:root{
  --bg:#1c1a17; --ink:#f3eee6; --muted:#a89f92; --panel:rgba(28,26,23,.72);
  --accent:#c4a574; --glow:#8fad9a; --line:rgba(243,238,230,.12);
  --font-display:"Source Serif 4",Georgia,serif;
  --font-body:"Source Sans 3",system-ui,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:auto}
body.demo9-3d{
  margin:0;font-family:var(--font-body);color:var(--ink);line-height:1.65;
  background:#141210;min-height:100vh;overflow-x:hidden;position:relative;
}
a{color:var(--accent);text-decoration:none}
a:hover{color:#dfc396}

.scene-canvas{
  position:fixed;inset:0;width:100%;height:100%;
  z-index:0;pointer-events:none;display:block;
}
.scene-fallback{
  position:fixed;inset:0;z-index:0;pointer-events:none;
  background:
    radial-gradient(ellipse 55% 45% at 60% 45%,rgba(196,165,116,.16),transparent 60%),
    linear-gradient(165deg,#1a1714,#0f0e0c);
  display:none;
}
body.no-webgl .scene-fallback{display:block}
body.no-webgl .scene-canvas{display:none}

.site-header,.scroll-journey,.site-footer,.wrap,.scroll-progress{position:relative;z-index:2}
.site-header{
  position:sticky;top:0;z-index:40;
  background:rgba(20,18,16,.7);backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
}
.header-inner{
  max-width:1180px;margin:0 auto;padding:1rem 1.25rem;
  display:flex;align-items:center;justify-content:space-between;gap:1rem;
}
.brand{display:flex;gap:.75rem;align-items:center;text-decoration:none;color:inherit}
.brand-mark{
  width:42px;height:42px;border-radius:8px;
  background:linear-gradient(160deg,#d2b48c,#8b6914);
  color:#1c1a17;display:grid;place-items:center;font-weight:700;font-size:.72rem;
  font-family:var(--font-body);box-shadow:inset 0 1px 0 rgba(255,255,255,.25);
}
.brand strong{font-family:var(--font-display);font-size:1.15rem;font-weight:600;letter-spacing:-.02em}
.brand small{display:block;color:var(--muted);font-size:.68rem;letter-spacing:.12em;text-transform:uppercase;font-weight:600}
.nav-toggle{
  display:none;border:1px solid var(--line);background:var(--panel);
  color:var(--ink);border-radius:8px;padding:.45rem .85rem;font-family:var(--font-body);
}
.nav{display:flex;flex-wrap:wrap;gap:.15rem;justify-content:flex-end;max-width:74%}
.nav-link{
  text-decoration:none;color:var(--muted);font-size:.74rem;font-weight:500;
  padding:.4rem .55rem;border-radius:8px;transition:color .2s,background .2s;
}
.nav-link.is-active,.nav-link:hover{
  color:var(--ink);background:rgba(196,165,116,.12);
  box-shadow:inset 0 0 0 1px rgba(196,165,116,.28);
}

.scroll-journey{display:block}
.chapter{
  min-height:100vh;min-height:100dvh;
  display:grid;align-items:center;
  padding:6rem 1.25rem;
  position:relative;
}
.chapter-inner{
  max-width:1180px;margin:0 auto;width:100%;
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,.9fr);gap:2rem;align-items:center;
}
.chapter:nth-child(even) .chapter-inner{grid-template-columns:minmax(0,.9fr) minmax(0,1fr)}
.chapter:nth-child(even) .chapter-copy{order:2}
.chapter:nth-child(even) .chapter-spacer{order:1}
.chapter-spacer{min-height:1px}
.chapter-copy{
  max-width:32rem;
  padding:1.55rem 1.45rem;
  background:rgba(22,20,17,.78);
  border:1px solid rgba(243,238,230,.1);
  border-radius:16px;
  backdrop-filter:blur(12px);
  box-shadow:0 20px 50px rgba(0,0,0,.35);
  opacity:.4;transform:translateY(20px);
  transition:opacity .45s ease, transform .45s ease;
}
.chapter.is-active .chapter-copy{opacity:1;transform:none}
.chapter-kicker{
  margin:0 0 .65rem;font-size:.7rem;letter-spacing:.14em;text-transform:uppercase;
  color:var(--glow);font-weight:700;
}
.chapter-brand{
  margin:0 0 .55rem;font-family:var(--font-display);
  font-size:clamp(2.4rem,6.5vw,4.4rem);line-height:.98;letter-spacing:-.03em;font-weight:600;
}
.chapter h2{
  margin:0 0 .8rem;font-family:var(--font-display);font-weight:600;
  font-size:clamp(1.55rem,3.4vw,2.35rem);line-height:1.2;letter-spacing:-.02em;
}
.chapter p{margin:0 0 1rem;color:var(--muted);font-size:1.02rem}
.chapter .chapter-cta{display:flex;flex-wrap:wrap;gap:.55rem;margin-top:.35rem}
.scroll-hint{
  position:absolute;bottom:1.5rem;left:50%;transform:translateX(-50%);
  font-size:.7rem;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);
  display:flex;flex-direction:column;align-items:center;gap:.35rem;
}
.scroll-hint::after{content:"";width:1px;height:26px;background:linear-gradient(var(--accent),transparent)}
.chapter:not(:first-child) .scroll-hint{display:none}

.scroll-progress{
  position:fixed;right:1.1rem;top:50%;transform:translateY(-50%);
  z-index:30;display:flex;flex-direction:column;gap:.45rem;
}
.scroll-progress button{
  width:8px;height:8px;border-radius:50%;border:1px solid rgba(243,238,230,.35);
  background:transparent;padding:0;cursor:pointer;
}
.scroll-progress button.is-active{background:var(--accent);border-color:var(--accent);transform:scale(1.2)}
.scroll-progress-bar{
  position:fixed;left:0;top:0;height:2px;width:0%;z-index:50;
  background:linear-gradient(90deg,var(--accent),var(--glow));
  pointer-events:none;
}

.btn{
  display:inline-flex;align-items:center;
  background:var(--accent);color:#1c1a17;padding:.85rem 1.2rem;border-radius:10px;
  font-weight:700;text-decoration:none;font-size:.9rem;
  box-shadow:0 10px 28px rgba(0,0,0,.28);
  transition:transform .2s,filter .2s;
}
.btn:hover{filter:brightness(1.05);transform:translateY(-1px);color:#1c1a17}
.btn-ghost{background:transparent;color:var(--ink);border:1px solid var(--line);box-shadow:none}
.btn-ghost:hover{border-color:rgba(143,173,154,.5);color:var(--glow)}

.mvp-inline{display:grid;gap:.75rem;margin:1rem 0}
.mvp-inline article{padding-top:.65rem;border-top:1px solid var(--line)}
.mvp-inline h3{margin:0 0 .25rem;font-family:var(--font-display);font-size:1.15rem;color:var(--accent);font-weight:600}
.mvp-inline p{margin:0;font-size:.92rem}
.course-mini{display:grid;gap:.5rem;margin-top:.7rem}
.course-mini a{
  color:inherit;padding:.6rem 0;border-bottom:1px solid var(--line);
  display:flex;justify-content:space-between;gap:1rem;font-size:.95rem;
}
.course-mini a:hover{color:var(--accent)}
.chapter-links{display:grid;gap:.5rem;margin-top:.9rem}
.chapter-links a{
  display:flex;justify-content:space-between;align-items:center;
  padding:.7rem .85rem;border-radius:10px;border:1px solid var(--line);
  color:inherit;background:rgba(255,255,255,.03);font-size:.92rem;
}
.chapter-links a:hover{border-color:rgba(196,165,116,.4)}
.chapter-links span{color:var(--muted);font-size:.78rem}
.notice-mini article{padding:.65rem 0;border-bottom:1px solid var(--line)}
.notice-mini time{display:block;font-size:.75rem;color:var(--glow);margin-bottom:.2rem}
.notice-mini h3{margin:0 0 .2rem;font-family:var(--font-display);font-size:1.1rem;font-weight:600}
.notice-mini p{margin:0;font-size:.88rem}

.wrap{max-width:1180px;margin:0 auto;padding:2.5rem 1.25rem 4.5rem}
.page-hero{padding:2rem 0 1.25rem;margin-bottom:1.75rem;border-bottom:1px solid var(--line)}
.page-hero h1{margin:0 0 .4rem;font-family:var(--font-display);font-weight:600;font-size:clamp(2rem,4.5vw,3.2rem)}
.page-hero p{margin:0;color:var(--muted)}
.lead{font-size:1.06rem;color:var(--muted);max-width:60ch}
.section{margin-top:3rem}
.section-head{display:flex;justify-content:space-between;align-items:end;gap:1rem;margin-bottom:1.1rem}
.section-head h2{margin:0;font-family:var(--font-display);font-size:clamp(1.45rem,3vw,2.05rem);font-weight:600}
.section-head a{font-size:.9rem;color:var(--glow);font-weight:600}

.mvp{display:grid;grid-template-columns:repeat(3,1fr);gap:1.25rem;margin-top:1.25rem}
.mvp article{padding:1.25rem 0 0;border-top:1px solid var(--line)}
.mvp h3{margin:0 0 .5rem;font-family:var(--font-display);font-size:1.25rem;color:var(--accent)}
.course-grid,.people{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:1rem}
.course,.person,.notice{
  background:rgba(255,255,255,.04);border:1px solid var(--line);border-radius:14px;padding:1.15rem;
}
.course h3,.person h3,.notice h3{margin:0 0 .4rem;font-family:var(--font-display)}
.course ul{margin:.55rem 0 0;padding-left:1.1rem;color:var(--muted);font-size:.92rem}
.meta,.fineprint,.note{color:var(--muted)}
.role{display:inline-block;margin-top:.3rem;font-size:.78rem;color:var(--glow);font-weight:600}
.data-table{width:100%;border-collapse:collapse;background:rgba(0,0,0,.2);border:1px solid var(--line);border-radius:14px;overflow:hidden}
.data-table th,.data-table td{padding:.85rem 1rem;border-bottom:1px solid var(--line);text-align:left}
.data-table th{background:rgba(196,165,116,.1);font-size:.72rem;letter-spacing:.06em;text-transform:uppercase;color:var(--accent)}
.amt{font-weight:600;color:var(--glow)}
.notes{color:var(--muted);padding-left:1.2rem}
.stat-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:1rem;margin:1.5rem 0}
.stat{text-align:center;padding:1.15rem .8rem;border:1px solid var(--line);border-radius:14px;background:rgba(0,0,0,.18)}
.stat strong{display:block;font-family:var(--font-display);font-size:1.9rem;color:var(--accent)}
.stat span{color:var(--muted);font-size:.8rem}
.feature-list{list-style:none;padding:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:.85rem}
.feature-list li{background:rgba(0,0,0,.18);border:1px solid var(--line);border-radius:14px;padding:1rem}
.feature-list strong{display:block;margin-bottom:.25rem;font-family:var(--font-display)}
.feature-list span{color:var(--muted);font-size:.92rem}
.chip{display:inline-block;padding:.28rem .55rem;margin:.2rem;border-radius:999px;font-size:.76rem;background:rgba(143,173,154,.12);border:1px solid rgba(143,173,154,.28);color:#c5d6cb}
.syllabus-block{margin:1.5rem 0;padding:1.35rem;border-radius:16px;border:1px solid var(--line);background:rgba(0,0,0,.18)}
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:1.25rem}
.result-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:1rem}
.notice time{display:block;font-size:.8rem;color:var(--accent);margin-bottom:.3rem}
.status{font-size:.72rem;padding:.2rem .55rem;border-radius:999px;background:rgba(143,173,154,.12);color:var(--glow)}
.status-almost-full{background:rgba(196,165,116,.15);color:var(--accent)}
.status-filling-fast{background:rgba(143,173,154,.15);color:#b6cbbd}
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:1.25rem}
.contact-cta{border-radius:16px;padding:1.45rem;border:1px solid var(--line);background:linear-gradient(145deg,rgba(196,165,116,.12),rgba(143,173,154,.08))}
.steps,.rules{padding-left:1.2rem}
.rules li{margin:.55rem 0}
.dept{margin:2rem 0}
.dept h2{font-family:var(--font-display);font-size:1.35rem;margin:0 0 1rem;color:var(--glow)}
.site-footer{border-top:1px solid var(--line);padding:2rem 1.25rem;color:var(--muted);background:rgba(14,12,10,.8)}
.footer-inner{max-width:1180px;margin:0 auto;display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap;font-size:.86rem}

@media (max-width:900px){
  .nav{display:none}
  .nav.open{
    display:flex;flex-direction:column;position:absolute;right:1rem;top:68px;
    background:rgba(24,22,19,.97);border:1px solid var(--line);border-radius:14px;
    padding:.8rem;width:min(300px,90vw);max-height:70vh;overflow:auto;
  }
  .nav-toggle{display:inline-flex}
  .mvp,.two-col,.contact-grid,.chapter-inner{grid-template-columns:1fr}
  .chapter:nth-child(even) .chapter-copy{order:0}
  .chapter-spacer{display:none}
  .chapter{padding:5rem 1.1rem 4rem}
}
@media (prefers-reduced-motion:reduce){
  .chapter-copy{transition:none;opacity:1;transform:none}
}

.nav-more{position:relative}
.nav-dropdown{display:none;position:absolute;right:0;top:calc(100% + .45rem);min-width:230px;max-height:70vh;overflow:auto;z-index:70;padding:.45rem}
.nav-more.open .nav-dropdown{display:flex;flex-direction:column;gap:.1rem}
.nav-more-btn{cursor:pointer}
.person{display:flex;flex-direction:column;align-items:flex-start;gap:.55rem}
.person-photo{
  width:100%;aspect-ratio:1/1;max-height:220px;
  border-radius:12px;overflow:hidden;
  background:linear-gradient(145deg,rgba(128,128,128,.18),rgba(128,128,128,.08));
  border:1px solid rgba(128,128,128,.2);
  display:grid;place-items:center;
  margin-bottom:.15rem;
}
.person-photo span{
  font-size:1.6rem;font-weight:700;letter-spacing:.06em;opacity:.55;
}
.person h3{margin:0}

.nav-more-btn{
  font-size:.74rem;color:var(--muted);padding:.4rem .55rem;border-radius:8px;
  border:0;background:transparent;font-family:var(--font-body);font-weight:500;
}
.nav-more.is-active .nav-more-btn,.nav-more-btn:hover{
  color:var(--ink);background:rgba(196,165,116,.12);
  box-shadow:inset 0 0 0 1px rgba(196,165,116,.28);
}
.nav-dropdown{background:rgba(24,22,19,.97);border:1px solid var(--line);border-radius:14px}
.nav-dropdown .nav-link{display:block}