— Two crowns — Same mass, different density — Vertical slider ✓ Slider works — Slider controls crowns — Slider direction correct — Full slider range — Fall animation ✓ Water displacement — Rising water level — Splash effects — Physics correct — Live mass value — Live volume value ✓ Live density value — Live displaced water — Gilded displaces more — Heureka animation ✓ No external deps ✓ Light bg / dark text ✓ Self-contained HTML
Entirely misses the prompt's core requirement — no crowns, no gold vs. gilded comparison, no vertical slider — instead implements a generic buoyancy demo with a horizontal depth slider and a generic red rectangle object.
Entirely misses the prompt's core requirement — no crowns, no gold vs. gilded comparison, no vertical slider — instead implements a generic buoyancy demo with a horizontal depth slider and a generic red rectangle object.