:root {
    --primary: #0B2447;
    --secondary: #F5F7FA;
    --accent: #FFA500;
    --highlight: #4CAF50;
    --text: #333;
    --light: #FFF;
    --shadow: 0 4px 20px rgba(0,0,0,0.08);
  }

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

  body {
    font-family: 'Roboto', sans-serif;
    color: var(--text);
    background: var(--secondary);
    line-height: 1.6;
    overflow-x: hidden;
  }

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

  .notice {
    background: linear-gradient(135deg, var(--primary), #193A6F);
    color: white;
    padding: 15px;
    text-align: center;
    font-size: 14px;
    margin-bottom: 30px;
    border-radius: 0 0 8px 8px;
    box-shadow: var(--shadow);
  }

  header {
    background: var(--light);
    padding: 40px 0;
    margin-bottom: 50px;
    position: relative;
    overflow: hidden;
  }

  header::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, rgba(255,165,0,0.05), rgba(76,175,80,0.05));
    z-index: 0;
  }

  .header-content {
    position: relative;
    z-index: 1;
    text-align: center;
  }

  h1 {
    font-size: 2.5rem;
    margin-bottom: 20px;
    color: var(--primary);
    background: linear-gradient(90deg, var(--primary), var(--highlight));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
  }

  .header-image {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-top: 40px;
    flex-wrap: wrap;
  }

  .header-image img {
    width: 150px;
    height: 150px;
    object-fit: cover;
    border-radius: 16px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
  }

  .header-image img:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0,0,0,0.2);
  }

  article {
    background: white;
    padding: 50px;
    border-radius: 16px;
    box-shadow: var(--shadow);
    margin-bottom: 50px;
  }

  h2 {
    font-size: 1.8rem;
    margin: 30px 0 20px;
    color: var(--primary);
    position: relative;
    padding-bottom: 10px;
  }

  h2::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 80px;
    height: 3px;
    background: linear-gradient(90deg, var(--accent), var(--highlight));
    border-radius: 3px;
  }

  h3 {
    font-size: 1.4rem;
    margin: 25px 0 15px;
    color: var(--primary);
  }

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

  pre {
    background: #f8f8f8;
    padding: 20px;
    border-radius: 8px;
    overflow-x: auto;
    margin: 25px 0;
    border-left: 4px solid var(--highlight);
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    line-height: 1.5;
  }

  code {
    background: #f0f0f0;
    padding: 2px 6px;
    border-radius: 4px;
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    color: #d63384;
  }

  strong {
    color: var(--primary);
  }

  .image-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin: 40px 0;
  }

  .gallery-item {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
  }

  .gallery-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.15);
  }

  .gallery-item img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-bottom: 1px solid #eee;
  }

  .gallery-content {
    padding: 20px;
  }

  .gallery-content h4 {
    margin-bottom: 10px;
    color: var(--primary);
  }

  .gallery-content p {
    font-size: 0.95rem;
    color: #666;
  }

  .feature-list {
    list-style: none;
    margin: 15px 0;
  }

  .feature-list li {
    padding: 8px 0;
    position: relative;
    padding-left: 25px;
  }

  .feature-list li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 15px;
    width: 10px;
    height: 2px;
    background: var(--highlight);
  }

  .nav-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin: 30px 0;
    position: sticky;
    top: 20px;
    z-index: 100;
    background: white;
    padding: 15px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
  }

  .nav-tabs a {
    display: inline-block;
    padding: 8px 16px;
    background: #f0f0f0;
    color: var(--text);
    text-decoration: none;
    border-radius: 20px;
    transition: all 0.3s ease;
    font-size: 0.9rem;
  }

  .nav-tabs a:hover {
    background: var(--highlight);
    color: white;
  }

  @media (max-width: 768px) {
    article {
      padding: 30px 20px;
    }
    
    h1 {
      font-size: 2rem;
    }
    
    h2 {
      font-size: 1.5rem;
    }
    
    h3 {
      font-size: 1.2rem;
    }
    
    .header-image img {
      width: 120px;
      height: 120px;
    }
  }

  @media (max-width: 480px) {
    .header-image {
      gap: 15px;
    }
    
    .header-image img {
      width: 100px;
      height: 100px;
    }
    
    .nav-tabs {
      justify-content: center;
    }
  }