diff --git a/static/app.js b/static/app.js
index 6b5d573..ff0f0fd 100644
--- a/static/app.js
+++ b/static/app.js
@@ -174,13 +174,11 @@ function getPdfLink(p) {
 
 function openPdfBtn(btn) { openPdf(btn.dataset.pdf, btn.dataset.title); }
 
-async function openTrans(btn) {
+function openTrans(btn) {
   const url = btn.dataset.pdf;
-  try {
-    const resp = await fetch(url, { method: 'HEAD' });
-    if (resp.ok) { openPdf(url, btn.dataset.title); return; }
-  } catch(e) {}
-  alert('该论文译文尚未生成，请稍后再试');
+  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) ═══════════════
diff --git a/static/index.html b/static/index.html
index 0e6a2e4..a4c8337 100644
--- a/static/index.html
+++ b/static/index.html
@@ -207,13 +207,11 @@ function getPdfLink(p) {
 
 function openPdfBtn(btn) { openPdf(btn.dataset.pdf, btn.dataset.title); }
 
-async function openTrans(btn) {
+function openTrans(btn) {
   const url = btn.dataset.pdf;
-  try {
-    const resp = await fetch(url, { method: 'HEAD' });
-    if (resp.ok) { openPdf(url, btn.dataset.title); return; }
-  } catch(e) {}
-  alert('该论文译文尚未生成，请稍后再试');
+  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) ═══════════════