* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  background: #000;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: system-ui, -apple-system, sans-serif;
}
.title {
  color: #00ff00;
  font-size: clamp(2rem, 8vw, 5rem);
  font-weight: 800;
  letter-spacing: -1px;
  text-shadow:
    0 0 10px #00ff00,
    0 0 30px #00ff00,
    0 0 60px #00ff00,
    0 0 100px #00ff00;
}