html, body {
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    background: #6a707a url(background.png) no-repeat center center fixed;
    background-size: cover;
    -webkit-user-select: none;
    user-select: none;
    -webkit-touch-callout: none;
    -webkit-tap-highlight-color: transparent;
    touch-action: none;
}

#embed-html {
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
}

#embed-html canvas {
    display: block;
    outline: none;
}

/* игра только горизонтальная: в портрете — «Поверните телефон» (картинка из сборок ОК/Яндекса), игра на паузе */
#pk-rotate {
    position: fixed;
    inset: 0;
    z-index: 20;
    background: #1d4f8c;
    display: flex;
    align-items: center;
    justify-content: center;
}
#pk-rotate[hidden] {
    display: none;
}
#pk-rotate div {
    width: 200px;
    height: 200px;
    background: url(rotate.png) center / contain no-repeat;
}

/* загрузка — как в сборках ОК/Яндекса */
.lds-spinner {
  color: official;
  display: inline-block;
  width: 80px;
  height: 80px;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}
.lds-spinner div {
  transform-origin: 40px 40px;
  animation: lds-spinner 1.2s linear infinite;
}
.lds-spinner div:after {
  content: " ";
  display: block;
  position: absolute;
  top: 3px;
  left: 37px;
  width: 6px;
  height: 18px;
  border-radius: 20%;
  background: #fff;
}
.lds-spinner div:nth-child(1) { transform: rotate(0deg); animation-delay: -1.1s; }
.lds-spinner div:nth-child(2) { transform: rotate(30deg); animation-delay: -1s; }
.lds-spinner div:nth-child(3) { transform: rotate(60deg); animation-delay: -0.9s; }
.lds-spinner div:nth-child(4) { transform: rotate(90deg); animation-delay: -0.8s; }
.lds-spinner div:nth-child(5) { transform: rotate(120deg); animation-delay: -0.7s; }
.lds-spinner div:nth-child(6) { transform: rotate(150deg); animation-delay: -0.6s; }
.lds-spinner div:nth-child(7) { transform: rotate(180deg); animation-delay: -0.5s; }
.lds-spinner div:nth-child(8) { transform: rotate(210deg); animation-delay: -0.4s; }
.lds-spinner div:nth-child(9) { transform: rotate(240deg); animation-delay: -0.3s; }
.lds-spinner div:nth-child(10) { transform: rotate(270deg); animation-delay: -0.2s; }
.lds-spinner div:nth-child(11) { transform: rotate(300deg); animation-delay: -0.1s; }
.lds-spinner div:nth-child(12) { transform: rotate(330deg); animation-delay: 0s; }
@keyframes lds-spinner {
  0% { opacity: 1; }
  100% { opacity: 0; }
}