:root {
  color-scheme: dark;
  font-family: "Segoe UI", Arial, sans-serif;
  background: #080a0b;
  color: #f1f5ee;
  --neon: #c6ff6b;
}

* {
  box-sizing: border-box;
}

body {
  min-height: 100vh;
  min-height: 100svh;
  margin: 0;
  padding: clamp(1.5rem, 4vw, 3.5rem);
  display: grid;
  grid-template-rows: auto 1fr auto;
  background:
    radial-gradient(ellipse at 50% 48%, #c6ff6b09, transparent 48%),
    radial-gradient(ellipse at 85% 10%, #7963ff0b, transparent 40%),
    #080a0b;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: -0.04em;
}

.brand-mark {
  width: 1.6rem;
  height: 0.35rem;
  border-radius: 1rem;
  background: var(--neon);
  box-shadow: 0 0 12px #c6ff6b70;
}

main {
  align-self: center;
  justify-self: center;
  width: 100%;
  max-width: 60rem;
  padding: 4rem 0;
  text-align: center;
}

.eyebrow {
  margin: 0 0 2rem;
  color: #a5afa1;
  font-family: "Consolas", "Courier New", monospace;
  font-size: 0.75rem;
  line-height: 1.8;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: clamp(4.5rem, 15vw, 11rem);
  font-weight: 800;
  line-height: 0.9;
  letter-spacing: -0.065em;
}

h1 span {
  color: var(--neon);
  text-shadow:
    0 0 16px #c6ff6b45,
    0 0 64px #c6ff6b30,
    0 0 120px #c6ff6b18;
}

.beam {
  width: min(70%, 27rem);
  height: 3px;
  margin: 3rem auto 2rem;
  border-radius: 100%;
  background: linear-gradient(90deg, transparent, var(--neon), #f0ffd8, var(--neon), transparent);
  box-shadow: 0 0 18px #c6ff6b55, 0 0 48px #c6ff6b25;
  animation: breathe 5s ease-in-out infinite;
}

.tagline {
  margin: 0;
  color: #a5afa1;
  font-size: clamp(0.85rem, 2vw, 1rem);
  line-height: 1.6;
}

footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
  color: #a5afa1;
  font-family: "Consolas", "Courier New", monospace;
  font-size: 0.75rem;
  letter-spacing: 0.04em;
}

a {
  color: inherit;
  text-decoration: none;
  text-underline-offset: 0.3em;
}

a:hover {
  color: var(--neon);
  text-decoration: underline;
}

a:focus-visible {
  outline: 2px solid var(--neon);
  outline-offset: 6px;
}

@keyframes breathe {
  50% {
    opacity: 0.5;
  }
}

@media (prefers-reduced-motion: reduce) {
  .beam {
    animation: none;
  }
}