/* 全屏画布，无滚动，适配刘海屏与微信内置浏览器 */
html, body {
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: #062b4a;
  overscroll-behavior: none;
  touch-action: none;
  -webkit-user-select: none;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
  -webkit-touch-callout: none;
}
#game {
  display: block;
  width: 100%;
  height: 100%;
  touch-action: none;
}
/* 首屏加载 */
#splash {
  position: fixed;
  inset: 0;
  z-index: 10;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 18px;
  background: radial-gradient(120% 90% at 50% 20%, #0a4a7a 0%, #062b4a 55%, #031a30 100%);
  font-family: -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
  color: #bfe3ff;
}
#splash .spinner {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  border: 4px solid rgba(191, 227, 255, 0.25);
  border-top-color: #ffd257;
  animation: spin 0.9s linear infinite;
}
#splash .splash-text { font-size: 15px; letter-spacing: 4px; opacity: 0.9; }
@keyframes spin { to { transform: rotate(360deg); } }