:root {
    --primary: #0f0c29;
    --secondary: #302b63;
    --accent: #00ffcc;
    --highlight: #ff00ff;
    --text: #ffffff;
    --card-bg: rgba(255, 255, 255, 0.1);
    --nav-bg: rgba(0, 0, 0, 0.9);
    --grid-line: rgba(255, 255, 255, 0.1);
  }

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

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

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

  .header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 20px 0;
    background: var(--nav-bg);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
    z-index: 1000;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.3s ease;
  }

  .header.scrolled {
    padding: 10px 0;
    backdrop-filter: blur(10px);
  }

  .logo {
    font-size: 24px;
    font-weight: bold;
    background: linear-gradient(90deg, var(--accent), var(--highlight));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    text-shadow: 0 0 10px rgba(0, 255, 204, 0.5);
  }

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

  .nav-link {
    color: var(--text);
    text-decoration: none;
    font-weight: 600;
    position: relative;
    transition: all 0.3s ease;
  }

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

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

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

  .hero {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
    overflow: hidden;
    padding-top: 80px;
  }

  .hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 50% 50%, rgba(0, 255, 204, 0.1), transparent 70%);
    z-index: -1;
  }

  .hero-content {
    max-width: 800px;
    padding: 40px;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.3);
  }

  .hero-title {
    font-size: 48px;
    margin-bottom: 20px;
    background: linear-gradient(90deg, var(--accent), var(--highlight));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    text-shadow: 0 0 20px rgba(0, 255, 204, 0.5);
  }

  .hero-subtitle {
    font-size: 20px;
    margin-bottom: 30px;
    opacity: 0.9;
  }

  .grid-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    padding: 80px 0;
  }

  .card {
    background: var(--card-bg);
    border-radius: 15px;
    padding: 30px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.05);
  }

  .card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, transparent, rgba(0, 255, 204, 0.05), transparent);
    z-index: -1;
  }

  .card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.4);
  }

  .card-title {
    font-size: 22px;
    margin-bottom: 15px;
    color: var(--accent);
  }

  .card-desc {
    margin-bottom: 20px;
    opacity: 0.8;
  }

  .card-features {
    list-style: none;
  }

  .card-feature {
    position: relative;
    padding-left: 20px;
    margin-bottom: 8px;
  }

  .card-feature::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--highlight);
  }

  .card-img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 10px;
    margin-bottom: 20px;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.3);
    transition: all 0.3s ease;
  }

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

  .article-container {
    max-width: 800px;
    margin: 0 auto;
    padding: 80px 20px;
  }

  article {
    background: rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(10px);
    padding: 40px;
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.3);
  }

  article h2 {
    font-size: 32px;
    margin-bottom: 30px;
    color: var(--accent);
    text-shadow: 0 0 10px rgba(0, 255, 204, 0.5);
  }

  article h3 {
    font-size: 24px;
    margin: 40px 0 20px;
    color: var(--accent);
  }

  article p {
    margin-bottom: 20px;
    line-height: 1.8;
  }

  article color {
    color: var(--accent);
    font-weight: bold;
  }

  pre {
    background: rgba(0, 0, 0, 0.5);
    border-radius: 10px;
    padding: 20px;
    margin: 20px 0;
    overflow-x: auto;
    border-left: 3px solid var(--accent);
  }

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

  .footer {
    text-align: center;
    padding: 40px 0;
    background: rgba(0, 0, 0, 0.5);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
  }

  .footer-text {
    opacity: 0.7;
    font-size: 14px;
  }

  .grid-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    background: repeating-linear-gradient(
      0deg,
      transparent,
      transparent 29px,
      var(--grid-line) 30px
    ),
    repeating-linear-gradient(
      90deg,
      transparent,
      transparent 29px,
      var(--grid-line) 30px
    );
    z-index: -1;
    opacity: 0.1;
  }

  @media (max-width: 768px) {
    .hero-title {
      font-size: 36px;
    }
    
    .hero-subtitle {
      font-size: 18px;
    }
    
    .nav-links {
      gap: 15px;
    }
    
    .grid-container {
      grid-template-columns: 1fr;
    }
  }