/* 响应式样式 */

/* 大型设备 (大于1200px) */
@media (min-width: 1201px) {
    .hero h1 {
        font-size: 3.8rem;
    }
}

/* 中型设备 (992px到1200px) */
@media (max-width: 1200px) {
    .hero h1 {
        font-size: 3.2rem;
    }
    
    .hero-image img {
        max-width: 100%;
    }
    
    .footer-content {
        grid-template-columns: 1fr 2fr;
    }
}

/* 平板设备 (768px到991px) */
@media (max-width: 991px) {
    h1 {
        font-size: 2.5rem;
    }
    
    h2 {
        font-size: 2rem;
    }
    
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-content {
        order: 2;
    }
    
    .hero-image {
        order: 1;
        margin-bottom: 30px;
    }
    
    .hero .description {
        margin: 0 auto 30px;
    }
    
    .cta-buttons {
        justify-content: center;
    }
    
    .contact-wrapper {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .footer-logo {
        text-align: center;
    }
    
    .footer-logo p {
        margin: 0 auto;
    }
}

/* 手机设备 (小于768px) */
@media (max-width: 767px) {
    section {
        padding: 60px 0;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .main-nav {
        position: fixed;
        top: 80px;
        left: 0;
        width: 100%;
        background: #fff;
        padding: 0;
        height: 0;
        overflow: hidden;
        transition: all 0.3s ease;
        box-shadow: 0 5px 10px rgba(0, 0, 0, 0.1);
    }
    
    .main-nav.active {
        height: auto;
        padding: 20px 0;
    }
    
    .main-nav ul {
        flex-direction: column;
        width: 100%;
    }
    
    .main-nav li {
        margin: 10px 0;
        width: 100%;
        text-align: center;
    }
    
    .main-nav a.btn {
        display: inline-block;
        margin-top: 10px;
    }
    
    .hero {
        padding: 120px 0 60px;
    }
    
    .hero h1 {
        font-size: 2.2rem;
    }
    
    .hero .subtitle {
        font-size: 1.3rem;
    }
    
    .benefits-grid, .features-grid, .cases-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-info, .contact-form {
        padding: 30px;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .footer-links-column {
        text-align: center;
    }
}

/* 超小设备 (小于576px) */
@media (max-width: 575px) {
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero .subtitle {
        font-size: 1.1rem;
    }
    
    .section-header h2 {
        font-size: 1.8rem;
    }
    
    .cta-buttons {
        flex-direction: column;
        gap: 10px;
    }
    
    .btn {
        padding: 10px 20px;
    }
    
    .feature-card, .benefit-card, .case-card {
        padding: 20px;
    }
}