/* 平板设备 */
@media (max-width: 992px) {
    .hero-title {
        font-size: 2.8rem;
    }
    
    .section-title h2 {
        font-size: 2.2rem;
    }
    
    .posts-grid {
        grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    }
    
    .footer-widgets {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* 移动设备 */
@media (max-width: 768px) {
    .navbar-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background-color: white;
        flex-direction: column;
        align-items: center;
        padding: 40px 20px;
        transition: var(--transition);
        box-shadow: var(--shadow);
        z-index: 999;
    }
    
    .navbar-menu.active {
        left: 0;
    }
    
    .nav-menu {
        flex-direction: column;
        gap: 20px;
        width: 100%;
    }
    
    .nav-menu li {
        width: 100%;
        text-align: center;
    }
    
    .nav-menu a {
        display: block;
        padding: 15px;
        border-bottom: 1px solid var(--border-color);
    }
    
    .navbar-toggle {
        display: block;
    }
    
    .navbar-actions {
        gap: 10px;
    }
    
    .btn {
        padding: 8px 16px;
    }
    
    .hero-title {
        font-size: 2.2rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .hero-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .hero-btn {
        width: 100%;
        max-width: 300px;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .download-stats {
        flex-direction: column;
        gap: 30px;
    }
    
    .platform-buttons {
        flex-direction: column;
    }
    
    .platform-btn {
        justify-content: center;
    }
    
    .posts-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-widgets {
        grid-template-columns: 1fr;
    }
    
    .footer-bottom .container {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-menu {
        justify-content: center;
    }
}

/* 小屏移动设备 */
@media (max-width: 480px) {
    .hero-title {
        font-size: 1.8rem;
    }
    
    .section-title h2 {
        font-size: 1.8rem;
    }
    
    .feature-card {
        padding: 30px 20px;
    }
    
    .testimonial-card {
        padding: 30px 20px;
    }
    
    .cta-content h2 {
        font-size: 2rem;
    }
}