diff --git a/static/css/chat.css b/static/css/chat.css
index 11488ba..e226bf8 100644
--- a/static/css/chat.css
+++ b/static/css/chat.css
@@ -110,6 +110,7 @@ body { padding: 20px; height: 100vh; height: 100dvh; overflow: hidden; }
 .human-system-message { margin: 8px 0; text-align: center; color: var(--muted); font-size: 12px; }
 #input-text { flex: 1; min-width: 0; min-height: 38px; max-height: 170px; padding: 9px 1px; border: 0; background: transparent; color: var(--text); font-size: 1em; line-height: 1.6; resize: none; outline: none; }
 #input-text::placeholder { color: var(--muted); }
+#input-text:placeholder-shown { white-space: nowrap; overflow: hidden; }
 #send-button { min-width: 66px; height: 38px; flex-shrink: 0; padding: 0 15px; border: 0; border-radius: 8px; background: var(--brand); color: white; font-size: 12px; font-weight: 600; }
 #send-button:hover { background: var(--brand-hover); }
 #send-button.stop { background: var(--danger); }
diff --git a/static/js/chat.js b/static/js/chat.js
index d8fac14..d6b33ce 100644
--- a/static/js/chat.js
+++ b/static/js/chat.js
@@ -260,7 +260,7 @@ const I18N = {
         footerHuman: "联系人工",
         disclaimer: "报价与时效仅供参考，请以客服最终确认为准",
         keyboardHint: "Enter 发送 · Shift + Enter 换行",
-        inputShort: "输入问题、订单号或入仓码…",
+        inputShort: "输入问题…",
         uploading: "附件正在上传，请稍候…",
         uploadFailed: "附件上传失败，请重新选择文件",
         serviceUnavailable: "服务暂时不可用，请稍后重试，或联系人工客服。",
@@ -370,7 +370,7 @@ const I18N = {
         footerHuman: "Human support",
         disclaimer: "Quotes and transit times are subject to final confirmation",
         keyboardHint: "Enter to send · Shift + Enter for a new line",
-        inputShort: "Question or tracking number…",
+        inputShort: "Message…",
         uploading: "Uploading your attachment…",
         uploadFailed: "Upload failed. Please select the file again.",
         serviceUnavailable: "Service is temporarily unavailable. Please try again later or contact support.",