Each icon below starts at the exact size it uses in the real app today (Compact/Medium/Roomy = 24px/30px/36px circles). Move a slider, watch the circle on the right update live. "Size" changes how big the icon is; "Offset" nudges it up(–)/down(+) for optical centering, independent of size. When it looks right, hit Copy — the values paste as plain text you can drop back into this chat.