垂直像素风小行星带

Create a vertical retro pixel-art space shooter background, 9:16 mobile game aspect ratio, designed as a seamless-feeling scrolling level backdrop. The scene is deep outer space with a dark navy-to-black starfield and a wide empty central flight corridor for gameplay. Add two luminous blue nebula streams running vertically along the left-center and right-center edges of the corridor, with speckled cyan particles, small bright stars, and occasional star glints. Surround the corridor with an asteroid field: exactly 34 visible rocky asteroids of varying size, irregular jagged shapes, dark charcoal surfaces, and electric blue rim lighting. Count and place them as follows: 1 huge cropped asteroid in the upper left corner, 1 huge cropped asteroid on the mid-left edge, 1 large asteroid near lower-left edge, 1 large cropped asteroid at the bottom-left corner, 1 large asteroid near upper-right edge, 1 large asteroid near mid-right edge, 1 large cropped asteroid on the lower-right edge, 1 large asteroid near bottom-right, plus 26 smaller floating asteroids scattered around the left and right sides while keeping the center mostly open. Include a large blue planet cropped into the upper-right quadrant, glowing atmospheric rim, visible curved horizon, subtle surface texture, and bright cyan edge light. Visual style: crisp high-detail pixel art / 16-bit inspired game asset, dramatic blue lighting, strong contrast, no blur, no UI, no spaceships, no characters, no text, no watermark. Use {argument name="dominant color" default="electric blue and deep navy"}, {argument name="aspect ratio" default="vertical 9:16"}, {argument name="central gameplay corridor" default="wide empty vertical corridor"}, {argument name="planet position" default="upper-right quadrant"}, and {argument name="asteroid count" default="34 visible asteroids"}.

创建一个垂直复古像素风太空射击游戏背景，采用 9:16 移动游戏比例，设计为具有无缝滚动感的关卡背景。场景为深邃的外太空，背景为深海军蓝至黑色的星空，中央留有宽阔的空白飞行通道以供游戏进行。在通道左中和右中边缘垂直添加两条发光的蓝色星云流，并点缀青色粒子、明亮的小星星和偶尔闪烁的星光。在通道周围布置小行星带：共计 34 颗可见的岩石小行星，大小不一，形状不规则且呈锯齿状，表面为深炭灰色，边缘带有电光蓝色的轮廓光。具体布局如下：左上角 1 颗巨大的被裁剪小行星，左侧边缘中部 1 颗巨大的被裁剪小行星，左下边缘附近 1 颗大型小行星，左下角 1 颗大型被裁剪小行星，右上边缘附近 1 颗大型小行星，右侧边缘中部 1 颗大型小行星，右下边缘 1 颗大型被裁剪小行星，右下角附近 1 颗大型小行星，外加 26 颗较小的小行星散布在左右两侧，同时保持中央区域开阔。在右上象限包含一颗被裁剪的巨大蓝色行星，具有发光的大气边缘、可见的弧形地平线、细腻的表面纹理以及明亮的青色边缘光。视觉风格：清晰的高细节像素艺术 / 16 位游戏资产风格，戏剧性的蓝色光效，强对比度，无模糊，无 UI，无飞船，无角色，无文字，无水印。使用 {argument name="dominant color" default="电光蓝与深海军蓝"}, {argument name="aspect ratio" default="垂直 9:16"}, {argument name="central gameplay corridor" default="宽阔的垂直空白通道"}, {argument name="planet position" default="右上象限"}, 以及 {argument name="asteroid count" default="34 颗可见小行星"}。