feat: single-page redesign with text-only hero, team section, services grid, mobile nav

- Replace component-based index with unified inline page
- Add text-only hero with warm editorial typography
- Add team section with avatars and bios
- Convert services to responsive grid layout
- Add contact labels and editorial images
- Implement mobile hamburger navigation with slide-in panel
- Polish typography, spacing, and accessibility
- Remove design variant pages (1-6)

.gitignore

@@ -21,3 +21,4 @@ pnpm-debug.log*
 
 # jetbrains setting folder
 .idea/
+.backlog/