diff --git a/index.html b/index.html
index c6f3730..3a597c3 100644
--- a/index.html
+++ b/index.html
@@ -19,7 +19,7 @@
 <meta name="mobile-web-app-capable" content="yes">
 <meta name="apple-mobile-web-app-status-bar-style" content="default">
 <meta name="apple-mobile-web-app-title" content="经典诵读">
-<link rel="stylesheet" href="style.css?v=17">
+<link rel="stylesheet" href="style.css?v=18">
 </head>
 <body>
 
diff --git a/style.css b/style.css
index 1e54d8e..5eadc2f 100644
--- a/style.css
+++ b/style.css
@@ -151,7 +151,10 @@ body {
   box-shadow: 0 6px 16px rgba(158, 43, 37, 0.35);
   transition: transform 0.15s ease, box-shadow 0.15s ease;
 }
-.btn-play:hover { transform: scale(1.05); box-shadow: 0 8px 20px rgba(158, 43, 37, 0.45); }
+/* hover 仅在支持悬停的设备（鼠标）生效——手机点按后 :hover 会粘住，导致按钮保持放大 */
+@media (hover: hover) and (pointer: fine) {
+  .btn-play:hover { transform: scale(1.05); box-shadow: 0 8px 20px rgba(158, 43, 37, 0.45); }
+}
 .btn-play:active { transform: scale(0.97); }
 .btn-play:focus-visible { outline: 3px solid var(--gold); outline-offset: 3px; }
 .btn-play .icon { width: 24px; height: 24px; fill: currentColor; }
diff --git a/sw.js b/sw.js
index bd47567..e7717fe 100644
--- a/sw.js
+++ b/sw.js
@@ -4,7 +4,7 @@
  * - /api/tts 不拦截，直接透传网络
  */
 const CACHE = "fj-shell-v1";
-const SHELL = ["/", "/index.html", "/style.css?v=17", "/app.js?v=15", "/icon.svg", "/icon-180.png", "/icon-192.png", "/icon-512.png", "/manifest.json"];
+const SHELL = ["/", "/index.html", "/style.css?v=18", "/app.js?v=15", "/icon.svg", "/icon-180.png", "/icon-192.png", "/icon-512.png", "/manifest.json"];
 
 self.addEventListener("install", (e) => {
   e.waitUntil(caches.open(CACHE).then((c) => c.addAll(SHELL)).then(() => self.skipWaiting()));