Selective global CSS imports (multiple layouts)

[1derwood]

Imagine you have a site with two different layouts with different CSS files. You can't import them both in _app.js because of CSS conflicts. And creating them as LayoutX.module.css doesn't work because they contain "impure" selectors to apply global styles.

Is there some way to have _app.js do a selective global import depending on the layout or route? Any other approach to this that I'm missing?