diff --git a/src/app.js b/src/app.js
index 11472c9..a7f7fb2 100644
--- a/src/app.js
+++ b/src/app.js
@@ -532,13 +532,20 @@ setInterval(() => {
 
 
   // ---------- 阅读模式 ----------
+  function exitReadingMode() {
+    document.body.classList.remove("reading", "top-shown");
+    clearTimeout(readingHideTimer);
+    editor.contentEditable = "true";
+    editor.style.removeProperty("-webkit-user-modify");
+    editor.focus();
+  }
   function toggleReading() {
     const isReading = document.body.classList.toggle("reading");
     if (isReading) {
       editor.contentEditable = "false";
+      editor.style.setProperty("-webkit-user-modify", "read-only", "important");
     } else {
-      editor.contentEditable = "true";
-      editor.focus();
+      exitReadingMode();
     }
   }
 
@@ -908,9 +915,7 @@ setInterval(() => {
     }
   // Esc 退出阅读模式
     if (e.key === "Escape" && document.body.classList.contains("reading")) {
-      document.body.classList.remove("reading");
-      editor.contentEditable = "true";
-      editor.focus();
+      exitReadingMode();
     }
   });
 
@@ -924,11 +929,7 @@ setInterval(() => {
   const exitBtn = document.createElement("div");
   exitBtn.className = "reading-exit";
   exitBtn.textContent = "退出阅读 (Esc)";
-  exitBtn.addEventListener("click", () => {
-    document.body.classList.remove("reading");
-    editor.contentEditable = "true";
-    editor.focus();
-  });
+  exitBtn.addEventListener("click", exitReadingMode);
   document.body.appendChild(exitBtn);
 
   // 阅读模式下：鼠标/手指移到顶部才显示退出按钮
diff --git a/src/styles.css b/src/styles.css
index 7ed7f14..630e58b 100644
--- a/src/styles.css
+++ b/src/styles.css
@@ -333,6 +333,7 @@ body.reading .editor {
   cursor: default;
   -webkit-user-select: text;
   user-select: text;
+  -webkit-user-modify: read-only;
 }
 body.reading .topbar,
 body.reading .sidebar { transition: all 0.3s; }
@@ -356,7 +357,7 @@ body.reading .sidebar { transition: all 0.3s; }
 /* 阅读模式下默认隐藏，鼠标/手指移到顶部才浮现 */
 body.reading .reading-exit { opacity: 0; pointer-events: none; }
 body.reading.top-shown .reading-exit { opacity: 0.75; pointer-events: auto; }
-.reading-exit:hover { opacity: 1 !important; }
+body.reading .reading-exit:hover { opacity: 1 !important; }
 
 /* ---------- 移动端 ---------- */
 @media (max-width: 720px) {