* {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        
        body {
            font-family: Arial, sans-serif;
            line-height: 1.6;
            padding: 20px;
        }
        
        .product-category-title {
            font-weight: bold;
            font-size: 40px;
            color: black;
            text-align: center;
            margin: 30px 0;
            line-height: 1.2;
        }
        
        .product-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 15px;
        }
        
        .product-item {
            position: relative;
            overflow: hidden;
            transition: all 0.3s ease;
        }
        
        .product-link {
            display: block;
            width: 100%;
            position: relative;
            text-decoration: none;
        }
        
        .product-image {
            width: 100%;
            height: auto;
            display: block;
            transition: opacity 0.4s ease;
        }
        
        .product-image.hover {
            position: absolute;
            top: 0;
            left: 0;
            opacity: 0;
            width: 100%;
            height: auto;
        }
        
        .product-item:hover .product-image.default {
            opacity: 0;
        }
        
        .product-item:hover .product-image.hover {
            opacity: 1;
        }
        
        /* 响应式布局 */
        @media (max-width: 1200px) {
            .product-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }
        
        @media (max-width: 768px) {
            .product-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 15px;
            }
            
            .product-category-title {
                font-size: 32px;
            }
        }
        
        @media (max-width: 480px) {
            .product-grid {
                grid-template-columns: 1fr;
            }
            
            .product-category-title {
                font-size: 28px;
                margin: 20px 0;
            }
        }