:root {
    --primary: #1e3c72;
    --secondary: #2a5298;
    --accent: #ff6f61;
    --accent-pink: #ff8fab;
    --light: rgba(255,255,255,0.1);
    --text: #ffffff;
    --text-light: #cccccc;
  }

  * {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }

  body {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: var(--text);
    font-family: 'Roboto', sans-serif;
    line-height: 1.6;
    padding: 0;
    margin: 0;
    overflow-x: hidden;
  }

  .container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
  }

  .header {
    text-align: center;
    padding: 60px 0 40px;
    position: relative;
  }

  .header::after {
    content: "这是一个网页样式设计参考";
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    color: var(--accent);
    font-size: 14px;
    font-weight: bold;
  }

  h1, h2, h3, h4 {
    margin-bottom: 20px;
    font-weight: 500;
  }

  h2 {
    font-size: 28px;
    background: linear-gradient(90deg, var(--accent), var(--accent-pink));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    padding-bottom: 10px;
    border-bottom: 1px solid rgba(255,255,255,0.2);
    margin-top: 40px;
  }

  h3 {
    font-size: 22px;
    color: var(--text);
    margin-top: 30px;
  }

  p {
    margin-bottom: 20px;
    font-size: 17px;
  }

  .content-block {
    background: rgba(0,0,0,0.2);
    border-radius: 15px;
    padding: 30px;
    margin-bottom: 40px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
    transition: transform 0.3s ease;
  }

  .content-block:hover {
    transform: translateY(-5px);
  }

  pre {
    background: rgba(0,0,0,0.3);
    border-radius: 10px;
    padding: 20px;
    margin: 25px 0;
    overflow: hidden;
    position: relative;
  }

  pre::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(to bottom, var(--accent), var(--accent-pink));
  }

  code {
    font-family: 'Courier New', monospace;
    font-size: 15px;
    color: #f8f8f2;
  }

  .card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
    margin: 30px 0;
  }

  .card {
    background: rgba(255,255,255,0.05);
    border-radius: 15px;
    padding: 25px;
    transition: all 0.3s ease;
    border: 1px solid rgba(255,255,255,0.1);
  }

  .card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0,0,0,0.3);
    background: rgba(255,255,255,0.1);
  }

  .card h4 {
    color: var(--accent);
    margin-bottom: 15px;
    font-size: 18px;
  }

  .card p {
    font-size: 15px;
    color: var(--text-light);
  }

  .image-gallery {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    margin: 30px 0;
    justify-content: center;
  }

  .gallery-img {
    width: 150px;
    height: 150px;
    border-radius: 15px;
    object-fit: cover;
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
    transition: all 0.3s ease;
  }

  .gallery-img:hover {
    transform: scale(1.05);
    box-shadow: 0 10px 25px rgba(0,0,0,0.3);
  }

  .nav-links {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin: 40px 0;
    flex-wrap: wrap;
  }

  .nav-link {
    color: var(--text);
    text-decoration: none;
    padding: 10px 20px;
    border-radius: 30px;
    background: rgba(255,255,255,0.1);
    transition: all 0.3s ease;
    font-size: 15px;
    border: 1px solid rgba(255,255,255,0.2);
  }

  .nav-link:hover {
    background: linear-gradient(45deg, var(--accent), var(--accent-pink));
    color: white;
    transform: translateY(-3px);
  }

  .accent {
    color: var(--accent);
  }

  .accent-pink {
    color: var(--accent-pink);
  }

  .footer {
    text-align: center;
    padding: 40px 0;
    margin-top: 60px;
    border-top: 1px solid rgba(255,255,255,0.1);
  }

  @media (max-width: 768px) {
    .content-block {
      padding: 20px;
    }
    
    h2 {
      font-size: 24px;
    }
    
    h3 {
      font-size: 20px;
    }
    
    .card-grid {
      grid-template-columns: 1fr;
    }
    
    .gallery-img {
      width: 120px;
      height: 120px;
    }
  }