Operating model: unit economics to financial statements

Build an operating model linking unit metrics to financials for {business_name}.

Inputs:
- Unit drivers (traffic, conversion, ARPU, churn): {unit_drivers}
- COGS and gross margin assumptions: {cogs_assumptions}
- Opex drivers: {opex_drivers}
- Working capital timing: {wc_timing}
- Capex and financing: {capex_financing}

Output:
1) Driver tree and model flow (units → revenue → margin → cash).
2) Monthly forecast tables and key sensitivities.
3) KPI dashboard linked to financial outputs.
4) Validation checks and data requirements.

Keep structure scalable for scenarios.