Steampunk Height Difference Poster

Goal: Create a nostalgic vertical height-difference character poster in a warm steampunk anime storybook style, showing an enormous gentle robot and a small child standing beside a central measuring ruler. Canvas: Vertical portrait poster, 3:4 ratio, aged parchment texture with a pale blue-green background, sepia stains, thin decorative brown border, slightly worn corners, soft watercolor-and-ink illustration finish. Layout: Place a full-body steampunk robot on the left, towering to about 250 cm, and a small young girl on the right, about 110 cm tall. A vertical height ruler runs down the exact center from 0 cm at the bottom to 250 cm at the top, with centimeter tick marks and labeled increments every 10 cm. At the top center, add a small vintage label plaque reading 「身長計」. The robot gently bends or reaches down, and the girl reaches up so their fingers touch around the 110 cm mark, creating a tender height-gap scene. Subject details: The left character is tall_character, bulky but kind, covered in riveted metal plates, exposed gears, pipes, gauges, clock faces, round glass lenses, a large wind-up key on its back, and a small smokestack releasing a soft puff of steam. The right character is short_character, cute anime style, wearing rolled dark green overalls, a cream striped long-sleeve shirt, brown shoes, and an orange hair ribbon tying a side ponytail. Keep the child’s face softly simplified or obscured, with the body language expressing affection and trust. Text content: Include exactly 2 top character information cards, one at upper left and one at upper right. Left card text: 「おなまえ」, “Name”, 「クロノ」, 「身長」, “Height”, “250cm”. Right card text: 「おなまえ」, “Name”, 「メイ」, 「身長」, “Height”, “110cm”. Add the large Japanese phrase main_phrase in brown calligraphy on the right-center area. Add exactly 2 comic thought bubbles: one near the robot around the upper center saying robot_bubble_text with a small heart and gear doodles, and one near the girl on the right saying girl_bubble_text with stars, sparkles, and a smiling face doodle. Visual style: Nostalgic Japanese illustrated poster, whimsical steampunk fantasy, delicate linework, muted browns, brass, cream, and faded teal tones, softly shaded, textured paper grain, hand-drawn measuring scale, warm emotional atmosphere. Constraints: Use exactly 2 characters, exactly 2 information cards, exactly 2 thought bubbles, and one central height scale labeled 0–250 cm. Keep all typography vintage brown, preserve the Japanese text exactly where specified, avoid modern UI elements, avoid photorealism, no extra characters, no watermark.