diff --git a/.reasonix/desktop-topic-auto-title-meta.json b/.reasonix/desktop-topic-auto-title-meta.json
index 59ffc5f..e9896b9 100644
--- a/.reasonix/desktop-topic-auto-title-meta.json
+++ b/.reasonix/desktop-topic-auto-title-meta.json
@@ -10,5 +10,11 @@
     "userTurns": 1,
     "basisHash": "8f279ebcb96d036b",
     "updatedAt": 1783352872251
+  },
+  "topic_20260708-095428_990617acd4168b40": {
+    "stage": 1,
+    "userTurns": 1,
+    "basisHash": "a29f890c9742dd7d",
+    "updatedAt": 1783651532738
   }
 }
\ No newline at end of file
diff --git a/.reasonix/desktop-topic-title-sources.json b/.reasonix/desktop-topic-title-sources.json
index f2c1894..b3d25e0 100644
--- a/.reasonix/desktop-topic-title-sources.json
+++ b/.reasonix/desktop-topic-title-sources.json
@@ -35,6 +35,8 @@
   "topic_20260707-091519_dc062b2bfdf4249c": "auto",
   "topic_20260707-092315_b8c3939bfc696802": "auto",
   "topic_20260707-092711_af706c3fcc7e435e": "auto",
+  "topic_20260707-093602_5c75f77654cab0c3": "manual",
+  "topic_20260707-094645_05255aaa45d5f673": "manual",
   "topic_20260707-095503_bf879b65e4666516": "auto",
   "topic_20260708-020616_9ab54d98daf65053": "auto",
   "topic_20260708-093419_71d1fea2e4b5a40f": "auto",
diff --git a/.reasonix/desktop-topic-titles.json b/.reasonix/desktop-topic-titles.json
index 26e350f..970780a 100644
--- a/.reasonix/desktop-topic-titles.json
+++ b/.reasonix/desktop-topic-titles.json
@@ -35,8 +35,10 @@
   "topic_20260707-091519_dc062b2bfdf4249c": "关于App.vue里的toolabr…",
   "topic_20260707-092315_b8c3939bfc696802": "当我点击目录树切换显示文件的时候，右…",
   "topic_20260707-092711_af706c3fcc7e435e": "帮我检查一下app.vue里的too…",
+  "topic_20260707-093602_5c75f77654cab0c3": "隐藏单栏和双栏的切换功能，把mark…",
+  "topic_20260707-094645_05255aaa45d5f673": "帮我移除markdownEditor…",
   "topic_20260707-095503_bf879b65e4666516": "帮我移除markdownEditor…",
   "topic_20260708-020616_9ab54d98daf65053": "帮我分析一下现在的markdownE…",
   "topic_20260708-093419_71d1fea2e4b5a40f": "src/components/Dir…",
-  "topic_20260708-095428_990617acd4168b40": "新的会话"
+  "topic_20260708-095428_990617acd4168b40": "帮我检查一下这个应用在进行放大缩小的…"
 }
\ No newline at end of file
diff --git a/src-tauri/tauri.conf.json b/src-tauri/tauri.conf.json
index b37f409..966a4ba 100644
--- a/src-tauri/tauri.conf.json
+++ b/src-tauri/tauri.conf.json
@@ -17,7 +17,8 @@
         "height": 600,
         "minWidth": 900,
         "minHeight": 600,
-        "decorations": false
+        "decorations": false,
+        "backgroundColor": "#faf9f6"
       }
     ],
     "security": {
diff --git a/src/App.vue b/src/App.vue
index d358fea..8946b37 100644
--- a/src/App.vue
+++ b/src/App.vue
@@ -965,7 +965,7 @@ registerTauriListener("menu-event", (event) => {
       />
 
       <!-- Right: Editor area -->
-      <main class="flex-1 flex flex-col overflow-hidden relative">
+      <main class="flex-1 flex flex-col overflow-hidden relative editor-area">
         <!-- ════════════════ Custom title bar / toolbar ════════════════ -->
         <div
             class="editor-titlebar flex w-full items-center h-10 pl-3 pr-0 select-none shrink-0"
@@ -1239,6 +1239,10 @@ registerTauriListener("menu-event", (event) => {
   border-bottom: 1px solid var(--app-border-strong);
 }
 
+.editor-area {
+  background: var(--app-bg);
+}
+
 .app-footer {
   border-top: 1px solid var(--app-border);
   background: color-mix(in srgb, var(--app-sidebar-bg) 72%, transparent);
diff --git a/src/components/MarkdownEditor.vue b/src/components/MarkdownEditor.vue
index 3f0a419..c5b1438 100644
--- a/src/components/MarkdownEditor.vue
+++ b/src/components/MarkdownEditor.vue
@@ -687,7 +687,7 @@ defineExpose({
 <template>
   <div
     ref="scrollRef"
-    class="flex-1 w-full h-full overflow-auto"
+    class="flex-1 w-full h-full overflow-auto markdown-editor-scroll"
     @wheel.passive
     @keydown.capture="onRootKeydown"
   >
@@ -783,6 +783,11 @@ defineExpose({
 </template>
 
 <style>
+/* ── Scroll container ────────────────────────────────────────────── */
+.markdown-editor-scroll {
+  background: var(--app-bg);
+}
+
 /* ── Markdown Preview Styles (warm palette) ─────────────────────── */
 
 .markdown-preview {