修复讲解详情播放器语言切换重复显示

src/pages/exhibit/detail.vue

@@ -209,17 +209,6 @@ const isCurrentDetailAudio = computed(() => globalAudioPlayer.isCurrentSource(cu
 const showAudioPlayer = computed(() => (
   globalAudioPlayer.visible.value && globalAudioPlayer.hasAudio.value
 ))
-const isDetailAudioDockVisible = computed(() => (
-  exhibit.value.audio.status === 'playable'
-  && !isCurrentDetailAudio.value
-))
-const audioDockTitle = computed(() => (
-  selectedAudioLanguage.value === 'en-US' ? 'English audio' : '中文讲解音频'
-))
-const audioDockSubtitle = computed(() => [
-  exhibit.value.title,
-  exhibit.value.audio.durationLabel
-].filter(Boolean).join(' · ') || '讲解音频')
 const isCurrentDetailAudioTarget = computed(() => {
   const source = globalAudioPlayer.currentSource.value
   const targetType = exhibit.value.audio.playTargetType || 'ITEM'
@@ -231,6 +220,15 @@ const isCurrentDetailAudioTarget = computed(() => {
     && source.targetId === targetId
   )
 })
+const isDetailAudioDockVisible = computed(() => (
+  exhibit.value.audio.status === 'playable'
+  && !isCurrentDetailAudioTarget.value
+))
+const audioDockTitle = computed(() => exhibit.value.title || '讲解内容')
+const audioDockSubtitle = computed(() => [
+  selectedAudioLanguage.value === 'en-US' ? 'English' : '中文',
+  exhibit.value.audio.durationLabel
+].filter(Boolean).join(' · ') || '讲解')
 // 讲解详情页只定位到所属展厅，不再追踪具体展品点位。
 const resolveHallGuidePoi = async () => {
   return guideUseCase.resolveContentLocationPreviewTarget({
@@ -1271,6 +1269,8 @@ const handleBack = () => {
 .detail-audio-main {
   min-width: 0;
   flex: 1;
+  padding-top: 18px;
+  box-sizing: border-box;
 }
 
 .detail-audio-title,