diff --git a/.DS_Store b/.DS_Store
index d09b377..f475618 100644
Binary files a/.DS_Store and b/.DS_Store differ
diff --git a/android/.gradle/8.5/executionHistory/executionHistory.bin b/android/.gradle/8.5/executionHistory/executionHistory.bin
index 508368f..bc564d3 100644
Binary files a/android/.gradle/8.5/executionHistory/executionHistory.bin and b/android/.gradle/8.5/executionHistory/executionHistory.bin differ
diff --git a/android/.gradle/8.5/executionHistory/executionHistory.lock b/android/.gradle/8.5/executionHistory/executionHistory.lock
index 0f6277c..877c539 100644
Binary files a/android/.gradle/8.5/executionHistory/executionHistory.lock and b/android/.gradle/8.5/executionHistory/executionHistory.lock differ
diff --git a/android/.gradle/8.5/fileHashes/fileHashes.bin b/android/.gradle/8.5/fileHashes/fileHashes.bin
index b5390e3..e6d8e7b 100644
Binary files a/android/.gradle/8.5/fileHashes/fileHashes.bin and b/android/.gradle/8.5/fileHashes/fileHashes.bin differ
diff --git a/android/.gradle/8.5/fileHashes/fileHashes.lock b/android/.gradle/8.5/fileHashes/fileHashes.lock
index 35955aa..9c4a4bf 100644
Binary files a/android/.gradle/8.5/fileHashes/fileHashes.lock and b/android/.gradle/8.5/fileHashes/fileHashes.lock differ
diff --git a/android/.gradle/8.5/fileHashes/resourceHashesCache.bin b/android/.gradle/8.5/fileHashes/resourceHashesCache.bin
index 520d066..1faa1d5 100644
Binary files a/android/.gradle/8.5/fileHashes/resourceHashesCache.bin and b/android/.gradle/8.5/fileHashes/resourceHashesCache.bin differ
diff --git a/android/.gradle/buildOutputCleanup/buildOutputCleanup.lock b/android/.gradle/buildOutputCleanup/buildOutputCleanup.lock
index aad4f8a..7900dd5 100644
Binary files a/android/.gradle/buildOutputCleanup/buildOutputCleanup.lock and b/android/.gradle/buildOutputCleanup/buildOutputCleanup.lock differ
diff --git a/android/.gradle/buildOutputCleanup/outputFiles.bin b/android/.gradle/buildOutputCleanup/outputFiles.bin
index 7aa3d7a..ce44734 100644
Binary files a/android/.gradle/buildOutputCleanup/outputFiles.bin and b/android/.gradle/buildOutputCleanup/outputFiles.bin differ
diff --git a/android/.gradle/file-system.probe b/android/.gradle/file-system.probe
index 3821b15..615bfff 100644
Binary files a/android/.gradle/file-system.probe and b/android/.gradle/file-system.probe differ
diff --git a/android/.idea/misc.xml b/android/.idea/misc.xml
index d15a481..e756225 100644
--- a/android/.idea/misc.xml
+++ b/android/.idea/misc.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
   <component name="ExternalStorageConfigurationManager" enabled="true" />
   <component name="ProjectRootManager" version="2" languageLevel="JDK_21" default="true" project-jdk-name="jbr-21" project-jdk-type="JavaSDK">
diff --git a/android/app/src/main/AndroidManifest.xml b/android/app/src/main/AndroidManifest.xml
index f802450..baf3e7d 100644
--- a/android/app/src/main/AndroidManifest.xml
+++ b/android/app/src/main/AndroidManifest.xml
@@ -30,6 +30,9 @@
         <activity
             android:name=".HeightSelectionActivity"
             android:exported="false" />
+        <activity
+            android:name=".LoginActivity"
+            android:exported="false" />
     </application>
 
 </manifest>
\ No newline at end of file
diff --git a/android/app/src/main/java/org/tensorflow/lite/examples/poseestimation/HeightSelectionActivity.kt b/android/app/src/main/java/org/tensorflow/lite/examples/poseestimation/HeightSelectionActivity.kt
index 84f0974..5b87e8e 100644
--- a/android/app/src/main/java/org/tensorflow/lite/examples/poseestimation/HeightSelectionActivity.kt
+++ b/android/app/src/main/java/org/tensorflow/lite/examples/poseestimation/HeightSelectionActivity.kt
@@ -84,7 +84,7 @@ class HeightSelectionActivity : AppCompatActivity() {
 
     private fun setupClickListeners() {
         nextButton.setOnClickListener {
-            val intent = Intent(this, MainActivity::class.java)
+            val intent = Intent(this, LoginActivity::class.java)
             intent.putExtra("selected_gender", selectedGender)
             intent.putExtra("selected_age", selectedAge)
             intent.putExtra("selected_weight", selectedWeight)
diff --git a/android/app/src/main/java/org/tensorflow/lite/examples/poseestimation/LoginActivity.kt b/android/app/src/main/java/org/tensorflow/lite/examples/poseestimation/LoginActivity.kt
new file mode 100644
index 0000000..d1e289b
--- /dev/null
+++ b/android/app/src/main/java/org/tensorflow/lite/examples/poseestimation/LoginActivity.kt
@@ -0,0 +1,60 @@
+package org.tensorflow.lite.examples.poseestimation
+
+import android.content.Intent
+import android.os.Bundle
+import android.widget.Toast
+import androidx.appcompat.app.AppCompatActivity
+import com.google.android.material.textfield.TextInputEditText
+import android.widget.Button
+import android.widget.TextView
+import android.widget.EditText
+
+class LoginActivity : AppCompatActivity() {
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_login)
+
+        // 获取从上一个页面传递的数据
+        val selectedGender = intent.getStringExtra("selected_gender")
+        val selectedAge = intent.getIntExtra("selected_age", 0)
+        val selectedWeight = intent.getIntExtra("selected_weight", 0)
+        val selectedHeight = intent.getIntExtra("selected_height", 0)
+
+        // 绑定控件
+        val emailEdit = findViewById<EditText>(R.id.editEmail)
+        val passwordEdit = findViewById<EditText>(R.id.editPassword)
+        val loginBtn = findViewById<Button>(R.id.btnLogin)
+        val forgotPassword = findViewById<TextView>(R.id.forgotPassword)
+
+        // 登录按钮点击事件
+        loginBtn.setOnClickListener {
+            val email = emailEdit.text.toString().trim()
+            val password = passwordEdit.text.toString().trim()
+
+            // 表单验证
+            if (email.isEmpty()) {
+                emailEdit.error = "请输入邮箱"
+                return@setOnClickListener
+            }
+            if (password.isEmpty()) {
+                passwordEdit.error = "请输入密码"
+                return@setOnClickListener
+            }
+
+            // TODO: 这里添加实际的登录验证逻辑
+            // 目前仅做演示，直接跳转到主页面
+            val intent = Intent(this, MainActivity::class.java)
+            intent.putExtra("selected_gender", selectedGender)
+            intent.putExtra("selected_age", selectedAge)
+            intent.putExtra("selected_weight", selectedWeight)
+            intent.putExtra("selected_height", selectedHeight)
+            startActivity(intent)
+            finish()
+        }
+
+        // 忘记密码点击事件
+        forgotPassword.setOnClickListener {
+            Toast.makeText(this, "忘记密码功能开发中", Toast.LENGTH_SHORT).show()
+        }
+    }
+}
diff --git a/android/app/src/main/res/color/selector_input_border.xml b/android/app/src/main/res/color/selector_input_border.xml
new file mode 100644
index 0000000..282f925
--- /dev/null
+++ b/android/app/src/main/res/color/selector_input_border.xml
@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:color="#B266FF" android:state_focused="true"/>
+    <item android:color="#FFFFFF"/>
+</selector> 
\ No newline at end of file
diff --git a/android/app/src/main/res/drawable/btn_purple_rounded.xml b/android/app/src/main/res/drawable/btn_purple_rounded.xml
new file mode 100644
index 0000000..7f5764f
--- /dev/null
+++ b/android/app/src/main/res/drawable/btn_purple_rounded.xml
@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android">
+    <solid android:color="#BF5AF2"/>
+    <corners android:radius="28dp"/>
+</shape>
diff --git a/android/app/src/main/res/drawable/login_woman.png b/android/app/src/main/res/drawable/login_woman.png
new file mode 100644
index 0000000..51cb25b
Binary files /dev/null and b/android/app/src/main/res/drawable/login_woman.png differ
diff --git a/android/app/src/main/res/layout/activity_age_selection.xml b/android/app/src/main/res/layout/activity_age_selection.xml
index 38f37ef..dc2c690 100644
--- a/android/app/src/main/res/layout/activity_age_selection.xml
+++ b/android/app/src/main/res/layout/activity_age_selection.xml
@@ -3,7 +3,7 @@
     xmlns:app="http://schemas.android.com/apk/res-auto"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    android:background="@android:color/black">
+    android:background="@color/black">
 
     <TextView
         android:id="@+id/titleText"
diff --git a/android/app/src/main/res/layout/activity_gender_selection.xml b/android/app/src/main/res/layout/activity_gender_selection.xml
index 0e26131..2bcf980 100644
--- a/android/app/src/main/res/layout/activity_gender_selection.xml
+++ b/android/app/src/main/res/layout/activity_gender_selection.xml
@@ -3,7 +3,7 @@
     xmlns:app="http://schemas.android.com/apk/res-auto"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    android:background="@android:color/black">
+    android:background="@color/black">
 
     <TextView
         android:id="@+id/titleText"
diff --git a/android/app/src/main/res/layout/activity_height_selection.xml b/android/app/src/main/res/layout/activity_height_selection.xml
index 6f2700c..d854478 100644
--- a/android/app/src/main/res/layout/activity_height_selection.xml
+++ b/android/app/src/main/res/layout/activity_height_selection.xml
@@ -3,7 +3,7 @@
     xmlns:app="http://schemas.android.com/apk/res-auto"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    android:background="@android:color/black">
+    android:background="@color/black">
 
     <!-- 标题 -->
     <TextView
diff --git a/android/app/src/main/res/layout/activity_login.xml b/android/app/src/main/res/layout/activity_login.xml
new file mode 100644
index 0000000..40194cb
--- /dev/null
+++ b/android/app/src/main/res/layout/activity_login.xml
@@ -0,0 +1,144 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:background="#19191B">
+
+    <!-- 背景大图 -->
+    <ImageView
+        android:id="@+id/bgImage"
+        android:layout_width="match_parent"
+        android:layout_height="0dp"
+        android:scaleType="centerCrop"
+        android:src="@drawable/login_woman"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintDimensionRatio="417:515"
+        app:layout_constraintWidth_default="percent"
+        app:layout_constraintWidth_percent="1.0"/>
+
+    <!-- 顶部Tab切换栏 -->
+    <LinearLayout
+        android:id="@+id/tabBar"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:orientation="horizontal"
+        android:paddingStart="32dp"
+        android:paddingTop="48dp"
+        android:paddingEnd="32dp"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintEnd_toEndOf="parent">
+
+        <LinearLayout
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:orientation="vertical">
+            <TextView
+                android:id="@+id/tabLogin"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:text="Login"
+                android:textColor="#FFF"
+                android:textSize="18sp"
+                android:textStyle="bold"/>
+            <View
+                android:layout_width="32dp"
+                android:layout_height="2dp"
+                android:background="#BF5AF2"
+                android:layout_gravity="center_horizontal"/>
+        </LinearLayout>
+
+        <Space
+            android:layout_width="24dp"
+            android:layout_height="1dp"/>
+
+        <LinearLayout
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:orientation="vertical">
+            <TextView
+                android:id="@+id/tabSignup"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:text="Sign up"
+                android:textColor="#99FFFFFF"
+                android:textSize="18sp"/>
+            <View
+                android:layout_width="32dp"
+                android:layout_height="2dp"
+                android:background="@android:color/transparent"
+                android:layout_gravity="center_horizontal"/>
+        </LinearLayout>
+    </LinearLayout>
+
+    <!-- 下半部分遮罩和表单 -->
+    <androidx.cardview.widget.CardView
+        android:id="@+id/formCard"
+        android:layout_width="0dp"
+        android:layout_height="0dp"
+        app:cardCornerRadius="32dp"
+        app:cardBackgroundColor="#19191B"
+        app:layout_constraintTop_toBottomOf="@id/bgImage"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintEnd_toEndOf="parent">
+
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:orientation="vertical"
+            android:padding="24dp">
+
+            <!-- 用户名输入框 -->
+            <EditText
+                android:id="@+id/editEmail"
+                android:layout_width="match_parent"
+                android:layout_height="60dp"
+                android:hint="用户名"
+                android:textColor="#FFFFFF"
+                android:textColorHint="#FFFFFF"
+                android:background="@android:color/transparent"
+                android:inputType="text"
+                android:layout_marginBottom="16dp"/>
+
+            <!-- 密码输入框 -->
+            <EditText
+                android:id="@+id/editPassword"
+                android:layout_width="match_parent"
+                android:layout_height="60dp"
+                android:hint="密码"
+                android:textColor="#FFFFFF"
+                android:textColorHint="#FFFFFF"
+                android:background="@android:color/transparent"
+                android:inputType="textPassword"/>
+
+            <!-- 忘记密码 -->
+            <TextView
+                android:id="@+id/forgotPassword"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:text="Forgot Password"
+                android:textColor="#BF5AF2"
+                android:textSize="14sp"
+                android:layout_gravity="end"
+                android:layout_marginTop="8dp"/>
+
+            <!-- 主按钮 -->
+            <Button
+                android:id="@+id/btnLogin"
+                android:layout_width="match_parent"
+                android:layout_height="56dp"
+                android:text="Login"
+                android:textColor="#FFF"
+                android:textSize="18sp"
+                android:layout_marginTop="32dp"
+                android:background="@drawable/btn_purple_rounded"
+                android:stateListAnimator="@null"/>
+        </LinearLayout>
+    </androidx.cardview.widget.CardView>
+
+</androidx.constraintlayout.widget.ConstraintLayout>
diff --git a/android/app/src/main/res/layout/activity_weight_selection.xml b/android/app/src/main/res/layout/activity_weight_selection.xml
index de0443a..3e48ce0 100644
--- a/android/app/src/main/res/layout/activity_weight_selection.xml
+++ b/android/app/src/main/res/layout/activity_weight_selection.xml
@@ -3,7 +3,7 @@
     xmlns:app="http://schemas.android.com/apk/res-auto"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    android:background="@android:color/black">
+    android:background="@color/black">
 
     <!-- 标题 -->
     <TextView
diff --git a/android/app/src/main/res/values/colors.xml b/android/app/src/main/res/values/colors.xml
index cfa4818..ca2e11b 100644
--- a/android/app/src/main/res/values/colors.xml
+++ b/android/app/src/main/res/values/colors.xml
@@ -4,7 +4,7 @@
     <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">#1C1C1E</color>
     <color name="white">#FFFFFFFF</color>
     <color name="gray">#757575</color>
     <color name="gray_light">#E0E0E0</color>
diff --git a/android/app/src/main/res/values/themes.xml b/android/app/src/main/res/values/themes.xml
index 29c4a51..afa5ebe 100644
--- a/android/app/src/main/res/values/themes.xml
+++ b/android/app/src/main/res/values/themes.xml
@@ -14,6 +14,7 @@
         <!-- Customize your theme here. -->
         <item name="android:textColor">@color/black</item>
         <item name="android:textSize">16sp</item>
+        <item name="android:textColorHint">#FFFFFF</item>
     </style>
     <style name="NumberPickerStyle">
         <item name="android:textSize">40sp</item>