.cta-box {
  position: relative;
  overflow: hidden;
  border-radius: 42px;
  padding: 3.3rem;
  background:
    radial-gradient(circle at 12% 10%, rgba(155, 221, 34, .35), transparent 26rem),
    radial-gradient(circle at 86% 75%, rgba(112, 163, 10, .28), transparent 26rem),
    linear-gradient(135deg, #10220b, #061006);
  border: 1px solid rgba(155, 221, 34, .48);
  box-shadow: 0 36px 115px rgba(0, 0, 0, .46);
}

.cta-box:after {
  content: "";
  position: absolute;
  right: -4rem;
  bottom: -5rem;
  width: 20rem;
  height: 20rem;
  border-radius: 999px;
  background: radial-gradient(circle, rgba(155, 221, 34, .28), transparent 65%);
}

.cta-title {
  font-family: Orbitron, sans-serif;
  font-size: clamp(2rem, 3.5vw, 2.75rem);
  text-transform: uppercase;
  color: #fff;
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

@media (max-width: 640px) {
  .cta-box {
    padding: 2rem;
  }
}