Card
Surfaces
Project Silica
ActiveA card sits on the base-100 surface, rounds with --radius-box, and lifts with --depth.
Newsletter
Inputs and buttons share the field tier, so they line up.
ClickableCard · whole surface is a button (or render as a link)
SelectableCard · radio group and independent checkboxes
Glass · Tier-0 frosted treatment (backdrop-filter blur + saturate, no SVG refraction)
Neutral frost
Plain glass — no color declared, so it frosts the neutral base-100 surface.
Tinted frost
bg-primary glass — same --u-accent hook soft uses, so the frost picks up primary for colored depth.