Theme: Vertical 3:4 twelve-hours city collage poster for Seoul, showing one city shifting from early morning warmth to night atmosphere.
Subject: Seoul is presented through a full-day visual sequence; hanok roofline, glass towers, street food, station signs appear across the grid as recognizable city moments, local lifestyle scenes, transit, food, skyline, streets, river or night views.
Scene: A premium cultural-travel magazine poster built as a 3-column by 4-row city collage, with each tile representing a different hour block from dawn to late night.
Composition: Fixed 3x4 grid layout on a vertical 3:4 poster: twelve cinematic panels, clear time progression, balanced landmark distribution, title area for the city name, and subtitle reading the city plus Twelve Hours.
Signature elements: 3x4 time-grid, twelve city moments, Seoul, hanok roofline, glass towers, street food, station signs, fixed source color palette with concrete palette cues from the prompt, documentary texture, cinematic travel grading, and premium cultural magazine layout. Fixed source details: Color Mood: soft gray, red accent, night cyan.
Style: City documentary collage with unified cinematic grading, premium travel magazine polish, high-end cultural tourism mood, real street-life texture, and collectible poster finish.
Color palette: fixed source color palette with concrete palette cues from the prompt guides the whole day-to-night transition, with warm dawn light, daytime neutrals, sunset glow, blue-hour depth, neon night accents, and consistent cinematic color harmony.
Lighting: Each time block has distinct lighting, moving naturally from morning warmth through daytime clarity to evening glow and deep night blue, while the whole grid remains visually unified.
Camera: Mixed documentary travel photography language: landmark wide shots, street-level details, food or transit moments, skyline views, and intimate local scenes arranged as one coherent poster.
Typography: Readable title naming Seoul, short time labels for the twelve-hour sequence, and a clean bilingual-style subtitle in the form of city name plus Twelve Hours.
Restrictions: Clean focused visual treatment with coherent detail and source-consistent structure.
