<!-- 农技知识图标：书本/灯泡 -->
<template>
  <svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="#4CAF50" stroke-width="2" stroke-linecap="round" stroke-linejoin="round">
    <!-- 书本 -->
    <path d="M4 19.5A2.5 2.5 0 0 1 6.5 17H20"></path>
    <path d="M6.5 2H20v20H6.5A2.5 2.5 0 0 1 4 19.5v-15A2.5 2.5 0 0 1 6.5 2z"></path>
    <!-- 灯泡 -->
    <circle cx="12" cy="9" r="3"></circle>
    <line x1="12" y1="12" x2="12" y2="14"></line>
    <path d="M10 14h4"></path>
  </svg>
</template> 