* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }
  
  :root {
    --primary: #00f0ff;
    --primary-dark: #0099aa;
    --secondary: #7700ff;
    --dark: #0a0a12;
    --darker: #050508;
    --light: #e0e0ff;
    --gray: #888899;
    --card-bg: rgba(20, 20, 35, 0.7);
    --border: rgba(0, 240, 255, 0.2);
  }
  
  body {
    font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    background: var(--dark);
    color: var(--light);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
  }
  
  .bg-grid {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
      linear-gradient(rgba(0,240,255,0.05) 1px, transparent 1px),
      linear-gradient(90deg, rgba(0,240,255,0.05) 1px, transparent 1px);
    background-size: 50px 50px;
    z-index: -1;
    opacity: 0.4;
  }
  
  .container {
    width: 90%;
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
  }
  
  header {
    padding: 24px 0;
    position: sticky;
    top: 0;
    background: rgba(10,10,18,0.85);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
    z-index: 999;
  }
  
  header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
  }
  
  header h1 {
    font-size: 26px;
    font-weight: 700;
    color: var(--primary);
    letter-spacing: 1px;
  }
  
  nav a {
    color: var(--light);
    margin-left: 30px;
    text-decoration: none;
    font-size: 16px;
    font-weight: 500;
    transition: 0.3s;
  }
  
  nav a:hover {
    color: var(--primary);
    text-shadow: 0 0 8px var(--primary);
  }
  
  .hero {
    min-height: 80vh;
    display: flex;
    align-items: center;
    padding: 60px 0;
    text-align: center;
  }
  
  .hero h2 {
    font-size: 52px;
    font-weight: 900;
    line-height: 1.2;
    margin-bottom: 24px;
    text-transform: uppercase;
    letter-spacing: 2px;
  }
  
  .hero h2 span {
    color: var(--primary);
    text-shadow: 0 0 15px var(--primary);
  }
  
  .hero p {
    font-size: 18px;
    max-width: 700px;
    margin: 0 auto;
    color: var(--gray);
  }
  
  .card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 40px;
    margin-bottom: 30px;
    transition: 0.3s;
    backdrop-filter: blur(6px);
  }
  
  .card:hover {
    border-color: rgba(0,240,255,0.4);
    box-shadow: 0 0 25px rgba(0,240,255,0.1);
    transform: translateY(-4px);
  }
  
  .card h3 {
    font-size: 28px;
    color: var(--primary);
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 12px;
  }
  
  .card h3::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 60px;
    height: 3px;
    background: var(--primary);
    border-radius: 2px;
  }
  
  .card p, .card li {
    font-size: 17px;
    color: var(--light);
    margin-bottom: 12px;
  }
  
  .card ul {
    list-style: none;
    padding-left: 0;
  }
  
  .card li {
    position: relative;
    padding-left: 24px;
  }
  
  .card li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--primary);
    font-weight: bold;
  }
  
  .link {
    display: inline-block;
    margin-top: 10px;
    color: var(--primary);
    font-weight: 600;
    text-decoration: none;
    transition: 0.3s;
  }
  
  .link:hover {
    text-shadow: 0 0 8px var(--primary);
    padding-left: 6px;
  }
  
  footer {
    text-align: center;
    padding: 40px 20px;
    color: var(--gray);
    border-top: 1px solid var(--border);
    margin-top: 60px;
  }
  
  @media (max-width: 768px) {
    header .container {
      flex-direction: column;
      gap: 16px;
    }
  
    nav a {
      margin: 0 12px;
    }
  
    .hero h2 {
      font-size: 36px;
    }
  
    .card {
      padding: 28px 24px;
    }
  }