/* ──────────────────────────────────────────────────────────────
   The Nereu "desk" — the ONE source for the dark wallpaper behind
   every surface. Loaded via <link href="/styles/nereu-desk.css"> by
   the landing, the Instructions manual, and the Reference; served
   from editor/public at web root (same in dev + prod). The cream
   panels are opaque, so only this wallpaper defines the dark look —
   change the desk HERE, once.
   ────────────────────────────────────────────────────────────── */
:root[data-theme="dark"] {
  --nereu-desk:
    radial-gradient(circle at 46% 8%, rgba(255, 138, 61, 0.14), transparent 32%),
    radial-gradient(circle at 74% 52%, rgba(64, 156, 255, 0.08), transparent 30%),
    linear-gradient(135deg, #241a12, #17110b 55%, #0c0906 100%);
  --nereu-desk-solid: #0c0906;
}