diff --git a/TeXmacs/misc/themes/liii-night.css b/TeXmacs/misc/themes/liii-night.css
index 9124301fa7..eca8917ef5 100644
--- a/TeXmacs/misc/themes/liii-night.css
+++ b/TeXmacs/misc/themes/liii-night.css
@@ -430,18 +430,25 @@ QToolButton#pdf-screenshot-btn {
   qproperty-icon: url(":/pdf-reader/screenshot-white.svg");
 }
 
-QToolButton#pdf-toggle-outline-btn {
+QToolButton#pdf-toggle-outline-btn,
+QToolButton#editor-page-outline-btn {
   qproperty-icon: url(":/pdf-reader/sidebar-white.svg");
   border: 1px solid transparent;
   border-radius: 4px;
 }
 
+QToolButton#editor-page-outline-btn {
+  padding: 2px 6px;
+  color: #ffffff;
+}
+
 QWidget#centralWidget QToolButton#pdf-zoom-out-btn:hover,
 QWidget#centralWidget QToolButton#pdf-zoom-in-btn:hover,
 QWidget#centralWidget QToolButton#pdf-prev-btn:hover,
 QWidget#centralWidget QToolButton#pdf-next-btn:hover,
 QWidget#centralWidget QToolButton#pdf-screenshot-btn:hover,
-QWidget#centralWidget QToolButton#pdf-toggle-outline-btn:hover {
+QWidget#centralWidget QToolButton#pdf-toggle-outline-btn:hover,
+QStatusBar QToolButton#editor-page-outline-btn:hover {
   background-color: rgba(255, 255, 255, 0.06);
 }
 
@@ -451,11 +458,13 @@ QWidget#centralWidget QToolButton#pdf-prev-btn:pressed,
 QWidget#centralWidget QToolButton#pdf-next-btn:pressed,
 QWidget#centralWidget QToolButton#pdf-screenshot-btn:pressed,
 QWidget#centralWidget QToolButton#pdf-screenshot-btn:checked,
-QWidget#centralWidget QToolButton#pdf-toggle-outline-btn:pressed {
+QWidget#centralWidget QToolButton#pdf-toggle-outline-btn:pressed,
+QStatusBar QToolButton#editor-page-outline-btn:pressed {
   background-color: rgba(255, 255, 255, 0.10);
 }
 
-QWidget#centralWidget QToolButton#pdf-toggle-outline-btn:checked {
+QWidget#centralWidget QToolButton#pdf-toggle-outline-btn:checked,
+QStatusBar QToolButton#editor-page-outline-btn:checked {
   background-color: rgba(255, 255, 255, 0.16);
   border: 1px solid rgba(255, 255, 255, 0.25);
 }
diff --git a/TeXmacs/misc/themes/liii.css b/TeXmacs/misc/themes/liii.css
index 70f962caa0..e59d8b1b48 100644
--- a/TeXmacs/misc/themes/liii.css
+++ b/TeXmacs/misc/themes/liii.css
@@ -419,18 +419,25 @@ QToolButton#pdf-screenshot-btn {
   qproperty-icon: url(":/pdf-reader/screenshot.svg");
 }
 
-QToolButton#pdf-toggle-outline-btn {
+QToolButton#pdf-toggle-outline-btn,
+QToolButton#editor-page-outline-btn {
   qproperty-icon: url(":/pdf-reader/sidebar.svg");
   border: 1px solid transparent;
   border-radius: 4px;
 }
 
+QToolButton#editor-page-outline-btn {
+  padding: 2px 6px;
+  color: #2c2c2c;
+}
+
 QToolButton#pdf-zoom-out-btn:hover,
 QToolButton#pdf-zoom-in-btn:hover,
 QToolButton#pdf-prev-btn:hover,
 QToolButton#pdf-next-btn:hover,
 QToolButton#pdf-screenshot-btn:hover,
-QToolButton#pdf-toggle-outline-btn:hover {
+QToolButton#pdf-toggle-outline-btn:hover,
+QToolButton#editor-page-outline-btn:hover {
   background-color: rgba(0, 0, 0, 0.08);
 }
 
@@ -440,11 +447,13 @@ QToolButton#pdf-prev-btn:pressed,
 QToolButton#pdf-next-btn:pressed,
 QToolButton#pdf-screenshot-btn:pressed,
 QToolButton#pdf-screenshot-btn:checked,
-QToolButton#pdf-toggle-outline-btn:pressed {
+QToolButton#pdf-toggle-outline-btn:pressed,
+QToolButton#editor-page-outline-btn:pressed {
   background-color: rgba(0, 0, 0, 0.12);
 }
 
-QToolButton#pdf-toggle-outline-btn:checked {
+QToolButton#pdf-toggle-outline-btn:checked,
+QToolButton#editor-page-outline-btn:checked {
   background-color: rgba(0, 0, 0, 0.12);
   border: 1px solid rgba(0, 0, 0, 0.20);
 }
diff --git a/src/Edit/Interface/edit_footer.cpp b/src/Edit/Interface/edit_footer.cpp
index e90a63ea61..a3463673a7 100644
--- a/src/Edit/Interface/edit_footer.cpp
+++ b/src/Edit/Interface/edit_footer.cpp
@@ -131,7 +131,7 @@ edit_interface_rep::set_middle_footer () {
       current_page_num > 0 ? as_string (current_page_num) : "?";
 
   // 显示页码：当前页 / 总页数（如果总页数未知，显示 ?）
-  string page_display= current_page * string (" / ") * total_pages * "    ";
+  string page_display= current_page * string (" / ") * total_pages;
 
   SERVER (set_middle_footer (
       serialize (tree_translate (tree (page_display), "english", "english"))));
diff --git a/src/Plugins/Qt/qt_tm_widget.cpp b/src/Plugins/Qt/qt_tm_widget.cpp
index 47dbfddb98..ff4219c544 100644
--- a/src/Plugins/Qt/qt_tm_widget.cpp
+++ b/src/Plugins/Qt/qt_tm_widget.cpp
@@ -237,9 +237,10 @@ qt_tm_widget_rep::qt_tm_widget_rep (int mask, command _quit)
       startupTabMode (false), startupChromePending_ (false),
       pdfViewerWidget (nullptr), pdfTabMode (false), currentPdfPath (""),
       chatContentWidget (nullptr), chatTabMode (false), chatSideDock (nullptr),
-      pdfOutlineDock (nullptr), chatSidebarToggleBtn (nullptr),
-      chatSidebarMode (false), chatSidebarModeMemory_ (false),
-      centralWidgetUpdatesFrozen_ (false), centralUnfreezeGeneration_ (0) {
+      pdfOutlineDock (nullptr), pageOutlineBtn (nullptr),
+      chatSidebarToggleBtn (nullptr), chatSidebarMode (false),
+      chatSidebarModeMemory_ (false), centralWidgetUpdatesFrozen_ (false),
+      centralUnfreezeGeneration_ (0) {
   type= texmacs_widget;
 
   main_widget= concrete (::glue_widget (true, true, 1, 1));
@@ -606,6 +607,22 @@ qt_tm_widget_rep::qt_tm_widget_rep (int mask, command _quit)
 
   QStatusBar* bar= new QStatusBar (mw);
   bar->setObjectName ("statusBar");
+
+  pagePrefix    = qt_translate ("Page") + ": ";
+  pageOutlineBtn= new QToolButton (bar);
+  pageOutlineBtn->setObjectName ("editor-page-outline-btn");
+  pageOutlineBtn->setToolButtonStyle (Qt::ToolButtonTextBesideIcon);
+  pageOutlineBtn->setAutoRaise (true);
+  pageOutlineBtn->setCheckable (true);
+  pageOutlineBtn->setIcon (QIcon (":/pdf-reader/sidebar.svg"));
+  pageOutlineBtn->setIconSize (
+      QSize (DpiUtils::scaled (16), DpiUtils::scaled (16)));
+  pageOutlineBtn->setText (pagePrefix + "1 / 1");
+  pageOutlineBtn->setToolTip (qt_translate ("Outline"));
+
+  QObject::connect (pageOutlineBtn, &QToolButton::clicked,
+                    [this] () { toggle_outline_sidebar (); });
+
   leftLabel  = new QLabel (qt_translate ("Welcome to TeXmacs"), bar);
   middleLabel= new QLabel ("", bar);
   rightLabel = new QLabel (qt_translate ("Booting"), bar);
@@ -619,8 +636,8 @@ qt_tm_widget_rep::qt_tm_widget_rep (int mask, command _quit)
   leftLabel->setAlignment (Qt::AlignLeft | Qt::AlignVCenter);
   rightLabel->setAlignment (Qt::AlignRight | Qt::AlignVCenter);
 
-  // Add all three labels with equal stretch factors for equal width
-  // distribution
+  // Add widgets: pageOutlineBtn at the left, then labels
+  bar->addWidget (pageOutlineBtn);
   bar->addWidget (leftLabel, 1);
   bar->addWidget (middleLabel, 1);
   bar->addPermanentWidget (rightLabel, 1);
@@ -744,10 +761,8 @@ qt_tm_widget_rep::qt_tm_widget_rep (int mask, command _quit)
             .arg (h));
     pdfToolBar->setVisible (false);
 
-    QObject::connect (pdfToolBar, &PdfToolBar::toggleOutlineClicked, [this] () {
-      call ("toggle-outline-sidebar");
-      update_visibility ();
-    });
+    QObject::connect (pdfToolBar, &PdfToolBar::toggleOutlineClicked,
+                      [this] () { toggle_outline_sidebar (); });
   }
 
   QWidget* cw= new QWidget ();
@@ -961,6 +976,9 @@ qt_tm_widget_rep::qt_tm_widget_rep (int mask, command _quit)
             pdfToolBar->setOutlineEnabled (hasContent);
             pdfToolBar->setOutlineChecked (visible && hasContent);
           }
+          if (pageOutlineBtn && is_editor_tab_mode ()) {
+            pageOutlineBtn->setChecked (visible);
+          }
         });
 
     QObject::connect (pdfOutlineDock, &OutlineWidget::outlineActivated,
@@ -1640,6 +1658,17 @@ native_menubar_pref_on () {
 #endif
 }
 
+void
+qt_tm_widget_rep::toggle_outline_sidebar () {
+  call ("toggle-outline-sidebar");
+  update_visibility ();
+}
+
+bool
+qt_tm_widget_rep::is_editor_tab_mode () const {
+  return !startupTabMode && !pdfTabMode && !chatTabMode;
+}
+
 void
 qt_tm_widget_rep::update_visibility () {
 #define XOR(exp1, exp2) (((!exp1) && (exp2)) || ((exp1) && (!exp2)))
@@ -1791,6 +1820,12 @@ qt_tm_widget_rep::update_visibility () {
     pdfToolBar->setOutlineChecked (new_pdfOutlineVisibility);
   }
 
+  if (pageOutlineBtn) {
+    bool shouldShow= is_editor_tab_mode ();
+    pageOutlineBtn->setVisible (shouldShow);
+    if (shouldShow) pageOutlineBtn->setChecked (new_pdfOutlineVisibility);
+  }
+
   // AI 聊天侧边栏浮动按钮可见性（community 版无 AI Chat，始终隐藏）
   if (chatSidebarToggleBtn) {
     bool shouldShow= !is_community_stem () && !chatTabMode &&
@@ -2011,8 +2046,7 @@ qt_tm_widget_rep::send (slot s, blackbox val) {
   case SLOT_MIDDLE_FOOTER: {
     check_type<string> (val, s);
     string msg= open_box<string> (val);
-    middleLabel->setText (to_qstring (msg));
-    middleLabel->update ();
+    if (pageOutlineBtn) pageOutlineBtn->setText (pagePrefix + to_qstring (msg));
   } break;
   case SLOT_RIGHT_FOOTER: {
     check_type<string> (val, s);
@@ -2029,6 +2063,8 @@ qt_tm_widget_rep::send (slot s, blackbox val) {
 
     if (open_box<bool> (val) == true) {
       prompt= new QTMInteractivePrompt (int_prompt, int_input);
+      if (pageOutlineBtn)
+        mainwindow ()->statusBar ()->removeWidget (pageOutlineBtn);
       mainwindow ()->statusBar ()->removeWidget (leftLabel);
       mainwindow ()->statusBar ()->removeWidget (middleLabel);
       mainwindow ()->statusBar ()->removeWidget (rightLabel);
@@ -2038,6 +2074,10 @@ qt_tm_widget_rep::send (slot s, blackbox val) {
     else {
       if (prompt) prompt->end ();
       mainwindow ()->statusBar ()->removeWidget (prompt);
+      if (pageOutlineBtn) {
+        mainwindow ()->statusBar ()->addWidget (pageOutlineBtn);
+        pageOutlineBtn->setVisible (is_editor_tab_mode ());
+      }
       mainwindow ()->statusBar ()->addWidget (leftLabel, 1);
       mainwindow ()->statusBar ()->addWidget (middleLabel, 1);
       mainwindow ()->statusBar ()->addPermanentWidget (rightLabel, 1);
diff --git a/src/Plugins/Qt/qt_tm_widget.hpp b/src/Plugins/Qt/qt_tm_widget.hpp
index f019a2cd82..aeb9eb6f67 100644
--- a/src/Plugins/Qt/qt_tm_widget.hpp
+++ b/src/Plugins/Qt/qt_tm_widget.hpp
@@ -42,6 +42,7 @@
 
 class QLabel;
 class QToolBar;
+class QToolButton;
 class QTMInteractivePrompt;
 class PDFReaderWidget;
 class PdfToolBar;
@@ -70,21 +71,23 @@ class qt_tm_widget_rep : public qt_window_widget_rep {
    tab_tools_visibility     = 1024
    } visibility_t;
    */
-  QLabel*                 rightLabel;
-  QLabel*                 leftLabel;
-  QLabel*                 middleLabel;
-  QToolBar*               menuToolBar;
-  QToolBar*               mainToolBar;
-  QToolBar*               modeToolBar;
-  QToolBar*               focusToolBar;
-  QToolBar*               userToolBar;
-  PdfToolBar*             pdfToolBar; ///< PDF 阅读器工具栏
-  QDockWidget*            sideTools;
-  QDockWidget*            leftTools;
-  QDockWidget*            bottomTools;
-  QDockWidget*            extraTools;
-  QDockWidget*            chatSideDock;   ///< AI 聊天侧边栏 Dock
-  OutlineWidget*          pdfOutlineDock; ///< PDF 目录（大纲）侧边栏 Dock
+  QLabel*        rightLabel;
+  QLabel*        leftLabel;
+  QLabel*        middleLabel;
+  QToolButton*   pageOutlineBtn; ///< 文档编辑界面左下角展示/隐藏目录的页码按钮
+  QString        pagePrefix;     ///< 页码按钮文本前缀（构造时翻译一次）
+  QToolBar*      menuToolBar;
+  QToolBar*      mainToolBar;
+  QToolBar*      modeToolBar;
+  QToolBar*      focusToolBar;
+  QToolBar*      userToolBar;
+  PdfToolBar*    pdfToolBar; ///< PDF 阅读器工具栏
+  QDockWidget*   sideTools;
+  QDockWidget*   leftTools;
+  QDockWidget*   bottomTools;
+  QDockWidget*   extraTools;
+  QDockWidget*   chatSideDock;   ///< AI 聊天侧边栏 Dock
+  OutlineWidget* pdfOutlineDock; ///< PDF 目录（大纲）侧边栏 Dock
   QTMTabPageContainer*    tabPageContainer;
   QTMAuxiliaryWidget*     auxiliaryWidget;
   QWK::WidgetWindowAgent* windowAgent;
@@ -289,8 +292,12 @@ class qt_tm_widget_rep : public qt_window_widget_rep {
   virtual widget   read (slot s, blackbox index);
   virtual void     write (slot s, blackbox index, widget w);
 
-  void        set_full_screen (bool flag);
-  void        update_visibility ();
+  void set_full_screen (bool flag);
+  void update_visibility ();
+  /// 当前是否为普通文档编辑标签页（非启动页/PDF/聊天模式）。
+  bool is_editor_tab_mode () const;
+  /// 切换目录侧边栏并刷新可见性（页码按钮与 PDF 工具栏共用）。
+  void        toggle_outline_sidebar ();
   void        install_main_menu ();
   void        apply_notification_bar_content ();
   void        flush_startup_deferred_chrome ();