:root {
    --primary: #0D1B2A;
    --secondary: #1B263B;
    --accent: #00FFFF;
    --accent2: #FF00FF;
    --text: #E0E1DD;
    --card-bg: rgba(27, 38, 59, 0.8);
  }

  * {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Montserrat', sans-serif;
  }

  body {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: var(--text);
    line-height: 1.6;
    min-height: 100%;
    padding: 0;
    margin: 0;
    overflow-x: hidden;
  }

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

  .header {
    text-align: center;
    padding: 40px 0;
    position: relative;
    overflow: hidden;
  }

  .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: -1;
  }

  .header h1 {
    font-size: 2.5rem;
    margin-bottom: 20px;
    background: linear-gradient(90deg, var(--accent), var(--accent2));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    text-shadow: 0 0 10px rgba(0, 255, 255, 0.3);
  }

  .header p {
    max-width: 800px;
    margin: 0 auto;
    font-size: 1.1rem;
    opacity: 0.9;
  }

  .notice {
    background: var(--card-bg);
    border-left: 4px solid var(--accent);
    padding: 15px;
    margin: 30px 0;
    border-radius: 0 5px 5px 0;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
  }

  .notice p {
    font-size: 0.9rem;
    color: var(--accent);
  }

  article {
    background: var(--card-bg);
    border-radius: 10px;
    padding: 40px;
    margin: 40px 0;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    position: relative;
    overflow: hidden;
  }

  article::after {
    content: "";
    position: absolute;
    top: 0;
    right: 0;
    width: 200px;
    height: 200px;
    background: url('https://images.gptkong.com/demo/sample2.png') center/cover no-repeat;
    opacity: 0.05;
    z-index: 0;
  }

  article h2 {
    font-size: 1.8rem;
    margin-bottom: 25px;
    color: var(--accent);
    position: relative;
    z-index: 1;
  }

  article h3 {
    font-size: 1.4rem;
    margin: 30px 0 15px;
    color: var(--text);
    position: relative;
    z-index: 1;
  }

  article p {
    margin-bottom: 20px;
    font-size: 1.05rem;
    position: relative;
    z-index: 1;
  }

  pre {
    background: rgba(13, 27, 42, 0.7);
    border-radius: 8px;
    padding: 20px;
    margin: 25px 0;
    overflow: auto;
    border-left: 3px solid var(--accent);
    box-shadow: inset 0 0 10px rgba(0, 0, 0, 0.5);
    position: relative;
  }

  pre::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: 0.05;
    z-index: 0;
  }

  code {
    font-family: 'Fira Code', monospace;
    font-size: 0.9rem;
    color: var(--accent);
    position: relative;
    z-index: 1;
  }

  .gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
    margin: 40px 0;
  }

  .gallery-item {
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
    transition: transform 0.3s, box-shadow 0.3s;
    height: 300px;
  }

  .gallery-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 255, 255, 0.3);
  }

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

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

  .nav-links {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 15px;
    margin: 30px 0;
  }

  .nav-link {
    padding: 10px 20px;
    background: rgba(27, 38, 59, 0.7);
    border-radius: 5px;
    color: var(--text);
    text-decoration: none;
    transition: all 0.3s;
    border: 1px solid rgba(0, 255, 255, 0.3);
  }

  .nav-link:hover {
    background: rgba(0, 255, 255, 0.1);
    color: var(--accent);
    box-shadow: 0 0 10px rgba(0, 255, 255, 0.3);
  }

  .footer {
    text-align: center;
    padding: 30px 0;
    margin-top: 50px;
    border-top: 1px solid rgba(65, 90, 119, 0.5);
  }

  @media (max-width: 768px) {
    .header h1 {
      font-size: 2rem;
    }
    
    article {
      padding: 25px;
    }
    
    .gallery {
      grid-template-columns: 1fr;
    }
  }

  /* Animations */
  @keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
  }

  .floating {
    animation: float 6s ease-in-out infinite;
  }

  @keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(0, 255, 255, 0.4); }
    70% { box-shadow: 0 0 0 10px rgba(0, 255, 255, 0); }
    100% { box-shadow: 0 0 0 0 rgba(0, 255, 255, 0); }
  }

  .pulse {
    animation: pulse 2s infinite;
  }