feat(ui): redesign all miniprogram pages

- 全局样式改为粉色(#E6508C)/金色(#DCB982)/绿色(#52c41a)配色
- 所有非tab页使用自定义导航栏，带彩色头部+标题+副标题
- login页: 粉色头部+🌸图标+微信授权登录
- scan页: 粉色头部+虚线扫码框+手动输入按钮
- ble-connect页: 蓝牙提示+搜索中/已发现设备卡片
- bind-success页: 绿色头部+成功图标+7天试用提示卡
- wear-check页: 设备信息行+佩戴指引卡片
- index首页: 粉色设备卡片+开始护理/设备管理按钮
- treatment-setup页: 模式选择+面部地图选区域
- auto-scan页: 面部轮廓+扫描线动画+检测标签
- treating页: 蓝色头部+大倒计时+渐变进度条+放松提示
- treatment-done页: 绿色头部+统计卡片+已记录提示
- subscribe-prompt页: 普通/智能模式对比+试用提示+金色订阅按钮
- subscribe-plans页: 金色头部+服务卡片+月卡/年卡选择
- subscribe-success页: 绿色头部+订阅详情卡+金色按钮
- profile页: 渐变头部+用户行+订阅卡+菜单列表
- history页: 粉色统计行+模式标签记录列表

miniprogram/pages/auto-scan/auto-scan.wxss

@@ -1,8 +1,79 @@
-.scan-result-item {
-  padding: 16rpx 0;
-  border-bottom: 1rpx solid #f0f0f0;
+.scan-container {
+  position: relative;
+  width: 320rpx;
+  height: 400rpx;
+  margin: 40rpx auto;
 }
 
-.scan-result-item:last-child {
-  border-bottom: none;
+.face-outline {
+  width: 100%;
+  height: 100%;
+  border: 6rpx solid #e5e5e5;
+  border-radius: 50% 50% 45% 45%;
+  position: relative;
+  overflow: hidden;
+}
+
+.scan-line {
+  position: absolute;
+  left: 10rpx;
+  right: 10rpx;
+  height: 6rpx;
+  background: linear-gradient(90deg, transparent, #E6508C, #DCB982, #E6508C, transparent);
+  animation: scan 2s ease-in-out infinite;
+}
+
+@keyframes scan {
+  0% { top: 0; opacity: 0.5; }
+  50% { opacity: 1; }
+  100% { top: calc(100% - 6rpx); opacity: 0.5; }
+}
+
+.scan-hint {
+  text-align: center;
+  font-size: 26rpx;
+  color: #666666;
+  margin-bottom: 24rpx;
+}
+
+.scan-progress {
+  text-align: center;
+  background: #f0f9ff;
+  padding: 16rpx 28rpx;
+  border-radius: 24rpx;
+  font-size: 26rpx;
+  color: #006699;
+  display: inline-block;
+  margin: 0 auto;
+}
+
+.highlight {
+  color: #E6508C;
+  font-weight: 600;
+}
+
+.detected-tags {
+  text-align: center;
+  margin-top: 24rpx;
+}
+
+.detected-tag {
+  background: #fdf2f8;
+  border: 2rpx solid #E6508C;
+  color: #E6508C;
+  padding: 10rpx 24rpx;
+  border-radius: 24rpx;
+  font-size: 24rpx;
+  display: inline-block;
+  margin: 6rpx;
+  animation: tagPulse 1s ease-in-out;
+}
+
+@keyframes tagPulse {
+  0%, 100% { transform: scale(1); }
+  50% { transform: scale(1.05); }
+}
+
+.btn-primary::after {
+  border: none;
 }