产品光线统领的复古摩托落地页首屏

16:9，2×2网格，以一种罕见但真实存在的经典摩托车为对象执行此任务。输入 = [ TOPIC / HERO_OBJECT / BRAND_TEMPERAMENT / VIEWPORT / GRAVITY_LAW ]

运行 HERO_PRODUCT_GRAVITY：

TOPIC_DNA      := 仅根据主题推断品类——销售什么、谁会购买、货架陈列是什么样
HERO_DNA       := 一个摄影风格的主视觉对象，抠出并放大，占画面30–40%；
                  呈现真实材质反应——箔面的镜面高光、纸张的哑光，
                  皮肤或水果的次表面散射
BRAND_DNA      := 从对象本身提取配色——1种主色、1种从对象实际含有的色相中
                  提取的强调色、1种近中性的背景色
LIGHT_ANCHOR   := 只确定一次主光位置（左上或右上）；所有阴影——对象、卡片、
                  胶囊形元素、飘浮的彩纸——都以相同角度和柔和度投向同一方向
GRAVITY_LAW    := 主视觉对象要么落在表面上（接触阴影紧贴可见的表面平面），
                  要么悬浮（下方有环境光遮蔽，模糊程度随高度增加）——绝不能兼有两者，
                  也不能在没有承接平面的情况下悬浮并投下清晰的硬阴影
DEPTH_ORDER    := 背景铺色 < 装饰性光芒／彩纸 < 主视觉对象 < 界面元素。
                  导航、购物车和按钮始终位于最前方，绝不被遮挡
TYPE_LOGIC     := 标题使用一种展示字体（粗体——选择窄体或宽体，不能两者兼用），
                  其余内容使用一种中性字体；标题不超过6个词，
                  正文以清晰可读的小字号排版，绝不放大成乱码
IMPERFECTION   := 恰好有一个元素突破其边界框——旋转4–7°的徽章、
                  与产品轮廓重叠的贴纸，或页边距中的一处随意笔痕
FRAME          := 桌面端16:10，外边距64–80px；底部边缘露出下一区块顶部
                  的15%，让页面看起来可以滚动
MOOD           := 令人产生欲望、即时感、一个明确无误的操作

渲染：一个屏幕，产品自身的光线统领周围界面的每一个像素。

禁止的对象：图库照片中的人物、展示字号的占位文本块、第二个与之争夺注意力的主视觉对象
禁止的外观：阴影方向不一致、抠图光边或破损边缘、平面二维插画上的投影、对象中不存在的配色、三种字体家族、位于产品后方的导航栏

16:9, 2x2 grid, do this for an unusual but real classic motorcycles INPUT = [ TOPIC / HERO_OBJECT / BRAND_TEMPERAMENT / VIEWPORT / GRAVITY_LAW ] 

Run HERO_PRODUCT_GRAVITY:

TOPIC_DNA      := infer the category from TOPIC alone — what's sold, who buys it,
                  what its shelf looks like
HERO_DNA       := ONE photographic hero object, cut out, oversized, 30–40% of frame;
                  real material response — specular on foil, matte on paper,
                  subsurface scatter on skin or fruit
BRAND_DNA      := derive the palette FROM the object — 1 dominant, 1 accent pulled
                  from a hue the object actually contains, 1 near-neutral ground
LIGHT_ANCHOR   := decide key light position ONCE (upper-left or upper-right); every
                  shadow — object, cards, pills, floating confetti — falls the same
                  direction at the same angle and softness
GRAVITY_LAW    := the hero is either GROUNDED (contact shadow touching a visible
                  surface plane) or SUSPENDED (ambient occlusion beneath, blur growing
                  with height) — never both, never floating with a hard cast shadow
                  and no plane to cast it onto
DEPTH_ORDER    := ground wash < decorative rays/confetti < hero object < UI chrome.
                  Nav, cart and buttons are ALWAYS in front, never occluded
TYPE_LOGIC     := one display face for the headline (heavy — pick condensed OR wide,
                  not both), one neutral for everything else; headline ≤ 6 words,
                  body renders as legible micro-type, never enlarged gibberish
IMPERFECTION   := exactly one element breaks its bounding box — a badge rotated 4–7°,
                  a sticker overlapping the product silhouette, a stray mark in the gutter
FRAME          := desktop 16:10, 64–80px outer gutter; the bottom edge reveals the top
                  15% of the next section so the page reads as scrollable
MOOD           := appetite, immediacy, one unmistakable action

Render: one screen where the product's own light governs every pixel of interface around it.

Forbidden — objects: stock-photo humans, lorem blocks at display size, a second competing hero
Forbidden — look: conflicting shadow directions, cut-out halo or chewed edges, cast shadows
on flat 2D illustration, palette colors absent from the object, three type families,
nav bar sitting behind the product