refactor: complete website optimization - unified navigation, colors, and structure

- Created service detail pages with storytelling style
- Created service list page
- Removed service modal interactions
- Simplified homepage About section
- Added homepage Cases section
- Updated navigation to use page links instead of anchors
- Created products list page
- Updated footer links
- Unified color scheme to brand red (#C41E3A)
- Fixed TypeScript errors (removed unused imports)
- Fixed JSX syntax errors
- Split About page into server and client components
- All tests passing: typecheck and build successful

src/app/news/[slug]/NewsDetailClient.tsx

@@ -2,7 +2,6 @@
 
 import { Button } from '@/components/ui/button';
 import { Badge } from '@/components/ui/badge';
-import { PageHeader } from '@/components/ui/page-header';
 import { ArrowLeft, Calendar, Share2 } from 'lucide-react';
 import Link from 'next/link';
 import { motion } from 'framer-motion';