Epic Fantasy Mecha Light Novel Cover

Create a dramatic Japanese light-novel cover illustration for a fantasy mecha isekai story. Vertical poster composition with a huge heroic humanoid robot dominating the center foreground, viewed from a slightly low angle to make it monumental. The robot is sleek and ornate, with white and silver armor, rich gold trim, glowing cyan energy lines, a radiant emerald-green core in the chest, a crown-like crest on the helmet, and a long royal blue cape with gold edging. Behind its back spread multiple crystalline energy wings, about 8 large translucent green shards fanning out symmetrically like luminous blades. In its left hand it holds a long fantasy-tech spear with a blue glowing blade and gold mechanical detailing. At the robot’s feet are 2 human characters: on the left, a red-haired fantasy heroine with very long braided hair, leather-and-fabric adventurer clothing, and a determined expression, looking up at the robot; on the right, a young male protagonist with short dark hair in a fantasy tunic and cloak, reaching one hand up toward the giant machine in awe and urgency, seen mostly from behind. The setting is an epic ruined sci-fi fantasy world with towering gothic spires, broken city structures, drifting smoke, dramatic clouds, and a sky filled with stars, planets, streaks of lightning, and 8 small flying warships scattered in the distance. Highly polished anime key visual style, ultra-detailed, cinematic lighting, intense contrast, blue-green-gold color palette, heroic atmosphere, intricate mechanical rendering, fantasy worldbuilding, premium game or novel cover finish. Add large Japanese title typography at the top: 《{argument name="tagline text" default="本格異世界SFロボット戦記"}》 above a massive metallic logo reading {argument name="series title" default="ASTRAIA"}, with a smaller Japanese subtitle line beneath it. Add a large dramatic Japanese catchphrase at the bottom in glowing white and gold text over 2 lines: {argument name="bottom catchphrase" default="乗って！ユウキ！ その叫びが、世界の運命を決めた！"}. Keep the overall design dense, premium, and readable as a commercial cover, with the central robot as the unmistakable focal point.

• 模型gpt-image-2
• 用途social-media-post
• 风格cinematic, luxury, anime, cyberpunk
• 画幅Flexible

• 用途social-media-post
• 风格cinematic, luxury, anime, cyberpunk
• 推荐规格1:1, 4:5, 16:9, or 9:16
• 模型GPT Image 2

把这个 Epic Fantasy Mecha Light Novel Cover 提示词当作起点。替换主体、产品细节、场景、光线、品牌颜色和输出画幅，同时保留 social-media-post 的用途和 cinematic, luxury, anime, cyberpunk 的视觉方向。

• 主体替换成你的产品、人物、场景或界面对象。
• 用途保留或改写为 social media post、广告图、封面、海报或电商主图。
• 画幅按投放位置选择 1:1、4:5、16:9 或 9:16。
• 品牌线索补充颜色、材质、道具、文案安全区和最终使用平台。

先按目标平台选择画幅，再根据用途选择 1K、2K 或 4K。产品图和海报通常适合更高清晰度。

• 检查主体、光线、构图和画幅都足够明确。
• 检查如果图片要承载标题或广告文案，已经预留文字安全区。
• 检查生成前确认分辨率、额度成本和最终使用位置。

Epic Fantasy Mecha Light Novel Cover 的重点是先固定图片用途，再用主体、构图、光线、风格和画幅控制生成结果。它适合 social media post，并保留 cinematic, luxury, anime, cyberpunk 的视觉方向。

• 能直接用吗？可以。先替换主体、品牌线索和画幅，再进入 Image2Studio 生成。
• 适合什么比例？按平台选择 1:1、4:5、16:9 或 9:16。