/* OpenNavData — D1 skin tokens */
:root{
  /* surfaces */
  --bg-0:#0b0f14; --bg-1:#0d1013;
  --panel-0:#15181c; --panel-1:#191d22; --panel-2:#1b1f24;
  --line-0:#262c33; --line-1:#3a424b;
  /* ink */
  --ink-0:#d4d9de; --ink-1:#9aa1a9; --ink-2:#646b73;
  /* meaning colours — constitutional */
  --accent:#4f93d6;            /* interaction only: selection, focus, active */
  --accent-dim:#2c5a86;
  --alarm:#d64a4f; --alarm-tint:#f0a8ab;   /* refusal only */
  --ok:#7fc59a; --ok-deep:#3f6b52;         /* success only */
  --warn:#e2b93b; --warn-dim:#8a7326;      /* warning only — always dashed/hatched too */
  /* ENC usage-band ladder, cold → warm (1 overview … 6 berthing) */
  --band-1:#3b556e; --band-2:#3c6f8f; --band-3:#46889b;
  --band-4:#9a9a72; --band-5:#b08a5e; --band-6:#c07a52;
  /* shape */
  --r-1:3px; --r-2:5px;
  /* type scale */
  --fs-0:11px; --fs-1:12px; --fs-2:13px; --fs-3:15px; --fs-4:18px;
  --font-ui:'IBM Plex Sans',sans-serif;    /* vendored woff2 in production */
  --font-mono:'IBM Plex Mono',monospace;
  /* spacing */
  --sp-1:4px; --sp-2:8px; --sp-3:12px; --sp-4:16px; --sp-5:24px;
  /* the one shadow tier */
  --shadow:0 2px 10px rgba(0,0,0,.45);
}