/* 响应式样式 */

/* 大屏幕设备 (1200px以下) */
@media (max-width: 1200px) {
    .container {
        max-width: 90%;
    }
    
    .main-nav {
        max-width: 90%;
    }
}

/* 平板设备 (992px以下) */
@media (max-width: 992px) {
    .section-title {
        font-size: 32px;
    }
    
    .hero h1 {
        font-size: 42px;
    }
    
    .hero-subtitle {
        font-size: 20px;
    }
    
    .solution-showcase {
        flex-direction: column;
    }
    
    .about-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .contact-container {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .stats-row {
        flex-direction: column;
        align-items: center;
        gap: 50px;
    }
    
    .stat-block {
        width: 100%;
        max-width: 350px;
    }
}

/* 手机设备 (768px以下) */
@media (max-width: 768px) {
    .logo-image {
        height: 32px;
        max-width: 140px;
    }
    
    .nav-items {
        display: none;
        position: fixed;
        top: 64px;
        left: 0;
        width: 100%;
        background-color: var(--white);
        padding: 20px;
        flex-direction: column;
        text-align: center;
        box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
    }
    
    .nav-items.active {
        display: flex;
    }
    
    .mobile-nav-toggle {
        display: flex;
    }
    
    .hero {
        padding: 120px 0 80px;
    }
    
    .hero h1 {
        font-size: 36px;
    }
    
    .hero-subtitle {
        font-size: 18px;
    }
    
    .section {
        padding: 60px 0;
    }
    
    .section-title {
        font-size: 28px;
        margin-bottom: 30px;
    }
    
    .services-grid, .team-grid {
        grid-template-columns: 1fr;
    }
    
    .insights-grid {
        grid-template-columns: minmax(250px, 1fr);
    }
    
    .intro-text {
        font-size: 18px;
    }
    
    .office-locations {
        grid-template-columns: 1fr;
    }
    
    .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .stat-number {
        font-size: 48px;
    }
    
    .stat-plus {
        font-size: 32px;
    }
    
    .stat-label {
        font-size: 20px;
    }
}

/* 小型手机设备 (480px以下) */
@media (max-width: 480px) {
    .logo-image {
        height: 28px;
        max-width: 120px;
    }
    
    .hero h1 {
        font-size: 30px;
    }
    
    .section-title {
        font-size: 24px;
    }
    
    .solution-content h3,
    .about-content h3,
    .contact-info h3 {
        font-size: 24px;
    }
    
    .service-card {
        padding: 20px;
    }
    
    .form-group {
        margin-bottom: 15px;
    }
    
    .contact-form {
        padding: 20px;
    }
    
    .stat-number {
        font-size: 36px;
    }
    
    .stat-plus {
        font-size: 24px;
    }
    
    .stat-label {
        font-size: 18px;
    }
}