 产品主区布局 ===== */
        .product-hero { 
            display: flex; 
            gap: 50px; 
            margin: 40px 0 60px; 
            align-items: flex-start; 
        }
        
        .product-gallery { 
            width: 520px; 
            flex-shrink: 0; 
        } 
        
        .product-info { 
            flex-grow: 1; 
            min-width: 0; 
        }

        /* ===== 放大镜效果 ===== */
        .main-stage { 
            width: 100%; 
            aspect-ratio: 1; 
            border: 1px solid var(--border-color); 
            border-radius: var(--radius); 
            overflow: hidden; 
            background: #fff; 
            cursor: zoom-in; 
            margin-bottom: 16px;
            box-shadow: var(--shadow-sm);
            position: relative;
        }
        .main-stage img { 
            width: 100%; 
            height: 100%; 
            object-fit: contain; 
            transition: transform 0.3s; 
        }
        .main-stage.zoomed img { 
            transform: scale(2.2); 
        }

        /* ===== 优化后的缩略图区域 ===== */
        .gallery-thumb-wrapper {
            position: relative;
            display: flex;
            align-items: center;
            gap: 8px;
            margin-top: 10px;
        }
        .thumb-scroll-container {
            flex: 1;
            overflow: hidden;
            position: relative;
            border-radius: var(--radius);
        }
        .thumb-grid { 
            display: flex; 
            gap: 10px; 
            list-style: none; 
            padding: 0; 
            margin: 0; 
            overflow-x: auto;
            scroll-behavior: smooth;
            scrollbar-width: thin;
            scrollbar-color: var(--primary-blue) var(--border-light);
            padding-bottom: 4px; /* 给滚动条留空间 */
        }
        .thumb-grid::-webkit-scrollbar {
            height: 5px;
        }
        .thumb-grid::-webkit-scrollbar-thumb {
            background: var(--primary-blue);
            border-radius: 10px;
        }
        .thumb-grid li { 
            flex: 0 0 88px; 
            height: 88px; 
            border: 2px solid transparent; 
            border-radius: 6px; 
            cursor: pointer; 
            transition: 0.2s; 
            overflow: hidden;
            background: #fff;
        }
        .thumb-grid li.on { 
            border-color: var(--primary-blue); 
            transform: translateY(-2px);
            box-shadow: 0 6px 12px rgba(0,102,204,0.15);
        }
        .thumb-grid img { 
            width: 100%; 
            height: 100%; 
            object-fit: cover; 
        }

        /* 箭头样式（用于切换主图） */
        .thumb-arrow {
            width: 36px;
            height: 36px;
            background: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            cursor: pointer;
            color: var(--primary-blue);
            font-size: 18px;
            transition: 0.2s;
            border: 1px solid var(--border-light);
            flex-shrink: 0;
            z-index: 3;
        }
        .thumb-arrow:hover {
            background: var(--primary-blue);
            color: white;
            border-color: var(--primary-blue);
            box-shadow: 0 6px 16px rgba(0,102,204,0.25);
        }
        .thumb-arrow.disabled {
            opacity: 0.3;
            pointer-events: none;
            cursor: default;
        }

        /* 图片计数器 */
        .image-counter {
            background: rgba(0,102,204,0.85);
            color: white;
            padding: 6px 14px;
            border-radius: 40px;
            font-size: 15px;
            font-weight: 600;
            letter-spacing: 0.5px;
            box-shadow: 0 4px 10px rgba(0,102,204,0.3);
            border: 1px solid rgba(255,255,255,0.3);
            backdrop-filter: blur(4px);
            white-space: nowrap;
            margin-left: 5px;
            flex-shrink: 0;
        }
        .image-counter i {
            margin-right: 6px;
            font-size: 14px;
            color: rgba(255,255,255,0.9);
        }

        /* 手机端隐藏箭头，启用滑动 */
        @media (max-width: 768px) {
            .thumb-arrow {
                display: none;
            }
            .gallery-thumb-wrapper {
                flex-wrap: wrap;
                justify-content: center;
            }
            .image-counter {
                order: 1;
                margin: 8px 0 0 0;
                background: var(--primary-blue);
            }
            .thumb-scroll-container {
                width: 100%;
                order: 2;
            }
            .main-stage {
                cursor: default;
            }
            .main-stage.zoomed img {
                transform: none;
            }
        }

        /* ===== 产品信息 ===== */
        .product-title { 
            font-size: 32px; 
            font-weight: 700; 
            margin: 0 0 16px 0; 
            line-height: 1.2; 
            color: #111;
            letter-spacing: -0.02em;
        }

        .product-meta {
            display: flex;
            align-items: center;
            gap: 20px;
            margin-bottom: 25px;
            color: var(--text-gray);
            font-size: 15px;
        }

        .product-meta i {
            color: var(--primary-blue);
            margin-right: 6px;
        }

        /* ===== 参数展示区 ===== */
        .prop-list-wrap { 
            background: linear-gradient(145deg, #ffffff, var(--bg-light));
            padding: 28px 30px; 
            border-radius: var(--radius); 
            margin-bottom: 30px; 
            border: 1px solid var(--border-light);
            box-shadow: inset 0 1px 3px rgba(0,0,0,0.02);
        }
        .prop-list { 
            padding: 0; 
            margin: 0; 
            list-style: none; 
        }
        .prop-list li { 
            padding: 10px 0; 
            border-bottom: 1px dashed #d8e3ee; 
            font-size: 15px; 
            color: var(--text-dark); 
            display: flex; 
            align-items: flex-start; 
            line-height: 1.5;
        }
        .prop-list li:last-child { 
            border-bottom: none; 
        }
        .prop-list li::before { 
            content: "\f00c"; 
            font-family: "Font Awesome 6 Free"; 
            font-weight: 900; 
            color: var(--primary-blue); 
            margin-right: 14px; 
            font-size: 14px; 
            flex-shrink: 0;
            margin-top: 2px;
        }

        /* ===== 按钮 ===== */
        .btn-row { 
            display: flex; 
            gap: 16px; 
        }
        .btn-action { 
            padding: 0 40px; 
            height: 54px; 
            display: inline-flex; 
            align-items: center; 
            justify-content: center; 
            font-size: 16px; 
            font-weight: 600; 
            border-radius: 40px; 
            transition: all 0.3s; 
            text-decoration: none !important; 
            border: none; 
            cursor: pointer;
            letter-spacing: 0.3px;
        }
        .btn-blue { 
            background: var(--gradient-blue); 
            color: #fff !important; 
            box-shadow: 0 8px 18px rgba(0,102,204,0.25); 
        }
        .btn-blue:hover { 
            background: linear-gradient(135deg, #004999 0%, #003d80 100%);
            transform: translateY(-3px); 
            box-shadow: 0 15px 25px -5px rgba(0,102,204,0.35);
        }

        /* ===== 详情选项卡 ===== */
        .tabs-section { 
            margin-top: 60px; 
        }
        .tab-head { 
            display: inline-block; 
            background: var(--primary-blue); 
            color: #fff; 
            padding: 12px 35px; 
            font-weight: 600; 
            border-radius: var(--radius) var(--radius) 0 0; 
            font-size: 16px; 
            letter-spacing: 0.5px;
        } 
        .content-rich { 
            border-top: 3px solid var(--primary-blue); 
            padding: 35px 0; 
            line-height: 1.7; 
            font-size: 15px; 
            color: var(--text-gray);
        }
        .content-rich img { 
            max-width: 100% !important; 
            height: auto !important; 
            margin: 20px 0; 
            border-radius: 8px; 
            box-shadow: var(--shadow-sm);
        }

        /* ===== 猜你喜欢 ===== */
        .section-header { 
            margin: 60px 0 30px; 
            border-bottom: 2px solid var(--border-light); 
            padding-bottom: 15px; 
        }
        .section-header h3 { 
            font-size: 26px; 
            margin: 0; 
            font-weight: 700; 
            color: #111;
            position: relative;
            display: inline-block;
        }
        .section-header h3:after {
            content: '';
            position: absolute;
            bottom: -17px;
            left: 0;
            width: 60px;
            height: 3px;
            background: var(--primary-blue);
        }

        .related-grid { 
            display: grid; 
            grid-template-columns: repeat(4, 1fr); 
            gap: 24px; 
            margin-bottom: 60px; 
        }
        .related-card { 
            text-decoration: none; 
            color: inherit; 
            background: #fff; 
            border: 1px solid #e9eef4; 
            border-radius: 12px; 
            overflow: hidden; 
            transition: 0.3s; 
            box-shadow: var(--shadow-sm);
        }
        .related-card:hover { 
            transform: translateY(-6px); 
            border-color: var(--primary-blue); 
            box-shadow: var(--shadow-hover);
        }
        .related-img-box { 
            width: 100%; 
            aspect-ratio: 1; 
            overflow: hidden; 
            background: var(--bg-light); 
        }
        .related-img-box img { 
            width: 100%; 
            height: 100%; 
            object-fit: cover; 
            transition: transform 0.5s;
        }
        .related-card:hover .related-img-box img {
            transform: scale(1.05);
        }
        .related-info { 
            padding: 18px 15px 20px; 
            text-align: center; 
        }
        .related-name { 
            font-size: 16px; 
            font-weight: 600; 
            margin: 0 0 12px; 
            height: 2.8em; 
            overflow: hidden; 
            line-height: 1.4; 
            display: -webkit-box; 
            -webkit-line-clamp: 2; 
            -webkit-box-orient: vertical;
            color: var(--text-dark);
        }
        .related-btn { 
            background: var(--bg-light); 
            color: var(--primary-blue); 
            padding: 10px 0; 
            width: 100%; 
            display: block; 
            font-size: 14px; 
            font-weight: 600; 
            border-radius: 30px; 
            transition: 0.2s;
            border: 1px solid var(--border-light);
        }
        .related-card:hover .related-btn { 
            background: var(--primary-blue); 
            color: #fff; 
            border-color: var(--primary-blue);
        }

        /* ===== 询盘表单 ===== */
        .inquiry-outer { 
            background: linear-gradient(135deg, #f5f9ff 0%, #e8f0fe 100%);
            padding: 60px 0; 
            margin-top: 40px; 
            border-top: 1px solid var(--border-light);
            border-bottom: 1px solid var(--border-light);
        }
        .inquiry-title { 
            text-align: center; 
            font-size: 28px; 
            font-weight: 800; 
            margin-bottom: 8px; 
            color: var(--text-dark);
            letter-spacing: -0.02em;
        }
        .inquiry-subtitle { 
            text-align: center; 
            color: var(--text-gray); 
            margin-bottom: 35px; 
            font-size: 16px; 
        }
        .form-grid-1480 { 
            display: grid; 
            grid-template-columns: repeat(2, 1fr); 
            gap: 18px; 
            max-width: 1000px; 
            margin: 0 auto; 
        }
        .input-group { 
            position: relative; 
        }
        .input-modern { 
            width: 100%; 
            padding: 14px 18px; 
            background: #fff; 
            border: 1px solid #d9e2ef; 
            border-radius: 8px; 
            font-size: 15px; 
            box-sizing: border-box; 
            outline: none; 
            transition: 0.2s; 
        }
        .input-modern:focus { 
            border-color: var(--primary-blue); 
            box-shadow: 0 0 0 3px rgba(0,102,204,0.1); 
        }
        .full-width { 
            grid-column: span 2; 
        }
        .submit-container { 
            grid-column: span 2; 
            text-align: center; 
            margin-top: 15px; 
        }
        .btn-submit { 
            width: 300px; 
            height: 56px; 
            background: var(--gradient-blue); 
            color: #fff; 
            border: none; 
            border-radius: 40px; 
            font-size: 16px; 
            font-weight: 700; 
            cursor: pointer; 
            transition: 0.3s; 
            box-shadow: 0 10px 20px rgba(0,102,204,0.25);
            letter-spacing: 0.5px;
        }
        .btn-submit:hover { 
            background: linear-gradient(135deg, #004999 0%, #003d80 100%);
            transform: translateY(-3px); 
            box-shadow: 0 18px 28px -5px rgba(0,102,204,0.35);
        }

        /* ===== 响应式调整 ===== */
        @media (max-width: 1200px) {
            .related-grid { grid-template-columns: repeat(3, 1fr); }
        }

        @media (max-width: 992px) {
            .product-hero { flex-direction: column; gap: 30px; }
            .product-gallery { width: 100%; max-width: 600px; margin: 0 auto; }
            .related-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
            .form-grid-1480 { grid-template-columns: 1fr; max-width: 600px; }
            .full-width, .submit-container { grid-column: span 1; }
            .btn-submit { width: 100%; }
        }

        @media (max-width: 768px) {
            .container-wide { padding: 0 20px; }
            .product-title { font-size: 28px; }
            .prop-list-wrap { padding: 20px; }
            .btn-row { flex-direction: column; }
            .btn-action { width: 100%; }
            .related-grid { gap: 15px; }
            .related-name { font-size: 14px; }
        }

        @media (max-width: 480px) {
            .related-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
            .related-info { padding: 12px 10px; }
            .related-btn { font-size: 12px; padding: 8px 0; }
            .thumb-grid li { flex: 0 0 70px; height: 70px; }
            .inquiry-title { font-size: 24px; }
        }

        .tags-list {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin: 25px 0 10px;
        }
        .tags-list a {
            background: var(--bg-light);
            padding: 6px 18px;
            border-radius: 30px;
            color: var(--primary-blue);
            text-decoration: none;
            font-size: 13px;
            font-weight: 500;
            border: 1px solid var(--border-light);
            transition: 0.2s;
        }
        .tags-list a:hover {
            background: var(--primary-blue);
            color: #fff;
            border-color: var(--primary-blue);
        }