/* 移动端响应式修复 */
@media (max-width: 768px) {
    /* 修复导航菜单在移动端的显示问题 */
    .custom-header {
        height: auto;
        padding: 10px 0;
    }
    
    .nav-menu {
        flex-wrap: wrap;
        gap: 10px;
        justify-content: center;
    }
    
    .nav-menu li {
        margin: 5px 0;
    }
    
    /* 修复视频区域在移动端的高度问题 */
    .video-banner {
        height: 60vh;
        min-height: 400px;
    }
    
    /* 修复产品卡片在移动端的显示 */
    .products-grid {
        grid-template-columns: 1fr !important;
        gap: 20px;
    }
    
    /* 修复品牌故事区域在移动端的布局 */
    .story-content {
        flex-direction: column;
        gap: 20px;
    }
    
    .story-text,
    .story-image {
        min-width: 100%;
    }
    
    /* 修复支持卡片在移动端的布局 */
    .support-grid {
        grid-template-columns: 1fr !important;
        gap: 20px;
    }
    
    /* 修复视频内容在移动端的显示 */
    .video-content h1 {
        font-size: 28px !important;
        line-height: 1.3;
    }
    
    .video-content p {
        font-size: 16px;
    }
    
    /* 修复按钮在移动端的显示 */
    .btn {
        width: 100%;
        max-width: 250px;
    }
    
    /* 修复产品分类页面在移动端的布局 */
    .product-details {
        grid-template-columns: 1fr !important;
        gap: 20px;
    }
    
    .product-category-header {
        padding: 100px 15px 30px !important;
    }
    
    .product-category-header h1 {
        font-size: 32px !important;
    }
    
    /* 修复主内容区域在移动端的内边距 */
    .main-content {
        padding: 40px 15px !important;
    }
    
    /* 修复产品特性列表在移动端的显示 */
    .product-features {
        margin: 20px 0 !important;
    }
    
    .product-features h3 {
        font-size: 20px;
    }

    /* Footer mobile styles - accordion menu */
    .footer-container {
        grid-template-columns: 1fr;
        gap: 0;
        padding-bottom: 20px;
    }

    .footer-section {
        border-bottom: 1px solid #333;
    }

    .footer-section:last-child {
        border-bottom: none;
    }

    .footer-section-header {
        cursor: pointer;
        padding: 15px 0;
        margin-bottom: 0;
        position: relative;
    }

    .footer-toggle {
        display: block;
    }

    .footer-section-content {
        max-height: 0;
        overflow: hidden;
        opacity: 0;
        transition: all 0.3s ease;
    }

    .footer-section.active .footer-section-content {
        max-height: 500px;
        opacity: 1;
        padding-bottom: 15px;
    }

    .footer-toggle.active span:nth-child(1) {
        transform: rotate(90deg);
    }

    .footer-links-list li {
        margin-bottom: 10px;
    }

    .footer-contact .contact-item {
        margin-bottom: 12px;
    }
}

/* Tablet responsive styles - 3 columns, 2 rows */
@media (min-width: 768px) and (max-width: 1023px) {
    .footer-container {
        grid-template-columns: repeat(3, 1fr);
        gap: 30px 20px;
    }

    .footer-section {
        /* Each section takes 1 column in 3-column grid */
    }
}