❌ Usage: php blog_generator.php "keyword" "Title" search_volume [difficulty]
Example: php blog_generator.php "vrchat alternative" "Best VRChat Alternative 2025" 5400 medium

Arguments:
  keyword        - Target SEO keyword (e.g., 'vrchat alternative')
  Title          - Blog post title (e.g., 'Best VRChat Alternative 2025')
  search_volume  - Monthly search volume (e.g., 5400)
  difficulty     - SEO difficulty: low, medium, high (optional, default: medium)