Tokens, not layouts.
- These previews show the same tokens and type roles resolving per platform. They are not a layout spec.
- Navigation, tab bars, sheets and menus use the platform's own component —
TabViewon iOS,NavigationBaron Android. - Native components carry Dynamic Type, Reduce Transparency, Increase Contrast and correctly-contrasting selection indicators for free.
- Pair every selected state with a filled-versus-outlined icon. Never colour alone.