:root{
  --bg:#0b1020;
  --card:#121a33;
  --text:#e9eefc;
  --muted:#a9b3d1;
  --accent:#6ea8fe;
  --border:rgba(255,255,255,.10);
  --shadow: 0 14px 40px rgba(0,0,0,.40);
  --radius:18px;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Noto Sans KR", sans-serif;
  background: var(--bg);
  color: var(--text);
}

a{color:inherit;text-decoration:none}
.container{max-width:1100px;margin:0 auto;padding:0 18px}
.muted{color:var(--muted)}
.small{font-size:13px}

.header{
  position:sticky; top:0; z-index:10;
  backdrop-filter: blur(10px);
  background: rgba(11,16,32,.70);
  border-bottom:1px solid var(--border);
}
.header__inner{
  display:flex; align-items:center; justify-content:space-between;
  padding:14px 0; gap:14px;
}
.brand__title{font-weight:800; letter-spacing:.2px}
.nav{display:flex; gap:10px; flex-wrap:wrap}
.nav a{
  padding:8px 10px; border-radius:10px; color:var(--muted);
}
.nav a:hover{background:rgba(255,255,255,.06); color:var(--text)}

.btn{
  display:inline-flex; align-items:center; justify-content:center;
  padding:10px 14px; border-radius:12px;
  border:1px solid var(--border);
  background: rgba(255,255,255,.04);
  font-weight:700;
}
.btn--primary{
  border:1px solid rgba(110,168,254,.55);
  background: rgba(110,168,254,.15);
}
.btn--primary:hover{background: rgba(110,168,254,.22)}
.btn--ghost:hover{background: rgba(255,255,255,.08)}

.hero{
  padding:54px 0 26px;
  background:
    radial-gradient(1200px 600px at 20% 10%, rgba(110,168,254,.25), transparent 60%),
    radial-gradient(900px 500px at 80% 0%, rgba(139,255,204,.15), transparent 55%),
    var(--bg);
}
.hero__grid{
  display:grid;
  grid-template-columns: 1.1fr .9fr;
  gap:18px;
  align-items:stretch;
}
@media (max-width:900px){
  .hero__grid{grid-template-columns:1fr}
}

.hero__copy{
  background: rgba(18,26,51,.72);
  border:1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding:26px;
}
.hero__headline{margin:0 0 10px; font-size:44px; line-height:1.1}
@media (max-width:520px){.hero__headline{font-size:34px}}
.hero__lead{margin:0; color:var(--muted); line-height:1.75}
.hero__cta{margin-top:14px; display:flex; gap:10px; flex-wrap:wrap}

.hero__media{
  background: rgba(18,26,51,.72);
  border:1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding:14px;
  display:grid;
  gap:12px;
}
.hero__img{
  width:100%;
  border-radius: 16px;
  border:1px solid var(--border);
  display:block;
}

.section{padding:36px 0}
.section--alt{
  background: rgba(255,255,255,.02);
  border-top:1px solid var(--border);
  border-bottom:1px solid var(--border);
}
.section__header{margin-bottom:14px}
.section__header--tight{margin-bottom:10px}
.section__title{margin:0; font-size:24px}

.split{
  display:grid;
  grid-template-columns: .9fr 1.1fr;
  gap:14px;
  align-items:center;
}
@media (max-width:900px){
  .split{grid-template-columns:1fr}
}
.card__img{
  width:100%;
  border-radius: var(--radius);
  border:1px solid var(--border);
  box-shadow: var(--shadow);
  display:block;
}
.split__copy{
  background: rgba(18,26,51,.72);
  border:1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding:18px;
}

.stack{display:flex; gap:10px; flex-wrap:wrap; margin-top:12px}

.cards{
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap:12px;
}
@media (max-width:900px){
  .cards{grid-template-columns:1fr}
}
.card{
  background: rgba(18,26,51,.72);
  border:1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding:18px;
}
.card h3{margin:0 0 8px}
.card p{margin:0; color:var(--muted); line-height:1.7}

.contact{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap:12px;
  align-items:start;
}
@media (max-width:900px){.contact{grid-template-columns:1fr}}

.contact__box{
  background: rgba(18,26,51,.72);
  border:1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding:18px;
}
.contact__label{color:var(--muted); font-size:13px}
.contact__value{font-size:22px; font-weight:800; margin-top:6px}

.field{display:block; margin:12px 0}
.field span{display:block; color:var(--muted); font-size:13px; margin-bottom:6px}
.field input{
  width:100%;
  padding:12px;
  border-radius:12px;
  border:1px solid var(--border);
  background: rgba(255,255,255,.04);
  color: var(--text);
  outline:none;
}
.check{display:flex; gap:10px; align-items:flex-start; margin:10px 0; color:var(--muted); font-size:13px}
.check input{margin-top:3px}

.footer{padding:24px 0}
.footer__inner{border-top:1px solid var(--border); padding-top:16px}