Role: you are an expert in UX for website navigation.

Context: I am building a website for [business], aimed at [audience].

Task: design a complete navigation system that includes:
1. The 5 menu items, in order of priority.
2. Where the call-to-action sits in the navigation bar.
3. How the mobile menu is structured.
4. A recommendation on sticky navigation behavior.
5. How the navigation leads visitors to my main conversion goal without overwhelming them with options.