:root{
--oh-primary:#1D6FEB;--oh-navy:#0B1F3A;--oh-text:#132A47;--oh-muted:#4A5D75;--oh-border:#D3E0EE;--oh-surface:#FBFDFF;--oh-bg:#F3F8FD;--oh-accent:#C2410C;
--oh-link:#1556C0;--oh-success:#0F7B4F;--oh-warning:#8A5A00;--oh-error:#B42318;--oh-ice:#E3EEF9;
--oh-font-heading:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;--oh-font-body:var(--oh-font-heading);
--oh-base:17px;--oh-scale:1.2;--oh-leading:1.6;--oh-heading-weight:750;
--oh-container:1200px;--oh-content:760px;--oh-radius:12px;--oh-btn-radius:10px;--oh-density:1;
--oh-space:calc(var(--oh-density)*clamp(2.5rem,6vw,4.5rem));--oh-shadow:0 1px 2px rgba(11,31,58,.06),0 8px 24px -12px rgba(11,31,58,.18);
--oh-header-h:68px;
}