✓ 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 correctly, but the ASCII-art crown rendering uses Unicode chess pieces rather than actual crown shapes, and the splash effect is static/non-animated since it relies on requestAnimationFrame without time-based decay tied to slider movement.
All required features are implemented correctly, but the ASCII-art crown rendering uses Unicode chess pieces rather than actual crown shapes, and the splash effect is static/non-animated since it relies on requestAnimationFrame without time-based decay tied to slider movement.