Vintage Paris Cycling Risograph Poster Prompt

Design an original vertical 4:5 vintage risograph travel poster celebrating an anonymous road-cycling finale on a broad Parisian boulevard. Build the image as a four-ink print using midnight blue, warm red, mustard yellow, and uncoated paper cream; every visible color must come from those inks, their halftone overlap, or untouched paper. Place a compact peloton of exactly fourteen fictional cyclists in the lower two-thirds, riding toward a vanishing point just above center. The lead cyclist sits slightly left of center and is framed by two sweeping rows of simplified plane trees, crowd barriers, and cheering spectator silhouettes. Keep all riders anonymous and unbranded: no real athlete, team kit, sponsor, official event name, race logo, flag emblem, trademark, trophy, recognizable bib number, or public figure. Render bicycles with circular wheels, connected diamond frames, paired pedals, readable handlebars, and contact shadows aligned to the road. Use strong diagonal speed lines and repeated wheel arcs to create motion, but keep each rider separable from the group. Translate the distant Paris skyline into generic cream and blue geometric silhouettes rather than copying a protected landmark photograph. Show the crowd as layered abstract cutout shapes with no identifiable faces. Add exactly one headline at the top, "PARIS CYCLING WEEKEND", in uppercase condensed grotesque lettering; keep it centered, evenly tracked, and fully legible. Add no other text. Simulate authentic risograph production: 85 lpi halftone dots, 1.5 mm red-to-blue registration drift, sparse ink roller texture, slight edge feathering, occasional paper flecks, and visible overprint where red and blue create a muted violet. Preserve large cream negative-space areas around the headline and both outer margins. Avoid smooth digital gradients, glossy 3D rendering, photorealistic skin, neon colors, lens flare, motion blur, or modern corporate branding. Light is graphic rather than photographic, with flat shapes and one consistent down-right shadow direction. Output a straight-on museum-scan presentation of the finished print on lightly warm, fibrous 250 gsm paper. Use even neutral illumination, no frame, no hands, no desk props, no perspective skew, and sharp focus from corner to corner. Reproducibility checklist: vertical 4:5 crop; four named inks only; fourteen riders; lead rider left of center; vanishing point above center; two tree rows; centered single headline; 85 lpi dots; 1.5 mm registration drift; down-right shadows; cream outer margins; no marks, signatures, watermarks, official identifiers, or misleading documentary claims. This is an independent graphic-poster interpretation inspired by public cycling culture and intended as a reusable vintage illustration prompt, not official race merchandise.