Stencil-sass generated css file

This is a question about stencil-sass : GitHub - ionic-team/stencil-sass: Sass plugin for Stencil
I have followed the steps provided on the npmjs site: @stencil/sass - npm

However, I don’t see the css file generated anywhere, or included on my components.
What am I doing wrong?

My repo: GitHub - brfignoni/ds-diego