server {
  listen 80;
  server_name _;
  root /usr/share/nginx/html;
  index index.html;
  location / { try_files $uri $uri/ $uri.html /404.html; }
  location = /llms.txt { default_type text/plain; }
  location = /robots.txt { default_type text/plain; }
  add_header X-Content-Type-Options nosniff;
  add_header Referrer-Policy strict-origin-when-cross-origin;
  add_header X-Frame-Options SAMEORIGIN;
}