Create a premium, self-contained HTML board briefing for [COMPANY] covering [PERIOD].

The audience is [BOARD / INVESTORS / LEADERSHIP] and the single decision required is [DECISION]. Build a clear narrative:

1. The executive signal in one sentence.
2. Four reviewed operating metrics with period comparisons.
3. One interactive scenario model with three explicitly stated planning cases.
4. The three material risks with owners and stop conditions.
5. The exact decisions requested with dates.

Use only supplied, verified data. Label estimates and assumptions. Never invent customer proof. Make the artifact responsive, keyboard accessible, printable, and fully functional without external network requests. Use semantic HTML, local CSS, and local JavaScript. Include reduced-motion behavior and a visible fictional or sanitized-data disclosure when appropriate.

Output a ready-to-publish folder with index.html and local assets.
