```vue
<script setup>
import { computed } from 'vue'

const props = defineProps({
  node: {
    type: Object,
    required: true,
  },
})

// 获取代码语言
const language = computed(() => {
  const className = props.node.properties.class ?? props.node.properties.class ?? ''
  const classes = Array.isArray(className)
    ? className
    : String(className).split(/\s+/)
  console.log(classes)

  return classes
    .find(item => item.startsWith('language-'))
    ?.slice('language-'.length) ?? ''
})

const getTextContent = (children) => {
  const result = [];
  const stack = [...children].reverse();

  while (stack.length > 0) {
    const node = stack.pop();

    if (node.type === "text") {
      result.push(node.value);
    } else if (node.children) {
      stack.push(...node.children.reverse());
    }
  }

  return result.join("");
};

// 获取代码文本
const codeText = computed(() => {
  return getTextContent(props.node.children);
})

// 解析名片 JSON
const card = computed(() => {
  if (language.value !== 'card') return null

  try {
    return JSON.parse(codeText.value)
  } catch (error) {
    console.error('名片 JSON 解析失败：', error)
    return null
  }
})
</script>

<template>
  <div v-if="language === 'card' && card" class="business-card">
    <div class="card-header">
      <div class="avatar">
        {{ card.name?.charAt(0) || '?' }}
      </div>

      <div class="person">
        <div class="name">{{ card.name }}</div>
        <div class="department">{{ card.department }}</div>
      </div>
    </div>

    <div class="card-divider"></div>

    <div class="card-info">
      <div v-if="card.company" class="info-item">
        <span class="label">公司</span>
        <span>{{ card.company }}</span>
      </div>

      <div v-if="card.tel" class="info-item">
        <span class="label">电话</span>
        <span>{{ card.tel }}</span>
      </div>

      <div v-if="card.phone" class="info-item">
        <span class="label">手机</span>
        <span>{{ card.phone }}</span>
      </div>
    </div>
  </div>

  <div v-else class="code-block">
    <div class="code-header">
      <span>{{ language || 'Code' }}</span>
      <button>复制</button>
    </div>

    <pre><slot /></pre>
  </div>
</template>

<style scoped>
.business-card {
  max-width: 420px;
  padding: 20px;
  border: 1px solid #ddd;
  border-radius: 12px;
  background: white;
  color: #222;
}

.card-header {
  display: flex;
  align-items: center;
  gap: 14px;
}

.avatar {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: #e8efff;
  color: #3565b8;
  font-size: 20px;
  font-weight: 600;
}

.name {
  font-size: 18px;
  font-weight: 600;
}

.department {
  margin-top: 4px;
  color: #888;
  font-size: 13px;
}

.card-divider {
  height: 1px;
  margin: 18px 0;
  background: #eee;
}

.card-info {
  display: grid;
  gap: 12px;
}

.info-item {
  display: flex;
  gap: 16px;
  font-size: 14px;
}

.label {
  width: 40px;
  flex-shrink: 0;
  color: #999;
}

.code-block {
  border: 1px solid #ddd;
  border-radius: 8px;
  overflow: hidden;
}

.code-header {
  display: flex;
  justify-content: space-between;
  padding: 8px 12px;
  background: #f5f5f5;
}

pre {
  padding: 12px;
  overflow-x: auto;
  margin: 0;
}
</style>
```