/* 响应式样式补充 */

/* 移动菜单按钮 */
.menu-toggle {
    display: none;
    cursor: pointer;
    padding: 10px;
}

.menu-toggle span {
    display: block;
    width: 25px;
    height: 3px;
    background-color: #333;
    margin: 5px 0;
    transition: all 0.3s ease;
}

/* 平板电脑布局 */
@media (max-width: 992px) {
    .container {
        padding: 0 20px;
    }
    
    .menu-toggle {
        display: block;
    }
    
    .nav-menu {
        display: none;
        width: 100%;
        padding: 20px 0;
        text-align: center;
    }
    
    .nav-menu.active {
        display: block;
    }
    
    .nav-menu li {
        margin: 10px 0;
    }
    
    .user-actions {
        flex-wrap: wrap;
    }
    
    .menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 6px);
    }
    
    .menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -6px);
    }
}

/* 手机布局 */
@media (max-width: 768px) {
    .header-top {
        display: none;
    }
    
    .content-section {
        padding: 30px 0;
    }
    
    .contact-details, 
    .contact-form {
        padding: 25px;
    }
    
    .contact-form h2,
    .contact-details h2 {
        font-size: 20px;
        margin-bottom: 20px;
    }
    
    .form-control input,
    .form-control textarea {
        padding: 12px;
        font-size: 14px;
    }
    
    .send-btn {
        padding: 12px 25px;
        font-size: 14px;
    }
    
    .detail-row {
        font-size: 14px;
    }
    
    .company-name {
        font-size: 16px;
    }
    
    .footer {
        padding: 30px 0 15px;
    }
    
    .footer-section h3 {
        font-size: 16px;
    }
    
    .footer-section ul li {
        font-size: 14px;
    }
}

/* 小屏幕手机 */
@media (max-width: 480px) {
    .banner {
        height: 120px;
    }
    
    .banner-content h1 {
        font-size: 22px;
    }
    
    .contact-details, 
    .contact-form {
        padding: 15px;
    }
    
    .qr-code {
        width: 100px;
        height: 100px;
    }
    
    .social-footer a {
        width: 30px;
        height: 30px;
    }
    
    .copyright {
        font-size: 12px;
    }
}