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 bdbf4b0..e495955 100644
--- a/app/src/main/java/com/example/smarthome/ui/MainScaffold.kt
+++ b/app/src/main/java/com/example/smarthome/ui/MainScaffold.kt
@@ -371,15 +371,24 @@ fun RoomTab(
     selected: Boolean,
     onClick: () -> Unit
 ) {
-    val base = Modifier.clip(RoundedCornerShape(20.dp))
-    val mod = if (selected) {
-        base.background(brush = Brush.linearGradient(listOf(Color(0xFFA9F0FF), Color(0xFFB89CFF))))
-    } else {
-        base.background(color = Color(0x50121212))
-    }
+    val shape = RoundedCornerShape(20.dp)
     
     Box(
-        modifier = mod
+        modifier = Modifier
+            .clip(shape)
+            .then(
+                if (selected) {
+                    Modifier.background(brush = Brush.linearGradient(listOf(Color(0xFFA9F0FF), Color(0xFFB89CFF))))
+                } else {
+                    Modifier
+                        .background(Color(0xFF1E2530).copy(alpha = 0.8f))
+                        .border(
+                            width = 1.dp,
+                            color = Color.White.copy(alpha = 0.15f),
+                            shape = shape
+                        )
+                }
+            )
             .clickable { onClick() }
             .padding(horizontal = 14.dp, vertical = 10.dp)
     ) {
@@ -417,7 +426,12 @@ fun DeviceCard(d: Device, roomName: String = "") {
         modifier = Modifier
             .fillMaxWidth()
             .clip(RoundedCornerShape(16.dp))
-            .background(Color(0x40121212))
+            .background(Color(0xFF1E2530).copy(alpha = 0.85f))
+            .border(
+                width = 1.dp,
+                color = Color.White.copy(alpha = 0.15f),
+                shape = RoundedCornerShape(16.dp)
+            )
             .padding(12.dp),
         verticalAlignment = Alignment.CenterVertically,
         horizontalArrangement = Arrangement.spacedBy(12.dp)
@@ -1239,13 +1253,11 @@ fun UsageStatusChart(modifier: Modifier = Modifier, roomName: String = "房间")
         modifier = modifier
             .height(260.dp)
             .clip(RoundedCornerShape(24.dp))
-            .background(
-                Brush.verticalGradient(
-                    colors = listOf(
-                        accentColor.copy(alpha = 0.15f),
-                        Color(0xFF1A1A2E).copy(alpha = 0.9f)
-                    )
-                )
+            .background(Color(0xFF1E2530).copy(alpha = 0.85f))
+            .border(
+                width = 1.dp,
+                color = Color.White.copy(alpha = 0.15f),
+                shape = RoundedCornerShape(24.dp)
             )
             .padding(16.dp)
     ) {
@@ -1530,16 +1542,11 @@ fun AirConditionerCard(modifier: Modifier = Modifier, roomName: String = "房间
         modifier = modifier
             .height(260.dp)
             .clip(RoundedCornerShape(24.dp))
-            .background(
-                Brush.verticalGradient(
-                    colors = if (isOn) listOf(
-                        accentColor.copy(alpha = 0.3f),
-                        Color(0xFF1A1A2E).copy(alpha = 0.9f)
-                    ) else listOf(
-                        Color(0xFF2A2A3E).copy(alpha = 0.6f),
-                        Color(0xFF1A1A2E).copy(alpha = 0.9f)
-                    )
-                )
+            .background(Color(0xFF1E2530).copy(alpha = 0.85f))
+            .border(
+                width = 1.dp,
+                color = Color.White.copy(alpha = 0.15f),
+                shape = RoundedCornerShape(24.dp)
             )
             .padding(16.dp)
     ) {
@@ -2009,7 +2016,13 @@ fun ModeButton(
                             shape = shape
                         )
                 } else {
-                    Modifier.background(Color(0x50121212))
+                    Modifier
+                        .background(Color(0xFF1E2530).copy(alpha = 0.85f))
+                        .border(
+                            width = 1.dp,
+                            color = Color.White.copy(alpha = 0.15f),
+                            shape = shape
+                        )
                 }
             )
             .clickable(indication = null, interactionSource = interaction) {
@@ -2131,7 +2144,18 @@ fun LightRow(modifier: Modifier = Modifier, roomName: String = "房间") {
 fun LightCard(name: String, percent: Float, modifier: Modifier = Modifier) {
     var brightness by remember { mutableStateOf(percent) }
     
-    Box(modifier = modifier.height(72.dp).clip(RoundedCornerShape(16.dp)).background(Color(0x50121212)).padding(horizontal = 12.dp, vertical = 8.dp)) {
+    Box(
+        modifier = modifier
+            .height(72.dp)
+            .clip(RoundedCornerShape(16.dp))
+            .background(Color(0xFF1E2530).copy(alpha = 0.85f))
+            .border(
+                width = 1.dp,
+                color = Color.White.copy(alpha = 0.15f),
+                shape = RoundedCornerShape(16.dp)
+            )
+            .padding(horizontal = 12.dp, vertical = 8.dp)
+    ) {
         Row(horizontalArrangement = Arrangement.SpaceBetween, verticalAlignment = Alignment.CenterVertically, modifier = Modifier.fillMaxWidth()) {
             Row(horizontalArrangement = Arrangement.spacedBy(12.dp), verticalAlignment = Alignment.CenterVertically) {
                 // 灯光图标 - 带发光效果
diff --git a/app/src/main/res/drawable/room_wallpaper_default.png b/app/src/main/res/drawable/room_wallpaper_default.png
index fbdbe16..fa6c334 100644
Binary files a/app/src/main/res/drawable/room_wallpaper_default.png and b/app/src/main/res/drawable/room_wallpaper_default.png differ