For use outside of SDS, the latest versions of the fonts can be downloaded directly:

For additional font downloads – including different file formats and non-variable font versions – see the Adobe Fonts github repositories for Source Sans, Source Han Sans and Source Code Pro

If you are not importing the SDS NPM, CSS or SCSS files already, you can import the required fonts using the following css:

@import url('https://assets.soracom.io/fonts/source-han-sans/SourceHanSansJP-VF.css');
@import url('https://assets.soracom.io/fonts/source-code/SourceCode-VF.css');

body {
  font-family: 'Source Han Sans JP', Arial, Helvetica, sans-serif;
}

code,
pre {
  font-family: 'Source Code', monospace;
}