ultra realistic photo of Seoul skyline at blue hour, elevated viewpoint overlooking Han River, clean unobstructed view, no foreground objects, no ledge, no railing warm golden bridge lights reflecting on water, dense apartment buildings with natural window light variation, Namsan Seoul Tower softly glowing on hill cinematic sky with smooth gradient from deep violet to warm orange near horizon, soft magenta and pink cloud layers, controlled color transition like commercial advertising photography, no harsh saturation, no artificial glow, refined atmospheric color grading long exposure photography, natural color balance for city, slightly desaturated urban tones, high dynamic range, realistic reflections on water, fine atmospheric haze over city 85mm lens, f/8, ISO 100, tripod shot, ultra sharp details, minimal noise, professional architectural photography, photorealistic lighting, no fantasy look, no overprocessed HDR, no neon oversaturation