@media (max-width: 1200px) {
    /* 导航项与联系电话同屏时收紧间距，避免溢出 */
    .nav-menu {
        gap: 18px;
    }

    .nav-contact-label {
        display: none;
    }

    .nav-contact-number {
        font-size: 16px;
    }
}

@media (max-width: 1024px) {
    .container {
        padding: 0 15px;
    }
    
    .section-title h2 {
        font-size: 28px;
    }

    .nav-menu {
        gap: 14px;
    }

    .nav-contact {
        gap: 6px;
        padding: 4px 10px;
    }

    .nav-contact > i {
        font-size: 18px;
    }
}

@media (max-width: 768px) {
    body {
        padding-top: 60px;
    }

    .navbar {
        height: 60px;
    }

    /* 移动端保留联系电话，仅压缩尺寸 */
    .nav-contact {
        padding: 4px 8px;
    }

    .nav-contact > i {
        font-size: 16px;
    }

    .nav-contact-number {
        font-size: 14px;
        letter-spacing: 0;
    }

    .nav-menu {
        display: none;
        position: absolute;
        top: 60px;
        left: 0;
        width: 100%;
        background: var(--white);
        flex-direction: column;
        padding: 20px;
        box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    }

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

    .nav-item {
        width: 100%;
    }

    .dropdown-menu {
        position: static;
        box-shadow: none;
        padding: 0 0 0 16px;
        background-color: transparent;
    }

    .nav-item.dropdown .dropdown-menu {
        display: none;
    }

    .nav-item.dropdown.open .dropdown-menu {
        display: flex;
    }

    .slider-container {
        height: 400px;
    }

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

@media (max-width: 480px) {
    .slider-container {
        height: 300px;
    }
    
    .section {
        padding: 40px 0;
    }
}