/* 启动页。初始化完成前盖住首页。 */

.boot {
  position: fixed;
  inset: 0;
  z-index: 4000;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: #fff;
  padding:
    env(safe-area-inset-top)
    env(safe-area-inset-right)
    env(safe-area-inset-bottom)
    env(safe-area-inset-left);
}

.boot[hidden] { display: none; }

.boot-splash {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center;
}

.boot.is-done {
  opacity: 0;
  pointer-events: none;
  transition: opacity 280ms ease;
}

body.is-booting .navbar,
body.is-booting .page,
body.is-booting .tabbar,
body.is-booting .ptr,
body.is-booting .announce,
body.is-booting .toast,
body.is-booting .sheet,
body.is-booting .sheet-mask {
  visibility: hidden !important;
}

@media (prefers-reduced-motion: reduce) {
  .boot.is-done { transition: none; }
}