body {
    background: #0a0f1e; /* 深蓝背景 */
    color: #00ff66; /* 绿色字体 */
    font-family: 'Courier New', monospace;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100vh;
    margin: 0;
}

h1 {
    font-size: 24px;
    margin-bottom: 20px;
    color: #00ff66;
}

canvas {
    background: #0a0f1e;
}