:root {
    --primary: #1A237E;
    --secondary: #6200EA;
    --accent: #00E5FF;
    --text: #E0E0E0;
    --bg: #121212;
    --card-bg: rgba(30, 30, 30, 0.7);
    --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
  }

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

  body {
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    overflow-x: hidden;
  }

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

  /* Header Styles */
  header {
    background: linear-gradient(135deg, rgba(26, 35, 126, 0.9), rgba(98, 0, 234, 0.9));
    backdrop-filter: blur(10px);
    padding: 20px 0;
    position: fixed;
    width: 100%;
    z-index: 1000;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  }

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

  .logo {
    font-size: 1.8rem;
    font-weight: 700;
    color: white;
    text-decoration: none;
    background: linear-gradient(to right, var(--accent), white);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
  }

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

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

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

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

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

  /* Hero Section */
  .hero {
    height: 80vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    padding-top: 80px;
  }

  .hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('https://images.gptkong.com/demo/sample1.png') center/cover;
    filter: brightness(0.3) blur(2px);
    z-index: -1;
  }

  .hero-content {
    max-width: 800px;
  }

  .hero h1 {
    font-size: 3.5rem;
    margin-bottom: 20px;
    background: linear-gradient(to right, white, var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    line-height: 1.2;
  }

  .hero p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    opacity: 0.9;
  }

  .notice {
    background: rgba(0, 229, 255, 0.1);
    border-left: 4px solid var(--accent);
    padding: 15px;
    margin: 40px 0;
    border-radius: 0 4px 4px 0;
  }

  /* Article Styles */
  article {
    padding: 80px 0;
  }

  article h2 {
    font-size: 2.5rem;
    margin-bottom: 30px;
    color: white;
    position: relative;
    padding-bottom: 15px;
  }

  article h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100px;
    height: 3px;
    background: linear-gradient(to right, var(--primary), var(--secondary));
  }

  article h3 {
    font-size: 1.8rem;
    margin: 40px 0 20px;
    color: var(--accent);
  }

  article p {
    margin-bottom: 20px;
    font-size: 1.1rem;
  }

  .card {
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    border-radius: 10px;
    padding: 30px;
    margin: 30px 0;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: var(--transition);
  }

  .card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
  }

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

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

  table {
    width: 100%;
    border-collapse: collapse;
    margin: 30px 0;
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    border-radius: 10px;
    overflow: hidden;
  }

  th, td {
    padding: 15px;
    text-align: left;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  }

  th {
    background: linear-gradient(to right, var(--primary), var(--secondary));
    color: white;
  }

  tr:hover {
    background: rgba(255, 255, 255, 0.05);
  }

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

  .gallery-item {
    border-radius: 10px;
    overflow: hidden;
    position: relative;
    height: 300px;
    transition: var(--transition);
  }

  .gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
  }

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

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

  /* Footer */
  footer {
    background: linear-gradient(135deg, rgba(26, 35, 126, 0.9), rgba(98, 0, 234, 0.9));
    padding: 50px 0 20px;
    text-align: center;
    margin-top: 80px;
  }

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

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

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

  .copyright {
    opacity: 0.7;
    font-size: 0.9rem;
  }

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

  .floating {
    animation: float 3s ease-in-out infinite;
  }

  /* Responsive */
  @media (max-width: 768px) {
    .hero h1 {
      font-size: 2.5rem;
    }

    .nav-links {
      gap: 15px;
    }

    article h2 {
      font-size: 2rem;
    }

    .gallery {
      grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    }
  }

  @media (max-width: 480px) {
    .hero h1 {
      font-size: 2rem;
    }

    .nav-links {
      display: none;
    }

    article h2 {
      font-size: 1.8rem;
    }
  }