Blog hero image that doesn't look like stock

Wide 16:9 editorial hero illustrating the idea of {{abstract concept}} — not a literal depiction. Single strong visual metaphor: {{metaphor, e.g. one open door in a long identical corridor}}. Cinematic composition with a clear focal point on the left third and calm negative space on the right for headline text. Muted palette of {{2-3 colours}} with one saturated accent used exactly once. Soft directional light, gentle atmospheric haze, subtle film grain. Depth built with three planes: a dark foreground element, the lit subject, and a receding background. Painterly-but-restrained rendering, no rendering fireworks.

Negative: text, letters, watermarks, collage of icons, laptop on a desk, handshake, lightbulb, brain made of circuits, glowing blue tech grid, stock-photo people pointing at charts.