✓ 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 (dragging down = crowns rise out of water instead of submerging), mass/volume/density values are static labels not live-updating displays, and the ASCII crown rendering is jittery/inconsistent, but physics ratios, water rise, displaced water live values, and Heureka animation are correctly implemented.
Slider direction is inverted (dragging down = crowns rise out of water instead of submerging), mass/volume/density values are static labels not live-updating displays, and the ASCII crown rendering is jittery/inconsistent, but physics ratios, water rise, displaced water live values, and Heureka animation are correctly implemented.