How to split styles in shopware 6?

I wonder how you would do code-splitting (e.g. by page-type) especially for CSS in Shopware 6 storefront. Right now everything gets bundled into one big all.css. But I think it's not that smart that a user has to load styles for example for the checkout on his first visit on let's say the home page.
I imagine something like different entrypoints, for example product.scss, checkout.scss etc.
Is there a inbuilt way to do this?