#header .nav-menu>li:nth-child(1){
   position: unset;
}

#header .nav-container{
    position: relative;
}

.nav-menu3{
    width: 140px;
    background: transparent!important;
    border:none!important;
}

.nav-menu4{
    width: 100%;
    border:none!important;
}


.nav-menu3-t {
    width: 100%;
    display: flex;
    text-align: center;
    height: 40px;
    align-items: center;
    justify-content: center;
    padding: 0 10px;
    transition: 0.5s all;
    background: #fff;
}

#header .nav-menu .nav_item1:after{
    content: '';
    width: 0%;
    height: 2px;
    background-color: var(--allColor);
    position: absolute;
    left: 0;
    bottom: 0;
    transition: 0.5s;
}

#header .nav-menu > li:hover .nav_item1:after{
    width: 100%;
}

#header .nav-menu3-t:hover{
    color: var(--allColor)!important;
}

.menu4-flex {
    width: 100%;
    display: flex;
}

.menu4_lr{
    width: 26%;
    background: #f7f7f7;
    padding: 40px 3vw;
}

.menu4_ri{
    width: 74%;
    padding: 40px 4vw;
}

.menu4_li {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 0;
    color: #222;
    transition: 0.5s;
    border-bottom: 1px solid rgba(0 0 0 / 10%);
}

.menu4_li svg{
    margin-left: 8px;
    fill: #999999;
    transition: all 0.3s linear;
}

.menu4_li.cur{
    border-color: var(--allColor);
}

.menu4_li.cur span{
    color: var(--allColor);
}

.menu4_li.cur svg{
    fill: var(--allColor);
}

.menu4_li:not(:last-child){
    margin-bottom: 1.5vw;
}

.menu4_ri_li {
    width: 100%;
    display: none;
    flex-wrap: wrap;
}
.menu4_ri_li.menu4_ri_solution .menu4_ri_li_t{
    flex:0 0 auto;
    width: auto;
    color: #fefefe;
    margin-right:  6%;
}
.menu4_ri_li.menu4_ri_solution{
    justify-content:space-between;
}
 .menu4_ri_li.menu4_ri_solution .menu4_ri_li_t:last-child{
     margin-right: 0;
 }
.menu4_ri_li.menu4_ri_solution .menu4_ri_li_t .t_3{
    width: 100%;
}
.menu4_ri_li.menu4_ri_solution .menu4_ri_li_t .t_3 a{
    color: #777 !important;
}
.menu4_ri_li.cur {
    display: flex;
}

.menu4_ri_li_t {
    width: 32%;
    margin-bottom: 1em;
    margin-right: 4%;
}

.menu4_ri_li_t:nth-child(3n){
    margin-right: 0;
}
.menu4_ri_li_t>a{
    cursor: default;
}
.menu4_ri_li_t .t_3  a{
    transition: 0.5s;
    cursor: pointer;
}

.menu4_ri_li_t .t_3 a:hover{
   color: var(--allColor);
    text-decoration: underline;

}