fix scrollbar

src/App.vue

@@ -1,6 +1,5 @@
 <template>
   <div class="app-container">
-    <!-- 启动屏专属过渡 -->
     <transition name="layout-fade">
       <SplashScreen v-if="!store.isInitialized" :status-text="store.initStatus" />
     </transition>
@@ -9,7 +8,6 @@
       <Sidebar />
       <div class="main-content">
         <router-view v-slot="{ Component }">
-          <!-- 页面切换专属过渡：极简、快速 -->
           <transition name="page-fade" mode="out-in">
             <component :is="Component" />
           </transition>
@@ -72,11 +70,13 @@ body {
 .main-content {
   flex: 1;
   height: 100vh;
-  overflow-y: auto;
+  display: flex; /* 让子元素（页面）能撑满高度 */
+  flex-direction: column;
+  overflow: hidden; /* 禁用全局容器滚动 */
   position: relative;
 }
 
-/* 1. 布局级别过渡 (Splash -> App): 优雅、大气 */
+/* 1. 布局级别过渡 (Splash -> App) */
 .layout-fade-enter-active,
 .layout-fade-leave-active {
   transition: opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1), transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
@@ -87,7 +87,7 @@ body {
   transform: scale(1.05);
 }
 
-/* 2. 页面级别过渡 (Essentials <-> Updates): 快速、响应灵敏 */
+/* 2. 页面级别过渡 */
 .page-fade-enter-active,
 .page-fade-leave-active {
   transition: opacity 0.15s ease;