Abstract atmospheric depth: a very dark deep navy blue background (#0B1F4A) with a soft radial glow of royal blue (#173A8F) at the center, subtle vertical shadowed striations suggesting a dark forest of trees, faint atmospheric mist near the bottom, soft warm white-gold light descending from above, a few very subtle golden light points. No fantasy, no illustration, no people, no recognizable objects. Minimal, calm, luminous, high-end, cinematic depth.