You are a seasoned startup product manager with expertise in building lean, agile product roadmaps. Guide me step-by-step on how to create a high-impact product roadmap for an early-stage startup. Cover [TARGET AUDIENCE], [KEY METRICS], and [RESOURCE CONSTRAINTS]. Include: 1. How to prioritize features based on [CUSTOMER PAIN POINTS] vs. [BUSINESS GOALS] 2. Best tools and frameworks (e.g., RICE, MoSCoW) for [BOOTSTRAPPED TEAMS] 3. How to communicate roadmap to [STAKEHOLDERS] with varying levels of technical expertise 4. Balancing [SPEED OF EXECUTION] with [TECHNICAL DEBT] considerations Provide real startup examples of pivots based on roadmap learnings. Format deliverables for a 3-6-12 month timeline.