/* 移动端菜单样式 */
.mobile-menu-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    z-index: 999;
}

.mobile-menu-container {
    display: none;
    position: fixed;
    top: 0;
    right: -300px;
    width: 300px;
    height: 100%;
    background: #fff;
    z-index: 1000;
    transition: right 0.3s ease;
    overflow-y: auto;
}

.mobile-menu-container.open {
    right: 0;
}

.mobile-menu-close {
    position: absolute;
    top: 15px;
    right: 15px;
    font-size: 30px;
    cursor: pointer;
    color: #333;
    z-index: 1001;
}

.mobile-menu-content {
    padding: 70px 20px 20px;
}

.mobile-menu-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.mobile-menu-list > li {
    border-bottom: 1px solid #eee;
}

.mobile-menu-list > li > a {
    display: block;
    padding: 15px 0;
    color: #333;
    text-decoration: none;
    font-size: 16px;
    position: relative;
}

.mobile-menu-list > li > a.has-submenu:after {
    content: '>';
    position: absolute;
    right: 0;
    transform: rotate(90deg);
    transition: transform 0.3s;
}

.mobile-menu-list > li > a.has-submenu.active:after {
    transform: rotate(-90deg);
}

.mobile-menu-list .submenu {
    display: none;
    list-style: none;
    padding: 0 0 0 20px;
    margin: 0;
}

.mobile-menu-list .submenu.active {
    display: block;
}

.mobile-menu-list .submenu li a {
    display: block;
    padding: 10px 0;
    color: #666;
    text-decoration: none;
    font-size: 14px;
}

/* 移动端显示汉堡菜单 */
@media (max-width: 768px) {
    .header_nav {
        display: none;
    }
    
    .mobile_key {
        display: block;
    }
}

/* 桌面端隐藏汉堡菜单 */
@media (min-width: 769px) {
    .mobile_key {
        display: none;
    }
    
    .mobile-menu-container,
    .mobile-menu-overlay {
        display: none !important;
    }
}