diff --git a/static/app.js b/static/app.js
index ff0f0fd..9d9eb2f 100644
--- a/static/app.js
+++ b/static/app.js
@@ -157,7 +157,7 @@ function renderPaper(p) {
   // Show translation button for ALL papers with arxiv or pdf
   const paperId = p.arxiv || (p.pdf ? p.pdf.split('/').pop().replace('.pdf','') : null);
   if (paperId) {
-    links.push('<button class="paper-link trans-btn" data-pdf="/papers/translated/' + paperId + '.pdf" data-title="' + p.title + ' [译文]" onclick="openTrans(this)">📖 译文</button>');
+    links.push('<button class="paper-link trans-btn" data-pdf="/papers/translated/' + paperId + '.pdf" data-title="' + p.title + ' [译文]" onclick="openPdfBtn(this)">📖 译文</button>');
   }
   return `<div class="paper-item"><div class="paper-year">${p.year||'—'}</div><div class="paper-body" id="${id}">
     <div class="paper-title">${p.title}</div>
@@ -174,13 +174,6 @@ function getPdfLink(p) {
 
 function openPdfBtn(btn) { openPdf(btn.dataset.pdf, btn.dataset.title); }
 
-function openTrans(btn) {
-  const url = btn.dataset.pdf;
-  const title = btn.dataset.title;
-  openPdf(url, title);
-  // If translation doesn't exist, the iframe will show error - user can see it
-}
-
 // ═══════════════ PDF VIEWER (状态条驱动) ═══════════════
 function getLocalPdfUrl(extUrl) {
   const am = extUrl.match(/arxiv\.org\/pdf\/(\d+\.\d+)/);
diff --git a/static/index.html b/static/index.html
index a4c8337..881e3b7 100644
--- a/static/index.html
+++ b/static/index.html
@@ -190,7 +190,7 @@ function renderPaper(p) {
   // Show translation button for ALL papers with arxiv or pdf
   const paperId = p.arxiv || (p.pdf ? p.pdf.split('/').pop().replace('.pdf','') : null);
   if (paperId) {
-    links.push('<button class="paper-link trans-btn" data-pdf="/papers/translated/' + paperId + '.pdf" data-title="' + p.title + ' [译文]" onclick="openTrans(this)">📖 译文</button>');
+    links.push('<button class="paper-link trans-btn" data-pdf="/papers/translated/' + paperId + '.pdf" data-title="' + p.title + ' [译文]" onclick="openPdfBtn(this)">📖 译文</button>');
   }
   return `<div class="paper-item"><div class="paper-year">${p.year||'—'}</div><div class="paper-body" id="${id}">
     <div class="paper-title">${p.title}</div>
@@ -207,13 +207,6 @@ function getPdfLink(p) {
 
 function openPdfBtn(btn) { openPdf(btn.dataset.pdf, btn.dataset.title); }
 
-function openTrans(btn) {
-  const url = btn.dataset.pdf;
-  const title = btn.dataset.title;
-  openPdf(url, title);
-  // If translation doesn't exist, the iframe will show error - user can see it
-}
-
 // ═══════════════ PDF VIEWER (状态条驱动) ═══════════════
 function getLocalPdfUrl(extUrl) {
   const am = extUrl.match(/arxiv\.org\/pdf\/(\d+\.\d+)/);