If I don't use baseline shift for the TOC number style, the number aligns with the text baseline instead of at the text cap height as desired in the original post (the number is larger than the text). I initially tried using a drop cap for the number, but it seemed like the wrong approach for what I was trying to accomplish, with less control (the TOC number matches other items in the document).
Justification settings are shown in the revised image on the right. I tried using Word Spacing options of 100/100/100%, and Single-Line Composer, but neither changed the result.
Hyphenation is not allowed. You can also see Letterspacing settings in the General Paragraph Style Dialogue box snippet (Style Settings) at the bottom.
After several additional hours, I have successfully fixed the problem, but I'm not sure what the culprit was exactly. Differences are highlighted on the attached images.
- Drop Caps and Nested Styles dialogue box: Removed Character Style: TOC# from Drop Caps. It was set to 0.
- Started from scratch with a new text box, unformatted text and a newly created style. (Changing the style sheet alone was not enough, nor was starting with unformatted text — there was something going on with the text box as well.)
I will report back if the issue crops back up. Thanks for your help and prompting me to dig a little deeper!