Create a highly detailed cinematic sci-fi construction scene in a vertical 3:4 composition. A massive white-and-blue humanoid construction mech stands on the edge of a skyscraper rooftop high above a futuristic city construction site, viewed from a dramatic elevated three-quarter angle. The mech has exactly 2 long mechanical arms, 2 heavy mechanical legs, an open cockpit cabin with glass framing, exposed hydraulic pistons, cables, circular joints, bolts, warning stripes, antennae, roof lights, and weathered industrial paint. Each arm grips one bundle of dark steel I-beams, for exactly 2 visible steel beam bundles total, held horizontally like oversized construction tools. Inside the cockpit, a relaxed middle-aged man with wavy dark hair, stubble, sunglasses, a blue button-up shirt, white trousers, brown belt, wristwatch, and casual shoes reclines with both feet up, calmly drinking from a small cup as if on a break; use {argument name="character mood" default="calm, confident, slightly smug"}. The rooftop is a pale concrete slab with construction clutter, including exactly 1 orange traffic cone and scaffolding pipes near the lower right. Far below, show a vast city full of cranes, skeletal high-rise frames, platforms, and one large circular excavation pit, fading into clouds and bright haze. Lighting is crisp daylight with blue sky, white clouds, strong shadows, high altitude atmosphere, intricate manga/anime-inspired mechanical linework, realistic industrial textures, and epic scale. Add a small film-strip style date/signature stamp in the bottom-right corner containing {argument name="date text" default="July 7, 2026"} and a cursive signature-like mark. No extra characters, no logos, no readable brand names.