:root {
    --primary: #0d1b2a;
    --secondary: #1b263b;
    --accent: #00ffea;
    --text: #ffffff;
    --card-bg: rgba(255, 255, 255, 0.1);
    --border: rgba(255, 255, 255, 0.2);
    --neon-purple: #a855f7;
    --neon-green: #00ff9d;
  }

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

  html {
    scroll-behavior: smooth;
  }

  body {
    font-family: 'Roboto', sans-serif;
    color: var(--text);
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    background-size: 400% 400%;
    animation: gradientAnimation 15s ease infinite;
    line-height: 1.6;
    overflow-x: hidden;
  }

  @keyframes gradientAnimation {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
  }

  .header {
    position: relative;
    padding: 2rem 0;
    text-align: center;
    z-index: 10;
  }

  .header h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    background: linear-gradient(90deg, var(--accent), var(--neon-purple));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    text-shadow: 0 0 10px rgba(0, 255, 234, 0.3);
  }

  .notice {
    background: rgba(0, 0, 0, 0.3);
    padding: 1rem;
    border-radius: 8px;
    margin: 2rem auto;
    max-width: 800px;
    border: 1px solid var(--accent);
    text-align: center;
    backdrop-filter: blur(5px);
  }

  .nav {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin: 2rem 0;
    flex-wrap: wrap;
  }

  .nav a {
    color: var(--text);
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    transition: all 0.3s ease;
    position: relative;
  }

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

  .nav a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: width 0.3s ease;
  }

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

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

  article {
    background: rgba(0, 0, 0, 0.2);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 3rem;
    margin: 3rem 0;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border);
  }

  article h2 {
    font-size: 2.5rem;
    margin-bottom: 2rem;
    color: var(--accent);
    position: relative;
    padding-bottom: 1rem;
  }

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

  article h3 {
    font-size: 1.8rem;
    margin: 2rem 0 1rem;
    color: var(--neon-purple);
  }

  article p {
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
  }

  article ol {
    margin-left: 2rem;
    margin-bottom: 2rem;
  }

  article li {
    margin-bottom: 0.5rem;
  }

  pre {
    background: rgba(0, 0, 0, 0.5);
    border-radius: 8px;
    padding: 1.5rem;
    margin: 2rem 0;
    overflow: auto;
    border-left: 3px solid var(--accent);
  }

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

  .image-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
    margin: 3rem 0;
  }

  .image-card {
    background: var(--card-bg);
    border-radius: 12px;
    overflow: hidden;
    transition: all 0.3s ease;
    border: 1px solid var(--border);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
  }

  .image-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.3);
  }

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

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

  .image-card .caption {
    padding: 1rem;
    text-align: center;
    background: rgba(0, 0, 0, 0.3);
  }

  .geometric-shape {
    position: absolute;
    width: 300px;
    height: 300px;
    background: rgba(168, 85, 247, 0.1);
    border-radius: 50%;
    top: 50%;
    left: 20%;
    filter: blur(60px);
    z-index: -1;
    animation: float 15s ease infinite alternate;
  }

  .geometric-shape:nth-child(2) {
    width: 200px;
    height: 200px;
    background: rgba(0, 255, 234, 0.1);
    top: 30%;
    left: 80%;
    animation-delay: 2s;
  }

  .geometric-shape:nth-child(3) {
    width: 400px;
    height: 400px;
    background: rgba(0, 255, 157, 0.1);
    top: 80%;
    left: 50%;
    animation-delay: 4s;
  }

  @keyframes float {
    0% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-50px) rotate(10deg); }
    100% { transform: translateY(0) rotate(0deg); }
  }

  .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: var(--accent);
    border-radius: 50%;
    opacity: 0.5;
    animation: particleAnimation 5s linear infinite;
  }

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

  @media (max-width: 768px) {
    .header h1 {
      font-size: 2rem;
    }
    
    article {
      padding: 2rem 1rem;
    }
    
    article h2 {
      font-size: 1.8rem;
    }
    
    article h3 {
      font-size: 1.5rem;
    }
    
    .image-grid {
      grid-template-columns: 1fr;
    }
  }