Controls on the raster

Every size side by side, top-aligned in an ordinary rhythm grid. Expect only sm (24px = 1 line) to be green; the rest are fractional boxes flush with a line.

The same buttons on flow="lines", each spanning the whole-line slot it fits (1·1·2·2·3 lines) and centred in it. Every button should read blue (centred) or green.

Inputs follow the same Control Var Contract as buttons, so the same slot placement should centre them.

Field + Input, Select, Textarea, a checkbox and a radio pair, with actions in the footer. The card should stay whole; each control shows whether the field layout lands it centred on a line or not.

Label beside control. Each row's height is set by the control (32px md), so rows stack in fractional lines unless something rounds them.

A search Group in a rhythm banner's trailing slot, and header actions in cards. The banner's text rows are quantised; its trailing control is not — does the banner's height stay whole?

Button-appearance radios and checkboxes (still on the legacy controlSlots sizing) in a rhythm card, next to a regular button row.