標準体系 / brand

Narrative and messaging

Principle

Narrative is an evidence-backed decision system, not inspirational prose. Mission explains why; difference explains the credible choice; proof supports it; audience messages adapt relevance without changing truth.

Narrative manifest

Record mission, audience need, tension, point of view, differentiated method, proof pillars, personality boundaries, promise, prohibited claims, and message hierarchy. Every factual claim links to evidence with owner, scope, geography, method, observed date, expiry, and approved qualifiers.

For each audience and channel provide a message objective plus short, medium, and long approved forms. Shortening must preserve the claim's qualification. Distinguish durable narrative from perishable metrics, product names, pricing, availability, and rankings.

Review questions

  1. Is the audience need real and specific?
  2. Does the difference describe an actual capability rather than an adjective?
  3. Can every proof claim be independently checked and is it still current?
  4. Does the hierarchy survive in one sentence without exaggeration?
  5. Would localization preserve the intended belief and action?

QA evidence

Automated freshness checks; legal/privacy review where required; claim-to-source traceability; contradiction scan across channels; comprehension tests; locale transcreation review; rollback when evidence expires.

Agent rule

Agents assemble approved claims and may vary structure and tone. They may not invent proof, remove qualifiers, turn aspiration into fact, or revive expired product facts from a historical brand guide.

原文ファイル: design-system/brand/duolingo-derived/narrative-and-messaging.md