Minimalist YouTube channel avatar icon, square format, absolutely no letters or text of any kind. An elegant gold ornamental emblem centered on a solid deep dark green background: a refined keyhole silhouette with a tiny city skyline glimpsed through the opening, delicate thin gold flourish lines framing it. Flat, bold, simple enough to stay clearly readable at a very small circular size (98x98px), warm vivid gold tone (not too dark/muted), clean elegant logo design, no photographic scene, no clutter, no watermark, no typography whatsoever
