diff --git a/src/App.vue b/src/App.vue
index dff72bf..5cf95ba 100644
--- a/src/App.vue
+++ b/src/App.vue
@@ -39,14 +39,14 @@
       ⚠️ {{ errorMsg }}
     </div>
 
-    <!-- 右上角 Toast 通知 (扫描完成提示) -->
+    <!-- 右上角 Toast 通知 (通用化) -->
     <transition name="toast-slide">
-      <div v-if="showToast" class="toast-notification">
+      <div v-if="toast.show" class="toast-notification" :class="toast.type">
         <div class="toast-content">
-          <span class="check-icon">✅</span>
+          <span class="check-icon">{{ toast.type === 'error' ? '❌' : '✅' }}</span>
           <div class="toast-text">
-            <h4>扫描已完成</h4>
-            <p>所有硬件与日志检查完毕</p>
+            <h4>{{ toast.title }}</h4>
+            <p>{{ toast.message }}</p>
           </div>
         </div>
         <div class="toast-progress"></div>
@@ -203,7 +203,7 @@
 </template>
 
 <script setup>
-import { ref, computed, onUnmounted } from 'vue';
+import { ref, computed, onUnmounted, reactive } from 'vue';
 import { invoke } from '@tauri-apps/api/core';
 import { listen } from '@tauri-apps/api/event';
 
@@ -214,11 +214,18 @@ const emptyReport = () => ({
 const report = ref(emptyReport());
 const loading = ref(false);
 const errorMsg = ref('');
-const showToast = ref(false);
 const fileInput = ref(null);
 let unlistenFns = [];
 let toastTimer = null;
 
+// 通用 Toast 状态
+const toast = reactive({
+  show: false,
+  title: '',
+  message: '',
+  type: 'success' // 'success' | 'error'
+});
+
 const hasStorageDanger = computed(() => report.value?.storage?.some(d => d.is_danger) || false);
 const isReportValid = computed(() => report.value && (report.value.hardware || report.value.storage));
 
@@ -233,16 +240,49 @@ function getBatteryColor(p) { return p < 50 ? '#ff4757' : (p < 80 ? '#ffa502' :
 function formatTime(t) { return !t ? "Unknown Time" : t.replace('T', ' ').substring(0, 19); }
 
 // --- 导出/导入 ---
-function exportReport() {
+async function exportReport() {
   if (!isReportValid.value) return;
+  const fileName = `SystemDoctor_Report_${new Date().toISOString().slice(0, 19).replace(/[:T]/g, "-")}.json`;
+  const content = JSON.stringify(report.value, null, 2);
+
+  // 尝试使用现代文件系统 API (显示保存对话框)
+  if (window.showSaveFilePicker) {
+    try {
+      const handle = await window.showSaveFilePicker({
+        suggestedName: fileName,
+        types: [{
+          description: 'JSON Report',
+          accept: { 'application/json': ['.json'] },
+        }],
+      });
+      const writable = await handle.createWritable();
+      await writable.write(content);
+      await writable.close();
+      triggerToast('导出成功', '文件已保存到指定位置', 'success');
+      return;
+    } catch (err) {
+      // 用户取消不报错，其他错误降级处理
+      if (err.name !== 'AbortError') {
+        console.warn('Native save dialog failed, falling back to download link', err);
+      } else {
+        return; // 用户取消
+      }
+    }
+  }
+
+  // 降级方案：创建链接直接下载 (默认下载文件夹)
   try {
-    const blob = new Blob([JSON.stringify(report.value, null, 2)], { type: "application/json" });
+    const blob = new Blob([content], { type: "application/json" });
     const url = URL.createObjectURL(blob);
     const link = document.createElement('a');
     link.href = url;
-    link.download = `SystemDoctor_Report_${new Date().toISOString().slice(0, 19).replace(/[:T]/g, "-")}.json`;
+    link.download = fileName;
     document.body.appendChild(link); link.click(); document.body.removeChild(link); URL.revokeObjectURL(url);
-  } catch (err) { errorMsg.value = "导出失败: " + err.message; }
+    triggerToast('导出成功', '文件已保存到默认下载目录', 'success');
+  } catch (err) { 
+    errorMsg.value = "导出失败: " + err.message; 
+    triggerToast('导出失败', err.message, 'error');
+  }
 }
 
 function triggerImport() { fileInput.value.click(); }
@@ -254,9 +294,17 @@ function handleFileImport(event) {
     try {
       const json = JSON.parse(e.target.result);
       if (json && (json.hardware || json.storage)) {
-        report.value = json; errorMsg.value = '';
-      } else { errorMsg.value = "无效的报告文件。"; }
-    } catch (err) { errorMsg.value = "解析失败: " + err.message; }
+        report.value = json; 
+        errorMsg.value = '';
+        triggerToast('导入成功', '已加载历史报告数据', 'success');
+      } else { 
+        errorMsg.value = "无效的报告文件。"; 
+        triggerToast('导入失败', '文件格式不正确', 'error');
+      }
+    } catch (err) { 
+      errorMsg.value = "解析失败: " + err.message; 
+      triggerToast('导入失败', err.message, 'error');
+    }
   };
   reader.readAsText(file);
   event.target.value = '';
@@ -266,7 +314,6 @@ function handleFileImport(event) {
 async function startScan() {
   report.value = emptyReport();
   errorMsg.value = '';
-  showToast.value = false; // 重置 Toast
   loading.value = true;
 
   if (unlistenFns.length > 0) { for (const fn of unlistenFns) fn(); unlistenFns = []; }
@@ -280,7 +327,7 @@ async function startScan() {
     const l6 = await listen('report-events', (e) => report.value.events = e.payload);
     const l7 = await listen('diagnosis-finished', () => {
       loading.value = false;
-      triggerToast(); // 触发 Toast
+      triggerToast('扫描已完成', '所有硬件与日志检查完毕', 'success');
     });
     unlistenFns.push(l1, l2, l3, l4, l5, l6, l7);
     await invoke('run_diagnosis');
@@ -288,15 +335,20 @@ async function startScan() {
     console.error(e);
     errorMsg.value = "启动扫描失败: " + e;
     loading.value = false;
+    triggerToast('扫描失败', '无法启动后台诊断程序', 'error');
   }
 }
 
 // --- Toast 逻辑 ---
-function triggerToast() {
-  showToast.value = true;
+function triggerToast(title, message, type = 'success') {
+  toast.title = title;
+  toast.message = message;
+  toast.type = type;
+  toast.show = true;
+  
   if (toastTimer) clearTimeout(toastTimer);
   toastTimer = setTimeout(() => {
-    showToast.value = false;
+    toast.show = false;
   }, 3000);
 }
 
@@ -361,7 +413,7 @@ h1 { font-size: 1.5rem; margin: 0; color: #2c3e50; font-weight: 700; letter-spac
 .icon-btn:hover:not(:disabled) { background: #f0f2f5; color: #2c3e50; }
 .icon-btn:disabled { color: #ccc; cursor: not-allowed; }
 
-/* --- Toast 通知 --- */
+/* --- Toast 通知 (增强版) --- */
 .toast-notification {
   position: fixed; top: 25px; right: 25px; z-index: 9999;
   background: white; border-left: 5px solid #2ecc71;
@@ -369,6 +421,8 @@ h1 { font-size: 1.5rem; margin: 0; color: #2c3e50; font-weight: 700; letter-spac
   box-shadow: 0 5px 20px rgba(0,0,0,0.15);
   min-width: 280px; overflow: hidden;
 }
+.toast-notification.error { border-left-color: #ff4757; }
+
 .toast-content { display: flex; align-items: flex-start; gap: 12px; }
 .check-icon { font-size: 1.2rem; }
 .toast-text h4 { margin: 0 0 4px 0; font-size: 1rem; color: #2c3e50; }
@@ -379,6 +433,8 @@ h1 { font-size: 1.5rem; margin: 0; color: #2c3e50; font-weight: 700; letter-spac
   position: absolute; bottom: 0; left: 0; height: 3px; background: #2ecc71;
   width: 100%; animation: progress 3s linear forwards;
 }
+.toast-notification.error .toast-progress { background: #ff4757; }
+
 @keyframes progress { from { width: 100%; } to { width: 0%; } }
 
 /* Toast 进出动画 */