✓ 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 is horizontal (not vertical as required) and direction is inverted (0=air, 100=water maps left-to-right); ASCII-art canvas renders both crowns with correct physics values, but crown Y-position logic is inverted (goldY decreases as depth increases, crowns move UP instead of DOWN).
Slider is horizontal (not vertical as required) and direction is inverted (0=air, 100=water maps left-to-right); ASCII-art canvas renders both crowns with correct physics values, but crown Y-position logic is inverted (goldY decreases as depth increases, crowns move UP instead of DOWN).