Curious about your expectations: Do you rely on utility classes only in your workflow, or do you split reusable patterns into "original CSS"-like @apply blocks?

And how would you categorise the complexity of the Apps/UIs you build like this?

I'm very interested in the specifics of successful applications of Tailwind that the maintainers keep deeming a good solution, since CSS as a whole is one of my main scopes and I've had quite some projects that where basically some variation of writing custom brand-lib frameworks for teams who embraced Tailwind at first, but in time ended up hard locked when needing to refactor or iterate their UI