diff --git a/src/layouts/default/components/Footer.vue b/src/layouts/default/components/Footer.vue
index 825e8049..d2d3cfd6 100644
--- a/src/layouts/default/components/Footer.vue
+++ b/src/layouts/default/components/Footer.vue
@@ -327,6 +327,17 @@ function handleDynamicMenuItemClick(item: DynamicButtonMenuItem) {
   pointer-events: none;
 }
 
+// 底部导航挂载在 body 上，而主题定制器与 Agent 面板受 .v-application 的层叠上下文限制，
+// 无法仅靠 z-index 压过它。移动端两者都是全屏面板，打开时直接隐藏底部导航。
+html[data-theme-customizer-open='true'],
+html[data-agent-assistant-open='true'] {
+  .footer-nav-container {
+    visibility: hidden;
+    opacity: 0;
+    pointer-events: none;
+  }
+}
+
 .footer-nav-group {
   display: flex;
   align-items: center;