:root {
      --aqua: #0ff6f6;
      --purple: #7524ff;
      --black-bg: #14151a;
      --glass-bg: rgba(25,28,37, 0.88);
      --card-border: rgba(93,241,255,0.17);
      --text-bright: #f3f9ff;
      --navbar-bg: rgba(25,28,37, 0.94);
    }
    body {
      margin: 0;
      font-family: 'Roboto', Arial, sans-serif;
      background: linear-gradient(135deg, #191b23 70%, #14151a 100%);
      color: var(--text-bright);
      min-height: 100vh;
      overflow-x: hidden;
      scroll-behavior: smooth;
    }
    /* Navbar */
    nav {
      width: 100%;
      background: var(--navbar-bg);
      position: fixed;
      top: 0; left: 0;
      z-index: 20;
      box-shadow: 0 2px 14px #191b2366;
      display: flex;
      justify-content: center;
      align-items: center;
      padding: 0.5em 0;
      backdrop-filter: blur(8px);
    }
    .navbar-content {
      width: 100%;
      max-width: 1240px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 0 2em;
    }
    .logo {
      font-family: 'Orbitron', Arial, sans-serif;
      font-size: 2rem;
      font-weight: 700;
      letter-spacing: 2px;
      background: linear-gradient(90deg, var(--aqua), var(--purple));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      display: flex;
      align-items: center;
      gap: 0.5em;
      filter: drop-shadow(0 1px 2px #0ff6f633);
      animation: glowPulse 2.7s ease-in-out infinite;
      margin-right: 0.7em;
    }
    .logo .icon {
      font-size: 1.7rem;
      filter: drop-shadow(0 0 7px #0ff6f644);
      margin-right: 0.2em;
    }
    .nav-links {
      display: flex;
      gap: 2.3em;
    }
    .nav-links a {
      color: var(--text-bright);
      text-decoration: none;
      font-family: 'Orbitron', Arial, sans-serif;
      font-weight: 600;
      letter-spacing: 1px;
      font-size: 1.1rem;
      padding: 0.4em 0.65em;
      border-radius: 7px;
      transition: color 0.22s, background 0.22s;
      position: relative;
    }
    .nav-links a:hover,
    .nav-links a.active {
      color: var(--aqua);
      background: rgba(0,255,255,0.08);
    }
    .nav-spacer {
      height: 64px;
    }
    /* Hero Banner */
    .hero-banner {
      text-align: center;
      padding: 4rem 1rem 2.5rem 1rem;
      max-width: 900px;
      margin: 0 auto 3rem auto;
      z-index: 2;
      position: relative;
    }
    .hero-banner h1 {
      font-family: 'Orbitron', Arial, sans-serif;
      font-size: 2.8rem;
      background: linear-gradient(90deg, var(--aqua), var(--purple));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      animation: glowPulse 2.8s ease-in-out infinite;
      margin-bottom: 1rem;
    }
    .hero-banner p {
      font-size: 1.25rem;
      color: #badaff;
      max-width: 670px;
      margin: 0 auto;
      font-weight: 400;
      line-height: 1.55;
    }
    /* Glass Card Styles */
    .glass-card {
      background: var(--glass-bg);
      border: 1.4px solid var(--card-border);
      border-radius: 1.5em;
      box-shadow: 0 3px 22px var(--aqua), 0 3px 12px var(--purple);
      backdrop-filter: blur(14px);
      color: var(--text-bright);
      padding: 2em 1.8em;
      margin: 1.8rem 0;
      max-width: 350px;
      flex: 1 1 300px;
      display: flex;
      flex-direction: column;
      align-items: center;
      text-align: center;
      transition: transform 0.22s ease, box-shadow 0.22s ease;
    }
    .glass-card:hover {
      transform: scale(1.05);
      box-shadow: 0 8px 40px var(--purple), 0 8px 30px var(--aqua);
    }
    .glass-card .icon {
      font-size: 3.2rem;
      margin-bottom: 0.6em;
      filter: drop-shadow(0 0 14px var(--aqua));
      color: var(--aqua);
    }
    .glass-card h3 {
      font-family: 'Orbitron', Arial, sans-serif;
      font-size: 1.4rem;
      background: linear-gradient(90deg, var(--aqua), var(--purple));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      font-weight: 700;
      animation: glowPulse 2.3s ease-in-out infinite;
      margin-bottom: 0.35em;
    }
    .glass-card p {
      font-size: 1rem;
      color: #d1eaff;
      margin: 0;
    }
    /* Flex container for multiple cards */
    .card-row {
      display: flex;
      flex-wrap: wrap;
      gap: 2rem;
      justify-content: center;
      max-width: 1100px;
      margin: 0 auto 3.5rem auto;
    }
    /* Section headline styles */
    section h2 {
      font-family: 'Orbitron', Arial, sans-serif;
      font-size: 2rem;
      text-align: center;
      background: linear-gradient(90deg, var(--aqua), var(--purple));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      margin-bottom: 1.8rem;
      animation: glowPulse 2.6s ease-in-out infinite;
    }
    /* Particle background canvas */
    #particles-js {
      position: fixed;
      width: 100vw;
      height: 100vh;
      top: 0; left: 0;
      pointer-events: none;
      z-index: 0;
    }
    /* Wave background SVG */
    .wave-bg {
      position: absolute;
      left: 0; bottom: 0;
      width: 100vw;
      z-index: 1;
      pointer-events: none;
    }
    /* Footer */
    footer {
      width: 100%;
      padding: 2rem 1rem 1rem 1rem;
      text-align: center;
      background: transparent;
      color: #a4e1fd;
      font-size: 1rem;
      z-index: 2;
      opacity: 0.92;
      margin-top: 4rem;
    }
    /* Animations */
    @keyframes glowPulse {
      0%, 100% { filter: drop-shadow(0 1px 2px #0ff6f633);}
      33% { filter: drop-shadow(0 1px 4px #0ff6f655);}
      66% { filter: drop-shadow(0 1px 3px #0ff6f688);}
    }
    /* Responsive */
    @media (max-width: 900px) {
      .card-row {
        flex-direction: column;
        align-items: center;
      }
    }
    @media (max-width: 600px) {
      .hero-banner h1 {
        font-size: 2rem;
      }
      nav .navbar-content {
        padding: 0 1rem;
      }
      .glass-card {
        max-width: 90vw;
      }
    }