:root{
/* Nullspace radii — hard-edged. 2–6px does 90% of the work; nothing soft. */
--kd-radius-xs:2px;--kd-radius-sm:3px;--kd-radius-md:4px;--kd-radius-lg:6px;--kd-radius-xl:8px;--kd-radius-2xl:10px;--kd-radius-pill:999px;
--kd-border-hair:1px;--kd-border-thick:2px;
--kd-blur-glass:14px;--kd-blur-scrim:6px;
}