:root {
    --primary: #1E1E1E;
    --secondary: #2C2C2C;
    --accent1: #00FFFF;
    --accent2: #9B30FF;
    --accent3: #32CD32;
    --text: #FFFFFF;
    --text-secondary: #CCCCCC;
  }

  @import url('https://fonts.googleapis.com/css2?family=Roboto:wght@700&family=Montserrat:wght@400;500&display=swap');

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

  body {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    font-family: 'Montserrat', sans-serif;
    color: var(--text);
    line-height: 1.6;
    padding: 0;
    margin: 0;
    overflow-x: hidden;
  }

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

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

  .header-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, var(--accent1), transparent 70%);
    opacity: 0.1;
    z-index: -1;
  }

  h1, h2, h3, h4 {
    font-family: 'Roboto', sans-serif;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--text);
  }

  h1 {
    font-size: 2.5rem;
    background: linear-gradient(90deg, var(--accent1), var(--accent2));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 30px;
  }

  h2 {
    font-size: 1.8rem;
    color: var(--accent1);
    position: relative;
    padding-bottom: 10px;
    margin-top: 40px;
  }

  h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100px;
    height: 3px;
    background: linear-gradient(90deg, var(--accent1), var(--accent2));
  }

  h3 {
    font-size: 1.5rem;
    color: var(--accent3);
    margin-top: 30px;
  }

  p {
    margin-bottom: 20px;
    font-size: 1.1rem;
    color: var(--text-secondary);
  }

  .note {
    background: rgba(0, 255, 255, 0.1);
    border-left: 4px solid var(--accent1);
    padding: 20px;
    margin: 30px 0;
    border-radius: 0 8px 8px 0;
  }

  pre {
    background: rgba(30, 30, 30, 0.8);
    border: 1px solid var(--accent1);
    border-radius: 8px;
    padding: 20px;
    margin: 30px 0;
    overflow: auto;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    position: relative;
  }

  pre::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, transparent, rgba(0, 255, 255, 0.05));
    pointer-events: none;
    border-radius: 8px;
  }

  code {
    font-family: 'Courier New', monospace;
    color: var(--accent3);
    background: transparent;
    padding: 2px 4px;
    border-radius: 4px;
  }

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

  .image-card {
    background: var(--secondary);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    position: relative;
  }

  .image-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0, 255, 255, 0.2);
  }

  .image-card img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform 0.5s ease;
  }

  .image-card:hover img {
    transform: scale(1.05);
  }

  .image-caption {
    padding: 15px;
    background: linear-gradient(to top, rgba(30, 30, 30, 0.9), transparent);
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
  }

  .section {
    margin-bottom: 60px;
    position: relative;
  }

  .section::before {
    content: '';
    position: absolute;
    top: -30px;
    left: 0;
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--accent1), transparent);
  }

  .highlight-box {
    background: linear-gradient(135deg, rgba(0, 255, 255, 0.1), rgba(155, 48, 255, 0.1));
    border-radius: 12px;
    padding: 30px;
    margin: 40px 0;
    border: 1px solid rgba(0, 255, 255, 0.2);
    position: relative;
    overflow: hidden;
  }

  .highlight-box::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="100" height="100" viewBox="0 0 100 100" fill="none" stroke="%2300FFFF" stroke-width="0.5" opacity="0.1"><path d="M0,0 L100,100 M100,0 L0,100"/></svg>');
    pointer-events: none;
  }

  .nav-tabs {
    display: flex;
    margin-bottom: 30px;
    border-bottom: 1px solid rgba(0, 255, 255, 0.3);
  }

  .tab {
    padding: 10px 20px;
    cursor: pointer;
    position: relative;
    color: var(--text-secondary);
    transition: color 0.3s ease;
  }

  .tab.active {
    color: var(--accent1);
  }

  .tab.active::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--accent1);
  }

  .tab-content {
    display: none;
  }

  .tab-content.active {
    display: block;
    animation: fadeIn 0.5s ease;
  }

  @keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
  }

  .particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: -1;
  }

  .particle {
    position: absolute;
    width: 2px;
    height: 2px;
    background-color: var(--accent1);
    border-radius: 50%;
    animation: float 15s linear infinite;
    opacity: 0.5;
  }

  @keyframes float {
    0% {
      transform: translateY(0) translateX(0);
      opacity: 0;
    }
    10% {
      opacity: 0.5;
    }
    90% {
      opacity: 0.5;
    }
    100% {
      transform: translateY(-100vh) translateX(100px);
      opacity: 0;
    }
  }

  .reference-note {
    background: rgba(50, 205, 50, 0.1);
    border-left: 4px solid var(--accent3);
    padding: 15px;
    margin: 20px 0;
    border-radius: 0 8px 8px 0;
    font-size: 0.9rem;
  }

  @media (max-width: 768px) {
    .container {
      padding: 15px;
    }
    
    h1 {
      font-size: 2rem;
    }
    
    h2 {
      font-size: 1.5rem;
    }
    
    .image-grid {
      grid-template-columns: 1fr;
    }
  }