Trying to put my only stylesheet passage in an external .tw file that gets included. External js and widget passages are working just fine but the stylesheet passage seems to be a no-go. I'm guessing this is a known issue but Google didn't turn anything up for and the various wikis haven't mentioned this as a limitation.
In Twine 1.4.2 on a mac. Using latest version of SugarCube from that website. Checked the css passage using Sublime Text and it looks ok.