fix code

miniprogram/pages/upload/upload.ts

@@ -887,7 +887,7 @@ Page({
       const sel = records.find(r => r.key === selectedKey);
       const partsForTitle = selectedKey.split('-');
       const monthTitle = sel ? `${sel.year}-${String(sel.month).padStart(2,'0')}` : `${partsForTitle[0]}-${partsForTitle[1]}`;
-      const useWaterfall = selectedImages.length > 3;
+      const useWaterfall = selectedImages.length > 2;
       let waterfallLeft: any[] = [], waterfallRight: any[] = [];
       if (useWaterfall) {
         selectedImages.forEach((img, idx) => {

miniprogram/pages/upload/upload.wxss

@@ -381,7 +381,6 @@
   justify-content: center; 
   width: 120rpx; 
   height: 100rpx; 
-  margin: 0 6rpx;
   border-radius: 24rpx; 
   background: #ffffff; 
   color: #001858;