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button{display:flex;flex-direction:column;align-items:center;gap:6px;border:1px solid var(--line);border-radius:4px;background:#fff;padding:8px;min-width:118px;cursor:pointer}.edit3d-objects button img{width:104px;height:74px;object-fit:contain;mix-blend-mode:multiply}.edit3d-objects button span{font-size:10px;color:var(--muted);text-align:center;line-height:1.3}.edit3d-objects button[aria-selected=true]{border-color:var(--accent);background:var(--accent-soft)}.edit3d-objects button[aria-selected=true] span{color:var(--accent)}.edit3d-stages{display:grid;grid-template-columns:1fr 1fr;background:var(--faint)}.edit3d-stage{padding:15px;display:flex;flex-direction:column;min-width:0;margin:0}.edit3d-stage .image-tag{font-size:8px;color:var(--muted)}.edit3d-stage .image-tag.accent{color:var(--accent)}.edit3d-view{width:100%;aspect-ratio:4/3;margin:9px 0 12px;border:1px solid var(--line);border-radius:3px;background:#f4f4f4;position:relative}.edit3d-view 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h1{font-size:clamp(36px,4.1vw,58px);line-height:1.12;letter-spacing:-.045em;max-width:960px;margin:0 auto}.intro-grid h1 em{color:inherit}.intro-aside{margin:22px auto 0;max-width:750px}.paper-title{display:none}.intro-copy{font-size:16px;line-height:1.65;color:var(--muted);max-width:680px;margin:0 auto}.resource-links{display:flex;justify-content:center;gap:9px;flex-wrap:wrap;margin-top:20px}.resource-links button,.resource-links a{border:1px solid #bfbfbf;border-radius:5px;padding:8px 15px;font-size:13px;color:var(--ink);background:#fff;display:inline-flex;gap:12px;align-items:center}.resource-links button:hover:not(:disabled),.resource-links a:hover{border-color:var(--accent);color:var(--accent);background:var(--accent-soft)}.resource-links button span{font:9px var(--mono);color:var(--muted);border-left:1px solid var(--line);padding-left:10px}.film-open{display:inline-flex;margin-top:14px;color:var(--accent);font-size:12px}.film-open .muted{font:9px var(--mono);color:var(--muted)}.play-small{border:1px solid var(--line);border-radius:50%;width:19px;height:19px;display:grid;place-items:center;font-size:8px}.authors{margin:23px auto 0;text-align:center;color:#555;font-size:13px}.authors summary{list-style:none;cursor:pointer}.authors summary::-webkit-details-marker{display:none}.authors summary>span{color:var(--accent);margin-left:5px}.authors .plus{display:inline-block;margin-left:4px}.authors[open] summary{margin-bottom:12px}.authors p{font-size:12px;line-height:1.7}.authors .affiliations{color:var(--muted);font-size:11px;margin-top:7px}.authors sup{font-size:9px;margin-left:1px}.worlds{margin-top:0}.world-stage{position:relative;aspect-ratio:1.95;border-radius:6px;overflow:hidden;background:#f1f1f1;border:1px solid var(--line)}.world-stage>video{height:100%;width:100%;object-fit:cover}.scene-shade{position:absolute;inset:0;background:linear-gradient(180deg,#0e1c150d,#0e1c158c);pointer-events:none}.scene-top{position:absolute;top:18px;left:20px;right:20px;display:flex;justify-content:space-between;align-items:center}.scene-pill{font:10px var(--mono);letter-spacing:.04em;color:#fff;background:#222222b8;border-radius:4px;padding:7px 10px}.scene-pill .live-dot{display:inline-block;width:5px;height:5px;margin-right:6px;border-radius:50%;background:#ddd}.live-dot{display:inline-block;width:6px;height:6px;background:var(--accent);border-radius:50%;margin-right:7px}.glass-button{background:#fff;color:var(--ink);font-size:12px;border-radius:4px;padding:8px 12px}.scene-bottom{position:absolute;left:24px;right:24px;bottom:23px;display:flex;align-items:flex-end;justify-content:space-between;color:#fff}.scene-index{font-size:10px}.scene-bottom 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