✓ 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 data cards show only the displaced volume and buoyancy (live), but mass, volume, and density are static labels—not updated live values—so three of the four required live-value features are absent.
Live data cards show only the displaced volume and buoyancy (live), but mass, volume, and density are static labels—not updated live values—so three of the four required live-value features are absent.