chore: Set BIZ UD(P)Gothic as Japanese font (#51)

Author: mkpoli

static/styles/default.css

@@ -71,7 +71,7 @@
 body,html {
   background-color: #fdfdfd;
   color: #19181f;
-  font-family: HK Grotesk,Inter,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Open Sans,Helvetica Neue,sans-serif;
+  font-family: HK Grotesk,Inter,BIZ UDGothic,BIZ UDPGothic,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Open Sans,Helvetica Neue,sans-serif;
   font-size: 18px;
   scroll-behavior: smooth;
   scroll-padding-top: min(max(65px,8vh),128px)