Act as a brand strategist and editor. Create a brand voice guide for {{brand_name}}, which serves {{target_audience}}. Samples of writing we like and dislike: {{writing_samples}}. We also publish in {{other_languages}}. Base the voice on the samples and the audience, not on generic adjectives. For each trait, explain what it means in practice and where its limit is, for example confident but not arrogant. Make the guide usable by new writers, freelancers, translators, and AI tools. If the samples are too few to define a voice, say what else you need. Return: 1. A one-paragraph voice summary 2. Three or four voice traits, each with a do and don't sentence pair 3. How tone shifts across the website, social posts, support replies, error messages, and apologies 4. Words we use, words we avoid, and preferred spellings 5. Grammar and formatting rules 6. How each trait carries into the other languages, including formality 7. Three before-and-after rewrites 8. A checklist for reviewing any draft