.humb,
nav.nav,
.sp_header{
  display: none;
}

@media screen and (max-width:1080px){
  .pc_header{
    display: none;

  }
.sp_header{
  display: initial;
  position:fixed;
  width:100%;
  z-index: 5;
  left:0;
  transform: unset;
}
.sp_header.active{
  background-color: #fff;
}
.sp_logo {
  display: block;
  width: 100%;
  text-align: left;
  max-width: 100%;
  margin: 0 auto;
  padding: 10px 20px;
  }
.sp_logo img{
  width:175px;
}
/*============
nav
=============*/
nav {
  display: block;
  position: fixed;
  top: 0;
  left: -300px;
  bottom: 0;
  width: 100%;
  background: url(../images/index/sp/sp_menu_bg.png) center left no-repeat;
  background-size: cover;
  overflow-x: hidden;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  transition: all .5s;
  z-index: 8;
  opacity: 0;
}
.open nav {
  left: 0;
  opacity: 1;
}
nav .inner {
  padding: 25px;
  height:100vh;
  position:relative;
}
nav .inner ul {
  list-style: none;
  margin: 0;
  padding: 0;
  position:absolute;
  top:50%;
  left:50%;
  transform: translate(-50%,-50%);
}
nav .inner ul li {
  position: relative;
  margin: 0;
  line-height: 1.2;
}
nav .inner ul li a,
nav .inner ul li dl dt{
  display: block;
  color: #fff;
  font-family: var(--english-font);
  font-size: 20px;
  padding: 0.5em;
  text-decoration: none;
  transition-duration: 0.2s;
}
.nav_contact_btn{
  position:absolute;
  text-align: center;
  width:90%;
  max-width:267px;
  height:72px;
  line-height: 72px;
  display: block;
  border-radius:36px;
  color:#fff;
  font-weight:bold;
  font-size:18px;
  background-color: #4BAFDD;
  bottom:50px;
  left:50%;
  transform: translateX(-50%);
}
ul.nav li:not(:first-child){
  border-left:none;
}
nav .inner ul li dl dt{
  position:relative
}
nav .inner ul li dl dt::after{
  content: "";
  display: block;
  width: 6px;
  height: 6px;
  position: absolute;
  left:70px;
  top:18px;
  border-top: solid 1px;
  border-right: solid 1px;
  transform: rotate(135deg);
  color: inherit;
  position:absolute;
}
nav .inner ul li dl dt.acc-open::after{
  content:"";
  transition:0.8s all;
  top:22px;
  transform: rotate(-45deg);
}
nav .inner ul li dl dt span{
  font-size:0.8rem;
}
nav .inner ul li dl dd a{
  font-size:12px;
  padding:0 0.5em 15px;
  text-align: left;
}
nav .inner ul li a:hover {
  background: #e4e4e4;
}
@media screen and (max-width: 767px) {
  /* nav {
    left: -220px;
    width: 220px;
  } */
}
/*============
.toggle_btn
=============*/
.toggle_btn {
  display: block;
  position: fixed;
  top: 13px;
  right: 20px;
  width: 45px;
  height: 30px;
  transition: all .5s;
  cursor: pointer;
  z-index: 10;
}
.open .toggle_btn {
  left: 330px;
}
.toggle_btn span {
  display: block;
  position: absolute;
  left: 0;
  width: 45px;
  height: 1px;
  background-color: var(--main-blue);
  border-radius: 4px;
  transition: all .5s;
}
.toggle_btn span:nth-child(1) {
  top: 4px;
}
.toggle_btn span:nth-child(2) {
  top: 13px;
}


.open .toggle_btn {
  -webkit-transform: rotate(360deg);
  transform: rotate(360deg);
}
.open .toggle_btn span{
  background-color: #fff;
}
.open .toggle_btn span:nth-child(1) {
  -webkit-transform: translate(-16px,4px) rotate(-45deg);
  transform: translate(-16px,4px) rotate(-25deg);
}
.open .toggle_btn span:nth-child(2) {
  -webkit-transform: translate(-16px,-4px) rotate(45deg);
  transform: translate(-16px,-4px) rotate(25deg);
}
/* @media screen and (max-width: 767px) {
  .open .toggle_btn {
    left: 250px;
  }
} */
/*============
#mask
=============*/
#mask {
  display: none;
  transition: all .5s;
}
.open #mask {
  display: block;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: #000;
  opacity: .8;
  z-index: 2;
  cursor: pointer;
}
}

/*
@media screen and (max-width: 768px) {
  .menu-icon:checked + label,
  .menu-icon:not(:checked) + label{
    right: 30px;
    top:30px;
  }
  .logo {
    left: 30px;
  }
  .nav{
    right: 15px;
  }
  
  .nav ul li a{
    font-size: 1rem;
  }
}*/