html[data-theme="blue"]{
  --bg:#071525; --surface:#0f2338; --surface-2:#132f4c; --text:#f4faff; --muted:#c5d6e8;
  --border:#244869; --brand:#38bdf8; --brand-2:#2563eb; --brand-text:#05111f;
  --label-color:#0ea5e9;
  --label-shadow:0 0 24px rgba(14,165,233,.56);
  --shimmer-color:rgba(14,165,233,.86);
  --ring:rgba(56,189,248,.34); --glow:rgba(37,99,235,.24);
}