:root {
  --bg: oklch(0.11 0.025 242);
  --bg-deep: oklch(0.065 0.014 248);
  --fg: oklch(0.92 0.02 250);
  --fg-soft: oklch(0.78 0.02 248);
  --accent: oklch(0.72 0.08 197);
  --accent-soft: oklch(0.6 0.06 214);
  --space-xs: 0.5rem;
  --space-sm: 0.75rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2.5rem;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: "Chakra Petch", sans-serif;
  color: var(--fg);
  background:
    radial-gradient(circle at 78% 10%, color-mix(in oklch, var(--accent) 18%, transparent), transparent 36%),
    radial-gradient(circle at 10% 88%, color-mix(in oklch, var(--accent-soft) 20%, transparent), transparent 40%),
    radial-gradient(circle at 52% 42%, color-mix(in oklch, var(--accent-soft) 8%, transparent), transparent 60%),
    linear-gradient(145deg, var(--bg), var(--bg-deep));
  overflow: hidden;
}

#network {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}

.noise {
  position: fixed;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  background-image: radial-gradient(circle at center, transparent 0%, rgba(0, 0, 0, 0.25) 65%, rgba(0, 0, 0, 0.58) 100%);
}

.noise::after {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0.04;
  background: repeating-linear-gradient(
    180deg,
    transparent,
    transparent 2px,
    color-mix(in oklch, var(--accent-soft) 20%, transparent) 3px,
    transparent 4px
  );
  animation: driftScan 18s linear infinite;
}

.noise::before {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0.06;
  mix-blend-mode: screen;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 160 160' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size: 220px 220px;
  animation: shiftNoise 8s steps(8) infinite;
}

.shell {
  position: relative;
  z-index: 3;
  min-height: 100vh;
  width: min(92vw, 70rem);
  margin-inline: auto;
  display: grid;
  align-content: center;
  gap: var(--space-lg);
  padding: clamp(1.2rem, 4vw, 3rem);
  opacity: 0;
  transform: translateY(10px);
  animation: intro 1.2s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.eyebrow {
  margin: 0;
  font-size: 0.86rem;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: color-mix(in oklch, var(--fg-soft) 70%, var(--accent) 30%);
}

h1 {
  margin: 0;
  max-width: 20ch;
  font-family: "Bebas Neue", sans-serif;
  font-size: clamp(3.1rem, 11vw, 9rem);
  font-weight: 400;
  letter-spacing: 0.03em;
  line-height: 0.95;
  text-wrap: pretty;
  text-shadow: 0 0 1rem color-mix(in oklch, var(--accent) 18%, transparent);
}

.typewriter {
  display: inline;
}

.typewriter::after {
  content: "";
  display: inline-block;
  width: 0.08em;
  height: 0.84em;
  margin-left: 0.16em;
  vertical-align: baseline;
  background: color-mix(in oklch, var(--accent) 74%, var(--fg) 26%);
  box-shadow: 0 0 0.5rem color-mix(in oklch, var(--accent) 42%, transparent);
  animation: caretBlink 900ms steps(1) infinite;
}

.lead {
  margin: 0;
  max-width: 55ch;
  color: var(--fg-soft);
  line-height: 1.7;
  font-size: clamp(1rem, 2.3vw, 1.18rem);
}

.cta {
  width: fit-content;
  text-decoration: none;
  color: var(--fg);
  padding: 0.72rem 1.35rem;
  border: 1px solid color-mix(in oklch, var(--accent) 48%, var(--fg-soft) 52%);
  border-radius: 999px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 500;
  transition: transform 280ms cubic-bezier(0.16, 1, 0.3, 1),
    background-color 280ms cubic-bezier(0.16, 1, 0.3, 1),
    border-color 280ms cubic-bezier(0.16, 1, 0.3, 1),
    box-shadow 280ms cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: 0 0 0.35rem color-mix(in oklch, var(--accent) 12%, transparent);
}

.cta:hover,
.cta:focus-visible {
  transform: translateY(-2px);
  background-color: color-mix(in oklch, var(--accent) 18%, transparent);
  border-color: color-mix(in oklch, var(--accent) 70%, var(--fg) 30%);
  box-shadow: 0 0 0.7rem color-mix(in oklch, var(--accent) 24%, transparent);
}

@keyframes intro {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes shiftNoise {
  0% {
    background-position: 0 0;
  }
  100% {
    background-position: 100% 100%;
  }
}

@keyframes driftScan {
  0% {
    transform: translateY(-10px);
  }
  100% {
    transform: translateY(10px);
  }
}

@keyframes caretBlink {
  0%,
  45% {
    opacity: 1;
  }
  46%,
  100% {
    opacity: 0;
  }
}

@media (max-width: 780px) {
  body {
    overflow: auto;
  }

  .shell {
    min-height: 100dvh;
    align-content: end;
    padding-bottom: clamp(2rem, 8vh, 4rem);
    gap: var(--space-md);
  }

  h1 {
    max-width: 11ch;
    font-size: clamp(2.7rem, 13vw, 4.6rem);
  }

  .lead {
    max-width: 42ch;
    line-height: 1.8;
  }
}

@media (prefers-reduced-motion: reduce) {
  .shell,
  .noise::before,
  .noise::after,
  .cta,
  .typewriter::after {
    animation: none;
  }

  .cta {
    transition: none;
  }
}