删除搜索按钮，改为回车触发搜索

pages/buyer/index.wxml

@@ -2,19 +2,14 @@
 
 <!-- 搜索框 -->
 <view style="position: fixed; top: 0; left: 0; right: 0; padding: 20rpx; background-color: white; z-index: 100; box-shadow: 0 2rpx 10rpx rgba(0,0,0,0.1); box-sizing: border-box;">
-  <view style="width: 90%; display: flex; border: 1rpx solid #ddd; border-radius: 40rpx; overflow: hidden;">
+  <view style="width: 90%; display: flex; border: 1rpx solid #ddd; border-radius: 40rpx; overflow: hidden; margin: 0 auto;">
     <input 
-      style="flex: 1; padding: 20rpx 30rpx;" 
+      style="width: 100%; padding: 20rpx 30rpx;"
       placeholder="搜索商品名称或品种" 
       bindinput="onSearchInput" 
+      bindconfirm="searchGoods"
       value="{{searchKeyword}}"
     />
-    <button 
-      style="background-color: #1677ff; color: white; font-size: 26rpx; height: 80rpx; line-height: 80rpx; padding: 0 30rpx;"
-      bindtap="searchGoods"
-    >
-      搜索
-    </button>
   </view>
 </view>
 

pages/seller/index.wxml

@@ -27,14 +27,10 @@
         class="search-input"
         placeholder="搜索货源名称或品种" 
         bindinput="onSearchInput" 
+        bindconfirm="searchSupplies"
         value="{{searchKeyword}}"
+        style="width: 100%;"
       />
-      <button 
-        class="search-btn"
-        bindtap="searchSupplies"
-      >
-        搜索
-      </button>
     </view>
   </view>