diff --git a/docs/vision.md b/docs/vision.md
index b4a8526..3937aa5 100644
--- a/docs/vision.md
+++ b/docs/vision.md
@@ -68,4 +68,4 @@ The vision is realized when:
 ## What this vision is, and what it isn't
 
 * **It is:** A principles document. The North Star, the tenets, the strategic bets, the anti-goals. It's intended to be the page that orients a new team, a new stakeholder, or a new architectural decision. It should not need to be rewritten when a tool changes.
-* **It isn't:** An architecture. The four-layer model (L1 Terraform primitives, L2 composed stacks, L3A developer surface, L3B agentic surface), the central pipeline template model, the schema location, the dual HITL mechanics, the enterprise evidence stream integration — all of that belongs in the architecture document, where it can be specific and evolve independently.
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+* **It isn't:** An architecture. The four-layer model (primitives, modules, developer surface, agentic surface), the central pipeline template model, the schema location, the dual HITL mechanics, the enterprise evidence stream integration — all of that belongs in the architecture document, where it can be specific and evolve independently.
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