更新日报相关功能

backend/public/auth-callback.html

@@ -3,22 +3,41 @@
 <head>
   <meta charset="UTF-8" />
   <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+  <meta name="theme-color" content="#ffffff" />
   <title>正在完成登录…</title>
+  <link rel="preload" as="image" href="/loading.gif" />
   <style>
+    html, body { height: 100%; }
     body {
-      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
+      margin: 0;
       display: flex; align-items: center; justify-content: center;
-      min-height: 100vh; margin: 0; color: #5a6072; font-size: 14px;
-      background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
+      background: #fff;
     }
-    .box {
-      background: #fff; border-radius: 12px; padding: 32px 40px;
-      box-shadow: 0 20px 60px rgba(0,0,0,.2); text-align: center;
+    .loading-wrap {
+      display: flex;
+      flex-direction: column;
+      align-items: center;
+    }
+    .loading-gif {
+      display: block;
+      width: 160px;
+      max-width: 45vw;
+      height: auto;
+    }
+    .loading-text {
+      margin: 6px 0 0;
+      font-size: 14px;
+      color: #8a8f9c;
+      letter-spacing: 0.5px;
     }
   </style>
 </head>
 <body>
-  <div class="box">正在完成登录，请稍候…</div>
+  <!-- 登录回跳中转：仅做 code 转发，画面保持白底 + 居中 loading -->
+  <div class="loading-wrap">
+    <img class="loading-gif" src="/loading.gif" alt="登录中，请稍后…" />
+    <p class="loading-text">登录中，请稍后…</p>
+  </div>
   <script>
     /**
      * 统一认证中心回调中转页。