:root {
  color-scheme: dark;
  --bg: oklch(0.075 0 0);
  --surface: oklch(0.13 0.012 230);
  --surface-strong: oklch(0.18 0.02 230);
  --ink: oklch(0.94 0.01 230);
  --muted: oklch(0.68 0.026 230);
  --primary: oklch(0.65 0.21 13.5);
  --accent: oklch(0.78 0.15 194);
  --acid: oklch(0.82 0.17 142);
  --line: oklch(0.34 0.035 230 / 0.82);
  --max: 980px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  display: flex;
  flex-direction: column;
  margin: 0;
  min-height: 100svh;
  background:
    linear-gradient(oklch(0.15 0.014 230 / 0.42) 1px, transparent 1px),
    linear-gradient(90deg, oklch(0.15 0.014 230 / 0.42) 1px, transparent 1px),
    radial-gradient(circle at 15% 12%, oklch(0.58 0.18 13.5 / 0.32), transparent 18rem),
    radial-gradient(circle at 88% 18%, oklch(0.65 0.16 194 / 0.25), transparent 20rem),
    var(--bg);
  background-size: 34px 34px, 34px 34px, auto, auto, auto;
  color: var(--ink);
  font-family:
    ui-sans-serif,
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;
}

main {
  flex: 1;
}

body::before {
  animation: scan 7s linear infinite;
  background: linear-gradient(180deg, transparent, oklch(1 0 0 / 0.04), transparent);
  content: "";
  height: 12rem;
  left: 0;
  pointer-events: none;
  position: fixed;
  right: 0;
  top: -12rem;
  z-index: 4;
}

a {
  color: inherit;
  text-decoration: none;
}

.skip-link {
  background: var(--accent);
  color: var(--bg);
  left: 1rem;
  padding: 0.7rem 1rem;
  position: fixed;
  top: 1rem;
  transform: translateY(-150%);
  z-index: 10;
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  align-items: center;
  display: flex;
  justify-content: space-between;
  margin: 0 auto;
  max-width: var(--max);
  padding: 1rem;
  position: relative;
  z-index: 5;
}

.brand {
  align-items: center;
  display: flex;
  font-weight: 800;
  gap: 0.7rem;
}

.brand-mark {
  align-items: center;
  aspect-ratio: 1;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: var(--bg);
  display: inline-flex;
  font-size: 0.76rem;
  font-weight: 900;
  justify-content: center;
  width: 2.05rem;
}

.nav-links {
  display: none;
}

.hero {
  min-height: auto;
  overflow: hidden;
  position: relative;
}

#signal-canvas {
  height: 100%;
  inset: 0;
  opacity: 0.62;
  position: absolute;
  width: 100%;
}

.hero-inner {
  display: block;
  margin: 0 auto;
  max-width: var(--max);
  padding: clamp(2.2rem, 10svh, 4.8rem) 1rem 1rem;
  position: relative;
  z-index: 1;
}

.hero-copy-block {
  max-width: 38rem;
}

.hero-kicker,
.mini-note {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

.hero-kicker {
  color: var(--accent);
  font-size: 0.95rem;
  font-weight: 800;
  margin: 0 0 1rem;
}

h1,
p {
  margin-top: 0;
}

h1 {
  font-size: clamp(2.25rem, 11vw, 4.2rem);
  letter-spacing: -0.035em;
  line-height: 0.94;
  margin-bottom: 1rem;
  max-width: min(100%, 11ch);
  overflow-wrap: break-word;
  text-wrap: balance;
}

.hero-copy {
  color: oklch(0.86 0.018 230);
  font-size: 1.06rem;
  line-height: 1.55;
  margin-bottom: 1.35rem;
  max-width: 35rem;
}

.hero-actions {
  display: grid;
  gap: 0.75rem;
}

.button,
.link-strip a {
  background: linear-gradient(180deg, var(--surface-strong), var(--surface));
  border: 1px solid var(--line);
  min-height: 3.4rem;
  transition:
    border-color 180ms ease,
    transform 180ms ease,
    background 180ms ease;
}

.button {
  align-items: center;
  display: flex;
  font-weight: 850;
  justify-content: center;
  padding: 0.95rem 1rem;
}

.button.primary {
  background: var(--primary);
  border-color: var(--primary);
  color: var(--ink);
}

.button.secondary {
  color: var(--accent);
}

.button:hover,
.button:focus-visible,
.link-strip a:hover,
.link-strip a:focus-visible {
  border-color: var(--accent);
  outline: none;
  transform: translateY(-2px);
}

.mini-note {
  color: var(--muted);
  display: grid;
  gap: 0.35rem;
  font-size: 0.84rem;
  line-height: 1.45;
  margin-top: 1.25rem;
}

.link-strip {
  display: grid;
  gap: 0.7rem;
  margin: 0 auto;
  max-width: var(--max);
  padding: 0 1rem 1rem;
  position: relative;
  z-index: 2;
}

.link-strip a {
  align-items: center;
  display: grid;
  gap: 0.2rem;
  grid-template-columns: 5.6rem minmax(0, 1fr);
  padding: 0.85rem 1rem;
}

.link-strip span {
  color: var(--accent);
  font-weight: 850;
}

.link-strip strong {
  color: var(--ink);
  font-size: 1rem;
  line-height: 1.25;
  overflow-wrap: anywhere;
}

.site-footer {
  align-items: center;
  border-top: 1px solid var(--line);
  color: var(--muted);
  display: flex;
  font-size: 0.9rem;
  gap: 0.5rem;
  justify-content: space-between;
  padding: 1rem;
}

.site-footer p {
  margin: 0;
}

@keyframes scan {
  to {
    transform: translateY(calc(100vh + 12rem));
  }
}

@media (min-width: 720px) {
  .site-header {
    padding: 1.25rem 1.5rem;
  }

  .nav-links {
    align-items: center;
    background: oklch(0.12 0.01 230 / 0.78);
    border: 1px solid var(--line);
    display: flex;
  }

  .nav-links a {
    font-size: 0.92rem;
    font-weight: 750;
    padding: 0.72rem 0.9rem;
  }

  .nav-links a:hover,
  .nav-links a:focus-visible {
    background: oklch(0.74 0.15 194 / 0.16);
    color: var(--accent);
    outline: none;
  }

  .hero-inner {
    padding: clamp(5rem, 16svh, 8rem) 1.5rem 1.5rem;
  }

  h1 {
    font-size: clamp(4rem, 8vw, 5.4rem);
    max-width: 10ch;
  }

  .hero-copy {
    font-size: 1.18rem;
  }

  .hero-actions {
    display: flex;
    flex-wrap: wrap;
  }

  .button {
    min-width: 11.5rem;
  }

  .link-strip {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    padding: 0 1.5rem 1.5rem;
  }

  .link-strip a {
    align-content: center;
    grid-template-columns: 1fr;
    min-height: 6.5rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }

  #signal-canvas {
    display: none;
  }
}