html,
body {
  padding: 0;
  margin: 0;
  width: 100vw;
  height: 100vh;
  height: 100svh;
  -webkit-font-smoothing: antialiased;
  -moz-font-smoothing: grayscale;
  font-family: Arial, sans-serif;
}
* {
  box-sizing: border-box;
}
.container {
  display: flex;
  flex-direction: column;
  height: 100%;
  position: relative;
}
.iframe-container {
  position: relative;
  width: 100%;
  flex: 1;
  display: flex;
}
.iframe-container > iframe {
  border: 0;
  width: 100%;
  flex: 1;
}
.c-clicker {
  position: absolute;
  width: 100%;
  height: 100vh;
  top: 0;
  left: 0;
  z-index: 100;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}
.c-audio {
  display: none;
}
.p-lang_list,
.p-lang_item {
  margin: 0;
  padding: 0;
  list-style: none;
}
.p-lang {
  position: absolute;
  left: 50px;
  bottom: 16px;
  z-index: 10;
  opacity: 0;
  pointer-events: none;
}
.is-start .p-lang {
  opacity: 1;
  transition: opacity 0.5s 0.5s;
  pointer-events: auto;
}
.p-lang_list {
  display: flex;
}
.p-lang_item + .p-lang_item::before {
  padding-left: 1px;
  content: '/';
  color: #fff;
  font-size: 14px;
  line-height: 1.2;
}
.c-btn {
  background-color: transparent;
  border: none;
  padding: 4px;
  color: #fff;
  cursor: pointer;
  transition: 0.2s;
  position: relative;
  font-size: 11px;
  font-weight: bold;
  font-family: Arial, sans-serif;
  -webkit-tap-highlight-color: transparent;
  line-height: 1.2;
}
@media (hover: hover) {
  .c-btn:hover {
    opacity: 0.6;
  }
}
.c-btn.is-active {
  pointer-events: none;
}
.c-btn.is-active::after {
  content: '';
  position: absolute;
  bottom: 3px;
  left: 4px;
  width: calc(100% - 8px);
  height: 1px;
  background-color: #fff;
}