presentation-hero{position:fixed;inset:0;display:grid;place-items:center;overflow:hidden;background:var(--cream-base)}presentation-hero thread-scene{opacity:0;transition:opacity var(--t-lento) var(--ease-suave)}presentation-hero[ready=true] thread-scene{opacity:1}presentation-hero brand-mark{opacity:0;transform:translateY(1.4rem);transition:opacity var(--t-lento) var(--ease-suave) .45s,transform var(--t-lento) var(--ease-hilo) .45s}presentation-hero[ready=true] brand-mark{opacity:1;transform:translateY(0)}@media(prefers-reduced-motion:reduce){presentation-hero thread-scene,presentation-hero brand-mark{opacity:1;transform:none;transition:none}}