html, body { margin: 0; padding: 0; height: 100%; background: #ededed; }
#app { height: 100%; }
.nina-splash {
  position: fixed;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: linear-gradient(160deg, #ffeef5 0%, #fff7f0 50%, #f0f7ff 100%);
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
  z-index: 9999;
user-select: none;
}
.nina-splash-logo {
  width: 88px;
  height: 88px;
  border-radius: 22px;
  background: linear-gradient(135deg, #ff8da1 0%, #ffb088 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 44px;
  box-shadow: 0 12px 32px rgba(255, 141, 161, 0.35);
  margin-bottom: 24px;
  animation: nina-pulse 1.6s ease-in-out infinite;
}
.nina-splash-title {
  font-size: 18px;
  font-weight: 600;
  color: #444;
  margin-bottom: 28px;
  letter-spacing: 1px;
}
.nina-splash-spinner {
  width: 28px;
  height: 28px;
  border: 3px solid rgba(255, 141, 161, 0.25);
  border-top-color: #ff8da1;
  border-radius: 50%;
  animation: nina-spin 0.9s linear infinite;
}
.nina-splash-tip {
  margin-top: 16px;
  font-size: 12px;
  color: #999;
}
@keyframes nina-spin { to { transform: rotate(360deg); } }
@keyframes nina-pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.06); }
}