✓ 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
Exceptionally complete SVG-based implementation covering every required feature — physics, live values, splash/ripple/wave effects, sparkle-laden Heureka overlay — with the only notable weakness being a custom SVG drag-handle slider instead of a native range input, which is functional but slightly less robust on touch devices.
12,145 output tokens · claude-opus-4-6 · end_turn
Exceptionally complete SVG-based implementation covering every required feature — physics, live values, splash/ripple/wave effects, sparkle-laden Heureka overlay — with the only notable weakness being a custom SVG drag-handle slider instead of a native range input, which is functional but slightly less robust on touch devices.