diff --git a/eslint.config.mjs b/eslint.config.mjs
index 5d5b7cdd..3a95d59d 100644
--- a/eslint.config.mjs
+++ b/eslint.config.mjs
@@ -176,6 +176,40 @@ const pluginReviewRules = {
 				};
 			},
 		},
+		"no-codemirror-theme-styles": {
+			meta: {
+				type: "problem",
+				docs: {
+					description:
+						"Disallow static CodeMirror theme styles in TypeScript; use stylesheet selectors instead.",
+				},
+				messages: {
+					noCodeMirrorThemeStyles:
+						"Move CodeMirror styling out of TypeScript and into the plugin stylesheet.",
+				},
+				schema: [],
+			},
+			create(context) {
+				return {
+					CallExpression(node) {
+						const { callee } = node;
+						if (
+							callee.type === "MemberExpression" &&
+							!callee.computed &&
+							callee.object.type === "Identifier" &&
+							callee.object.name === "EditorView" &&
+							callee.property.type === "Identifier" &&
+							callee.property.name === "theme"
+						) {
+							context.report({
+								node: callee,
+								messageId: "noCodeMirrorThemeStyles",
+							});
+						}
+					},
+				};
+			},
+		},
 	},
 };
 
@@ -277,6 +311,7 @@ export default [
 			"@microsoft/sdl/no-inner-html": "warn",
 			"plugin-review/require-eslint-directive-description": "warn",
 			"plugin-review/no-network-interval": "warn",
+			"plugin-review/no-codemirror-theme-styles": "warn",
 			"obsidianmd/no-static-styles-assignment": "warn",
 			"obsidianmd/rule-custom-message": "warn",
 			"obsidianmd/ui/sentence-case": "warn",
diff --git a/src/editor/EmbeddableMarkdownEditor.ts b/src/editor/EmbeddableMarkdownEditor.ts
index 2a0185a4..fc4d9acf 100644
--- a/src/editor/EmbeddableMarkdownEditor.ts
+++ b/src/editor/EmbeddableMarkdownEditor.ts
@@ -340,14 +340,6 @@ export class EmbeddableMarkdownEditor extends getEditorBase() {
 	buildLocalExtensions(): Extension[] {
 		const extensions = super.buildLocalExtensions();
 
-		// Explicitly hide line numbers with CSS
-		extensions.push(
-			EditorView.theme({
-				".cm-lineNumbers": { display: "none !important" },
-				".cm-gutters": { display: "none !important" },
-			})
-		);
-
 		extensions.push(
 			tooltips({
 				parent: activeDocument.body,
diff --git a/styles/task-modal.css b/styles/task-modal.css
index 35780626..0762c411 100644
--- a/styles/task-modal.css
+++ b/styles/task-modal.css
@@ -61,6 +61,11 @@
     border-left-color: var(--text-normal);
 }
 
+.details-markdown-editor .cm-lineNumbers,
+.details-markdown-editor .cm-gutters {
+    display: none;
+}
+
 /* Placeholder styling */
 .details-markdown-editor .cm-placeholder {
     color: var(--text-faint);
@@ -130,6 +135,11 @@
     border-left-color: var(--text-normal);
 }
 
+.nl-markdown-editor .cm-lineNumbers,
+.nl-markdown-editor .cm-gutters {
+    display: none;
+}
+
 
 .nl-markdown-editor .cm-placeholder {
     color: var(--text-muted);