/* 二级菜单加宽 */
.lab-nav-sub {
    position: absolute;
    top: 100%;
    left: 50%;
    width: min(1200px, 100vw);
    transform: translateX(-50%);
    z-index: 100;}

.lab-nav-sub > div {
    width: 100%;
    box-sizing: border-box;}

.lab-nav-sub ul {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    width: 100%;
    min-height: 54px;
    padding: 8px 24px;
    box-sizing: border-box;}

.lab-nav-sub li {
    flex: 0 0 auto;}

.lab-nav-sub a {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 120px;
    min-height: 38px;
    padding: 6px 20px;
    box-sizing: border-box;
    white-space: nowrap;}