diff --git a/.idea/deploymentTargetSelector.xml b/.idea/deploymentTargetSelector.xml
index b268ef3..849be02 100644
--- a/.idea/deploymentTargetSelector.xml
+++ b/.idea/deploymentTargetSelector.xml
@@ -2,7 +2,7 @@
 <project version="4">
   <component name="deploymentTargetSelector">
     <selectionStates>
-      <SelectionState runConfigName="app">
+      <SelectionState runConfigName="Unnamed">
         <option name="selectionMode" value="DROPDOWN" />
       </SelectionState>
     </selectionStates>
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index 01e6f98..789f807 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -1,5 +1,12 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android">
 
+
+    <!-- 允许应用访问互联网 -->
+    <uses-permission android:name="android.permission.INTERNET" />
+    <uses-permission android:name="android.permission.READ_MEDIA_IMAGES"/>
+    <uses-permission android:name="android.permission.READ_MEDIA_VIDEO"/>
+    <uses-permission android:name="android.permission.READ_MEDIA_AUDIO"/>
+
     <!-- 添加 namespace -->
     <application
         android:allowBackup="true"
@@ -18,9 +25,4 @@
         </activity>
     </application>
 
-    <!-- 允许应用访问互联网 -->
-    <uses-permission android:name="android.permission.INTERNET" />
-    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
-    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
-
 </manifest>
diff --git a/app/src/main/java/com/example/lobchat/MainActivity.kt b/app/src/main/java/com/example/lobchat/MainActivity.kt
index cf47975..2909d9a 100644
--- a/app/src/main/java/com/example/lobchat/MainActivity.kt
+++ b/app/src/main/java/com/example/lobchat/MainActivity.kt
@@ -18,23 +18,24 @@ import android.view.View
 import androidx.appcompat.app.AlertDialog
 import android.util.Log
 import android.provider.Settings
-
+import androidx.constraintlayout.widget.ConstraintLayout
 
 class MainActivity : AppCompatActivity() {
 
     private lateinit var webView: WebView
-    private var filePathCallback: ValueCallback<Array<Uri>>? = null
-    private lateinit var fileChooserLauncher: ActivityResultLauncher<Intent>
-
+    private lateinit var urlInputLayout: ConstraintLayout
     private lateinit var urlInput: EditText
     private lateinit var loadUrlButton: Button
+    private var filePathCallback: ValueCallback<Array<Uri>>? = null
+    private lateinit var fileChooserLauncher: ActivityResultLauncher<Intent>
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         setContentView(R.layout.activity_main)
 
         // 初始化视图组件
-        webView = findViewById(R.id.webview)
+        webView = findViewById(R.id.webView)
+        urlInputLayout = findViewById(R.id.urlInputLayout)
         urlInput = findViewById(R.id.urlInput)
         loadUrlButton = findViewById(R.id.loadUrlButton)
 
@@ -80,9 +81,6 @@ class MainActivity : AppCompatActivity() {
                     });
                     """.trimIndent(), null
                 )
-                // 隐藏输入框和按钮
-                urlInput.visibility = View.GONE
-                loadUrlButton.visibility = View.GONE
             }
         }
 
@@ -122,6 +120,10 @@ class MainActivity : AppCompatActivity() {
 
                 // 加载用户输入的 URL
                 webView.loadUrl(url)
+
+                // 切换视图：隐藏 URL 输入部分并显示 WebView
+                urlInputLayout.visibility = View.GONE
+                webView.visibility = View.VISIBLE
             } else {
                 Toast.makeText(this, "Please enter a valid URL", Toast.LENGTH_SHORT).show()
             }
diff --git a/app/src/main/res/drawable/button_rounded_background.xml b/app/src/main/res/drawable/button_rounded_background.xml
new file mode 100644
index 0000000..258a3c8
--- /dev/null
+++ b/app/src/main/res/drawable/button_rounded_background.xml
@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android">
+    <solid android:color="@color/black"/> <!-- 按钮的背景颜色，可以更改为你喜欢的颜色 -->
+    <corners android:radius="12dp"/> <!-- 设置圆角半径，12dp 可以根据需要进行调整 -->
+    <stroke
+        android:width="1dp"
+        android:color="@color/grey_light"/> <!-- 按钮的边框颜色，可以修改 -->
+    <padding
+        android:left="12dp"
+        android:top="8dp"
+        android:right="12dp"
+        android:bottom="8dp"/> <!-- 设置按钮的内边距 -->
+</shape>
diff --git a/app/src/main/res/drawable/ic_logo.png b/app/src/main/res/drawable/ic_logo.png
new file mode 100644
index 0000000..cc29879
Binary files /dev/null and b/app/src/main/res/drawable/ic_logo.png differ
diff --git a/app/src/main/res/drawable/search_box_background.xml b/app/src/main/res/drawable/search_box_background.xml
new file mode 100644
index 0000000..bfb212c
--- /dev/null
+++ b/app/src/main/res/drawable/search_box_background.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+    <shape xmlns:android="http://schemas.android.com/apk/res/android">
+        <solid android:color="@color/grey_light"/>
+        <corners android:radius="12dp"/>
+        <stroke android:width="1dp" android:color="@color/black"/>
+    </shape>
\ No newline at end of file
diff --git a/app/src/main/res/layout/activity_main.xml b/app/src/main/res/layout/activity_main.xml
index 5d87042..f15ceae 100644
--- a/app/src/main/res/layout/activity_main.xml
+++ b/app/src/main/res/layout/activity_main.xml
@@ -1,29 +1,67 @@
-<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<?xml version="1.0" encoding="utf-8"?>
+<FrameLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
-    android:layout_height="match_parent">
+    android:layout_height="match_parent"
+    tools:context=".MainActivity">
 
-    <EditText
-        android:id="@+id/urlInput"
+    <!-- URL 输入部分，包括 Logo、URL 输入框和提交按钮 -->
+    <androidx.constraintlayout.widget.ConstraintLayout
+        android:id="@+id/urlInputLayout"
         android:layout_width="match_parent"
-        android:layout_height="wrap_content"
-        android:hint="Enter your server URL"
-        android:inputType="textUri"
-        android:padding="16dp"
-        android:layout_margin="16dp"
-        android:layout_alignParentTop="true"/>
+        android:layout_height="match_parent">
 
-    <Button
-        android:id="@+id/loadUrlButton"
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
-        android:text="Load URL"
-        android:layout_below="@id/urlInput"
-        android:layout_marginTop="8dp"
-        android:layout_marginStart="16dp"/>
+        <!-- Logo 图片 -->
+        <ImageView
+            android:id="@+id/appLogo"
+            android:layout_width="200dp"
+            android:layout_height="200dp"
+            android:layout_marginTop="32dp"
+            android:contentDescription="App Logo"
+            android:src="@drawable/ic_logo"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toTopOf="parent" />
 
+        <!-- 输入框，用于输入 URL -->
+        <EditText
+            android:id="@+id/urlInput"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_margin="16dp"
+            android:layout_marginTop="16dp"
+            android:background="@drawable/search_box_background"
+            android:hint="Enter your server URL"
+            android:inputType="textUri"
+            android:padding="12dp"
+            android:textColor="@android:color/black"
+            android:textColorHint="@color/black"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toBottomOf="@id/appLogo" />
+
+        <!-- 提交按钮，用于加载用户输入的 URL -->
+        <Button
+            android:id="@+id/loadUrlButton"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="提交"
+            app:layout_constraintTop_toBottomOf="@id/urlInput"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintEnd_toEndOf="parent"
+            android:layout_marginTop="16dp"
+            android:textColor="#fff"
+            android:background="@drawable/button_rounded_background"/>
+
+    </androidx.constraintlayout.widget.ConstraintLayout>
+
+    <!-- WebView 控件，用于显示加载的网页 -->
     <WebView
-        android:id="@+id/webview"
+        android:id="@+id/webView"
         android:layout_width="match_parent"
         android:layout_height="match_parent"
-        android:layout_below="@id/loadUrlButton"/>
-</RelativeLayout>
+        android:visibility="gone"/> <!-- 默认隐藏 WebView，直到用户点击提交按钮 -->
+
+</FrameLayout>
diff --git a/app/src/main/res/values/colors.xml b/app/src/main/res/values/colors.xml
index f8c6127..9f7cbae 100644
--- a/app/src/main/res/values/colors.xml
+++ b/app/src/main/res/values/colors.xml
@@ -5,6 +5,9 @@
     <color name="purple_700">#FF3700B3</color>
     <color name="teal_200">#FF03DAC5</color>
     <color name="teal_700">#FF018786</color>
-    <color name="black">#FF000000</color>
+    <color name="black">#0D0D0D</color>
     <color name="white">#FFFFFFFF</color>
+    <color name="grey">#F4F4F4</color>
+    <color name="grey_light">#f8f8f8</color>
+    <color name="border">#9b9b9b</color>
 </resources>
\ No newline at end of file
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index 83ac948..7d04937 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -1,3 +1,4 @@
 <resources>
     <string name="app_name">lobchat</string>
+    <string name="enter_your_server_url">Enter your server URL</string>
 </resources>
\ No newline at end of file