diff --git a/apps/miniprogram/src/pages/pkg-mall/product/index.scss b/apps/miniprogram/src/pages/pkg-mall/product/index.scss
index 369da76..f92fee7 100644
--- a/apps/miniprogram/src/pages/pkg-mall/product/index.scss
+++ b/apps/miniprogram/src/pages/pkg-mall/product/index.scss
@@ -5,9 +5,6 @@
 
 .product-detail {
   background: $bg;
-  display: flex;
-  flex-direction: column;
-  height: 100%;
 
   &__loading, &__empty {
     @include flex-center;
@@ -32,9 +29,7 @@
   }
 
   &__scroll {
-    flex: 1;
-    overflow-y: auto;
-    -webkit-overflow-scrolling: touch;
+    padding-bottom: calc(70px + env(safe-area-inset-bottom));
   }
 
   // 商品大图
@@ -171,9 +166,12 @@
     line-height: 1.6;
   }
 
-  // 底部操作栏
+  // 底部操作栏 — fixed 固定在视口底部
   &__footer {
-    flex-shrink: 0;
+    position: fixed;
+    bottom: 0;
+    left: 0;
+    right: 0;
     background: $card;
     border-top: 1px solid $bd;
     padding: $sp-sm $sp-section;