Minimal Queue Illustration

Create a minimalist flat vector illustration of number_of_people standing in a line as if waiting in a queue, all shown in left-facing side profile on a warm off-white background. Use a simple editorial style with thick dark charcoal outlines, flat muted colors, and very little facial detail. The scene contains exactly 4 discrete human figures from left to right: 1) a young man in a black jacket and black pants wearing a rounded black backpack, standing upright with arms down; 2) a young woman with dark hair in a ponytail, wearing a muted blue long-sleeve top, slim black pants, black shoes, and a black crossbody shoulder bag; 3) a young man in a black outfit with a black backpack, holding a smartphone in one hand at chest height while looking slightly downward; 4) a young woman with shoulder-length dark hair wearing a muted blue top, long black skirt, black shoes, and carrying a white tote bag over one shoulder. Keep the figures evenly spaced, cropped slightly at the far right edge for the fourth person, with no text, no scenery, no shadows, and no extra objects beyond the 4 bags and 1 smartphone. Use a restrained palette of accent_color, black, charcoal gray, white, and cream, with clean hand-drawn linework and a calm modern urban mood.