diff --git a/src/components/CopyButton.tsx b/src/components/CopyButton.tsx
index 64b5314..971e6c2 100644
--- a/src/components/CopyButton.tsx
+++ b/src/components/CopyButton.tsx
@@ -2,6 +2,7 @@ import React, { useEffect, useRef, useState } from 'react';
 import { Check, Copy } from 'lucide-react';
 import { copyTextToClipboard } from '@/utils/clipboard';
 import { Button, type ButtonProps } from '@/components/ui/button';
+import { cn } from '@/lib/utils';
 import { toast } from 'sonner';
 
 interface CopyButtonProps extends Omit<ButtonProps, 'children' | 'onClick'> {
@@ -53,7 +54,7 @@ export const CopyButton: React.FC<CopyButtonProps> = ({
       aria-label={tooltip ?? '复制'}
       variant={variant}
       size={size}
-      className={className}
+      className={cn(className, copied && 'text-emerald-500')}
       {...props}
     >
       {copied ? (
diff --git a/src/utils/ruleStorage.ts b/src/utils/ruleStorage.ts
index d39c107..7ba95ce 100644
--- a/src/utils/ruleStorage.ts
+++ b/src/utils/ruleStorage.ts
@@ -78,7 +78,7 @@ export function save(
       useCount: 0,
     };
     rules.unshift(newRule);
-    setAll(rules);
+    if (!setAll(rules)) return null;
     return newRule;
   }
 
@@ -95,7 +95,7 @@ export function save(
     updatedAt: now,
   };
   rules[index] = updatedRule;
-  setAll(rules);
+  if (!setAll(rules)) return null;
   return updatedRule;
 }
 
@@ -117,7 +117,7 @@ export function update(id: string, updates: Partial<DataRule>): DataRule | null
     updatedAt: Date.now(),
   };
   rules[index] = updatedRule;
-  setAll(rules);
+  if (!setAll(rules)) return null;
   return updatedRule;
 }
 
@@ -132,7 +132,7 @@ export function deleteRule(id: string): boolean {
     return false;
   }
   rules.splice(index, 1);
-  setAll(rules);
+  if (!setAll(rules)) return false;
   return true;
 }
 
@@ -267,11 +267,13 @@ export function clear(): void {
 /**
  * 保存所有规则到存储
  */
-function setAll(rules: DataRule[]): void {
+function setAll(rules: DataRule[]): boolean {
   try {
     localStorage.setItem(STORAGE_KEY, JSON.stringify(rules));
+    return true;
   } catch (error) {
     console.error('[ruleStorage] 保存规则失败:', error);
+    return false;
   }
 }