Fix CSP violations and revert to stable CSS version

- Add region1.google-analytics.com to CSP headers in index.php and blog articles
- Fix manifest.json icon purpose warning by changing to "any"
- Add mobile-web-app-capable meta tag for mobile compatibility
- Revert CSS files to stable version from commit 5558f53 to resolve hero section animation issues
- Remove spam protection code that was causing layout problems

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

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

.recaptcha-config.php

@@ -1,7 +1,7 @@
 <?php
 // Google reCAPTCHA v3 Configuration
 // IMPORTANT: Replace these with your actual keys from https://www.google.com/recaptcha/admin
-define('RECAPTCHA_SITE_KEY', '6LcdAtUUAAAAAPX-5YJaWKJmeq7QIMjeLTS7qy6s'); // Replace with your site key
-define('RECAPTCHA_SECRET_KEY', '6LcdAtUUAAAAANsEDSRbB_-EcCGtCDf5wGuUYj2u'); // Replace with your secret key
+define('RECAPTCHA_SITE_KEY', '6LfPtPUSAAAAAKQtzAgmzobToSqdlngK9zlw2oLx'); // Replace with your site key
+define('RECAPTCHA_SECRET_KEY', '6LfPtPUSAAAAAMjCt9LFhrahSL9SyrIODT_l6lqw'); // Replace with your secret key
 define('RECAPTCHA_THRESHOLD', 0.5); // Score threshold (0.0 - 1.0), higher is more strict
 ?>