Update website branding image for enhanced visual appeal

Update the main branding image for the website to improve visual presentation.

Replit-Commit-Author: Agent
Replit-Commit-Session-Id: b5350384-ad76-4695-af1a-ac1f76cf9250
Replit-Commit-Checkpoint-Type: full_checkpoint
Replit-Commit-Event-Id: 92ffaeb1-1b7a-42bf-99bc-844ef25b4228
Replit-Commit-Screenshot-Url: https://storage.googleapis.com/screenshot-production-us-central1/52b66bf4-f046-4133-a22e-4699529a0818/b5350384-ad76-4695-af1a-ac1f76cf9250/WhuMNFb
Replit-Helium-Checkpoint-Created: true
