— 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 generic Archimedes buoyancy simulator with solid physics and live readouts, but completely misses the prompt's core requirement: two crowns (pure gold vs. gilded), Archimedes narrative, fall animation, water-level rise, splash effects, Heureka moment, and a vertical slider controlling crown submersion — making it fundamentally off-brief.
Implements a generic Archimedes buoyancy simulator with solid physics and live readouts, but completely misses the prompt's core requirement: two crowns (pure gold vs. gilded), Archimedes narrative, fall animation, water-level rise, splash effects, Heureka moment, and a vertical slider controlling crown submersion — making it fundamentally off-brief.