GitHub Pages with Jekyll remote theme; skin not working

Question

I'm having trouble configuring my GitHub Pages deployment to use jekyll/minima with the dark skin. The problem is that the dark skin isn't applied.

Here's the structure of the repo.

• _config.yml

  title: <repo-name>
  
  url: "https://silvncr.github.io"
  baseurl: "/<repo-name>"
  
  plugins:
    - jekyll-remote-theme
  
  remote_theme: jekyll/minima
  
  minima:
    date_format: "%Y-%m-%d"
    skin: dark
  

• docs/assets/css/style.scss

  ---
  ---
  
  @import "{{ site.theme }}";
  
  // other stuff
  

I've also overridden some HTML files in the _layouts and _includes directories. Both these edits and the custom CSS seem to be working, as well as the minima theme itself; it's just the dark skin that doesn't work.