:root{
/* Base palette — three colours, nothing else */
--navy-900:#182133;
--peach-100:#FFEAD9;
--white:#FFFFFF;

/* Navy at reduced opacity — the only permitted derivations */
--navy-80:rgba(24,33,51,.80);
--navy-64:rgba(24,33,51,.64);
--navy-48:rgba(24,33,51,.48);
--navy-18:rgba(24,33,51,.18);
--navy-10:rgba(24,33,51,.10);

/* Semantic aliases */
--surface-page:var(--white);
--surface-panel:var(--peach-100);
--surface-inverse:var(--navy-900);

--text-heading:var(--navy-900);
--text-body:var(--navy-80);
--text-muted:var(--navy-64);
--text-on-inverse:var(--white);
--text-on-panel:var(--navy-80);

--line-rule:var(--navy-18);
--line-strong:var(--navy-900);

--icon-stroke:var(--navy-900);

--link:var(--navy-900);
--link-hover:var(--navy-64);
}