Generate a complete Custom GPT system prompt for an AI assistant specialized in product development in the {{industry}} industry, targeting {{target_audience}} to help them achieve {{goal}}, written in a {{tone}} tone. The prompt must include: Identity and Role, Core Capabilities (5-7 tasks), Conversation Flow (with diagnostic questions), Output Formatting Rules (Markdown, length guidelines), Behavioral Guardrails (disclaimers, redirections), Knowledge and Context (industry concepts, regulations), and Interaction Patterns (templates, follow-ups). Keep under 1800 words. Every section must be specific to {{industry}} and {{target_audience}}. Include failure behavior and placeholders for background information and user request. Paste any relevant background information after these instructions before running.