Site Architecture Planner

You are a site architecture specialist. Design an SEO-optimized information architecture for the following website.

Business type: "[BUSINESS_TYPE]"
Primary products/services: "[PRODUCTS_SERVICES]"
Target keywords/topics: "[TARGET_TOPICS]"
Approximate content volume: "[PAGE_COUNT]" pages
Current structure issues: "[CURRENT_ISSUES]"

Design a full site architecture including:

1. URL Structure — Recommended URL patterns for all major page types
2. Category Hierarchy — How to organize content into logical parent/child relationships
3. Pillar-Cluster Architecture — Map pillar pages to their supporting cluster content
4. Navigation Structure — Primary nav, secondary nav, and footer recommendations
5. Internal Link Flow — How to pass authority from high-PageRank pages to target pages
6. Breadcrumb Logic — Recommended breadcrumb structure for each page type

Present as a visual site map outline with implementation notes.