body { padding: 0; margin: 0 }
#unity-container { position: absolute }
#unity-container.unity-desktop { left: 50%; top: 50%; transform: translate(-50%, -50%) }
#unity-container.unity-mobile { width: 100%; height: 100% }
#unity-canvas { background: #231F20 }
.unity-mobile #unity-canvas { width: 100%; height: 100% }
#unity-loading-bar { position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%); display: none }
/*#unity-logo { width: 154px; height: 130px; background: url('unity-logo-light.png') no-repeat center }*/
#unity-logo {
    width: 40vw;                /* 占屏幕宽度的 40%，自动适配 */
    max-width: 300px;           /* 最大宽度限制 */
    aspect-ratio: 1 / 1;        /* 保持正方形比例 */
    background: url('ram-medical-logo.png') no-repeat center;
    background-size: contain;   /* 自动缩放完整显示 */
    background-color: transparent;
    margin: 0 auto 10px;        /* 居中 */
}
/*#unity-progress-bar-empty { width: 141px; height: 18px; margin-top: 10px; margin-left: 6.5px; background: url('progress-bar-empty-light.png') no-repeat center }*/
/*#unity-progress-bar-full { width: 0%; height: 18px; margin-top: 10px; background: url('progress-bar-full-light.png') no-repeat center }*/

/* 父容器：居中 + 定位参照 */
#unity-progress-bar-empty {
    width: 141px;
    height: 18px;
    margin: 10px auto 0;                   /* 只这里居中 */
    background: url('progress-bar-empty-light.png') no-repeat center;
    background-size: contain;
    position: relative;                     /* 作为子元素绝对定位的参照 */
    overflow: hidden;                       /* 防止子元素越界 */
}

/* 子元素：从左边开始填充 */
#unity-progress-bar-full {
    width: 0%;                              /* Unity 会动态改这个百分比 */
    height: 100%;
    margin: 0;                              /* 取消 auto，避免被居中 */
    position: absolute;
    left: 0;
    top: 0;
    background: url('progress-bar-full-light.png') no-repeat left center;
    /* 通常不需要 contain；如果想铺满高度可用：background-size: 100% 100%; */
}
#unity-footer { position: relative }
.unity-mobile #unity-footer { display: none }
#unity-webgl-logo { float:left; width: 204px; height: 38px; background: url('webgl-logo.png') no-repeat center }
#unity-build-title { float: right; margin-right: 10px; line-height: 38px; font-family: arial; font-size: 18px }
#unity-fullscreen-button { float: right; width: 38px; height: 38px; background: url('fullscreen-button.png') no-repeat center }
#unity-warning { position: absolute; left: 50%; top: 5%; transform: translate(-50%); background: white; padding: 10px; display: none }