diff --git a/app.py b/app.py
index 0187c5f..802ff26 100644
--- a/app.py
+++ b/app.py
@@ -96,7 +96,7 @@ except Exception as e:
 
 # 🚩 系統版本定義 (備份與顯示用)
 # 🚩 2026-05-01 V10.76: Move monthly analysis report onto V2 shell
-SYSTEM_VERSION = "V10.88"
+SYSTEM_VERSION = "V10.89"
 
 # ==========================================
 # 🔒 SQL Injection 防護函數
diff --git a/config.py b/config.py
index e58b87c..fdf3304 100644
--- a/config.py
+++ b/config.py
@@ -314,7 +314,7 @@ YOUTUBE_API_KEY = os.getenv('YOUTUBE_API_KEY', '')
 # ==========================================
 # 系統版本與路徑
 # ==========================================
-SYSTEM_VERSION = "V10.88"
+SYSTEM_VERSION = "V10.89"
 LOG_FILE_PATH = os.path.join(BASE_DIR, 'logs/system.log')
 public_url = PUBLIC_URL  # 用於模板顯示
 
diff --git a/templates/components/_ewoooc_shell.html b/templates/components/_ewoooc_shell.html
index 223ee4b..bfbeefe 100644
--- a/templates/components/_ewoooc_shell.html
+++ b/templates/components/_ewoooc_shell.html
@@ -41,10 +41,10 @@
     }
     .momo-logo-image {
         display: block;
-        width: min(168px, 100%);
+        width: 54px;
         height: 54px;
         object-fit: contain;
-        object-position: left center;
+        object-position: center center;
         border-radius: 8px;
     }
     .momo-logo-mark {
@@ -202,7 +202,7 @@
 
 <aside class="momo-sidebar" aria-label="主選單">
     <a class="momo-sidebar-logo" href="/">
-        <img class="momo-logo-image" src="{{ url_for('static', filename='images/ewoooc_logo_nav.png') }}" alt="EwoooC">
+        <img class="momo-logo-image" src="{{ url_for('static', filename='images/ewoooc_logo_badge.png') }}" alt="EwoooC">
     </a>
 
     <nav class="momo-nav momo-scroll">
diff --git a/web/static/css/ewoooc-shell.css b/web/static/css/ewoooc-shell.css
index f4ac47f..58bbb4b 100644
--- a/web/static/css/ewoooc-shell.css
+++ b/web/static/css/ewoooc-shell.css
@@ -37,10 +37,10 @@ body.momo-v2-body {
 
 .momo-logo-image {
   display: block;
-  width: min(168px, 100%);
+  width: 54px;
   height: 54px;
   object-fit: contain;
-  object-position: left center;
+  object-position: center center;
   border-radius: 8px;
 }
 
@@ -436,9 +436,9 @@ body.momo-v2-body {
   }
 
   .momo-logo-image {
-    width: 44px;
-    height: 44px;
-    object-fit: cover;
+    width: 48px;
+    height: 48px;
+    object-fit: contain;
     object-position: center center;
   }
 
@@ -508,10 +508,10 @@ body.momo-v2-body {
   }
 
   .momo-logo-image {
-    width: min(168px, 100%);
+    width: 54px;
     height: 54px;
     object-fit: contain;
-    object-position: left center;
+    object-position: center center;
   }
 
   .momo-status-card {