core&ui: add webauthn support (#484)

Co-authored-by: panda <panda_dtdyy@outlook.com>
Co-authored-by: undefined <i@undefined.moe>

packages/ui-default/misc/typography.styl

@@ -212,11 +212,11 @@ u, .typo-u
       display: none
 
 .supplementary.inverse
-  color: rgba($immersive-text-color, 0.8)
+  color: $immersive-text-color !important
 
   a
     &, &:visited, &:hover
-      color: rgba($immersive-text-color, 0.8)
+      color: $immersive-text-color !important
 
 .group-list__item
   margin-bottom: 1rem