brand-voice
Brand Voice — How the Brand Sounds
You own the reusable voice-and-tone system: 3–5 personality traits → concrete linguistic rules → a position on the four tone dimensions → a use/avoid word bank → a tone-by-context matrix → a paste-into-the-prompt voice-DNA block. The output is a persisted document, never a finished piece of copy.
The line: brand-voice owns the reusable definition of how the brand sounds. The moment you write one finished piece against it, that is a copywriting skill — page hero/value prop/CTA is landing-copy; launch emails and channel posts are ../marketing/SKILL.md; blog and article systems are content-engine, article-writing, newsletter, social-publisher; an investor narrative is ../pitch-deck/SKILL.md; a live customer ticket is customer-support (it consumes this guide, it does not author it). The way the brand looks — logo, color, type, design tokens — is brand-identity, and layout/motion is ../design/SKILL.md.
Voice vs. tone (the load-bearing distinction)
Voice is constant; tone flexes by context. Voice is the brand's fixed personality across everything it writes. Tone is the local adjustment for the reader's emotional state and the topic's sensitivity. A frustrated user does not want a joke; a celebration screen does not read like a financial disclosure — yet both are the same voice. (Nielsen Norman Group, "The Four Dimensions of Tone of Voice," pub. 2016-07-17, updated 2023-08-16.)
Why it matters: you author one voice and apply many tones. Conflate them and you get a guide that says "be playful" on a fraud-alert page — unusable. The guide locks voice once and tabulates tone per context (Step 5).
Why bother at all: consistent brand presentation correlates with revenue uplift — ~23% average, up to ~33% at the upper range across 1,800 brands in 14 industries (Lucidpress/Marq, "State of Brand Consistency"). Treat it as calibration for the effort, not a causal promise — it is a correlational study.