Readability, Navbar & Mascot Fix
This pass improves section-heading readability on dark backgrounds, makes the navbar easier to read, and fixes the mascot logo crop so it no longer feels cut off.
What changed
- Section headers now have brighter text and a subtle contrast panel.
- Navbar background, nav links, search, and brand text are easier to read.
- Hub mascot mark was rebuilt with more headroom and padding so it is not cut off.
- Header/footer logo references and favicon references updated to V399 assets.