header {
    background: linear-gradient(135deg, #1677ff, #4096ff);
    color: #fff;
    padding: 32px 16px 28px;
    text-align: center;
  }

  header h1 {
    margin: 0;
    font-size: 28px;
    font-weight: 600;
  }

  header p {
    margin-top: 8px;
    font-size: 14px;
    opacity: 0.9;
  }