✓ 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 in labeling/instructions ("up to submerge") but compensated by `100 - rawVal` inversion in code, making the effective direction correct functionally; however, the ASCII crown animation and water-rise are well-executed with plausible physics values (gold 19.32, gilded 11.35 g/cm³), though water-rise scaling is arbitrary rather than geometrically rigorous.
8,735 output tokens · claude-opus-4-6 · end_turn
Slider direction is inverted in labeling/instructions ("up to submerge") but compensated by `100 - rawVal` inversion in code, making the effective direction correct functionally; however, the ASCII crown animation and water-rise are well-executed with plausible physics values (gold 19.32, gilded 11.35 g/cm³), though water-rise scaling is arbitrary rather than geometrically rigorous.