diff --git a/frontend/app/flashcards/page.tsx b/frontend/app/flashcards/page.tsx
index bab4f59..4d8e2d7 100644
--- a/frontend/app/flashcards/page.tsx
+++ b/frontend/app/flashcards/page.tsx
@@ -327,7 +327,10 @@ function FlashcardsContent() {
                 : 'border-transparent text-gray-500 hover:text-gray-700 hover:border-gray-300'
             }`}
           >
-            所有詞卡 ({totalCounts.all})
+            <span className="flex items-center gap-1">
+              <span className="text-blue-500">📚</span>
+              所有詞卡 ({totalCounts.all})
+            </span>
           </button>
           <button
             onClick={() => setActiveTab('favorites')}
diff --git a/frontend/components/Toast.tsx b/frontend/components/Toast.tsx
index e1d1661..903df44 100644
--- a/frontend/components/Toast.tsx
+++ b/frontend/components/Toast.tsx
@@ -24,35 +24,51 @@ const TOAST_STYLES = {
   info: 'bg-blue-50 border-blue-200 text-blue-800'
 } as const
 
-export function Toast({ message, type, duration = 3000, onClose }: ToastProps) {
-  const [isVisible, setIsVisible] = useState(false)
+export function Toast({ message, type, duration = 3000, onClose, position, isLatest }: ToastProps & { position: number, isLatest: boolean }) {
+  const [isVisible, setIsVisible] = useState(!isLatest) // 舊通知直接顯示，新通知需要動畫
   const [mounted, setMounted] = useState(false)
+  const [hasShownEntrance, setHasShownEntrance] = useState(!isLatest) // 追蹤是否已經顯示過入場動畫
 
   useEffect(() => {
     setMounted(true)
-    // 出現動畫
-    const showTimer = setTimeout(() => setIsVisible(true), 50)
 
-    // 自動消失
+    // 只有最新的通知且尚未顯示過入場動畫才需要滑入動畫
+    if (isLatest && !hasShownEntrance) {
+      const showTimer = setTimeout(() => {
+        setIsVisible(true)
+        setHasShownEntrance(true)
+      }, 50)
+
+      return () => clearTimeout(showTimer)
+    }
+  }, [isLatest, hasShownEntrance])
+
+  useEffect(() => {
+    // 自動消失計時器
     const hideTimer = setTimeout(() => {
       setIsVisible(false)
       // 等待動畫完成後關閉
       setTimeout(onClose, 300)
     }, duration)
 
-    return () => {
-      clearTimeout(showTimer)
-      clearTimeout(hideTimer)
-    }
+    return () => clearTimeout(hideTimer)
   }, [duration, onClose])
 
   if (!mounted) return null
 
+  // 計算垂直位置：第一個在 top-4，後續每個往下偏移 80px
+  const topPosition = 16 + (position * 80) // 16px (top-4) + 80px * position
+
   return createPortal(
     <div
-      className={`fixed top-4 right-4 z-50 max-w-sm w-full transform transition-all duration-300 ease-in-out ${
-        isVisible ? 'translate-x-0 opacity-100' : 'translate-x-full opacity-0'
+      className={`fixed right-4 z-50 max-w-sm w-full transform ${
+        isLatest
+          ? `transition-all duration-300 ease-in-out ${isVisible ? 'translate-x-0 opacity-100 scale-100' : 'translate-x-full opacity-0 scale-95'}`
+          : 'transition-all duration-300 ease-in-out opacity-100 scale-100 translate-x-0'
       }`}
+      style={{
+        top: `${topPosition}px`
+      }}
     >
       <div className={`rounded-lg border p-4 shadow-lg backdrop-blur-sm ${TOAST_STYLES[type]}`}>
         <div className="flex items-center gap-3">
@@ -82,7 +98,11 @@ export function useToast() {
 
   const showToast = (props: Omit<ToastProps, 'onClose'>) => {
     const id = Math.random().toString(36).substring(2, 11)
-    setToasts(prev => [...prev, { id, props }])
+    setToasts(prev => {
+      const newToasts = [...prev, { id, props }]
+      // 限制最多顯示 5 個通知，移除最舊的
+      return newToasts.length > 5 ? newToasts.slice(-5) : newToasts
+    })
   }
 
   const hideToast = (id: string) => {
@@ -91,10 +111,12 @@ export function useToast() {
 
   const ToastContainer = () => (
     <>
-      {toasts.map(({ id, props }) => (
+      {toasts.map(({ id, props }, index) => (
         <Toast
           key={id}
           {...props}
+          position={index}
+          isLatest={index === toasts.length - 1} // 只有最後一個是最新的
           onClose={() => hideToast(id)}
         />
       ))}