:root {
  color-scheme: light;
  --paper: #f4f7f5;
  --surface: #ffffff;
  --ink: #17201c;
  --muted: #66716b;
  --line: #d9e0dc;
  --moss: #2c684e;
  --moss-soft: #dcece4;
  --blue-soft: #e2eaf3;
  --focus: #195cbd;
  --max: 1480px;
}

* { box-sizing: border-box; }

html {
  background: var(--paper);
  color: var(--ink);
  font-family: "Instrument Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.45;
}

body {
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
  background: var(--paper);
}

a { color: inherit; }

:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 5px;
}

.skip-link {
  position: fixed;
  z-index: 10;
  top: 12px;
  left: 12px;
  transform: translateY(-160%);
  border-radius: 999px;
  background: var(--ink);
  color: white;
  padding: 10px 16px;
}

.skip-link:focus { transform: none; }

.site-header,
main,
footer {
  width: min(calc(100% - 64px), var(--max));
  margin-inline: auto;
}

.site-header {
  min-height: 104px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
}

.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -.01em;
}

.wordmark em {
  color: var(--muted);
  font-style: normal;
  font-weight: 400;
}

.wordmark-mark {
  width: 30px;
  height: 30px;
  display: grid;
  place-items: center;
  border-radius: 9px;
  background: var(--ink);
  color: white;
  font-size: 13px;
  letter-spacing: -.04em;
}

.lab-state {
  display: flex;
  align-items: center;
  gap: 9px;
  margin: 0;
  color: var(--muted);
  font-family: "IBM Plex Mono", monospace;
  font-size: 10px;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.lab-state span {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--moss);
  box-shadow: 0 0 0 5px var(--moss-soft);
}

.intro {
  min-height: 510px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 440px);
  grid-template-rows: auto 1fr;
  column-gap: 80px;
  align-items: end;
  padding: 96px 0 88px;
}

.eyebrow {
  grid-column: 1 / -1;
  align-self: start;
  margin: 0;
  color: var(--moss);
  font-family: "IBM Plex Mono", monospace;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: .1em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  max-width: 960px;
  font-size: clamp(54px, 6.3vw, 104px);
  font-weight: 500;
  letter-spacing: -.065em;
  line-height: .97;
}

.intro-copy {
  margin: 0 0 8px;
  max-width: 410px;
  color: var(--muted);
  font-size: clamp(17px, 1.5vw, 21px);
  line-height: 1.55;
}

.journeys {
  padding-bottom: 48px;
}

.section-heading {
  min-height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--ink);
}

.section-heading h2,
.section-heading span {
  margin: 0;
  font-family: "IBM Plex Mono", monospace;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.section-heading span { color: var(--muted); }

.journey {
  border-top: 1px solid var(--line);
  padding: 28px 0 24px;
}

.journey:last-child { border-bottom: 1px solid var(--line); }

.journey-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 42px;
}

.journey-status,
.journey-version,
.journey-route,
.scenario-links {
  font-family: "IBM Plex Mono", monospace;
  font-size: 10px;
}

.journey-status {
  border-radius: 999px;
  padding: 6px 10px;
  text-transform: uppercase;
  letter-spacing: .07em;
}

.journey-status.locked { background: var(--moss-soft); color: var(--moss); }
.journey-status.study { background: var(--blue-soft); color: #345675; }
.journey-version { color: var(--muted); }

.journey-body {
  display: grid;
  grid-template-columns: minmax(260px, .9fr) minmax(320px, 1.15fr) auto;
  align-items: end;
  gap: 56px;
}

.journey-kind {
  margin: 0 0 6px;
  color: var(--muted);
  font-size: 13px;
}

.journey h3 {
  margin: 0;
  font-size: clamp(35px, 3.6vw, 58px);
  font-weight: 500;
  letter-spacing: -.05em;
  line-height: 1;
}

.journey-body > p {
  margin: 0;
  max-width: 580px;
  color: var(--muted);
  font-size: 16px;
}

.journey-link {
  min-width: 170px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  border-bottom: 1px solid var(--ink);
  padding: 12px 0;
  text-decoration: none;
  font-size: 14px;
  font-weight: 600;
}

.journey-link svg {
  width: 20px;
  height: 20px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
  transition: transform 180ms ease;
}

.journey-link:hover svg { transform: translateX(5px); }

.journey-route {
  margin: 40px 0 0;
  color: var(--muted);
  letter-spacing: .03em;
}

.journey-route span { margin: 0 10px; color: #a9b2ad; }

.scenario-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 18px;
  margin-top: 40px;
  color: var(--muted);
}

.scenario-links span {
  color: var(--ink);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: .07em;
}

.scenario-links a {
  text-underline-offset: 4px;
  text-decoration-color: #b8c1bc;
}

.scenario-links a:hover { color: var(--moss); }

footer {
  min-height: 150px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--muted);
  font-size: 12px;
}

footer p { margin: 0; }

footer span {
  font-family: "IBM Plex Mono", monospace;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: .08em;
}

@media (max-width: 980px) {
  .intro {
    grid-template-columns: 1fr;
    gap: 44px;
    padding-top: 72px;
  }

  .eyebrow { grid-column: 1; }
  .intro-copy { max-width: 640px; }

  .journey-body {
    grid-template-columns: 1fr 1fr;
    gap: 36px;
  }

  .journey-link { grid-column: 1 / -1; width: 180px; }
}

@media (max-width: 640px) {
  .site-header,
  main,
  footer { width: min(calc(100% - 36px), var(--max)); }

  .site-header { min-height: 84px; }
  .lab-state { font-size: 0; }

  .intro {
    min-height: 520px;
    padding: 62px 0 66px;
  }

  h1 { font-size: clamp(44px, 13vw, 66px); }

  .journey { padding-top: 22px; }
  .journey-meta { margin-bottom: 34px; }

  .journey-body {
    grid-template-columns: 1fr;
    gap: 26px;
  }

  .journey-link { grid-column: 1; width: 100%; }
  .journey-route { line-height: 1.9; }

  footer {
    align-items: flex-start;
    flex-direction: column;
    justify-content: center;
    gap: 12px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    scroll-behavior: auto !important;
    transition-duration: .01ms !important;
  }
}