diff --git a/frontend/src/pages/admin/AdminDashboard.tsx b/frontend/src/pages/admin/AdminDashboard.tsx
index a28c233..94b1845 100644
--- a/frontend/src/pages/admin/AdminDashboard.tsx
+++ b/frontend/src/pages/admin/AdminDashboard.tsx
@@ -66,9 +66,9 @@ function ProgressBar({ a, b, c, total, labels, d }: {
 
 // ─── 滞留时间 SLA 预警颜色 ────────────────────────────────
 function durationColor(h: number) {
-  if (h >= 24) return "text-red-600 bg-red-100 font-bold";   // 超24h 危险
-  if (h >= 12) return "text-orange-600 bg-orange-50";         // 12-24h 警告
-  return "text-emerald-600 bg-emerald-50";                    // <12h 正常
+  if (h >= 48) return "text-red-600 bg-red-100 font-bold";
+  if (h >= 24) return "text-orange-600 bg-orange-50";
+  return "text-emerald-600 bg-emerald-50";
 }
 function durationLabel(h: number) {
   if (h >= 48) return `${Math.round(h / 24)}天`;