/* 响应式设计 */
@media (max-width: 1200px) {
    .diagram-row {
        flex-wrap: wrap;
    }
    
    .diagram-box {
        min-width: 150px;
    }
}

@media (max-width: 992px) {
    .hero h1 {
        font-size: 40px;
    }
    
    .feature-header h2 {
        font-size: 32px;
    }
    
    .footer-container {
        flex-direction: column;
    }
    
    .footer-logo {
        margin-bottom: 40px;
    }
}

@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
        gap: 20px;
    }
    
    .nav-links {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .hero h1 {
        font-size: 36px;
    }
    
    .feature-header h2 {
        font-size: 28px;
    }
    
    .diagram-row {
        flex-direction: column;
        gap: 10px;
    }
    
    .diagram-box {
        width: 100%;
    }
    
    .footer-links {
        flex-direction: column;
        gap: 30px;
    }
}

@media (max-width: 576px) {
    .hero h1 {
        font-size: 30px;
    }
    
    .subtitle {
        font-size: 16px;
    }
    
    .feature-header h2 {
        font-size: 24px;
    }
    
    .announcement-bar {
        font-size: 12px;
        padding: 8px 10px;
    }
    
    .announcement-bar p {
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }
}