.yt-lite {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 9; /* 自动保持比例 */
    background-color: #000;
    background-size: cover;
    background-position: center;
    cursor: pointer;
    overflow: hidden;
    display: block; /* 防止在 inline 布局时被压缩变形 */
}

.yt-lite > .play {
    width: 68px;
    height: 48px;
    background: #ff0000;
    border-radius: 20%;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.yt-lite > .play::before {
    content: '';
    border-style: solid;
    border-width: 15px 0 15px 26px;
    border-color: transparent transparent transparent #fff;
    position: absolute;
    left: 25px;
    top: 10px;
}