html,
body {
  font-family: 'Knewave', "PingFang SC", "Microsoft YaHei", sans-serif;
  touch-action: manipulation;
}

#who {
  display: none !important;
}

#small {
  letter-spacing: 0.2em;
}

.page-source {
  position: fixed;
  left: 50%;
  bottom: max(14px, env(safe-area-inset-bottom, 0px) + 6px);
  transform: translateX(-50%);
  margin: 0;
  padding: 5px 12px;
  font: 600 12px/1.4 "PingFang SC", "Microsoft YaHei", sans-serif;
  color: rgba(255, 255, 255, 0.92);
  background: rgba(0, 0, 0, 0.78);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 6px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.4);
  text-align: center;
  pointer-events: none;
  user-select: none;
  white-space: nowrap;
  z-index: 100000;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
}

.page-source-link {
  color: #9ec5ff;
  text-decoration: underline;
  cursor: default;
}

.mobile-intro {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: none;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.55);
  padding:
    max(16px, env(safe-area-inset-top, 0px) + 8px)
    16px
    max(16px, env(safe-area-inset-bottom, 0px) + 8px);
  box-sizing: border-box;
}

.mobile-intro.is-visible {
  display: flex;
}

#mobileInfo {
  width: min(88%, 320px);
  padding: 20px 16px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.96);
  color: #222;
  text-align: center;
  line-height: 1.6;
  font-size: 15px;
}

#mobileInfoSound {
  margin: 10px 0 0;
  font-size: 13px;
  color: #666;
}

#mobileInfoCloseButton {
  display: inline-block;
  margin: 18px 0 0;
  padding: 10px 28px;
  border: none;
  border-radius: 8px;
  background: #000;
  color: #fff;
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
}

@media (max-width: 640px) {
  .page-source {
    font-size: 11px;
    padding: 4px 10px;
    bottom: max(12px, env(safe-area-inset-bottom, 0px) + 4px);
    max-width: calc(100vw - 72px - env(safe-area-inset-left, 0px) - env(safe-area-inset-right, 0px));
  }
}

@media (min-width: 641px) and (max-width: 1024px) {
  .page-source {
    font-size: 12px;
    bottom: max(16px, env(safe-area-inset-bottom, 0px) + 8px);
  }
}