/* 全局样式 */
  * {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }

  body {
    font-family: 'Roboto', sans-serif;
    background: linear-gradient(135deg, #032B44, #2ECC71);
    color: #FFFFFF;
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 20px;
    min-height: 100vh;
    background-size: 400% 400%;
    animation: gradient-animation 15s ease infinite;
  }

  @keyframes gradient-animation {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
  }

  header {
    width: 100%;
    text-align: center;
    padding: 40px 20px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 15px;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
    margin-bottom: 20px;
  }

  header h1 {
    font-size: 2.5rem;
    color: #FFFFFF;
  }

  main {
    width: 100%;
    max-width: 1200px;
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
    padding: 20px;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(20px);
    border-radius: 20px;
    box-shadow: 0 8px 60px rgba(0, 0, 0, 0.2);
  }

  .section-title {
    font-size: 1.8rem;
    margin-bottom: 15px;
    color: #FFA726;
  }

  article {
    background: rgba(255, 255, 255, 0.2);
    padding: 20px;
    border-radius: 15px;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
    margin-bottom: 20px;
  }

  article h2, article h3, article h4 {
    color: #2ECC71;
    margin-bottom: 10px;
  }

  article p {
    margin-bottom: 10px;
  }

  article ul {
    list-style: disc inside;
    margin-bottom: 10px;
  }

  pre {
    background: #1E1E1E;
    padding: 15px;
    border-radius: 10px;
    overflow-x: auto;
    margin-bottom: 20px;
  }

  code {
    color: #00FF00;
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.95rem;
  }

  table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 20px;
  }

  table, th, td {
    border: 1px solid #FFA726;
  }

  th, td {
    padding: 10px;
    text-align: left;
  }

  th {
    background: rgba(255, 167, 38, 0.5);
  }

  .modules {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
  }

  .module {
    background: rgba(255, 255, 255, 0.1);
    padding: 15px;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .module img {
    width: 80px;
    height: 80px;
    margin-bottom: 10px;
  }

  .module h4 {
    margin-bottom: 10px;
    color: #FFFFFF;
  }

  .module p {
    color: #D3D3D3;
    font-size: 0.9rem;
  }

  footer {
    margin-top: 20px;
    padding: 20px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 15px;
    text-align: center;
    color: #FFFFFF;
  }

  .demo-note {
    background: rgba(255, 255, 255, 0.2);
    padding: 15px;
    border-radius: 10px;
    margin-bottom: 20px;
    font-size: 1rem;
    color: #FFA726;
  }

  @media (min-width: 320px) {
    header h1 {
      font-size: 2rem;
    }
  }

  @media (min-width: 480px) {
    header h1 {
      font-size: 2.5rem;
    }
  }

  @media (min-width: 768px) {
    main {
      grid-template-columns: 2fr 1fr;
    }
  }

  @media (min-width: 1024px) {
    main {
      grid-template-columns: 3fr 1fr;
    }
  }

  @media (min-width: 1200px) {
    header h1 {
      font-size: 3rem;
    }

    article {
      padding: 30px;
    }
  }

  @media (min-width: 1440px) {
    header h1 {
      font-size: 3.5rem;
    }

    .module img {
      width: 100px;
      height: 100px;
    }
  }