diff --git a/app/game/page.tsx b/app/game/page.tsx
index 85c00cb..3216b17 100644
--- a/app/game/page.tsx
+++ b/app/game/page.tsx
@@ -261,7 +261,11 @@ function PuaPanel({ gameReady, hc, waveStarted }: { gameReady: boolean; hc: numb
   const [insufficient, setInsufficient] = useState(false)
   const [dupWarning, setDupWarning] = useState<string | null>(null)
   const textareaRef = useRef<HTMLTextAreaElement>(null)
-  const placeholder = useRef(PUA_PLACEHOLDERS[Math.floor(Math.random() * PUA_PLACEHOLDERS.length)]).current
+  const [placeholder, setPlaceholder] = useState(PUA_PLACEHOLDERS[0])
+  useEffect(() => {
+    // 只在客户端随机选取，避免 SSR/客户端 hydration 不匹配
+    setPlaceholder(PUA_PLACEHOLDERS[Math.floor(Math.random() * PUA_PLACEHOLDERS.length)])
+  }, [])
 
   const cost = calcPuaCost(hc)
   const canAfford = hc >= cost