server {
    listen 80;
    server_name localhost;
    root /app;
    index index.html;

    # SPA 路由支持
    location / {
        try_files $uri $uri/ /index.html;
    }

    # 静态资源缓存
    location /assets/ {
        expires 1y;
        add_header Cache-Control "public, immutable";
    }

    # 健康检查端点
    location /health {
        access_log off;
        return 200 "ok";
        add_header Content-Type text/plain;
    }
}