/* :root {
  --main-width: 1050px;
} */
html,
body {
  padding: 0;
  margin: 0;
  word-wrap: break-word;
  font-size: 62.5%;
  font-weight: 300;
  font-family: "Pretendard", sans-serif;
}
a {
  text-decoration: none;
  color: #fff;
  font-weight: 300;
}
ul,
li {
  padding: 0;
  margin: 0;
  list-style: none;
}

/* HEADER */
header {
  position: relative;
  top: 0;
  z-index: 10;
  display: flex;
  justify-content: center;
  transition: all 0.5s;
}
header:hover {
  background-color: rgb(0, 0, 0, 0.7);
}
.headwrap {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  max-width: 1050px;
  height: 74px;
  z-index: 10;
}
.headwrap .toggle{
  display: flex;
  width: 100px;
  align-items: center;
  justify-content: space-between
}
.headwrap .toggle a {
  font-size: 2.4rem;
}
.headwrap .toggle a.lang {
  font-size: 1.5rem;
  font-weight: bold;
  border: 1px solid #ccc;
  padding: 0 3px;
}
.headwrap .toggle a:last-child {
  display: none;
}
.headwrap button.lang {
  font-size: 1.5rem;
  font-weight: bold;
  border: 1px solid #ccc;
  padding: 0 3px;
  background: transparent;
  color: #fff;
  cursor: pointer;
}

/* NAVIGATION BAR */
nav {
  display: flex;
  margin-left: 100px;
}
nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
}
nav > ul {
  position: relative;
  z-index: 30;
  display: block;
  margin-left: 30px;
}
nav > ul > li {
  display: inline-block;
  font-size: 0;
}
nav > ul > li > a {
  padding: 10px 20px;
  font-size: 1.7rem;
  font-weight: 400;
}
nav > ul > li:hover > a {
  color: #3584e4;
}
nav > ul > li:hover > ul {
  display: block;
  visibility: visible;
}
nav ul ul {
  position: absolute;
  top: 30px;
  left: 0;
  width: 100%;
  visibility: hidden;
}
nav ul ul.m02 {
    width: 130%;
}
nav ul ul.m03 {
  text-align: center;
}
nav ul ul.m04,
nav ul ul.m05 {
  text-align: right;
}
nav ul ul li {
  display: inline-block;
  padding: 34px 10px 18px;
}
nav ul ul li a {
  font-size: 1.5rem;
  font-weight: 400;
  color: #fff;
}
nav ul ul a:hover {
  color: #3584e4;
}
nav > ul:hover + div {
  display: block;
  height: 50px;
}
nav > div {
  position: absolute;
  top: 74px;
  left: 0;
  width: 100%;
  height: 0;
  transition: all 0.5s;
  background-color: rgba(50, 50, 50, 0.7);
  z-index: 0;
}

/* 슬라이드 이미지 */
.main_slide {
  position: absolute;
  z-index: -1;
  top: 0;
  left: 0;
  height: 100vh;
  overflow: hidden;
}
.main_slide ul,
.main_slide li {
  list-style: none;
  margin: 0;
  padding: 0;
}
.main_slide ul {
  width: 100vw;
  display: flex;
  white-space: nowrap;
  animation: zoom 20s infinite;
}
.main_slide li {
  width: 100%;
  height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  flex: 1;
  background: url(../img/main_s01.jpg) no-repeat 50% 0;
  background-size: cover;
}
@keyframes zoom {
  0% {
    -webkit-transform: scale(1.2);
    transform: scale(1.2);
  }

  20%,
  80% {
    -webkit-transform: scale(1);
    transform: scale(1);
  }
  100% {
    -webkit-transform: scale(1.2);
    transform: scale(1.2);
  }
}
.main_slide li > div {
  width: 100%;
  max-width: 1050px;
  position: absolute;
  top: 25%;
  left: 50%;
  transform: translateX(-50%);
}
.main_slide .main_h13 {
  width: 100%;
  max-width: 1050px;
  padding: 0 20px;
  box-sizing: border-box;
  color: #fff;
}
.main_slide .main_h13 h1 {
  color: #000;
  font-size: 4rem;
  font-weight: 100;
  line-height: 1.2;
}
.main_slide .main_h13 h1 span {
  display: block;
}
.main_slide .main_h13 h1 span:nth-child(1) {
  animation: ani_1 20s infinite;
}
.main_slide .main_h13 h1 span:nth-child(2) {
  animation: ani_2 20s infinite;
}
.main_slide .main_h13 h1 span:nth-child(3) {
  animation: ani_3 20s infinite;
}

@keyframes ani_1 {
  0%,
  20% {
    opacity: 0;
  }
  25%,
  70% {
    opacity: 1;
  }
  80%,
  100% {
    opacity: 0;
  }
}
@keyframes ani_2 {
  0%,
  25% {
    opacity: 0;
  }
  30%,
  70% {
    opacity: 1;
  }
  80%,
  100% {
    opacity: 0;
  }
}
@keyframes ani_3 {
  0%,
  30% {
    opacity: 0;
  }
  35%,
  70% {
    opacity: 1;
  }
  80%,
  100% {
    opacity: 0;
  }
}
.main_slide .main_h13 h3 {
  font-size: 2rem;
  font-weight: 300;
}
.main_slide .main_h13 h3 span {
  display: block;
}
.main_slide .main_h13 h3 span:first-child {
  animation: ani_h3-1 20s infinite;
}
.main_slide .main_h13 h3 span:last-child {
  animation: ani_h3-2 20s infinite;
}
@keyframes ani_h3-1 {
  0%,
  40% {
    opacity: 0;
  }
  45%,
  70% {
    opacity: 1;
  }
  80%,
  100% {
    opacity: 0;
  }
}
@keyframes ani_h3-2 {
  0%,
  45% {
    opacity: 0;
  }
  50%,
  70% {
    opacity: 1;
  }
  80%,
  100% {
    opacity: 0;
  }
}

/* Popup NAVIBAR */

.navPopup {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 300;
  width: 0;
  height: 100vh;
  padding: 30px;
  visibility: hidden;
  background-color: rgba(0, 0, 0, 0.9);
  color: #eee;
  box-sizing: border-box;
}
.navPopup > div:first-child {
  display: flex;
  justify-content: flex-end;
}
.navPopup > div > a {
  font-size: 4rem;
  color: #ccc;
  /* padding-bottom: 10px; */
}
.navPopup .mobileMenu {
  padding: 15px;
  font-size: 2rem;
  border-bottom: 1px solid #333;
}
.navPopup .mobileMenu label {
  display: block;
}
.navPopup .mobileMenu input[type="radio"] {
  display: none;
}
.navPopup .mobileMenu input[type="radio"]:checked + ul {
  display: block;
}
.navPopup .mobileMenu ul {
  display: none;
  list-style: none;
  padding: 0;
}
.navPopup .mobileMenu ul a {
  display: block;
  padding: 8px 0 8px 40px;
  font-size: 1.7rem;
  color: #4fb2ff;
}

/* 메인섹션 */

section {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: center;
  position: relative;
  height: calc(100vh - 100px);
}
.main_libd {
  width: 100%;
  max-width: 1050px;
  display: flex;
  justify-content: flex-start;
}
.main_libd > div {
  flex: 1;
  display: flex;
  flex-direction: column;
  padding: 10px;
  background-color: rgb(0, 0, 0, 0.3);
}
.main_libd h1 {
  font-size: 2rem;
  font-weight: 400;
  margin: 0;
  border-bottom: 1px solid rgb(255, 255, 255, 0.3);
  padding-bottom: 5px;
  margin-bottom: 10px;
  color: #fff;
}
.main_libd li {
  display: flex;
  justify-content: space-between;
  padding: 7px 7px 7px 0;
  list-style: square;
  font-size: 1.5rem;
}
.main_libd p {
  margin: 0;
}
.main_libd span {
  color: #eee;
}
.main_libd div:first-child {
  margin-right: 30px;
}
.main_libd strong {
  padding: 3px 15px 5px;
  background-color: #193b81;
  color: #fff;
  margin-right: 10px;
  font-weight: 300;
}
.main_libd .gray strong {
  background: #787878;
}
.main_libd a:hover {
  color: #3584e4;
}

@media screen and (max-width: 900px) {
  header {
    padding: 0 10px;
  }
  .headwrap .toggle a:first-child {
    display: none;
  }
  nav {
    display: none;
  }
  .headwrap .toggle a:nth-child(4) {
    display: block;
    font-size: 3rem;
  }
   .headwrap .toggle a:nth-child(-n + 2) {
    display: none;
  }
  .main_slide li {
    background: url(../img/main_s01.jpg) no-repeat 63% 0;
  }
  .main_slide .main_h13 h1 {
    font-size: 3rem;
  }
  .main_slide .main_h13 h3 {
    font-size: 1.6rem;
  }
  .main_libd div:first-child {
    margin: 0 10px;
  }
  .main_libd div:last-child,
  .main_libd span {
    display: none;
  }
}