html, body {
  max-width: 100%;
  overflow-x: hidden;
  width: 100%;
  font-size: 20px;
  line-height: 1.15;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: none;
  -ms-overflow-style: none; /* IE and Edge */
  scrollbar-width: none; /* Firefox */
  }
  ::-webkit-scrollbar {
    display: none; /* Chrome, Safari, Opera*/
}

*{
  margin: 0;
  padding: 0;
  list-style: none;
  box-sizing: border-box;
  font-family: 'Noto Sans KR', sans-serif; 
}

a{
  background-color: transparent; 
  text-decoration: none;
  color: #000;
}
img{
  width: 100%;
}

li{
  list-style: none;
}

/* ---------------------------------------------------------------------------------------------------- */

header{
  width: 100%;
  height: 80px;
  background-color:transparent;
  z-index: 997;
  position: fixed;
  transition: 0.3s;
}
.header_wrap{
  width: 90%;
  max-width: 1720px;
  margin: 0 auto;
  position: relative;
}
.logo{
  width: 450px;
  height: 50px;
  float: left;
  background: url(../img/logo_w.svg) no-repeat center;
  margin-top: 15px;
}
.menu{
  width: 82%;
  top: 0;
  left: 60%;
  transform: translateX(-50%);
  position: absolute;
  display: flex;
}
.menu>li{
 width: 20%;
 text-align: center;
 position: relative;
}
.menu>li>a{
  line-height: 80px;
  font-size: 0.82rem;
  font-weight: 500;
  transition: 0.3s;
  color: #fff;
}
.menu>li>a:hover{
  color: #310D65;
}
/* sub_menu */
.sub_menu{
  position: absolute;
  top: 60px;
  left: 0;right: 0;
  z-index: 998;
  width: 200px;
  margin: auto;
  padding: 20px;
  background-color: #1a458a;
  display: none;
}
.sub_menu>li{
  text-align: left;
}
.sub_menu>li>a{
  font-size: 0.74rem;
  line-height: 1.7rem;
  color: #fff;
  transition: 0.3s;
}
.sub_menu>li>a:hover{
  color: #ff8c82;
}
/* header_pdf */
.header_rgbt{
  float: right;
  display: flex;
}
.header_rgbt>li>a{
  font-size: 0.7rem;
  line-height: 80px;
}
.login_bt>a{
  padding: 5px 15px;
  color: #fff;
  border: 1px solid #fff;
  margin-left: 20px;
}
.sitemap_bt>a{
  padding: 5px 10px;
  color: #000;
  background-color: #fff;
  border: 1px solid #fff;
}
.pdf_bt{
  width: 350px;
  height: 35px;
  float: right;
  background: url(../img/e-book_w.svg) no-repeat center;
  margin-top: 25px;
}
.pdf_bt>a{
  padding: 5px 10px;
  color: #fff;
  background-color: #1a458a;
  border: 1px solid #ffffff;
}

/* menu_bt */
button{
  background: transparent; 
  border:none; 
  cursor: pointer; 
}
.menu_bt{
  width: 40px;
  height: 22px;
  display: inline-block;
  position: relative;
   margin-top: 29px;
   display: none;
   float: right;
}
.menu_bt>span{
  display: block;
  width: 30px;
  height: 2px;
  background: #fff;
  position: absolute;
  left: 9px;
  transition: 0.3s;
}
.menu_bt>span:first-child{
  top: 0;
}
.menu_bt>span:nth-child(2){
  top: 10px;
}
.menu_bt>span:last-child{
  top: 20px;
}
 
.menu_bt:hover>span:nth-child(2){ 
  width: 18px;
}
/* menu_bt_on */
.menu_bt>.on:nth-child(1) {
  transform: translateY(10px) rotate(45deg);  
}
.menu_bt>.on:nth-child(2) {
  opacity: 0;
}
.menu_bt>.on:nth-child(3) {
  transform: translateY(-10px) rotate(-45deg); 
}
/* accordion_menu */
#accordion_wrap{
  width: 100%;
  height: 100%;
  position: fixed;
  top: 0;left: 0;
  background-color: rgb(255, 255, 255);
  z-index: 999;
  visibility: hidden;
  transition: 0.5s;
}
.accordion{
  width: 95%;
  margin: auto;
}
.accordion_logo{
  background: url(../img/logo.svg)no-repeat center;
  width: 180px;
  height: 40px;
  float: left;
  margin-top: 20px;
}
.accordion_pdf_bt{
  width: 350px;
  height: 35px;
  float: right;
  background: url(../img/e-book.svg) no-repeat center;
  margin-top: 25px;
}
.accordion_bt>span{
  background-color: #575a55;
}
.accordion_menu{
  padding: 100px 0;
}
.que{
position: relative;
padding: 20px 10px;
cursor: pointer;
font-size: 0.9rem;
border-bottom: 1px solid #dddddd;
}
.que_header_bt>li{
  padding: 20px 10px;  
  border-bottom: 1px solid #dddddd;
  font-size: 0.9rem;
}
.que_header_bt>li:nth-child(1){
  background-color: #575a55;
  border-bottom: none;
}
.que_header_bt>li:nth-child(1)>a{
  color: #fff;
}
.que>a>span{
  padding-left: 10px;
}

.que.on>span{
font-weight: bold;
color: #310D65;
}

.anw {
display: none;
overflow: hidden;
background-color: #1a458a;
padding: 20px;
}

.anw>li{
  padding-bottom: 30px;
}
.anw>li:last-child{
  padding-bottom: 0;
}
.anw>li>a{
  color: #fff;
  font-size: 0.8rem;
  font-weight: 300;
  transition: 0.3s;
}
.anw>li>a:hover{
  color: #000;
}
.arrow-wrap {
position: absolute;
top:50%; right: 10px;
transform: translate(0, -50%);
}

.que .arrow-top {
display: none;
}
.que .arrow-bottom {
display: block;
}
.que.on .arrow-bottom {
display: none;
}
.que.on .arrow-top {
display: block; 
}

@media (min-width: 1200px){
  #accordion_wrap{
    display: none;
  }
}
@media (max-width: 1400px){
  .header_wrap{
    width: 95%;
  }
  .logo,.accordion_logo{
    width: 350px;
  }  
  .menu{
    width: 65%;
  }

}
@media (max-width: 1199.98px){
  .menu,.header_rgbt{
    display: none;
  }
  .menu_bt{
    display: block;
  }

}
@media (max-width: 767.98px){
  header{
    height: 60px;
  }
  .logo,.accordion_logo{
    width: 160px;
    margin-top: 5px;
  }
  .menu_bt{
    margin-top: 18px;
  }
  .que,.que_header_bt>li{
    font-size: 0.8rem;
  }
  .anw>li{
    padding-bottom: 30px;
  }
  .anw>li>a{
    font-size: 0.7rem;
  }
}
@media (max-width: 360px){
  .logo,.accordion_logo{
    width: 160px;
  }
}