🎨ui: 优化Identity样式

OpenAuth.Identity/Views/Account/LoggedOut.cshtml

@@ -1,27 +1,28 @@
 @model OpenAuth.IdentityServer.Quickstart.Account.LoggedOutViewModel
 
-@{ 
-    // set this so the layout rendering sees an anonymous user
+@{
     ViewData["signed-out"] = true;
 }
 
-<div class="page-header logged-out">
-    <h1>
-        Logout
-        <small>You are now logged out</small>
-    </h1>
+<div class="auth-card">
+    <div class="auth-card-header">
+        <div class="status-icon status-icon--success">&#10004;</div>
+        <h1>已安全退出</h1>
+        <p>您已成功退出登录</p>
+    </div>
 
     @if (Model.PostLogoutRedirectUri != null)
     {
-        <div>
-            Click <a class="PostLogoutRedirectUri" href="@Model.PostLogoutRedirectUri">here</a> to return to the
-            <span>@Model.ClientName</span> application.
+        <div style="text-align: center;">
+            <a class="status-link" href="@Model.PostLogoutRedirectUri">
+                返回 @Model.ClientName &#8594;
+            </a>
         </div>
     }
 
     @if (Model.SignOutIframeUrl != null)
     {
-        <iframe width="0" height="0" class="signout" src="@Model.SignOutIframeUrl"></iframe>
+        <iframe class="signout-iframe" src="@Model.SignOutIframeUrl"></iframe>
     }
 </div>