攀岩大墙阿尔卑斯绳索真实摄影

2x2 grid, 16:9, do this for 4 different subjects and scenes input = [ climber(s) / wall_context / move_beat / capture_medium / rope_and_gear_law ] 

run big_wall_alpine_rope_truth:
subject_dna        := a climber mid-move — hips pressed to the rock, heel raised on a tiny edge, fingers
                      crimped or jammed in a crack, forearm tendons and veins standing out, chalk on the
                      hands and smeared on the holds, taped knuckles, a bloodied fingertip, real strain in
                      the face
context_dna        := infer granite, limestone, or alpine mixed ground; real rock structure — cracks, flakes,
                      chickenheads, lichen, water streaks — never a smooth blank surface
moment_state       := the committing move + causal_hint (reaching for a hold, placing a cam, weighting a
                      foot that might slip)
capture_dna        := shot from a fixed line above or a drone at the same height, 24–50mm equiv, deep dof,
                      hard high-altitude light, fine grain
focal_anchor       := the hand on the hold or the gear placement — tack-sharp; the void below dissolves
light_logic        := hard high-altitude sun with an extreme dynamic range, deep unfilled shadow in the
                      corners and cracks, warm bounce off sunlit granite, a cool shadow side, thin clear air
imperfection       := the rope swinging out of frame, wind lifting a jacket, a slightly awkward real body
                      position rather than a heroic one, gear racked untidily
depth & frame      := void below — hundreds of metres of air, the ground lost to haze or absent entirely, a
                      partner or portaledge as a tiny speck for scale; vertical 4:5 emphasizing the drop
rope_and_gear_law  := the rope must attach to a real point — tied through the harness belay loop, running
                      down to the last piece when leading or up to an anchor when top-roped; it sags in a
                      catenary curve when slack and goes dead straight and thin when loaded; cams and nuts sit
                      in constrictions that could actually hold them; quickdraws hang under gravity; the
                      harness bears visible weight
mood               := exposed, focused, deeply committed

render: one honest instant where true rope physics and real gear make the image.

forbidden — objects: ropes attached to nothing, missing harness or anchor, invented gear, a blank featureless
                     wall with no holds
forbidden — look:    a rigid straight rope with no weight, rope floating away from the body, relaxed
                     effortless posture on hard terrain, gym-flat lighting on an alpine face, no exposure
                     below, clean unchalked hands

2x2网格，16:9，对4个不同的主体和场景执行此操作 输入 = [ 攀爬者 / 岩壁背景 / 动作节奏 / 拍摄媒介 / 绳索与装备定律 ] 

运行 big_wall_alpine_rope_truth：
主体基因        := 一个正在移动中的攀爬者 —— 臀部紧贴岩石，脚跟在微小的边缘抬起，手指抠住或塞进裂缝，前臂肌腱和静脉凸出，手上和支点上抹着镁粉，贴着胶带的指关节，流血的指尖，脸上真实的紧绷感
背景基因        := 推断花岗岩、石灰岩或阿尔卑斯混合地形；真实的岩石结构 —— 裂缝、薄片、鸡头状突起、地衣、水迹 —— 绝不是平滑空白的表面
瞬间状态       := 关键动作 + 因果暗示（伸手抓支点、放置机械塞、给可能打滑的脚点加压）
拍摄基因        := 从上方的固定绳索或相同高度的无人机拍摄，等效24–50mm，大景深，强烈的高海拔光线，细微颗粒感
对焦锚点       := 抓在支点上的手或放置的装备 —— 极度清晰；下方的虚空消散
光影逻辑       := 具有极端动态范围的高海拔强阳光，角落和裂缝中深邃的未填充阴影，阳光照射下的花岗岩带来的暖色反光，阴影面呈冷色，空气稀薄清澈
不完美细节     := 绳索晃出画框，风吹起夹克，一个略显尴尬的真实身体姿势而非英雄式的，装备挂得乱七八糟
深度与构图     := 下方的虚空 —— 数百米的空气，地面消失在雾霭中或完全消失，伙伴或吊帐作为一个微小的点用以示比例；垂直4:5强调落差
绳索与装备定律  := 绳索必须连接到一个真实的支点 —— 穿过安全带保护环打结，领爬时向下延伸到最后一个保护点，顶绳时向上延伸到锚点；松弛时呈悬链线弯曲，受力时变得笔直且细；机械塞和岩石塞卡在真正能固定它们的收缩处；快挂受重力下垂；安全带承受可见的重量
情绪           := 暴露感，专注，深度投入

渲染：一个真实的瞬间，由真实的绳索物理和真实的装备构成的图像。

禁用项目 —— 物体：绳索连接到虚空，缺失安全带或锚点，虚构的装备，没有支点的空白无特征岩壁
禁用项目 —— 外观：没有重量感的僵硬直绳，绳索漂离身体，在困难地形上表现出轻松不费力的姿势，阿尔卑斯岩壁上如健身房般平淡的光影，下方没有暴露感，干净未抹镁粉的手