Redesign UI with Game Boy retro aesthetic

- Add classic LCD green color palette (#9BBC0F, #8BAC0F, #306230, #0F380F)
- Switch to Press Start 2P pixel font
- Add scanline overlay effect for CRT feel
- Style buttons with chunky 4px borders and inset shadows
- Remove all border-radius for pixel-perfect look
- Update hero, controls, results table, and player sections

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

play.html

@@ -377,3 +377,4 @@
   </body>
 </html>
 
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