/* North Atlantic Labs standard theme: Ultramarine Classic (chosen by the Owner, 3 Oct 2026). */
html[data-theme="23"] { /* 23 Ultramarine Classic (light) */
  --paper: #eceff6; --paper-2: #f9faff; --ink: #0a0f24; --ink-2: #434a63; --ink-3: #737a92; --line: #cfd5e6;
  --blue: #1a2fd6; --blue-soft: #dde1ff; --sonar: #19b5ff; --deep: #08123a; --deep-2: #101d5a;
  --ink-rgb: 10,15,36; --blue-rgb: 26,47,214; --sonar-rgb: 25,181,255; --on-blue: #ffffff;
  --a1: #5aa2ff; --a2: #9db4ff; --a3: #7ee8ff; --a1-rgb: 90,162,255; --a2-rgb: 157,180,255; --a3-rgb: 126,232,255;
  --d-bg: #08123a; --d-panel: 8,18,58; --d-hi: #eaf0ff; --d-lede: #b3c0ea; --d-mid: #b3c0ea; --d-low: #8593c4; --d-dim: #8593c4; --d-line: 179,192,234;
  --k1: #5aa2ff; --k2: #9db4ff; --k3: #ffc766; --k4: #f0f4ff; --k5: #ff8fb1; --k6: #6fe3ff;
  --glow-rgb: 26,47,214;
}
html[data-light] .nav { background: color-mix(in srgb, var(--paper) 80%, transparent); }