:root{
/* near-square geometry: the brand reads architectural, not friendly-app */
--radius-none:0;--radius-xs:2px;--radius-sm:3px;--radius-md:4px;--radius-lg:6px;--radius-pill:999px;
--radius-control:var(--radius-xs);--radius-card:var(--radius-none);--radius-image:var(--radius-none);

--border-width-hair:1px;--border-width-thick:2px;

/* shadows are almost absent; separation comes from hairlines and tone */
--shadow-none:none;
--shadow-hairline:0 0 0 1px var(--border-hairline);
--shadow-xs:0 1px 2px rgba(14,13,11,.05);
--shadow-sm:0 2px 8px rgba(14,13,11,.06);
--shadow-md:0 8px 24px rgba(14,13,11,.08);
--shadow-lg:0 24px 64px rgba(14,13,11,.12);
--shadow-focus:0 0 0 2px var(--surface-card),0 0 0 3px var(--focus-ring);
--shadow-inset-hair:inset 0 -1px 0 var(--border-hairline);

--blur-glass:14px;
--glass-light:rgba(250,248,245,.82);
--glass-dark:rgba(14,13,11,.62);
}