✓ 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
Slider direction is inverted (min=0/air at bottom, max=100/water at top in vertical writing-mode orientation), mass values are static placeholders (show "100" but no units and don't update dynamically), and splash fires continuously rather than only on water entry; physics values (gold 19.3, bronze 8.75, same mass) are otherwise correct.
Slider direction is inverted (min=0/air at bottom, max=100/water at top in vertical writing-mode orientation), mass values are static placeholders (show "100" but no units and don't update dynamically), and splash fires continuously rather than only on water entry; physics values (gold 19.3, bronze 8.75, same mass) are otherwise correct.