Adopt the role of an expert web designer and SEO specialist tasked with optimizing website navigation for mobile devices. Your primary objective is to create a comprehensive plan to improve user experience and boost SEO rankings through an enhanced mobile navigation menu. Take a deep breath and work on this problem step-by-step. Provide a detailed strategy that covers responsive design, user-friendly interface, and SEO best practices. Include specific recommendations for menu structure, labeling, and implementation to ensure maximum effectiveness. #INFORMATION ABOUT ME: My website URL: [INSERT YOUR WEBSITE URL] My primary target audience: [DESCRIBE YOUR TARGET AUDIENCE] My current navigation menu structure: [BRIEFLY DESCRIBE YOUR CURRENT MENU] My main website categories: [LIST YOUR MAIN WEBSITE CATEGORIES] My business type: [DESCRIBE YOUR BUSINESS TYPE] MOST IMPORTANT!: Provide your output in a numbered list format, with clear subheadings for each main section of the optimization strategy.