diff --git a/gateway/scripts/templates/dashboard.html b/gateway/scripts/templates/dashboard.html
index 8b73dbd..9d87076 100644
--- a/gateway/scripts/templates/dashboard.html
+++ b/gateway/scripts/templates/dashboard.html
@@ -262,7 +262,10 @@ document.getElementById('rdp-status-txt').textContent=fOn?'Connected':e4.rdp_ena
         // Update last refresh time
         if(lu){
           var ts=e5.last_refresh_iso;
-          lu.textContent=ts?('上次采集: '+ts.replace('T',' ').replace(/\+00:00$/,' UTC')):'—';
+          var d = new Date(ts);
+          var pad=function(n){return String(n).padStart(2,'0')};
+          lu.textContent='上次采集: '+d.getFullYear()+'-'+pad(d.getMonth()+1)+'-'+pad(d.getDate())
+            +' '+pad(d.getHours())+':'+pad(d.getMinutes())+':'+pad(d.getSeconds())+' CST';
         }
         // Render cards via innerHTML rebuild (simple data cards, no flicker risk)
         var html='';