Retro Namba Osaka Travel Poster

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Goal: Create a retro illustrated travel poster promoting Namba, Osaka, Japan, with a clean Japanese tourism-board feel, warm nostalgia, and bold typography. Canvas: Vertical poster in a 9:16 ratio on warm off-white paper with subtle grain, thin cream border, and muted teal, navy, coral, peach, beige, and orange palette. Use crisp vector-like line art, flat shading, slight print texture, and no photorealism. Layout: Divide the poster into 4 stacked areas: 1) a top skyline illustration panel, 2) a centered Japanese quote line, 3) a large central canal street scene integrated with giant letters, and 4) a bottom information footer with logo. Top panel: Wide rectangular illustration of an Osaka city skyline at sunset. Center Tsutenkaku-style tower with a thin antenna and observation deck, surrounded by low-rise buildings, signs, power lines, and a dark train silhouette crossing the lower right. Sky fades from pale blue to peach with a few soft clouds. Quote text: Under the skyline, place handwritten coral Japanese text reading 「そうだ、なんば、行こうよ。」. Keep it spacious and centered. Main illustration: Large bold uppercase word NAMBA dominates the middle, using thick condensed sans-serif block letters in dark navy with pale inner highlights and thin outlines. Inside and around the letters, show a lively Dotonbori-inspired canal street: neon signs, billboards, shop facades, pedestrian bridges, stairs on both sides, railings, lanterns, and a central canal receding in perspective. The canal contains exactly 3 visible boats: one small boat near the center-left foreground with 3 people, one larger boat at the lower right with 5 people, and one tiny distant boat near the bridge with 1 person. Include exactly 2 large vertical billboard characters/figures, one on the left and one on the right, both resembling stylized running sign figures. Include exactly 2 rows of round orange lanterns, one along each canal side. Add small silhouettes of pedestrians on the walkways. Footer text: At the bottom left, add a small location line: "OSAKA, JAPAN」 「NAMBA」". Below it, set a bold navy headline reading NAMBA — LET’S GO!. Under that, add the tagline VIBRANT STREETS. INCREDIBLE FOOD. ENDLESS NEON ENERGY.. Add three compact info lines: "ACCESS: Easy Access from Kansai Airport via Nankai Line", "LINES: Nankai Line · Kintetsu Line · Hanshin Line · Osaka Metro · JR Namba", and "SPOTS: Dotonbori · Glico Sign · Tsutenkaku · Kuromon Market · Namba Yasaka Shrine". Bottom-right logo: Include a simple red-orange paper lantern icon with navy cap and outline. Under it place Japanese hiragana "なんば" and small uppercase "NAMBA". Constraints: Keep all text legible, use the exact visible hierarchy with one skyline panel, one quote, one giant main word, one canal scene, and one footer. Avoid modern glossy effects, avoid extra logos, avoid photographic details, and preserve the retro Japanese travel poster aesthetic.