fix: 原地切换文本，林肯补中文

docs/js/quote-translate.js

@@ -1,13 +1,22 @@
 document.addEventListener('DOMContentLoaded', function () {
   document.querySelectorAll('blockquote[data-cn]').forEach(function (el) {
     const cn = el.getAttribute('data-cn');
-    const tip = document.createElement('div');
-    tip.className = 'quote-cn';
-    tip.textContent = cn;
-    el.appendChild(tip);
+    // 找第一个文本节点（引言正文），存原文
+    const textNode = Array.from(el.childNodes).find(n => n.nodeType === Node.TEXT_NODE && n.textContent.trim());
+    if (!textNode) return;
+    const original = textNode.textContent;
+    let showing = 'orig';
 
-    el.addEventListener('mouseenter', () => tip.classList.add('show'));
-    el.addEventListener('mouseleave', () => tip.classList.remove('show'));
-    el.addEventListener('click', () => tip.classList.toggle('show'));
+    function swap(to) {
+      textNode.textContent = to === 'cn' ? cn + '\n' : original;
+      showing = to;
+    }
+
+    el.addEventListener('mouseenter', () => swap('cn'));
+    el.addEventListener('mouseleave', () => swap('orig'));
+    el.addEventListener('click', (e) => {
+      e.preventDefault();
+      swap(showing === 'orig' ? 'cn' : 'orig');
+    });
   });
 });

docs/shared/new-saas-revolution.md

@@ -45,7 +45,7 @@ I have a dream, today.
 
 ---
 
-<blockquote>
+<blockquote data-cn="民有、民治、民享。">
 of the people, by the people, for the people.
 
 — 林肯