复古西安肉夹馍美食海报

Goal: Create a square retro Chinese travel-food poster celebrating Xi'an and its signature dish, combining landmark architecture, local flavor, and vintage print design.

Canvas: Square 1:1 poster, warm sepia and brick-red palette, aged paper texture, halftone dots, distressed ink edges, dramatic food-advertising lighting. No modern clean minimalism; make it look like a nostalgic printed city souvenir poster.

Layout: Left side dominated by large expressive cream-colored Chinese brush calligraphy reading “西安你好”, with small text above it “一城一菜” and “ONE CITY ONE DISH”. Beneath the calligraphy place “HELLO XI’AN” in serif capitals. Right upper half shows a detailed historic Xi’an bell-tower-style pavilion on a stone city wall, with a faint pagoda silhouette behind it and additional low city-wall silhouettes across the middle background. Foreground lower right features one large realistic roujiamo: a flaky round baked bun stuffed with glossy shredded braised meat, sitting on brown parchment paper over a dark rustic wooden board. The food should overlap the city wall and dominate the lower third.

Text content: Include exactly these visible text groups: 1) “一城一菜” with small English “ONE CITY ONE DISH” at top left; 2) main calligraphy “西安你好”; 3) “HELLO XI’AN”; 4) a small vertical red seal near the tower reading “秦味”; 5) handwritten slogan “一口长安味，半城烟火香” with two red underline strokes; 6) large dish label “肉夹馍”; 7) small romanization “ROUJIAMO”; 8) bottom phrase “长安馍香” with a small red cloud ornament.

Subject details: The tower should be richly rendered with green tiled roofs, red wooden beams, carved railings, stone staircases, and arched city-gate openings. The roujiamo should have crisp golden-brown layered bread, visible flaky rim, juicy caramel-brown meat filling, and crumbs on the parchment and board.

Visual style: Chinese retro lithograph poster mixed with realistic food photography, high contrast, warm directional light from upper left, smoky atmospheric background, rough paper grain, screen-print texture, distressed brush lettering, antique travel-poster composition.

Parameters: Use 西安你好, HELLO XI’AN, 一口长安味，半城烟火香, 肉夹馍 as the main customizable text elements.

Constraints: Keep exactly one featured dish and one main landmark building. Do not add people, utensils, plates, QR codes, logos, or extra unrelated text. Maintain the vintage Chinese city-food poster aesthetic and make all typography legible.