/* 响应式设计 - 科技感分屏风格 */

@media (max-width: 1400px) {
    .container {
        padding: 0 40px;
    }
}

@media (max-width: 1200px) {
    .banner {
        grid-template-columns: 1fr;
        height: auto;
        min-height: 90vh;
    }
    
    .banner-left {
        padding: 80px 60px;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
    }
    
    .banner-right {
        min-height: 400px;
    }
    
    .split-section {
        grid-template-columns: 1fr;
    }
    
    .grid {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 992px) {
    nav ul {
        gap: 25px;
    }
    
    .content-card h2 {
        font-size: 36px;
    }
    
    .banner h1 {
        font-size: 48px;
    }
}

@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
        gap: 25px;
        padding: 20px 0;
    }
    
    nav ul {
        flex-wrap: wrap;
        gap: 15px;
        justify-content: center;
    }
    
    main {
        margin-top: 120px;
    }
    
    .banner {
        min-height: 70vh;
    }
    
    .banner-left {
        padding: 60px 40px;
    }
    
    .banner h1 {
        font-size: 36px;
    }
    
    .banner p {
        font-size: 16px;
    }
    
    .content-section {
        padding: 60px 0;
    }
    
    .content-card h2 {
        font-size: 32px;
        padding-left: 20px;
    }
    
    .content-card h2::before {
        width: 3px;
    }
    
    .content-card h3 {
        font-size: 24px;
    }
    
    .grid {
        gap: 30px;
    }
    
    .product-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 30px;
    }
    
    footer .container {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }
    
    .split-left {
        padding: 50px 40px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 25px;
    }
    
    .banner-left {
        padding: 40px 25px;
    }
    
    .banner h1 {
        font-size: 28px;
    }
    
    .content-card h2 {
        font-size: 28px;
    }
    
    .content-card h3 {
        font-size: 20px;
    }
    
    .error-page h1 {
        font-size: 120px;
    }
    
    .error-page h2 {
        font-size: 24px;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .stat-number {
        font-size: 42px;
    }
    
    .btn {
        padding: 14px 30px;
        font-size: 12px;
    }
    
    .card {
        padding: 30px 25px;
    }
}