polish: visual overhaul of GH Pages site

- Hero: animated radial glow, CTA buttons (Get Started + GitHub)

- Stat cards: top-border gradient accent, hover glow shadows

- Nav: active underline bar, mobile menu fade+slide transition

- Section dividers: gradient hr, surface sections with gradient boundaries, body noise texture

- Terminal demo: blinking cursor indicator

- Tool categories: collapsible with chevrons, show/collapse all toggle

- Roadmap: cumulative tool count badges, faded older entries

- Footer: quick nav links row, Cursor IDE tagline

- JS: staggered reveal delays for grid children, category collapse/expand

Made-with: Cursor

Author: TMHSDigital