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 2cc27b9..40958df 100644
--- a/app/src/main/java/com/example/smarthome/ui/MainScaffold.kt
+++ b/app/src/main/java/com/example/smarthome/ui/MainScaffold.kt
@@ -157,16 +157,18 @@ fun OverviewRoomContent() {
             AirConditionerCard(modifier = Modifier.weight(1f), roomName = "全屋")
             UsageStatusChart(modifier = Modifier.weight(1f), roomName = "全屋")
         }
-        LightRow(modifier = Modifier.fillMaxWidth().padding(bottom = 16.dp), roomName = "全屋")
+        LightRow(modifier = Modifier.fillMaxWidth().padding(top = 16.dp, bottom = 16.dp), roomName = "全屋")
         ModeButtonsRow(onModeSelected = { })
         
+        Spacer(modifier = Modifier.height(24.dp))
+        
         // 显示所有房间的设备摘要
         Text(
             text = "所有设备",
             fontSize = 18.sp,
             fontWeight = FontWeight.Bold,
             color = Color.White,
-            modifier = Modifier.padding(vertical = 12.dp)
+            modifier = Modifier.padding(bottom = 12.dp)
         )
         AllDevicesOverview(modifier = Modifier.fillMaxSize())
     }
@@ -179,14 +181,16 @@ fun SpecificRoomContent(selectedRoom: Int, roomName: String) {
             AirConditionerCard(modifier = Modifier.weight(1f), roomName = roomName)
             UsageStatusChart(modifier = Modifier.weight(1f), roomName = roomName)
         }
-        LightRow(modifier = Modifier.fillMaxWidth().padding(bottom = 16.dp), roomName = roomName)
+        LightRow(modifier = Modifier.fillMaxWidth().padding(top = 16.dp, bottom = 16.dp), roomName = roomName)
+        
+        Spacer(modifier = Modifier.height(24.dp))
         
         Text(
             text = "$roomName 设备",
             fontSize = 18.sp,
             fontWeight = FontWeight.Bold,
             color = Color.White,
-            modifier = Modifier.padding(vertical = 12.dp)
+            modifier = Modifier.padding(bottom = 12.dp)
         )
         MyDevicesGrid(selectedRoom = selectedRoom, modifier = Modifier.fillMaxSize())
     }
@@ -673,31 +677,160 @@ fun AirConditionerCard(modifier: Modifier = Modifier, roomName: String = "房间
     var isOn by remember { mutableStateOf(true) }
     
     Box(modifier = modifier.height(220.dp).clip(RoundedCornerShape(24.dp)).background(Color(0x26121212)).padding(16.dp)) {
-        Column(verticalArrangement = Arrangement.spacedBy(12.dp)) {
+        Column(verticalArrangement = Arrangement.spacedBy(16.dp)) {
             Row(horizontalArrangement = Arrangement.SpaceBetween, verticalAlignment = Alignment.CenterVertically, modifier = Modifier.fillMaxWidth()) {
                 Column {
-                    Text(text = "空调", fontWeight = FontWeight.SemiBold, color = Color.White)
+                    Text(text = "空调", fontWeight = FontWeight.SemiBold, color = Color.White, fontSize = 18.sp)
                     Text(text = roomName, fontSize = 12.sp, color = Color(0xFF9AA0A6))
                 }
                 Switch(checked = isOn, onCheckedChange = { isOn = it })
             }
-            Text(text = "${temp.toInt()}°C", style = MaterialTheme.typography.headlineMedium, color = Color.White)
-            Slider(
+            
+            Row(
+                modifier = Modifier.fillMaxWidth(),
+                horizontalArrangement = Arrangement.SpaceBetween,
+                verticalAlignment = Alignment.CenterVertically
+            ) {
+                Text(
+                    text = "${temp.toInt()}°C",
+                    style = MaterialTheme.typography.headlineLarge,
+                    color = Color.White,
+                    fontWeight = FontWeight.Bold
+                )
+                
+                Row(horizontalArrangement = Arrangement.spacedBy(8.dp)) {
+                    // 降温按钮
+                    Box(
+                        modifier = Modifier
+                            .size(40.dp)
+                            .clip(RoundedCornerShape(12.dp))
+                            .background(Color(0x33FFFFFF))
+                            .clickable(enabled = isOn && temp > 16f) {
+                                if (temp > 16f) temp -= 1f
+                            },
+                        contentAlignment = Alignment.Center
+                    ) {
+                        Text(text = "−", color = Color.White, fontSize = 24.sp, fontWeight = FontWeight.Bold)
+                    }
+                    
+                    // 升温按钮
+                    Box(
+                        modifier = Modifier
+                            .size(40.dp)
+                            .clip(RoundedCornerShape(12.dp))
+                            .background(Color(0x33FFFFFF))
+                            .clickable(enabled = isOn && temp < 32f) {
+                                if (temp < 32f) temp += 1f
+                            },
+                        contentAlignment = Alignment.Center
+                    ) {
+                        Text(text = "+", color = Color.White, fontSize = 24.sp, fontWeight = FontWeight.Bold)
+                    }
+                }
+            }
+            
+            // 自定义滑动条
+            CustomSlider(
                 value = temp,
                 onValueChange = { temp = it },
                 valueRange = 16f..32f,
                 enabled = isOn
             )
-            Row(horizontalArrangement = Arrangement.spacedBy(12.dp)) {
-                Box(modifier = Modifier.size(36.dp).clip(RoundedCornerShape(10.dp)).background(Color(0x22121212)))
-                Box(modifier = Modifier.size(36.dp).clip(RoundedCornerShape(10.dp)).background(Color(0x22121212)))
-                Box(modifier = Modifier.size(36.dp).clip(RoundedCornerShape(10.dp)).background(Color(0x22121212)))
-                Box(modifier = Modifier.size(36.dp).clip(RoundedCornerShape(10.dp)).background(Color(0x22121212)))
+            
+            // 温度标记
+            Row(
+                modifier = Modifier.fillMaxWidth(),
+                horizontalArrangement = Arrangement.SpaceBetween
+            ) {
+                Text(text = "16°C", fontSize = 12.sp, color = Color(0xFF9AA0A6))
+                Text(text = "24°C", fontSize = 12.sp, color = Color(0xFF9AA0A6))
+                Text(text = "32°C", fontSize = 12.sp, color = Color(0xFF9AA0A6))
             }
         }
     }
 }
 
+@OptIn(androidx.compose.material3.ExperimentalMaterial3Api::class)
+@Composable
+fun CustomSlider(
+    value: Float,
+    onValueChange: (Float) -> Unit,
+    valueRange: ClosedFloatingPointRange<Float>,
+    enabled: Boolean = true
+) {
+    val interactionSource = remember { MutableInteractionSource() }
+    
+    Box(
+        modifier = Modifier
+            .fillMaxWidth()
+            .height(32.dp),
+        contentAlignment = Alignment.Center
+    ) {
+        Slider(
+            value = value,
+            onValueChange = onValueChange,
+            valueRange = valueRange,
+            enabled = enabled,
+            interactionSource = interactionSource,
+            colors = androidx.compose.material3.SliderDefaults.colors(
+                thumbColor = Color.White,
+                activeTrackColor = Brush.linearGradient(
+                    listOf(Color(0xFF00D1FF), Color(0xFFA9F0FF))
+                ).let { Color(0xFF00D1FF) },
+                inactiveTrackColor = Color(0x33FFFFFF),
+                disabledThumbColor = Color(0x66FFFFFF),
+                disabledActiveTrackColor = Color(0x33FFFFFF),
+                disabledInactiveTrackColor = Color(0x22FFFFFF)
+            ),
+            modifier = Modifier
+                .fillMaxWidth()
+                .height(24.dp),
+            thumb = {
+                Box(
+                    modifier = Modifier
+                        .size(20.dp)
+                        .shadow(4.dp, RoundedCornerShape(10.dp))
+                        .clip(RoundedCornerShape(10.dp))
+                        .background(Color.White)
+                )
+            },
+            track = { sliderState ->
+                val fraction = (sliderState.value - valueRange.start) / (valueRange.endInclusive - valueRange.start)
+                Box(
+                    modifier = Modifier
+                        .fillMaxWidth()
+                        .height(6.dp)
+                        .clip(RoundedCornerShape(3.dp))
+                ) {
+                    // 未激活轨道
+                    Box(
+                        modifier = Modifier
+                            .fillMaxSize()
+                            .background(if (enabled) Color(0x33FFFFFF) else Color(0x22FFFFFF))
+                    )
+                    // 激活轨道
+                    Box(
+                        modifier = Modifier
+                            .fillMaxWidth(fraction)
+                            .fillMaxHeight()
+                            .background(
+                                if (enabled) {
+                                    Brush.linearGradient(
+                                        listOf(Color(0xFF00D1FF), Color(0xFFA9F0FF))
+                                    )
+                                } else {
+                                    Brush.linearGradient(
+                                        listOf(Color(0x33FFFFFF), Color(0x33FFFFFF))
+                                    )
+                                }
+                            )
+                    )
+                }
+            }
+        )
+    }
+}
+
 @Composable
 fun LightList(modifier: Modifier = Modifier) {
     val lights = listOf(
@@ -722,12 +855,39 @@ fun LightList(modifier: Modifier = Modifier) {
 }
 
 @Composable
-fun DotsProgress(percent: Float) {
+fun DotsProgress(percent: Float, onPercentChange: (Float) -> Unit = {}, enabled: Boolean = true) {
     val total = 12
-    Row(horizontalArrangement = Arrangement.spacedBy(4.dp), verticalAlignment = Alignment.CenterVertically) {
+    Row(
+        horizontalArrangement = Arrangement.spacedBy(4.dp),
+        verticalAlignment = Alignment.CenterVertically,
+        modifier = Modifier.pointerInput(enabled) {
+            if (enabled) {
+                detectTapGestures { offset ->
+                    // 计算点击的是第几个点
+                    val dotWidth = 6.dp.toPx()
+                    val spacing = 4.dp.toPx()
+                    val totalWidth = (dotWidth + spacing) * total - spacing
+                    val clickedIndex = ((offset.x / totalWidth) * total).toInt().coerceIn(0, total - 1)
+                    // 更新百分比
+                    val newPercent = (clickedIndex + 1).toFloat() / total
+                    onPercentChange(newPercent)
+                }
+            }
+        }
+    ) {
         repeat(total) { i ->
             val filled = i < (percent * total).toInt()
-            Box(modifier = Modifier.size(6.dp).clip(RoundedCornerShape(3.dp)).background(if (filled) Color(0xFFA9F0FF) else Color(0xFF3A3A3A)))
+            Box(
+                modifier = Modifier
+                    .size(8.dp)
+                    .clip(RoundedCornerShape(4.dp))
+                    .background(if (filled) Color(0xFFA9F0FF) else Color(0xFF3A3A3A))
+                    .clickable(enabled = enabled) {
+                        // 点击某个点直接设置到该亮度
+                        val newPercent = (i + 1).toFloat() / total
+                        onPercentChange(newPercent)
+                    }
+            )
         }
     }
 }
@@ -903,13 +1063,70 @@ fun LightRow(modifier: Modifier = Modifier, roomName: String = "房间") {
 
 @Composable
 fun LightCard(name: String, percent: Float, modifier: Modifier = Modifier) {
+    var brightness by remember { mutableStateOf(percent) }
+    
     Box(modifier = modifier.height(100.dp).clip(RoundedCornerShape(16.dp)).background(Color(0x26121212)).padding(12.dp)) {
         Row(horizontalArrangement = Arrangement.SpaceBetween, verticalAlignment = Alignment.CenterVertically, modifier = Modifier.fillMaxWidth()) {
             Row(horizontalArrangement = Arrangement.spacedBy(12.dp), verticalAlignment = Alignment.CenterVertically) {
-                Box(modifier = Modifier.size(36.dp).clip(RoundedCornerShape(10.dp)).background(Color(0x22121212)))
-                Column { Text(text = name); Text(text = "${(percent * 100).toInt()}%", color = Color(0xFF9AA0A6)) }
+                // 灯光图标 - 带发光效果
+                Box(
+                    modifier = Modifier
+                        .size(40.dp)
+                        .shadow(
+                            elevation = if (brightness > 0.3f) (brightness * 12).dp else 0.dp,
+                            shape = RoundedCornerShape(12.dp),
+                            spotColor = Color(0xFFFFD54F).copy(alpha = brightness * 0.6f)
+                        )
+                        .clip(RoundedCornerShape(12.dp))
+                        .background(
+                            if (brightness > 0.1f) {
+                                Brush.radialGradient(
+                                    colors = listOf(
+                                        Color(0xFFFFE082).copy(alpha = brightness),
+                                        Color(0xFFFFD54F).copy(alpha = brightness * 0.9f),
+                                        Color(0xFFFF8F00).copy(alpha = brightness * 0.7f)
+                                    ),
+                                    radius = 60f
+                                )
+                            } else {
+                                Brush.linearGradient(
+                                    listOf(
+                                        Color(0xFF3A3A3A),
+                                        Color(0xFF2A2A2A)
+                                    )
+                                )
+                            }
+                        ),
+                    contentAlignment = Alignment.Center
+                ) {
+                    Image(
+                        painter = painterResource(id = R.drawable.ic_light),
+                        contentDescription = "灯光",
+                        modifier = Modifier.size(24.dp),
+                        colorFilter = androidx.compose.ui.graphics.ColorFilter.tint(
+                            if (brightness > 0.1f) {
+                                Color.White.copy(alpha = 0.95f)
+                            } else {
+                                Color(0xFF666666)
+                            }
+                        )
+                    )
+                }
+                Column { 
+                    Text(text = name, color = Color.White, fontWeight = FontWeight.Medium)
+                    Text(
+                        text = "${(brightness * 100).toInt()}%", 
+                        color = if (brightness > 0.1f) Color(0xFFFFD54F) else Color(0xFF9AA0A6), 
+                        fontSize = 13.sp,
+                        fontWeight = if (brightness > 0.5f) FontWeight.Medium else FontWeight.Normal
+                    ) 
+                }
             }
-            DotsProgress(percent)
+            DotsProgress(
+                percent = brightness,
+                onPercentChange = { brightness = it },
+                enabled = true
+            )
         }
     }
 }
diff --git a/app/src/main/res/drawable/ic_light.xml b/app/src/main/res/drawable/ic_light.xml
index 92c766e..ca7bace 100644
--- a/app/src/main/res/drawable/ic_light.xml
+++ b/app/src/main/res/drawable/ic_light.xml
@@ -1,4 +1,22 @@
-<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 L15,10 L9,10 Z"/>
-    <path android:strokeColor="#FFFFFFFF" android:strokeWidth="2" android:fillColor="#00000000" android:pathData="M10,14 L14,14 L14,21 L10,21 Z"/>
+<vector xmlns:android="http://schemas.android.com/apk/res/android" 
+    android:width="24dp" 
+    android:height="24dp" 
+    android:viewportWidth="24" 
+    android:viewportHeight="24">
+    
+    <!-- 灯泡主体 -->
+    <path 
+        android:fillColor="#FFFFFFFF"
+        android:pathData="M12,2 C8.69,2 6,4.69 6,8 C6,10.5 7.5,12.67 9.5,13.67 L9.5,17 C9.5,17.83 10.17,18.5 11,18.5 L13,18.5 C13.83,18.5 14.5,17.83 14.5,17 L14.5,13.67 C16.5,12.67 18,10.5 18,8 C18,4.69 15.31,2 12,2 Z"/>
+    
+    <!-- 灯泡底座 -->
+    <path 
+        android:fillColor="#FFFFFFFF"
+        android:pathData="M10,19.5 L14,19.5 L14,20.5 C14,21.33 13.33,22 12.5,22 L11.5,22 C10.67,22 10,21.33 10,20.5 Z"/>
+    
+    <!-- 灯泡高光效果 -->
+    <path 
+        android:fillColor="#FFFFFF"
+        android:fillAlpha="0.4"
+        android:pathData="M9,6 C9,4.34 10.34,3 12,3 C12.55,3 13.05,3.15 13.5,3.4 C12.95,3.15 12.35,3 11.7,3 C10.21,3 9,4.21 9,5.7 C9,6.8 9.5,7.77 10.3,8.4 C9.5,7.6 9,6.37 9,6 Z"/>
 </vector>