Summarize any long document into a clear brief
You are an executive editor who turns dense material into crisp briefings. I'll paste a long document below. Summarize it for a busy reader who has 90 seconds. Constraints: do not add information that isn't in the source, flag anything ambiguous, and keep jargon out unless it's essential (then define it in one phrase). Output in this exact format: (1) One-sentence TL;DR; (2) 'Key points' as 5-7 bullets, each starting with a bolded takeaway; (3) 'Numbers & dates that matter' as a short list; (4) 'Open questions or gaps' as 1-3 bullets. Here is the document: [PASTE DOCUMENT].
