fix

src/page-instrument/header-top/index.module.less

@@ -29,7 +29,10 @@
         height: 24px;
     }
 }
-
+.hidenBack{
+    opacity: 0;
+    pointer-events: none;
+}
 .headRight {
     display: flex;
     align-items: flex-end;

src/page-instrument/header-top/index.tsx

@@ -210,7 +210,7 @@ export default defineComponent({
 
 		/** 返回 */
 		const handleBack = () => {
-			emit('close')
+			emit("close");
 			// 不在APP中,
 			if (!storeData.isApp) {
 				window.close();
@@ -260,11 +260,9 @@ export default defineComponent({
 		return () => (
 			<>
 				<div class={[styles.headerTop]}>
-					{headTopData.showBack && (
-						<div class={[styles.back, "headTopBackBtn"]} onClick={handleBack}>
-							<img src={iconBack} />
-						</div>
-					)}
+					<div class={[styles.back, "headTopBackBtn", !headTopData.showBack && styles.hidenBack]} onClick={handleBack}>
+						<img src={iconBack} />
+					</div>
 					<Title text={state.examSongName} rightView={false} />
 
 					<div class={styles.headRight}>

src/page-instrument/view-detail/index.tsx

@@ -154,7 +154,7 @@ export default defineComponent({
 			// 如果是PC端,放大曲谱
 			state.platform = query.platform?.toLocaleUpperCase() || "";
 			if (state.platform === IPlatform.PC) {
-				state.zoom = 1.5;
+				state.zoom = query.zoom || 1.5;
 			}
 
 			//课堂乐器,默认简谱