A spotlight cursor: wraps any content, dims the surface, and cuts a soft radial light that spring-follows the pointer to reveal what's beneath — ringed by a faint warm falloff and flaring brighter on press (rapid presses stack). Children stay interactive; idles on its own when untouched, and settles to a static centered spotlight under reduced motion.
pnpm dlx shadcn@latest add "https://crucibleui.com/r/lantern.json"