This is awesome! I've been hearing a lot of buzz recently about CSS variables but I haven't seen such a clean integration. I love the idea of exposing them in the style prop!
The "single-source of style" idea also feels powerful. Essentially the component has a list of approved use cases (e.g. InlineLink knows that it will be used as a child of Aside) and centralizes those. This probably has implications for code splitting, so the styled composition API is a nice escape hatch for long tail use cases.
The "single-source of style" idea also feels powerful. Essentially the component has a list of approved use cases (e.g. InlineLink knows that it will be used as a child of Aside) and centralizes those. This probably has implications for code splitting, so the styled composition API is a nice escape hatch for long tail use cases.