— 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
Completely misses the prompt's core requirements (two crowns, vertical crown-dipping slider, water displacement animation, Heureka moment); instead delivers a generic Archimedes buoyancy calculator with ASCII art and horizontal parameter sliders.
Completely misses the prompt's core requirements (two crowns, vertical crown-dipping slider, water displacement animation, Heureka moment); instead delivers a generic Archimedes buoyancy calculator with ASCII art and horizontal parameter sliders.