diff --git a/frontend/components/dashboard/Dashboard.module.css b/frontend/components/dashboard/Dashboard.module.css
index 877e502a..36510951 100644
--- a/frontend/components/dashboard/Dashboard.module.css
+++ b/frontend/components/dashboard/Dashboard.module.css
@@ -127,102 +127,6 @@
     inset 0 0 0 1px rgba(34, 211, 238, 0.04);
 }
 
-.root :global(.home-map-toolbar) {
-  position: fixed;
-  top: calc(var(--header-height) + 30px);
-  right: 412px;
-  z-index: 930;
-  display: flex;
-  align-items: center;
-  gap: 10px;
-}
-
-.root :global(.home-map-header) {
-  position: fixed;
-  top: calc(var(--header-height) + 28px);
-  left: calc(var(--sidebar-width) + 42px);
-  z-index: 930;
-  display: flex;
-  align-items: center;
-}
-
-.root :global(.home-map-title) {
-  display: flex;
-  flex-direction: column;
-  gap: 4px;
-}
-
-.root :global(.home-map-title strong) {
-  color: #f8fafc;
-  font-size: 15px;
-  font-weight: 750;
-}
-
-.root :global(.home-map-title span) {
-  color: rgba(148, 163, 184, 0.76);
-  font-size: 11px;
-  font-weight: 600;
-}
-
-.root :global(.home-map-modes) {
-  display: inline-flex;
-  align-items: center;
-  gap: 4px;
-  padding: 4px;
-  border-radius: 14px;
-  border: 1px solid rgba(115, 137, 161, 0.18);
-  background: rgba(6, 12, 22, 0.88);
-  backdrop-filter: blur(16px);
-}
-
-.root :global(.home-map-modes button),
-.root :global(.home-map-expand) {
-  border: none;
-  color: rgba(203, 213, 225, 0.88);
-  background: transparent;
-  cursor: pointer;
-  font: inherit;
-  transition: var(--transition);
-}
-
-.root :global(.home-map-modes button) {
-  display: inline-flex;
-  align-items: center;
-  gap: 6px;
-  padding: 10px 14px;
-  border-radius: 10px;
-  font-size: 12px;
-  font-weight: 700;
-}
-
-.root :global(.home-map-modes button.active) {
-  background: linear-gradient(
-    180deg,
-    rgba(28, 100, 242, 0.76),
-    rgba(31, 72, 184, 0.76)
-  );
-  color: #f8fafc;
-  box-shadow: 0 10px 24px rgba(37, 99, 235, 0.24);
-}
-
-.root :global(.home-map-modes button:hover),
-.root :global(.home-map-expand:hover) {
-  color: #f8fafc;
-  background: rgba(30, 41, 59, 0.72);
-}
-
-.root :global(.home-map-expand) {
-  width: 38px;
-  height: 38px;
-  border-radius: 12px;
-  border: 1px solid rgba(115, 137, 161, 0.18);
-  background: rgba(6, 12, 22, 0.88);
-  backdrop-filter: blur(16px);
-  display: inline-flex;
-  align-items: center;
-  justify-content: center;
-}
-
 .weatherAura {
   position: absolute;
   inset: 0;
@@ -525,6 +429,42 @@
   animation: spin 1s linear infinite;
 }
 
+.root :global(.locale-switch) {
+  height: 32px;
+  padding: 3px;
+  border-radius: 10px;
+  border: 1px solid rgba(34, 211, 238, 0.2);
+  background: rgba(8, 15, 27, 0.82);
+  color: rgba(148, 163, 184, 0.86);
+  display: inline-flex;
+  align-items: center;
+  gap: 2px;
+  font-size: 11px;
+  font-weight: 750;
+  cursor: pointer;
+  transition: var(--transition);
+}
+
+.root :global(.locale-switch span) {
+  min-width: 32px;
+  height: 24px;
+  border-radius: 7px;
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+}
+
+.root :global(.locale-switch span.active) {
+  color: #f8fafc;
+  background: rgba(34, 211, 238, 0.16);
+  box-shadow: inset 0 0 0 1px rgba(34, 211, 238, 0.24);
+}
+
+.root :global(.locale-switch:hover) {
+  border-color: rgba(34, 211, 238, 0.34);
+  background: rgba(11, 22, 40, 0.94);
+}
+
 .root :global(.header-utility-btn) {
   min-width: 32px;
   height: 32px;
@@ -2405,7 +2345,6 @@
     );
 }
 
-:global(html.light) .root :global(.home-map-title strong),
 :global(html.light) .root :global(.home-panel-city h2),
 :global(html.light) .root :global(.home-weather-main strong),
 :global(html.light) .root :global(.home-weather-stat strong),
@@ -2419,7 +2358,6 @@
   color: #0b1726;
 }
 
-:global(html.light) .root :global(.home-map-title span),
 :global(html.light) .root :global(.home-panel-subtitle),
 :global(html.light) .root :global(.home-weather-sub),
 :global(html.light) .root :global(.home-weather-label),
@@ -2450,6 +2388,18 @@
     0 10px 24px rgba(31, 64, 104, 0.12);
 }
 
+:global(html.light) .root :global(.locale-switch) {
+  background: rgba(255, 255, 255, 0.82);
+  border-color: rgba(36, 68, 104, 0.16);
+  color: rgba(66, 84, 108, 0.78);
+}
+
+:global(html.light) .root :global(.locale-switch span.active) {
+  color: #075985;
+  background: rgba(14, 165, 233, 0.14);
+  box-shadow: inset 0 0 0 1px rgba(14, 165, 233, 0.22);
+}
+
 :global(html.light) .root :global(.city-list),
 :global(html.light) .root :global(.home-intelligence-panel),
 :global(html.light) .root :global(.home-opportunity-strip) {
diff --git a/frontend/components/dashboard/HeaderBar.tsx b/frontend/components/dashboard/HeaderBar.tsx
index 00da0b21..f5c1f857 100644
--- a/frontend/components/dashboard/HeaderBar.tsx
+++ b/frontend/components/dashboard/HeaderBar.tsx
@@ -39,7 +39,7 @@ export function HeaderBar({
   refreshSpinning?: boolean;
 }) {
   const store = useDashboardStore();
-  const { locale, t } = useI18n();
+  const { locale, t, toggleLocale } = useI18n();
   const pathname = usePathname();
   const [theme, setTheme] = useState<"dark" | "light">("dark");
   const isAuthenticated = store.proAccess.authenticated;
@@ -169,6 +169,17 @@ export function HeaderBar({
       </nav>
 
       <div className="header-right">
+        <button
+          type="button"
+          className="locale-switch"
+          aria-label={locale === "en-US" ? "Switch to Chinese" : "切换到英文"}
+          title={locale === "en-US" ? "Switch to Chinese" : "切换到英文"}
+          onClick={toggleLocale}
+        >
+          <span className={clsx(locale === "zh-CN" && "active")}>中文</span>
+          <span className={clsx(locale === "en-US" && "active")}>EN</span>
+        </button>
+
         <div className="live-badge" id="liveBadge">
           <span className="pulse-dot" />
           <span>{t("header.live")}</span>
diff --git a/frontend/components/dashboard/PolyWeatherDashboard.tsx b/frontend/components/dashboard/PolyWeatherDashboard.tsx
index 06edc55d..5ae942e2 100644
--- a/frontend/components/dashboard/PolyWeatherDashboard.tsx
+++ b/frontend/components/dashboard/PolyWeatherDashboard.tsx
@@ -457,24 +457,6 @@ function buildDashboardSummaryCards(
   ];
 }
 
-function HomeMapToolbar() {
-  const { locale } = useI18n();
-  return (
-    <div className="home-map-header">
-      <div className="home-map-title">
-        <strong>
-          {locale === "en-US" ? "Global weather regime" : "全球天气态势"}
-        </strong>
-        <span>
-          {locale === "en-US"
-            ? "Live monitored weather derivatives board"
-            : "天气衍生品实时监控面板"}
-        </span>
-      </div>
-    </div>
-  );
-}
-
 function projectHomeTrendPoint(
   x: number,
   y: number,
@@ -1476,7 +1458,6 @@ function DashboardScreen() {
       )}
     >
       <MapCanvas />
-      <HomeMapToolbar />
       <HeaderBar />
       <CitySidebar />
       {showHomepageChrome ? (