<style>
  @import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@700&display=swap');

  /* Reset básico */
  * {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }

  body {
    background: #000010;
    color: #00e5ff; /* Azul neón */
    font-family: 'Orbitron', sans-serif;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    overflow-x: hidden;
  }

  .container {
    max-width: 900px;
    text-align: center;
    padding: 2rem;
    border: 3px solid #00e5ff;
    border-radius: 15px;
    box-shadow:
      0 0 10px #00e5ff,
      0 0 20px #00e5ff,
      0 0 40px #00e5ff,
      0 0 80px #00e5ff;
    background: linear-gradient(135deg, #001529, #000010);
    position: relative;
    animation: neonPulse 3s ease-in-out infinite alternate;
  }

  /* Animación de pulso neón */
  @keyframes neonPulse {
    0% {
      box-shadow:
        0 0 10px #00e5ff,
        0 0 20px #00e5ff,
        0 0 40px #00e5ff,
        0 0 80px #00e5ff;
    }
    100% {
      box-shadow:
        0 0 20px #00ffff,
        0 0 30px #00ffff,
        0 0 60px #00ffff,
        0 0 100px #00ffff;
    }
  }

  h1 {
    font-size: 3rem;
    text-shadow:
      0 0 5px #00e5ff,
      0 0 10px #00e5ff,
      0 0 20px #00e5ff,
      0 0 40px #00e5ff;
    margin-bottom: 1rem;
  }

  p {
    font-size: 1.25rem;
    line-height: 1.6;
    margin-bottom: 2rem;
    color: #00e5ff;
    text-shadow: 0 0 5px #00b7d7;
  }

  .highlight {
    color: #ff00ff; /* Contraste neón rosa */
    font-weight: 700;
    text-shadow:
      0 0 10px #ff00ff,
      0 0 20px #ff00ff;
  }

  /* Botón neón */
  .btn-start {
    display: inline-block;
    padding: 1rem 3rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: #00e5ff;
    text-decoration: none;
    border: 3px solid #00e5ff;
    border-radius: 50px;
    box-shadow:
      0 0 10px #00e5ff,
      0 0 20px #00e5ff,
      0 0 30px #00e5ff;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
  }

  .btn-start:hover {
    color: #000010;
    background: #00e5ff;
    box-shadow:
      0 0 20px #00ffff,
      0 0 40px #00ffff,
      0 0 60px #00ffff;
  }

  /* Efecto rayo neón animado */
  .btn-start::before {
    content: '';
    position: absolute;
    top: 0; left: -75%;
    width: 50%;
    height: 100%;
    background: linear-gradient(120deg, transparent, rgba(255,255,255,0.6), transparent);
    transform: skewX(-25deg);
    transition: all 0.5s ease;
  }

  .btn-start:hover::before {
    left: 125%;
    transition: all 0.5s ease;
  }

  /* Fondo con rayos animados */
  body::before {
    content: "";
    position: fixed;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background:
      repeating-radial-gradient(circle at center,
        transparent 0 2px,
        #00e5ff 3px 4px);
    opacity: 0.05;
    animation: rotate 20s linear infinite;
    z-index: -1;
  }

  @keyframes rotate {
    from {transform: rotate(0deg);}
    to {transform: rotate(360deg);}
  }

  /* Responsive */
  @media (max-width: 600px) {
    h1 {
      font-size: 2.2rem;
    }
    p {
      font-size: 1rem;
    }
    .btn-start {
      padding: 0.8rem 2rem;
      font-size: 1.2rem;
    }
  }
</style>