weseek__growi/resource/styles/scss/_variables.scss

$font-family-sans-serif:  Lato, -apple-system, BlinkMacSystemFont, 'Hiragino Kaku Gothic ProN', Meiryo, sans-serif;
$font-family-serif:       Georgia, "Times New Roman", Times, serif;
$font-family-monospace:   Osaka-Mono, "MS Gothic", Monaco, Menlo, Consolas, "Courier New", monospace;
$font-family-monospace-not-strictly:   Monaco, Menlo, Consolas, "Courier New", MeiryoKe_Console, "M+ 1m", monospace;
$font-family-base:        $font-family-sans-serif;