body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB',
               'Microsoft YaHei', 'Helvetica Neue', Helvetica, Arial, sans-serif;
}

.app-loading {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, #002878 0%, #0044aa 100%);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 9999;
}

.app-loading-logo {
  width: 80px;
  height: 80px;
  background: rgba(255,255,255,0.2);
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 36px;
  color: white;
  font-weight: bold;
  margin-bottom: 24px;
  animation: pulse 1.5s ease-in-out infinite;
}

.app-loading-text {
  color: white;
  font-size: 18px;
  font-weight: 500;
  margin-bottom: 8px;
}

.app-loading-tip {
  color: rgba(255,255,255,0.7);
  font-size: 14px;
}

.app-loading-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid rgba(255,255,255,0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin-top: 24px;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.05); opacity: 0.9; }
}