feat: 输入框区域悬浮效果

src/pages/ChatMain/ChatMainList/index.vue

@@ -138,7 +138,7 @@
     </scroll-view>
 
     <!-- 输入框区域 -->
-    <view class="pb-[20px]">
+    <view class="mb-[24px] mt-[8px] mx-[12px] pt-[4px] pb-[8px] shrink-0 rounded-[16px] shadow-[0_0_6px_0_rgba(0,0,0,0.05)]">
       <ChatQuickAccess />
       <ChatInputArea ref="inputAreaRef" v-model="inputMessage" :holdKeyboard="holdKeyboard"
         :is-session-active="isSessionActive" :stop-request="stopRequest" @send="sendMessageAction"