:root {
    --primary: #0f2027;
    --secondary: #203a43;
    --accent: #20a8d8;
    --highlight: #f34f4f;
    --text: #ffffff;
    --card-bg: rgba(255, 255, 255, 0.1);
    --transition: all 0.3s ease;
  }

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

  body {
    background: linear-gradient(135deg, var(--primary), var(--secondary), #2c5364);
    color: var(--text);
    font-family: 'Roboto', sans-serif;
    line-height: 1.6;
    overflow-x: hidden;
  }

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

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

  header::after {
    content: '';
    display: block;
    width: 200px;
    height: 3px;
    background: linear-gradient(to right, var(--accent), var(--highlight));
    margin: 20px auto;
    border-radius: 3px;
  }

  h1, h2, h3, h4 {
    font-weight: 700;
    margin-bottom: 20px;
  }

  h1 {
    font-size: 2.5rem;
    background: linear-gradient(to right, var(--accent), var(--highlight));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
  }

  h2 {
    font-size: 1.8rem;
    color: var(--accent);
    position: relative;
    padding-bottom: 10px;
  }

  h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 50px;
    height: 2px;
    background: var(--highlight);
  }

  h3 {
    font-size: 1.5rem;
    color: var(--text);
    margin-top: 30px;
  }

  p {
    margin-bottom: 20px;
    font-size: 1.1rem;
  }

  .grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
    gap: 30px;
    margin: 40px 0;
  }

  .card {
    background: var(--card-bg);
    border-radius: 15px;
    padding: 30px;
    backdrop-filter: blur(10px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
    transition: var(--transition);
    border: 1px solid rgba(255, 255, 255, 0.1);
  }

  .card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.3);
    border-color: var(--accent);
  }

  .image-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 20px;
    margin: 30px 0;
  }

  .decorative-img {
    width: 100%;
    height: auto;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
    transition: var(--transition);
    object-fit: cover;
    aspect-ratio: 1/1;
  }

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

  pre {
    background: rgba(0, 0, 0, 0.3);
    border-radius: 10px;
    padding: 20px;
    margin: 20px 0;
    overflow: auto;
    border-left: 3px solid var(--accent);
    font-family: 'Courier New', monospace;
    line-height: 1.5;
  }

  code {
    font-family: 'Courier New', monospace;
    color: var(--accent);
  }

  .notice {
    background: rgba(255, 255, 255, 0.1);
    padding: 15px;
    border-radius: 8px;
    margin: 20px 0;
    border-left: 4px solid var(--highlight);
    font-style: italic;
  }

  .nav-links {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 15px;
    margin: 30px 0;
  }

  .nav-link {
    color: var(--text);
    text-decoration: none;
    padding: 10px 20px;
    border-radius: 30px;
    background: rgba(255, 255, 255, 0.1);
    transition: var(--transition);
    font-weight: 500;
  }

  .nav-link:hover {
    background: var(--accent);
    color: var(--primary);
  }

  .fade-in {
    opacity: 0;
    animation: fadeIn 1s forwards;
  }

  @keyframes fadeIn {
    to {
      opacity: 1;
    }
  }

  @media (max-width: 768px) {
    .grid {
      grid-template-columns: 1fr;
    }
    
    h1 {
      font-size: 2rem;
    }
    
    h2 {
      font-size: 1.5rem;
    }
  }