:root {
    --primary-gradient: linear-gradient(135deg, #6A5ACD, #FF69B4);
    --secondary-gradient: linear-gradient(to right, #FF7F50, #FF69B4);
    --dark-bg: rgba(42, 42, 42, 0.8);
    --light-bg: rgba(255, 255, 255, 0.1);
    --accent-color: #6A5ACD;
    --text-color: #333;
    --light-text: #fff;
    --shadow: 0 4px 20px rgba(0,0,0,0.15);
    --border-radius: 12px;
  }

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

  body {
    font-family: 'Roboto', sans-serif;
    color: var(--text-color);
    background: #f9f9f9;
    line-height: 1.6;
    overflow-x: hidden;
  }

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

  .header {
    background: var(--primary-gradient);
    color: var(--light-text);
    padding: 2rem 0;
    text-align: center;
    position: relative;
    overflow: hidden;
    margin-bottom: 3rem;
  }

  .header::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('https://images.gptkong.com/demo/sample3.png') center/cover no-repeat;
    opacity: 0.1;
    z-index: 0;
  }

  .header-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
    margin: 0 auto;
  }

  h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    text-shadow: 0 2px 4px rgba(0,0,0,0.3);
  }

  .subtitle {
    font-size: 1.2rem;
    opacity: 0.9;
    margin-bottom: 1.5rem;
  }

  .notice {
    background: rgba(255,255,255,0.2);
    padding: 1rem;
    border-radius: var(--border-radius);
    margin: 2rem 0;
    font-size: 0.9rem;
  }

  .main-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
    padding: 2rem 0;
  }

  article {
    background: white;
    border-radius: var(--border-radius);
    padding: 2.5rem;
    box-shadow: var(--shadow);
    position: relative;
    overflow: hidden;
  }

  article::after {
    content: "";
    position: absolute;
    top: 0;
    right: 0;
    width: 150px;
    height: 150px;
    background: url('https://images.gptkong.com/demo/sample6.png') center/cover no-repeat;
    opacity: 0.1;
    z-index: 0;
  }

  h2 {
    color: var(--accent-color);
    font-size: 1.8rem;
    margin: 2rem 0 1.5rem;
    position: relative;
    padding-bottom: 0.5rem;
  }

  h2::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 3px;
    background: var(--secondary-gradient);
  }

  h3 {
    font-size: 1.4rem;
    margin: 1.8rem 0 1rem;
    color: #555;
  }

  p {
    margin-bottom: 1.2rem;
    font-size: 1.05rem;
    line-height: 1.7;
  }

  pre {
    background: #2d2d2d;
    color: #f8f8f2;
    padding: 1.5rem;
    border-radius: var(--border-radius);
    overflow-x: auto;
    margin: 1.5rem 0;
    position: relative;
    box-shadow: var(--shadow);
  }

  code {
    font-family: 'Courier New', monospace;
    font-size: 0.95rem;
  }

  .image-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
  }

  .gallery-item {
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease;
    height: 320px;
  }

  .gallery-item:hover {
    transform: translateY(-5px);
  }

  .gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
  }

  .gallery-item:hover img {
    transform: scale(1.05);
  }

  .data-card {
    background: white;
    border-radius: var(--border-radius);
    padding: 1.5rem;
    margin: 1.5rem 0;
    box-shadow: var(--shadow);
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
  }

  .data-item {
    flex: 1 1 200px;
    padding: 1rem;
    background: rgba(106, 90, 205, 0.05);
    border-radius: 8px;
    border-left: 3px solid var(--accent-color);
  }

  .data-item h4 {
    color: var(--accent-color);
    margin-bottom: 0.5rem;
  }

  .footer {
    background: var(--dark-bg);
    color: var(--light-text);
    padding: 2rem 0;
    text-align: center;
    margin-top: 3rem;
  }

  .nav-links {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-top: 1rem;
  }

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

  .nav-links a:hover {
    color: #FF69B4;
  }

  @media (max-width: 768px) {
    .header {
      padding: 1.5rem 0;
    }
    
    h1 {
      font-size: 2rem;
    }
    
    article {
      padding: 1.5rem;
    }
    
    .image-gallery {
      grid-template-columns: 1fr;
    }
  }

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

  .animate {
    animation: fadeIn 0.8s ease forwards;
  }

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