- Single SYSTEM_VERSION variable (currently 2.1)
- Footer shows 'SYSTEM V2.1' dynamically
- Same version used for CSS/JS cache busting
- Just update SYSTEM_VERSION to change both
- Extracted CSS to css/style.css (978 lines)
- Extracted JS to js/main.js (708 lines)
- index.html now only 608 lines (was 2289)
- Added mobile hamburger menu for navigation
- Mobile menu toggles with animated icon
- Menu closes when clicking links or outside
itsaygea