:root {
    --primary: #0d1b2a;
    --secondary: #415a77;
    --accent: #FFA500;
    --text: #ffffff;
    --highlight: #00BFFF;
    --card-bg: rgba(255, 255, 255, 0.1);
  }

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

  body {
    background: linear-gradient(135deg, var(--primary), var(--secondary), #778da9);
    color: var(--text);
    font-family: 'Roboto', sans-serif;
    line-height: 1.6;
    padding-top: 80px;
    min-height: 100%;
  }

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

  .navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(13, 27, 42, 0.9);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 40px;
    z-index: 1000;
    backdrop-filter: blur(5px);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
  }

  .navbar-logo {
    font-size: 24px;
    font-weight: 700;
    color: var(--text);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 10px;
  }

  .navbar-logo img {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    object-fit: cover;
  }

  .navbar-menu {
    display: flex;
    list-style: none;
    gap: 30px;
  }

  .navbar-link {
    color: var(--text);
    text-decoration: none;
    font-weight: 500;
    padding: 8px 12px;
    border-radius: 4px;
    transition: all 0.3s ease;
    position: relative;
  }

  .navbar-link:hover {
    color: var(--accent);
  }

  .navbar-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: width 0.3s ease;
  }

  .navbar-link:hover::after {
    width: 100%;
  }

  .hero {
    padding: 80px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
  }

  .hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 50% 50%, rgba(255, 165, 0, 0.1) 0%, transparent 70%);
    z-index: -1;
  }

  .hero-title {
    font-size: 48px;
    margin-bottom: 20px;
    background: linear-gradient(90deg, var(--highlight), var(--accent));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    animation: fadeIn 1s ease-out;
  }

  .hero-subtitle {
    font-size: 20px;
    max-width: 800px;
    margin: 0 auto 40px;
    opacity: 0.9;
  }

  .reference-banner {
    background: rgba(255, 255, 255, 0.1);
    padding: 15px;
    border-radius: 8px;
    margin: 40px auto;
    max-width: 800px;
    text-align: center;
    backdrop-filter: blur(5px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  }

  .article-container {
    background: rgba(13, 27, 42, 0.7);
    border-radius: 15px;
    padding: 40px;
    margin: 40px 0;
    backdrop-filter: blur(10px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
  }

  article h2 {
    font-size: 28px;
    margin: 40px 0 20px;
    color: var(--highlight);
    position: relative;
    padding-left: 20px;
  }

  article h2::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    height: 70%;
    width: 5px;
    background: var(--accent);
    border-radius: 5px;
  }

  article p {
    margin-bottom: 20px;
    font-size: 17px;
    line-height: 1.7;
  }

  pre {
    background: rgba(0, 0, 0, 0.3);
    border-radius: 8px;
    padding: 20px;
    margin: 25px 0;
    overflow-x: auto;
    border-left: 4px solid var(--accent);
    font-family: 'Courier New', monospace;
    font-size: 15px;
    line-height: 1.5;
  }

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

  .image-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 25px;
    margin: 40px 0;
  }

  .image-card {
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    position: relative;
  }

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

  .image-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
    display: block;
  }

  .image-card:hover img {
    transform: scale(1.05);
  }

  .section-divider {
    position: relative;
    margin: 60px 0;
    text-align: center;
  }

  .section-divider::before,
  .section-divider::after {
    content: '';
    position: absolute;
    top: 50%;
    width: 35%;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--accent), transparent);
    transform: translateY(-50%);
    animation: dash 2s infinite;
  }

  .section-divider::before {
    left: 0;
  }

  .section-divider::after {
    right: 0;
    animation-delay: 1s;
  }

  @keyframes dash {
    0% {
      width: 0;
      opacity: 0;
    }
    50% {
      width: 35%;
      opacity: 1;
    }
    100% {
      width: 0;
      opacity: 0;
    }
  }

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

  .card {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 30px;
    backdrop-filter: blur(10px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
    transition: transform 0.3s ease, box-shadow 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, 0.25);
  }

  .btn-cta {
    display: inline-block;
    background: linear-gradient(45deg, var(--accent), #ff8c00);
    border: none;
    padding: 15px 35px;
    color: var(--text);
    font-size: 16px;
    font-weight: 600;
    border-radius: 30px;
    box-shadow: 0 5px 15px rgba(255, 165, 0, 0.4);
    transition: all 0.3s ease;
    text-decoration: none;
    margin: 20px 0;
    cursor: pointer;
  }

  .btn-cta:hover {
    box-shadow: 0 8px 25px rgba(255, 165, 0, 0.6);
    transform: translateY(-3px);
  }

  .footer {
    background: rgba(13, 27, 42, 0.9);
    padding: 40px 0;
    text-align: center;
    margin-top: 80px;
    backdrop-filter: blur(5px);
  }

  .footer-links {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-bottom: 20px;
    flex-wrap: wrap;
  }

  .footer-link {
    color: var(--text);
    text-decoration: none;
    transition: color 0.3s ease;
  }

  .footer-link:hover {
    color: var(--accent);
  }

  .copyright {
    opacity: 0.7;
    font-size: 14px;
  }

  @keyframes fadeIn {
    from {
      opacity: 0;
      transform: translateY(20px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }

  .fade-in {
    animation: fadeIn 1s ease-out forwards;
  }

  @media (max-width: 768px) {
    .navbar {
      padding: 15px 20px;
    }
    
    .navbar-menu {
      gap: 15px;
    }
    
    .hero-title {
      font-size: 36px;
    }
    
    .hero-subtitle {
      font-size: 18px;
    }
    
    .article-container {
      padding: 30px;
    }
  }

  @media (max-width: 480px) {
    .navbar {
      flex-direction: column;
      padding: 15px;
    }
    
    .navbar-menu {
      margin-top: 15px;
      flex-wrap: wrap;
      justify-content: center;
    }
    
    .hero-title {
      font-size: 28px;
    }
    
    .article-container {
      padding: 20px;
    }
    
    article h2 {
      font-size: 24px;
    }
  }