/* 响应式设计部分 */
@media (max-width: 992px) {
    .tools-grid {
        grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    }
}

@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
        gap: 1rem;
        padding: 1rem;
    }
    
    .nav-links {
        width: 100%;
        justify-content: center;
        flex-wrap: wrap;
        gap: 1rem;
    }
    
    .header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
    
    .search-bar {
        width: 100%;
    }
    
    .tools-grid {
        grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    }
}

@media (max-width: 576px) {
    .container {
        padding: 0 1rem;
    }
    
    .tools-grid {
        grid-template-columns: 1fr;
    }
    
    .category-tag {
        padding: 0.5rem 0.8rem;
        font-size: 0.8rem;
    }
}