/* 主体 */
        .main {
            padding: 20px 0;
        }
        .main .container {
            display: flex;
            gap: 20px;
            flex-wrap: wrap;
        }

        /* 左侧 */
        .left {
            flex: 1;
            min-width: 300px;
        }

        /* 产品图片 */
        .product-img {
            background: #fff;
            padding: 20px;
            border-radius: 6px;
            box-shadow: 0 1px 4px rgba(0, 0, 0, 0.08);
            text-align: center;
            margin-bottom: 20px;
        }
        .product-img .img-placeholder {
            width: 100%;
            max-width: 400px;
            height: 300px;
            background: #e8edf3;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto;
            border-radius: 4px;
            color: #999;
            font-size: 14px;
            background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="100" height="100" viewBox="0 0 24 24" fill="none" stroke="%23b0c4de" stroke-width="1" stroke-linecap="round" stroke-linejoin="round"><rect x="3" y="3" width="18" height="18" rx="2" ry="2"/><circle cx="8.5" cy="8.5" r="1.5"/><polyline points="21 15 16 10 5 21"/></svg>');
            background-repeat: no-repeat;
            background-position: center;
            background-size: 60px 60px;
        }

        /* 产品信息 */
        .product-info {
            background: #fff;
            padding: 25px 20px;
            border-radius: 6px;
            box-shadow: 0 1px 4px rgba(0, 0, 0, 0.08);
        }
        .product-info h1 {
            font-size: 22px;
            color: #222;
            margin-bottom: 10px;
            line-height: 1.4;
        }
        .product-info .sub {
            color: #999;
            font-size: 13px;
            margin-bottom: 15px;
        }
        .product-info .sub a {
            color: #0066c0;
        }
        .product-info .price-box {
            background: #fafafa;
            border: 1px solid #f0f0f0;
            padding: 15px 20px;
            border-radius: 4px;
            margin: 15px 0;
        }
        .product-info .price-box .price {
            font-size: 28px;
            color: #ff3300;
            font-weight: bold;
        }
        .product-info .price-box .price small {
            font-size: 14px;
            font-weight: normal;
        }
        .product-info .price-box .old-price {
            color: #999;
            font-size: 14px;
            text-decoration: line-through;
            margin-left: 15px;
        }
        .product-info .price-box .note {
            font-size: 12px;
            color: #999;
            margin-top: 5px;
        }
        .product-info .params {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 8px 20px;
            font-size: 14px;
            margin: 15px 0;
        }
        .product-info .params .label {
            color: #999;
        }
        .product-info .params .value {
            color: #333;
        }
        .product-info .contact {
            background: #f7f9fc;
            padding: 15px 20px;
            border-radius: 4px;
            margin: 15px 0;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 15px;
        }
        .product-info .contact .phone {
            font-size: 20px;
            color: #ff6600;
            font-weight: bold;
        }
        .product-info .contact .btn {
            background: #ff6600;
            color: #fff;
            border: none;
            padding: 8px 25px;
            border-radius: 4px;
            cursor: pointer;
            font-size: 14px;
        }
        .product-info .contact .btn:hover {
            background: #e65c00;
        }
        .product-info .contact .btn-outline {
            background: transparent;
            border: 1px solid #0066c0;
            color: #0066c0;
            padding: 7px 24px;
            border-radius: 4px;
            cursor: pointer;
            font-size: 14px;
        }
        .product-info .contact .btn-outline:hover {
            background: #0066c0;
            color: #fff;
        }

        /* 右侧 */
        .right {
            width: 320px;
            flex-shrink: 0;
        }

        /* 供应商信息 */
        .supplier-card {
            background: #fff;
            border-radius: 6px;
            box-shadow: 0 1px 4px rgba(0, 0, 0, 0.08);
            padding: 20px;
            margin-bottom: 20px;
        }
        .supplier-card .titles {
            font-size: 16px;
            font-weight: bold;
            color: #222;
            border-bottom: 1px solid #f0f0f0;
            padding-bottom: 12px;
            margin-bottom: 12px;
        }
        .supplier-card .company {
            font-size: 15px;
            font-weight: bold;
            color: #0066c0;
            margin-bottom: 5px;
        }
        .supplier-card .company a {
            color: #0066c0;
        }
        .supplier-card .company a:hover {
            color: #ff6600;
        }
        .supplier-card .tags {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            margin: 8px 0;
        }
        .supplier-card .tags span {
            background: #f0f4f8;
            padding: 2px 10px;
            border-radius: 12px;
            font-size: 12px;
            color: #666;
        }
        .supplier-card .info {
            font-size: 13px;
            color: #666;
            line-height: 1.8;
        }
        .supplier-card .info .label {
            color: #999;
        }
        .supplier-card .contact-item {
            display: flex;
            align-items: center;
            gap: 8px;
            margin: 5px 0;
        }
        .supplier-card .contact-item .phone {
            font-size: 18px;
            color: #ff6600;
            font-weight: bold;
        }

        /* 推荐产品 - 右侧边栏 */
        .recommend-list .rec-item {
            display: flex;
            gap: 12px;
            padding: 10px 0;
            border-bottom: 1px solid #f5f5f5;
            align-items: center;
        }
        .recommend-list .rec-item:last-child {
            border-bottom: none;
        }
        .recommend-list .rec-img {
            width: 70px;
            height: 70px;
            background: #e8edf3;
            border-radius: 4px;
            flex-shrink: 0;
            background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="30" height="30" viewBox="0 0 24 24" fill="none" stroke="%23b0c4de" stroke-width="1" stroke-linecap="round" stroke-linejoin="round"><rect x="3" y="3" width="18" height="18" rx="2" ry="2"/><circle cx="8.5" cy="8.5" r="1.5"/><polyline points="21 15 16 10 5 21"/></svg>');
            background-repeat: no-repeat;
            background-position: center;
            background-size: 30px 30px;
        }
        .recommend-list .rec-info {
            flex: 1;
        }
        .recommend-list .rec-name {
            font-size: 13px;
            color: #333;
            line-height: 1.4;
            margin-bottom: 4px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .recommend-list .rec-price {
            color: #ff3300;
            font-weight: bold;
            font-size: 15px;
        }

        /* 推荐产品 - 产品详情上方 */
        .recommend-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
            gap: 15px;
        }
        .recommend-grid .rec-card {
            border: 1px solid #f0f0f0;
            padding: 12px;
            border-radius: 4px;
            text-align: center;
            transition: box-shadow 0.2s ease;
        }
        .recommend-grid .rec-card:hover {
            box-shadow: 0 2px 8px rgba(0,0,0,0.08);
        }
        .recommend-grid .rec-card .rec-img {
            height: 120px;
            background: #e8edf3;
            border-radius: 4px;
            margin-bottom: 8px;
            background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="40" height="40" viewBox="0 0 24 24" fill="none" stroke="%23b0c4de" stroke-width="1" stroke-linecap="round" stroke-linejoin="round"><rect x="3" y="3" width="18" height="18" rx="2" ry="2"/><circle cx="8.5" cy="8.5" r="1.5"/><polyline points="21 15 16 10 5 21"/></svg>');
            background-repeat: no-repeat;
            background-position: center;
            background-size: 40px 40px;
        }
        .recommend-grid .rec-card .rec-name {
            font-size: 13px;
            color: #333;
            line-height: 1.4;
            margin-bottom: 4px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            height: 36px;
        }
        .recommend-grid .rec-card .rec-price {
            color: #ff3300;
            font-weight: bold;
            font-size: 15px;
        }

        /* 产品详情描述 */
        .desc-section {
            background: #fff;
            border-radius: 6px;
            box-shadow: 0 1px 4px rgba(0, 0, 0, 0.08);
            padding: 25px 20px;
            margin-top: 20px;
        }
        .desc-section .titles {
            font-size: 18px;
            font-weight: bold;
            color: #222;
            border-bottom: 2px solid #0066c0;
            padding-bottom: 10px;
            margin-bottom: 15px;
        }
        .desc-section .content {
            font-size: 14px;
            color: #444;
            line-height: 1.8;
        }
        .desc-section .content p {
            margin-bottom: 12px;
        }
        .desc-section .content table {
            width: 100%;
            border-collapse: collapse;
            margin: 15px 0;
            font-size: 13px;
        }
        .desc-section .content table th,
        .desc-section .content table td {
            border: 1px solid #e8e8e8;
            padding: 8px 12px;
            text-align: left;
        }
        .desc-section .content table th {
            background: #f7f9fc;
            font-weight: normal;
            color: #666;
            width: 120px;
        }

      

        /* 响应式 */
        @media (max-width: 768px) {
            
            .right {
                width: 100%;
            }
            .product-info .params {
                grid-template-columns: 1fr;
            }
            .product-info .contact {
                flex-direction: column;
                align-items: stretch;
            }
            .top-nav .container {
                flex-direction: column;
                align-items: flex-start;
                gap: 5px;
            }
            .recommend-grid {
                grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
            }
        }