:root{--ink:#17202a;--muted:#5d6b7a;--line:#dce4ee;--soft:#f5f8fb;--teal:#0f766e;--blue:#1d4ed8;--warn:#b42318;--white:#fff}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Noto Sans KR",Arial,sans-serif;color:var(--ink);background:var(--white);line-height:1.65}
a{color:inherit}
.site-header{position:sticky;top:0;z-index:20;display:flex;align-items:center;justify-content:space-between;gap:24px;padding:14px clamp(18px,4vw,56px);background:rgba(255,255,255,.93);border-bottom:1px solid var(--line);backdrop-filter:blur(12px)}
.brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none;font-weight:800;letter-spacing:0}
.brand svg{width:32px;height:32px;fill:#102a43}
.brand svg path+path{fill:none;stroke:#fff;stroke-width:2.2;stroke-linecap:round}
nav{display:flex;align-items:center;gap:6px;flex-wrap:wrap;justify-content:flex-end}
.nav-link,.lang{padding:8px 10px;border-radius:6px;text-decoration:none;color:#445466;font-size:14px;font-weight:650}
.nav-link:hover,.nav-link.active,.lang{background:#edf7f6;color:#0f766e}
.hero{display:grid;grid-template-columns:minmax(0,1.02fr) minmax(300px,.98fr);gap:42px;align-items:center;padding:clamp(48px,8vw,96px) clamp(20px,5vw,72px) 44px;background:linear-gradient(180deg,#f8fbff 0%,#fff 100%)}
.hero-copy{max-width:760px}
.eyebrow{margin:0 0 14px;color:var(--teal);font-weight:800;text-transform:uppercase;font-size:13px;letter-spacing:.08em}
h1{margin:0;font-size:clamp(36px,6vw,70px);line-height:1.08;letter-spacing:0;color:#102033}
.lead{margin:22px 0 0;font-size:clamp(18px,2vw,23px);color:#4c5c6d;max-width:720px}
.actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.button{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:0 18px;border-radius:7px;text-decoration:none;font-weight:800;border:1px solid #18364f}
.button.primary{background:#102a43;color:#fff}
.button.ghost{background:#fff;color:#102a43}
.hero-media img{display:block;width:100%;border-radius:8px;border:1px solid var(--line);box-shadow:0 22px 50px rgba(15,35,55,.16)}
.content{padding:28px clamp(20px,5vw,72px) 72px;max-width:1180px;margin:0 auto}
.content h2{font-size:clamp(25px,3vw,38px);line-height:1.18;margin:48px 0 16px;letter-spacing:0}
.content>p{font-size:18px;color:#465666;max-width:860px}
.grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;margin-top:26px}
.card,.plan{border:1px solid var(--line);border-radius:8px;padding:24px;background:#fff;box-shadow:0 10px 24px rgba(16,42,67,.06)}
.card h3,.plan h3{margin:0 0 10px;font-size:20px;line-height:1.25}
.card p,.plan p{margin:0;color:#536273}
.plan strong{display:block;color:var(--teal);margin-bottom:12px}
.plan a{display:inline-flex;margin-top:18px;color:var(--blue);font-weight:800;text-decoration:none;border-bottom:1px dotted var(--blue)}
.steps{display:grid;gap:14px;margin-top:26px}
.step{display:grid;grid-template-columns:48px 1fr;gap:16px;align-items:start;border:1px solid var(--line);border-radius:8px;padding:18px;background:#fff}
.step span{display:flex;align-items:center;justify-content:center;width:42px;height:42px;border-radius:50%;background:#102a43;color:#fff;font-weight:900}
.step h3{margin:0 0 4px}.step p{margin:0;color:#536273}
.faq-list{display:grid;gap:12px;margin-top:26px}
details{border:1px solid var(--line);border-radius:8px;background:#fff;padding:18px}
summary{cursor:pointer;font-weight:800}
details p{color:#536273;margin:12px 0 0}
.term{border-bottom:1px dotted #111;cursor:help;text-decoration:none}
.tip{position:fixed;z-index:50;max-width:320px;background:#111;color:#fff;border-radius:6px;padding:9px 11px;font-size:13px;line-height:1.45;box-shadow:0 12px 26px rgba(0,0,0,.25);pointer-events:none}
footer{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:28px clamp(18px,4vw,56px);border-top:1px solid var(--line);background:#f7fafc;color:#536273;flex-wrap:wrap}
footer .brand svg{width:28px;height:28px}
footer p{margin:0}
footer a{color:var(--teal);font-weight:800;text-decoration:none}
@media (max-width:860px){
  .site-header{position:static;align-items:flex-start;flex-direction:column}
  nav{justify-content:flex-start}
  .hero{grid-template-columns:1fr;padding-top:40px}
  .hero-media{order:-1}
  h1{font-size:38px}
  .grid{grid-template-columns:1fr}
}