/* home2.css — immersive homepage: live-data hero + atlas index.
   Hero uses a deliberate dark palette (constant in both themes); the body
   sections below inherit the site theme tokens so they follow light/ink. */

.home-immersive {
  /* modality / data-cluster colors — shared by the UMAP and the plate accents */
  --c-rna:#5b8def; --c-atac:#22b6a2; --c-hic:#8b6be0;
  --c-spatial:#d98f2e; --c-multi:#e0655a; --c-seq:#3f9d6a; --c-ric:#c14b8a;
  /* brighter variants for the dark hero canvas */
  --g-rna:#5b8def; --g-atac:#35d0ba; --g-hic:#9b7be8;
  --g-spatial:#f2b45b; --g-multi:#f27a6e; --g-seq:#7ad9a0;
  --ease-out:cubic-bezier(.16,1,.3,1);
}
/* hero sits flush under the sticky masthead */
.home-immersive .page__body { padding-top: 0; }

/* ── HERO ─────────────────────────────────────────────────────────── */
.h2-hero{
  --h-ink:#eaf0fb; --h-mute:#8b97ad; --h-faint:#59657c; --h-line:rgba(180,200,235,.14);
  position:relative; min-height:calc(100svh - 3.4rem); display:flex; flex-direction:column;
  color:var(--h-ink); overflow:hidden; isolation:isolate;
  background:
    radial-gradient(120% 80% at 78% 6%, #0d1730 0%, transparent 55%),
    radial-gradient(90% 70% at 10% 94%, #0a1226 0%, transparent 50%),
    linear-gradient(160deg,#0a0f1c,#070a12);
}
.h2-umap{position:absolute;inset:0;width:100%;height:100%;z-index:0;opacity:.9}
.h2-grain{position:absolute;inset:0;z-index:1;pointer-events:none;opacity:.5;
  background-image:radial-gradient(rgba(255,255,255,.03) .5px,transparent .5px);background-size:3px 3px;
  mask-image:linear-gradient(180deg,transparent,#000 30%,#000 70%,transparent)}
.h2-scrim{position:absolute;inset:0;z-index:1;pointer-events:none;
  background:linear-gradient(180deg,rgba(7,10,18,.5) 0%,rgba(7,10,18,.12) 28%,rgba(7,10,18,.32) 68%,rgba(7,10,18,.85) 100%)}
.h2-frame{position:absolute;z-index:2;inset:clamp(12px,2vw,26px);border:1px solid var(--h-line);pointer-events:none}
.h2-frame::before,.h2-frame::after{content:"";position:absolute;width:9px;height:9px;border:1px solid rgba(180,200,235,.4)}
.h2-frame::before{left:-1px;top:-1px;border-right:0;border-bottom:0}
.h2-frame::after{right:-1px;bottom:-1px;border-left:0;border-top:0}
.h2-coord{position:absolute;z-index:3;right:clamp(1.4rem,4vw,3.4rem);top:clamp(1.4rem,3vw,2.4rem);
  font-family:var(--ff-mono);font-size:.76rem;letter-spacing:.06em;color:var(--h-faint)}
@media(max-width:640px){.h2-coord{display:none}}

.h2-center{position:relative;z-index:3;flex:1;display:flex;flex-direction:column;justify-content:center;
  padding:clamp(2rem,5vw,4rem) clamp(1.6rem,5vw,4.5rem);max-width:1160px;width:100%;margin:0 auto}
.h2-eyebrow{font-family:var(--ff-mono);font-size:.8rem;letter-spacing:.2em;text-transform:uppercase;
  color:var(--g-atac);margin-bottom:1.3rem;display:flex;align-items:center;gap:.7rem}
.h2-eyebrow::before{content:"";width:34px;height:1px;background:currentColor;opacity:.6}
.h2-title{font-family:var(--ff-serif);font-weight:600;letter-spacing:-.01em;color:var(--h-ink);
  font-size:clamp(2.3rem,6.6vw,5.2rem);line-height:1.05;margin:0;text-wrap:balance;max-width:15ch}
.h2-title i{font-style:italic;font-weight:500;color:var(--h-mute)}
.h2-title .glow{color:transparent;background:linear-gradient(92deg,var(--g-atac),var(--g-rna) 60%,var(--g-hic));
  -webkit-background-clip:text;background-clip:text}
.h2-lede{margin:1.6rem 0 0;max-width:46ch;color:var(--h-mute);font-size:clamp(1rem,1.5vw,1.18rem);line-height:1.65}
.h2-lede b{color:var(--h-ink);font-weight:600}
.h2-ctarow{display:flex;flex-wrap:wrap;gap:.9rem;margin-top:2.2rem}
.h2-cta{display:inline-flex;align-items:center;gap:.6rem;padding:.85em 1.5em;border-radius:3px;
  font-size:.95rem;font-weight:500;text-decoration:none;border:1px solid transparent;cursor:pointer;
  transition:background .25s,border-color .25s,color .25s}
.h2-cta .ar{transition:transform .35s var(--ease-out)}
.h2-cta:hover .ar{transform:translateX(4px)}
.h2-cta--solid{background:var(--h-ink);color:#0a0f1c}
.h2-cta--solid:hover{background:#fff}
.h2-cta--ghost{border-color:var(--h-line);color:var(--h-ink)}
.h2-cta--ghost:hover{border-color:rgba(180,200,235,.5);background:rgba(180,200,235,.06)}

.h2-foot{position:relative;z-index:3;display:flex;gap:clamp(1.4rem,5vw,4rem);flex-wrap:wrap;align-items:end;
  padding:clamp(1.1rem,3vw,1.8rem) clamp(1.6rem,5vw,4.5rem) clamp(1.6rem,4vw,2.6rem);
  margin:0 clamp(12px,2vw,26px);border-top:1px solid var(--h-line)}
.h2-stat{display:flex;flex-direction:column;gap:.15rem}
.h2-stat b{font-family:var(--ff-serif);font-size:clamp(1.5rem,3vw,2.1rem);font-weight:500;line-height:1;
  font-variant-numeric:tabular-nums;color:var(--h-ink)}
.h2-stat span{font-family:var(--ff-mono);font-size:.68rem;letter-spacing:.12em;text-transform:uppercase;color:var(--h-faint)}
.h2-scrollcue{margin-left:auto;font-family:var(--ff-mono);font-size:.68rem;letter-spacing:.14em;text-transform:uppercase;color:var(--h-faint);display:flex;align-items:center;gap:.5rem}
.h2-scrollcue::after{content:"↓";animation:h2bob 1.8s var(--ease-out) infinite}
@keyframes h2bob{0%,100%{transform:translateY(0)}50%{transform:translateY(4px)}}

/* ── BODY SECTIONS (theme-aware via site tokens) ──────────────────── */
.h2-sec{padding:clamp(3.5rem,8vw,7rem) 0}
.h2-sechead{display:flex;align-items:flex-end;justify-content:space-between;gap:1.5rem;flex-wrap:wrap;margin-bottom:2.4rem}
.h2-label{font-family:var(--ff-mono);font-size:.74rem;letter-spacing:.18em;text-transform:uppercase;color:var(--c-ink-faint);margin-bottom:.7rem}
.h2-h2{font-family:var(--ff-serif);font-weight:600;font-size:clamp(1.7rem,3.4vw,2.6rem);line-height:1.12;margin:0;letter-spacing:-.01em;color:var(--c-ink)}
.h2-h2 i{font-style:italic;font-weight:500;color:var(--c-ink-mute)}
.h2-aside{font-size:.94rem;color:var(--c-ink-mute);max-width:30ch}

.h2-atlas{border-top:1px solid var(--c-line)}
.h2-plate{display:grid;grid-template-columns:auto auto minmax(0,1.3fr) minmax(0,1.7fr) auto;gap:clamp(1rem,3vw,2.2rem);align-items:center;
  padding:clamp(1.1rem,2.4vw,1.7rem) clamp(.6rem,1.5vw,1rem);border-bottom:1px solid var(--c-line);
  text-decoration:none;color:inherit;position:relative;transition:background .3s var(--ease-out)}
.h2-plate:hover{background:var(--c-paper-soft)}
.h2-plate__no{font-family:var(--ff-mono);font-size:.82rem;color:var(--c-ink-faint)}
.h2-glyph{width:64px;height:64px;border:1px solid var(--c-paper-edge);border-radius:3px;background:var(--c-paper-soft);flex:none}
.h2-plate__main{display:flex;flex-direction:column;gap:.3rem;min-width:0}
.h2-plate__name{font-family:var(--ff-serif);font-size:clamp(1.2rem,2.3vw,1.55rem);font-weight:600;display:flex;align-items:baseline;gap:.6rem;color:var(--c-ink)}
.h2-plate__en{font-family:var(--ff-mono);font-size:.7rem;letter-spacing:.12em;text-transform:uppercase;color:var(--c-ink-mute)}
.h2-plate__desc{font-size:.92rem;color:var(--c-ink-mute)}
.h2-plate__tools{font-family:var(--ff-mono);font-size:.78rem;color:var(--c-ink-faint);line-height:1.7;min-width:0}
.h2-plate__go{font-family:var(--ff-mono);font-size:.72rem;letter-spacing:.1em;text-transform:uppercase;color:var(--dotc,var(--c-brand));white-space:nowrap;transition:transform .35s var(--ease-out)}
.h2-plate:hover .h2-plate__go{transform:translateX(5px)}
.h2-plate::before{content:"";position:absolute;left:0;top:0;bottom:0;width:2px;background:var(--dotc,var(--c-brand));transform:scaleY(0);transition:transform .35s var(--ease-out)}
.h2-plate:hover::before{transform:scaleY(1)}
@media(max-width:820px){
  .h2-plate{grid-template-columns:auto 1fr;grid-template-areas:"no main" "glyph tools";row-gap:.8rem}
  .h2-plate__no{grid-area:no}.h2-plate__main{grid-area:main}.h2-glyph{grid-area:glyph}
  .h2-plate__tools{grid-area:tools}.h2-plate__go{display:none}
}

.h2-flow{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--c-line);border:1px solid var(--c-line)}
@media(max-width:760px){.h2-flow{grid-template-columns:1fr 1fr}}
@media(max-width:460px){.h2-flow{grid-template-columns:1fr}}
.h2-step{background:var(--c-paper);padding:1.5rem 1.3rem;display:flex;flex-direction:column;gap:.55rem;min-height:160px}
.h2-step__no{font-family:var(--ff-mono);font-size:.72rem;color:var(--c-ink-faint)}
.h2-step__t{font-family:var(--ff-serif);font-size:1.12rem;font-weight:600;color:var(--c-ink)}
.h2-step__d{font-size:.88rem;color:var(--c-ink-mute);line-height:1.6}
.h2-step code{font-family:var(--ff-mono);font-size:.82em;background:var(--c-paper-soft);padding:.1em .4em;border-radius:3px;color:var(--c-ink-soft)}

.h2-reveal{opacity:0;transform:translateY(22px);transition:opacity .7s var(--ease-out),transform .7s var(--ease-out)}
.h2-reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .h2-reveal{opacity:1;transform:none;transition:none}
  .h2-scrollcue::after{animation:none}
}