/* 响应式设计 */
@media (max-width: 1024px) {
    .service-grid,
    .case-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: white;
        padding: 1rem;
        box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    }

    .nav-links.active {
        display: flex;
        flex-direction: column;
    }

    .nav-links a {
        display: block;
        padding: 0.5rem 0;
        text-align: center;
    }

    .mobile-menu {
        display: block;
        font-size: 1.5rem;
        cursor: pointer;
    }

    .hero-content h1 {
        font-size: 2rem;
    }

    .hero-content p {
        font-size: 1rem;
    }

    .service-grid,
    .case-grid {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr;
    }

    .culture-grid,
    .team-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .page-header {
        padding: 80px 0 40px;
    }

    .page-header h1 {
        font-size: 2rem;
    }

    .service-item {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .service-item.reverse {
        direction: ltr;
    }

    .advantages-grid {
        grid-template-columns: 1fr;
    }

    .contact-grid {
        grid-template-columns: 1fr;
    }

    .info-item {
        flex-direction: column;
        text-align: center;
    }

    .info-item i {
        margin-bottom: 1rem;
        margin-right: 0;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .section-title {
        font-size: 2rem;
    }

    .hero-content h1 {
        font-size: 1.8rem;
    }

    .container {
        padding: 0 15px;
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .stat-number {
        font-size: 2.5rem;
    }
}