diff --git a/frontend-web/src/roundtable-planning/pages/RoundtablePlanningPage.tsx b/frontend-web/src/roundtable-planning/pages/RoundtablePlanningPage.tsx
index 9163c070..c0b01eb6 100644
--- a/frontend-web/src/roundtable-planning/pages/RoundtablePlanningPage.tsx
+++ b/frontend-web/src/roundtable-planning/pages/RoundtablePlanningPage.tsx
@@ -1366,7 +1366,7 @@ export default function RoundtablePlanningPage() {
       )}
 
       {/* HEADER */}
-      <header className="relative z-[2000] flex shrink-0 items-center justify-between gap-4 border-b border-slate-100 bg-white px-6 py-3 shadow-[0_1px_3px_rgba(0,0,0,0.02)] dark:border-border dark:bg-card dark:shadow-none">
+      <header className="relative z-[40] flex shrink-0 items-center justify-between gap-4 border-b border-slate-100 bg-white px-6 py-3 shadow-[0_1px_3px_rgba(0,0,0,0.02)] dark:border-border dark:bg-card dark:shadow-none">
         <StepNavigation
           currentStep={currentStep}
           intentReady={step1.intentReady}
diff --git a/frontend-web/src/strategy-components/Header.tsx b/frontend-web/src/strategy-components/Header.tsx
index 0b2e12f7..5e507e62 100644
--- a/frontend-web/src/strategy-components/Header.tsx
+++ b/frontend-web/src/strategy-components/Header.tsx
@@ -294,7 +294,7 @@ const Header = ({ collapsed }: HeaderProps) => {
         open={notificationOpen}
         onOpenChange={setNotificationOpen}
       />
-      <header className="strategy-app-header theme-transition relative z-[2101] flex h-16 items-center justify-between px-4">
+      <header className="strategy-app-header theme-transition relative z-[45] flex h-16 items-center justify-between px-4">
         {showTopNav ? (
           <>
             {/* 左分区（flex-1）：菜单靠右贴近中间基座 */}