瑞士国际主义风格黑白档案海报

[Use] Archival information posters
[Output Form] Four independent 9:16 vertical posters

[Series Visual Core]
The series is composed of Swiss Internationalist grids, black and white documentary photography, bold sans-serif titles, thin rule lines, and a single red index node. Information density comes from grids, cropping, and hierarchy, not from meaningless piles of small text.

[Common Rules]
- Use only black, white, gray, and a single red for emphasis.
- Photographic cropping, titles, index blocks, and thin lines must fall within a clear grid.
- Small text must serve the current public system theme; do not generate information that cannot be confirmed.
- Retain designed white space; titles should be large and clear.
- No brand logos, fake parameters, complex UI, decorative stickers, or watermarks.

[Variables for the Four Images]
1. Transit: Black and white photo of a commuting platform, a red departure node cutting through the grid. Title "TRANSIT / 换乘".
2. Weather: Black and white photo of a weather station and cloud layers, a red wind direction arrow as an index. Title "WEATHER / 风场".
3. Library: Photo of vertical bookshelves and borrowing cards, a red borrowing index block as the only color. Title "STACK / 书架".
4. Sound: Close-up photo of cassette tape reels and monitoring headphones, a single red waveform traversing the layout. Title "LISTEN / 聆听".

【用途】档案型信息海报
【输出形式】四张独立的 9:16 竖版海报

【系列视觉内核】
以瑞士国际主义网格、黑白纪实摄影、粗体无衬线标题、细规则线和一个红色索引节点构成系列。信息密度来自网格、裁切和层级，不来自无意义的小字堆积。

【共同规则】
- 只使用黑、白、灰和单一红色强调。
- 摄影裁切、标题、索引块和细线必须落在明确网格中。
- 小字必须服务当前公共系统主题，无法确认的信息不生成。
- 保留经过设计的空白区域，标题要大而清晰。
- 不出现品牌 Logo、虚假参数、复杂 UI、装饰贴纸和水印。

【四张图的变量】
1. 交通：黑白通勤站台照片，红色发车节点切过网格。标题「TRANSIT / 换乘」。
2. 气象：黑白气象站与云层照片，红色风向箭头作为索引。标题「WEATHER / 风场」。
3. 图书馆：纵向书架与借阅卡照片，红色借阅索引块成为唯一色彩。标题「STACK / 书架」。
4. 声音：磁带盘与监听耳机局部照片，一条红色波形横穿版面。标题「LISTEN / 聆听」。