diff --git a/static/index.html b/static/index.html
index 78f9789a..746b68dc 100644
--- a/static/index.html
+++ b/static/index.html
@@ -2827,14 +2827,13 @@ function renderStrategyTable(strategies) {
       })();
   };
   // ── 2026-08-17 备选区展开/折叠（老莫）──
-  window.toggleBackup = function(key) {
-    const body = document.getElementById('bk-body-' + key);
+    window.toggleBackup = function(key) {
+    const rows = document.querySelectorAll('[data-bk="' + key + '"]');
     const arrow = document.getElementById('bk-arrow-' + key);
-    if (body) {
-      const hidden = body.classList.contains('hidden');
-      body.classList.toggle('hidden');
-      if (arrow) arrow.textContent = hidden ? '▼' : '▶';
-    }
+    if (!rows.length) { if (arrow) arrow.textContent = '\u25b6'; return; }
+    const hidden = rows[0].classList.contains('hidden');
+    rows.forEach(r => r.classList.toggle('hidden'));
+    if (arrow) arrow.textContent = hidden ? '\u25bc' : '\u25b6';
   };
   // ── 2026-08-15 按市场×温区展示：6表格 = A股当前市 → 港股当前市 → A股其他2市 → 港股其他2市，
   //    每表格列出该市场在该温区有数据的所有可用策略（含未激活，按该温区胜率降序），激活策略高亮；温度并入当前市标题尾部