✓ 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 labeled "OBEN/Luft" maps crowns to top, which is correct, but the slider's vertical CSS rendering means dragging up increases value pushing crowns down — direction is functionally inverted for a vertical range input); splash function has a scoping bug (first `generateSplashes` call uses undefined `splashId`), and crowns have no fall/drop animation — they teleport linearly with no timed fall effect.
Slider direction is inverted (min=0 labeled "OBEN/Luft" maps crowns to top, which is correct, but the slider's vertical CSS rendering means dragging up increases value pushing crowns down — direction is functionally inverted for a vertical range input); splash function has a scoping bug (first `generateSplashes` call uses undefined `splashId`), and crowns have no fall/drop animation — they teleport linearly with no timed fall effect.