page {
  background-color: #F5F7FA;
  font-size: 28px;
  color: #333;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
}

.container {
  padding: 30px;
}

.btn {
  padding: 20px 40px;
  background-color: #4A90E2;
  color: #fff;
  border-radius: 10px;
  border: none;
  font-size: 30px;
  
  &.btn-outline {
    background-color: transparent;
    border: 2px solid #4A90E2;
    color: #4A90E2;
  }
  
  &.btn-danger {
    background-color: #e74c3c;
  }
  
  &.btn-success {
    background-color: #2ecc71;
  }
  
  &:active {
    opacity: 0.8;
  }
}

.card {
  background-color: #fff;
  border-radius: 16px;
  padding: 30px;
  margin-bottom: 20px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.title {
  font-size: 36px;
  font-weight: bold;
  margin-bottom: 20px;
  color: #333;
}

.subtitle {
  font-size: 28px;
  color: #666;
  margin-bottom: 15px;
}

.text-center {
  text-align: center;
}

.flex {
  display: flex;
}

.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}

.flex-between {
  display: flex;
  justify-content: space-between;
  align-items: center;
}