A segmented control: 2–5 options with a single shared-layout pill that springs behind the active choice while its label ignites to full contrast and a faint accent bloom pulses on settle. Real radio semantics — role=radiogroup/radio, roving tabindex, Arrow/Home/End keyboard, focus-visible. Controlled or uncontrolled. The pill snaps under reduced motion.
pnpm dlx shadcn@latest add "https://crucibleui.com/r/quorum.json"