Create a 9:16 vertical cinematic storyboard made from four stacked widescreen panels for an original dystopian opening sequence. Show a gray authoritarian city in cold wind: a lonely worker stepping through dust outside a concrete apartment block; a narrow institutional hallway with blank propaganda posters and harsh fluorescent light; the worker pausing beside an old elevator and dim stairwell; and a final high-angle stairwell shot that feels tense and watched. Use muted green-gray color grading, overcast daylight, gritty concrete textures, drifting dust, worn coats, restrained production design, and realistic movie-still lighting. Keep the panels clean, cinematic, and visually connected like a film storyboard. Do not include any book title, author name, direct quotation, recognizable protected slogans, famous character names, real political portraits, readable propaganda text, logos, or watermarks. Output a high-quality 9:16 image suitable for GPT Image 2.