diff --git a/lifelog-recorder/app/src/main/res/drawable/ic_launcher_background.xml b/lifelog-recorder/app/src/main/res/drawable/ic_launcher_background.xml
index 05afead..688d062 100644
--- a/lifelog-recorder/app/src/main/res/drawable/ic_launcher_background.xml
+++ b/lifelog-recorder/app/src/main/res/drawable/ic_launcher_background.xml
@@ -1,9 +1,8 @@
 <?xml version="1.0" encoding="utf-8"?>
 <shape xmlns:android="http://schemas.android.com/apk/res/android">
     <gradient
-        android:startColor="#1A0A3C"
-        android:centerColor="#3D1580"
-        android:endColor="#7C3AED"
+        android:startColor="#C62828"
+        android:endColor="#FF5252"
         android:type="linear"
-        android:angle="135"/>
+        android:angle="315"/>
 </shape>
diff --git a/lifelog-recorder/app/src/main/res/drawable/ic_launcher_foreground.xml b/lifelog-recorder/app/src/main/res/drawable/ic_launcher_foreground.xml
index 4f42005..f28d3c1 100644
--- a/lifelog-recorder/app/src/main/res/drawable/ic_launcher_foreground.xml
+++ b/lifelog-recorder/app/src/main/res/drawable/ic_launcher_foreground.xml
@@ -1,70 +1,99 @@
 <?xml version="1.0" encoding="utf-8"?>
-<!-- Adaptive icon foreground: 108×108dp, safe zone center 72×72dp (坐标 18–90).
-     设计：白色麦克风（胶囊体 + 弧形支架 + 底座）+ 右上角红色录制圆点。 -->
+<!--
+  人际关系网络图标（108×108dp viewport，safe zone 18–90）
+  布局：中央大节点（"我"）+ 4个卫星节点（上/右/下/左），白色连线+节点，
+  中央节点内嵌红色人物轮廓（圆形头 + 肩线），卫星节点为纯白圆。
+-->
 <vector xmlns:android="http://schemas.android.com/apk/res/android"
     android:width="108dp"
     android:height="108dp"
     android:viewportWidth="108"
     android:viewportHeight="108">
 
-    <!-- 麦克风胶囊体 -->
-    <path
-        android:pathData="M54,28 C47.4,28 42,33.4 42,40 L42,60 C42,66.6 47.4,72 54,72 C60.6,72 66,66.6 66,60 L66,40 C66,33.4 60.6,28 54,28Z"
-        android:fillColor="#FFFFFF"/>
-
-    <!-- 胶囊体内部纹路（3条横线，代表声波/录音） -->
-    <path
-        android:pathData="M48,44 L60,44"
-        android:strokeColor="#7C3AED"
-        android:strokeWidth="2.5"
-        android:strokeLineCap="round"
+    <!-- ── 连线（在节点层之下，白色半透明） ── -->
+    <!-- 中央 → 上 -->
+    <path android:pathData="M54,39 L54,31"
+        android:strokeColor="#FFFFFF" android:strokeWidth="3.5"
+        android:strokeAlpha="0.75" android:strokeLineCap="round"
         android:fillColor="#00000000"/>
-    <path
-        android:pathData="M47,50 L61,50"
-        android:strokeColor="#7C3AED"
-        android:strokeWidth="2.5"
-        android:strokeLineCap="round"
+    <!-- 中央 → 右 -->
+    <path android:pathData="M69,54 L79,54"
+        android:strokeColor="#FFFFFF" android:strokeWidth="3.5"
+        android:strokeAlpha="0.75" android:strokeLineCap="round"
         android:fillColor="#00000000"/>
-    <path
-        android:pathData="M48,56 L60,56"
-        android:strokeColor="#7C3AED"
-        android:strokeWidth="2.5"
-        android:strokeLineCap="round"
+    <!-- 中央 → 下 -->
+    <path android:pathData="M54,69 L54,77"
+        android:strokeColor="#FFFFFF" android:strokeWidth="3.5"
+        android:strokeAlpha="0.75" android:strokeLineCap="round"
         android:fillColor="#00000000"/>
-
-    <!-- 弧形支架 -->
-    <path
-        android:pathData="M36,60 C36,74.4 44.3,84 54,84 C63.7,84 72,74.4 72,60"
-        android:strokeColor="#FFFFFF"
-        android:strokeWidth="4.5"
-        android:strokeLineCap="round"
+    <!-- 中央 → 左 -->
+    <path android:pathData="M39,54 L29,54"
+        android:strokeColor="#FFFFFF" android:strokeWidth="3.5"
+        android:strokeAlpha="0.75" android:strokeLineCap="round"
         android:fillColor="#00000000"/>
-
-    <!-- 竖茎 -->
-    <path
-        android:pathData="M54,84 L54,92"
-        android:strokeColor="#FFFFFF"
-        android:strokeWidth="4.5"
-        android:strokeLineCap="round"
+    <!-- 次级连线：上 → 右（让图更像真实网络） -->
+    <path android:pathData="M62,23 L80,46"
+        android:strokeColor="#FFFFFF" android:strokeWidth="2"
+        android:strokeAlpha="0.45" android:strokeLineCap="round"
         android:fillColor="#00000000"/>
-
-    <!-- 底座横线 -->
-    <path
-        android:pathData="M44,92 L64,92"
-        android:strokeColor="#FFFFFF"
-        android:strokeWidth="4.5"
-        android:strokeLineCap="round"
+    <!-- 次级连线：下 → 左 -->
+    <path android:pathData="M46,85 L28,62"
+        android:strokeColor="#FFFFFF" android:strokeWidth="2"
+        android:strokeAlpha="0.45" android:strokeLineCap="round"
         android:fillColor="#00000000"/>
 
-    <!-- 录制状态红点（右上角） -->
-    <path
-        android:pathData="M72,22 m-8,0 a8,8 0 1,0 16,0 a8,8 0 1,0 -16,0"
-        android:fillColor="#FF3B30"/>
+    <!-- ── 卫星节点（白色实心圆，r=10） ── -->
+    <!-- 上 -->
+    <path android:pathData="M54,21 m-10,0 a10,10 0 1,0 20,0 a10,10 0 1,0 -20,0"
+        android:fillColor="#FFFFFF"/>
+    <!-- 右 -->
+    <path android:pathData="M89,54 m-10,0 a10,10 0 1,0 20,0 a10,10 0 1,0 -20,0"
+        android:fillColor="#FFFFFF"/>
+    <!-- 下 -->
+    <path android:pathData="M54,87 m-10,0 a10,10 0 1,0 20,0 a10,10 0 1,0 -20,0"
+        android:fillColor="#FFFFFF"/>
+    <!-- 左 -->
+    <path android:pathData="M19,54 m-10,0 a10,10 0 1,0 20,0 a10,10 0 1,0 -20,0"
+        android:fillColor="#FFFFFF"/>
+
+    <!-- 卫星节点内小人（头+肩，红色）以"上"节点为例，其他类似 -->
+    <!-- 上节点人物头 -->
+    <path android:pathData="M54,18 m-3.5,0 a3.5,3.5 0 1,0 7,0 a3.5,3.5 0 1,0 -7,0"
+        android:fillColor="#C62828"/>
+    <!-- 上节点人物肩 -->
+    <path android:pathData="M49,25 C49,22.5 51.2,21 54,21 C56.8,21 59,22.5 59,25 Z"
+        android:fillColor="#C62828"/>
+
+    <!-- 右节点人物头 -->
+    <path android:pathData="M89,51 m-3.5,0 a3.5,3.5 0 1,0 7,0 a3.5,3.5 0 1,0 -7,0"
+        android:fillColor="#C62828"/>
+    <!-- 右节点人物肩 -->
+    <path android:pathData="M84,58 C84,55.5 86.2,54 89,54 C91.8,54 94,55.5 94,58 Z"
+        android:fillColor="#C62828"/>
+
+    <!-- 下节点人物头 -->
+    <path android:pathData="M54,84 m-3.5,0 a3.5,3.5 0 1,0 7,0 a3.5,3.5 0 1,0 -7,0"
+        android:fillColor="#C62828"/>
+    <!-- 下节点人物肩 -->
+    <path android:pathData="M49,91 C49,88.5 51.2,87 54,87 C56.8,87 59,88.5 59,91 Z"
+        android:fillColor="#C62828"/>
+
+    <!-- 左节点人物头 -->
+    <path android:pathData="M19,51 m-3.5,0 a3.5,3.5 0 1,0 7,0 a3.5,3.5 0 1,0 -7,0"
+        android:fillColor="#C62828"/>
+    <!-- 左节点人物肩 -->
+    <path android:pathData="M14,58 C14,55.5 16.2,54 19,54 C21.8,54 24,55.5 24,58 Z"
+        android:fillColor="#C62828"/>
+
+    <!-- ── 中央大节点（白色实心圆，r=15） ── -->
+    <path android:pathData="M54,54 m-15,0 a15,15 0 1,0 30,0 a15,15 0 1,0 -30,0"
+        android:fillColor="#FFFFFF"/>
 
-    <!-- 红点高光（让圆点更立体） -->
-    <path
-        android:pathData="M70,18 m-3,0 a3,3 0 1,0 6,0 a3,3 0 1,0 -6,0"
-        android:fillColor="#FF8080"
-        android:fillAlpha="0.5"/>
+    <!-- 中央节点内人物头（红色，r=5.5） -->
+    <path android:pathData="M54,49 m-5.5,0 a5.5,5.5 0 1,0 11,0 a5.5,5.5 0 1,0 -11,0"
+        android:fillColor="#C62828"/>
+    <!-- 中央节点内人物肩（红色） -->
+    <path android:pathData="M44,62 C44,57.5 48.5,54.5 54,54.5 C59.5,54.5 64,57.5 64,62 Z"
+        android:fillColor="#C62828"/>
 
 </vector>