diff --git a/containers/novela/static/editor.css b/containers/novela/static/editor.css
index 1bd0543..b33fc67 100644
--- a/containers/novela/static/editor.css
+++ b/containers/novela/static/editor.css
@@ -275,7 +275,7 @@ html, body { height: 100%; background: var(--bg); color: var(--text); font-famil
 /* ── Visual editing pane ── */
 .visual-pane { flex: 1; overflow-y: auto; background: var(--bg); }
 .visual-pane .ProseMirror {
-  max-width: 70rem; width: 100%; margin: 0 auto; padding: 2.5rem 3rem 6rem;
+  width: 100%; margin: 0; padding: 2.5rem 3rem 6rem;
   outline: none; color: var(--text);
   font-family: var(--serif, Georgia, serif); font-size: 1.05rem; line-height: 1.7;
 }
diff --git a/containers/novela/version.py b/containers/novela/version.py
index ff2a190..ce888a5 100644
--- a/containers/novela/version.py
+++ b/containers/novela/version.py
@@ -10,7 +10,7 @@ from __future__ import annotations
 
 from changelog import CHANGELOG
 
-BUILD = 3
+BUILD = 4
 
 
 def _release_version() -> str:
diff --git a/docs/changelog-develop.md b/docs/changelog-develop.md
index e7082ac..28bd285 100644
--- a/docs/changelog-develop.md
+++ b/docs/changelog-develop.md
@@ -3,7 +3,7 @@
 ## 2026-06-12 — Visual editor: wider editing column
 
 ### Changed
-- Widened the Visual (WYSIWYG) editing column from the reader's 42rem reading width to 70rem with more horizontal padding — the reading width was comfortable to read but too narrow to edit in. `static/editor.css` (`.visual-pane .ProseMirror`). CSS only; no bundle rebuild.
+- Widened the Visual (WYSIWYG) editing column to fill the full editor pane width (dropped the 42rem reader reading-width cap; now `width: 100%` with horizontal padding) — the reading width was comfortable to read but too narrow to edit in. `static/editor.css` (`.visual-pane .ProseMirror`). CSS only; no bundle rebuild.
 
 ## 2026-06-12 — Visual editor: broaden schema & fidelity check against real library content