diff --git a/admin/dashboard/templates/index.html b/admin/dashboard/templates/index.html
index f191b58..79690a9 100644
--- a/admin/dashboard/templates/index.html
+++ b/admin/dashboard/templates/index.html
@@ -738,6 +738,7 @@
 
 {% block styles %}
 <style>
+    /* 基础卡片样式 */
     .stats-card {
         margin-bottom: 15px;
         height: 120px;
@@ -776,17 +777,19 @@
         border-radius: 50%;
         overflow: hidden;
         box-shadow: 0 2px 12px 0 rgba(0, 0, 0, 0.1);
-        display: flex;
-        align-items: center;
-        justify-content: center;
+        position: relative;
     }
     
     .user-avatar-container img {
-        width: 100% !important;
-        height: 100% !important;
-        object-fit: cover;
-        transform: scale(0.8);
-        transform-origin: center;
+        position: absolute;
+        top: 50%;
+        left: 50%;
+        transform: translate(-50%, -50%) scale(0.8);
+        width: auto !important;
+        height: auto !important;
+        max-width: 100%;
+        max-height: 100%;
+        object-fit: contain;
     }
     
     .user-info-column {