<!DOCTYPE html>
<html lang="zh">

<head>
    <meta charset="UTF-8">
    <title>太阳系动画</title>
    <style>
        /* 全屏Canvas */
        body,
        html {
            margin: 0;
            padding: 0;
            overflow: hidden;
            background-color: black;
        }

        canvas {
            display: block;
        }

        /* 计数器样式 */
        #counter {
            position: absolute;
            top: 10px;
            left: 10px;
            background: rgba(255