bug:

src/components/sp-page/header.js

@@ -205,12 +205,14 @@ const CustomNavigationHeader = memo((props) => {
     <View className='wgt-page' style={styleNames(headerStyle())} onClick={props.onClickHeader}>
       <View className='wgt-page-content'>
         <View
-          className={classNames('header-container', { 'has-nearby': hasNearby })}
+          className={classNames('header-container', { 'has-nearby': hasNearby, 'is-web': isWeb })}
           style={styleNames({ width: `calc(100% - ${navigationRSpace}px)`,...(showHeaderContent ? containerStyle() : {})})}
         >
-          {showNavitionLeft && <View className={
-            classNames('header-container-left', { 'is-web': isWeb })
-          } style={styleNames({ width:`${navigationRSpace}px` })}>
+          {showNavitionLeft && (
+          <View
+            className={classNames('header-container-left', { 'is-web': isWeb })}
+            style={styleNames({ width: `${navigationRSpace}px` })}
+          >
             {/* 左侧：返回、首页、功能区三者只显示一个 */}
             {showHeaderContent && showFunctionArea ? (
               <>
@@ -232,7 +234,8 @@ const CustomNavigationHeader = memo((props) => {
                 )}
               </>
             )}
-          </View>}
+          </View>
+          )}
           <View className='title-container' style={styleNames({ paddingLeft: !showNavitionLeft ? `20rpx` : `0` })}>
             {/* 标题区：搜索 */}
             {showHeaderContent && titleStyle === '3' && renderSearch()}

src/components/sp-page/index.scss

@@ -154,6 +154,20 @@
       box-sizing: border-box;
       justify-content: flex-start;
 
+      /* Web 端：标题区保持 flex 布局，仅保证居中不撑满；左侧占位用 min-width 避免标题偏右 */
+      &.is-web .header-container-left {
+        min-width: 80px; /* 与左侧返回/首页按钮区域对称，标题视觉居中 */
+      }
+      &.is-web .title-container {
+        padding-left: 0;
+      }
+      &.is-web .title-search {
+        flex: 1;
+        min-width: 0;
+        max-width: 600px;
+        margin: 0 auto;
+      }
+
       .nav-left-capsule {
         flex-shrink: 0;
       }