:root{
  --bg:#0b1220;
  --card:#0f1a2e;
  --text:#eaf0ff;
  --muted:#b9c6e3;
  --line:rgba(255,255,255,.12);
  --accent:#003384;
  --accent2:#4a7ec7;
  --white:#ffffff;
  --shadow: 0 18px 50px rgba(0,0,0,.35);
  --r:16px;
}

*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, "Noto Sans KR", "Apple SD Gothic Neo", Arial, sans-serif;
  background: radial-gradient(1200px 500px at 20% 10%, rgba(74,126,199,.25), transparent 60%),
              radial-gradient(900px 400px at 70% 0%, rgba(0,51,132,.18), transparent 55%),
              var(--bg);
  color:var(--text);
}

a{color:inherit;text-decoration:none}
.container{width:min(1100px, 92vw); margin:0 auto}

.topbar{position:sticky;top:0;z-index:20;background:rgba(11,18,32,.72);backdrop-filter: blur(10px); border-bottom:1px solid var(--line)}
.topbar__inner{display:flex;align-items:center;justify-content:space-between;padding:14px 0}
.brand{display:flex;align-items:center;gap:10px}
.brand__mark{
  width:34px;height:34px;border-radius:10px;
  background:linear-gradient(135deg, var(--accent2), var(--accent));
  display:grid;place-items:center;font-weight:800;color:#06101e
}
.brand__name{font-weight:700;letter-spacing:-.2px}
.nav{display:flex;align-items:center;gap:16px;color:var(--muted)}
.nav a:hover{color:var(--text)}

.btn{
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:12px;padding:12px 16px;font-weight:700;
  border:1px solid var(--line);
  background:rgba(255,255,255,.06);
}
.btn--primary{background:linear-gradient(135deg, rgba(96,165,250,.9), rgba(94,234,212,.85)); color:#06101e; border:none}
.btn--sm{padding:10px 12px;border-radius:10px}

.hero{padding:56px 0 30px}
.hero__grid{display:grid;gap:18px;grid-template-columns: 1.2fr .8fr; align-items:stretch}
@media (max-width: 900px){ .hero__grid{grid-template-columns:1fr} }

.card{
  border:1px solid var(--line);
  background:rgba(15,26,46,.72);
  border-radius:var(--r);
  box-shadow: var(--shadow);
}
.hero__main{padding:26px}
.kicker{display:inline-flex;align-items:center;gap:8px;color:var(--muted);font-weight:700}
.dot{width:10px;height:10px;border-radius:999px;background:var(--accent)}
.h1{font-size:40px;line-height:1.1;margin:10px 0 10px;letter-spacing:-.8px}
.sub{color:var(--muted);font-size:16px;line-height:1.6;margin:0 0 18px}
.hero__cta{display:flex;gap:10px;flex-wrap:wrap}
.hero__side{padding:22px}
.badge{display:inline-flex;gap:8px;align-items:center;padding:8px 12px;border:1px solid var(--line);border-radius:999px;color:var(--muted);font-weight:700}
.stat{margin-top:14px;display:grid;gap:10px}
.stat__row{display:flex;justify-content:space-between;align-items:center;padding:12px 14px;border:1px solid var(--line);border-radius:14px;background:rgba(255,255,255,.04)}
.stat__row b{color:var(--text)}

.section{padding:22px 0 58px}
.section__head{display:flex;justify-content:space-between;align-items:end;gap:12px;margin-bottom:14px}
.section__title{font-size:22px;margin:0;letter-spacing:-.3px}
.section__muted{color:var(--muted);font-size:14px;margin:0}

.grid{display:grid;gap:14px;grid-template-columns:repeat(3, 1fr)}
@media (max-width: 900px){ .grid{grid-template-columns:1fr} }

.course{padding:18px}
.course__top{display:flex;justify-content:space-between;gap:12px;align-items:flex-start}
.course__title{font-size:18px;margin:0 0 6px}
.course__summary{color:var(--muted);margin:0 0 12px;line-height:1.55}
.pills{display:flex;gap:8px;flex-wrap:wrap}
.pill{font-size:12px;color:var(--muted);border:1px solid var(--line);padding:6px 10px;border-radius:999px;background:rgba(255,255,255,.03)}
.meta{display:flex;justify-content:space-between;align-items:center;margin-top:12px;padding-top:12px;border-top:1px solid var(--line);color:var(--muted);font-size:13px}

.form{padding:18px}
.form__grid{display:grid;gap:12px;grid-template-columns:1fr 1fr}
@media (max-width:900px){ .form__grid{grid-template-columns:1fr} }
.input{
  width:100%;padding:12px 12px;border-radius:12px;
  border:1px solid var(--line); background:rgba(255,255,255,.04);
  color:var(--text); outline:none;
}
.textarea{min-height:110px;resize:vertical}
.help{color:var(--muted);font-size:13px;line-height:1.5;margin-top:8px}

.footer{border-top:1px solid var(--line);background:rgba(0,0,0,.14);padding:24px 0 16px}
.footer__grid{display:grid;gap:14px;grid-template-columns:1.2fr .8fr;align-items:start}
@media (max-width: 900px){ .footer__grid{grid-template-columns:1fr} }
.footer__title{font-weight:800}
.footer__muted{color:var(--muted);margin-top:6px}
.footer__box{border:1px solid var(--line);border-radius:16px;padding:14px;background:rgba(255,255,255,.03)}
.footer__label{color:var(--muted);font-weight:700;font-size:13px}
.footer__phone{font-size:18px;font-weight:900;margin:6px 0 8px}
.footer__link{color:var(--accent);font-weight:800}
.footer__copy{color:var(--muted);font-size:12px;margin-top:14px}