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/(marketing)/cases/[id]/client.tsx

@@ -4,7 +4,7 @@ import { useEffect, useRef, useState } from 'react';
 import Link from 'next/link';
 import { Button } from '@/components/ui/button';
 import { Badge } from '@/components/ui/badge';
-import { ArrowLeft, Building2, CheckCircle2, TrendingUp, Users, Target, Quote, Clock, MessageCircle, Award } from 'lucide-react';
+import { ArrowLeft, CheckCircle2, TrendingUp, Users, Target, Quote, Clock, MessageCircle, Award } from 'lucide-react';
 import { CASES } from '@/lib/constants';
 import type { StaticImageData } from 'next/image';
 
@@ -304,7 +304,6 @@ export function CaseDetailClient({ caseItem }: CaseDetailClientProps) {
             </section>
           )}
         </div>
-      </div>
-    </main>
+      </main>
   );
 }