:root {
  color-scheme: dark;
  --ink: #f2f0e8;
  --muted: #a8aba4;
  --paper: #101615;
  --surface: #18201e;
  --surface-soft: #1d2825;
  --line: #33413c;
  --acid: #c9f36a;
  --sky: #76b9d2;
  --rust: #d98a64;
  --max: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--paper);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
}

body {
  min-height: 100vh;
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 82% 8%, rgb(118 185 210 / 12%), transparent 32rem),
    linear-gradient(120deg, transparent 0 74%, rgb(201 243 106 / 3%) 74% 75%, transparent 75% 100%),
    var(--paper);
}

a {
  color: inherit;
}

.site-header,
main,
footer {
  width: min(calc(100% - 40px), var(--max));
  margin-inline: auto;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  padding-block: 28px;
  border-bottom: 1px solid var(--line);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 720;
  letter-spacing: .02em;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 38px;
  aspect-ratio: 1;
  place-items: center;
  border: 1px solid var(--acid);
  border-radius: 50%;
  color: var(--acid);
  font-size: .72rem;
  letter-spacing: .08em;
}

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}

nav a,
footer a {
  color: var(--muted);
  text-decoration: none;
}

nav a:hover,
nav a:focus-visible,
nav a[aria-current="page"],
footer a:hover,
footer a:focus-visible {
  color: var(--ink);
}

.hero {
  max-width: 870px;
  padding-block: clamp(74px, 12vw, 150px) clamp(68px, 10vw, 116px);
}

.eyebrow,
.note-meta,
.card-index,
.error-code {
  margin: 0 0 16px;
  color: var(--acid);
  font-size: .76rem;
  font-weight: 760;
  letter-spacing: .16em;
  text-transform: uppercase;
}

h1,
h2,
p,
blockquote {
  margin-top: 0;
}

h1 {
  max-width: 14ch;
  margin-bottom: 24px;
  font-size: clamp(3rem, 9vw, 7.8rem);
  font-weight: 760;
  letter-spacing: -.065em;
  line-height: .92;
}

.lead {
  max-width: 670px;
  margin-bottom: 30px;
  color: #c7cbc4;
  font-size: clamp(1.08rem, 2.2vw, 1.42rem);
}

.text-link {
  display: inline-flex;
  gap: 12px;
  align-items: center;
  color: var(--acid);
  font-weight: 720;
  text-underline-offset: 5px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: var(--line);
}

.card {
  min-height: 310px;
  padding: 34px;
  background: var(--surface);
}

.card h2,
.note-list h2,
.prose h2 {
  margin-bottom: 12px;
  font-size: 1.45rem;
  letter-spacing: -.025em;
}

.card p:last-child,
.note-list p:last-child,
.prose p {
  color: var(--muted);
}

.card-signal {
  background-image: linear-gradient(145deg, rgb(201 243 106 / 8%), transparent 55%);
}

.card-margin {
  background-image: linear-gradient(145deg, rgb(118 185 210 / 10%), transparent 55%);
}

.card-record {
  background-image: linear-gradient(145deg, rgb(217 138 100 / 9%), transparent 55%);
}

.dispatch {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 30px;
  padding-block: 110px;
}

.dispatch blockquote {
  max-width: 850px;
  margin-bottom: 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(1.8rem, 4vw, 3.5rem);
  letter-spacing: -.035em;
  line-height: 1.14;
}

.page-shell {
  max-width: 900px;
  padding-block: clamp(64px, 10vw, 120px);
}

.page-intro {
  padding-bottom: 56px;
  border-bottom: 1px solid var(--line);
}

.page-intro h1,
.not-found h1 {
  max-width: 12ch;
  font-size: clamp(2.8rem, 7vw, 6rem);
}

.note-list article,
.prose {
  padding-block: 42px;
  border-bottom: 1px solid var(--line);
}

.note-list h2,
.note-list p,
.prose h2,
.prose p {
  max-width: 720px;
}

.note-meta {
  margin-bottom: 10px;
  color: var(--sky);
}

.prose {
  font-size: 1.08rem;
}

.prose h2 {
  margin-top: 46px;
}

.not-found {
  min-height: 72vh;
  padding-block: clamp(80px, 14vw, 180px);
}

.not-found > p:not(.error-code) {
  color: var(--muted);
  font-size: 1.12rem;
}

.error-code {
  color: var(--rust);
}

footer {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding-block: 28px 42px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: .9rem;
}

@media (max-width: 760px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .grid {
    grid-template-columns: 1fr;
  }

  .card {
    min-height: auto;
  }

  .dispatch {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 460px) {
  .site-header,
  main,
  footer {
    width: min(calc(100% - 28px), var(--max));
  }

  nav {
    gap: 12px;
    font-size: .92rem;
  }

  footer {
    flex-direction: column;
  }
}

@media (prefers-reduced-motion: no-preference) {
  .text-link span {
    transition: transform 160ms ease;
  }

  .text-link:hover span,
  .text-link:focus-visible span {
    transform: translateX(4px);
  }
}