/* 容器样式 */
        #earth-container {
    width: 1680px;
    height:725px;
    border-radius: 20px;
    overflow: hidden;
    position: relative;
    background: #ffffff24;
    margin-left: auto;
    margin-right: auto;
        }

        /* 画布填满容器 */
        canvas {
            position: absolute;
            top: 5%;
            left: 5%;
            width: 90%;
            height: 90%;
        }