/* Square by default. Nothing in this system is rounded — corners are cut, not softened.
   Radius is reserved for the two places a hairline can't do the job. */
:root{
--radius-button:0px;
--radius-card:0px;
--radius-image:0px;
--radius-bar:2px;
--radius-pill:999px;
--border-width:1px;
--rule-strong:2px;
}