Brand Voice Guide Prompt

Extract a voice guide from the brand copy below.
Brand: {{brand}}
Sample copy:
{{samples}}

Output:
1. Three voice keywords with one-line explanations.
2. We write this / we do not write this, five pairs each.
3. Rules for sentence length, punctuation, person and jargon.
4. Three examples: homepage, support reply, social post.
5. Five anti-examples with rewrites.

Make the rules executable; avoid vague words like authentic or warm.