Bad menu — pages not found. Good menu — conversion foundation.
1. 5-7 items
Hick's law.
2. Clear names
'Services', not 'Our services'.
3. Logical order
F-pattern.
4. Active state
Current page highlighted.
5. Mobile hamburger
But CTA visible.
6. Sticky/fixed
Menu stays on scroll.
7. Search
For 50+ pages.