diff --git a/app/frontend/m/css/features.css b/app/frontend/m/css/features.css
index 69c6de1..2fa98d4 100644
--- a/app/frontend/m/css/features.css
+++ b/app/frontend/m/css/features.css
@@ -137,6 +137,7 @@
   min-height: 0;
   overflow: auto;
   -webkit-overflow-scrolling: touch;
+  /* 有意用 pan-x pan-y：横滑看其余列，纵向滚动看长列表，二者共存不互斥 */
   touch-action: pan-x pan-y;
   overscroll-behavior: contain;
   background: var(--surface);
@@ -392,6 +393,12 @@
   bottom: 0;
   left: 0;
   z-index: 120;
+  /* 空根节点常驻 #m-app，关闭后不再拦截指针（否则会挡住顶栏/表格/底栏） */
+  pointer-events: none;
+}
+
+.m-sheet-root.is-open {
+  pointer-events: auto;
 }
 
 .m-sheet-backdrop {