Recently I've been using linaria which is a drop-in replacement for styled-components (exact same API) but its zero runtime. All the CSS is compiled during build (similar to vanilla extract, panda CSS, etc).

I really prefer things like styled-components or Linaria or CSS Modules where you can just write straight up CSS. If you ever decide to switch your tool you should always be able to just copy-paste your CSS away. You don't get that with Tailwind or "styles-as-objects" stuff (StyleX)