:root{
--space-1:4px;--space-2:8px;--space-3:12px;--space-4:16px;--space-5:24px;--space-6:32px;--space-7:48px;--space-8:64px;--space-9:96px;--space-10:144px;
/* printed-paper geometry: corners stay sharp */
--radius-none:0;--radius-hairline:2px;--radius-seal:999px;/* circles only: seals, buttons-as-objects */
--rule-hairline:1px solid var(--border-hairline);
--rule-strong:2px solid var(--border-strong);
/* shadows read as paper on paper, never glassy */
--shadow-paper:0 1px 2px rgba(33,29,25,.10),0 6px 18px rgba(33,29,25,.08);
--shadow-lifted:0 2px 4px rgba(33,29,25,.12),0 16px 40px rgba(33,29,25,.12);
--emboss:inset 0 1px 0 rgba(255,255,255,.75),inset 0 -1px 0 rgba(33,29,25,.12); /* @kind shadow */
--measure:62ch;
}