:root{
/* Brand core */
--at-blue:#135698;--at-green:#099965;
--at-blue-deep:#0d3f70;--at-blue-bright:#1e9cd7;--at-teal-tint:#7fc4b2;
/* Blue ramp */
--blue-50:#eef4fa;--blue-100:#d6e4f2;--blue-200:#aac7e3;--blue-300:#76a5d0;--blue-400:#3f7cb4;--blue-500:#135698;--blue-600:#104a83;--blue-700:#0d3f70;--blue-800:#0a3057;--blue-900:#07223e;
/* Green ramp */
--green-50:#eaf7f1;--green-100:#cdecde;--green-200:#98d9bd;--green-300:#5cc198;--green-400:#2bab79;--green-500:#099965;--green-600:#088457;--green-700:#076e49;--green-800:#055538;--green-900:#043d29;
/* Neutrals (cool, blue-cast) */
--gray-0:#ffffff;--gray-50:#f6f8fa;--gray-100:#eceff3;--gray-200:#dde2e9;--gray-300:#c2cad4;--gray-400:#98a4b3;--gray-500:#6b7a8d;--gray-600:#4d5b6d;--gray-700:#374453;--gray-800:#232e3b;--gray-900:#131c26;
/* Semantic status */
--success:#099965;--warning:#c77d0a;--danger:#c03434;--info:#1e9cd7;
--success-bg:#eaf7f1;--warning-bg:#fcf3e3;--danger-bg:#fbeaea;--info-bg:#e8f5fb;
/* Semantic aliases */
--brand-primary:var(--at-blue);--brand-secondary:var(--at-green);
--text-heading:var(--gray-900);--text-body:var(--gray-700);--text-muted:var(--gray-500);--text-on-brand:#ffffff;--text-link:var(--at-blue);--text-link-hover:var(--at-blue-deep);
--surface-page:#ffffff;--surface-subtle:var(--gray-50);--surface-card:#ffffff;--surface-brand:var(--at-blue);--surface-brand-deep:var(--at-blue-deep);--surface-accent-tint:var(--blue-50);
--border-default:var(--gray-200);--border-strong:var(--gray-300);--border-focus:var(--at-blue);
}