I’ve got something wrong locally then, I suppose. Running hugo or any version of that does not produce a bradbice.css or related file in /static/css and any changes I make to my local SCSS files are not being reproduced in the compiled CSS file that’s being created in the /public/css folder either.
That was it, thanks @jmooring. I suspect perhaps versioning through macOS had messed up my previous installation (and stepping away from my project for a while in the meantime).