:root {
    --primary-dark: #1A1A2E;
    --primary-black: #000000;
    --accent-neon: #39FF14;
    --accent-blue: #03A9F4;
    --text-light: #FFFFFF;
    --card-bg: rgba(26, 26, 46, 0.8);
    --chart-bg: rgba(0, 0, 0, 0.7);
  }

  @import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@400;700&family=Montserrat:wght@300;500;700&family=Roboto:wght@300;400;500&display=swap');

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

  body {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary-black));
    color: var(--text-light);
    font-family: 'Roboto', sans-serif;
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100%;
    padding: 20px;
  }

  .design-notice {
    position: fixed;
    top: 20px;
    right: 20px;
    background: var(--accent-neon);
    color: var(--primary-dark);
    padding: 10px 15px;
    border-radius: 30px;
    font-family: 'Orbitron', sans-serif;
    font-size: 14px;
    z-index: 1000;
    box-shadow: 0 4px 15px rgba(57, 255, 20, 0.4);
    animation: pulse 2s infinite;
  }

  @keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
  }

  .container {
    max-width: 1200px;
    margin: 80px auto 40px;
    padding: 0 20px;
  }

  header {
    text-align: center;
    margin-bottom: 60px;
    position: relative;
  }

  h1, h2, h3 {
    font-family: 'Orbitron', sans-serif;
    color: var(--accent-neon);
    margin-bottom: 20px;
    text-shadow: 0 0 10px rgba(57, 255, 20, 0.3);
  }

  h1 {
    font-size: 2.8rem;
    background: linear-gradient(90deg, var(--accent-neon), var(--accent-blue));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    margin-bottom: 30px;
  }

  h2 {
    font-size: 2.2rem;
    border-bottom: 2px solid var(--accent-blue);
    padding-bottom: 10px;
    margin-top: 50px;
  }

  h3 {
    font-size: 1.8rem;
    color: var(--accent-blue);
    margin-top: 40px;
  }

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

  .nav-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(26, 26, 46, 0.95);
    backdrop-filter: blur(10px);
    z-index: 100;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
  }

  nav {
    max-width: 1200px;
    margin: 0 auto;
    padding: 15px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
  }

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

  .nav-links a {
    color: var(--text-light);
    text-decoration: none;
    font-family: 'Montserrat', sans-serif;
    font-weight: 500;
    font-size: 1.1rem;
    position: relative;
    transition: all 0.3s ease;
  }

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

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

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

  .hero {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 80px;
    gap: 40px;
  }

  .hero-text {
    flex: 1;
  }

  .hero-image {
    flex: 1;
    display: flex;
    justify-content: center;
  }

  .hero-image img {
    width: 100%;
    max-width: 400px;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(3, 169, 244, 0.3);
    transition: transform 0.5s ease;
  }

  .hero-image img:hover {
    transform: scale(1.03) rotate(2deg);
  }

  article {
    background: rgba(26, 26, 46, 0.5);
    border-radius: 20px;
    padding: 40px;
    margin-bottom: 60px;
    border: 1px solid var(--accent-blue);
    box-shadow: 0 10px 30px rgba(3, 169, 244, 0.1);
    position: relative;
    overflow: hidden;
  }

  article::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 20% 30%, rgba(57, 255, 20, 0.05) 0%, transparent 50%);
    pointer-events: none;
  }

  pre {
    background: var(--chart-bg);
    border-radius: 10px;
    padding: 20px;
    margin: 30px 0;
    overflow: auto;
    border-left: 4px solid var(--accent-neon);
    font-family: 'Roboto Mono', monospace;
    font-size: 0.9rem;
    line-height: 1.5;
    position: relative;
  }

  pre::before {
    content: 'CSS';
    position: absolute;
    top: 0;
    left: 0;
    background: var(--accent-neon);
    color: var(--primary-dark);
    padding: 2px 10px;
    font-family: 'Orbitron', sans-serif;
    font-size: 0.8rem;
    border-bottom-right-radius: 5px;
  }

  code {
    font-family: 'Roboto Mono', monospace;
    color: var(--accent-blue);
  }

  .image-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 30px;
    margin: 40px 0;
  }

  .image-card {
    position: relative;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
    transition: all 0.4s ease;
  }

  .image-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 35px rgba(57, 255, 20, 0.3);
  }

  .image-card img {
    width: 100%;
    height: 300px;
    object-fit: cover;
    display: block;
  }

  .image-card::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to top, rgba(26, 26, 46, 0.8), transparent);
  }

  .card {
    background: var(--card-bg);
    border-radius: 15px;
    padding: 30px;
    margin-bottom: 40px;
    border: 1px solid var(--accent-blue);
    transition: all 0.3s ease;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
  }

  .card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(57, 255, 20, 0.3);
    border-color: var(--accent-neon);
  }

  .summary {
    background: linear-gradient(135deg, rgba(26, 26, 46, 0.8), rgba(3, 169, 244, 0.1));
    padding: 40px;
    border-radius: 20px;
    margin-top: 60px;
    position: relative;
    overflow: hidden;
  }

  .summary::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(57, 255, 20, 0.05) 0%, transparent 70%);
    animation: rotate 20s linear infinite;
    pointer-events: none;
  }

  @keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
  }

  footer {
    text-align: center;
    padding: 30px 0;
    margin-top: 80px;
    border-top: 1px solid rgba(3, 169, 244, 0.3);
  }

  .back-to-top {
    display: inline-block;
    background: var(--accent-blue);
    color: var(--text-light);
    padding: 10px 20px;
    border-radius: 30px;
    text-decoration: none;
    font-family: 'Montserrat', sans-serif;
    font-weight: 500;
    transition: all 0.3s ease;
    margin-top: 20px;
  }

  .back-to-top:hover {
    background: var(--accent-neon);
    color: var(--primary-dark);
    transform: translateY(-3px);
  }

  @media (max-width: 1024px) {
    .hero {
      flex-direction: column;
    }
    
    .hero-text, .hero-image {
      flex: none;
      width: 100%;
    }
    
    h1 {
      font-size: 2.4rem;
    }
    
    h2 {
      font-size: 2rem;
    }
  }

  @media (max-width: 768px) {
    .nav-links {
      gap: 15px;
    }
    
    .image-grid {
      grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    }
    
    article, .card, .summary {
      padding: 25px;
    }
    
    h1 {
      font-size: 2rem;
    }
    
    h2 {
      font-size: 1.8rem;
    }
    
    h3 {
      font-size: 1.5rem;
    }
  }

  @media (max-width: 480px) {
    .nav-container {
      padding: 10px;
    }
    
    .nav-links {
      display: none;
    }
    
    .image-grid {
      grid-template-columns: 1fr;
    }
    
    pre {
      font-size: 0.8rem;
      padding: 15px;
    }
    
    .design-notice {
      font-size: 12px;
      padding: 8px 12px;
    }
  }