diff --git a/certificate.html b/certificate.html
index 6b07d6b..5b53e3d 100644
--- a/certificate.html
+++ b/certificate.html
@@ -94,8 +94,8 @@
     }
 
     .certificate {
-      margin: 16px;
-      padding: 16px;
+      margin: 12px;
+      padding: 12px;
       background-color: white;
       border-radius: 8px;
       box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
@@ -109,7 +109,7 @@
       color: #28a745;
       padding: 8px 12px;
       border-radius: 4px;
-      margin-bottom: 16px;
+      margin-bottom: 10px;
       font-weight: 500;
     }
 
@@ -126,17 +126,17 @@
     }
 
     .promise-text {
-      margin-bottom: 20px;
+      margin-bottom: 10px;
       line-height: 1.6;
     }
 
     .promise-item {
-      margin-top: 8px;
+      margin-top: 4px;
       padding-left: 20px;
     }
 
     .info-item {
-      padding: 10px 0;
+      padding: 6px 0;
       border-bottom: 1px solid #f0f0f0;
       display: flex;
       align-items: flex-start;
@@ -386,12 +386,15 @@
     }
 
     /* 签名显示样式 */
+    .signature-display {
+      margin-left: 30px;
+    }
     .signature-display img {
-      max-width: 250px;
-      max-height: 120px;
+      max-width: 180px;
+      max-height: 90px;
       border: 1px solid #e0e0e0;
       border-radius: 4px;
-      padding: 8px;
+      padding: 6px;
       background-color: white;
     }
 
@@ -1134,8 +1137,8 @@
       const qrContainer = document.createElement('div');
       qrContainer.id = 'qrCodeDisplay';
       qrContainer.style.cssText = `
-        margin: 10px 0;
-        padding: 10px;
+        margin: 8px 0;
+        padding: 8px;
         background-color: #f8f9fa;
         border-radius: 6px;
         text-align: center;
@@ -1145,8 +1148,8 @@
       const qrTitle = document.createElement('h3');
       qrTitle.style.cssText = `
         color: #28a745;
-        margin-bottom: 8px;
-        font-size: 14px;
+        margin-bottom: 6px;
+        font-size: 13px;
       `;
       qrTitle.innerHTML = '📋 合格证二维码';
       
@@ -1154,11 +1157,11 @@
       const qrImage = document.createElement('img');
       qrImage.id = 'qrCodeImage';
       qrImage.style.cssText = `
-        max-width: 140px;
-        max-height: 140px;
-        margin-bottom: 8px;
+        max-width: 120px;
+        max-height: 120px;
+        margin-bottom: 6px;
         background-color: white;
-        padding: 6px;
+        padding: 4px;
         border-radius: 4px;
         border: 1px solid #e0e0e0;
       `;
@@ -1167,11 +1170,12 @@
       const qrText = document.createElement('div');
       qrText.style.cssText = `
         color: #666;
-        font-size: 11px;
+        font-size: 10px;
         text-align: center;
-        line-height: 1.3;
+        line-height: 1.2;
       `;
-      qrText.innerHTML = '<p style="margin-bottom: 2px;">扫描查看完整信息</p><p>长按保存二维码</p>';
+      qrText.innerHTML = '<p style="margin-bottom: 1px;">扫描查看完整信息</p><p>长按保存二维码</p>';
+      
       
       // 使用Google Charts API生成二维码
       const qrCodeUrl = `https://api.qrserver.com/v1/create-qr-code/?size=140x140&data=${encodeURIComponent(url)}`;