.product-section {
            padding: 4rem 0;
        }
        
        .section-title {
            text-align: center;
            margin-bottom: 3rem;
            background: linear-gradient(rgba(0, 123, 255, 0.9), rgba(0, 123, 255, 0.9)), 
                        url('https://images.unsplash.com/photo-1558494949-ef010cbdcc31?w=1920&h=400&fit=crop') center/cover no-repeat;
            padding: 4rem 2rem;
            border-radius: 12px;
            color: #fff;
        }
        
        .section-title h2 {
            font-size: 2.5rem;
            font-weight: 700;
            margin-bottom: 1rem;
            color: #fff;
        }
        
        .section-title p {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.9);
        }
        
        .region-selector {
            background: var(--bg-light);
            padding: 2rem;
            border-radius: 12px;
            margin-bottom: 3rem;
        }
        
        .region-card {
            background: #fff;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 0.5rem;
            text-align: center;
            cursor: pointer;
            transition: all 0.3s ease;
        }
        
        .region-card:hover {
            border-color: var(--primary-color);
            transform: translateY(-2px);
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
        }
        
        .region-card.active {
            border-color: var(--primary-color);
            background: rgba(0, 123, 255, 0.05);
        }
        
        .region-card h5 {
            padding-top: 0.8rem;
        }
        
        .product-tabs {
            margin-bottom: 2rem;
        }
        
        .product-card {
            background: #fff;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 2rem;
            margin-bottom: 2rem;
            transition: all 0.3s ease;
        }
        
        .product-card:hover {
            border-color: var(--primary-color);
            transform: translateY(-2px);
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
        }
        
        .product-card h4 {
            font-weight: 600;
            margin-bottom: 1rem;
            color: var(--text-dark);
        }
        
        .product-specs {
            margin: 1.5rem 0;
        }
        
        .spec-item {
            display: flex;
            justify-content: space-between;
            padding: 0.5rem 0;
            border-bottom: 1px solid var(--border-color);
        }
        
        .spec-item:last-child {
            border-bottom: none;
        }
        
        .spec-label {
            color: var(--text-light);
        }
        
        .spec-value {
            font-weight: 500;
            color: var(--text-dark);
        }
        
        .product-price {
            margin: 1.0rem 0;
            font-size: 20px;
            text-align: right;
        }
        
        .price-value {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--primary-color);
        }
        
        .price-unit {
            font-size: 1rem;
            color: var(--text-light);
        }
        
        @media (max-width: 768px) {
            .product-section {
                padding: 2rem 0;
            }
            
            .section-title h2 {
                font-size: 2rem;
            }
            
            .region-selector {
                padding: 1.5rem;
            }
            
            .product-card {
                padding: 1.5rem;
            }
        }