feat: 更新通知组件背景色，使用变量替代硬编码颜色，提升样式一致性

src/views/riwa/index.vue

@@ -3,20 +3,6 @@ import IconParkOutlineApplicationMenu from "~icons/icon-park-outline/application
 import IconParkOutlineScanCode from "~icons/icon-park-outline/scan-code";
 import News from "./components/news.vue";
 import Rwa from "./components/rwa.vue";
-
-const { open } = useQRScanner();
-
-async function handleScan() {
-  const result = await open({
-    title: "扫描二维码",
-  });
-
-  if (result) {
-    console.log("扫描结果:", result);
-    // TODO: 根据扫描结果进行相应处理
-    // 例如：跳转到对应页面、显示信息等
-  }
-}
 </script>
 
 <template>
@@ -30,9 +16,6 @@ async function handleScan() {
       </ion-toolbar>
     </ion-header>
     <ion-content :fullscreen="true" class="ion-padding">
-      <ion-button fill="clear" @click="handleScan">
-        <IconParkOutlineScanCode slot="icon-only" />
-      </ion-button>
       <!-- <pwa-install-button class="mb-4" /> -->
       <Rwa />
       <News />