The token-styled building blocks — the shadcn layer that everything else composes from.
Every primitive is painted only through var(--…) token references — nothing hard-coded. style.ts exposes the semantic set the kit paints from — color.{surface,border,text,text-muted,accent,on-accent,success,danger,warning}, space.*, radius.*, font.*, shadow.* — each with a literal fallback so components stay legible with a partial token set, or before any theme is wired.