Write CSS using familiar Stylus syntax with variables, mixins, and all CSS features — no JavaScript object notation

Same styles work on iOS, Android, and Web via react-native-web. Write once, run everywhere

Style internal elements of child components using :part() selectors, similar to CSS Shadow Parts

Use var(--name) with runtime updates. Change themes instantly and components re-render automatically

Built-in 'u' unit (1u = 8px) for consistent spacing following Material Design guidelines

Optional style caching with teamplay prevents unnecessary re-renders for optimal performance