.menuk .menuUlLv1 .menuLiLv1 .menuUlLv2 .menuLiLv2{
    position: relative;
}
.menuLiLv2:hover,
.menuLiLv2:hover .menuUlLv3 {
    display: block;
    opacity: 1;
}
.menuk .menuUlLv1 .menuLiLv1 .menuUlLv2 .menuLiLv2 .menuUlLv3{
    position: absolute;
    top: 0;
    left: 100%;
    display: none;
    opacity: 0;
    visibility: hidden;
    transition: 0.2s;
    margin-top: 0 !important;
    transform: none !important;
    pointer-events: auto; /* 🔥 QUAN TRỌNG */
}
.menuk .menuUlLv1 .menuLiLv1 .menuUlLv2 .menuLiLv2:hover > .menuUlLv3{
    display: block;
    opacity: 1;
    visibility: visible;
}