/**
 * 响应式样式
 */

/* Tablet */
@media (max-width: 1024px) {
    .types-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .cases-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .advantages-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .contact-methods {
        align-items: center;
    }
    
    .contact-qrcode {
        order: -1;
    }
    
    .footer-content {
        grid-template-columns: 1fr 1fr;
        gap: 40px;
    }
    
    .footer-qrcode {
        display: none;
    }
    
    .contact-page-content {
        grid-template-columns: 1fr;
    }
    
    .blog-item {
        flex-direction: column;
    }
    
    .blog-cover {
        width: 100%;
        height: 200px;
    }
}

/* Mobile */
@media (max-width: 640px) {
    .header-content {
        height: 60px;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .nav {
        position: fixed;
        top: 60px;
        left: 0;
        right: 0;
        background: #fff;
        flex-direction: column;
        padding: 20px;
        gap: 0;
        border-bottom: 1px solid var(--border);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s;
    }
    
    .nav.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav-link {
        padding: 15px 0;
        border-bottom: 1px solid var(--border);
    }
    
    .hero {
        padding: 60px 0;
    }
    
    .hero-title {
        font-size: 32px;
    }
    
    .hero-subtitle {
        font-size: 18px;
    }
    
    .hero-desc {
        font-size: 15px;
    }
    
    .hero-btns {
        flex-direction: column;
        padding: 0 40px;
    }
    
    .btn-lg {
        padding: 14px 28px;
        font-size: 16px;
    }
    
    .section {
        padding: 50px 0;
    }
    
    .section-title {
        font-size: 28px;
    }
    
    .types-grid {
        grid-template-columns: 1fr;
    }
    
    .type-card {
        padding: 30px 20px;
    }
    
    .cases-grid,
    .cases-grid-detail {
        grid-template-columns: 1fr;
    }
    
    .deals-list {
        grid-template-columns: 1fr;
    }
    
    .deal-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }
    
    .deal-info {
        flex-wrap: wrap;
    }
    
    .advantages-grid {
        grid-template-columns: 1fr;
    }
    
    .advantage-card {
        padding: 30px 20px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .footer-links {
        display: none;
    }
    
    .page-header {
        padding: 40px 0;
    }
    
    .page-title {
        font-size: 28px;
    }
    
    .filter-bar {
        justify-content: center;
    }
    
    .filter-item {
        padding: 8px 16px;
        font-size: 14px;
    }
    
    .contact-form-wrapper {
        padding: 25px;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .article-title {
        font-size: 24px;
    }
    
    .article-content {
        font-size: 16px;
    }
    
    .pagination {
        flex-wrap: wrap;
    }
    
    .page-btn {
        min-width: 36px;
        height: 36px;
        font-size: 14px;
    }
}

/* Mobile Menu Toggle */
.mobile-menu-btn.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-btn.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-btn.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}