:root {
    --primary-dark: #0f2027;
    --primary-mid: #203a43;
    --primary-light: #2c5364;
    --accent-blue: #00c6ff;
    --accent-purple: #7b2cbf;
    --accent-green: #00ff88;
    --text-light: #ffffff;
    --text-muted: #d1d5db;
    --card-bg: #1e293b;
  }

  @font-face {
    font-family: 'Roboto';
    src: url('https://fonts.googleapis.com/css2?family=Roboto:wght@300;400;500;700&display=swap');
  }

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

  body {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary-mid), var(--primary-light));
    color: var(--text-light);
    font-family: 'Roboto', sans-serif;
    line-height: 1.6;
    min-height: 100%;
    padding: 0;
    margin: 0;
  }

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

  .header {
    text-align: center;
    margin-bottom: 3rem;
    position: relative;
    padding: 2rem 0;
  }

  .header::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 25%;
    width: 50%;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--accent-blue), transparent);
  }

  .notice {
    background: rgba(0, 198, 255, 0.1);
    border: 1px solid var(--accent-blue);
    border-radius: 8px;
    padding: 1rem;
    margin-bottom: 2rem;
    text-align: center;
    font-size: 0.9rem;
    color: var(--accent-blue);
  }

  article {
    background: rgba(30, 41, 59, 0.7);
    border-radius: 16px;
    padding: 3rem;
    backdrop-filter: blur(10px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    margin-bottom: 3rem;
  }

  h1, h2, h3, h4 {
    font-family: 'Helvetica', sans-serif;
    color: var(--text-light);
    margin-bottom: 1.5rem;
    font-weight: 500;
  }

  h2 {
    font-size: 2rem;
    background: linear-gradient(90deg, var(--accent-blue), var(--accent-purple));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid rgba(0, 198, 255, 0.3);
    margin-top: 2.5rem;
  }

  h3 {
    font-size: 1.5rem;
    color: var(--accent-blue);
    margin-top: 2rem;
  }

  p {
    margin-bottom: 1.5rem;
    color: var(--text-muted);
    font-size: 1.1rem;
    line-height: 1.8;
  }

  pre {
    background: var(--card-bg);
    border-radius: 8px;
    padding: 1.5rem;
    margin: 1.5rem 0;
    overflow-x: auto;
    box-shadow: inset 0 0 10px rgba(0, 0, 0, 0.5);
    border-left: 4px solid var(--accent-blue);
  }

  code {
    font-family: 'Courier New', monospace;
    color: var(--accent-green);
    font-size: 0.9rem;
  }

  table {
    width: 100%;
    border-collapse: collapse;
    margin: 2rem 0;
    background: var(--card-bg);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
  }

  th, td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid rgba(0, 198, 255, 0.1);
  }

  th {
    background: rgba(0, 198, 255, 0.1);
    color: var(--accent-blue);
    font-weight: 500;
  }

  tr:hover {
    background: rgba(0, 198, 255, 0.05);
  }

  .gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
    margin: 3rem 0;
  }

  .gallery-item {
    position: relative;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
    transition: transform 0.3s, box-shadow 0.3s;
  }

  .gallery-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 25px rgba(0, 198, 255, 0.2);
  }

  .gallery-item img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform 0.5s;
  }

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

  .gallery-item::after {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, transparent 60%, rgba(0, 0, 0, 0.7));
  }

  .nav-links {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
  }

  .nav-link {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 1.1rem;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    transition: all 0.3s;
    position: relative;
  }

  .nav-link:hover {
    color: var(--accent-blue);
  }

  .nav-link::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--accent-blue);
    transition: width 0.3s;
  }

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

  @media (max-width: 768px) {
    .container {
      padding: 1rem;
    }
    
    article {
      padding: 1.5rem;
    }
    
    h2 {
      font-size: 1.5rem;
    }
    
    h3 {
      font-size: 1.3rem;
    }
    
    .gallery {
      grid-template-columns: 1fr;
    }
    
    .nav-links {
      flex-direction: column;
      gap: 1rem;
      align-items: center;
    }
  }

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

  .floating {
    animation: float 4s ease-in-out infinite;
  }