修复讲解播放器显示和展厅间隔

src/components/audio/AudioPlayer.vue

@@ -727,7 +727,7 @@ defineExpose({
   left: 50%;
   right: auto;
   bottom: calc(12px + env(safe-area-inset-bottom));
-  z-index: 2200;
+  z-index: 2210;
   width: calc(min(100vw, 430px) - 28px);
   box-sizing: border-box;
   transform: translateX(-50%);

src/components/explain/ExplainHallSelect.vue

@@ -446,7 +446,7 @@ const handleBack = () => {
 
 .hall-overview-list {
   height: 100%;
-  gap: 5px;
+  gap: 0;
 }
 
 .explain-scroll.unit-stage .hall-list,

src/pages/exhibit/detail.vue

@@ -693,8 +693,6 @@ const fallbackToExplainHome = () => {
 }
 
 const handleBack = () => {
-  globalAudioPlayer.close()
-
   if (typeof window !== 'undefined' && window.history.length > 1) {
     const currentHref = window.location.href
     window.history.back()