/* 平板设备 */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
        position: absolute;
        top: 80px;
        left: 0;
        width: 100%;
        background: white;
        flex-direction: column;
        text-align: center;
    }

    .nav-menu.active {
        display: flex;
    }

    .nav-toggle {
        display: block;
        font-size: 24px;
        cursor: pointer;
    }

    .service-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
        padding: 0 15px;
    }

    .hero h1 {
        font-size: 36px;
    }

    .solution-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .partner-logos {
        gap: 30px;
    }
    
    .partner-logo {
        width: 150px;
    }

    .top-bar .container {
        flex-direction: column;
        gap: 5px;
    }

    .navbar {
        top: 54px;
    }

    .hero {
        padding-top: 134px;
    }

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

/* 手机设备 */
@media (max-width: 480px) {
    .service-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }

    .hero h1 {
        font-size: 28px;
    }

    .hero p {
        font-size: 16px;
    }

    .solution-grid {
        grid-template-columns: 1fr;
    }
    
    .partner-logos {
        flex-direction: column;
        gap: 40px;
    }

    .service-card {
        padding: 30px 20px;
    }

    .service-card i {
        width: 60px;
        height: 60px;
        line-height: 60px;
        font-size: 36px;
    }

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

    .footer-section {
        text-align: center;
    }

    .footer-section p {
        justify-content: center;
    }

    .product-list {
        margin: 10px 0;
    }

    .product-item {
        padding: 8px;
    }

    .product-item i {
        font-size: 16px;
    }

    .product-item span {
        font-size: 12px;
    }
}