✓ 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
Remarkably complete ASCII-art implementation with correct Archimedes physics, live readouts, splash particles, and a Heureka overlay, but the vertical slider direction is inverted (value=0 at top maps to crowns in air only by convention of the rtl/vertical-lr CSS trick, which renders ambiguously across browsers) and the ASCII crown rendering is fragile/misaligned due to Unicode symbol width collisions.
Remarkably complete ASCII-art implementation with correct Archimedes physics, live readouts, splash particles, and a Heureka overlay, but the vertical slider direction is inverted (value=0 at top maps to crowns in air only by convention of the rtl/vertical-lr CSS trick, which renders ambiguously across browsers) and the ASCII crown rendering is fragile/misaligned due to Unicode symbol width collisions.