Underline options

Hello… I’m new to Scrivener.

I’d like thick underlines in my document. I see Scrivener provides a few underline options, but I’d like something thicker than “Single Solid” (and I don’t want double underlines).

I’m thinking I can compile to a Word document, which has more underline options (or even HTML, where I can use custom CSS).

But first, let me ask if that’s a good approach, or am I overlooking something?