:root{
  /* Hearmeout is a square-cornered system. Radius is reserved for round things
     (avatars in chat are square too — only social glyphs and dots are circles). */
  --radius-none:0;
  --radius-pill:999px;
  --radius-circle:50%;

  --border-width:1px;
  --border-width-strong:2px;
  --border-default:var(--border-width) solid var(--grey-200);
  --border-field-style:var(--border-width) solid var(--grey-200);
  --border-selected:var(--border-width-strong) solid var(--green-600);
  --divider:var(--border-width) solid var(--grey-200);
}