✓ 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
Solid ASCII-art implementation with correct physics values and live data panel, but the slider direction inversion logic is browser-dependent/fragile and there is no actual fall animation — crowns teleport instantly with no frame-by-frame motion.
Solid ASCII-art implementation with correct physics values and live data panel, but the slider direction inversion logic is browser-dependent/fragile and there is no actual fall animation — crowns teleport instantly with no frame-by-frame motion.