style: 移除所有组件的backdrop-blur和半透明背景效果

统一调整多处UI元素的样式，去掉不必要的backdrop-blur滤镜以及bg的透明度后缀，让界面视觉风格更简洁统一

src/App.vue

@@ -15,7 +15,7 @@
       ></div>
 
       <aside
-        class="fixed top-10 bottom-0 left-0 z-50 w-64 shrink-0 transform border-r border-slate-200/70 bg-white/95 px-4 py-6 backdrop-blur transition-transform duration-300 ease-in-out dark:border-slate-800/70 dark:bg-slate-900 lg:sticky lg:top-10 lg:flex lg:h-[calc(100vh-2.5rem)] lg:translate-x-0 lg:flex-col lg:border-b-0"
+        class="fixed top-10 bottom-0 left-0 z-50 w-64 shrink-0 transform border-r border-slate-200/70 bg-white px-4 py-6 transition-transform duration-300 ease-in-out dark:border-slate-800/70 dark:bg-slate-900 lg:sticky lg:top-10 lg:flex lg:h-[calc(100vh-2.5rem)] lg:translate-x-0 lg:flex-col lg:border-b-0"
         :class="
           isSidebarOpen ? 'translate-x-0' : '-translate-x-full lg:translate-x-0'
         "
@@ -47,7 +47,7 @@
 
       <main class="h-full min-h-0 flex-1">
         <div
-          class="sticky top-10 z-30 border-b border-slate-200/70 bg-slate-50/95 px-4 py-4 backdrop-blur lg:px-10 dark:border-slate-800/70 dark:bg-slate-950/95"
+          class="sticky top-10 z-30 border-b border-slate-200/70 bg-slate-50 px-4 py-4 lg:px-10 dark:border-slate-800/70 dark:bg-slate-950"
         >
           <AppHeader
             :search-query="searchQuery"

src/components/AppDetailModal.vue

@@ -26,7 +26,7 @@
           >
             <button
               type="button"
-              class="inline-flex items-center gap-2 rounded-full border border-slate-200/70 bg-white/90 px-4 py-2 text-sm font-medium text-slate-600 shadow-lg backdrop-blur-sm transition hover:bg-slate-50 hover:text-slate-900 dark:border-slate-700 dark:bg-slate-800/90 dark:text-slate-400 dark:hover:bg-slate-700 dark:hover:text-slate-200"
+              class="inline-flex items-center gap-2 rounded-full border border-slate-200/70 bg-white px-4 py-2 text-sm font-medium text-slate-600 shadow-lg transition hover:bg-slate-50 hover:text-slate-900 dark:border-slate-700 dark:bg-slate-800 dark:text-slate-400 dark:hover:bg-slate-700 dark:hover:text-slate-200"
               @click="closeModal"
               aria-label="返回"
             >

src/components/AppHeader.vue

@@ -3,7 +3,7 @@
     <div class="flex flex-col gap-4 lg:flex-row lg:items-center">
       <button
         type="button"
-        class="inline-flex h-10 w-10 shrink-0 items-center justify-center rounded-2xl border border-slate-200/70 bg-white/80 text-slate-500 shadow-sm backdrop-blur transition hover:bg-slate-50 lg:hidden dark:border-slate-800/70 dark:bg-slate-900/60 dark:text-slate-400 dark:hover:bg-slate-800"
+        class="inline-flex h-10 w-10 shrink-0 items-center justify-center rounded-2xl border border-slate-200/70 bg-white text-slate-500 shadow-sm transition hover:bg-slate-50 lg:hidden dark:border-slate-800/70 dark:bg-slate-900 dark:text-slate-400 dark:hover:bg-slate-800"
         @click="$emit('toggle-sidebar')"
         title="切换侧边栏"
       >
@@ -35,7 +35,7 @@
         </div>
         <button
           type="button"
-          class="inline-flex h-10 w-10 shrink-0 items-center justify-center rounded-2xl border border-slate-200/70 bg-white/80 text-slate-500 shadow-sm backdrop-blur transition hover:bg-slate-50 dark:border-slate-800/70 dark:bg-slate-900/60 dark:text-slate-400 dark:hover:bg-slate-800"
+          class="inline-flex h-10 w-10 shrink-0 items-center justify-center rounded-2xl border border-slate-200/70 bg-white text-slate-500 shadow-sm transition hover:bg-slate-50 dark:border-slate-800/70 dark:bg-slate-900 dark:text-slate-400 dark:hover:bg-slate-800"
           @click="$emit('open-install-settings')"
           title="安装设置"
         >
@@ -43,7 +43,7 @@
         </button>
         <button
           type="button"
-          class="inline-flex h-10 w-10 shrink-0 items-center justify-center rounded-2xl border border-slate-200/70 bg-white/80 text-slate-500 shadow-sm backdrop-blur transition hover:bg-slate-50 dark:border-slate-800/70 dark:bg-slate-900/60 dark:text-slate-400 dark:hover:bg-slate-800"
+          class="inline-flex h-10 w-10 shrink-0 items-center justify-center rounded-2xl border border-slate-200/70 bg-white text-slate-500 shadow-sm transition hover:bg-slate-50 dark:border-slate-800/70 dark:bg-slate-900 dark:text-slate-400 dark:hover:bg-slate-800"
           @click="$emit('open-about')"
           title="关于"
         >

src/components/DownloadQueue.vue

@@ -1,6 +1,6 @@
 <template>
   <div
-    class="fixed inset-x-4 bottom-4 z-40 rounded-3xl border border-slate-200/70 bg-white/95 shadow-2xl backdrop-blur dark:border-slate-800/70 dark:bg-slate-900/90 sm:left-auto sm:right-6 sm:w-96"
+    class="fixed inset-x-4 bottom-4 z-40 rounded-3xl border border-slate-200/70 bg-white shadow-2xl dark:border-slate-800/70 dark:bg-slate-900 sm:left-auto sm:right-6 sm:w-96"
   >
     <div
       class="flex items-center justify-between px-5 py-4"

src/components/SubmitterWindow.vue

@@ -3,7 +3,7 @@
     class="min-h-screen overflow-y-auto bg-slate-50 dark:bg-slate-950 text-slate-900 dark:text-slate-100"
   >
     <div
-      class="sticky top-0 z-30 border-b border-slate-200/70 bg-white/95 px-4 py-3 backdrop-blur dark:border-slate-800/70 dark:bg-slate-900/95"
+      class="sticky top-0 z-30 border-b border-slate-200/70 bg-white px-4 py-3 dark:border-slate-800/70 dark:bg-slate-900"
     >
       <div class="flex items-center justify-between">
         <div class="flex items-center gap-3">

src/components/WindowTitleBar.vue

@@ -1,6 +1,6 @@
 <template>
   <header
-    class="window-titlebar sticky top-0 z-20 flex h-10 shrink-0 items-center justify-between border-b border-slate-200/70 bg-white/95 px-3 text-slate-700 backdrop-blur dark:border-slate-800/70 dark:bg-slate-950/95 dark:text-slate-200"
+    class="window-titlebar sticky top-0 z-20 flex h-10 shrink-0 items-center justify-between border-b border-slate-200/70 bg-white px-3 text-slate-700 dark:border-slate-800/70 dark:bg-slate-950 dark:text-slate-200"
   >
     <div class="flex min-w-0 items-center gap-2">
       <span class="h-3 w-3 rounded-full bg-[#2b7fff]"></span>