diff --git a/components/PaymentPopup.vue b/components/PaymentPopup.vue
index 24f0afa..179bdd2 100644
--- a/components/PaymentPopup.vue
+++ b/components/PaymentPopup.vue
@@ -21,6 +21,7 @@
         <view class="form-item">
           <text class="label">优惠券</text>
           <picker 
+            class="picker-full"
             mode="selector" 
             :range="coupons" 
             range-key="name" 
@@ -40,6 +41,7 @@
         <view class="form-item" v-if="showCards">
           <text class="label">道具卡</text>
           <picker 
+            class="picker-full"
             mode="selector" 
             :range="propCards" 
             range-key="name" 
@@ -259,6 +261,11 @@ function handleConfirm() {
   margin-bottom: $spacing-xs;
 }
 
+.picker-full {
+  width: 100%;
+  display: block;
+}
+
 .picker-display {
   border: 2rpx solid $border-color-light;
   border-radius: $radius-md;
diff --git a/pages.json b/pages.json
index 87d8fda..5d9ac23 100644
--- a/pages.json
+++ b/pages.json
@@ -48,6 +48,12 @@
 				"navigationBarTitleText": "我的订单"
 			}
 		},
+		{
+			"path": "pages/orders/detail",
+			"style": {
+				"navigationBarTitleText": "订单详情"
+			}
+		},
 		{
 			"path": "pages/address/index",
 			"style": {
diff --git a/pages/orders/detail.vue b/pages/orders/detail.vue
new file mode 100644
index 0000000..0191202
--- /dev/null
+++ b/pages/orders/detail.vue
@@ -0,0 +1,645 @@
+<template>
+  <view class="page-container">
+    <!-- 加载状态 -->
+    <view v-if="loading" class="loading-state">
+      <view class="loading-spinner"></view>
+      <text class="loading-text">加载中...</text>
+    </view>
+
+    <!-- 错误状态 -->
+    <view v-else-if="error" class="error-state">
+      <view class="error-icon">⚠️</view>
+      <text class="error-text">{{ error }}</text>
+      <button class="retry-btn" @tap="loadOrder">重试</button>
+    </view>
+
+    <!-- 订单内容 -->
+    <view v-else-if="order" class="content">
+      <!-- 状态头部背景 -->
+      <view class="status-header-bg" :class="getStatusClass(order)">
+        <view class="bg-circle c1"></view>
+        <view class="bg-circle c2"></view>
+      </view>
+
+      <!-- 状态卡片 -->
+      <view class="status-card">
+        <view class="status-content">
+          <view class="status-icon-wrap">
+            <text class="status-icon">{{ getStatusIcon(order) }}</text>
+          </view>
+          <view class="status-info">
+            <text class="status-title">{{ statusText(order) }}</text>
+            <text class="status-desc" v-if="order.status === 1">请在 15 分钟内完成支付</text>
+            <text class="status-desc" v-else-if="order.status === 3">订单已取消</text>
+            <text class="status-desc" v-else>感谢您的购买，期待再次光临</text>
+          </view>
+        </view>
+      </view>
+
+      <!-- 奖品/商品列表 -->
+      <view class="section-card product-section">
+        <view class="section-header">
+          <text class="section-title">商品清单</text>
+          <text class="item-count">共 {{ order.items ? order.items.length : 0 }} 件</text>
+        </view>
+        <view class="order-items">
+          <view v-for="(item, index) in order.items" :key="index" class="item-card">
+            <view class="item-image-wrap">
+              <image class="item-image" :src="getProductImage(item)" mode="aspectFill" />
+              <!-- 中奖标识 -->
+              <view class="winner-tag" v-if="order.is_winner && order.source_type === 2">
+                <text class="tag-text">中奖</text>
+              </view>
+              <view class="level-tag" v-if="order.reward_level">
+                <text class="tag-text">{{ order.reward_level }}赏</text>
+              </view>
+            </view>
+            
+            <view class="item-info">
+              <text class="item-title">{{ item.title || '商品' }}</text>
+              <view class="item-tags" v-if="order.activity_name">
+                <text class="tag">{{ order.activity_name }}</text>
+              </view>
+              <view class="item-meta">
+                <view class="price-wrap">
+                  <text class="currency">¥</text>
+                  <text class="price">{{ formatPrice(item.price) }}</text>
+                </view>
+                <text class="item-quantity">x{{ item.quantity }}</text>
+              </view>
+            </view>
+          </view>
+        </view>
+      </view>
+
+      <!-- 订单信息 -->
+      <view class="section-card info-section">
+        <view class="info-row">
+          <text class="label">订单编号</text>
+          <view class="value-wrap">
+            <text class="value mono">{{ order.order_no }}</text>
+            <view class="copy-btn" @tap="copyText(order.order_no)">复制</view>
+          </view>
+        </view>
+        <view class="info-row">
+          <text class="label">下单时间</text>
+          <text class="value">{{ formatTime(order.created_at) }}</text>
+        </view>
+        <view class="info-row" v-if="order.paid_at">
+          <text class="label">支付时间</text>
+          <text class="value">{{ formatTime(order.paid_at) }}</text>
+        </view>
+        <view class="info-row" v-if="order.cancelled_at">
+          <text class="label">取消时间</text>
+          <text class="value">{{ formatTime(order.cancelled_at) }}</text>
+        </view>
+        <view class="info-row">
+          <text class="label">订单来源</text>
+          <text class="value">{{ getSourceTypeText(order.source_type) }}</text>
+        </view>
+      </view>
+
+      <!-- 金额明细 -->
+      <view class="section-card amount-section">
+        <view class="info-row">
+          <text class="label">商品总额</text>
+          <text class="value">¥{{ formatPrice(order.total_amount) }}</text>
+        </view>
+        <view class="info-row" v-if="order.discount_amount">
+          <text class="label">优惠金额</text>
+          <text class="value discount">-¥{{ formatPrice(order.discount_amount) }}</text>
+        </view>
+        <view class="divider"></view>
+        <view class="total-row">
+          <text class="total-label">实付款</text>
+          <view class="total-price-wrap">
+            <text class="currency">¥</text>
+            <text class="total-price">{{ formatPrice(order.actual_amount) }}</text>
+          </view>
+        </view>
+      </view>
+    </view>
+
+    <!-- 底部操作栏 -->
+    <view class="footer-actions safe-area-bottom" v-if="order && order.status === 1">
+      <view class="action-btn secondary" @tap="handleCancel">取消订单</view>
+      <view class="action-btn primary" @tap="handlePay">立即支付</view>
+    </view>
+  </view>
+</template>
+
+<script setup>
+import { ref } from 'vue'
+import { onLoad } from '@dcloudio/uni-app'
+import { getOrderDetail, cancelOrder } from '../../api/appUser'
+
+const orderId = ref('')
+const order = ref(null)
+const loading = ref(true)
+const error = ref('')
+
+const defaultImage = 'https://keaiya-1259195914.cos.ap-shanghai.myqcloud.com/images/default-product.png'
+
+onLoad((options) => {
+  if (options.id) {
+    orderId.value = options.id
+    loadOrder()
+  } else {
+    error.value = '参数错误'
+    loading.value = false
+  }
+})
+
+async function loadOrder() {
+  loading.value = true
+  error.value = ''
+  try {
+    const res = await getOrderDetail(orderId.value)
+    order.value = res
+  } catch (e) {
+    error.value = e.message || '获取订单详情失败'
+  } finally {
+    loading.value = false
+  }
+}
+
+function handleCancel() {
+  uni.showModal({
+    title: '确认取消',
+    content: '确定要取消这个订单吗？',
+    confirmColor: '#FF6B00',
+    success: async (res) => {
+      if (res.confirm) {
+        uni.showLoading({ title: '取消中...' })
+        try {
+          await cancelOrder(orderId.value, '用户主动取消')
+          uni.hideLoading()
+          uni.showToast({ title: '订单已取消', icon: 'success' })
+          loadOrder()
+        } catch (e) {
+          uni.hideLoading()
+          uni.showToast({ title: e.message || '取消失败', icon: 'none' })
+        }
+      }
+    }
+  })
+}
+
+function handlePay() {
+  uni.showToast({ title: '支付功能开发中', icon: 'none' })
+}
+
+function copyText(text) {
+  if (!text) return
+  uni.setClipboardData({
+    data: String(text),
+    success: () => {
+      uni.showToast({ title: '已复制', icon: 'none' })
+    }
+  })
+}
+
+function formatPrice(price) {
+  if (price === undefined || price === null) return '0.00'
+  return (Number(price) / 100).toFixed(2)
+}
+
+function formatTime(t) {
+  if (!t) return ''
+  const date = new Date(t)
+  const y = date.getFullYear()
+  const m = String(date.getMonth() + 1).padStart(2, '0')
+  const d = String(date.getDate()).padStart(2, '0')
+  const hh = String(date.getHours()).padStart(2, '0')
+  const mm = String(date.getMinutes()).padStart(2, '0')
+  const ss = String(date.getSeconds()).padStart(2, '0')
+  return `${y}-${m}-${d} ${hh}:${mm}:${ss}`
+}
+
+function getProductImage(item) {
+  if (item.product_images) {
+    try {
+      const parsed = JSON.parse(item.product_images)
+      if (Array.isArray(parsed) && parsed.length > 0) {
+        return parsed[0]
+      }
+    } catch (e) {
+      if (typeof item.product_images === 'string' && item.product_images.startsWith('http')) {
+        return item.product_images
+      }
+    }
+  }
+  return defaultImage
+}
+
+function statusText(item) {
+  const status = item.status
+  if (status === 1) return '待付款'
+  if (status === 2) return '已完成'
+  if (status === 3) return '已取消'
+  return '进行中'
+}
+
+function getStatusClass(item) {
+  const status = item.status
+  if (status === 1) return 'status-pending'
+  if (status === 2) return 'status-completed'
+  if (status === 3) return 'status-cancelled'
+  return ''
+}
+
+function getStatusIcon(item) {
+  const status = item.status
+  if (status === 1) return '🕒'
+  if (status === 2) return '🎉'
+  if (status === 3) return '🚫'
+  return '📦'
+}
+
+function getSourceTypeText(type) {
+  if (type === 1) return '商城订单'
+  if (type === 2) return '一番赏'
+  if (type === 3) return '发奖记录'
+  return '其他'
+}
+</script>
+
+<style lang="scss" scoped>
+.page-container {
+  min-height: 100vh;
+  background: $bg-page;
+  padding-bottom: calc(140rpx + env(safe-area-inset-bottom));
+  position: relative;
+}
+
+/* 状态头部背景 */
+.status-header-bg {
+  height: 360rpx;
+  position: relative;
+  overflow: hidden;
+  border-radius: 0 0 40rpx 40rpx;
+  
+  &.status-pending { background: linear-gradient(135deg, #FF9F43 0%, #FF6B6B 100%); }
+  &.status-completed { background: linear-gradient(135deg, #2ECC71 0%, #27AE60 100%); }
+  &.status-cancelled { background: linear-gradient(135deg, #95A5A6 0%, #7F8C8D 100%); }
+  
+  .bg-circle {
+    position: absolute;
+    border-radius: 50%;
+    background: rgba(255, 255, 255, 0.1);
+    
+    &.c1 { width: 300rpx; height: 300rpx; top: -100rpx; right: -50rpx; }
+    &.c2 { width: 200rpx; height: 200rpx; bottom: 50rpx; left: -50rpx; }
+  }
+}
+
+/* 状态卡片 */
+.status-card {
+  margin: -160rpx $spacing-lg 0;
+  background: rgba(255, 255, 255, 0.95);
+  backdrop-filter: blur(10px);
+  border-radius: $radius-xl;
+  padding: $spacing-xl;
+  box-shadow: $shadow-card;
+  position: relative;
+  z-index: 10;
+  
+  .status-content {
+    display: flex;
+    align-items: center;
+    gap: $spacing-lg;
+  }
+  
+  .status-icon-wrap {
+    width: 88rpx;
+    height: 88rpx;
+    background: $bg-secondary;
+    border-radius: 50%;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+  }
+  
+  .status-icon {
+    font-size: 44rpx;
+  }
+  
+  .status-info {
+    flex: 1;
+    display: flex;
+    flex-direction: column;
+    gap: 4rpx;
+  }
+  
+  .status-title {
+    font-size: 36rpx;
+    font-weight: 800;
+    color: $text-main;
+  }
+  
+  .status-desc {
+    font-size: $font-sm;
+    color: $text-sub;
+  }
+}
+
+/* 通用卡片样式 */
+.section-card {
+  margin: $spacing-lg;
+  background: $bg-card;
+  border-radius: $radius-lg;
+  padding: $spacing-lg;
+  box-shadow: $shadow-sm;
+  animation: slideUp 0.4s ease-out;
+}
+
+@keyframes slideUp {
+  from { opacity: 0; transform: translateY(20rpx); }
+  to { opacity: 1; transform: translateY(0); }
+}
+
+.section-header {
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+  margin-bottom: $spacing-lg;
+  padding-bottom: $spacing-sm;
+  border-bottom: 2rpx dashed $border-color-light;
+}
+
+.section-title {
+  font-size: 30rpx;
+  font-weight: 700;
+  color: $text-main;
+  position: relative;
+  padding-left: 20rpx;
+  
+  &::before {
+    content: '';
+    position: absolute;
+    left: 0;
+    top: 50%;
+    transform: translateY(-50%);
+    width: 6rpx;
+    height: 24rpx;
+    background: $brand-primary;
+    border-radius: 4rpx;
+  }
+}
+
+.item-count {
+  font-size: $font-sm;
+  color: $text-sub;
+}
+
+/* 商品列表 */
+.item-card {
+  display: flex;
+  gap: $spacing-md;
+  margin-bottom: $spacing-lg;
+  
+  &:last-child { margin-bottom: 0; }
+}
+
+.item-image-wrap {
+  position: relative;
+  width: 160rpx;
+  height: 160rpx;
+  border-radius: $radius-md;
+  overflow: hidden;
+  background: $bg-secondary;
+}
+
+.item-image {
+  width: 100%;
+  height: 100%;
+}
+
+.winner-tag {
+  position: absolute;
+  top: 0;
+  left: 0;
+  background: $gradient-gold;
+  padding: 4rpx 12rpx;
+  border-radius: 0 0 $radius-md 0;
+  z-index: 1;
+  
+  .tag-text {
+    color: #fff;
+    font-size: 18rpx;
+    font-weight: 700;
+  }
+}
+
+.level-tag {
+  position: absolute;
+  bottom: 0;
+  right: 0;
+  background: rgba(0, 0, 0, 0.6);
+  padding: 2rpx 10rpx;
+  border-radius: $radius-sm 0 0 0;
+  
+  .tag-text {
+    color: #fff;
+    font-size: 18rpx;
+    font-weight: 600;
+  }
+}
+
+.item-info {
+  flex: 1;
+  display: flex;
+  flex-direction: column;
+  justify-content: space-between;
+  padding: 4rpx 0;
+}
+
+.item-title {
+  font-size: 28rpx;
+  color: $text-main;
+  font-weight: 600;
+  line-height: 1.4;
+  @include text-ellipsis(2);
+}
+
+.item-tags {
+  margin-top: 8rpx;
+  display: flex;
+  
+  .tag {
+    font-size: 20rpx;
+    color: $brand-primary;
+    background: rgba($brand-primary, 0.08);
+    padding: 2rpx 10rpx;
+    border-radius: 6rpx;
+  }
+}
+
+.item-meta {
+  display: flex;
+  justify-content: space-between;
+  align-items: flex-end;
+  margin-top: auto;
+}
+
+.price-wrap {
+  display: flex;
+  align-items: baseline;
+  color: $text-main;
+  
+  .currency { font-size: 24rpx; font-weight: 600; }
+  .price { font-size: 32rpx; font-weight: 700; font-family: 'DIN Alternate', sans-serif; }
+}
+
+.item-quantity {
+  font-size: 24rpx;
+  color: $text-sub;
+}
+
+/* 信息行 */
+.info-row {
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+  padding: 12rpx 0;
+  
+  .label {
+    font-size: 26rpx;
+    color: $text-sub;
+  }
+  
+  .value {
+    font-size: 26rpx;
+    color: $text-main;
+    
+    &.mono { font-family: monospace; }
+    &.discount { color: $uni-color-error; font-weight: 600; }
+  }
+  
+  .value-wrap {
+    display: flex;
+    align-items: center;
+    gap: 12rpx;
+  }
+  
+  .copy-btn {
+    font-size: 20rpx;
+    color: $text-sub;
+    border: 1rpx solid $border-color;
+    padding: 2rpx 12rpx;
+    border-radius: 20rpx;
+    
+    &:active {
+      opacity: 0.6;
+      background: $bg-secondary;
+    }
+  }
+}
+
+.divider {
+  height: 1rpx;
+  background: $border-color-light;
+  margin: 20rpx 0;
+}
+
+.total-row {
+  display: flex;
+  justify-content: flex-end;
+  align-items: center;
+  gap: 16rpx;
+  padding-top: 10rpx;
+  
+  .total-label {
+    font-size: 28rpx;
+    font-weight: 600;
+    color: $text-main;
+  }
+  
+  .total-price-wrap {
+    color: $brand-primary;
+    display: flex;
+    align-items: baseline;
+    
+    .currency { font-size: 28rpx; font-weight: 600; }
+    .total-price { font-size: 40rpx; font-weight: 800; font-family: 'DIN Alternate', sans-serif; }
+  }
+}
+
+/* 底部操作栏 */
+.footer-actions {
+  position: fixed;
+  bottom: 0;
+  left: 0;
+  right: 0;
+  background: rgba(255, 255, 255, 0.95);
+  backdrop-filter: blur(20rpx);
+  padding: 24rpx 32rpx;
+  padding-bottom: calc(24rpx + env(safe-area-inset-bottom));
+  display: flex;
+  justify-content: flex-end;
+  gap: 24rpx;
+  box-shadow: 0 -4rpx 24rpx rgba(0, 0, 0, 0.06);
+  z-index: 100;
+}
+
+.action-btn {
+  height: 80rpx;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  padding: 0 48rpx;
+  border-radius: 40rpx;
+  font-size: 28rpx;
+  font-weight: 600;
+  transition: all 0.2s;
+  
+  &:active { transform: scale(0.96); }
+  
+  &.secondary {
+    background: #fff;
+    color: $text-main;
+    border: 2rpx solid $border-color;
+  }
+  
+  &.primary {
+    background: $gradient-brand;
+    color: #fff;
+    box-shadow: $shadow-warm;
+  }
+}
+
+/* Loading & Error */
+.loading-state, .error-state {
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  justify-content: center;
+  height: 80vh;
+  
+  .loading-text, .error-text {
+    margin-top: 24rpx;
+    color: $text-sub;
+    font-size: 28rpx;
+  }
+}
+
+.loading-spinner {
+  width: 64rpx;
+  height: 64rpx;
+  border: 6rpx solid rgba($brand-primary, 0.2);
+  border-top-color: $brand-primary;
+  border-radius: 50%;
+  animation: spin 0.8s linear infinite;
+}
+
+@keyframes spin { to { transform: rotate(360deg); } }
+
+.retry-btn {
+  margin-top: 32rpx;
+  background: $brand-primary;
+  color: #fff;
+  font-size: 28rpx;
+  padding: 12rpx 48rpx;
+  border-radius: 32rpx;
+}
+</style>
diff --git a/pages/orders/index.vue b/pages/orders/index.vue
index c1c2f48..ce20baa 100644
--- a/pages/orders/index.vue
+++ b/pages/orders/index.vue
@@ -247,7 +247,8 @@ function switchTab(tab) {
 }
 
 function apiStatus() {
-  return currentTab.value === 'pending' ? 'pending' : 'completed'
+  // 1: 待付款, 2: 已完成
+  return currentTab.value === 'pending' ? 1 : 2
 }
 
 // 过滤掉 source_type=3 的发奖订单
diff --git a/说明文档.md b/说明文档.md
index 5416049..ca8712b 100644
--- a/说明文档.md
+++ b/说明文档.md
@@ -31,5 +31,7 @@
 *   [x] 2025-12-17: 修复 `pages/login/index.vue` 等多处 `$border-color` 未定义错误，在 `uni.scss` 中增加变量别名。
 *   [x] 2025-12-17: 修复 `pages/mine/index.vue` 编译错误，在 `api/appUser.js` 中补充 `getUserInfo`, `getUserTasks`, `getInviteRecords` 导出。
 *   [x] 2025-12-17: 将 dev 分支代码强制推送至 main 分支 (Deployment/Sync)。
+*   [x] 2025-12-18: 实现订单详情 API 与取消订单 API (后端接口对接)。
+*   [x] 2025-12-18: 开发订单详情页 UI 及交互逻辑。
 *   [ ] 2025-12-17: 进行中 - 优化 `pages/activity/yifanshang/index.vue` 及相关组件。
 *   [ ] 2025-12-17: 待开始 - 优化 `pages/login/index.vue` 视觉细节。