初始提交：全国牛产业大数据中心大屏项目

public/texture/标注光圈.svg

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+<svg width="128" height="128" viewBox="0 0 128 128" xmlns="http://www.w3.org/2000/svg">
+  <defs>
+    <radialGradient id="haloGradient" cx="50%" cy="50%" r="50%">
+      <stop offset="0%" style="stop-color:#00ffff;stop-opacity:0" />
+      <stop offset="30%" style="stop-color:#00ffff;stop-opacity:0.2" />
+      <stop offset="60%" style="stop-color:#00ffff;stop-opacity:0.8" />
+      <stop offset="80%" style="stop-color:#0088ff;stop-opacity:0.6" />
+      <stop offset="100%" style="stop-color:#004488;stop-opacity:0" />
+    </radialGradient>
+    <filter id="blur">
+      <feGaussianBlur stdDeviation="2" result="coloredBlur"/>
+    </filter>
+  </defs>
+  
+  <!-- 外圈光晕 -->
+  <circle cx="64" cy="64" r="60" fill="none" stroke="url(#haloGradient)" stroke-width="8" opacity="0.4" filter="url(#blur)"/>
+  
+  <!-- 中圈光晕 -->
+  <circle cx="64" cy="64" r="45" fill="none" stroke="url(#haloGradient)" stroke-width="6" opacity="0.6" filter="url(#blur)"/>
+  
+  <!-- 内圈光晕 -->
+  <circle cx="64" cy="64" r="30" fill="none" stroke="url(#haloGradient)" stroke-width="4" opacity="0.8" filter="url(#blur)"/>
+  
+  <!-- 主体光圈 -->
+  <circle cx="64" cy="64" r="50" fill="url(#haloGradient)" opacity="0.3"/>
+</svg>