.title-bar {    padding: 15px;    text-align: center;    background: #111;    font-size: 20px;    color: #fff;}.player-wrapper {    position: relative;    width: 100%;}.dplayer-box {    width: 100%;    aspect-ratio: 16 / 9;    height: auto;}@media screen and (orientation: portrait) {    .dplayer-box {        height: 240px;        aspect-ratio: auto;    }}.loading-overlay {    position: absolute;    top: 0; left: 0; right: 0; bottom: 0;    background: rgba(0,0,0,0.5);    color: #fff;    text-align: center;    line-height: 300px;    font-size: 16px;    z-index: 10;}