/* PC 端样式 */
@media (min-width: 992px) {
    .mobile-menu {
        display: none !important; /* 隐藏移动端菜单 */
    }
    .pc-menu {
        display: flex !important; /* 显示 PC 端菜单 */
        align-items: center;
        margin: auto;
        padding-left: 15px;
        padding-right: 15px;
    }
    .navbar-nav {
        display: flex;
        list-style: none;
        margin: 0;
        padding: 0;
    }
    .nav-item {
        position: relative;
    }
    .nav-link {
        /*padding: 0.5rem 1rem;*/
        color: #333;
        text-decoration: none;
        display: block;
    }
    .mega-menu {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        border-radius: 5px;
        background-color: #f9f9f9;
        border-top: 3px solid #007bff;
        border-bottom: 1.5px solid rgb(46 214 54);
        box-shadow: 0 4px 12px rgba(0, 0, 0, 30%);
        padding: 2.5rem;
        display: none;
        /* z-index: 1040; */
    }
    .mega-menu hr {
        margin: 8px 0;
    }
    .nav-item[aria-expanded="true"] .mega-menu {
        display: block; /* 点击显示面板菜单 */
    }
    .panel-card h4 {
        font-size: 1rem;
        font-weight: bold;
        margin-bottom: 0.5rem;
    }
    .panel-card ul {
        list-style: none;
        padding-left: 0;
    }
    .panel-card li a {
        color: #5764ec;
        text-decoration: none !important;
        display: block;
        padding: 0.2rem 0;
        font-weight: normal !important;
        padding-bottom: unset !important;
        padding-top: unset !important;
    }
    .panel-card li a:hover {
        text-decoration: underline;
    }

    .pc-menu .dropdown-menu {
        display: none; /* 隐藏 PC 端的级联菜单 */
        position: absolute;
        background-color: #fff;
        box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
        min-width: 200px;
        /* z-index: 1040; */
    }
    .pc-menu .nav-item[aria-expanded="true"] .dropdown-menu {
        display: block; /* 点击显示下拉菜单 */
    }
    .pc-menu .dropdown-menu .nav-item {
        position: relative;
    }
    .pc-menu .dropdown-menu .dropdown-menu {
        top: 0;
        left: 100%;
        display: none; /* 二级菜单默认隐藏 */
    }
    .pc-menu .dropdown-menu .nav-item[aria-expanded="true"] .dropdown-menu {
        display: block; /* 点击显示三级菜单 */
    }
}

/* 移动端样式 */
@media (max-width: 991.98px) {
    .pc-menu {
        display: none !important; /* 隐藏 PC 端菜单 */
    }
    .mobile-menu {
        display: block !important; /* 显示移动端菜单 */
    }
    .mobile-menu .dropdown-menu {
        display: none; /* 默认隐藏子菜单 */
        background-color: #f8f9fa;
        padding: 0.5rem;
        margin-left: 1rem;
    }
    .mobile-menu .nav-item.active > .dropdown-menu {
        display: block !important; /* 点击后显示子菜单 */
    }
    .mobile-menu .nav-link {
        padding: 0.5rem 1rem;
        display: flex;
        justify-content: space-between;
        align-items: center;
        color: #333;
    }
    .mobile-menu .nav-link::after {
        content: '\f078'; /* Font Awesome 向下箭头 */
        font-weight: 900;
        transition: transform 0.3s;
    }
    .mobile-menu .nav-item.active .nav-link::after {
        transform: rotate(180deg); /* 点击后箭头旋转 */
    }
    .mean-nav {
        max-height: 60vh; /* 限制高度 */
        overflow-y: auto !important; /* 启用滚动 */
        -webkit-overflow-scrolling: touch; /* 优化移动端滚动 */
        padding-bottom: 1rem;
        background-color: #fff;
    }
    .mobile-menu .mega-menu {
        display: none !important; /* 隐藏移动端的面板菜单 */
    }

    .dropdown-menu {
        position: absolute;
        z-index: 1000;
        min-width: 85px; /* 根据需要调整 */
        right: 100px;
        padding: 10px 20px;
        text-align: left;
        line-height: 35px;
    }

}