diff --git a/src/web/features/inbox/components/MaterialContent.tsx b/src/web/features/inbox/components/MaterialContent.tsx
index c14c31d..a57cb7c 100644
--- a/src/web/features/inbox/components/MaterialContent.tsx
+++ b/src/web/features/inbox/components/MaterialContent.tsx
@@ -1,22 +1,14 @@
 import { Card, Descriptions, Tag, Typography } from "antd";
 
-import type { Material, MaterialStatus, MaterialType } from "../types";
+import type { Material, MaterialType } from "../types";
 
 import { formatRelativeTime } from "../../../shared/utils/time";
+import { STATUS_MAP } from "./constants";
 
 interface MaterialContentProps {
   material: Material;
 }
 
-const STATUS_MAP: Record<MaterialStatus, { color: string; label: string }> = {
-  approved: { color: "green", label: "已通过" },
-  discarded: { color: "red", label: "已放弃" },
-  failed: { color: "magenta", label: "失败" },
-  pending: { color: "gold", label: "待处理" },
-  processing: { color: "blue", label: "处理中" },
-  review: { color: "orange", label: "待审核" },
-};
-
 const MATERIAL_TYPE_LABELS: Record<MaterialType, string> = {
   general: "通用",
   meeting: "会议",
@@ -27,7 +19,7 @@ export function MaterialContent({ material }: MaterialContentProps) {
   const typeLabel = MATERIAL_TYPE_LABELS[material.materialType] ?? material.materialType;
 
   return (
-    <div className="app-inbox-content">
+    <>
       <Typography.Title level={4}>素材详情</Typography.Title>
       <Card>
         <Typography.Paragraph>{material.description}</Typography.Paragraph>
@@ -52,6 +44,6 @@ export function MaterialContent({ material }: MaterialContentProps) {
           <Descriptions.Item label="创建时间">{formatRelativeTime(material.createdAt)}</Descriptions.Item>
         </Descriptions>
       </Card>
-    </div>
+    </>
   );
 }
diff --git a/src/web/features/inbox/components/MaterialDetailPanel.tsx b/src/web/features/inbox/components/MaterialDetailPanel.tsx
index 73dfea5..4fffc63 100644
--- a/src/web/features/inbox/components/MaterialDetailPanel.tsx
+++ b/src/web/features/inbox/components/MaterialDetailPanel.tsx
@@ -1,9 +1,8 @@
 import { CheckOutlined, CloseOutlined, RedoOutlined } from "@ant-design/icons";
-import { App as AntApp, Button, Empty, Result, Space, Spin } from "antd";
-
-import type { Material } from "../types";
+import { App as AntApp, Button, Empty, Result, Space, Spin, Tag } from "antd";
 
 import { useMaterial } from "../../../shared/hooks/use-materials";
+import { STATUS_MAP } from "./constants";
 import { MaterialContent } from "./MaterialContent";
 
 interface MaterialDetailPanelProps {
@@ -23,8 +22,10 @@ export function MaterialDetailPanel({
 }: MaterialDetailPanelProps) {
   if (!materialId) {
     return (
-      <div className="app-inbox-content">
-        <Empty description="请在左侧选择素材" />
+      <div className="app-inbox-panel">
+        <div className="app-inbox-content">
+          <Empty description="请在左侧选择素材" />
+        </div>
       </div>
     );
   }
@@ -46,24 +47,30 @@ function MaterialDetailPanelInner({ materialId, onApprove, onDiscard, onRetry, p
 
   if (isLoading) {
     return (
-      <div className="app-inbox-content">
-        <Spin />
+      <div className="app-inbox-panel">
+        <div className="app-inbox-content">
+          <Spin />
+        </div>
       </div>
     );
   }
 
   if (error) {
     return (
-      <div className="app-inbox-content">
-        <Result subTitle="加载素材详情失败" />
+      <div className="app-inbox-panel">
+        <div className="app-inbox-content">
+          <Result subTitle="加载素材详情失败" />
+        </div>
       </div>
     );
   }
 
   if (!data || !materialId) {
     return (
-      <div className="app-inbox-content">
-        <Empty description="请在左侧选择素材" />
+      <div className="app-inbox-panel">
+        <div className="app-inbox-content">
+          <Empty description="请在左侧选择素材" />
+        </div>
       </div>
     );
   }
@@ -97,44 +104,32 @@ function MaterialDetailPanelInner({ materialId, onApprove, onDiscard, onRetry, p
     }
   };
 
+  const statusInfo = STATUS_MAP[data.status] ?? { color: "default", label: data.status };
+
   return (
-    <div className="app-inbox-content">
-      <MaterialContent material={data} />
-      <ActionButtons material={data} onApprove={handleApprove} onDiscard={handleDiscard} onRetry={handleRetry} />
+    <div className="app-inbox-panel">
+      <div className="app-inbox-content">
+        <MaterialContent material={data} />
+      </div>
+      <div className="app-inbox-action-bar">
+        <Tag color={statusInfo.color}>{statusInfo.label}</Tag>
+        {data.status === "review" ? (
+          <Space>
+            <Button icon={<CheckOutlined />} onClick={() => void handleApprove()} type="primary">
+              通过
+            </Button>
+            <Button danger icon={<CloseOutlined />} onClick={() => void handleDiscard()}>
+              放弃
+            </Button>
+          </Space>
+        ) : data.status === "failed" ? (
+          <Space>
+            <Button icon={<RedoOutlined />} onClick={() => void handleRetry()}>
+              重试
+            </Button>
+          </Space>
+        ) : null}
+      </div>
     </div>
   );
 }
-
-interface ActionButtonsProps {
-  material: Material;
-  onApprove: () => Promise<void>;
-  onDiscard: () => Promise<void>;
-  onRetry: () => Promise<void>;
-}
-
-function ActionButtons({ material, onApprove, onDiscard, onRetry }: ActionButtonsProps) {
-  if (material.status === "review") {
-    return (
-      <Space style={{ marginTop: 16 }}>
-        <Button icon={<CheckOutlined />} onClick={() => void onApprove()} type="primary">
-          通过
-        </Button>
-        <Button danger icon={<CloseOutlined />} onClick={() => void onDiscard()}>
-          放弃
-        </Button>
-      </Space>
-    );
-  }
-
-  if (material.status === "failed") {
-    return (
-      <Space style={{ marginTop: 16 }}>
-        <Button icon={<RedoOutlined />} onClick={() => void onRetry()}>
-          重试
-        </Button>
-      </Space>
-    );
-  }
-
-  return null;
-}
diff --git a/src/web/features/inbox/components/constants.ts b/src/web/features/inbox/components/constants.ts
new file mode 100644
index 0000000..00c0899
--- /dev/null
+++ b/src/web/features/inbox/components/constants.ts
@@ -0,0 +1,10 @@
+import type { MaterialStatus } from "../types";
+
+export const STATUS_MAP: Record<MaterialStatus, { color: string; label: string }> = {
+  approved: { color: "green", label: "已通过" },
+  discarded: { color: "red", label: "已放弃" },
+  failed: { color: "magenta", label: "失败" },
+  pending: { color: "gold", label: "待处理" },
+  processing: { color: "blue", label: "处理中" },
+  review: { color: "orange", label: "待审核" },
+};
diff --git a/src/web/styles.css b/src/web/styles.css
index a29c676..393602f 100644
--- a/src/web/styles.css
+++ b/src/web/styles.css
@@ -338,16 +338,31 @@ body {
   overflow: hidden;
 }
 
-.app-inbox-content {
+.app-inbox-panel {
   display: flex;
   flex: 1;
   flex-direction: column;
   min-height: 0;
   min-width: 0;
+}
+
+.app-inbox-content {
+  flex: 1;
+  min-height: 0;
   padding: var(--ant-padding-xl);
   overflow-y: auto;
 }
 
+.app-inbox-action-bar {
+  display: flex;
+  flex-shrink: 0;
+  align-items: center;
+  justify-content: space-between;
+  padding: var(--ant-padding-sm) var(--ant-padding-xl);
+  border-top: 1px solid var(--ant-color-border-secondary);
+  background: var(--ant-color-bg-container);
+}
+
 .app-inbox-datepicker {
   width: 100%;
 }