diff --git a/nginx/s3.conf b/nginx/s3.conf
index a649c84..8e61925 100644
--- a/nginx/s3.conf
+++ b/nginx/s3.conf
@@ -1,17 +1,17 @@
-# ========= S3 API 主站域名 ==========
+# ========= S3 API 主站域名 ========== 
 upstream cloud {
     server 127.0.0.1:9000;  # MinIO S3 API
     keepalive 64;
 }
 
-# ========= 控制台子域名 ==========
+# ========= 控制台子域名 ========== 
 upstream admin {
     server 127.0.0.1:9001;  # MinIO 控制台 Web UI
     keepalive 64;
 }
 
 # ----------------------------
-# ✅ S3 API 域名：https://s3.szaiai.com
+# ✅ 控制台路径反代，保留原逻辑：https://s3.szaiai.com/s3
 # ----------------------------
 server {
     server_name s3.szaiai.com;
@@ -45,7 +45,7 @@ server {
 }
 
 # ----------------------------
-# ✅ 控制台子域名：https://console.szaiai.com
+# ✅ 控制台 UI 域名：https://console.szaiai.com
 # ----------------------------
 server {
     server_name console.szaiai.com;
@@ -75,3 +75,32 @@ server {
     server_name console.szaiai.com;
     return 301 https://$host$request_uri;
 }
+
+# ----------------------------
+# ✅ 新增：干净的 API 域名，用于 mc/share/download：https://api.szaiai.com
+# ----------------------------
+server {
+    server_name api.szaiai.com;
+
+    client_max_body_size 5G;
+
+    location / {
+        proxy_pass http://cloud/;
+        proxy_set_header Host $host;
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        proxy_set_header X-Forwarded-Proto $scheme;
+    }
+
+    listen 443 ssl;
+    ssl_certificate /etc/letsencrypt/live/api.szaiai.com/fullchain.pem;
+    ssl_certificate_key /etc/letsencrypt/live/api.szaiai.com/privkey.pem;
+    include /etc/letsencrypt/options-ssl-nginx.conf;
+    ssl_dhparam /etc/letsencrypt/ssl-dhparams.pem;
+}
+
+server {
+    listen 80;
+    server_name api.szaiai.com;
+    return 301 https://$host$request_uri;
+}