diff --git a/asset/logo.png b/asset/logo.png
index 2aa9fc5..f6a198c 100644
Binary files a/asset/logo.png and b/asset/logo.png differ
diff --git a/asset/qr-placeholder.svg b/asset/qr-placeholder.svg
index b346eb3..d9a3d2f 100644
--- a/asset/qr-placeholder.svg
+++ b/asset/qr-placeholder.svg
@@ -1,13 +1 @@
-<svg width="200" height="200" xmlns="http://www.w3.org/2000/svg">
-  <defs>
-    <pattern id="qrPattern" x="0" y="0" width="20" height="20" patternUnits="userSpaceOnUse">
-      <rect width="20" height="20" fill="#fff"/>
-      <rect x="0" y="0" width="10" height="10" fill="#000"/>
-      <rect x="10" y="10" width="10" height="10" fill="#000"/>
-    </pattern>
-  </defs>
-  <rect width="100%" height="100%" fill="#f9fafb" stroke="#e5e7eb" stroke-width="2"/>
-  <rect x="10" y="10" width="180" height="180" fill="url(#qrPattern)"/>
-  <text x="50%" y="50%" font-family="Arial, sans-serif" font-size="16" fill="#666" text-anchor="middle" dy=".3em">扫描二维码进行赞助</text>
-  <text x="50%" y="60%" font-family="Arial, sans-serif" font-size="12" fill="#999" text-anchor="middle" dy=".3em">或点击重试按钮</text>
-</svg>
+<svg xmlns="http://www.w3.org/2000/svg" width="200" height="200"><defs><pattern id="qrPattern" width="20" height="20" x="0" y="0" patternUnits="userSpaceOnUse"><rect width="20" height="20" fill="#fff"/><rect width="10" height="10" x="0" y="0" fill="#000"/><rect width="10" height="10" x="10" y="10" fill="#000"/></pattern></defs><rect width="100%" height="100%" fill="#f9fafb" stroke="#e5e7eb" stroke-width="2"/><rect width="180" height="180" x="10" y="10" fill="url(#qrPattern)"/><text x="50%" y="50%" fill="#666" dy=".3em" font-family="Arial, sans-serif" font-size="16" text-anchor="middle">扫描二维码进行赞助</text><text x="50%" y="60%" fill="#999" dy=".3em" font-family="Arial, sans-serif" font-size="12" text-anchor="middle">或点击重试按钮</text></svg>
\ No newline at end of file