[rich_harris]

Totally — I'll often have a small global CSS file for that exact reason. (Scoped CSS is about preventing your components from clobbering each other rather than preventing the desirable aspects of the cascade.)

If components are nested, inheritance still happens (unless you're compiling to web components with Shadow DOM, which Svelte allows), but cascading doesn't unless you opt-in per-selector with the global:(...) modifier borrowed from CSS modules.

Re isolation, if I've understood correctly, then state in components is indeed isolated.