Long March 5 Launch Site

Build a spaceflight-themed 3D showcase website starring the Long March 5 heavy-lift rocket (nicknamed "Pang Wu", "Fat Five"). The site should carry the ceremony and high-tech feel of an aerospace brand's homepage hero — clean, restrained, cool without being flashy. This is a real webpage: a minimal top navigation bar (three sections: Overview / Structure / Launch), and everything else is 3D.

**The rocket itself (modeled on Long March 5; match the dimensions, proportions, exterior features and livery to public references — millimeter accuracy is not required, but it must read as Pang Wu at a glance):**
- Overall: about 57 m tall, a 5 m diameter core stage with 4 strap-on boosters of 3.35 m diameter; all-white body with blue "China Aerospace" lettering, the national flag, the CASC corporate logo and mission decals; the payload fairing is 5.2 m in diameter, two-petal, blunt cone plus cylinder, with visible separation seams
- Boosters: 4 units; **the slant-cut nose cones (taller outboard, lower inboard)** are Pang Wu's most recognizable feature; each booster has 2 kerolox engines at its base
- Core stage one: a 5 m diameter hydrogen-oxygen body with 2 hydrolox engines at the base (large nozzles, wide spacing); the skin shows panel lines, rivets and external piping, with patches of frost and condensation after fueling
- Core stage two and the interstage: reconstruct the interstage structure from public photos; 2 hydrolox engines with long, slender nozzles beneath stage two
- Payload: a Mars probe modeled on Tianwen-1 — the orbiter body, deployed solar wings, a high-gain antenna, and the bell-shaped backshell of the landing rover capsule; visible once the fairing opens
- Engine nozzles: metal with heat discoloration and wear, cooling-channel texture running from throat to exit, dark red inside the nozzle

**The launch site (modeled on Wenchang):** seaside, tropical — a mobile launch platform carries the rocket, its umbilical tower and swing arms connected to the vehicle; nearby stand the tall service tower (rotating platforms opened), lightning towers and a water tower; a concrete pad with a flame trench; in the distance, silhouettes of palm groves, the coastline and the sea.

**Scene and light:** night has just fallen — deep blue sky, a band of orange afterglow on the sea horizon, sparse stars; several searchlights rake the vehicle from the ground (this is the key light) and the white body glows against the night sky; red obstruction lights blink atop the towers; the ground is wet and reflective.

**Three sections (switched via the nav, with smooth camera transitions; each section has its own default camera):**
1. **Overview:** a slow orbiting hero shot of the full rocket; dragging takes over the camera
2. **Structure:** **exploded view** — the segments (two fairing halves, the Tianwen probe, core stage two, the interstage, core stage one, the 4 boosters, the engine cluster) separate along the vehicle axis and hold in place; each segment gets a floating name and a one-line spec tag; the opened fairing reveals the probe inside; click again to reassemble; hovering a segment highlights it
3. **Launch:** an "Ignite" button → countdown → ignition: the 4 boosters spit bright orange flame while the core hydrolox engines burn a pale, nearly transparent blue; thick smoke rolls out of the flame trench to both sides, the white fog of the water-deluge sound-suppression system rises, the ground lights up and the frame trembles slightly → the swing arms pull back, the rocket lifts off and accelerates upward with the camera following → the 4 boosters separate simultaneously at altitude → fairing separation → core stage one separation (the rocket shrinks to a distant point of light as the background transitions to Earth's curvature and the deep space at the edge of the atmosphere) → a "Reset" returns to the pad. The whole sequence runs 20–30 seconds with a sense of ceremony: the pause inside the countdown, one beat between ignition and liftoff. Move the launch site from the Wenchang seashore to an offshore platform at dawn: the rocket stands at the center of a converted sea platform surrounded by open water and support vessels, the sky gradients from pink-violet to pale gold, and the palm groves and coastline are removed while the service tower, lightning towers and flame trench keep their counterpart structures. The Overview, exploded Structure view and Launch sequence sections, plus all material requirements, stay unchanged. **Materials (hard requirement, not pick-and-choose):** every surface must use generated textures — no flat color fills: white paint on the body (subtle orange-peel texture, panel lines, frost), decals ("China Aerospace" lettering, the flag, logos, mission patch — text must be legible), metal and composite on the interstage and aft skirt, engine-nozzle metal (heat discoloration, wear), the concrete pad (stains, scorch marks in the flame trench), steel tower structures (grey-white paint, rust), the probe's gold foil and solar wings; generated panoramas for the night sky and environment. Flame and smoke need volume and a rolling billow, not a few billboards.

**First screen and camera:** the first screen is the Overview hero shot — slightly low angle, the rocket filling about 80% of frame height, the launch tower behind to one side, afterglow on the horizon; drag to rotate and zoom; it must also look good in portrait orientation on phones.

One more thing: can you add a Long March 7 as well? I'd like the two rockets placed side by side for comparison so the difference in height and girth is obvious at a glance, and ideally I can switch to viewing either one alone. Get the proportions right — I remember Long March 7 is a full circle slimmer and slightly shorter than Pang Wu; don't make them the same size. Leave the other pages unchanged.

Build a spaceflight-themed 3D showcase website starring the Long March 5 heavy-lift rocket (nicknamed "Pang Wu", "Fat Five"). The site should carry the ceremony and high-tech feel of an aerospace brand's homepage hero — clean, restrained, cool without being flashy. This is a real webpage: a minimal top navigation bar (three sections: Overview / Structure / Launch), and everything else is 3D.

**The rocket itself (modeled on Long March 5; match the dimensions, proportions, exterior features and livery to public references — millimeter accuracy is not required, but it must read as Pang Wu at a glance):**
- Overall: about 57 m tall, a 5 m diameter core stage with 4 strap-on boosters of 3.35 m diameter; all-white body with blue "China Aerospace" lettering, the national flag, the CASC corporate logo and mission decals; the payload fairing is 5.2 m in diameter, two-petal, blunt cone plus cylinder, with visible separation seams
- Boosters: 4 units; **the slant-cut nose cones (taller outboard, lower inboard)** are Pang Wu's most recognizable feature; each booster has 2 kerolox engines at its base
- Core stage one: a 5 m diameter hydrogen-oxygen body with 2 hydrolox engines at the base (large nozzles, wide spacing); the skin shows panel lines, rivets and external piping, with patches of frost and condensation after fueling
- Core stage two and the interstage: reconstruct the interstage structure from public photos; 2 hydrolox engines with long, slender nozzles beneath stage two
- Payload: a Mars probe modeled on Tianwen-1 — the orbiter body, deployed solar wings, a high-gain antenna, and the bell-shaped backshell of the landing rover capsule; visible once the fairing opens
- Engine nozzles: metal with heat discoloration and wear, cooling-channel texture running from throat to exit, dark red inside the nozzle

**The launch site (modeled on Wenchang):** seaside, tropical — a mobile launch platform carries the rocket, its umbilical tower and swing arms connected to the vehicle; nearby stand the tall service tower (rotating platforms opened), lightning towers and a water tower; a concrete pad with a flame trench; in the distance, silhouettes of palm groves, the coastline and the sea.

**Scene and light:** night has just fallen — deep blue sky, a band of orange afterglow on the sea horizon, sparse stars; several searchlights rake the vehicle from the ground (this is the key light) and the white body glows against the night sky; red obstruction lights blink atop the towers; the ground is wet and reflective.

**Three sections (switched via the nav, with smooth camera transitions; each section has its own default camera):**
1. **Overview:** a slow orbiting hero shot of the full rocket; dragging takes over the camera
2. **Structure:** **exploded view** — the segments (two fairing halves, the Tianwen probe, core stage two, the interstage, core stage one, the 4 boosters, the engine cluster) separate along the vehicle axis and hold in place; each segment gets a floating name and a one-line spec tag; the opened fairing reveals the probe inside; click again to reassemble; hovering a segment highlights it
3. **Launch:** an "Ignite" button → countdown → ignition: the 4 boosters spit bright orange flame while the core hydrolox engines burn a pale, nearly transparent blue; thick smoke rolls out of the flame trench to both sides, the white fog of the water-deluge sound-suppression system rises, the ground lights up and the frame trembles slightly → the swing arms pull back, the rocket lifts off and accelerates upward with the camera following → the 4 boosters separate simultaneously at altitude → fairing separation → core stage one separation (the rocket shrinks to a distant point of light as the background transitions to Earth's curvature and the deep space at the edge of the atmosphere) → a "Reset" returns to the pad. The whole sequence runs 20–30 seconds with a sense of ceremony: the pause inside the countdown, one beat between ignition and liftoff. Add a plain-language explainer layer to the showcase: in the exploded Structure view, clicking any segment pops up two or three accessible sentences on what that part does and how it works, alongside its spec tag; the countdown, ignition and three separation moments in the launch sequence each get one synchronized caption. The explainer text can be toggled off in settings and is written for viewers with no aerospace background. **Materials (hard requirement, not pick-and-choose):** every surface must use generated textures — no flat color fills: white paint on the body (subtle orange-peel texture, panel lines, frost), decals ("China Aerospace" lettering, the flag, logos, mission patch — text must be legible), metal and composite on the interstage and aft skirt, engine-nozzle metal (heat discoloration, wear), the concrete pad (stains, scorch marks in the flame trench), steel tower structures (grey-white paint, rust), the probe's gold foil and solar wings; generated panoramas for the night sky and environment. Flame and smoke need volume and a rolling billow, not a few billboards.

**First screen and camera:** the first screen is the Overview hero shot — slightly low angle, the rocket filling about 80% of frame height, the launch tower behind to one side, afterglow on the horizon; drag to rotate and zoom; it must also look good in portrait orientation on phones.

One more thing: can you add a Long March 7 as well? I'd like the two rockets placed side by side for comparison so the difference in height and girth is obvious at a glance, and ideally I can switch to viewing either one alone. Get the proportions right — I remember Long March 7 is a full circle slimmer and slightly shorter than Pang Wu; don't make them the same size. Leave the other pages unchanged.