diff --git a/static/index.html b/static/index.html
index 77d11044..129308cb 100644
--- a/static/index.html
+++ b/static/index.html
@@ -167,7 +167,7 @@ body { background: #0f0f13; color: #e2e8f0; }
 </div>
 
 <!-- 浮动异常区（右上角，任何板块可见，2026-08-12 老莫指示） -->
-<div id="alertFloat" class="collapsed" onclick="toggleAlertFloat(event)">
+<div id="alertFloat" class="collapsed" style="display:none" onclick="toggleAlertFloat(event)">
   <div class="alert-head">
     <span class="alert-title">⚠️ 异常 <span id="alertCount" class="alert-count" style="display:none">0</span></span>
     <span class="alert-toggle">▾</span>
@@ -2694,15 +2694,19 @@ function renderAlerts(alerts) {
   const keys = shown.map(a => a.ts + '_' + a.source + '_' + a.code).join('|');
 
   if (!shown.length) {
+    // 无异常 → 整个浮窗隐藏（2026-08-13 老莫反馈：无异常不应显示红底感叹号）
+    el.style.display = 'none';
     el.classList.add('collapsed');
     body.style.display = 'none';
-    el.querySelector('.alert-toggle').textContent = '▾';
     countEl.style.display = 'none';
     countEl.textContent = '0';
     lastAlertKeys = '';
     return;
   }
 
+  // 有异常 → 显示浮窗
+  el.style.display = '';
+
   // 新异常 → 自动展开几秒后折叠
   const isNew = keys !== lastAlertKeys;
   lastAlertKeys = keys;