Lab · tune
Tune the material.
Each section shows variants side by side. Pick the one you like; it is saved in this browser only. At the bottom is a short summary to copy and paste back.
Vibration. iPhone browsers cannot vibrate: Safari has no Vibration API. Vibration is only felt on Android, in the browser. The BetterGains app uses native haptics, so test it there. On an iPhone you can still see each pattern drawn as bars.
Sound. Off until you turn it on. In the apps it also stays off when reduced motion is on, so it is disabled here too.
Mercury
What waiting looks like. Replay runs a save: mercury flows out, then it sets.
Obsidian
What is settled. The difference is drawn by WebGL; on the CSS tier it is only approximated.
Ember on save
The glow at the instant something sets. Replay runs a save on all three.
Vibration
One group per event. Press Feel it to play a pattern, then pick the one you want.
Sound
Quiet, synthesised material sounds. Turn sound on to hear them.
Your summary
Copy this and paste it back to Claude.