diff --git a/Dockerfile.complete b/Dockerfile.complete
index 94ebf0f..73d1afd 100644
--- a/Dockerfile.complete
+++ b/Dockerfile.complete
@@ -92,6 +92,8 @@ COPY --from=frontend-builder /tmp/frontend/dist /usr/share/nginx/html
 
 # 配置 nginx
 RUN rm -rf /etc/nginx/conf.d/default.conf
+# 删除默认 nginx site，防止 default_server 劫持 80 端口
+RUN rm -f /etc/nginx/sites-enabled/default
 COPY ./nginx/default.conf /etc/nginx/conf.d/default.conf
 
 # 创建 supervisor 配置
@@ -127,9 +129,8 @@ priority=20
 environment=BACKEND_PORT="%(ENV_BACKEND_PORT)s",BACKEND_HOST="%(ENV_BACKEND_HOST)s",TRANSCRIBER_TYPE="%(ENV_TRANSCRIBER_TYPE)s",WHISPER_MODEL_SIZE="%(ENV_WHISPER_MODEL_SIZE)s",FFMPEG_BIN_PATH="%(ENV_FFMPEG_BIN_PATH)s",HF_ENDPOINT="%(ENV_HF_ENDPOINT)s",STATIC="%(ENV_STATIC)s",OUT_DIR="%(ENV_OUT_DIR)s",DATA_DIR="%(ENV_DATA_DIR)s",NOTE_OUTPUT_DIR="%(ENV_NOTE_OUTPUT_DIR)s",DATABASE_URL="%(ENV_DATABASE_URL)s",IMAGE_BASE_URL="%(ENV_IMAGE_BASE_URL)s",ENV="%(ENV_ENV)s",GROQ_TRANSCRIBER_MODEL="%(ENV_GROQ_TRANSCRIBER_MODEL)s"
 EOF
 
-# 修改 nginx 配置以使用本地 backend
-RUN sed -i 's/proxy_pass http:\/\/backend:8483/proxy_pass http:\/\/127.0.0.1:8483/g' /etc/nginx/conf.d/default.conf && \
-    sed -i 's/proxy_pass http:\/\/frontend:80/proxy_pass http:\/\/127.0.0.1:8080/g' /etc/nginx/conf.d/default.conf
+# 修改 nginx 配置：backend 代理到本地，前端由 nginx 直接服务静态文件
+RUN sed -i 's/proxy_pass http:\/\/backend:8483/proxy_pass http:\/\/127.0.0.1:8483/g' /etc/nginx/conf.d/default.conf
 
 # 启动 supervisor
 # 推荐启动方式（覆盖默认 env）：
diff --git a/nginx/default.conf b/nginx/default.conf
index 5698753..1c3451d 100644
--- a/nginx/default.conf
+++ b/nginx/default.conf
@@ -2,19 +2,18 @@ server {
   listen 80;
   client_max_body_size 10G;
 
-  # gzip 压缩
   gzip on;
   gzip_vary on;
   gzip_min_length 1024;
   gzip_proxied any;
   gzip_types text/plain text/css application/json application/javascript text/xml application/xml application/xml+rss text/javascript image/svg+xml;
 
-  # 所有非 /api 请求全部代理给 frontend 容器
   location / {
-    proxy_pass http://frontend:80;
+    root /usr/share/nginx/html;
+    index index.html;
+    try_files $uri $uri/ /index.html;
   }
 
-  # 所有 /api 请求代理给 backend 容器
   location /api/ {
     proxy_pass http://backend:8483;
     proxy_set_header Host $host;