:root {
  color-scheme: light;
  --ink: #14251d;
  --paper: #f4f7f5;
  --surface: #ffffff;
  --route: #2855ff;
  --route-soft: #dfe6ff;
  --muted: #53625a;
  --rule: #cfd8d2;
  --focus: #0a43ff;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--surface);
  color: var(--ink);
  font-family:
    Arial,
    Helvetica Neue,
    Helvetica,
    sans-serif;
}

body {
  margin: 0;
  min-width: 20rem;
}

a {
  color: inherit;
}

a:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 4px;
}

.page-shell {
  display: grid;
  grid-template-rows: auto 1fr auto;
  margin-inline: auto;
  min-height: 100vh;
  min-height: 100svh;
  max-width: 76rem;
  padding: 1.75rem 2rem 1.5rem;
}

.site-header {
  align-items: center;
  border-bottom: 1px solid var(--rule);
  display: flex;
  justify-content: space-between;
  padding-bottom: 1.5rem;
}

.wordmark {
  font-size: 0.92rem;
  font-weight: 800;
  letter-spacing: 0.24em;
  line-height: 1;
  text-decoration: none;
  text-transform: uppercase;
}

.status {
  align-items: center;
  background: var(--paper);
  border: 1px solid var(--rule);
  display: inline-flex;
  font-size: 0.7rem;
  font-weight: 700;
  gap: 0.6rem;
  letter-spacing: 0.14em;
  padding: 0.55rem 0.65rem;
  text-transform: uppercase;
}

.status span {
  background: var(--route);
  height: 0.5rem;
  width: 0.5rem;
}

main {
  display: grid;
}

.hero {
  align-content: center;
  display: grid;
  gap: 0 4rem;
  grid-template-areas:
    "route route"
    "eyebrow eyebrow"
    "title intro"
    "title availability";
  grid-template-columns: minmax(0, 2fr) minmax(15rem, 0.7fr);
  padding-block: 6.5rem 5rem;
}

.route {
  align-items: center;
  display: flex;
  grid-area: route;
  margin-bottom: 4.5rem;
  max-width: 34rem;
  width: 72%;
}

.route-start {
  background: var(--route);
  flex: 0 0 auto;
  height: 0.9rem;
  width: 0.9rem;
}

.route-track {
  background: var(--route);
  height: 2px;
  width: 100%;
}

.route-end {
  border-right: 2px solid var(--route);
  border-top: 2px solid var(--route);
  flex: 0 0 auto;
  height: 0.8rem;
  margin-left: -0.75rem;
  transform: rotate(45deg);
  width: 0.8rem;
}

.eyebrow {
  color: var(--route);
  font-size: 0.72rem;
  font-weight: 800;
  grid-area: eyebrow;
  letter-spacing: 0.16em;
  margin: 0 0 1.5rem;
  text-transform: uppercase;
}

.hero h1 {
  font-size: clamp(3rem, 8vw, 7.5rem);
  font-weight: 700;
  grid-area: title;
  letter-spacing: -0.065em;
  line-height: 0.9;
  margin: 0;
  max-width: 8ch;
}

.intro {
  align-self: start;
  color: var(--muted);
  font-size: clamp(1rem, 1.8vw, 1.25rem);
  grid-area: intro;
  line-height: 1.55;
  margin: 0;
  padding-top: 0.45rem;
}

.intro span {
  color: var(--ink);
  font-weight: 700;
  text-decoration-color: var(--route-soft);
  text-decoration-line: underline;
  text-decoration-thickness: 0.35em;
  text-underline-offset: -0.18em;
}

.availability {
  align-self: end;
  border-top: 1px solid var(--rule);
  color: var(--ink);
  font-size: 0.8rem;
  font-weight: 700;
  grid-area: availability;
  letter-spacing: 0.05em;
  margin: 3rem 0 0;
  padding-top: 1rem;
}

footer {
  border-top: 1px solid var(--rule);
  color: var(--muted);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  padding-top: 1.25rem;
  text-transform: uppercase;
}

.error-main {
  align-items: center;
}

.error-content {
  border-left: 0.75rem solid var(--route);
  padding: 2rem 0 2rem 2.5rem;
}

.error-code {
  color: var(--route);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  margin: 0 0 1rem;
}

.error-content h1 {
  font-size: clamp(3rem, 8vw, 6rem);
  letter-spacing: -0.055em;
  line-height: 0.95;
  margin: 0 0 2.5rem;
}

.home-link {
  border-bottom: 2px solid var(--route);
  display: inline-block;
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  padding-bottom: 0.25rem;
  text-decoration: none;
  text-transform: uppercase;
}

@media (max-width: 42rem) {
  .page-shell {
    padding: 1.25rem;
  }

  .site-header {
    align-items: flex-start;
    flex-direction: column;
    gap: 1rem;
  }

  .hero {
    gap: 0;
    grid-template-areas:
      "route"
      "eyebrow"
      "title"
      "intro"
      "availability";
    grid-template-columns: 1fr;
    padding-block: 4.5rem 3.5rem;
  }

  .hero h1 {
    max-width: 10ch;
  }

  .route {
    margin-bottom: 2.5rem;
    width: 88%;
  }

  .intro {
    margin-top: 2rem;
    max-width: 31rem;
  }

  .availability {
    margin-top: 2.5rem;
  }

  .error-content {
    border-left-width: 0.5rem;
    padding-left: 1.5rem;
  }
}