Sun at Night's Door

Using {argument name="theme" default="The Sun Stands at the Door of Night"} as the core, generate a vertical flat illustration poster. First, fill the image with a high-purity structural color derived from the theme emotion, allowing it to take on blocking, blanking, and breathing like low-noise colored paper; The image does not establish true depth of field or complete scenes; instead, the background is treated as a closed surface with only slight paper grain, scan grains, and fine print unevenness. The main visual should not be displayed fully in front of the background, but rather be torn from the upper part of the painting by a horizontal, slightly slanting irregular crack from the paper surface. The crack features white paper fibers, a dark inner edge, sharp rough edges, and a slight outward retraction, as if the inner world is stretching open the paper. The subject appears only from within the cracks through key parts of the cropped section, recognizable edges, a small but strong focal point, and high-density fragments; The complete outline is swallowed by the paper, while secondary information is obscured, leaving only the physical pressure, material texture, and symbolic core that best illustrate the theme. The focal area is not large, yet it must dominate the first glance like a gaze, with the shape partially obscured by the close-up; This obscured form is derived from the semantic transformation of the theme, featuring gesture-like curves, close touch, and lateral guidance, covering part of the focal point and making the view resist being uncleared, discovered, and protected. The edges of the fissures cluster into fine fragmented forms derived from the theme, forming soft boundaries along the upper and lower edges and left and right ends, partially overflowing onto the paper surface but not evenly spreading; Fragments are both content and part of the crack structure, and through density, direction, and color points should push the inner world into the outer empty field. Color maintains clear area hierarchy: the largest structural color remains pure, with medium areas of the main life color or material color used inside the cracks. Small emotional highlights only flash near edge fragments and focal points, while dark anchor points are pressed on the focal contour, inner edge, and key occlusions. The highest brightness is only used for paper edges, tiny highlights, and material cuts. The overall design uses hand-drawn flat color blocks, clear blue-black or dark line drawings, slight paper textures, scanning noise, and uneven print particles, making the subject recognizable even when covered by paper by local contours, edge selections, and local density. Below or in the quietest blank spaces, a large amount of solid color breath is retained; when text appears, it serves only as detailed titles, numbers, short sentences, and miniature footnotes. Using restrained publication typeface, fine strokes, wide spacing, and low distractions, text and blank spaces work together without stealing the focal point inside the gap. The entire composition creates a cover effect where a solid color empty field suppresses the internal world and cracks reveal the thematic secret, steadily preserving the order between large quiet paper surfaces, mid-upper and middle gaps, high-density interiors, single strong focus, foreground occlusion, edge fragments, dark anchor points, and low-tone text. Background color: {argument name="background" default="dark"}, ratio {argument name="ratio" default="16:9 horizontal panel"}