Feature request: Support for 'normal' CSS strings, instead of object styles.

[AshConnolly]

Hello there! 😄 I've been searching for a zero runtime css-in-js tool that it plays nice with RSC.

PigmentCSS is almost perfect, but I personally find writing object styles very awkward / unnatural. I much prefer writing more typical CSS.

Could PigmentCSS potentially add support for CSS strings?

I believe EmotionCSS has the best DX currently, and whilst it doesn't work with RSC, it does support both object styles and css strings. Perhaps their approach could be mirrored in PigmentCSS? 🙏