三色等距丝网印刷旅行海报

Create a vertical mid-century travel poster for [Istanbul] featuring [LANDMARK]. Use a strict 3-color palette: cream paper, black technical linework, and [crimson]. Style: Minimalist isometric bird's-eye view with ultra-fine hatching and screen-print texture. Color usage: Solid flat [crimson] for the entire sky and small accents on roofs or streets. No gradients. Text: Bold sans-serif "[Istanbul]" at top in cream, with the local language name in smaller cream text below.