— 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
Implements a competent generic Archimedes buoyancy simulator with three tabs and correct physics, but completely misses the prompt's core requirements: no two crowns, no crown-fall animation, no vertical slider controlling submersion, no splash effects, no Heureka moment, dark background instead of light, and no mass live-value display.
Implements a competent generic Archimedes buoyancy simulator with three tabs and correct physics, but completely misses the prompt's core requirements: no two crowns, no crown-fall animation, no vertical slider controlling submersion, no splash effects, no Heureka moment, dark background instead of light, and no mass live-value display.