:root{
  --bg:#f4f1ea;
  --bg-alt:#eee8df;
  --surface:#ffffff;
  --surface-soft:#fbf8f2;
  --text:#171412;
  --muted:#635d57;
  --border:rgba(18,18,18,.12);
  --brand:#a51624;
  --brand-2:#65111a;
  --olive:#566a55;
  --gold:#b9822b;
  --radius:8px;
  --shadow:0 24px 70px rgba(28,22,18,.12);
  --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:linear-gradient(180deg, #fbfaf7 0%, var(--bg) 44%, #fff 100%);
  color:var(--text);
  font-family:var(--sans);
  line-height:1.6;
  overflow-x:hidden;
}

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(255,252,247,.88);
  border-bottom:1px solid rgba(18,18,18,.08);
  box-shadow:0 10px 32px rgba(28,22,18,.045);
}

.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:6px;
}
.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:8px;
  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:8px;
  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:rgba(255,255,255,.56);
  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; overflow:hidden}

.eyebrow{
  display:flex; align-items:center; gap:10px;
  font-size:.86rem;
  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:0;
  line-height:1.12;
  margin:0 0 10px;
}
h1{font-size:4.15rem}
h2{font-size:2.55rem}
h3{font-size:1.45rem; font-family:var(--sans); letter-spacing:0}
h4{font-size:1.05rem; font-family:var(--sans); margin:14px 0 8px}

.lead{font-size:1.08rem}

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

.section{padding:92px 0}
.section-alt{
  position:relative;
  isolation:isolate;
  overflow:hidden;
  background:linear-gradient(180deg, rgba(238,232,223,.72), rgba(251,248,242,.72));
}
.section-alt:before{
  content:none;
}
.section-alt:after{
  content:none;
}
.intro-band{
  position:relative;
  isolation:isolate;
  overflow:hidden;
  padding-top:70px;
}
.intro-band:before{
  content:none;
}
.intro-band:after{
  content:none;
}
.section-head{max-width:780px; margin-bottom:28px}

.hero{padding:72px 0 34px}
.home-hero{
  position:relative;
  isolation:isolate;
  overflow:hidden;
  padding:92px 0 76px;
  background:
    linear-gradient(135deg, rgba(165,22,36,.09), rgba(255,255,255,.22) 48%, rgba(86,106,85,.08)),
    linear-gradient(180deg, rgba(255,255,255,.72), rgba(244,241,234,.60));
  border-bottom:1px solid rgba(28,22,18,.08);
}
.home-hero:before{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  height:1px;
  background:linear-gradient(90deg, transparent, rgba(165,22,36,.32), transparent);
}
.home-hero:after{
  content:none;
}
.home-hero > .container,
.intro-band > .container,
.section-alt > .container,
.cta > .container{
  position:relative;
  z-index:1;
}
.hero-grid{
  display:grid;
  grid-template-columns:1.1fr .9fr;
  gap:42px;
  align-items:center;
}
.hero-copy{max-width:700px}
.home-hero-grid{
  display:grid;
  grid-template-columns:minmax(0, 1.04fr) minmax(340px, .78fr);
  gap:64px;
  align-items:center;
}
.hero-copy .eyebrow{
  display:inline-flex;
  width:auto;
  padding:6px 10px;
  border:1px solid rgba(165,22,36,.16);
  background:rgba(255,255,255,.64);
  border-radius:999px;
}
.hero-copy .lead{
  max-width:620px;
  font-size:1.18rem;
  color:rgba(23,20,18,.74);
}
.hero-cta{display:flex; gap:12px; flex-wrap:wrap; margin:22px 0 18px}
.hero-cta .btn-outline{
  background:#fff;
  color:var(--brand-2);
  border:1px solid rgba(165,22,36,.42);
  box-shadow:0 16px 36px rgba(28,22,18,.10);
}
.hero-cta .btn-outline:hover{
  background:rgba(165,22,36,.08);
  border-color:rgba(165,22,36,.58);
}
.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,.10);
  background:rgba(255,255,255,.72);
  border-radius:8px;
  padding:16px 16px;
  box-shadow:0 18px 40px rgba(28,22,18,.07);
}
.metric-num{font-family:var(--serif); font-weight:700; font-size:1.65rem}
.metric-label{color:rgba(18,18,18,.72); font-size:.95rem}

.instructor-panel{
  position:relative;
  display:grid;
  grid-template-columns:minmax(0, .96fr);
  gap:0;
  justify-content:end;
  padding:0;
}
.instructor-panel:before{
  content:"";
  position:absolute;
  inset:20px 6px 56px 42px;
  z-index:-1;
  pointer-events:none;
  border:1px solid rgba(165,22,36,.14);
  border-radius:8px;
  background:rgba(255,255,255,.48);
  box-shadow:0 30px 80px rgba(28,22,18,.10);
}
.instructor-panel:after{
  content:none;
}
.instructor-photo-wrap{
  position:relative;
  width:70%;
  justify-self:center;
  overflow:hidden;
  padding:10px;
  border:1px solid rgba(165,22,36,.18);
  border-radius:8px;
  background:#fff;
  box-shadow:0 28px 70px rgba(28,22,18,.16);
}
.instructor-photo-wrap:before{
  content:"";
  position:absolute;
  inset:10px;
  border:1px solid rgba(255,255,255,.78);
  pointer-events:none;
  z-index:1;
}
.instructor-photo{
  width:100%;
  aspect-ratio:4 / 5;
  object-fit:cover;
  object-position:center top;
  filter:grayscale(100%);
  border-radius:6px;
}
.instructor-card{
  width:88%;
  justify-self:center;
  margin:-28px auto 0;
  position:relative;
  z-index:1;
  background:rgba(255,255,255,.96);
  border:1px solid rgba(18,18,18,.12);
  border-left:4px solid var(--brand);
  border-radius:8px;
  padding:24px 24px 22px;
  box-shadow:0 22px 54px rgba(28,22,18,.14);
}
.instructor-card .eyebrow{
  color:var(--brand-2);
  font-size:.78rem;
  font-weight:900;
}
.instructor-card h2{font-size:2.05rem}
.instructor-card .muted{color:rgba(18,18,18,.78)}
.instructor-profile-lines{
  font-size:.98rem;
  line-height:1.72;
}

.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}

.course-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit, minmax(230px,1fr));
  gap:16px;
}
.course-card{
  border:1px solid rgba(18,18,18,.10);
  background:rgba(255,255,255,.82);
  border-radius:8px;
  padding:22px;
  min-height:100%;
  box-shadow:0 16px 42px rgba(28,22,18,.07);
}
.course-kicker{
  display:inline-flex;
  align-items:center;
  min-height:28px;
  padding:4px 9px;
  margin-bottom:14px;
  background:rgba(165,22,36,.09);
  color:var(--brand-2);
  border:1px solid rgba(165,22,36,.18);
  border-radius:6px;
  font-size:.88rem;
  font-weight:800;
}
.course-card h3{font-size:1.24rem}
.course-facts{
  display:grid;
  gap:10px;
  margin:18px 0 0;
}
.course-facts div{
  display:grid;
  grid-template-columns:52px minmax(0,1fr);
  gap:10px;
  align-items:start;
  border-top:1px solid rgba(18,18,18,.08);
  padding-top:10px;
}
.course-facts dt{
  color:rgba(18,18,18,.58);
  font-size:.84rem;
  font-weight:800;
}
.course-facts dd{
  margin:0;
  color:rgba(18,18,18,.82);
  font-size:.92rem;
  font-weight:600;
}

.card{
  border:1px solid rgba(18,18,18,.10);
  background:rgba(255,255,255,.82);
  border-radius:var(--radius);
  padding:22px;
  box-shadow:0 16px 42px rgba(28,22,18,.07);
}
.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:5px;
  background:rgba(165,22,36,.12);
  border:1px solid rgba(165,22,36,.24);
  box-shadow:0 10px 24px rgba(165,22,36,.10);
}
.actions{display:flex; gap:12px; flex-wrap:wrap; margin-top:18px}

.program-stack{
  display:grid;
  gap:16px;
}
.program-tile{
  border:1px solid rgba(18,18,18,.10);
  background:#fff;
  border-radius:8px;
  padding:24px;
  box-shadow:var(--shadow);
}
.program-tile span{
  display:inline-flex;
  margin-bottom:12px;
  color:var(--brand);
  font-size:.86rem;
  font-weight:900;
  letter-spacing:.04em;
}
.program-tile h3{font-size:1.28rem}

.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{
  position:relative;
  isolation:isolate;
  overflow:hidden;
  padding:72px 0;
}
.cta:before{
  content:none;
}
.cta-inner{
  display:flex; align-items:center; justify-content:space-between; gap:18px;
  border:1px solid rgba(255,255,255,.18);
  background:linear-gradient(135deg, #65111a, #a51624);
  color:#fff;
  border-radius:8px;
  padding:30px 30px;
  box-shadow:var(--shadow);
}
.cta-inner .muted,
.cta-inner .eyebrow{color:rgba(255,255,255,.76)}
.cta-inner .btn{
  background:#fff;
  color:var(--brand-2);
  border-color:rgba(255,255,255,.5);
  box-shadow:none;
}

.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:8px;
  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:8px;
  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:8px;
  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;
}
.contact-panel{
  padding:28px;
}
.contact-panel h2{margin-bottom:8px}
.contact-phone{
  display:inline-block;
  margin:4px 0 12px;
  font-family:var(--serif);
  font-size:2.15rem;
  font-weight:900;
  color:var(--brand);
}
.contact-phone:hover{color:var(--brand-2)}
.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:1; transform:none}
.revealed{opacity:1 !important; transform:none !important}

@media (max-width: 980px){
  .hero-grid{grid-template-columns:1fr; gap:22px}
  .home-hero-grid{grid-template-columns:1fr; gap:28px}
  .instructor-panel{justify-content:stretch}
  .instructor-photo-wrap{width:min(320px, 72%)}
  .instructor-photo{aspect-ratio:4 / 5}
  .course-grid{grid-template-columns:repeat(2, minmax(0,1fr))}
  .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}
  h1{font-size:2.72rem}
  h2{font-size:2rem}
}

@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:8px;
    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}
  .course-grid{grid-template-columns:1fr}
  .instructor-panel{padding:12px 0 0 10px}
  .instructor-panel:before{inset:0 -10px 34px 20px}
  .instructor-panel:after{right:-34px; bottom:56px; width:82px; height:82px; border-width:14px}
  .instructor-card{margin:-28px 14px 0; padding:20px 18px 18px}
  .instructor-card h2{font-size:1.76rem}
  h1{font-size:2.28rem}
  h2{font-size:1.72rem}
}