diff --git a/app.js b/app.js
index 0ffe35d..2b9b6ac 100644
--- a/app.js
+++ b/app.js
@@ -34,12 +34,19 @@ App({
       fail: (err) => {
         console.error('静默登录失败', err)
         this.globalData.isLoggedIn = false
+        this.globalData.loginFailed = true
+
+        // 通知页面登录失败
+        if (this.loginReadyCallback) {
+          this.loginReadyCallback(null)
+        }
       }
     })
   },
 
   globalData: {
     userInfo: null,
-    isLoggedIn: false
+    isLoggedIn: false,
+    loginFailed: false
   }
 })
diff --git a/pages/index/index.js b/pages/index/index.js
index 5dae5dc..fefdc04 100644
--- a/pages/index/index.js
+++ b/pages/index/index.js
@@ -1,19 +1,26 @@
 // index.js
-const { appointmentDB } = require('../../utils/cloud')
+const { appointmentDB, formatRecord } = require('../../utils/cloud')
 const app = getApp()
 
 Page({
   data: {
     isLoggedIn: false,
+    loginFailed: false,
     latestRecord: null
   },
 
   onLoad() {
     if (app.globalData.isLoggedIn) {
       this.onLoginReady()
+    } else if (app.globalData.loginFailed) {
+      this.onLoginFailed()
     } else {
-      app.loginReadyCallback = () => {
-        this.onLoginReady()
+      app.loginReadyCallback = (userInfo) => {
+        if (userInfo) {
+          this.onLoginReady()
+        } else {
+          this.onLoginFailed()
+        }
       }
     }
   },
@@ -25,20 +32,32 @@ Page({
   },
 
   onLoginReady() {
-    this.setData({ isLoggedIn: true })
+    this.setData({ isLoggedIn: true, loginFailed: false })
     this.loadLatestRecord()
   },
 
-  async loadLatestRecord() {
-    if (!this.data.isLoggedIn) {
-      this.setData({ latestRecord: null })
-      return
+  onLoginFailed() {
+    this.setData({ isLoggedIn: false, loginFailed: true })
+  },
+
+  onRetry() {
+    this.setData({ loginFailed: false })
+    app.silentLogin()
+    app.loginReadyCallback = (userInfo) => {
+      if (userInfo) {
+        this.onLoginReady()
+      } else {
+        this.onLoginFailed()
+      }
     }
+  },
+
+  async loadLatestRecord() {
     try {
       const openid = app.globalData.userInfo.openid
       const record = await appointmentDB.getLatest(openid)
       if (record) {
-        this.setData({ latestRecord: this.formatRecord(record) })
+        this.setData({ latestRecord: formatRecord(record) })
       } else {
         this.setData({ latestRecord: null })
       }
@@ -48,19 +67,6 @@ Page({
     }
   },
 
-  formatRecord(record) {
-    const date = record.createTime
-    let createTimeStr = ''
-    if (date) {
-      if (typeof date === 'object' && date.$date) {
-        createTimeStr = new Date(date.$date).toLocaleString('zh-CN')
-      } else {
-        createTimeStr = new Date(date).toLocaleString('zh-CN')
-      }
-    }
-    return { ...record, createTime: createTimeStr }
-  },
-
   goAppointment() {
     wx.navigateTo({
       url: '/pages/appointment/appointment'
diff --git a/pages/index/index.wxml b/pages/index/index.wxml
index e5dd5d7..cbdb92e 100644
--- a/pages/index/index.wxml
+++ b/pages/index/index.wxml
@@ -1,11 +1,18 @@
 <!--index.wxml-->
 <view class="page">
   <!-- loading 遮罩 -->
-  <view class="loading-mask" wx:if="{{!isLoggedIn}}">
+  <view class="loading-mask" wx:if="{{!isLoggedIn && !loginFailed}}">
     <view class="loading-spinner"></view>
     <text class="loading-text">正在获取身份信息...</text>
   </view>
 
+  <!-- 登录失败 -->
+  <view class="loading-mask" wx:if="{{loginFailed}}">
+    <text class="fail-icon">⚠️</text>
+    <text class="fail-text">网络异常，请重试</text>
+    <view class="retry-btn" bindtap="onRetry">重新加载</view>
+  </view>
+
   <view class="header">
     <view class="header-icon">🏢</view>
     <text class="header-title">访客预约系统</text>
diff --git a/pages/index/index.wxss b/pages/index/index.wxss
index d78fba4..ae325c5 100644
--- a/pages/index/index.wxss
+++ b/pages/index/index.wxss
@@ -56,6 +56,30 @@ page {
   color: #999;
 }
 
+/* 登录失败 */
+.fail-icon {
+  font-size: 80rpx;
+  margin-bottom: 20rpx;
+}
+
+.fail-text {
+  font-size: 28rpx;
+  color: #999;
+  margin-bottom: 32rpx;
+}
+
+.retry-btn {
+  font-size: 28rpx;
+  color: #fff;
+  background: #1890ff;
+  padding: 16rpx 56rpx;
+  border-radius: 36rpx;
+}
+
+.retry-btn:active {
+  background: #096dd9;
+}
+
 .header-title {
   font-size: 44rpx;
   font-weight: 700;
@@ -80,11 +104,12 @@ page {
   border-radius: 20rpx;
   padding: 36rpx 32rpx;
   margin-bottom: 24rpx;
-  box-shadow: 0 2rpx 12rpx rgba(0, 0, 0, 0.06);
+  box-shadow: 0 8rpx 32rpx rgba(24, 144, 255, 0.12), 0 2rpx 8rpx rgba(0, 0, 0, 0.06);
 }
 
 .action-card:active {
   background: #f0f0f0;
+  box-shadow: 0 4rpx 16rpx rgba(24, 144, 255, 0.08), 0 1rpx 4rpx rgba(0, 0, 0, 0.04);
 }
 
 .action-icon-wrap {
@@ -140,7 +165,7 @@ page {
   border-radius: 20rpx;
   padding: 28rpx 32rpx;
   margin-top: 8rpx;
-  box-shadow: 0 2rpx 12rpx rgba(0, 0, 0, 0.06);
+  box-shadow: 0 8rpx 32rpx rgba(82, 196, 26, 0.12), 0 2rpx 8rpx rgba(0, 0, 0, 0.06);
 }
 
 .latest-header {
diff --git a/pages/records/records.js b/pages/records/records.js
index c586669..e4bfe7a 100644
--- a/pages/records/records.js
+++ b/pages/records/records.js
@@ -1,5 +1,5 @@
 // records.js
-const { appointmentDB } = require('../../utils/cloud')
+const { appointmentDB, formatRecord } = require('../../utils/cloud')
 const app = getApp()
 
 Page({
@@ -11,18 +11,12 @@ Page({
   },
 
   onLoad() {
-    if (!app.globalData.isLoggedIn) {
-      wx.showToast({ title: '请先登录', icon: 'none' })
-      setTimeout(() => {
-        wx.navigateBack()
-      }, 1500)
-      return
-    }
     this.loadRecords()
   },
 
   onShow() {
-    if (app.globalData.isLoggedIn) {
+    // 仅从预约页返回时刷新，避免 onLoad + onShow 双重加载
+    if (this.data._loaded) {
       this.loadRecords()
     }
   },
@@ -32,26 +26,12 @@ Page({
     try {
       const openid = app.globalData.userInfo.openid
       const records = await appointmentDB.getList(openid)
-
-      // 格式化时间
-      const formatted = records.map(item => {
-        const date = item.createTime
-        let createTimeStr = ''
-        if (date) {
-          if (typeof date === 'object' && date.$date) {
-            createTimeStr = new Date(date.$date).toLocaleString('zh-CN')
-          } else {
-            createTimeStr = new Date(date).toLocaleString('zh-CN')
-          }
-        }
-        return { ...item, createTime: createTimeStr }
-      })
-
-      this.setData({ records: formatted, loading: false })
+      const formatted = records.map(item => formatRecord(item))
+      this.setData({ records: formatted, loading: false, _loaded: true })
       this.filterRecords()
     } catch (err) {
       console.error('加载预约记录失败', err)
-      this.setData({ records: [], loading: false })
+      this.setData({ records: [], loading: false, _loaded: true })
       this.filterRecords()
     }
   },
diff --git a/pages/records/records.wxml b/pages/records/records.wxml
index 6cc673b..aa4f52f 100644
--- a/pages/records/records.wxml
+++ b/pages/records/records.wxml
@@ -14,13 +14,16 @@
     <view class="tab {{currentTab === 'rejected' ? 'tab-active' : ''}}" bindtap="switchTab" data-tab="rejected">
       已拒绝
     </view>
+    <view class="tab {{currentTab === 'cancelled' ? 'tab-active' : ''}}" bindtap="switchTab" data-tab="cancelled">
+      已取消
+    </view>
   </view>
 
   <!-- 记录列表 -->
   <view class="record-list" wx:if="{{!loading && filteredRecords.length > 0}}">
     <view class="record-card" wx:for="{{filteredRecords}}" wx:key="_id">
       <view class="record-header">
-        <text class="record-id">{{item.id}}</text>
+        <text class="record-id">{{item._id}}</text>
         <view class="status-tag status-{{item.status}}">
           {{item.statusText}}
         </view>
diff --git a/utils/cloud.js b/utils/cloud.js
index b385c3e..c9ca208 100644
--- a/utils/cloud.js
+++ b/utils/cloud.js
@@ -1,7 +1,33 @@
 // 云数据库操作工具库
 
-const db = wx.cloud.database()
-const _ = db.command
+/**
+ * 延迟获取 db 实例，确保 cloud.init 已完成
+ */
+function getDb() {
+  return wx.cloud.database()
+}
+
+function getCmd() {
+  return getDb().command
+}
+
+/**
+ * 格式化云数据库时间字段
+ * @param {object} record - 含 createTime 的记录
+ * @returns {object} 格式化后的记录
+ */
+function formatRecord(record) {
+  const date = record.createTime
+  let createTimeStr = ''
+  if (date) {
+    if (typeof date === 'object' && date.$date) {
+      createTimeStr = new Date(date.$date).toLocaleString('zh-CN')
+    } else {
+      createTimeStr = new Date(date).toLocaleString('zh-CN')
+    }
+  }
+  return { ...record, createTime: createTimeStr }
+}
 
 /**
  * 用户相关操作
@@ -10,50 +36,32 @@ const userDB = {
   /**
    * 通过 openId 查找用户，不存在则创建
    * @param {string} openid
-   * @param {object} userInfo - { avatarUrl, nickName }
    * @returns {Promise<object>} 用户记录
    */
-  async loginOrCreate(openid, userInfo) {
+  async loginOrCreate(openid) {
+    const db = getDb()
     const res = await db.collection('users').where({ _openid: openid }).get()
     if (res.data.length > 0) {
-      // 已存在，更新头像昵称
       const existing = res.data[0]
       await db.collection('users').doc(existing._id).update({
         data: {
-          avatarUrl: userInfo.avatarUrl,
-          nickName: userInfo.nickName,
           lastLoginTime: db.serverDate()
         }
       })
-      return { ...existing, avatarUrl: userInfo.avatarUrl, nickName: userInfo.nickName }
+      return existing
     } else {
-      // 不存在，新建
       const addRes = await db.collection('users').add({
         data: {
           _openid: openid,
-          avatarUrl: userInfo.avatarUrl,
-          nickName: userInfo.nickName,
           createTime: db.serverDate(),
           lastLoginTime: db.serverDate()
         }
       })
       return {
         _id: addRes._id,
-        _openid: openid,
-        avatarUrl: userInfo.avatarUrl,
-        nickName: userInfo.nickName
+        _openid: openid
       }
     }
-  },
-
-  /**
-   * 根据 openId 获取用户信息
-   * @param {string} openid
-   * @returns {Promise<object|null>}
-   */
-  async getByOpenId(openid) {
-    const res = await db.collection('users').where({ _openid: openid }).get()
-    return res.data.length > 0 ? res.data[0] : null
   }
 }
 
@@ -67,6 +75,7 @@ const appointmentDB = {
    * @returns {Promise<string>} 新记录 _id
    */
   async create(data) {
+    const db = getDb()
     const res = await db.collection('appointments').add({
       data: {
         ...data,
@@ -79,16 +88,29 @@ const appointmentDB = {
   },
 
   /**
-   * 获取当前用户的预约列表（按创建时间倒序）
+   * 获取当前用户的预约列表（按创建时间倒序，自动分页取全部）
    * @param {string} openid
    * @returns {Promise<Array>}
    */
   async getList(openid) {
-    const res = await db.collection('appointments')
-      .where({ _openid: openid })
-      .orderBy('createTime', 'desc')
-      .get()
-    return res.data
+    const db = getDb()
+    const MAX_LIMIT = 100
+    let allData = []
+    let countResult = await db.collection('appointments').where({ _openid: openid }).count()
+    const total = countResult.total
+    const batchTimes = Math.ceil(total / MAX_LIMIT)
+
+    for (let i = 0; i < batchTimes; i++) {
+      const res = await db.collection('appointments')
+        .where({ _openid: openid })
+        .orderBy('createTime', 'desc')
+        .skip(i * MAX_LIMIT)
+        .limit(MAX_LIMIT)
+        .get()
+      allData = allData.concat(res.data)
+    }
+
+    return allData
   },
 
   /**
@@ -97,6 +119,7 @@ const appointmentDB = {
    * @returns {Promise<object|null>}
    */
   async getLatest(openid) {
+    const db = getDb()
     const res = await db.collection('appointments')
       .where({ _openid: openid })
       .orderBy('createTime', 'desc')
@@ -112,7 +135,7 @@ const appointmentDB = {
    * @returns {Promise<boolean>} 是否成功
    */
   async cancel(id, openid) {
-    // 先校验该预约属于当前用户
+    const db = getDb()
     const res = await db.collection('appointments').doc(id).get()
     if (res.data._openid !== openid) {
       return false
@@ -131,8 +154,9 @@ const appointmentDB = {
 }
 
 module.exports = {
-  db,
-  _,
+  getDb,
+  getCmd,
+  formatRecord,
   userDB,
   appointmentDB
 }