浮世绘数字风

你是一个 Ukiyo-e Digital 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

- 使用渐变阴影或柔和模糊效果
- 使用透明度和玻璃拟态
- 使用大圆角或圆形按钮
- 使用霓虹色或高饱和度现代色彩

## 必须遵守

- 靛蓝 #1a3055 为主色，朱红 #d4553a 为强调色
- 米白 #f5f0e1 为背景（和纸质感）
- 使用硬边阴影 shadow-[Xpx_Ypx_0px_color]
- 使用小圆角 rounded-sm 或直角
- 粗边框 border-2 营造版画轮廓感

## 配色

主色调：
- 靛蓝: #1a3055
- 朱红: #d4553a
- 金叶: #c9a227
- 米白: #f5f0e1

## 特殊元素

- 波浪纹 SVG 装饰
- 硬边阴影模拟版画质感
- 朱印/印章效果装饰
- 大面积扁平色块

## Animation & Interaction Rules

- Woodblock Offset: hover 必须使用硬边偏移阴影（无 blur）+ 轻微位移，模拟木版错位叠印。
- Stamp Press: active 瞬间取消阴影与位移，并切换朱红边框/文字反馈，表现印章压印。
- Zero Fluidity: 使用 duration-75 ease-linear 或 transition-none，拒绝现代丝滑动效。
- Motif Reveal: 波纹/云纹等传统图案可在 hover 进行不透明度硬切，强化版面层次。

## Layout & Spacing
- Section padding: py-16 md:py-24
- Card padding: p-6 md:p-8
- Gap between cards: gap-6 md:gap-8
- Max content width: max-w-6xl mx-auto

## Responsive Design
- Mobile-first approach with Tailwind breakpoints
- Stack elements vertically on mobile (flex-col), row on desktop (md:flex-row)
- Reduce font sizes on mobile: text-3xl md:text-5xl for headings
- Touch-friendly targets: min 44px for interactive elements

## Self-Check Verification
After generating code, verify:
1. All interactive elements have hover/focus/active states
2. Color contrast meets WCAG 2.1 AA (4.5:1 for text)
3. Layout is responsive across breakpoints
4. Typography hierarchy is clear (h1 > h2 > h3 > body)
5. Spacing is consistent using the defined scale
6. All animations respect prefers-reduced-motion

/* Ukiyo-e Digital 全局样式 */

:root {
  --ue-indigo: #1a3055;
  --ue-vermilion: #d4553a;
  --ue-gold: #c9a227;
  --ue-rice: #f5f0e1;
}

/* 硬边阴影 */
.ue-shadow {
  box-shadow: 4px 4px 0px var(--ue-indigo);
}

/* 波浪纹装饰 */
.ue-wave-bg {
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 50' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M0,25 Q50,0 100,25 T200,25' fill='none' stroke='%231a3055' stroke-width='1' opacity='0.1'/%3E%3C/svg%3E");
  background-size: 200px 50px;
  background-repeat: repeat;
}

/* 和纸质感 */
.ue-washi {
  background-color: var(--ue-rice);
  background-image: radial-gradient(
    circle at 50% 50%,
    rgba(26, 48, 85, 0.02) 0%,
    transparent 80%
  );
}

/* 朱印效果 */
.ue-stamp {
  border: 2px solid var(--ue-vermilion);
  padding: 4px 8px;
  color: var(--ue-vermilion);
  font-weight: bold;
}
@keyframes ukiyo-e-digital-fade-in {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

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

.ukiyo-e-digital-card {
  position: relative;
  overflow: hidden;
}

.ukiyo-e-digital-card::before {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 0.3s ease;
  background: linear-gradient(135deg, rgba(26, 48, 85, 0.05), transparent);
  pointer-events: none;
}

.ukiyo-e-digital-card:hover::before {
  opacity: 1;
}

.ukiyo-e-digital-frosted {
  backdrop-filter: blur(12px) saturate(180%);
  -webkit-backdrop-filter: blur(12px) saturate(180%);
  background: rgba(26, 48, 85, 0.08);
}

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

.ukiyo-e-digital-animate-in {
  animation: ukiyo-e-digital-fade-in 0.5s ease-out both;
}

{
  "border": {
    "width": "border-2",
    "color": "border-[#1a3055]",
    "radius": "rounded-sm",
    "style": "border-solid"
  },
  "shadow": {
    "sm": "shadow-[2px_2px_0px_#1a3055]",
    "md": "shadow-[4px_4px_0px_#1a3055]",
    "lg": "shadow-[6px_6px_0px_#1a3055]",
    "none": "shadow-none",
    "hover": "hover:shadow-[6px_6px_0px_#1a3055]",
    "focus": "focus:shadow-[2px_2px_0px_#d4553a]",
    "colored": {
      "indigo": "shadow-[4px_4px_0px_#1a3055]",
      "vermilion": "shadow-[4px_4px_0px_#d4553a]",
      "gold": "shadow-[4px_4px_0px_#c9a227]"
    }
  },
  "interaction": {
    "transition": "transition-all duration-300 ease-in-out",
    "active": "active:translate-y-0.5",
    "hoverTranslate": "hover:-translate-y-0.5"
  },
  "typography": {
    "heading": "font-bold tracking-wider",
    "body": "font-sans",
    "mono": "font-mono",
    "sizes": {
      "hero": "text-4xl md:text-6xl lg:text-8xl",
      "h1": "text-3xl md:text-5xl",
      "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-20 lg:py-28",
    "container": "px-4 md:px-8 lg:px-12",
    "card": "p-5 md:p-8",
    "gap": {
      "sm": "gap-3 md:gap-4",
      "md": "gap-4 md:gap-6",
      "lg": "gap-6 md:gap-10"
    }
  },
  "colors": {
    "background": {
      "primary": "bg-[#f5f0e1]",
      "secondary": "bg-[#1a3055]",
      "accent": [
        "bg-[#d4553a]",
        "bg-[#c9a227]",
        "bg-[#2a5a8c]"
      ]
    },
    "text": {
      "primary": "text-[#1a3055]",
      "secondary": "text-[#d4553a]",
      "muted": "text-[#1a3055]/60"
    },
    "button": {
      "primary": "bg-[#d4553a] text-[#f5f0e1] border-2 border-[#1a3055]",
      "secondary": "bg-[#1a3055] text-[#f5f0e1] border-2 border-[#c9a227]"
    }
  },
  "forbidden": {
    "classes": [
      "rounded-full",
      "rounded-2xl",
      "rounded-xl",
      "rounded-lg",
      "bg-gradient-to-r",
      "bg-gradient-to-br",
      "backdrop-blur",
      "backdrop-blur-sm",
      "backdrop-blur-md",
      "shadow-[0_0_16px_rgba",
      "shadow-[0_0_20px_rgba",
      "text-[#ff00ff]",
      "text-[#00ffff]"
    ],
    "patterns": [
      "^rounded-(?:full|2xl|xl|lg)",
      "^bg-gradient",
      "^backdrop-blur",
      "^shadow-\\[0_0_\\d+px_rgba"
    ],
    "reasons": {
      "rounded-full": "Ukiyo-e uses sharp edges (rounded-sm) to emulate woodblock print",
      "bg-gradient-to-r": "Ukiyo-e uses flat solid colors, not gradients",
      "backdrop-blur": "Ukiyo-e uses flat opaque surfaces, not transparency effects",
      "shadow-[0_0_16px_rgba": "Ukiyo-e uses hard-edge block shadows, not soft glow"
    }
  },
  "required": {
    "button": [
      "rounded-sm",
      "border-2",
      "shadow-[3px_3px_0px_#1a3055]",
      "font-bold tracking-wider",
      "transition-all duration-300 ease-in-out"
    ],
    "card": [
      "rounded-sm",
      "bg-[#f5f0e1]",
      "border-2 border-[#1a3055]",
      "shadow-[4px_4px_0px_#1a3055]"
    ],
    "input": [
      "rounded-sm",
      "border-2 border-[#1a3055]/60",
      "bg-[#f5f0e1]",
      "text-[#1a3055]",
      "focus:border-[#d4553a]",
      "focus:outline-none"
    ]
  }
}