The Tailwind CDN typography plugin configuration wasn't applying correctly
in the browser. Reverted to using custom CSS with !important flags to ensure
dark code block backgrounds are properly applied.
- Code blocks: #14151f (slightly darker than main background)
- Inline code: #1a1b26 (matches main background)
- Text: #c0caf5 (light text for readability)
This is a pragmatic fix that ensures the documentation remains readable while
we investigate the Tailwind CDN typography plugin issue.