.page-container {
  padding: 20px;
  min-height: 100vh;
  background: #f5f5f5;
}

.page-header {
  margin-bottom: 20px;
}

.page-title {
  display: block;
  font-size: 24px;
  font-weight: 600;
  color: #333;
  margin-bottom: 8px;
}

.page-subtitle {
  display: block;
  font-size: 14px;
  color: #999;
}

.page-content {
  background: #fff;
  border-radius: 4px;
  padding: 24px;
}

.placeholder-card {
  text-align: center;
  padding: 60px 20px;
}

.placeholder-title {
  display: block;
  font-size: 18px;
  font-weight: 600;
  color: #666;
  margin-bottom: 12px;
}

.placeholder-desc {
  display: block;
  font-size: 14px;
  color: #999;
  margin-bottom: 8px;
}

.placeholder-info {
  display: block;
  font-size: 12px;
  color: #1890ff;
}