:root {
    --primary: #0F2045;
    --secondary: #8B9A5B;
    --accent: #D4AF37;
    --highlight: #FFA500;
    --neutral: #964B00;
    --text: #f8f8f8;
    --bg: #121212;
  }

  @font-face {
    font-family: 'Caslon';
    src: local('Caslon'), local('Caslon-Regular');
    font-display: swap;
  }

  @font-face {
    font-family: 'Bodoni';
    src: local('Bodoni'), local('Bodoni-Regular');
    font-display: swap;
  }

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

  body {
    font-family: 'Bodoni', 'Caslon', serif;
    color: var(--text);
    background: var(--bg);
    line-height: 1.6;
    overflow-x: hidden;
  }

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

  header {
    background: linear-gradient(135deg, var(--neutral), var(--primary));
    padding: 2rem 0;
    text-align: center;
    position: relative;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
  }

  header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('https://images.gptkong.com/demo/sample1.png') center/cover no-repeat;
    opacity: 0.1;
    z-index: 0;
  }

  h1 {
    font-size: 3rem;
    color: var(--accent);
    text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
    margin-bottom: 1rem;
    position: relative;
    z-index: 1;
  }

  .subtitle {
    font-size: 1.5rem;
    color: var(--highlight);
    margin-bottom: 2rem;
    position: relative;
    z-index: 1;
  }

  .notice {
    background: rgba(255,255,255,0.1);
    padding: 1rem;
    border-radius: 8px;
    border-left: 4px solid var(--highlight);
    margin: 2rem 0;
    font-size: 0.9rem;
  }

  nav {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin: 2rem 0;
    flex-wrap: wrap;
  }

  nav a {
    color: var(--text);
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    transition: all 0.3s ease;
    position: relative;
    font-weight: bold;
  }

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

  nav a:hover {
    color: var(--highlight);
  }

  nav a:hover::after {
    width: 100%;
  }

  article {
    background: rgba(15,32,69,0.8);
    padding: 2rem;
    border-radius: 8px;
    margin: 2rem 0;
    box-shadow: 0 10px 20px rgba(0,0,0,0.2);
  }

  article h2 {
    color: var(--accent);
    font-size: 2rem;
    margin-bottom: 1.5rem;
    position: relative;
    padding-bottom: 0.5rem;
  }

  article h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100px;
    height: 3px;
    background: linear-gradient(90deg, var(--highlight), var(--accent));
  }

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

  article p {
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
  }

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

  .image-card {
    position: relative;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0,0,0,0.3);
    transition: transform 0.3s ease;
  }

  .image-card:hover {
    transform: translateY(-10px);
  }

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

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

  .image-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to top, rgba(0,0,0,0.7), transparent);
  }

  pre {
    background: rgba(0,0,0,0.3);
    border-left: 4px solid var(--highlight);
    border-radius: 4px;
    padding: 1rem;
    margin: 1.5rem 0;
    overflow: auto;
    font-family: monospace;
    font-size: 0.9rem;
    line-height: 1.5;
  }

  code {
    color: var(--highlight);
    font-family: monospace;
  }

  footer {
    background: linear-gradient(135deg, var(--primary), var(--neutral));
    padding: 2rem;
    text-align: center;
    margin-top: 3rem;
  }

  .footer-links {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
  }

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

  .footer-links a:hover {
    color: var(--highlight);
  }

  .copyright {
    font-size: 0.9rem;
    opacity: 0.8;
  }

  @media (max-width: 768px) {
    h1 {
      font-size: 2rem;
    }
    
    .subtitle {
      font-size: 1.2rem;
    }
    
    nav {
      flex-direction: column;
      gap: 1rem;
    }
    
    .image-grid {
      grid-template-columns: 1fr;
    }
    
    article {
      padding: 1.5rem;
    }
  }

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

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

  .delay-1 {
    animation-delay: 0.2s;
  }

  .delay-2 {
    animation-delay: 0.4s;
  }

  .delay-3 {
    animation-delay: 0.6s;
  }

  /* Retro elements */
  .retro-border {
    border: 3px solid var(--accent);
    position: relative;
    padding: 2rem;
    margin: 2rem 0;
  }

  .retro-border::before {
    content: '';
    position: absolute;
    top: 10px;
    left: 10px;
    right: 10px;
    bottom: 10px;
    border: 1px dashed var(--highlight);
    pointer-events: none;
  }

  /* Dashboard demo */
  .dashboard-demo {
    width: 100%;
    height: 300px;
    background: rgba(0,0,0,0.2);
    border-radius: 8px;
    margin: 2rem 0;
    position: relative;
    overflow: hidden;
  }

  .dashboard-demo::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('https://images.gptkong.com/demo/sample6.png') center/cover no-repeat;
    opacity: 0.3;
  }

  .dashboard-content {
    position: relative;
    z-index: 1;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    height: 100%;
  }

  .dashboard-title {
    font-size: 1.5rem;
    color: var(--highlight);
    margin-bottom: 1rem;
  }

  .dashboard-value {
    font-size: 3rem;
    color: var(--accent);
    font-weight: bold;
  }