.install-tip {
  position: fixed;
  z-index: 20;
  left: 50%;
  bottom: calc(18px + env(safe-area-inset-bottom));
  transform: translateX(-50%);
  width: min(430px, calc(100% - 28px));
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  background: var(--ink);
  color: #fff;
  padding: 15px 16px 15px 18px;
  border-radius: 16px;
  box-shadow: 0 12px 40px rgba(0, 0, 0, .22);
}
.install-tip[hidden] { display: none; }
.install-tip div { display: flex; flex-direction: column; line-height: 1.35; }
.install-tip strong { font-size: 15px; }
.install-tip span { font-size: 13px; color: #c9cfdb; margin-top: 3px; }
.install-tip button {
  border: 0;
  background: #303541;
  color: #fff;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  font: 400 24px/1 var(--sans);
  flex: 0 0 auto;
  cursor: pointer;
}