:root {
    --primary: #2c3e50;
    --secondary: #4ca1af;
    --accent: #e67e22;
    --success: #27ae60;
    --text: #ecf0f1;
    --light-bg: #34495e;
    --dark-bg: #1a252f;
    --gradient: linear-gradient(135deg, var(--primary), var(--secondary));
  }

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

  body {
    font-family: 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
    background: var(--gradient);
    color: var(--text);
    line-height: 1.6;
    padding-top: 80px;
  }

  .header {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(26, 37, 47, 0.95);
    padding: 1rem 5%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 1000;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.2);
    backdrop-filter: blur(10px);
  }

  .header-title {
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(90deg, var(--accent), var(--success));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
  }

  .reference-badge {
    background: var(--accent);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 600;
    box-shadow: 0 4px 15px rgba(230, 126, 34, 0.3);
  }

  .main-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
  }

  article {
    background: rgba(52, 73, 94, 0.7);
    border-radius: 16px;
    padding: 3rem;
    margin-bottom: 3rem;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
  }

  h2 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
    color: white;
    position: relative;
    padding-bottom: 0.5rem;
  }

  h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100px;
    height: 4px;
    background: linear-gradient(90deg, var(--accent), var(--success));
    border-radius: 2px;
  }

  h3 {
    font-size: 1.5rem;
    margin: 2rem 0 1rem;
    color: var(--accent);
  }

  p {
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
    color: rgba(236, 240, 241, 0.9);
  }

  color {
    color: var(--accent);
    font-weight: 600;
  }

  pre {
    background: var(--dark-bg);
    border-radius: 8px;
    padding: 1.5rem;
    margin: 2rem 0;
    overflow-x: auto;
    box-shadow: inset 0 0 10px rgba(0, 0, 0, 0.3);
    border-left: 4px solid var(--accent);
  }

  code {
    font-family: 'Fira Code', monospace;
    color: #f8f8f2;
    font-size: 0.9rem;
  }

  .image-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
    margin: 3rem 0;
  }

  .decor-image {
    width: 100%;
    height: 300px;
    object-fit: cover;
    border-radius: 12px;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
  }

  .decor-image:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.3);
  }

  table {
    width: 100%;
    border-collapse: collapse;
    margin: 2rem 0;
    background: var(--light-bg);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
  }

  th, td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  }

  th {
    background: var(--primary);
    color: white;
    font-weight: 600;
  }

  tr:hover {
    background: rgba(255, 255, 255, 0.05);
  }

  .nav-links {
    display: flex;
    gap: 1.5rem;
    margin: 2rem 0;
    flex-wrap: wrap;
  }

  .nav-link {
    padding: 0.8rem 1.5rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50px;
    color: white;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
  }

  .nav-link:hover {
    background: var(--accent);
    transform: translateY(-2px);
  }

  @media (max-width: 768px) {
    .main-container {
      padding: 1rem;
    }
    
    article {
      padding: 2rem 1.5rem;
    }
    
    .image-grid {
      grid-template-columns: 1fr;
    }
  }