diff --git a/docs/ARCHITECTURE.md b/docs/ARCHITECTURE.md
index 59a00b7..31fe0fb 100644
--- a/docs/ARCHITECTURE.md
+++ b/docs/ARCHITECTURE.md
@@ -84,15 +84,15 @@ and explicitly apply the processed text before any Suno handoff.
 
 ## Suno Boundary
 
-The initial requirement is browser/site handoff to the Suno Create page
-in Custom mode. The integration attempts to fill the supported title,
+The initial requirement is an app-managed web surface for the Suno
+Create page in Custom mode. This avoids relying on a particular user
+browser. The integration attempts to fill the supported title,
 lyrics and style fields but does not press Generate. If a field cannot
 be filled, it returns a field-specific result so Presentation can report
 it and offer the approved text for copying. Treat this integration as
-replaceable because website UI/behavior can change. The macOS
-Accessibility-based field filler is an adapter behind a protocol so it
-can be replaced without changing SongProject, prompt compilation or UI
-review logic.
+replaceable because website UI/behavior can change. The field filler is
+an adapter behind a protocol so it can be replaced without changing
+SongProject, prompt compilation or UI review logic.
 
 ## Instrument Selector Boundary
 
diff --git a/docs/OPEN_QUESTIONS.md b/docs/OPEN_QUESTIONS.md
index c01fbd5..9bfb38c 100644
--- a/docs/OPEN_QUESTIONS.md
+++ b/docs/OPEN_QUESTIONS.md
@@ -15,8 +15,9 @@ finalized.
 -   Exact list of supported languages/dialects for MVP.
 -   Arabic diacritization policy: full tashkeel vs
     pronunciation-targeted tashkeel.
--   Resolved: Suno handoff opens the browser-based Create page in Custom
-    mode and attempts to fill title, lyrics and style fields. It never
+-   Resolved: Suno handoff presents the Create page in an app-managed web
+    surface in Custom mode and attempts to fill title, lyrics and style
+    fields. It never
     starts generation. Field-fill failures are reported with the
     approved text available for copying.
 -   Whether Suno integration is permitted/reliable under the intended
diff --git a/docs/PRODUCT.md b/docs/PRODUCT.md
index e8485e7..05d7e14 100644
--- a/docs/PRODUCT.md
+++ b/docs/PRODUCT.md
@@ -19,7 +19,8 @@ instructions for Suno.
 4.  User reviews and manually edits every generated component.
 5.  Project versions are saved.
 6.  User presses **Send to Suno**.
-7.  The app opens the Suno Create page in Custom mode and fills the
+7.  The app presents the Suno Create page in an app-managed web surface
+    in Custom mode and fills the
     supported title, lyrics and style fields. It does not trigger
     Generate. If a field cannot be filled, the app reports that result
     and keeps its approved text ready for the user to copy.