/* 响应式设计 */

/* 大屏幕（1200px以上） */
@media (max-width: 1200px) {
    .container {
        max-width: 992px;
    }
    
    .team-grid,
    .Technology-grid,
    .portfolio-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .blog-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* 中等屏幕（992px-1199px） */
@media (max-width: 992px) {
    .container {
        max-width: 768px;
    }
    
    .slider-area {
        height: 500px;
    }
    
    .banner-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .service-content {
        flex-direction: column;
    }
    
    .service-images {
        margin-right: 0;
        margin-bottom: 30px;
    }
    
    .blog-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* 小屏幕（768px-991px） */
@media (max-width: 768px) {
    .container {
        max-width: 576px;
    }
    
    .main-nav {
        display: none;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .slider-area {
        height: 400px;
    }
    
    .slide-content {
        bottom: 30px;
        left: 30px;
        padding: 15px;
    }
    
    .slide-content h3 {
        font-size: 24px;
    }
    
    .slide-content p {
        font-size: 16px;
    }
    
    .banner-grid,
    .team-grid,
    .Technology-grid,
    .portfolio-grid,
    .blog-grid {
        grid-template-columns: 1fr;
    }
    
    .testimonial-item {
        width: 100%;
    }
}

/* 超小屏幕（576px以下） */
@media (max-width: 576px) {
    .container {
        padding: 0 15px;
    }
    
    .slider-area {
        height: 300px;
    }
    
    .slide-content {
        bottom: 20px;
        left: 20px;
        right: 20px;
        padding: 10px;
    }
    
    .slide-content h3 {
        font-size: 20px;
    }
    
    .slide-content p {
        font-size: 14px;
    }
    
    .section-headline h3 {
        font-size: 24px;
    }
    
    .project-menu {
        flex-wrap: wrap;
    }
    
    .filter-btn {
        margin: 5px;
    }
    
    .service-table {
        overflow-x: auto;
    }
    
    .service-table table {
        min-width: 400px;
    }
    
    #back-to-top {
        bottom: 20px;
        right: 20px;
        width: 40px;
        height: 40px;
        font-size: 20px;
    }
}