Ruined Sci-Fi Manga Page

Goal: Create a black-and-white sci-fi manga page showing a ruined futuristic city after a catastrophe, with cinematic wide shots and empty dialogue bubbles for later lettering.

Canvas: Vertical manga page, portrait orientation, clean white page border, high-contrast monochrome ink and grayscale screentone, detailed debris textures, dramatic cloudy sky, no color.

Layout: Use exactly 4 horizontal panels stacked from top to bottom, separated by thick white gutters.
- Panel 1: A very wide establishing shot filling the top third of the page. Show a devastated megacity with collapsed skyscrapers, broken elevated roads, rubble, dust, and a stormy sky split by bright light. Include floating chunks of wreckage in the sky. Add exactly 2 blank white manga speech bubbles: one tall rounded polygon bubble at the upper left and one larger rounded polygon bubble at the upper right.
- Panel 2: A narrow panoramic panel beneath it. Low-angle view of a towering damaged building wall and a dark sky with a levitating rock or debris chunk. Add exactly 1 blank white speech bubble on the right side.
- Panel 3: A narrow action-detail panel. Close-up of one black combat boot stepping onto cracked ground, with small stones and debris floating around it. Add exactly 1 small blank white speech bubble on the left. Leave a large empty white rectangular gutter/space on the far right of this row, as if the panel does not extend across the full page.
- Panel 4: A large final panel occupying the bottom portion. Rear view of a young girl and a small robot facing the ruined city and apocalyptic sky. The girl stands on the left, wearing a dark jacket, short shorts, thigh-high black socks, and sturdy boots, with short dark bobbed hair. The robot stands to her right, squat and cylindrical with a domed head, small side arms, treads, vents, and mechanical details. The background shows broken buildings framing the scene, rubble in the foreground, floating debris in the sky, and a bright crack of light through dense clouds.

Subject details: The main human character is {argument name="character name" default="a silent young girl"}, with {argument name="hair style" default="short dark bobbed hair"}, wearing {argument name="outfit" default="dark jacket, short shorts, thigh-high socks, and black boots"}. The companion is {argument name="robot companion" default="a small cylindrical treaded robot with a domed head"}. The setting is {argument name="ruined city setting" default="a collapsed futuristic megacity under a stormy sky"}.

Visual style: Serious seinen sci-fi manga, painterly ink wash, dense architectural detail, gritty rubble, dramatic perspective, atmospheric haze, heavy blacks, textured grayscale, cinematic composition, no sound effects, no visible lettering inside the bubbles.

Constraints: Exactly 4 panels and exactly 4 blank speech bubbles. Keep all speech bubbles empty white with black outlines. Do not add captions, titles, watermarks, logos, page numbers, or extra characters.