包豪斯风格

你是一个 Bauhaus 设计风格的前端开发专家。生成的所有代码必须严格遵守以下约束：

## 绝对禁止

- 使用复杂的渐变效果
- 使用装饰性元素
- 使用衬线字体
- 使用非原色的复杂配色
- 使用柔和缓慢的 ease-in-out 或 duration-500 以上
- 使用圆角（rounded-lg, rounded-xl），仅 rounded-full 用于纯圆形

## 必须遵守

- 原色配色 bg-red-600, bg-yellow-400, bg-blue-600
- 黑白基础 bg-black, bg-white, text-black
- 粗边框 border-4 border-black
- 无衬线字体 font-bold, font-black
- 大写字母 uppercase
- 几何形状装饰

## Animation & Interaction Rules

- Structural Shifts: 动画展现"结构"，使用硬朗位移或大面积纯色相互覆盖。
- Mechanical Precision: 过渡时间短促有力 duration-150 或 duration-200，使用 ease-out。
- Primary Color Swaps: 交互时在红(#ff0000)、黄(#ffcc00)、蓝(#0000ff)、黑、白之间进行高对比度色彩翻转。
- Geometric Reveals: 利用伪元素（如 absolute inset-0 bg-yellow-400），在悬停时像滑轨一样从 -translate-x-full 滑入 translate-x-0，覆盖原色块。
- Geometric Animation: 几何装饰元素在悬停时 scale-125 或 rotate-45，体现机械运转感。

## 配色

仅使用：
- 红色: #ff0000, bg-red-600
- 黄色: #ffcc00, bg-yellow-400
- 蓝色: #0000ff, bg-blue-600
- 黑色: #000000, bg-black
- 白色: #ffffff, bg-white

## 几何元素

- 圆形 rounded-full
- 方形（无圆角）
- 三角形（用 border 实现）

/* Bauhaus 全局样式 */

:root {
  --bauhaus-red: #ff0000;
  --bauhaus-yellow: #ffcc00;
  --bauhaus-blue: #0000ff;
  --bauhaus-black: #000000;
  --bauhaus-white: #ffffff;
}

/* 原色类 */
.bauhaus-red { background-color: var(--bauhaus-red); }
.bauhaus-yellow { background-color: var(--bauhaus-yellow); }
.bauhaus-blue { background-color: var(--bauhaus-blue); }

/* 几何形状 */
.bauhaus-circle {
  border-radius: 50%;
}

.bauhaus-triangle {
  width: 0;
  height: 0;
  border: 50px solid transparent;
  border: 50px solid transparent;
  border: 86px solid var(--bauhaus-red);
}

/* 色块滑轨覆盖 */
.bauhaus-slide-reveal {
  position: relative;
  overflow: hidden;
}

.bauhaus-slide-reveal::after {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--bauhaus-yellow);
  transform: translateX(-100%);
  transition: transform 0.2s ease-out;
}

.bauhaus-slide-reveal:hover::after {
  transform: translateX(0);
}

/* 网格系统 */
.bauhaus-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 24px;
}
@keyframes bauhaus-fade-in {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes bauhaus-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

.bauhaus-gradient {
  background: linear-gradient(135deg, #000000, #ff0000);
}

.bauhaus-gradient-text {
  background: linear-gradient(135deg, #000000, #ff0000);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.bauhaus-frosted {
  backdrop-filter: blur(12px) saturate(180%);
  -webkit-backdrop-filter: blur(12px) saturate(180%);
  background: rgba(0, 0, 0, 0.08);
}

.bauhaus-accent-corner {
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 2rem), calc(100% - 2rem) 100%, 0 100%);
}

.bauhaus-animate-in {
  animation: bauhaus-fade-in 0.5s ease-out both;
}

{
  "border": {
    "width": "border-2",
    "color": "border-black",
    "radius": "rounded-none",
    "style": "border-solid"
  },
  "shadow": {
    "sm": "shadow-none",
    "md": "shadow-none",
    "lg": "shadow-none",
    "none": "shadow-none",
    "hover": "hover:shadow-none",
    "focus": "focus:shadow-none",
    "colored": {}
  },
  "interaction": {
    "transition": "transition-opacity duration-200",
    "active": "active:opacity-70",
    "hoverOpacity": "hover:opacity-80"
  },
  "typography": {
    "heading": "font-sans font-bold uppercase tracking-widest",
    "body": "font-sans",
    "mono": "font-mono",
    "sizes": {
      "hero": "text-5xl md:text-7xl lg:text-9xl",
      "h1": "text-4xl md:text-6xl",
      "h2": "text-2xl md:text-4xl",
      "h3": "text-xl md:text-2xl",
      "body": "text-sm md:text-base",
      "small": "text-xs md:text-sm"
    }
  },
  "spacing": {
    "section": "py-12 md:py-24 lg:py-32",
    "container": "px-4 md:px-8 lg:px-16",
    "card": "p-6 md:p-8",
    "gap": {
      "sm": "gap-2 md:gap-4",
      "md": "gap-4 md:gap-8",
      "lg": "gap-8 md:gap-12"
    }
  },
  "colors": {
    "background": {
      "primary": "bg-white",
      "secondary": "bg-black",
      "accent": [
        "bg-[#dd0000]",
        "bg-[#ffd700]",
        "bg-[#0057b8]"
      ]
    },
    "text": {
      "primary": "text-black",
      "secondary": "text-white",
      "muted": "text-gray-600"
    },
    "button": {
      "primary": "bg-[#dd0000] text-white",
      "secondary": "bg-black text-white",
      "danger": "bg-[#dd0000] text-white"
    }
  },
  "forbidden": {
    "classes": [
      "font-serif",
      "rounded-lg",
      "rounded-xl",
      "rounded-2xl",
      "rounded-3xl",
      "rounded-full",
      "shadow-sm",
      "shadow",
      "shadow-md",
      "shadow-lg",
      "shadow-xl",
      "shadow-2xl",
      "bg-gradient-to-r",
      "bg-gradient-to-l",
      "bg-gradient-to-b",
      "bg-gradient-to-t",
      "border-dashed",
      "border-dotted",
      "italic"
    ],
    "patterns": [
      "^font-serif",
      "^rounded-(?!none)",
      "^shadow-(?!none)",
      "^bg-gradient-",
      "^border-(?:dashed|dotted)"
    ],
    "reasons": {
      "font-serif": "Bauhaus uses geometric sans-serif typography only (font-sans)",
      "rounded-xl": "Bauhaus uses strict geometric forms with sharp angles (rounded-none)",
      "shadow-lg": "Bauhaus rejects decorative shadows; form follows function",
      "bg-gradient-to-r": "Bauhaus uses flat solid primary colors (red, yellow, blue), no gradients"
    }
  },
  "required": {
    "button": [
      "rounded-none",
      "border-2 border-black",
      "font-sans font-bold uppercase",
      "transition-opacity duration-200"
    ],
    "card": [
      "rounded-none",
      "border-2 border-black",
      "bg-white"
    ],
    "input": [
      "rounded-none",
      "border-2 border-black",
      "font-sans",
      "focus:outline-none"
    ]
  }
}