:root{
  /* Dark surfaces — deep navy system (DESIGN 5) */
  --ocean-950:#08131F;
  --ocean-900:#0D1B2A;
  --ocean-800:#102438;
  --ocean-700:#15344B;

  /* Engineering blue */
  --blue-700:#0F5FB8;
  --blue-600:#0A4D95;
  --blue-500:#2A7FDB;

  /* Marine cyan */
  --cyan:#1697B8;
  --aqua-500:#1697B8;
  --aqua-400:#7CCFE0;

  /* Text */
  --ink-900:#17212B;
  --ink-600:#687684;
  --ink-400:#8592A0;

  /* Lines and surfaces */
  --line-300:#DBE3EA;
  --line-200:#E8EDF2;
  --bg-100:#EEF3F7;
  --bg-50:#F5F7FA;
  --white:#FFFFFF;

  /* Status — functional only */
  --green:#2F7B4B;
  --amber:#A86A12;
  --red:#BD4545;

  --shadow: 0 18px 48px rgba(13,27,42,.08);
  --radius:8px;
  --radius-sm:6px;
  --radius-lg:10px;

  --font-body: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: "IBM Plex Mono", SFMono-Regular, Menlo, Consolas, monospace;
}