*{
  margin:0;
  padding:0;
  box-sizing:border-box;
}

html,
body{
  width:100%;
  min-height:100%;
  font-family:'Noto Sans KR', sans-serif;
  background:#000;
  color:#fff;
}

body.home{
  overflow:hidden;
}

a{
  text-decoration:none;
  color:inherit;
}

ul{
  list-style:none;
}

header{
  position:fixed;
  top:0;
  left:0;
  width:100%;
  height:64px;
  z-index:100;
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:0 60px;
  background:transparent;
  border:none;
  box-shadow:none;
}

.logo{
  display:flex;
  align-items:center;
  flex-shrink:0;
}

.logo img{
  display:block;
  height:300px;
}

nav{
  margin-left:auto;
}

nav ul{
  display:flex;
  gap:80px;
}

nav ul li a{
  font-size:15px;
  font-weight:500;
  transition:0.3s;
  white-space:nowrap;
}

nav ul li a:hover{
  color:#3fa9ff;
}

.menu-btn{
  display:none;
  font-size:28px;
  cursor:pointer;
  color:#fff;
}

.slider{
  width:100%;
  height:100vh;
  position:relative;
  overflow:hidden;
}

.slide{
  position:absolute;
  inset:0;
  opacity:0;
  visibility:hidden;
  transition:1s ease;
}

.slide.active{
  opacity:1;
  visibility:visible;
  z-index:10;
}

.slide-bg{
  position:absolute;
  inset:0;
  background-size:cover;
  background-position:center;
  transform:scale(1);
  transition:6s ease;
}

.slide.active .slide-bg{
  transform:scale(1.05);
}

.overlay{
  position:absolute;
  inset:0;
  background:rgba(0,0,0,0.45);
}

.overlay.light{
  background:rgba(255,255,255,0.08);
}

.gradient-bg{
  position:absolute;
  inset:0;
  background:linear-gradient(135deg, #d8b78c 0%, #b19cff 45%, #ff6f91 100%);
}

.dark-bg{
  background:radial-gradient(circle at center, #0d1c2f 0%, #050b13 45%, #000000 100%);
  overflow:hidden;
}

.circle-wrap{
  position:absolute;
  top:50%;
  left:50%;
  transform:translate(-50%, -50%);
  width:min(1000px, 88vw);
  height:min(1000px, 88vw);
  z-index:1;
}

.circle{
  position:absolute;
  top:50%;
  left:50%;
  transform:translate(-50%, -50%);
  border-radius:50%;
  border:2px solid rgba(0,140,255,0.25);
  box-shadow:0 0 25px rgba(0,140,255,0.3), inset 0 0 20px rgba(0,140,255,0.2);
  animation:pulse 4s infinite ease-in-out;
}

.c1{
  width:30%;
  height:30%;
}

.c2{
  width:45%;
  height:45%;
}

.c3{
  width:62%;
  height:62%;
}

.c4{
  width:80%;
  height:80%;
}

.c5{
  width:98%;
  height:98%;
}

.center-glow{
  position:absolute;
  top:50%;
  left:50%;
  transform:translate(-50%, -50%);
  width:14%;
  height:14%;
  border-radius:50%;
  background:radial-gradient(circle, rgba(0,120,255,0.9), rgba(0,50,120,0.1));
  filter:blur(10px);
}

@keyframes pulse{
  0%{
    transform:translate(-50%, -50%) scale(1);
    opacity:0.7;
  }
  50%{
    transform:translate(-50%, -50%) scale(1.03);
    opacity:1;
  }
  100%{
    transform:translate(-50%, -50%) scale(1);
    opacity:0.7;
  }
}

.content{
  position:relative;
  z-index:5;
  width:100%;
  height:100%;
  display:flex;
  align-items:center;
  padding-top:96px;
  padding-bottom:70px;
}

.content.left{
  justify-content:flex-start;
  padding-left:140px;
  padding-right:140px;
}

.content.center{
  justify-content:center;
  text-align:center;
  padding-left:140px;
  padding-right:140px;
}

.content-box{
  max-width:720px;
}

.center-box{
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  width:100%;
  max-width:760px;
  min-height:calc(100vh - 180px);
}

.sub-title{
  font-size:clamp(22px, 2.3vw, 34px);
  line-height:1.25;
  font-weight:600;
  color:#3fa9ff;
  margin-bottom:24px;
  word-break:keep-all;
}

.sub-title.white{
  color:#fff;
}

.first-title span{
  display:block;
}

.first-title span:first-child{
  margin-bottom:clamp(180px, 31vh, 420px);
}

.main-title{
  font-size:clamp(34px, 3.6vw, 54px);
  line-height:1.25;
  font-weight:500;
  letter-spacing:0;
  margin-bottom:40px;
  word-break:keep-all;
}

.main-title.white{
  color:#fff;
}

.center-title{
  text-align:center;
}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding:10px 30px;
  border:0.5px solid #fff;
  border-radius:999px;
  font-size:14px;
  font-weight:500;
  transition:0.3s;
}

.btn:hover{
  background:#fff;
  color:#000;
}

.white-btn{
  color:#fff;
  border-color:#fff;
}

.arrow{
  position:absolute;
  top:50%;
  transform:translateY(-50%);
  z-index:80;
  width:40px;
  height:40px;
  border:2px solid rgba(255,255,255,0);
  border-radius:50%;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:30px;
  cursor:pointer;
  transition:0.3s;
}

.arrow:hover{
  background:rgba(255,255,255,0.15);
  border-color:#fff;
  transform:translateY(-50%) scale(1.08);
}

.left-arrow{
  left:42px;
}

.right-arrow{
  right:42px;
}

.pagination{
  position:absolute;
  left:60px;
  bottom:40px;
  z-index:50;
  display:flex;
  gap:14px;
}

.dot{
  width:14px;
  height:14px;
  border-radius:50%;
  border:2px solid #fff;
  cursor:pointer;
  transition:0.3s;
}

.dot.active{
  background:#fff;
  transform:scale(1.2);
}

.scroll-down{
  position:absolute;
  bottom:20px;
  left:50%;
  transform:translateX(-50%);
  z-index:50;
  font-size:34px;
  animation:upDown 1.5s infinite;
}

@keyframes upDown{
  0%{
    transform:translate(-50%,0);
  }
  50%{
    transform:translate(-50%,10px);
  }
  100%{
    transform:translate(-50%,0);
  }
}

.sub-content{
  min-height:100vh;
  padding-top:150px;
  text-align:center;
  background:#1a1a1a;
  color:#fff;
}

.sub-content h2{
  font-size:32px;
  font-weight:500;
}

@media(max-width:1280px){
  header{
    padding:0 36px;
  }

  nav ul{
    gap:36px;
  }

  nav ul li a{
    font-size:14px;
  }

  .content.left{
    padding-left:110px;
    padding-right:110px;
  }

  .content.center{
    padding-left:110px;
    padding-right:110px;
  }

  .content-box{
    max-width:620px;
  }

  .left-arrow{
    left:28px;
  }

  .right-arrow{
    right:28px;
  }
}

@media(max-width:1100px){
  header{
    height:64px;
    padding:0 28px;
    background:transparent;
    backdrop-filter:none;
    border:none;
    box-shadow:none;
  }

  .logo img{
    height:300px;
  }

  .menu-btn{
    display:block;
    font-size:26px;
    color:#fff;
    z-index:120;
  }

  nav{
    position:fixed;
    top:0;
    right:0;
    left:auto;
    width:72%;
    max-width:320px;
    height:100vh;
    background:rgba(6,10,16,0.86);
    backdrop-filter:blur(18px);
    -webkit-backdrop-filter:blur(18px);
    display:block;
    margin:0;
    padding:96px 28px 28px;
    border:none;
    box-shadow:-24px 0 60px rgba(0,0,0,0.28);
    transform:translateX(100%);
    transition:transform 0.35s ease;
    overflow:hidden;
  }

  nav.active{
    transform:translateX(0);
    border:none;
    box-shadow:-24px 0 60px rgba(0,0,0,0.28);
  }

  nav ul{
    flex-direction:column;
    gap:0;
    align-items:stretch;
    padding:0;
    background:transparent;
    backdrop-filter:none;
    border:none;
    box-shadow:none;
  }

  nav ul li{
    width:100%;
    border:none;
  }

  nav ul li a{
    display:block;
    width:100%;
    padding:18px 0;
    font-size:17px;
    font-weight:600;
    color:#fff;
    text-align:left;
    letter-spacing:-0.02em;
    border:none;
    background:transparent;
    box-shadow:none;
    text-shadow:none;
    transition:0.25s ease;
  }

  nav ul li a:hover{
    color:#3fa9ff;
    background:transparent;
    transform:translateX(6px);
  }

  .content.left{
    padding-left:76px;
    padding-right:76px;
  }

  .content.center{
    padding-left:76px;
    padding-right:76px;
  }
}

@media(max-width:900px){
  header{
    padding:0 20px;
  }

  .content{
    padding-top:84px;
    padding-bottom:64px;
  }

  .content.left{
    padding-left:64px;
    padding-right:64px;
  }

  .content.center{
    padding-left:64px;
    padding-right:64px;
  }

  .content-box{
    max-width:100%;
  }

  .center-box{
    min-height:calc(100vh - 160px);
  }

  .main-title{
    font-size:32px;
    line-height:1.35;
    margin-bottom:32px;
  }

  .sub-title{
    font-size:18px;
    margin-bottom:14px;
  }

  .first-title span:first-child{
    margin-bottom:180px;
  }

  .arrow{
    width:36px;
    height:36px;
    font-size:24px;
  }

  .left-arrow{
    left:12px;
  }

  .right-arrow{
    right:12px;
  }

  .pagination{
    left:30px;
    bottom:32px;
    gap:12px;
  }

  .dot{
    width:12px;
    height:12px;
  }

  .scroll-down{
    bottom:18px;
    font-size:30px;
  }
}

@media(max-width:480px){
  header{
    padding:0 24px;
  }

  .logo img{
    height:300px;
  }

  .content{
    padding-top:80px;
    padding-bottom:60px;
  }

  .content.left{
    padding-left:58px;
    padding-right:58px;
  }

  .content.center{
    padding-left:58px;
    padding-right:58px;
  }

  .center-box{
    min-height:calc(100vh - 150px);
  }

  .main-title{
    font-size:28px;
    line-height:1.35;
  }

  .sub-title{
    font-size:16px;
  }

  .first-title span:first-child{
    margin-bottom:150px;
  }

  .btn{
    padding:9px 24px;
    font-size:13px;
  }

  .arrow{
    width:30px;
    height:30px;
    font-size:21px;
  }

  .left-arrow{
    left:10px;
  }

  .right-arrow{
    right:10px;
  }
}

@media(max-width:390px){
  header{
    padding:0 20px;
  }

  .logo img{
    height:300px;
  }

  .content.left{
    padding-left:52px;
    padding-right:52px;
  }

  .content.center{
    padding-left:52px;
    padding-right:52px;
  }

  .main-title{
    font-size:25px;
    line-height:1.35;
  }

  .sub-title{
    font-size:15px;
  }

  .first-title span:first-child{
    margin-bottom:130px;
  }

  .arrow{
    width:28px;
    height:28px;
    font-size:20px;
  }

  .left-arrow{
    left:8px;
  }

  .right-arrow{
    right:8px;
  }

  .pagination{
    left:28px;
    bottom:30px;
  }
}