/* Meridian 经纬主题 - 桌面端导航下拉菜单 */
[data-region="primary-nav"] ul li {
    position: relative;
}
[data-region="primary-nav"] ul li > ul {
    display: none;
    position: absolute;
    left:0;
    top:100%;
    background:#ffffff;
    box-shadow: 0 3px 12px rgba(0,0,0,0.18);
    z-index:9999;
    min-width:220px;
    padding: 8px 0;
}
[data-region="primary-nav"] ul li:hover > ul {
    display:block;
}
[data-region="primary-nav"] ul li ul li a {
    padding: 10px 18px;
    display:block;
    white-space:nowrap;
}
[data-region="primary-nav"] ul li ul li a:hover {
    background:#f5f5f5;
}