diff --git a/css/index.css b/css/index.css
index 39076a6..1866921 100644
--- a/css/index.css
+++ b/css/index.css
@@ -2481,7 +2481,8 @@ html {
     padding: 0 8px;
     height: 50px !important;
     display: flex;
-    align-items: stretch;
+    align-items: center;
+    overflow: hidden;
   }
 
   #index .nav-header .nav-left {
@@ -2557,6 +2558,12 @@ html {
     margin: 0 !important;
     border: none !important;
     background: linear-gradient(135deg, #38BDF8 0%, #6366F1 100%) !important;
+    flex-shrink: 0 !important;
+  }
+
+  #index .no-login .btn.btn-normal#registBtn::before {
+    width: 12px !important;
+    height: 12px !important;
   }
 
   /* 汉堡菜单按钮样式 - 放在左侧（order: 3） */
@@ -3036,7 +3043,8 @@ html {
     padding: 0 10px;
     height: 48px !important;
     display: flex;
-    align-items: stretch;
+    align-items: center;
+    overflow: hidden;
   }
 
   #index .nav-header .nav-left {
@@ -3107,6 +3115,12 @@ html {
     margin: 0 !important;
     border: none !important;
     background: linear-gradient(135deg, #38BDF8 0%, #6366F1 100%) !important;
+    flex-shrink: 0 !important;
+  }
+
+  #index .no-login .btn.btn-normal#registBtn::before {
+    width: 12px !important;
+    height: 12px !important;
   }
 
   /* 汉堡菜单按钮样式 - 放在左侧（order: 3） */
@@ -3531,7 +3545,8 @@ html {
     padding: 0 8px;
     height: 44px !important;
     display: flex;
-    align-items: stretch;
+    align-items: center;
+    overflow: hidden;
   }
 
   #index .nav-header .nav-left {
@@ -3602,6 +3617,12 @@ html {
     margin: 0 !important;
     border: none !important;
     background: linear-gradient(135deg, #38BDF8 0%, #6366F1 100%) !important;
+    flex-shrink: 0 !important;
+  }
+
+  #index .no-login .btn.btn-normal#registBtn::before {
+    width: 10px !important;
+    height: 10px !important;
   }
 
   /* 汉堡菜单按钮样式 - 放在左侧（order: 3） */