Rocket Engineering: Surface to LEO is Hardest AI Image Prompt

Type: Japanese rocket engineering infographic. Format: single square educational infographic, 1:1 aspect ratio. Theme: explain that the hardest part of a rocket mission is getting from Earth's surface to low Earth orbit, based on basic rocket engineering. Language: Japanese. Visual style: dark navy space-tech infographic with bright blue section headers, yellow-orange highlights, white Japanese typography, clean engineering diagrams, realistic 3D rocket and planet renders, high contrast, polished social media explainer design. Headline: {argument name="headline text" default="ロケットで一番大変なのは「地表から低軌道（LEO）まで」"}. Subtitle: {argument name="subtitle text" default="そこまで上がれれば、ミッションは半分成功したようなもの"}. Canvas: background deep navy gradient with subtle grid lines and space atmosphere glow; border thin blue outline; layout: top headline, two large upper panels side by side, a wide middle cost panel, and a bottom summary banner. Layout consists of 5 sections: Section 1 (upper left): title "Δvの大部分は地表から低軌道（LEO）まで", containing vertical altitude and delta-v comparison chart with rocket launch illustration, main visual: large white-and-black heavy rocket lifting off at far left with bright orange flames and smoke cloud; chart columns: "到達高度（目安）" and "必要なΔv（目安）"; 4 altitude stages: (1) low Earth orbit (LEO) 200-2,000 km, delta-v approx 9,000-9,500 m/s (approx 85-90%), icon small satellite; (2) atmospheric escape 100 km+, delta-v approx 1,200 m/s (approx 10%), icon small angled rocket; (3) high altitude (low atmospheric drag) 10-20 km, delta-v approx 300-400 m/s (approx 3-4%), icon small rocket; (4) ascent (gravity and air resistance) surface-10 km, delta-v approx 1,500-2,000 m/s (approx 15-20%), icon small rocket nose-up. Two callouts: "Δv to LEO is overwhelming!" (yellow headline inside bordered dark box); "If you reach LEO, the mission is half success" (larger orange bordered box with downward arrow). Section 2 (upper right): title "From LEO to lunar orbit and Mars orbit, the delta-v difference is small", containing space trajectory comparison diagram and delta-v table; 3 celestial bodies: LEO (Earth with blue atmosphere, dotted circular orbit, label 200-2,000 km), lunar orbit (gray Moon in dotted orbit, label approx 1,000-2,000 km altitude), Mars orbit (orange Mars in dotted orbit, label approx 300-1,000 km altitude); 2 trajectory arrows: Earth/LEO to Moon, Moon to Mars; 2 comparison boxes: LEO → lunar orbit approx 3,100 m/s, LEO → Mars orbit approx 4,900 m/s; highlight: difference approx 1,800 m/s; definition box: title "What is Δv (delta-v)?", text "Total amount of velocity needed to change a rocket or spacecraft's speed. Larger values require more fuel.", icon light bulb; reference list: Surface → LEO (low orbit) approx 9,000-9,500 m/s, LEO → lunar orbit approx 3,100 m/s, LEO → Mars orbit approx 4,900 m/s, LEO → geostationary orbit (GEO) approx 3,900 m/s; footnote: "※Values vary depending on fuel efficiency and conditions." Section 3 (middle full width): title "Expensive rocket reality: most costs also concentrated on 'to LEO'", containing cost breakdown panel; 4 subcomponents: donut chart, label 80-90% and 10-20%, colors yellow and blue; legend: "Surface to LEO cost (launch, fuel, structure, development, etc.)" and "Mission cost beyond LEO (orbit change, navigation, observation instruments, etc.)"; coin stack illustration, label "Estimated rocket launch cost (per launch)", value "tens of billions to hundreds of billions yen or more"; small rocket launch icon and explanatory text: "In disposable rockets, most fuel and body are consumed or discarded to reach LEO. In other words, transporting to LEO is the most expensive part." Section 4 (bottom full width): summary banner, title "Summary: From surface to LEO is the biggest barrier. Beyond it, space becomes much more accessible."; icon large yellow checkmark in circle at left; background visual curved Earth horizon and small rocket launch at right; body text "Understanding the reality of rocket engineering reveals the difficulty and cost structure of space missions." Section 5: overall visual accents throughout, including blue panel headers, orange arrows, thin divider lines, small spacecraft icons, glowing yellow emphasis text. Typography: headline large bold white Japanese sans-serif with quoted LEO phrase; subtitle bold yellow Japanese sans-serif; body compact clean white Japanese text; numbers large bold white and yellow numerals for delta-v values. Color palette: primary background deep navy blue; accent golden yellow-orange; secondary electric blue; text white. Rendering instructions: Create a crisp, readable, information-dense Japanese infographic suitable for X/Twitter. Keep all labels sharp and legible, align panels cleanly, preserve the exact Japanese text where specified, use realistic rocket/planet illustrations mixed with flat UI-style charts, and avoid clutter outside the structured panels.