:root{
--font-sans:'Nunito Sans',system-ui,-apple-system,sans-serif;
--font-mono:'Space Mono',ui-monospace,'Courier New',monospace;
/* Scale */
--text-xs:12px;--text-sm:13px;--text-base:15px;--text-md:17px;--text-lg:21px;--text-xl:26px;--text-2xl:32px;--text-3xl:40px;--text-4xl:52px;--text-5xl:64px;
/* Weights (Nunito Sans variable) */
--weight-regular:400;--weight-medium:600;--weight-bold:700;--weight-heavy:800;--weight-black:900;
/* Leading */
--leading-body:1.55;--leading-snug:1.35;--leading-display:1.1;
/* Tracking — the lowercase letterspaced secondary line is a brand motif ("api gateway" → "smartphone") */
--tracking-display:-0.01em;--tracking-label:0.14em;
}