/* 响应式样式 */

/* 平板设备 */
@media (max-width: 1024px) {
    .hero h1 {
        font-size: 3rem;
    }
    
    .showcase-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }
}

/* 移动设备 */
@media (max-width: 768px) {
    .site-header {
        padding: 10px 0;
    }
    
    .menu-toggle {
        display: block;
    }
    
    .main-navigation ul {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--dark-accent);
        flex-direction: column;
        padding: 20px;
    }
    
    .main-navigation.active ul {
        display: flex;
    }
    
    .main-navigation li {
        margin: 10px 0;
    }
    
    .hero {
        padding-top: 70px;
        height: auto;
        min-height: 100vh;
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .section {
        padding: 70px 0;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .timeline::after {
        left: 31px;
    }
    
    .timeline-item {
        width: 100%;
        padding-left: 70px;
        padding-right: 25px;
    }
    
    .timeline-item:nth-child(even) {
        left: 0;
    }
    
    .timeline-item:nth-child(odd) .timeline-date,
    .timeline-item:nth-child(even) .timeline-date {
        left: 15px;
        right: auto;
    }
    
    .footer-content {
        flex-direction: column;
    }
    
    .footer-widget {
        margin-bottom: 30px;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero p {
        font-size: 1rem;
    }
    
    .btn {
        padding: 10px 20px;
        font-size: 0.9rem;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .showcase-grid {
        grid-template-columns: 1fr;
    }
}