diff --git a/app/src/main/java/com/example/smarthome/MainActivity.kt b/app/src/main/java/com/example/smarthome/MainActivity.kt
index 3ce39da..c2793aa 100644
--- a/app/src/main/java/com/example/smarthome/MainActivity.kt
+++ b/app/src/main/java/com/example/smarthome/MainActivity.kt
@@ -26,6 +26,8 @@ import androidx.compose.ui.res.painterResource
 import androidx.compose.ui.layout.ContentScale
 import androidx.compose.foundation.background
 import androidx.compose.foundation.layout.systemBarsPadding
+import androidx.compose.runtime.collectAsState
+import com.example.smarthome.data.BackgroundManager
 
 class MainActivity : ComponentActivity() {
     override fun onCreate(savedInstanceState: Bundle?) {
@@ -113,10 +115,20 @@ fun AppRoot() {
         rooms = roomList
     }
     
+    // 初始化背景管理器并获取当前选中的背景
+    androidx.compose.runtime.LaunchedEffect(Unit) {
+        BackgroundManager.init(context)
+    }
+    val selectedBgId by BackgroundManager.selectedBackground.collectAsState()
+    val currentBg = BackgroundManager.backgrounds.getOrNull(selectedBgId)
+    val backgroundRes = currentBg?.resourceId ?: R.drawable.background1
+    // 根据背景类型调整遮罩透明度：暗色背景减少遮罩，亮色背景增加遮罩
+    val overlayAlpha = if (currentBg?.isDark == true) 0x11 else 0x88
+    
     Box(modifier = Modifier.fillMaxSize()) {
         // 背景图片 - 填充整个屏幕包括系统栏，使用FillBounds确保完全填充
         Image(
-            painter = painterResource(id = R.drawable.background),
+            painter = painterResource(id = backgroundRes),
             contentDescription = null,
             modifier = Modifier.fillMaxSize(),
             contentScale = ContentScale.FillBounds,
@@ -127,7 +139,7 @@ fun AppRoot() {
         Box(
             modifier = Modifier
                 .fillMaxSize()
-                .background(Color(0x88121212))
+                .background(Color(overlayAlpha shl 24 or 0x121212))
         )
         
         // 主内容 - 添加系统栏内边距
diff --git a/app/src/main/java/com/example/smarthome/data/WeatherService.kt b/app/src/main/java/com/example/smarthome/data/WeatherService.kt
index 78f546e..2340249 100644
--- a/app/src/main/java/com/example/smarthome/data/WeatherService.kt
+++ b/app/src/main/java/com/example/smarthome/data/WeatherService.kt
@@ -26,6 +26,11 @@ data class WeatherInfo(
 object WeatherService {
     private const val TAG = "WeatherService"
     
+    // 缓存天气数据，避免重复获取
+    private var cachedWeather: WeatherInfo? = null
+    private var lastFetchTime: Long = 0
+    private const val CACHE_DURATION = 10 * 60 * 1000L // 10分钟缓存
+    
     private val client = OkHttpClient.Builder()
         .connectTimeout(15, TimeUnit.SECONDS)
         .readTimeout(15, TimeUnit.SECONDS)
@@ -34,8 +39,16 @@ object WeatherService {
     /**
      * 获取天气信息
      * 优先使用GPS定位，失败则用IP定位
+     * 带缓存机制，10分钟内不重复获取
      */
-    suspend fun getWeather(context: Context): WeatherInfo {
+    suspend fun getWeather(context: Context, forceRefresh: Boolean = false): WeatherInfo {
+        // 检查缓存
+        val now = System.currentTimeMillis()
+        if (!forceRefresh && cachedWeather != null && (now - lastFetchTime) < CACHE_DURATION) {
+            Log.d(TAG, "Using cached weather data")
+            return cachedWeather!!
+        }
+        
         return withContext(Dispatchers.IO) {
             // 1. 优先尝试GPS定位
             val gpsLocation = getGpsLocation(context)
@@ -46,6 +59,8 @@ object WeatherService {
                 // 用GPS坐标获取天气
                 val weatherResult = getWeatherByLocation(lat, lon, city)
                 if (weatherResult != null) {
+                    cachedWeather = weatherResult
+                    lastFetchTime = now
                     return@withContext weatherResult
                 }
             }
@@ -54,6 +69,8 @@ object WeatherService {
             Log.w(TAG, "GPS failed, trying wttr.in...")
             val wttrResult = tryWttrIn()
             if (wttrResult != null) {
+                cachedWeather = wttrResult
+                lastFetchTime = now
                 return@withContext wttrResult
             }
             
@@ -61,6 +78,8 @@ object WeatherService {
             Log.w(TAG, "wttr.in failed, trying backup...")
             val backupResult = tryBackupApi()
             if (backupResult != null) {
+                cachedWeather = backupResult
+                lastFetchTime = now
                 return@withContext backupResult
             }
             
diff --git a/app/src/main/java/com/example/smarthome/ui/MainScaffold.kt b/app/src/main/java/com/example/smarthome/ui/MainScaffold.kt
index c451f51..b24cbf0 100644
--- a/app/src/main/java/com/example/smarthome/ui/MainScaffold.kt
+++ b/app/src/main/java/com/example/smarthome/ui/MainScaffold.kt
@@ -316,7 +316,7 @@ fun RoomTabs(
         }
         
         // 固定的添加按钮
-        GradientButton("+ 添加", onClick = onAddRoomClick)
+        GradientButton("+ 添加房间", onClick = onAddRoomClick)
     }
 }
 
@@ -490,17 +490,82 @@ fun NavItem(title: String, selected: Boolean) {
 
 @Composable
 fun SideNavRail(selectedNavItem: Int = 0, onNavItemSelect: (Int) -> Unit = {}) {
-    Column(modifier = Modifier.width(100.dp).fillMaxHeight().padding(start = 12.dp, end = 4.dp, top = 12.dp, bottom = 12.dp), verticalArrangement = Arrangement.spacedBy(16.dp)) {
-        Spacer(modifier = Modifier.height(48.dp))
-        NavRailItem("控制台", R.drawable.ic_dashboard, selectedNavItem == 0, onClick = { onNavItemSelect(0) })
-        NavRailItem("场景", R.drawable.ic_scene, selectedNavItem == 1, onClick = { onNavItemSelect(1) })
-        NavRailItem("自动化", R.drawable.ic_automation, selectedNavItem == 2, onClick = { onNavItemSelect(2) })
-        NavRailItem("统计", R.drawable.ic_statistics, selectedNavItem == 3, onClick = { onNavItemSelect(3) })
-        NavRailItem("安全", R.drawable.ic_security, selectedNavItem == 4, onClick = { onNavItemSelect(4) })
-        NavRailItem("设置", R.drawable.ic_settings, selectedNavItem == 5, onClick = { onNavItemSelect(5) })
+    val context = androidx.compose.ui.platform.LocalContext.current
+    val selectedBg by com.example.smarthome.data.BackgroundManager.selectedBackground.collectAsState()
+    val isDarkMode = com.example.smarthome.data.BackgroundManager.backgrounds.getOrNull(selectedBg)?.isDark ?: false
+    
+    Column(
+        modifier = Modifier
+            .width(100.dp)
+            .fillMaxHeight()
+            .padding(start = 12.dp, end = 4.dp, top = 12.dp, bottom = 12.dp),
+        verticalArrangement = Arrangement.SpaceBetween
+    ) {
+        // 上半部分：导航项
+        Column(verticalArrangement = Arrangement.spacedBy(16.dp)) {
+            Spacer(modifier = Modifier.height(48.dp))
+            NavRailItem("控制台", R.drawable.ic_dashboard, selectedNavItem == 0, onClick = { onNavItemSelect(0) })
+            NavRailItem("场景", R.drawable.ic_scene, selectedNavItem == 1, onClick = { onNavItemSelect(1) })
+            NavRailItem("自动化", R.drawable.ic_automation, selectedNavItem == 2, onClick = { onNavItemSelect(2) })
+            NavRailItem("统计", R.drawable.ic_statistics, selectedNavItem == 3, onClick = { onNavItemSelect(3) })
+            NavRailItem("安全", R.drawable.ic_security, selectedNavItem == 4, onClick = { onNavItemSelect(4) })
+            NavRailItem("设置", R.drawable.ic_settings, selectedNavItem == 5, onClick = { onNavItemSelect(5) })
+        }
+        
+        // 底部：模式切换按钮（暂时注释）
+        /*
+        ThemeModeToggle(
+            isDarkMode = isDarkMode,
+            onToggle = {
+                if (isDarkMode) {
+                    com.example.smarthome.data.BackgroundManager.setBackground(context, 0) // 丝绸白
+                } else {
+                    com.example.smarthome.data.BackgroundManager.setBackground(context, 2) // 紫金绸
+                }
+            }
+        )
+        */
     }
 }
 
+/*
+@Composable
+fun ThemeModeToggle(isDarkMode: Boolean, onToggle: () -> Unit) {
+    Column(
+        horizontalAlignment = Alignment.CenterHorizontally,
+        modifier = Modifier
+            .clickable(
+                indication = null,
+                interactionSource = remember { MutableInteractionSource() }
+            ) { onToggle() }
+            .padding(vertical = 4.dp)
+    ) {
+        Box(
+            modifier = Modifier
+                .size(48.dp)
+                .clip(RoundedCornerShape(14.dp))
+                .background(
+                    if (isDarkMode) {
+                        Brush.linearGradient(
+                            listOf(Color(0xFF2C2C54), Color(0xFF1A1A2E))
+                        )
+                    } else {
+                        Brush.linearGradient(
+                            listOf(Color(0xFFFFE082), Color(0xFFFFD54F))
+                        )
+                    }
+                ),
+            contentAlignment = Alignment.Center
+        ) {
+            Text(
+                text = if (isDarkMode) "🌙" else "☀️",
+                fontSize = 20.sp
+            )
+        }
+    }
+}
+*/
+
 @Composable
 fun NavRailItem(text: String, iconRes: Int, selected: Boolean, onClick: () -> Unit = {}) {
     val scale by androidx.compose.animation.core.animateFloatAsState(
@@ -574,11 +639,7 @@ fun TopBar() {
     
     Row(modifier = Modifier.fillMaxWidth(), horizontalArrangement = Arrangement.SpaceBetween, verticalAlignment = Alignment.CenterVertically) {
         Text(text = "控制台", style = MaterialTheme.typography.titleLarge, fontWeight = FontWeight.Bold, color = Color.White)
-        Row(horizontalArrangement = Arrangement.spacedBy(12.dp), verticalAlignment = Alignment.CenterVertically) {
-            // 天气信息卡片
-            WeatherCard(weatherInfo = weatherInfo, isLoading = isLoading)
-            GradientButton("+ 添加设备")
-        }
+        WeatherCard(weatherInfo = weatherInfo, isLoading = isLoading)
     }
 }
 
@@ -1060,9 +1121,40 @@ fun AirConditionerCard(modifier: Modifier = Modifier, roomName: String = "房间
     var selectedMode by remember { mutableStateOf(0) } // 0:制冷 1:制热 2:除湿 3:送风
     var fanSpeed by remember { mutableStateOf(1) } // 0:自动 1:低 2:中 3:高
     
-    val modes = listOf("❄️" to "制冷", "🔥" to "制热", "💧" to "除湿", "🌀" to "送风")
+    // 模式emoji图标
+    val modeIcons = listOf(
+        "❄️" to "制冷",
+        "☀️" to "制热", 
+        "💧" to "除湿",
+        "🌀" to "送风"
+    )
     val fanSpeeds = listOf("自动", "低", "中", "高")
     
+    // 图标动画
+    val infiniteTransition = rememberInfiniteTransition(label = "ac_icon")
+    
+    // 旋转动画（制冷、制热、送风）
+    val iconRotation by infiniteTransition.animateFloat(
+        initialValue = 0f,
+        targetValue = 360f,
+        animationSpec = infiniteRepeatable(
+            animation = tween(durationMillis = 3000, easing = LinearEasing),
+            repeatMode = RepeatMode.Restart
+        ),
+        label = "icon_rotation"
+    )
+    
+    // 水滴下落动画（除湿）
+    val dropOffset by infiniteTransition.animateFloat(
+        initialValue = -2f,
+        targetValue = 2f,
+        animationSpec = infiniteRepeatable(
+            animation = tween(durationMillis = 800, easing = androidx.compose.animation.core.EaseInOut),
+            repeatMode = RepeatMode.Reverse
+        ),
+        label = "drop_offset"
+    )
+    
     // 根据模式决定主题色
     val accentColor = when (selectedMode) {
         0 -> Color(0xFF4FC3F7) // 制冷 - 蓝色
@@ -1071,6 +1163,9 @@ fun AirConditionerCard(modifier: Modifier = Modifier, roomName: String = "房间
         else -> Color(0xFFB0BEC5) // 送风 - 灰色
     }
     
+    // 当前模式的emoji
+    val currentEmoji = modeIcons[selectedMode].first
+    
     Box(
         modifier = modifier
             .height(260.dp)
@@ -1096,7 +1191,7 @@ fun AirConditionerCard(modifier: Modifier = Modifier, roomName: String = "房间
                 modifier = Modifier.fillMaxWidth()
             ) {
                 Row(verticalAlignment = Alignment.CenterVertically, horizontalArrangement = Arrangement.spacedBy(8.dp)) {
-                    // 空调图标
+                    // 空调图标 - 根据模式应用不同动画
                     Box(
                         modifier = Modifier
                             .size(36.dp)
@@ -1104,7 +1199,17 @@ fun AirConditionerCard(modifier: Modifier = Modifier, roomName: String = "房间
                             .background(accentColor.copy(alpha = if (isOn) 0.3f else 0.1f)),
                         contentAlignment = Alignment.Center
                     ) {
-                        Text(text = "❄️", fontSize = 18.sp)
+                        // 根据模式选择动画：除湿用上下移动，其他用旋转
+                        val emojiModifier = when {
+                            !isOn -> Modifier
+                            selectedMode == 2 -> Modifier.offset(y = dropOffset.dp) // 除湿：上下移动
+                            else -> Modifier.rotate(iconRotation) // 其他：旋转
+                        }
+                        Text(
+                            text = currentEmoji,
+                            fontSize = 18.sp,
+                            modifier = emojiModifier
+                        )
                     }
                     Column {
                         Text(text = "空调", fontWeight = FontWeight.SemiBold, color = Color.White, fontSize = 16.sp)
@@ -1177,22 +1282,28 @@ fun AirConditionerCard(modifier: Modifier = Modifier, roomName: String = "房间
                 modifier = Modifier.fillMaxWidth(),
                 horizontalArrangement = Arrangement.spacedBy(8.dp)
             ) {
-                modes.forEachIndexed { index, (icon, name) ->
+                modeIcons.forEachIndexed { index, (emoji, name) ->
                     val isSelected = selectedMode == index
+                    val modeColor = when (index) {
+                        0 -> Color(0xFF4FC3F7)
+                        1 -> Color(0xFFFF8A65)
+                        2 -> Color(0xFF81C784)
+                        else -> Color(0xFFB0BEC5)
+                    }
                     Box(
                         modifier = Modifier
                             .weight(1f)
                             .height(44.dp)
                             .clip(RoundedCornerShape(12.dp))
                             .background(
-                                if (isSelected && isOn) accentColor.copy(alpha = 0.4f)
+                                if (isSelected && isOn) modeColor.copy(alpha = 0.4f)
                                 else Color(0xFF2A2A3E).copy(alpha = 0.6f)
                             )
                             .clickable(enabled = isOn) { selectedMode = index },
                         contentAlignment = Alignment.Center
                     ) {
                         Column(horizontalAlignment = Alignment.CenterHorizontally) {
-                            Text(text = icon, fontSize = 14.sp)
+                            Text(text = emoji, fontSize = 14.sp)
                             Text(
                                 text = name,
                                 fontSize = 10.sp,
diff --git a/app/src/main/java/com/example/smarthome/ui/SettingsScreen.kt b/app/src/main/java/com/example/smarthome/ui/SettingsScreen.kt
index e65a45e..103f99d 100644
--- a/app/src/main/java/com/example/smarthome/ui/SettingsScreen.kt
+++ b/app/src/main/java/com/example/smarthome/ui/SettingsScreen.kt
@@ -1,5 +1,6 @@
 package com.example.smarthome.ui
 
+import androidx.compose.foundation.Image
 import androidx.compose.foundation.background
 import androidx.compose.foundation.border
 import androidx.compose.foundation.clickable
@@ -15,9 +16,13 @@ import androidx.compose.ui.draw.clip
 import androidx.compose.ui.draw.shadow
 import androidx.compose.ui.graphics.Brush
 import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.layout.ContentScale
+import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.res.painterResource
 import androidx.compose.ui.text.font.FontWeight
 import androidx.compose.ui.unit.dp
 import androidx.compose.ui.unit.sp
+import com.example.smarthome.data.BackgroundManager
 
 @Composable
 fun SettingsScreen(onBack: () -> Unit) {
@@ -75,12 +80,25 @@ fun SettingsContentList() {
         }}
         
         item { SettingsSection(title = "显示设置") {
-            var darkMode by remember { mutableStateOf(true) }
+            BackgroundSelector()
+            
+            val context = LocalContext.current
+            val selectedBg by BackgroundManager.selectedBackground.collectAsState()
+            // 深色模式根据当前背景是否为暗色来判断
+            val isDarkMode = BackgroundManager.backgrounds.getOrNull(selectedBg)?.isDark ?: false
+            
             SettingsSwitchItem(
                 title = "深色模式",
                 subtitle = "使用深色主题",
-                checked = darkMode,
-                onCheckedChange = { darkMode = it }
+                checked = isDarkMode,
+                onCheckedChange = { dark ->
+                    // 切换深色/浅色模式时自动更换背景
+                    if (dark) {
+                        BackgroundManager.setBackground(context, 2) // 紫金绸
+                    } else {
+                        BackgroundManager.setBackground(context, 0) // 丝绸白
+                    }
+                }
             )
             
             SettingsItem(
@@ -355,3 +373,117 @@ fun SettingsContent() {
         SettingsContentList()
     }
 }
+
+@Composable
+fun BackgroundSelector() {
+    val context = LocalContext.current
+    val selectedBackground by BackgroundManager.selectedBackground.collectAsState()
+    
+    val interactionSources = remember { 
+        BackgroundManager.backgrounds.map { MutableInteractionSource() } 
+    }
+    
+    Column(
+        modifier = Modifier
+            .fillMaxWidth()
+            .clip(RoundedCornerShape(16.dp))
+            .background(Color(0x33121212))
+            .padding(16.dp),
+        verticalArrangement = Arrangement.spacedBy(12.dp)
+    ) {
+        Text(
+            text = "背景壁纸",
+            fontSize = 16.sp,
+            fontWeight = FontWeight.Medium,
+            color = Color.White
+        )
+        Text(
+            text = "选择您喜欢的背景图片",
+            fontSize = 13.sp,
+            color = Color(0xFF9AA0A6)
+        )
+        
+        Spacer(modifier = Modifier.height(4.dp))
+        
+        Row(
+            modifier = Modifier.fillMaxWidth(),
+            horizontalArrangement = Arrangement.spacedBy(12.dp)
+        ) {
+            BackgroundManager.backgrounds.forEachIndexed { index, bg ->
+                val isSelected = selectedBackground == bg.id
+                
+                Column(
+                    modifier = Modifier.weight(1f),
+                    horizontalAlignment = Alignment.CenterHorizontally,
+                    verticalArrangement = Arrangement.spacedBy(6.dp)
+                ) {
+                    Box(
+                        modifier = Modifier
+                            .fillMaxWidth()
+                            .height(56.dp)
+                            .clip(RoundedCornerShape(10.dp))
+                            .then(
+                                if (isSelected) {
+                                    Modifier.border(
+                                        width = 2.dp,
+                                        brush = Brush.linearGradient(
+                                            listOf(Color(0xFFA9F0FF), Color(0xFFB89CFF))
+                                        ),
+                                        shape = RoundedCornerShape(10.dp)
+                                    )
+                                } else Modifier
+                            )
+                            .clickable(
+                                indication = null,
+                                interactionSource = interactionSources[index]
+                            ) {
+                                BackgroundManager.setBackground(context, bg.id)
+                            }
+                    ) {
+                        Image(
+                            painter = painterResource(id = bg.thumbId),
+                            contentDescription = bg.name,
+                            contentScale = ContentScale.Crop,
+                            modifier = Modifier.fillMaxSize()
+                        )
+                        
+                        if (isSelected) {
+                            Box(
+                                modifier = Modifier
+                                    .fillMaxSize()
+                                    .background(Color.Black.copy(alpha = 0.3f)),
+                                contentAlignment = Alignment.Center
+                            ) {
+                                Box(
+                                    modifier = Modifier
+                                        .size(20.dp)
+                                        .clip(RoundedCornerShape(10.dp))
+                                        .background(
+                                            Brush.linearGradient(
+                                                listOf(Color(0xFFA9F0FF), Color(0xFFB89CFF))
+                                            )
+                                        ),
+                                    contentAlignment = Alignment.Center
+                                ) {
+                                    Text(
+                                        text = "✓",
+                                        color = Color.White,
+                                        fontSize = 12.sp,
+                                        fontWeight = FontWeight.Bold
+                                    )
+                                }
+                            }
+                        }
+                    }
+                    
+                    Text(
+                        text = bg.name,
+                        fontSize = 11.sp,
+                        fontWeight = if (isSelected) FontWeight.Medium else FontWeight.Normal,
+                        color = if (isSelected) Color(0xFFA9F0FF) else Color(0xFF9AA0A6)
+                    )
+                }
+            }
+        }
+    }
+}
diff --git a/app/src/main/res/drawable/ic_automation.xml b/app/src/main/res/drawable/ic_automation.xml
index 497ab8e..8ce4ed6 100644
--- a/app/src/main/res/drawable/ic_automation.xml
+++ b/app/src/main/res/drawable/ic_automation.xml
@@ -4,28 +4,8 @@
     android:viewportWidth="24"
     android:viewportHeight="24">
     
-    <!-- 自动化图标 - 齿轮和箭头 -->
+    <!-- 自动化图标 - 闪电 -->
     <path
         android:fillColor="#FFFFFFFF"
-        android:pathData="M12,2 L10.5,4.5 L7.5,4.5 L6,7 L3.5,8.5 L3.5,11.5 L6,13 L7.5,15.5 L10.5,15.5 L12,18 L13.5,15.5 L16.5,15.5 L18,13 L20.5,11.5 L20.5,8.5 L18,7 L16.5,4.5 L13.5,4.5 Z M12,8 C14.21,8 16,9.79 16,12 C16,14.21 14.21,16 12,16 C9.79,16 8,14.21 8,12 C8,9.79 9.79,8 12,8 Z"/>
-    
-    <!-- 内圈 -->
-    <path
-        android:fillColor="#FFFFFFFF"
-        android:pathData="M12,10 C10.9,10 10,10.9 10,12 C10,13.1 10.9,14 12,14 C13.1,14 14,13.1 14,12 C14,10.9 13.1,10 12,10 Z"/>
-    
-    <!-- 循环箭头 -->
-    <path
-        android:strokeColor="#FFFFFFFF"
-        android:strokeWidth="1.5"
-        android:strokeLineCap="round"
-        android:fillColor="#00000000"
-        android:pathData="M19,12 C19,15.87 15.87,19 12,19 C8.13,19 5,15.87 5,12 M5,12 L7,10 M5,12 L7,14"/>
-    
-    <path
-        android:strokeColor="#FFFFFFFF"
-        android:strokeWidth="1.5"
-        android:strokeLineCap="round"
-        android:fillColor="#00000000"
-        android:pathData="M5,12 C5,8.13 8.13,5 12,5 C15.87,5 19,8.13 19,12 M19,12 L17,10 M19,12 L17,14"/>
+        android:pathData="M13,2 L4,14 L11,14 L11,22 L20,10 L13,10 L13,2 Z"/>
 </vector>
diff --git a/app/src/main/res/drawable/ic_scene.xml b/app/src/main/res/drawable/ic_scene.xml
index d4c209f..53d7e8c 100644
--- a/app/src/main/res/drawable/ic_scene.xml
+++ b/app/src/main/res/drawable/ic_scene.xml
@@ -4,28 +4,24 @@
     android:viewportWidth="24"
     android:viewportHeight="24">
     
-    <!-- 场景图标 - 魔法棒 -->
+    <!-- 场景图标 - 四个方块组成的网格 -->
+    <!-- 左上 -->
     <path
         android:fillColor="#FFFFFFFF"
-        android:pathData="M20,8 L18,8 L18,6 C18,5.45 17.55,5 17,5 C16.45,5 16,5.45 16,6 L16,8 L14,8 C13.45,8 13,8.45 13,9 C13,9.55 13.45,10 14,10 L16,10 L16,12 C16,12.55 16.45,13 17,13 C17.55,13 18,12.55 18,12 L18,10 L20,10 C20.55,10 21,9.55 21,9 C21,8.45 20.55,8 20,8 Z"/>
+        android:pathData="M4,4 L10,4 C10.55,4 11,4.45 11,5 L11,10 C11,10.55 10.55,11 10,11 L4,11 C3.45,11 3,10.55 3,10 L3,5 C3,4.45 3.45,4 4,4 Z"/>
     
+    <!-- 右上 -->
     <path
         android:fillColor="#FFFFFFFF"
-        android:pathData="M11,4 L10,4 L10,3 C10,2.45 9.55,2 9,2 C8.45,2 8,2.45 8,3 L8,4 L7,4 C6.45,4 6,4.45 6,5 C6,5.55 6.45,6 7,6 L8,6 L8,7 C8,7.55 8.45,8 9,8 C9.55,8 10,7.55 10,7 L10,6 L11,6 C11.55,6 12,5.55 12,5 C12,4.45 11.55,4 11,4 Z"/>
+        android:pathData="M14,4 L20,4 C20.55,4 21,4.45 21,5 L21,10 C21,10.55 20.55,11 20,11 L14,11 C13.45,11 13,10.55 13,10 L13,5 C13,4.45 13.45,4 14,4 Z"/>
     
+    <!-- 左下 -->
     <path
         android:fillColor="#FFFFFFFF"
-        android:pathData="M3.5,11 L3.5,10 L2.5,10 C2.22,10 2,9.78 2,9.5 C2,9.22 2.22,9 2.5,9 L3.5,9 L3.5,8 C3.5,7.72 3.72,7.5 4,7.5 C4.28,7.5 4.5,7.72 4.5,8 L4.5,9 L5.5,9 C5.78,9 6,9.22 6,9.5 C6,9.78 5.78,10 5.5,10 L4.5,10 L4.5,11 C4.5,11.28 4.28,11.5 4,11.5 C3.72,11.5 3.5,11.28 3.5,11 Z"/>
+        android:pathData="M4,13 L10,13 C10.55,13 11,13.45 11,14 L11,19 C11,19.55 10.55,20 10,20 L4,20 C3.45,20 3,19.55 3,19 L3,14 C3,13.45 3.45,13 4,13 Z"/>
     
-    <!-- 魔法棒主体 -->
+    <!-- 右下 -->
     <path
         android:fillColor="#FFFFFFFF"
-        android:pathData="M15.5,14.5 L4.5,3.5 C4.11,3.11 3.48,3.11 3.09,3.5 L3.5,3.91 L14.5,14.91 L15.5,14.5 Z"/>
-    
-    <path
-        android:strokeColor="#FFFFFFFF"
-        android:strokeWidth="2"
-        android:strokeLineCap="round"
-        android:fillColor="#00000000"
-        android:pathData="M15,15 L4,4"/>
+        android:pathData="M14,13 L20,13 C20.55,13 21,13.45 21,14 L21,19 C21,19.55 20.55,20 20,20 L14,20 C13.45,20 13,19.55 13,19 L13,14 C13,13.45 13.45,13 14,13 Z"/>
 </vector>
diff --git a/app/src/main/res/drawable/ic_security.xml b/app/src/main/res/drawable/ic_security.xml
index 6ada778..bdfaf4d 100644
--- a/app/src/main/res/drawable/ic_security.xml
+++ b/app/src/main/res/drawable/ic_security.xml
@@ -1,3 +1,11 @@
-<vector xmlns:android="http://schemas.android.com/apk/res/android" android:width="24dp" android:height="24dp" android:viewportWidth="24" android:viewportHeight="24">
-    <path android:strokeColor="#FFFFFFFF" android:strokeWidth="2" android:fillColor="#00000000" android:pathData="M12,3 L21,8 L12,21 L3,8 Z"/>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+    
+    <!-- 安全图标 - 盾牌 -->
+    <path
+        android:fillColor="#FFFFFFFF"
+        android:pathData="M12,1 L3,5 L3,11 C3,16.55 6.84,21.74 12,23 C17.16,21.74 21,16.55 21,11 L21,5 L12,1 Z M12,11.99 L19,11.99 C18.47,16.11 15.72,19.78 12,20.93 L12,12 L5,12 L5,6.3 L12,3.19 L12,11.99 Z"/>
 </vector>
diff --git a/app/src/main/res/drawable/ic_statistics.xml b/app/src/main/res/drawable/ic_statistics.xml
index b94951b..56851eb 100644
--- a/app/src/main/res/drawable/ic_statistics.xml
+++ b/app/src/main/res/drawable/ic_statistics.xml
@@ -4,29 +4,19 @@
     android:viewportWidth="24"
     android:viewportHeight="24">
     
-    <!-- 统计图标 - 柱状图 -->
+    <!-- 统计图标 - 饼图 -->
+    <!-- 圆环 -->
     <path
         android:fillColor="#FFFFFFFF"
-        android:pathData="M5,19 L5,9 C5,8.45 5.45,8 6,8 L8,8 C8.55,8 9,8.45 9,9 L9,19 C9,19.55 8.55,20 8,20 L6,20 C5.45,20 5,19.55 5,19 Z"/>
+        android:pathData="M12,2 C6.48,2 2,6.48 2,12 C2,17.52 6.48,22 12,22 C17.52,22 22,17.52 22,12 C22,6.48 17.52,2 12,2 Z M12,20 C7.59,20 4,16.41 4,12 C4,7.59 7.59,4 12,4 C16.41,4 20,7.59 20,12 C20,16.41 16.41,20 12,20 Z"/>
     
+    <!-- 扇形部分 -->
     <path
         android:fillColor="#FFFFFFFF"
-        android:pathData="M10,19 L10,5 C10,4.45 10.45,4 11,4 L13,4 C13.55,4 14,4.45 14,5 L14,19 C14,19.55 13.55,20 13,20 L11,20 C10.45,20 10,19.55 10,19 Z"/>
+        android:pathData="M12,12 L12,4 C16.41,4 20,7.59 20,12 L12,12 Z"/>
     
+    <!-- 小扇形 -->
     <path
         android:fillColor="#FFFFFFFF"
-        android:pathData="M15,19 L15,12 C15,11.45 15.45,11 16,11 L18,11 C18.55,11 19,11.45 19,12 L19,19 C19,19.55 18.55,20 18,20 L16,20 C15.45,20 15,19.55 15,19 Z"/>
-    
-    <!-- 趋势线 -->
-    <path
-        android:strokeColor="#FFFFFFFF"
-        android:strokeWidth="1.5"
-        android:strokeLineCap="round"
-        android:fillColor="#00000000"
-        android:pathData="M3,17 L7,13 L12,15 L17,9 L21,11"/>
-    
-    <!-- 箭头 -->
-    <path
-        android:fillColor="#FFFFFFFF"
-        android:pathData="M21,11 L19,9 L19,13 Z"/>
+        android:pathData="M12,12 L20,12 C20,14.5 19,16.8 17.3,18.3 L12,12 Z"/>
 </vector>