/* 响应式设计 */
@media (max-width: 768px) {
    .navbar .container {
        padding: 15px;
    }
    
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background-color: white;
        box-shadow: 0 5px 10px rgba(0,0,0,0.1);
        padding: 20px;
        flex-direction: column;
    }
    
    .nav-links.active {
        display: flex;
    }
    
    .nav-links li {
        margin-left: 0;
        margin-bottom: 15px;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .header h1 {
        font-size: 36px;
    }
    
    .header p {
        font-size: 16px;
    }
    
    .posts-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }
}

@media (max-width: 480px) {
    .header h1 {
        font-size: 28px;
    }
    
    .container {
        padding: 0 15px;
    }
    
    .post-card {
        padding: 15px;
    }
}