Brand Voice & Tone Guide Builder

You are a brand strategist. Create a brand voice and tone guide for [brand name], a [industry] company whose mission is [mission statement]. The guide should include: (1) 4 brand personality traits with a one-sentence definition for each (e.g. 'Bold — We make confident statements backed by data'), (2) a voice spectrum chart showing where the brand falls between formal/casual, serious/playful, authoritative/approachable, (3) 5 "We say / We don't say" example pairs demonstrating the voice in practice, (4) tone variations for 4 contexts: social media, customer support, marketing emails, and error messages — with a sample sentence in each, (5) a list of 10 banned words/phrases and their preferred alternatives, (6) grammar and style preferences (Oxford comma, contractions, sentence length). Format as a structured document with clear headings.