创作一张竖版复古旅行海报，主题为 {argument name="destination name" default="ASGARD"}，副标题为 {argument name="subtitle text" default="THE NINE REALMS"}。画面中心对称展示一座位于冰封山谷中的雄伟北欧神话城堡，城堡倒映在湖面上。一条破裂的石板路从前景延伸至宫殿发光的拱门。宫殿高耸，呈深海军蓝与象牙白配色，带有尖锐的塔尖、金色的窗户、紫色的悬挂旗帜、雕刻的几何装饰，以及塔顶上四座清晰可见的黑狼雕像。两侧添加积雪覆盖的山脉、周围的小型堡垒建筑、水中的浮冰与岩石，以及前景小路两侧如符文般的立石。天空中，从左下角向右上角横跨一道巨大的对角线彩虹桥（Bifrost），包含四条明显的色带：紫色外圈、深蓝色带、淡白色带和金黄色带。天空应呈现青色、绿松石色、紫色和深靛蓝色的极光，伴有垂直的极光光束和几点微小的星光。采用装饰艺术风格的旅行海报插画，运用平面的几何形状、清晰的轮廓、层叠的景深、绘画质感、高对比度，以及由靛蓝、青色、薰衣草紫、雪白和柔和金组成的冷色调。在底部，加入一个深海军蓝的标题栏，其中包含一行居中的宣传文案 {argument name="promotional copy" default="Explore worlds like these in Visionaria, First Cinematic Imagination App."}，下方是巨大的、带有字间距的大写目的地标题，再下方是较小的、带有字间距的大写副标题，并配有一条细金线和小型菱形装饰。保持构图居中且具有电影感，禁止写实风格，禁止出现人物、现代物品或水印。
英文提示词
Create a vertical vintage travel poster for {argument name="destination name" default="ASGARD"}, subtitle {argument name="subtitle text" default="THE NINE REALMS"}. Show a majestic mythical Norse citadel in a frozen mountain valley, centered symmetrically across a reflective lake. A cracked stone causeway leads from the foreground toward a glowing arched gate in the palace. The palace is tall, dark navy and ivory with sharp spires, gold-lit windows, purple hanging banners, carved geometric ornaments, and four visible black wolf statues on tower rooftops. Add snow-capped mountains on both sides, small surrounding fortress buildings, floating ice and rocks in the water, and rune-like standing stones flanking the foreground path. Across the sky, place one enormous diagonal rainbow bridge/Bifrost arc sweeping from lower left to upper right, with exactly four broad bands: purple outer band, deep blue band, pale white band, and golden yellow band. The sky should glow with northern lights in teal, turquoise, violet, and deep indigo, with vertical aurora shafts and a few tiny star glints. Use a stylized Art Deco travel-poster illustration style with flat geometric shapes, crisp silhouettes, layered depth, painterly texture, high contrast, and a cool palette of indigo, teal, lavender, snow white, and muted gold. At the bottom, include a dark navy title block containing a small centered line of promotional copy reading {argument name="promotional copy" default="Explore worlds like these in Visionaria, First Cinematic Imagination App."}, then the huge spaced uppercase destination title, and beneath it the smaller spaced uppercase subtitle with a thin gold divider line and small diamond ornament. Keep the composition centered and cinematic, no photorealism, no people, no modern objects, no watermark.
