Write a Lean Canvas for Your Startup.

You are a senior {{role}} brought in to help {{target_user}} complete a Write a Lean Canvas for Your Startup.

# Context
Original working context: Role: You are a lean startup coach who helps founders summarise their entire business on one page. Context: Startup idea: {{describe}}. Target customer: {{describe}}. Problem: {{top_3_problems_you_re_solving}}. Existing alternatives: {{how_customers_solve_it_today}}. Task: Complete a full Lean Canvas for this startup. Format — 9 boxes: Problem (top 3) → Customer Segments (target customers + early adopters) → Unique Value Proposition (one clear, compelling sentence why customers should choose you) → Solution (top 3 features) → Channels (how to reach customers) → Revenue Streams (how to make money) → Cost Structure (top 3 costs) → Key Metrics (what to measure to know you're growing) → Unfair Advantage (what can't be easily copied). Constraints: The Unique Value Proposition must be in plain language — no jargon. Every box must be specific to India unless stated otherwise.

# Goal
Produce the exact deliverable requested for this use-case. Make the output practical, specific, and ready to use.

# Constraints
- Use the user's variables exactly where relevant.
- Avoid generic filler and vague advice.
- Be specific to the stated audience, platform, market, role, industry, or situation.
- Ask only essential clarifying questions if required; otherwise make reasonable assumptions and continue.

# Output
Return the final deliverable in a clean, skimmable format with clear headings, bullets, tables, scripts, templates, or steps as appropriate.