.nav__pc__inner ul{
    display: flex;
    justify-content: space-between;
}

.nav__pc__inner ul li::after{
    content: '';
    display: block;
    width: 100%;
    border-bottom: solid hsl(0, 0%, 100%) 1px;
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 0.2s ease-in-out;
}

.nav__pc__inner ul li:hover::after{
    transform: scaleX(1);
    transform-origin: left;
}

.nav__mobile{
    position: relative;
    z-index: 9999;
    display: none;
}

.nav__mobile__btn{
    position: absolute;
    width: 50px;
    height: 25px;
    top: -25px;
    right: -75px;
    z-index: 99;
}

.nav__mobile__btn span{
    background-color: #fff;
    height: 1px;
    width: 100%;
    position: absolute;
    transition: transform .5s, opacity .5s;
}

.nav__mobile__btn span:nth-child(1){
    top: 0;
}

.nav__mobile__btn span:nth-child(2){
    top: 10px;
}

.nav__mobile__btn span:nth-child(3){
    top: 21px;
}

.nav__mobile__btn.show span:nth-child(1){
    transform: translateY(10px) rotate(-45deg);
}
.nav__mobile__btn.show span:nth-child(2){
    opacity: 0;
}
.nav__mobile__btn.show span:nth-child(3){
    transform: translateY(-12px) rotate(45deg);
}
.nav__conts {
    position: fixed;
    background-color: #877E6E;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    padding: 1rem;
    opacity: 0;
    visibility: hidden;
    transition: opacity .5s, visibility .5s;
}
.nav__conts.show {
    opacity: 1;
    visibility: visible;
}
.nav__conts.show ul{
    margin-top: 3rem;
}
.nav__conts.show ul li:not(:nth-child(1)){
    margin-top: 20px;
}
.nav__conts.show .sns{
    display: flex;
    margin-top: 20px;
}

.nav__conts.show .sns .sns__icon svg{
    margin-right: 10px;
}