/* 全局样式 */
  body {
    margin: 0;
    padding: 0;
    background: linear-gradient(135deg, #0d1b2a, #1b263b);
    color: #ffffff;
    font-family: 'Roboto', sans-serif;
    line-height: 1.6;
  }

  a {
    color: #f0f0f0;
    text-decoration: none;
    rel: nofollow;
  }

  a:hover {
    color: #ff6f61;
  }

  header {
    background: linear-gradient(90deg, #1b263b, #415a77);
    padding: 20px;
    text-align: center;
    position: sticky;
    top: 0;
    z-index: 1000;
  }

  header h1 {
    margin: 0;
    font-size: 2em;
    color: #e0aaff;
    font-family: 'Helvetica Neue', sans-serif;
    letter-spacing: 2px;
  }

  nav {
    margin-top: 10px;
  }

  nav a {
    margin: 0 15px;
    font-size: 1em;
    transition: color 0.3s ease;
  }

  .container {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
    padding: 20px;
  }

  @media (min-width: 480px) {
    .container {
      grid-template-columns: repeat(2, 1fr);
    }
  }

  @media (min-width: 768px) {
    .container {
      grid-template-columns: repeat(3, 1fr);
    }
  }

  @media (min-width: 1024px) {
    .container {
      grid-template-columns: repeat(4, 1fr);
    }
  }

  .card {
    background: #334e68;
    border-radius: 10px;
    padding: 15px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.3);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
  }

  .card:hover {
    transform: translateY(-10px);
    box-shadow: 0 8px 16px rgba(0,0,0,0.5);
  }

  .card img {
    width: 100%;
    border-radius: 10px;
  }

  .card h3 {
    margin-top: 10px;
    font-family: 'Helvetica Neue', sans-serif;
    color: #e0aaff;
  }

  .card p {
    font-size: 0.9em;
    color: #c0c0c0;
  }

  footer {
    background: linear-gradient(90deg, #415a77, #1b263b);
    padding: 20px;
    text-align: center;
    color: #ffffff;
  }

  pre {
    background: #223344;
    padding: 10px;
    border-radius: 5px;
    overflow-x: auto;
  }

  code {
    color: #ff6f61;
    font-family: 'Courier New', monospace;
  }

  button {
    background-color: #e0aaff;
    color: #1b263b;
    border: none;
    padding: 10px 20px;
    border-radius: 5px;
    cursor: pointer;
    transition: transform 0.3s ease, background-color 0.3s ease;
    font-size: 1em;
  }

  button:hover {
    transform: scale(1.05);
    background-color: #c77dff;
  }

  .example-section {
    background: #1b263b;
    padding: 20px;
    border-radius: 10px;
    margin: 20px;
  }

  .example-section h2 {
    color: #ff6f61;
    font-family: 'Helvetica Neue', sans-serif;
    margin-bottom: 15px;
  }

  .example-section pre {
    background: #0d1b2a;
    padding: 15px;
    border-radius: 5px;
    overflow-x: auto;
  }

  .tag {
    display: inline-block;
    background: #415a77;
    color: #e0aaff;
    padding: 5px 10px;
    border-radius: 20px;
    margin: 5px 5px 0 0;
    font-size: 0.8em;
  }

  .gradient-text {
    background: linear-gradient(45deg, #e0aaff, #ff6f61);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
  }

  .notice {
    text-align: center;
    font-size: 1.2em;
    margin: 20px 0;
    color: #ff6f61;
    font-weight: bold;
  }