fix: show contact info in QR payment popup

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

web/product-intro/gut-testing.html

@@ -536,23 +536,29 @@ function tryH5Pay(orderNo) {
 }
 
 function showQrCode(codeUrl, orderNo) {
+  var c = window._orderContact || {};
   var div = document.createElement('div');
   div.style.cssText = 'position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,0.5);z-index:1000;display:flex;align-items:center;justify-content:center';
   div.onclick = function(e) { if (e.target === this) this.remove(); };
-  div.innerHTML = '<div style="background:#fff;border-radius:16px;padding:2rem;text-align:center;max-width:320px">' +
-    '<h3 style="margin-bottom:0.5rem;font-size:1.1rem;">请使用微信扫码支付</h3>' +
-    '<div style="background:#f0fdfa;border-radius:8px;padding:0.8rem;margin-bottom:1rem;text-align:left">' +
+  div.innerHTML = '<div style="background:#fff;border-radius:16px;padding:2rem;text-align:center;max-width:340px">' +
+    '<h3 style="margin-bottom:0.8rem;font-size:1.1rem;">请使用微信扫码支付</h3>' +
+    '<div style="background:#f0fdfa;border-radius:8px;padding:0.8rem;margin-bottom:0.8rem;text-align:left">' +
       '<div style="font-size:0.85rem;color:var(--text-secondary);margin-bottom:0.3rem">肠道菌群基因检测</div>' +
-      '<div style="display:flex;justify-content:space-between;align-items:center">' +
+      '<div style="display:flex;justify-content:space-between;align-items:center;margin-bottom:0.3rem">' +
         '<span style="font-size:0.8rem;color:var(--text-muted)">1份 · 含采样套件</span>' +
         '<span style="font-size:1.1rem;font-weight:700;color:#0d9488">¥1,314</span>' +
       '</div>' +
+      '<div style="border-top:1px dashed #e2e8f0;margin:0.5rem 0;padding-top:0.5rem;font-size:0.8rem;color:var(--text-muted)">' +
+        '<div>联系人: ' + (c.name || '') + '</div>' +
+        '<div>手机号: ' + (c.phone || '') + '</div>' +
+        '<div>地址: ' + (c.address || '') + '</div>' +
+      '</div>' +
     '</div>' +
-    '<div style="width:200px;height:200px;margin:0 auto 1rem;display:flex;align-items:center;justify-content:center;border-radius:8px;overflow:hidden">' +
+    '<div style="width:200px;height:200px;margin:0 auto 0.8rem;display:flex;align-items:center;justify-content:center;border-radius:8px;overflow:hidden">' +
       '<img src="/api/payment/qrcode?text=' + encodeURIComponent(codeUrl) + '" alt="支付二维码" style="width:200px;height:200px">' +
     '</div>' +
     '<p style="font-size:0.8rem;color:#999">打开微信「扫一扫」完成支付</p>' +
-    '<button onclick="this.closest(\'div[style]\').remove()" style="margin-top:1rem;padding:0.5rem 2rem;border:1px solid #e2e8f0;border-radius:8px;background:#fff;cursor:pointer">取消支付</button>' +
+    '<button onclick="this.closest(\'div[style]\').remove()" style="margin-top:0.8rem;padding:0.5rem 2rem;border:1px solid #e2e8f0;border-radius:8px;background:#fff;cursor:pointer">取消支付</button>' +
     '</div>';
   document.body.appendChild(div);