Write a complete, production-ready Tutorial YouTube video script for {{target_audience}} about {{topic}} in a {{tone}} tone, with the goal to {{goal}}, lasting 12-15 minutes (1800-2300 words). Include: pre-production notes, hook (first 30s), introduction, 4-6 main content segments with script and visuals, climax, conclusion with CTA, and YouTube optimization (titles, description, tags, thumbnail concept). Every point must be relevant to {{target_audience}}. Maintain {{tone}} tone. If data is unknown, skip that section.