diff --git a/resources/views/welcome.blade.php b/resources/views/welcome.blade.php
index f93229e..895d638 100644
--- a/resources/views/welcome.blade.php
+++ b/resources/views/welcome.blade.php
@@ -19,15 +19,16 @@
   }
 
   // 生产 SPA base 为 /admin/（与 ChannelEntryController、Vite BASE_URL 一致）
-  $participantLoginUrl = url('/admin/c/'.rawurlencode($slug).'/login');
-  $audienceLoginUrl = url('/admin/c/'.rawurlencode($slug).'/audience/login');
-  $homeUrl = url('/');
+  // 资源用根相对路径，避免 APP_URL 写成 https 后证书无效导致图片/样式全部加载失败。
+  $participantLoginUrl = '/admin/c/'.rawurlencode($slug).'/login';
+  $audienceLoginUrl = '/admin/c/'.rawurlencode($slug).'/audience/login';
+  $homeUrl = '/';
 
   $eventSitePath = public_path('frontend/event-site.html');
   abort_unless(File::isFile($eventSitePath), 503, '赛事官网原型 frontend/event-site.html 不存在');
 
   $html = File::get($eventSitePath);
-  $assetBase = rtrim(asset('frontend/assets'), '/');
+  $assetBase = '/frontend/assets';
 
   $html = str_replace(
       [