Goal: Create a clean promotional device mockup showing a cozy {argument name="wallpaper theme" default="Crayon Shin-chan winter snow scene"} wallpaper adapted across laptop, tablet, and phone screens.
Canvas: Square 1:1 composition, soft light-gray studio background, rounded white display cards with subtle shadows, high-resolution product-ad style.
Layout: Show exactly 3 devices in a balanced grid: 1 large silver laptop centered across the top, 1 black-bezel tablet at bottom left, and 1 black-edged smartphone at bottom right. Each device sits inside its own rounded white rectangular card. The laptop card is widest; the tablet and phone cards are smaller and aligned beneath it with a narrow gap between them.
Wallpaper scene: A soft watercolor/anime winter landscape with a snowy forest, pale misty sky, snow-covered evergreen trees, bushes, and a white snowy field. The scene should feel gentle, nostalgic, and cute, with falling snow and cool blue-white tones. In the foreground include exactly 6 cartoon figures from left to right: 1 bundled child in a dark blue winter hat and blue coat holding snow, 1 small girl in a pink winter outfit, 1 central mischievous boy in a red sweater and yellow shorts running happily with arms raised, 1 small blond child in a green outfit, 1 stocky child in a yellow shirt walking at the right, and 1 small white dog running near the center-right. Keep the characters in a playful Crayon Shin-chan anime style with simple rounded features and expressive poses.
Device details: The laptop is open front-facing with a thin black bezel, centered notch at the top of the screen, silver keyboard and trackpad visible. The tablet is landscape orientation with thick black bezel and rounded corners. The smartphone is vertical with a pill-shaped dynamic-island cutout and slim black frame.
Lock-screen overlays: Add subtle translucent iOS-style lock-screen UI on the devices. Use the time {argument name="lock screen time" default="9:38"} prominently in white or light gray. Use the date {argument name="lock screen date" default="Friday, November 15"} above the time. On the tablet, include a translucent weather widget block at upper left showing {argument name="weather text" default="Cupertino 45° Clear"} and three small circular widget icons beneath it. On the phone, include three small circular widgets under the time and two lock-screen icons near the bottom. Keep all UI text soft and semi-transparent so the wallpaper remains the focus.
Visual style: Premium Apple-like presentation, realistic device mockup lighting, soft shadows, rounded white cards, crisp screens, gentle winter palette, charming watercolor background, cute anime characters, no harsh contrast.
Constraints: Use exactly 3 devices and exactly 6 wallpaper characters/animals. Do not add extra characters, logos, watermarks, captions, or promotional text outside the device screens. The wallpaper must be visibly the same scene adapted to desktop, tablet, and phone crops.
