✓ 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
All required features are implemented with correct physics (gold 19.3 g/cm³, gilded 13.0 g/cm³, same 1000g mass), but the ASCII/pre-element rendering approach limits animation smoothness and the water-level rise uses coarse integer character-row increments rather than a continuous visual change.
All required features are implemented with correct physics (gold 19.3 g/cm³, gilded 13.0 g/cm³, same 1000g mass), but the ASCII/pre-element rendering approach limits animation smoothness and the water-level rise uses coarse integer character-row increments rather than a continuous visual change.