.frontier {
  background: radial-gradient(ellipse at 78% 30%, rgba(155, 131, 190, .18), transparent 42%), #0b0b10;
}
.frontier-horizon {
  position: absolute;
  z-index: -1;
  inset: 30% 0 0;
  opacity: .6;
  background: linear-gradient(180deg, transparent, #0b0b10);
}
.frontier-horizon::before,
.frontier-horizon::after {
  position: absolute;
  inset: 10% -5% 0;
  content: "";
  clip-path: polygon(0 80%, 18% 58%, 30% 67%, 49% 28%, 60% 47%, 75% 6%, 87% 38%, 100% 19%, 100% 100%, 0 100%);
  background: linear-gradient(180deg, #342c42, #0c0c12);
}
.frontier-horizon::after {
  inset: 38% -5% 0;
  transform: scaleX(-1);
  background: linear-gradient(180deg, #1e1929, #08080d);
}
.frontier .hero-copy { max-width: 850px; }
.frontier-origins { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.frontier-note {
  max-width: 680px;
  margin: 32px 0 0;
  color: var(--muted);
  line-height: 1.8;
}
.frontier-status { border-top: 1px solid var(--line); }
.frontier-back { display: inline-block; margin-top: 20px; color: var(--accent); line-height: 1.6; }
.frontier-back:hover { text-decoration: underline; }
a:focus-visible { outline: 2px solid var(--accent); outline-offset: 6px; }
@media (max-width: 760px) {
  .frontier-origins { grid-template-columns: 1fr; }
  .frontier-horizon { opacity: .35; }
}