diff --git a/src/lib/rbac.tsx b/src/lib/rbac.tsx
index eb8955e..da6f641 100644
--- a/src/lib/rbac.tsx
+++ b/src/lib/rbac.tsx
@@ -70,15 +70,17 @@ export const NAV: NavGroup[] = [
 // 按当前身份角色过滤导航
 export function navForRole(role: string | null): NavGroup[] {
   const { isAuthed } = useAuth();
-  // 平台管理方：恒显示完整运营管理导航（角色暂未加载时也按 operator 视作，避免「只见园区管理」）
-  if (isAuthed && !isParkUser()) {
-    const r = role || "operator";
+  // 平台管理方：持平台令牌即恒显示完整运营管理导航。
+  // 不再叠加 !isParkUser() —— 避免「本会话曾登录过园区端/残留园区凭据」导致登录后只见园区管理，
+  // 只有刷新/重新拉取身份后才恢复。平台令牌存在即平台优先。
+  if (isAuthed) {
+    const r = role === "operator" ? role : "operator";
     return NAV.map((g) => ({
       ...g,
       items: g.items.filter((i) => !i.roles || i.roles.includes(r)),
     })).filter((g) => g.items.length > 0);
   }
-  // 园区端（园区账密登录，无平台角色）：只显示园区管理（本园区）
+  // 园区端（园区账密登录，无平台令牌）：只显示园区管理（本园区）
   if (isParkUser()) {
     return [{ title: "园区管理", items: [{ to: "/park", label: "园区管理", icon: Building2 }] }];
   }
diff --git a/src/lib/useUrlTab.ts b/src/lib/useUrlTab.ts
new file mode 100644
index 0000000..2e127a3
--- /dev/null
+++ b/src/lib/useUrlTab.ts
@@ -0,0 +1,31 @@
+import * as React from "react";
+import { useSearchParams } from "react-router-dom";
+
+/**
+ * URL 驱动的 Tab 状态：把当前选中项同步到 ``?tab=``，刷新/回退均保持。
+ * key 默认「tab」，可用 ``param`` 覆盖（如一页内多个 Tab 组）。
+ *
+ * 用法：
+ *   const [tab, setTab] = useUrlTab("screens");
+ *   <Tabs value={tab} onValueChange={setTab}>...
+ */
+export function useUrlTab(defaultKey: string, param = "tab"): [string, (v: string) => void] {
+  const [searchParams, setSearchParams] = useSearchParams();
+  const current = searchParams.get(param) || defaultKey;
+
+  const setTab = React.useCallback(
+    (v: string) => {
+      setSearchParams(
+        (prev) => {
+          const next = new URLSearchParams(prev);
+          next.set(param, v);
+          return next;
+        },
+        { replace: true },
+      );
+    },
+    [setSearchParams, param],
+  );
+
+  return [current, setTab];
+}
diff --git a/src/pages/compute/index.tsx b/src/pages/compute/index.tsx
index d41a1c9..1b44f85 100644
--- a/src/pages/compute/index.tsx
+++ b/src/pages/compute/index.tsx
@@ -7,6 +7,7 @@ import { Input } from "@/components/ui/input";
 import { Label } from "@/components/ui/label";
 import { Loader2 } from "lucide-react";
 import { computeApi } from "@/api/resources";
+import { useUrlTab } from "@/lib/useUrlTab";
 import ChannelsPage from "./channels";
 import StatsPage from "./stats";
 import ModelsPage from "./models";
@@ -35,7 +36,7 @@ const TABS = [
 ];
 
 export default function ComputePage() {
-  const [tab, setTab] = React.useState("overview");
+  const [tab, setTab] = useUrlTab("overview", "tab");
 
   return (
     <div>
diff --git a/src/pages/park/index.tsx b/src/pages/park/index.tsx
index 4663f93..645dbfe 100644
--- a/src/pages/park/index.tsx
+++ b/src/pages/park/index.tsx
@@ -3,6 +3,7 @@ import { Card, CardContent } from "@/components/ui/card";
 import { Tabs, TabsContent, TabsList, TabsTrigger } from "@/components/ui/tabs";
 import { Select, SelectContent, SelectItem, SelectTrigger, SelectValue } from "@/components/ui/select";
 import { ParkTenantProvider, useParkTenant } from "./tenant-context";
+import { useUrlTab } from "@/lib/useUrlTab";
 import { TenantTab } from "./tenant-tab";
 import { ScreensTab } from "./screens-tab";
 import { ScreenTab } from "./screen-tab";
@@ -35,13 +36,14 @@ function TenantBar() {
 
 function ParkPageInner() {
   const { tenantId, isParkMode } = useParkTenant();
+  const [tab, setTab] = useUrlTab(isParkMode ? "screens" : "tenant");
   return (
     <div>
       <PageHeader title="园区管理" description={isParkMode ? "园区端：管理本园区屏幕与数据" : "运营端：全园区管理（创建园区、配置各园区）"} />
       <TenantBar />
       <Card>
         <CardContent className="pt-4">
-          <Tabs defaultValue={isParkMode ? "screens" : "tenant"}>
+          <Tabs value={tab} onValueChange={setTab}>
             <TabsList>
               {!isParkMode && <TabsTrigger value="tenant">园区创建</TabsTrigger>}
               <TabsTrigger value="screens">屏幕管理</TabsTrigger>