diff --git a/proxy/rewriter.go b/proxy/rewriter.go
index 28024e2..21556f8 100644
--- a/proxy/rewriter.go
+++ b/proxy/rewriter.go
@@ -161,16 +161,22 @@ func (r *ContentRewriter) rewriteURL(urlStr string) string {
     
     if !u.IsAbs() {
         resolved := r.baseURL.ResolveReference(u)
-        proxyPath := resolved.Path
-        if resolved.RawQuery != "" {
-            proxyPath += "?" + resolved.RawQuery
+        // 同域相对路径，只保留路径部分
+        if resolved.Host == r.baseURL.Host {
+            proxyPath := resolved.Path
+            if resolved.RawQuery != "" {
+                proxyPath += "?" + resolved.RawQuery
+            }
+            if resolved.Fragment != "" {
+                proxyPath += "#" + resolved.Fragment
+            }
+            return "/p/" + r.token + proxyPath
         }
-        if resolved.Fragment != "" {
-            proxyPath += "#" + resolved.Fragment
-        }
-        return "/p/" + r.token + proxyPath
+        // 跨域相对路径（罕见），保留完整 URL
+        return "/p/" + r.token + "/" + resolved.String()
     }
     
+    // 同域绝对 URL，只保留路径
     if u.Host == r.baseURL.Host {
         proxyPath := u.Path
         if u.RawQuery != "" {
@@ -182,6 +188,7 @@ func (r *ContentRewriter) rewriteURL(urlStr string) string {
         return "/p/" + r.token + proxyPath
     }
     
+    // 跨域绝对 URL，保留完整 URL
     return "/p/" + r.token + "/" + u.String()
 }