* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }
  body {
    font-family: 'Helvetica', sans-serif;
    background: linear-gradient(135deg, #000066, #4B0082, #8A2BE2);
    color: #ffffff;
    line-height: 1.6;
  }
  header {
    text-align: center;
    padding: 50px 20px;
    background: linear-gradient(45deg, #00FF7F, #FF4500, #87CEFA);
    border-bottom: 2px solid #ffffff;
  }
  header h1 {
    font-family: 'Roboto', sans-serif;
    font-weight: bold;
    font-size: 2.5rem;
  }
  section {
    padding: 60px 20px;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    background: rgba(0, 0, 0, 0.5);
  }
  .article, .sample-data {
    max-width: 800px;
    margin: 20px;
    padding: 20px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
  }
  h2, h3 {
    font-family: 'Roboto', sans-serif;
    color: #00FF7F;
    margin-bottom: 20px;
  }
  p {
    margin-bottom: 15px;
    font-size: 1rem;
  }
  pre {
    background: #1e1e1e;
    padding: 15px;
    border-radius: 5px;
    overflow-x: auto;
  }
  code {
    color: #00FF7F;
    font-family: 'Courier New', Courier, monospace;
  }
  img {
    width: 100%;
    max-width: 320px;
    margin: 10px;
    border-radius: 5px;
  }
  .footer {
    text-align: center;
    padding: 30px 20px;
    background: linear-gradient(135deg, #8A2BE2, #4B0082, #000066);
    border-top: 2px solid #ffffff;
    font-size: 0.9rem;
  }
  a {
    color: #FF4500;
    text-decoration: none;
  }
  a:hover {
    text-decoration: underline;
  }
  @media (max-width: 768px) {
    header h1 {
      font-size: 2rem;
    }
    section {
      flex-direction: column;
      align-items: center;
    }
    .article, .sample-data {
      max-width: 100%;
    }
  }