Realistic near-future sci-fi concept art of an orbital maintenance dock for small satellites above Earth, built from modular robotic arms, service pods, tether rails and compact work platforms. One small satellite is being repaired in the center of the dock. Landscape 4:3 wide three-quarter view, Earth curvature below, practical industrial layout, small signal lights and tool compartments visible with no readable markings. Strong sunlight, blue Earth bounce and crisp shadows create believable orbital space. Clean engineering detail, no logos, no readable text, no watermark, no giant warship, no fantasy shapes.