diff --git a/src/ui/FramelessDelegateWin.cpp b/src/ui/FramelessDelegateWin.cpp
index d0f98894..e52b93d1 100644
--- a/src/ui/FramelessDelegateWin.cpp
+++ b/src/ui/FramelessDelegateWin.cpp
@@ -24,10 +24,9 @@ namespace Gdiplus
 
 #include "FrameTitleBar.h"
 
-#pragma comment (lib,"Dwmapi.lib") // Adds missing library, fixes error LNK2019: unresolved external symbol __imp__DwmExtendFrameIntoClientArea
+#pragma comment (lib,"Dwmapi.lib") 
 #pragma comment (lib,"user32.lib")
 
-// 无边框样式：不使用 CAPTION 与系统按钮，避免在 Win7 显示原生按钮
 constexpr unsigned long BorderlessFlag = WS_POPUP | WS_THICKFRAME | WS_SYSMENU;
 
 inline bool IsCompositionEnabled() {
@@ -103,10 +102,9 @@ bool FramelessDelegateWin::nativeEvent(const QByteArray & eventType, void* messa
                     return true;
                 }
                 NCCALCSIZE_PARAMS* ncParam = reinterpret_cast<NCCALCSIZE_PARAMS*>(msg->lParam);
-                // 最大化时将客户区严格对齐到工作区，避免左右空隙
                 ncParam->rgrc[0].left = rc->left();
                 ncParam->rgrc[0].top = rc->top();
-                ncParam->rgrc[0].right = rc->right();
+                ncParam->rgrc[0].right = rc->right() + 1;
                 ncParam->rgrc[0].bottom = rc->bottom();
                 *result = 0;
                 return true;
@@ -123,7 +121,7 @@ bool FramelessDelegateWin::nativeEvent(const QByteArray & eventType, void* messa
                 } else {
                     clientRect->top = before.top;
                     clientRect->left = before.left;
-                    clientRect->right = before.right;
+                    clientRect->right = before.right + 1;
                     clientRect->bottom = before.bottom + 1;
                 }
             }
@@ -132,12 +130,8 @@ bool FramelessDelegateWin::nativeEvent(const QByteArray & eventType, void* messa
         return true;
     }
     case WM_NCPAINT: {
-        if (!IsCompositionEnabled()) {
-            *result = 0;
-            return true;
-        } else {
-            break;
-        }
+        *result = 0;
+        return true;
     }
     case WM_SETFOCUS: {
         Qt::FocusReason reason;
@@ -153,17 +147,13 @@ bool FramelessDelegateWin::nativeEvent(const QByteArray & eventType, void* messa
     }
     break;
     case WM_NCACTIVATE: {
-        if (!IsCompositionEnabled()) {
-            *result = 1;
-            return true;
-        }
+        *result = 1;
+        return true;
     }
-    break;
     case WM_NCHITTEST: {
         return OnNCTitTest(msg, result);
     }
     case WM_GETMINMAXINFO: {
-        // 使用工作区定义最大化位置与大小，避免遮挡任务栏
         MINMAXINFO* mmi = reinterpret_cast<MINMAXINFO*>(msg->lParam);
         HMONITOR monitor = MonitorFromWindow(msg->hwnd, MONITOR_DEFAULTTONEAREST);
         MONITORINFO mi;
@@ -172,17 +162,19 @@ bool FramelessDelegateWin::nativeEvent(const QByteArray & eventType, void* messa
         if (monitor && GetMonitorInfo(monitor, &mi)) {
             const RECT& work = mi.rcWork;
             const RECT& rcMon = mi.rcMonitor;
-            mmi->ptMaxPosition.x = work.left;
-            mmi->ptMaxPosition.y = work.top;
-            mmi->ptMaxSize.x = work.right - work.left;
-            mmi->ptMaxSize.y = work.bottom - work.top;
-            // 限制拖动最大尺寸为监视器大小（非必须，但较合理）
-            mmi->ptMaxTrackSize.x = rcMon.right - rcMon.left;
-            mmi->ptMaxTrackSize.y = rcMon.bottom - rcMon.top;
+            const int frameX = GetSystemMetrics(SM_CXFRAME) + GetSystemMetrics(SM_CXPADDEDBORDER);
+            const int frameY = GetSystemMetrics(SM_CYFRAME) + GetSystemMetrics(SM_CXPADDEDBORDER);
+
+            mmi->ptMaxPosition.x = work.left - frameX;
+            mmi->ptMaxPosition.y = work.top - frameY;
+            mmi->ptMaxSize.x = (work.right - work.left) + frameX * 2;
+            mmi->ptMaxSize.y = (work.bottom - work.top) + frameY * 2;
+
+            mmi->ptMaxTrackSize.x = (rcMon.right - rcMon.left) + frameX * 2;
+            mmi->ptMaxTrackSize.y = (rcMon.bottom - rcMon.top) + frameY * 2;
         }
 
         if (::IsZoomed(msg->hwnd)) {
-            // 最大化时不叠加系统边框内边距
             frames_.setLeft(0);
             frames_.setTop(0);
             frames_.setRight(0);
@@ -230,7 +222,6 @@ void FramelessDelegateWin::OnShow() {
     }
 
     mainWidget_->setAttribute(Qt::WA_Resized);
-    // 仅当存在有效的窗口放置信息（length 已设置）时才恢复窗口位置，避免首次显示使用未初始化的数据
     if (!isFirstShow_ && mainWidget_->isMaximized() && wndPlaceMent_.length == sizeof(wndPlaceMent_)) {
         QMetaObject::invokeMethod(
             this,
@@ -374,15 +365,12 @@ void FramelessDelegateWin::SetNativeWindowLong() {
     }
     HWND hwnd = reinterpret_cast<HWND>(mainWidget_->winId());
     unsigned long style = BorderlessFlag;
-    // 避免父窗口与子窗口重叠绘制导致闪烁，启用剪裁样式
     style |= WS_CLIPCHILDREN | WS_CLIPSIBLINGS;
 
-    // 显式清理可能由 Qt 或系统设置的标题栏与系统按钮标志，确保不显示原生按钮
     style &= ~WS_CAPTION;
     style &= ~WS_MINIMIZEBOX;
     style &= ~WS_MAXIMIZEBOX;
 
-    // 根据 Qt 窗口标志与大小约束，启用系统最小化/最大化按钮能力
     const bool canResize = (mainWidget_->maximumSize() == QSize(QWIDGETSIZE_MAX, QWIDGETSIZE_MAX));
     if (mainWidget_->windowFlags().testFlag(Qt::WindowMinimizeButtonHint) && canResize) {
         style |= WS_MINIMIZEBOX;
@@ -394,7 +382,7 @@ void FramelessDelegateWin::SetNativeWindowLong() {
     ::SetWindowLongPtr(hwnd, GWL_STYLE, style);
 
     if (IsCompositionEnabled()) {
-        ExtendFrameIntoClientArea(mainWidget_->windowHandle(), 1, 0, 0, 0);
+        ExtendFrameIntoClientArea(mainWidget_->windowHandle(), 1, 1, 0, 0);
     }
     RECT rect;
     GetWindowRect(hwnd, &rect);
@@ -445,10 +433,6 @@ bool FramelessDelegateWin::OnNCTitTest(MSG* msg, qintptr* result) {
                 *result = HTTOP;
                 return true;
             }
-            if (y > rect.top() + borderY && y < rect.top() + borderY) {
-                *result = HTCAPTION;
-                return true;
-            }
             if (!maxSized && y >= rect.bottom() - borderY && y <= rect.bottom()) {
                 *result = HTBOTTOM;
                 return true;
diff --git a/src/ui/MainFrame.ui b/src/ui/MainFrame.ui
index 228bbd04..851c95b3 100644
--- a/src/ui/MainFrame.ui
+++ b/src/ui/MainFrame.ui
@@ -18,16 +18,16 @@
     <number>0</number>
    </property>
    <property name="leftMargin">
-    <number>0</number>
+    <number>6</number>
    </property>
    <property name="topMargin">
     <number>0</number>
    </property>
    <property name="rightMargin">
-    <number>0</number>
+    <number>6</number>
    </property>
    <property name="bottomMargin">
-    <number>0</number>
+    <number>6</number>
    </property>
    <item>
     <widget class="FrameTitleBar" name="titleFrame">
@@ -55,7 +55,7 @@
     <widget class="QWidget" name="body" native="true">
      <layout class="QVBoxLayout" name="verticalLayout">
       <property name="spacing">
-       <number>2</number>
+       <number>0</number>
       </property>
       <property name="leftMargin">
        <number>0</number>
@@ -64,10 +64,10 @@
        <number>3</number>
       </property>
       <property name="rightMargin">
-       <number>0</number>
+       <number>3</number>
       </property>
       <property name="bottomMargin">
-       <number>0</number>
+       <number>6</number>
       </property>
       <item>
        <widget class="QStackedWidget" name="menuWidget">