feat: 优化调整返回按钮样式

src/pages/Discovery/index.vue

@@ -5,10 +5,14 @@
       class="z-[12] flex w-full shrink-0 flex-row items-center bg-[#F0F8F3]"
     >
       <view
-        class="ml-[12px] mr-[8px] flex h-[32px] w-[32px] shrink-0 items-center justify-center rounded-full border border-white/20 bg-[rgba(0,0,0,0.3)]"
+        class="ml-[12px] mr-[8px] p-[4px] flex h-[36px] w-[36px] shrink-0 items-center justify-center rounded-full border border-white/70"
         @click="handleMainPanoramaClick"
       >
-        <uni-icons type="arrow-left" size="18" color="#FFFFFF" />
+        <image
+          class="h-full w-full"
+          src="https://one-feel-config-images-bucket.oss-cn-chengdu.aliyuncs.com/xiaoqi/back_home.png"
+          mode="aspectFit"
+        />
       </view>
       <view v-if="discoveryTabs.length > 0" class="min-w-0 flex-1 overflow-hidden">
         <FindTabs v-model="activeIndex" :tabs="discoveryTabs" @change="handleTabChange" />