title: Amp pages, PWA and mobile website
body: <p>this in not a very technical question.
  I have and editorial website, and my website is not responsive. 
  I have a desktop version and a mobile versione created using Rails Variants, so for mobile I'm using a lightest layout with a unique design.</p>
  
  <p>I need to add amp pages, and I already add the amp version to every content. Now with Progressive Web App I think that offline contents, push notification and "app feeling" could enhance the user experience. </p>
  
  <p>Is possibile to have a configuration like this:</p>
  
  <ul>
  <li>Desktop -> desktop versione</li>
  <li>Smartphone -> mobile layout</li>
  <li>Google News -> amp pages</li>
  <li>Android smartphone with site added as app - > PWA with amp pages</li>
  </ul>