.home-portals .portal-scene,.home-portals .science-stage {
  position:relative;display:block;width:100%;aspect-ratio:16/10;margin:0;overflow:hidden;
}
.portal-scene { background:#3d3d49 url('./assets/home-art/cathedral-oil.jpg') center/cover; }
.home-portal--music .portal-scene { background:#59414b url('./assets/cosmos-violin/violin-poster.jpg') center/cover; }
.portal-scene canvas { position:absolute;inset:0;display:block;width:100%;height:100%;opacity:0; }
.portal-scene-ready canvas { opacity:1; }
.portal-scene::after { content:'';position:absolute;inset:0;pointer-events:none;box-shadow:inset 0 0 45px #16152630;background:linear-gradient(180deg,transparent 70%,#302b3522); }
.home-portals .science-motion-toggle { display:none!important; }
.home-portal--games .portal-scene { background:#364449 url('./assets/dream-city/city-mist-sage-20261017.webp') center/cover; }
.home-art .home-portals .home-portal--games { display:grid;grid-template-columns:minmax(0,1.8fr) minmax(220px,1fr);grid-column:1/-1;min-height:0;background:linear-gradient(130deg,rgba(47,64,67,.95),rgba(64,69,62,.94)); }
.home-art .home-portal--games .home-portal-copy { display:flex;flex-direction:column;justify-content:center;padding:32px;text-shadow:none; }
.home-art .home-portal--games .home-portal-copy h2 { color:#f6eadb; }
.home-art .home-portal--games .home-portal-copy p { color:#e0e0e8; }
@media(max-width:820px) {
  .home-art .home-portals .home-portal--games { display:flex;grid-column:auto; }
  .home-art .home-portal--games .home-portal-copy { padding:20px 22px 23px; }
}