✓ 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
Live mass, volume, and density values are static text in the SVG (never updated by JS), so only displaced water qualifies as a true live value; slider is a custom SVG drag target rather than a native range input, which works but is fiddly on some devices.
10,042 output tokens · claude-opus-4-6 · end_turn
Live mass, volume, and density values are static text in the SVG (never updated by JS), so only displaced water qualifies as a true live value; slider is a custom SVG drag target rather than a native range input, which works but is fiddly on some devices.