diff --git a/src/global.less b/src/global.less
index 3d7c02f..41f46b7 100644
--- a/src/global.less
+++ b/src/global.less
@@ -75,36 +75,45 @@ body {
   left: 64px !important;
 }
 
-// Tabs Header样式 - 使用padding-top避免重叠
+// PageContainer Header样式 - 固定悬浮在CustomHeader下方
 div[class*="page-container-header"],
 .ant-pro-page-container > div[class*="page-container-header"],
 .ant-pro-page-container-header {
-  padding-top: 64px !important; /* 等于CustomHeader的高度 */
-  padding-bottom: 0 !important;
-  padding-left: 0 !important;
-  padding-right: 0 !important;
+  position: fixed !important;
+  top: 64px !important; /* CustomHeader的高度 */
+  right: 0 !important;
+  left: 220px !important; /* 侧边栏宽度 */
+  z-index: 1000 !important; /* 低于CustomHeader */
   margin: 0 !important;
+  padding: 6px 24px !important; /* 减小padding */
   background: #ffffff !important;
   border-bottom: 1px solid #f0f0f0 !important;
-  position: relative !important;
+  box-shadow: 0 1px 4px rgba(0,0,0,0.05) !important;
   height: auto !important;
+  min-height: 36px !important; /* 减小最小高度 */
+  max-height: 48px !important; /* 减小最大高度 */
+  display: flex !important;
+  align-items: center !important;
 }
 
-// Tabs header的内部padding
-.ant-pro-page-container-header > div,
-div[class*="page-container-header"] > div {
-  padding: 6px 24px !important; /* 内部padding */
+// 当侧边栏折叠时，调整tabs header的left值
+.ant-layout-sider-collapsed ~ .ant-layout .ant-pro-page-container-header {
+  left: 64px !important;
 }
 
 // 强制PageContainer header样式
 .ant-pro-page-container .ant-pro-page-container-header {
-  padding-top: 64px !important;
-  padding-bottom: 0 !important;
-  padding-left: 0 !important;
-  padding-right: 0 !important;
+  position: fixed !important;
+  top: 64px !important;
+  right: 0 !important;
+  left: 220px !important;
+  z-index: 1000 !important;
   margin: 0 !important;
-  background: #ffffff !important;
-  border-bottom: 1px solid #f0f0f0 !important;
+  padding: 6px 24px !important;
+  min-height: 36px !important;
+  max-height: 48px !important;
+  display: flex !important;
+  align-items: center !important;
 }
 
 // Tabs样式优化 - 减小高度
@@ -113,6 +122,8 @@ div[class*="page-container-header"] .tabs-header-only {
   margin: 0 !important;
   line-height: 1 !important;
   height: auto !important;
+  display: flex !important;
+  align-items: center !important;
 }
 
 .ant-pro-page-container-header .ant-tabs,
@@ -131,6 +142,8 @@ div[class*="page-container-header"] .ant-tabs-nav {
 div[class*="page-container-header"] .ant-tabs-nav-list {
   margin-bottom: 0 !important;
   height: auto !important;
+  display: flex !important;
+  align-items: center !important;
 }
 
 .ant-pro-page-container-header .ant-tabs-tab,
@@ -140,8 +153,8 @@ div[class*="page-container-header"] .ant-tabs-tab {
   border-radius: 4px;
   margin-right: 4px;
   transition: all 0.2s;
-  height: 28px !important; /* 减小标签高度 */
-  line-height: 28px !important;
+  height: 26px !important; /* 进一步减小标签高度 */
+  line-height: 26px !important;
   font-size: 13px;
   display: inline-flex !important;
   align-items: center !important;
@@ -158,7 +171,12 @@ div[class*="page-container-header"] .ant-tabs-ink-bar {
   display: none !important;
 }
 
-// 移除PageContainer原有的间距
+// 内容区域 - 调整padding以适应固定的header
+.ant-pro-grid-content {
+  padding: 24px;
+  padding-top: 120px; /* 64px CustomHeader + 48px tabs header + 8px */
+}
+
 .ant-pro-page-container {
   padding-top: 0 !important;
 }
@@ -167,6 +185,11 @@ div[class*="page-container-header"] .ant-tabs-ink-bar {
   padding-top: 0 !important;
 }
 
+.ant-pro-page-container-children-content {
+  padding-top: 0 !important;
+  padding: 24px !important;
+}
+
 .custom-header .header-left {
   flex: 1;
 }