:root{
  --bg:#fbf7f0;
  --bg-alt:#f3ede4;
  --surface:#ffffff;
  --text:#121212;
  --muted:#5a5a5a;
  --border:rgba(18,18,18,.12);
  --brand:#b01818;
  --brand-2:#7f0f0f;
  /* ✅ Keep content & colors, but remove rounded corners on rectangular UI boxes */
  --radius:0px;
  --shadow:0 30px 80px rgba(18,18,18,.10);
  --max:1180px;
  --serif:"Cormorant Garamond", serif;
  --sans:"Noto Sans KR", system-ui, -apple-system, Segoe UI, Roboto, "Apple SD Gothic Neo", "Malgun Gothic", sans-serif;
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  background:radial-gradient(1200px 600px at 20% -10%, rgba(176,24,24,.14), transparent 60%),
             radial-gradient(900px 500px at 90% 0%, rgba(0,0,0,.06), transparent 55%),
             var(--bg);
  color:var(--text);
  font-family:var(--sans);
  line-height:1.6;
}

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

.container{width:min(var(--max), calc(100% - 48px)); margin:0 auto}

.muted{color:var(--muted)}
.small{font-size:.92rem}

.site-header{
  position:sticky; top:0; z-index:50;
  backdrop-filter:saturate(140%) blur(10px);
  background:rgba(251,247,240,.74);
  border-bottom:1px solid rgba(18,18,18,.08);
}

.nav{
  display:flex; align-items:center; justify-content:space-between;
  padding:14px 0;
}

.brand{display:flex; align-items:center; gap:12px}
.brand-logo{height:40px; width:auto}

.nav-links{display:flex; align-items:center; gap:18px}
.nav-links a{
  font-size:.98rem;
  padding:8px 10px;
  border-radius:0;
}
.nav-links a:not(.btn):hover{background:rgba(18,18,18,.05)}

.nav-toggle{
  display:none;
  border:1px solid rgba(18,18,18,.14);
  background:rgba(255,255,255,.55);
  width:44px; height:44px;
  border-radius:0;
  padding:10px;
}
.nav-toggle span{display:block; height:2px; background:rgba(18,18,18,.8); margin:6px 0; border-radius:2px}

.btn{
  display:inline-flex; align-items:center; justify-content:center;
  border-radius:0;
  padding:12px 18px;
  background:linear-gradient(180deg, var(--brand), var(--brand-2));
  color:#fff;
  border:1px solid rgba(255,255,255,.18);
  box-shadow:0 16px 30px rgba(176,24,24,.20);
  transition:transform .15s ease, box-shadow .15s ease;
}
.btn .btn-inner{display:inline-flex; gap:8px; align-items:center; font-weight:600}
.btn:hover{transform:translateY(-1px); box-shadow:0 20px 40px rgba(176,24,24,.24)}
.btn:active{transform:translateY(0px)}
.btn-outline{
  background:transparent;
  color:var(--text);
  border:1px solid rgba(18,18,18,.22);
  box-shadow:none;
}
.btn-outline:hover{background:rgba(18,18,18,.05); box-shadow:none}

.btn-sm{padding:10px 14px; font-size:.95rem}

.site-main{min-height:60vh}

.eyebrow{
  display:flex; align-items:center; gap:10px;
  font-size:.92rem;
  letter-spacing:.08em;
  text-transform:uppercase;
  color:rgba(18,18,18,.72);
  margin:0 0 12px;
}
.eyebrow-icon{width:18px; height:18px; opacity:.9}

h1,h2,h3,h4{
  font-family:var(--serif);
  letter-spacing:-.02em;
  line-height:1.12;
  margin:0 0 10px;
}
h1{font-size:clamp(2.2rem, 4.8vw, 3.6rem)}
h2{font-size:clamp(1.7rem, 3.1vw, 2.5rem)}
h3{font-size:1.45rem; font-family:var(--sans); letter-spacing:-.02em}
h4{font-size:1.05rem; font-family:var(--sans); margin:14px 0 8px}

.lead{font-size:1.08rem}

.accent{color:var(--brand)}

.section{padding:84px 0}
.section-alt{background:linear-gradient(180deg, rgba(255,255,255,.0), rgba(255,255,255,.70) 25%, rgba(255,255,255,.0))}
.section-head{max-width:780px; margin-bottom:28px}

.hero{padding:72px 0 34px}
.hero-grid{
  display:grid;
  grid-template-columns:1.1fr .9fr;
  gap:42px;
  align-items:center;
}
.hero-copy{max-width:700px}
.hero-cta{display:flex; gap:12px; flex-wrap:wrap; margin:22px 0 18px}
.hero-metrics{
  display:grid;
  grid-template-columns:repeat(3, minmax(0,1fr));
  gap:12px;
  margin-top:22px;
}
.metric{
  border:1px solid rgba(18,18,18,.12);
  background:rgba(255,255,255,.55);
  border-radius:0;
  padding:14px 14px;
}
.metric-num{font-family:var(--serif); font-weight:700; font-size:1.65rem}
.metric-label{color:rgba(18,18,18,.72); font-size:.95rem}

.hero-visual{position:relative; min-height:360px}
.glass-card{
  background:rgba(255,255,255,.62);
  border:1px solid rgba(18,18,18,.12);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  overflow:hidden;
}
.glass-top{
  display:flex; gap:8px;
  padding:14px 18px;
  border-bottom:1px solid rgba(18,18,18,.08);
}
.dot{width:10px; height:10px; border-radius:50%; background:rgba(18,18,18,.22)}
.glass-body{padding:18px}
.pill{
  display:inline-flex;
  padding:9px 12px;
  border-radius:0;
  border:1px solid rgba(18,18,18,.14);
  background:rgba(255,255,255,.70);
  margin:6px 6px 0 0;
  font-weight:600;
}
.divider{height:1px; background:rgba(18,18,18,.10); margin:14px 0}

.orb{
  position:absolute;
  border-radius:999px;
  filter:blur(0px);
  opacity:.95;
  pointer-events:none;
}
.orb-1{
  width:190px; height:190px;
  background:radial-gradient(circle at 30% 30%, rgba(176,24,24,.40), rgba(176,24,24,.04));
  right:-40px; top:-30px;
}
.orb-2{
  width:240px; height:240px;
  background:radial-gradient(circle at 40% 40%, rgba(0,0,0,.18), rgba(0,0,0,0));
  left:-60px; bottom:-70px;
}

.cards-3{display:grid; grid-template-columns:repeat(3, minmax(0,1fr)); gap:16px}
.cards-2{display:grid; grid-template-columns:repeat(2, minmax(0,1fr)); gap:16px}

.card{
  border:1px solid rgba(18,18,18,.12);
  background:rgba(255,255,255,.58);
  border-radius:var(--radius);
  padding:22px;
  box-shadow:0 14px 34px rgba(18,18,18,.06);
}
.card-accent{
  background:linear-gradient(180deg, rgba(176,24,24,.10), rgba(255,255,255,.58));
}
.card .link{display:inline-block; margin-top:12px; color:var(--brand); font-weight:700}

.split{
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:34px;
  align-items:start;
}
.checklist{list-style:none; padding:0; margin:16px 0 0}
.checklist li{padding-left:28px; position:relative; margin:10px 0}
.checklist li:before{
  content:"";
  position:absolute; left:0; top:8px;
  width:18px; height:18px;
  border-radius:0;
  background:rgba(176,24,24,.18);
  border:1px solid rgba(176,24,24,.35);
  box-shadow:0 10px 24px rgba(176,24,24,.12);
}
.actions{display:flex; gap:12px; flex-wrap:wrap; margin-top:18px}

.timeline{
  border:1px solid rgba(18,18,18,.12);
  background:rgba(255,255,255,.55);
  border-radius:var(--radius);
  padding:18px;
  box-shadow:var(--shadow);
}
.t-item{
  display:grid;
  grid-template-columns:88px 90px 1fr;
  gap:12px;
  padding:14px 12px;
  border-radius:0;
}
.t-item + .t-item{border-top:1px solid rgba(18,18,18,.10)}
.t-item span{font-weight:700; color:rgba(18,18,18,.74)}
.t-item b{font-weight:800}
.t-item em{color:rgba(18,18,18,.70); font-style:normal}

.cta{padding:72px 0}
.cta-inner{
  display:flex; align-items:center; justify-content:space-between; gap:18px;
  border:1px solid rgba(18,18,18,.12);
  background:linear-gradient(135deg, rgba(176,24,24,.14), rgba(255,255,255,.60));
  border-radius:0;
  padding:26px 26px;
  box-shadow:var(--shadow);
}

.page-hero{padding:70px 0 26px}
.note{
  margin-top:18px;
  border-left:4px solid rgba(176,24,24,.30);
  padding:10px 14px;
  background:rgba(255,255,255,.55);
  border-radius:0;
}

.track-grid{
  display:grid;
  grid-template-columns:repeat(2, minmax(0,1fr));
  gap:16px;
}
.track{
  border:1px solid rgba(18,18,18,.12);
  background:rgba(255,255,255,.58);
  border-radius:var(--radius);
  padding:22px;
}
.track-top{display:flex; align-items:center; gap:10px; margin-bottom:10px}
.track-icon{width:22px; height:22px; opacity:.9}
.track ul{margin:10px 0 0; padding-left:18px}
.track li{margin:8px 0}

.accordion details{
  border:1px solid rgba(18,18,18,.12);
  background:rgba(255,255,255,.58);
  border-radius:0;
  padding:6px 14px;
  margin:12px 0;
  overflow:hidden;
}
.accordion summary{
  cursor:pointer;
  list-style:none;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  padding:14px 6px;
}
.accordion summary::-webkit-details-marker{display:none}
.accordion summary span{font-weight:900}
.accordion summary em{font-style:normal; color:rgba(18,18,18,.68)}
.acc-body{
  padding:0 6px 14px;
  border-top:1px solid rgba(18,18,18,.10);
}
.acc-body ul{margin:10px 0 0; padding-left:18px}
.acc-body li{margin:6px 0}

.course-meta{
  display:grid;
  grid-template-columns:repeat(3, minmax(0,1fr));
  gap:14px;
  margin-top:16px;
}
.meta{
  border:1px solid rgba(18,18,18,.12);
  background:rgba(255,255,255,.55);
  border-radius:0;
  padding:16px;
}

.form-wrap{
  border:1px solid rgba(18,18,18,.12);
  background:rgba(255,255,255,.60);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  overflow:hidden;
}
.form-actions{
  display:flex; flex-wrap:wrap; gap:14px;
  align-items:center; justify-content:space-between;
  padding:18px 18px;
  border-bottom:1px solid rgba(18,18,18,.10);
}
.iframe-shell{height:860px; background:rgba(0,0,0,.04)}
.iframe-shell iframe{
  width:100%;
  height:100%;
  border:0;
  background:#fff;
}

.site-footer{
  padding:56px 0 30px;
  border-top:1px solid rgba(18,18,18,.10);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr;
  gap:18px;
  align-items:start;
}
.footer-logo{height:38px; width:auto; margin-bottom:10px}
.footer-col h4{margin:0 0 10px; font-family:var(--sans)}
.footer-col a{display:block; padding:6px 0; color:rgba(18,18,18,.80)}
.footer-col a:hover{color:var(--brand)}
.footer-bottom{margin-top:18px; border-top:1px solid rgba(18,18,18,.08); padding-top:16px}

[data-reveal]{opacity:0; transform:translateY(10px); transition:opacity .6s ease, transform .6s ease}
.revealed{opacity:1 !important; transform:none !important}

@media (max-width: 980px){
  .hero-grid{grid-template-columns:1fr; gap:22px}
  .split{grid-template-columns:1fr}
  .cards-3{grid-template-columns:1fr}
  .cards-2{grid-template-columns:1fr}
  .track-grid{grid-template-columns:1fr}
  .course-meta{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .cta-inner{flex-direction:column; align-items:flex-start}
  .hero{padding-top:54px}
  .hero-metrics{grid-template-columns:1fr}
}

@media (max-width: 820px){
  .nav-toggle{display:inline-flex; align-items:center; justify-content:center}
  .nav-links{
    position:fixed;
    inset:68px 14px auto 14px;
    background:rgba(251,247,240,.94);
    border:1px solid rgba(18,18,18,.12);
    border-radius:0;
    padding:14px;
    box-shadow:var(--shadow);
    display:none;
    flex-direction:column;
    align-items:stretch;
  }
  .nav-links a{padding:12px 12px; border-radius:0}
  .nav-links.open{display:flex}
  .brand-logo{height:36px}
}