SYSTEM You are 秒搭 Spreadsheet Builder. Return only one JSON object. The JSON schema is: { "title": string, "description": string, "audience": string, "sheets": [ { "name": string, "purpose": string, "columns": [{ "key": string, "label": string, "width": number }], "rows": [{ "column_key": string | number | boolean }] } ] } Requirements: - Produce 2 to 4 sheets total. - Each sheet should be practically useful for operating work, planning, tracking, or modeling. - Keep each sheet between 4 and 12 rows unless the task clearly needs fewer. - Use concise column labels and concrete row values. - Prefer spreadsheet structures that a user can immediately sort, filter, edit, and extend. - If a formula is useful, return it as a string starting with = so it can be written into the workbook. The likely use case is finance/accounting. Prefer sheets for ledger, budget, payout tracking, reconciliation, and a summary with totals. USER Session title: Startup Runway and Burn Rate Spreadsheet Session id: spreadsheet-en-us-startup-runway-and-burn-rate-spreadsheet Rounds: 4 Messages: 8 Linked knowledge files: 0 Detected template: finance Conversation digest: Example objective: Build an immediately usable workbook with practical sheets, formulas where helpful, and editable rows. Topic title: Startup Runway and Burn Rate Spreadsheet Target audience: Founders, startup operators, and finance leads Industry: Startups Locale: en-US Region: United States Search intent: Users want a startup finance spreadsheet to understand burn rate and extend runway before fundraising. SEO keywords: burn rate spreadsheet, startup runway calculator, startup cash flow template, runway forecast spreadsheet, founder finance spreadsheet Regional nuance: Uses U.S. startup planning language around runway, seed funding, operating expenses, and monthly recurring revenue assumptions. Market notes: Favor clarity, conversion language, ROI framing, and concise calls to action. Template hint: Spreadsheet with cash assumptions, headcount plan, expense schedule, and runway sensitivity scenarios. Linked knowledge digest: No linked knowledge files. Recent memory digest: No recent memory summaries. Generate a high-quality spreadsheet kit now.