/* 响应式设计 */

/* 平板设备 (768px - 991px) */
@media (max-width: 991px) {
    .hero-title {
        font-size: 42px;
    }
    
    .hero-subtitle {
        font-size: 28px;
    }
    
    .section-title {
        font-size: 28px;
    }
    
    .product-detail {
        grid-template-columns: 1fr;
        gap: 30px;
    }
}

/* 手机设备 (小于768px) */
@media (max-width: 767px) {
    /* 容器 */
    .container {
        padding: 0 15px;
    }
    
    /* 头部 */
    .header-content {
        position: relative;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .main-nav {
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background-color: var(--white);
        box-shadow: var(--shadow-md);
        display: none;
        padding: 20px 0;
    }
    
    .main-nav.active {
        display: block;
    }
    
    .nav-list {
        flex-direction: column;
        gap: 0;
        text-align: center;
    }
    
    .nav-link {
        display: block;
        padding: 15px 20px;
        border-bottom: 1px solid var(--border-color);
    }
    
    /* Logo */
    .logo-text h1 {
        font-size: 20px;
    }
    
    .logo-subtitle {
        font-size: 10px;
    }
    
    /* 英雄区域 */
    .hero {
        padding-top: 100px;
        min-height: 80vh;
    }
    
    .hero-title {
        font-size: 32px;
    }
    
    .hero-subtitle {
        font-size: 24px;
    }
    
    .hero-description {
        font-size: 16px;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .hero-buttons .btn {
        width: 100%;
        max-width: 250px;
        margin-bottom: 10px;
    }
    
    /* 区域 */
    .section {
        padding: 60px 0;
    }
    
    .section-title {
        font-size: 24px;
    }
    
    /* 服务网格 */
    .services-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    /* 产品网格 */
    .products-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    /* 联系内容 */
    .contact-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    /* 页脚 */
    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    /* 产品筛选 */
    .products-filter {
        justify-content: flex-start;
        overflow-x: auto;
        padding-bottom: 10px;
        margin-bottom: 30px;
    }
    
    .filter-btn {
        flex-shrink: 0;
        padding: 6px 15px;
        font-size: 12px;
    }
    
    /* 产品详情 */
    .product-info h1 {
        font-size: 24px;
    }
    
    .product-price-large {
        font-size: 28px;
    }
    
    .product-actions {
        flex-direction: column;
    }
    
    .product-actions .btn {
        width: 100%;
        text-align: center;
    }
    
    /* 分页 */
    .pagination {
        flex-wrap: wrap;
    }
    
    /* 面包屑导航 */
    .breadcrumb {
        padding: 15px 0;
        margin-top: 60px;
    }
    
    .breadcrumb-content {
        font-size: 14px;
    }
}

/* 小手机设备 (小于480px) */
@media (max-width: 479px) {
    .hero-title {
        font-size: 28px;
    }
    
    .hero-subtitle {
        font-size: 20px;
    }
    
    .logo-img {
        height: 35px;
    }
    
    .section-title {
        font-size: 22px;
    }
    
    .product-thumbnails .thumbnail {
        width: 60px;
        height: 60px;
    }
    
    .footer-logo-img {
        height: 35px;
    }
}