:root {
    --primary-70: #6b4226;
    --primary-60: #a67c52;
    --primary-50: #e0c097;
    --secondary-25: #2e2e2e;
    --accent-5: #00ff9d;
    --bg-light: #f5f5dc;
    --bg-dark: #2e2e2e;
    --text-light: #fff8e1;
    --text-dark: #2e2e2e;
    --border-radius: 8px;
    --transition: all 0.3s ease;
  }

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

  body {
    font-family: 'Georgia', serif;
    font-size: 17px;
    line-height: 1.6;
    color: var(--text-dark);
    background: linear-gradient(135deg, var(--bg-light) 0%, #f0e6d6 100%);
    padding-top: 80px;
  }

  .container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
  }

  /* Header & Navigation */
  .navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: linear-gradient(135deg, var(--primary-70), var(--primary-60));
    color: var(--text-light);
    padding: 15px 0;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    z-index: 1000;
    backdrop-filter: blur(5px);
    transition: var(--transition);
  }

  .navbar.scrolled {
    background: rgba(107, 66, 38, 0.95);
  }

  .nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
  }

  .logo {
    font-size: 24px;
    font-weight: bold;
    letter-spacing: 1px;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.3);
  }

  .nav-links {
    display: flex;
    gap: 30px;
  }

  .nav-links a {
    color: var(--text-light);
    text-decoration: none;
    font-weight: 500;
    position: relative;
    padding: 5px 0;
    transition: var(--transition);
  }

  .nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-5);
    transition: var(--transition);
  }

  .nav-links a:hover::after {
    width: 100%;
  }

  /* Hero Section */
  .hero {
    height: 500px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: url('https://images.gptkong.com/demo/sample1.png') center/cover no-repeat;
    position: relative;
    margin-bottom: 60px;
    border-radius: var(--border-radius);
    overflow: hidden;
  }

  .hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(107, 66, 38, 0.7) 0%, rgba(166, 124, 82, 0.5) 100%);
  }

  .hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    color: var(--text-light);
    padding: 0 20px;
    max-width: 800px;
  }

  .hero h1 {
    font-size: 48px;
    margin-bottom: 20px;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
  }

  .hero p {
    font-size: 20px;
    margin-bottom: 30px;
  }

  /* Content Sections */
  section {
    margin-bottom: 80px;
    background: var(--text-light);
    padding: 40px;
    border-radius: var(--border-radius);
    box-shadow: 0 8px 24px rgba(0,0,0,0.05);
    position: relative;
    overflow: hidden;
  }

  section::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 5px;
    background: linear-gradient(90deg, var(--primary-70), var(--primary-60), var(--accent-5));
  }

  h2, h3, h4 {
    color: var(--primary-70);
    margin-bottom: 20px;
    position: relative;
  }

  h2 {
    font-size: 32px;
    padding-bottom: 10px;
  }

  h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100px;
    height: 3px;
    background: var(--primary-60);
  }

  h3 {
    font-size: 26px;
    margin-top: 40px;
  }

  h4 {
    font-size: 22px;
  }

  p {
    margin-bottom: 20px;
  }

  /* Cards & Grid */
  .card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 30px;
    margin: 40px 0;
  }

  .card {
    background: white;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    transition: var(--transition);
  }

  .card:hover {
    transform: translateY(-10px);
    box-shadow: 0 12px 24px rgba(0,0,0,0.15);
  }

  .card-img {
    height: 200px;
    width: 100%;
    object-fit: cover;
  }

  .card-content {
    padding: 20px;
  }

  /* Code Blocks */
  pre {
    background: var(--bg-dark);
    color: var(--text-light);
    padding: 20px;
    border-radius: var(--border-radius);
    margin: 30px 0;
    overflow-x: auto;
    font-family: 'Courier New', monospace;
    font-size: 15px;
    line-height: 1.5;
    position: relative;
  }

  pre::before {
    content: 'CSS';
    position: absolute;
    top: 10px;
    right: 10px;
    color: var(--accent-5);
    font-weight: bold;
  }

  code {
    font-family: 'Courier New', monospace;
    background: rgba(0,0,0,0.05);
    padding: 2px 4px;
    border-radius: 4px;
  }

  /* Images */
  .content-img {
    float: right;
    width: 300px;
    height: 300px;
    margin: 0 0 20px 30px;
    border-radius: var(--border-radius);
    object-fit: cover;
    box-shadow: 0 8px 16px rgba(0,0,0,0.1);
    transition: var(--transition);
  }

  .content-img:hover {
    transform: scale(1.03);
    box-shadow: 0 12px 24px rgba(0,0,0,0.2);
  }

  /* Footer */
  footer {
    background: var(--primary-70);
    color: var(--text-light);
    padding: 40px 0;
    text-align: center;
    margin-top: 80px;
  }

  .footer-content {
    max-width: 800px;
    margin: 0 auto;
  }

  .footer-links {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin: 20px 0;
  }

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

  .footer-links a:hover {
    color: var(--accent-5);
  }

  .copyright {
    margin-top: 20px;
    font-size: 14px;
    opacity: 0.8;
  }

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

  .fade-in {
    opacity: 0;
    animation: fadeIn 0.8s ease forwards;
  }

  .delay-1 { animation-delay: 0.2s; }
  .delay-2 { animation-delay: 0.4s; }
  .delay-3 { animation-delay: 0.6s; }

  /* Responsive */
  @media (max-width: 992px) {
    .hero h1 {
      font-size: 36px;
    }
    
    .hero p {
      font-size: 18px;
    }
    
    .card-grid {
      grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    }
    
    .content-img {
      width: 250px;
      height: 250px;
    }
  }

  @media (max-width: 768px) {
    .nav-container {
      flex-direction: column;
      gap: 15px;
    }
    
    .nav-links {
      gap: 15px;
    }
    
    .hero {
      height: 400px;
    }
    
    .hero h1 {
      font-size: 28px;
    }
    
    section {
      padding: 30px;
    }
    
    .content-img {
      float: none;
      width: 100%;
      height: auto;
      margin: 0 0 20px 0;
    }
  }

  @media (max-width: 576px) {
    .hero {
      height: 300px;
    }
    
    .hero h1 {
      font-size: 24px;
    }
    
    .hero p {
      font-size: 16px;
    }
    
    h2 {
      font-size: 26px;
    }
    
    h3 {
      font-size: 22px;
    }
    
    section {
      padding: 20px;
    }
  }