:root{
  --brand:#091f3a;
  --bg:#ffffff;
  --text:#0f172a;
  --sub:#64748b;
  --line:#e5e7eb;
  --card:#ffffff;
  --shadow: 0 14px 36px rgba(15, 23, 42, .08);
  --radius: 18px;

  --container: 1120px;
  --header-h: 64px;
}

*{ box-sizing:border-box; }
html,body{ height:100%; }
body{
  margin:0;
  font-family: Pretendard, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  overflow-x:hidden;
}

a{ color:inherit; text-decoration:none; }
img{ display:block; max-width:100%; }
button{ font-family:inherit; }

.container{
  width:min(var(--container), calc(100% - 40px));
  margin: 0 auto;
}

/* -----------------------------
   Header
----------------------------- */
.site-header{
  position:fixed;
  top:0; left:0; right:0;
  height: var(--header-h);
  z-index: 1000;
  background: rgba(255,255,255,.75);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(229,231,235,.65);
}

.header-inner{
  height: var(--header-h);
  display:flex;
  align-items:center;
  justify-content: space-around; /* 사용자 규칙 */
  gap: 16px;
}

.brand{
  display:flex;
  align-items:center;
  gap:10px;
}
.brand-logo{
  height: 40px;
  width:auto;
}

.gnb{
  display:flex;
  align-items:center;
  gap: 18px;
}
.gnb a{
  font-weight: 600;
  font-size: 14px;
  color: rgba(15,23,42,.78);
}
.gnb a:hover{ color: var(--brand); }

.burger{
  display:none;
  width: 44px; height: 44px;
  border: none;
  border-radius: 12px;
  background: none;
  cursor:pointer;
  position:relative;
}
.burger span{
  position:absolute;
  left: 12px;
  right: 12px;
  height: 2px;
  background: var(--brand);
  border-radius: 2px;
  transition: .25s ease;
}
.burger span:nth-child(1){ top: 15px; }
.burger span:nth-child(2){ top: 21px; }
.burger span:nth-child(3){ top: 27px; }

.burger.is-open span:nth-child(1){ top: 21px; transform: rotate(45deg); }
.burger.is-open span:nth-child(2){ opacity:0; transform: translateX(6px); }
.burger.is-open span:nth-child(3){ top: 21px; transform: rotate(-45deg); }

/* Mobile dropdown nav */
.mnav{
  position:absolute;
  top: var(--header-h);
  left:0; right:0;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(229,231,235,.8);
  transform: translateY(-8px);
  opacity: 0;
  pointer-events:none;
  transition: .22s ease;
}
.mnav.is-open{
  transform: translateY(0);
  opacity: 1;
  pointer-events:auto;
}
.mnav-inner{
  padding: 14px 0 18px;
  display:flex;
  flex-direction: column;
  gap: 14px;
}

.mnav-top{
  display:flex;
  justify-content: space-around;
  gap: 10px;
}
.mnav-icon{
  width: 44px; height: 44px;
  display:grid;
  place-items:center;
  border-radius: 14px;
  border: 1px solid rgba(229,231,235,.9);
  background: none;
  color: var(--brand);
}

.mnav-links{
  display:flex;
  justify-content: space-around;
  gap: 10px;
}
.mnav-links a{
  font-weight:700;
  font-size: 14px;
  padding: 10px 12px;
  border-radius: 12px;
  color: rgba(15,23,42,.78);
}
.mnav-links a:hover{
  background: rgba(9,31,58,.06);
  color: var(--brand);
}

/* body scroll lock */
/* body.nav-open{
  overflow: hidden;
} */

/* -----------------------------
   Buttons
----------------------------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap: 8px;
  padding: 12px 16px;
  border-radius: 14px;
  border: 1px solid transparent;
  font-weight: 700;
  font-size: 14px;
  cursor:pointer;
  transition: .18s ease;
  user-select:none;
}
.btn--sm{
  padding: 10px 12px;
  border-radius: 12px;
  font-size: 13px;
}
.btn--primary{
  background: var(--brand);
  color: #fff;
  box-shadow: 0 14px 26px rgba(9,31,58,.22);
}
.btn--primary:hover{ transform: translateY(-1px); }

.btn--ghost{
  background: rgba(255,255,255,.14);
  color: #fff;
  border-color: rgba(255,255,255,.35);
}
.btn--ghost:hover{ background: rgba(255,255,255,.20); }

.btn--outline{
  background: #fff;
  color: var(--brand);
  border-color: rgba(9,31,58,.22);
}
.btn--outline:hover{
  background: rgba(9,31,58,.06);
}

/* -----------------------------
   HERO Sticky Stage
   - "fixed처럼 보이고 아래가 위로 올라오는" 연출
----------------------------- */
.hero-stage{
  position: relative;
  /* 아래 컨텐츠가 올라올 수 있게 stage 자체는 여유 높이를 둔다 */
  height: 170vh;
}
.hero-sticky{
  position: sticky;
  top: 0;
  height: 100vh;
  overflow: hidden;
}

.hero-slider{
  height: 100%;
  position: relative;
}

.hero-slide{
  position:absolute;
  inset:0;
  opacity: 0;
  transform: scale(1.02);
  transition: opacity .55s ease, transform .85s ease;
  background: #0b1220;
  background-size: cover;
  background-position: center;
}
.hero-slide.is-active{
  opacity: 1;
  transform: scale(1);
}

.hero-overlay{
  position:absolute;
  inset:0;
  background: linear-gradient(90deg, rgba(9,31,58,.72) 0%, rgba(9,31,58,.38) 46%, rgba(9,31,58,.18) 100%);
}

.hero-content{
  position: relative;
  height: 100%;
  padding-top: calc(var(--header-h) + 40px);
  padding-bottom: 90px;
  display:flex;
  flex-direction: column;
  justify-content: center;
  align-items:flex-start;
  gap: 14px;
}

.hero-eyebrow{
  color: rgba(255,255,255,.86);
  font-weight: 700;
  letter-spacing: .2px;
  margin:0;
}
.hero-title{
  margin:0;
  color:#fff;
  font-size: clamp(32px, 4vw, 54px);
  line-height: 1.06;
  letter-spacing: -0.6px;
}
.hero-desc{
  margin:0;
  max-width: 560px;
  color: rgba(255,255,255,.86);
  font-size: 16px;
  line-height: 1.65;
}
.accent{ color: #ffffff; }
.hero-cta{
  display:flex;
  gap: 10px;
  margin-top: 10px;
  flex-wrap: wrap;
}

.hero-nav{
  position:absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 46px;
  height: 46px;
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,.25);
  background: rgba(15,23,42,.18);
  backdrop-filter: blur(10px);
  color: #fff;
  display:grid;
  place-items:center;
  cursor:pointer;
  z-index: 5;
  transition: .18s ease;
}
.hero-nav:hover{ background: rgba(15,23,42,.30); }
.hero-prev{ left: 16px; }
.hero-next{ right: 16px; }

.hero-dots{
  position:absolute;
  left: 50%;
  bottom: 24px;
  transform: translateX(-50%);
  display:flex;
  gap: 8px;
  z-index: 6;
}
.hero-dot{
  width: 8px; height: 8px;
  border-radius: 50%;
  background: rgba(255,255,255,.45);
  border: 1px solid rgba(255,255,255,.25);
  cursor:pointer;
}
.hero-dot.is-active{
  width: 26px;
  border-radius: 999px;
  background: rgba(255,255,255,.92);
}

.hero-scrollhint{
  position:absolute;
  left: 50%;
  bottom: 62px;
  transform: translateX(-50%);
  z-index: 6;
  color: rgba(255,255,255,.88);
  display:flex;
  gap: 8px;
  align-items:center;
  font-weight: 700;
  font-size: 13px;
  opacity: .92;
}

/* -----------------------------
   Content that "comes up"
----------------------------- */
.content-start{
  position: relative;
  margin-top: -28vh; /* 아래 컨텐츠가 hero 위로 올라오는 느낌 */
  padding-top: 28vh;
  background: var(--bg);
  border-top-left-radius: 28px;
  border-top-right-radius: 28px;
  box-shadow: 0 -24px 60px rgba(15,23,42,.10);
}

.section{
  padding: 72px 0;
}
.section.alt{
  background: #f6f7fb;
}
.section-head{
  margin-bottom: 24px;
}
.section-title{
  margin:0;
  font-size: 30px;
  letter-spacing: -0.5px;
  color: var(--text);
}
.section-sub{
  margin: 10px 0 0;
  color: var(--sub);
  line-height: 1.6;
}

.service-grid{
  display:grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 14px;
  margin-top: 18px;
}

.service-card{
  border: 1px solid rgba(229,231,235,.9);
  background: #fff;
  border-radius: var(--radius);
  padding: 18px 16px;
  box-shadow: 0 10px 24px rgba(15,23,42,.06);
  transition: .18s ease;
  min-height: 200px;
  display:flex;
  flex-direction: column;
  gap: 10px;
}
.service-card:hover{
  transform: translateY(-2px);
  border-color: rgba(9,31,58,.18);
  box-shadow: 0 18px 36px rgba(15,23,42,.09);
}
.service-card .icon{
  width: 44px; height: 44px;
  border-radius: 14px;
  display:grid;
  place-items:center;
  background: rgba(9,31,58,.08);
  color: var(--brand);
  border: 1px solid rgba(9,31,58,.10);
}
.service-card h4{
  margin:0;
  font-size: 16px;
}
.service-card p{
  margin:0;
  color: var(--sub);
  font-size: 13px;
  line-height: 1.55;
}
.service-card .more{
  margin-top: auto;
  font-weight: 800;
  font-size: 13px;
  color: var(--brand);
  display:flex;
  align-items:center;
  gap: 8px;
}

.split{
  display:grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 28px;
  align-items:center;
}

.media-box{
  height: 620px;
  border-radius: 22px;
  background: #eaeef6;
  background-size: cover;
  background-position: center;
  border: 1px solid rgba(229,231,235,.9);
  box-shadow: var(--shadow);
}

.steps{
  list-style:none;
  padding:0;
  margin: 18px 0 0;
  display:flex;
  flex-direction: column;
  gap: 12px;
}
.steps li{
  display:flex;
  gap: 12px;
  padding: 14px 14px;
  border-radius: 18px;
  border: 1px solid rgba(229,231,235,.9);
  background: #fff;
  box-shadow: 0 10px 24px rgba(15,23,42,.05);
}
.badge{
  min-width: 42px;
  height: 42px;
  border-radius: 14px;
  display:grid;
  place-items:center;
  font-weight: 900;
  color: #fff;
  background: var(--brand);
}

.feature-grid{
  display:grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin-top: 18px;
}
.feature{
  border-radius: 20px;
  border: 1px solid rgba(229,231,235,.9);
  background:#fff;
  padding: 18px 16px;
  box-shadow: 0 10px 24px rgba(15,23,42,.06);
}
.feature i{
  color: var(--brand);
  font-size: 18px;
}
.feature h4{
  margin: 10px 0 6px;
  font-size: 16px;
}
.feature p{
  margin:0;
  color: var(--sub);
  font-size: 13px;
  line-height: 1.6;
}

.logo-wall{
  display:grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin-top: 18px;
}
.logo-tile{
  height: 76px;
  border-radius: 18px;
  border: 1px dashed rgba(9,31,58,.18);
  background: rgba(255,255,255,.75);
}

.cta{
  padding: 72px 0;
  background: linear-gradient(135deg, rgba(9,31,58,1) 0%, rgba(9,31,58,.92) 65%, rgba(9,31,58,.86) 100%);
  color:#fff;
}
.cta-inner{
  display:grid;
  grid-template-columns: 1.2fr .8fr;
  gap: 18px;
  align-items: stretch;
}
.cta-copy h3{
  margin:0;
  font-size: 28px;
  letter-spacing: -0.4px;
}
.cta-copy p{
  margin: 10px 0 0;
  color: rgba(255,255,255,.86);
  line-height: 1.65;
}
.cta-actions{
  margin-top: 16px;
  display:flex;
  gap: 10px;
  flex-wrap: wrap;
}
.cta-card{
  border: 1px solid rgba(255,255,255,.18);
  border-radius: 22px;
  background: rgba(255,255,255,.08);
  backdrop-filter: blur(10px);
  padding: 16px;
}
.cta-mini{
  display:flex;
  flex-wrap: wrap;
  gap: 8px;
}
.pill{
  display:inline-flex;
  align-items:center;
  gap: 8px;
  padding: 10px 12px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,.22);
  color: rgba(255,255,255,.92);
  font-weight: 700;
  font-size: 13px;
}
.cta-note{
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid rgba(255,255,255,.18);
}
.cta-note p{
  margin: 8px 0 0;
  color: rgba(255,255,255,.86);
  line-height: 1.6;
}

.footer{
  background: #070f1e;
  color: rgba(255,255,255,.82);
  padding: 34px 0 18px;
}
.footer-inner{
  display:flex;
  align-items:flex-start;
  justify-content: space-around;
  gap: 16px;
  flex-wrap: wrap;
}
.footer-logo{ height: 46px; }
.footer-desc{ margin: 10px 0 0; font-size: 13px; color: rgba(255,255,255,.72); }
.footer-links{
  display:flex;
  gap: 14px;
  flex-wrap: wrap;
  align-items:center;
}
.footer-links a{ font-weight: 700; font-size: 13px; color: rgba(255,255,255,.78); }
.footer-links a:hover{ color: #fff; }
.footer-sns{
  display:flex;
  gap: 12px;
}
.footer-sns a{
  width: 40px; height: 40px;
  display:grid;
  place-items:center;
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,.16);
  background: rgba(255,255,255,.06);
  color: #fff;
}
.footer-bottom{
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px solid rgba(255,255,255,.12);
  font-size: 12px;
  color: rgba(255,255,255,.62);
}

/* -----------------------------
   Reveal animation (IO)
----------------------------- */
.reveal{
  opacity: 0;
  transform: translateY(18px);
  transition: opacity .7s ease, transform .7s ease;
}
.reveal.is-in{
  opacity: 1;
  transform: translateY(0);
}

/* -----------------------------
   Responsive
----------------------------- */
@media (max-width: 1100px){
  .service-grid{ grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .feature-grid{ grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .logo-wall{ grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .split{ grid-template-columns: 1fr; }
  .media-box{ height: 320px; }
}

@media (max-width: 860px){
  .gnb{ display:none; }
  .burger{ display:inline-block; }
  .hero-content{
    padding-top: calc(var(--header-h) + 26px);
    justify-content: flex-end;
    padding-bottom: 120px;
  }
  .hero-desc{ max-width: 520px; font-size: 15px; }
  .hero-nav{ display:none; } /* 모바일은 심플하게 */
  .cta-inner{ grid-template-columns: 1fr; }
}

@media (max-width: 420px){
  .container{ width: min(var(--container), calc(100% - 28px)); }
  .hero-title{ font-size: 30px; }
  .content-start{
    border-radius: 10px;
    padding-top: 1vh;
  }
}
/* -----------------------------
   Mobile Nav (refine)
----------------------------- */
.mnav-inner{
  padding: 14px 0 18px;
  display:flex;
  flex-direction: column;
  gap: 14px;
}

.mnav-top{
  display:flex;
  justify-content: space-around;
  gap: 10px;
}

.mnav-icon{
  width: 44px; height: 44px;
  display:grid;
  place-items:center;
  border-radius: 14px;
  border: 1px solid rgba(229,231,235,.9);
  background: #fff;
  color: var(--brand);
}

.mnav-group{
  border: 1px solid rgba(229,231,235,.9);
  background: #fff;
  border-radius: 18px;
  box-shadow: 0 10px 24px rgba(15,23,42,.06);
  padding: 14px;
}

.mnav-title{
  margin: 0 0 10px;
  font-weight: 900;
  font-size: 13px;
  color: rgba(15,23,42,.72);
  letter-spacing: .2px;
}

.mnav-services{
  display:grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.mnav-pill{
  display:flex;
  align-items:center;
  justify-content:center;
  gap: 8px;
  padding: 12px 10px;
  border-radius: 14px;
  border: 1px solid rgba(229,231,235,.9);
  background: rgba(9,31,58,.04);
  color: var(--brand);
  font-weight: 900;
  font-size: 13px;
}

.mnav-pill i{ font-size: 14px; }

.mnav-links{
  margin-top: 12px;
  display:flex;
  justify-content: space-around;
  gap: 10px;
}

.mnav-links a{
  font-weight: 800;
  font-size: 13px;
  padding: 10px 12px;
  border-radius: 12px;
  color: rgba(15,23,42,.75);
  background: rgba(15,23,42,.04);
}

.mnav-links a:hover{
  background: rgba(9,31,58,.08);
  color: var(--brand);
}

.mnav-bottom{
  display:grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.mnav-link{
  display:flex;
  align-items:center;
  gap: 10px;
  padding: 12px 12px;
  border-radius: 14px;
  border: 1px solid rgba(229,231,235,.9);
  background: #fff;
  font-weight: 800;
  font-size: 13px;
  color: rgba(15,23,42,.78);
}

.mnav-link i{ color: var(--brand); }

/* 작은 화면에서는 1열로 */
@media (max-width: 420px){
  .mnav-services{ grid-template-columns: 1fr; }
  .mnav-bottom{ grid-template-columns: 1fr; }
}