:root {
		    --primary: #a61b20;
		    --secondary: #d32f2f;
		    --accent: #f44336;
		    --light: #f5f5f5;
		    --dark: #7f0000;
		    --gray: #9e9e9e;
		    --border-radius: 6px;
		    --box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
		    --transition: all 0.3s ease;
		}
		
		.container {
		    max-width: 1200px;
		    margin: 0 auto;
		    padding: 0 20px;
		}
		
		.product-section {
		    padding: 40px 0;
		}
		
		.section-title {
		    text-align: center;
		    margin-bottom: 50px;
		    position: relative;
		}
		
		.section-title h2 {
		    font-size: 2.2rem;
		    color: var(--primary);
		    display: inline-block;
		}
		
		.section-title h2:after {
		    content: '';
		    position: absolute;
		    bottom: -10px;
		    left: 50%;
		    transform: translateX(-50%);
		    width: 80px;
		    height: 4px;
		    background-color: var(--primary);
		}
		
		.product-content {
		    display: flex;
		    flex-direction: column;
		    gap: 40px;
		}
		
		.product-image {
		    border-radius: var(--border-radius);
		    overflow: hidden;
		    box-shadow: var(--box-shadow);
		    background-color: white;
		    padding: 20px;
		    text-align: center;
		}
		
		.product-image img {
		    max-width: 100%;
		    height: auto;
		    display: block;
		    margin: 0 auto;
		}
		
		.product-details {
		    background-color: white;
		    padding: 30px;
		    border-radius: var(--border-radius);
		    box-shadow: var(--box-shadow);
		}
		
		.product-details h3 {
		    font-size: 1.8rem;
		    margin-bottom: 20px;
		    color: var(--primary);
		}
		

		.horizontal-features {
		    display: flex;
		    
		    justify-content: space-between;
		    margin: 80px 0;
		    gap: 20px;
		}
		
		.horizontal-feature {
		    display: flex;
		    align-items: flex-start;
		    flex: 1 1 calc(25% - 20px);
		    min-width: 200px;
		    margin-bottom: 20px;
		    padding: 20px;
		    background-color: #f9f9f9;
		    border-radius: var(--border-radius);
		    transition: var(--transition);
		    border-left: 4px solid var(--primary);
		}
		
		.horizontal-feature:hover {
		    transform: translateY(-5px);
		    box-shadow: var(--box-shadow);
		    background-color: #fff5f5;
		}
		
		.horizontal-feature-icon {
		    font-size: 2.2rem;
		    color: var(--primary);
		    margin-right: 15px;
		    margin-top: 5px;
		    flex-shrink: 0;
		}
		
		.horizontal-feature-content h4 {
		    font-size: 1.2rem;
		    margin-bottom: 8px;
		    color: var(--primary);
		}
		
		/* 参数切换样式 */
		.specs-tabs {
		    margin: 40px 0;
		}
		
		.tabs-header {
		    display: flex;
		    border-bottom: 2px solid #eee;
		    margin-bottom: 20px;
		    flex-wrap: wrap;
		}
		
		.tab-btn {
		    background: none;
		    border: none;
		    padding: 12px 24px;
		    font-size: 1rem;
		    font-weight: 600;
		    color: var(--gray);
		    cursor: pointer;
		    transition: var(--transition);
		    position: relative;
		}
		
		.tab-btn.active {
		    color: var(--primary);
		}
		
		.tab-btn.active:after {
		    content: '';
		    position: absolute;
		    bottom: -2px;
		    left: 0;
		    width: 100%;
		    height: 3px;
		    background-color: var(--primary);
		}
		
		.tab-btn:hover {
		    color: var(--primary);
		}
		
		.tab-content {
		    display: none;
		    animation: fadeIn 0.5s ease;
		}
		
		.tab-content.active {
		    display: block;
		}
		
		@keyframes fadeIn {
		    from { opacity: 0; }
		    to { opacity: 1; }
		}
		
		.specs-table {
		    width: 100%;
		    border-collapse: collapse;
		    margin: 20px 0;
		    background-color: white;
		    border-radius: var(--border-radius);
		    overflow: hidden;
		    box-shadow: var(--box-shadow);
		}
		
		.specs-table th, .specs-table td {
		    padding: 15px;
		    text-align: left;
		    border-bottom: 1px solid #eee;
		}
		
		.specs-table th {
		    background-color: var(--primary);
		    color: white;
		    font-weight: 600;
		    width: 30%;
		}
		
		.specs-table tr:last-child td {
		    border-bottom: none;
		}
		
		.warning-box {
		    background-color: #fff8e1;
		    border-left: 4px solid #ffc107;
		    padding: 20px;
		    margin: 30px 0;
		    border-radius: var(--border-radius);
		}
		
		.warning-box h4 {
		    color: #ff9800;
		    margin-bottom: 10px;
		}
		
		.applications {
		    background-color: var(--light);
		    padding: 60px 0;
		}
		
		.applications-list {
		    display: grid;
		    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
		    gap: 20px;
		}
		
		.application-item {
		    background-color: white;
		    padding: 20px;
		    border-radius: var(--border-radius);
		    box-shadow: var(--box-shadow);
		    display: flex;
		    align-items: center;
		    transition: var(--transition);
		    border-left: 4px solid var(--primary);
		}
		
		.application-item:hover {
		    transform: translateY(-5px);
		    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
		    background-color: #fff5f5;
		}
		
		.application-icon {
		    font-size: 1.8rem;
		    color: var(--primary);
		    margin-right: 15px;
		}
		
		.compatible-fluids {
		    display: flex;
		    flex-wrap: wrap;
		    gap: 10px;
		    margin: 20px 0;
		}
		
		.fluid-tag {
		    background-color: #ffebee;
		    padding: 8px 15px;
		    border-radius: 20px;
		    font-size: 0.9rem;
		    color: var(--primary);
		    border: 1px solid #ffcdd2;
		}
		
		.icon-list {
		    list-style: none;
		    margin: 15px 0;
		}
		
		.icon-list li {
		    margin-bottom: 10px;
		    display: flex;
		    align-items: flex-start;
		}
		
		.icon-list i {
		    color: var(--primary);
		    margin-right: 10px;
		    margin-top: 3px;
		}
		
		.empty-tab {
		    padding: 10px;
		}
		
		.empty-tab i {
		    font-size: 4rem;
		    color: var(--gray);
		    margin-bottom: 20px;
		}
		
		.empty-tab h3 {
		    color: var(--gray);
		    margin-bottom: 10px;
		}
		
		.copyright {
		    text-align: center;
		    padding-top: 20px;
		    border-top: 1px solid rgba(255, 255, 255, 0.2);
		    font-size: 0.9rem;
		    color: #ffccbc;
		}
		
		/* 修复原有样式冲突 */
		.inner_m .product-details {
		    margin-top: 30px;
		}
		
		/* 移动端适配 */
		@media (max-width: 768px) {
		    .horizontal-feature {
		        flex: 1 1 100%;
		    }
		    
		    .tabs-header {
		        flex-direction: column;
		    }
		    
		    .tab-btn {
		        width: 100%;
		        text-align: left;
		    }
		}