* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html,
body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: #000;
}

body {
  position: fixed;
  width: 100%;
  height: 100%;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

canvas {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  touch-action: none;
  z-index: 0;
}

.overlay {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  display: flex;
  align-items: center;
  justify-content: center;
  user-select: none;
  -webkit-user-select: none;
  -webkit-tap-highlight-color: transparent;
}

.message {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.6rem;
  padding: 0 1.25rem;
  text-align: center;
}

.zh {
  font-weight: 300;
  font-size: clamp(28px, 3vw, 44px);
  color: rgba(245, 248, 252, 0.92);
  letter-spacing: 0.1em;
  line-height: 1.35;
}

.en {
  font-weight: 300;
  font-size: calc(clamp(28px, 3vw, 44px) * 0.36);
  color: rgba(220, 230, 240, 0.42);
  letter-spacing: 0.16em;
  line-height: 1.5;
  white-space: nowrap;
}

.brand {
  position: fixed;
  bottom: max(18px, env(safe-area-inset-bottom));
  left: 0;
  right: 0;
  text-align: center;
  font-size: 11px;
  letter-spacing: 0.3em;
  color: rgba(220, 230, 240, 1);
  opacity: 0.2;
  pointer-events: none;
}

@media (max-width: 700px) {
  .zh {
    font-size: clamp(24px, 8vw, 32px);
  }
  .en {
    font-size: calc(clamp(24px, 8vw, 32px) * 0.38);
  }
  .brand {
    font-size: 10px;
  }
}