生成方式：內建 image_gen__imagegen；未使用 CLI 或 API key。
兩張圖片皆為無參考圖片的新生成，transparent_background=false。

aurora-observatory.png — 1586 × 992
Use case: stylized-concept. Asset type: an original desktop wallpaper, wide landscape 16:10 composition. Create a beautiful quiet Antarctic field station at blue hour, with one small expressive penguin researcher standing beside a warmly glowing observatory window, looking up at immense soft green aurora curtains across a deep navy polar sky. Sophisticated painterly editorial illustration, tactile gouache and subtle screenprint grain, crisp architectural silhouettes, powder snow, muted sage and blue-gray with restrained amber light. Expansive calm sky and open snow for desktop icons, tiny detailed cozy station in the lower right third, enormous sense of scale. A small path of footprints leads to the station. Peaceful, intriguing, beautifully composed, premium art direction. No letters, words, logos, watermark, interface or border. Not photorealistic, not a flat vector icon. The penguin is a fictional original character, not any existing mascot. Opaque background.

polar-mail-train.png — 941 × 1672
Use case: stylized-concept. Asset type: original smartphone lock-screen wallpaper, tall portrait composition about 9:16. A tiny original penguin courier with a rust-orange scarf stands on an empty snowy railway platform in a dreamlike Antarctic landscape at pale dawn. One beautiful little deep-forest-green polar train waits at the bottom of the picture with glowing amber windows and delicate frosted brass details. Vast quiet pale blue sky fills the upper half, with a small crescent moon fading and soft pink distant ice mountains, suitable for a phone clock overlay. A narrow rail line curves from foreground into distant snowy hills. Refined cinematic gouache illustration with delicate print grain, carefully drawn texture and elegant atmospheric perspective. Cozy, serene, contemplative, not childish, charming understated penguin silhouette. Top 45 percent predominantly open sky. Restrained palette: icy blue, cream snow, dark green, tiny burnt-orange accents. No text, letters, logos, labels, watermarks, border, phone frame or UI. Do not depict any existing branded character. Opaque background.