:root {
  color-scheme: light;
  --paper: #ece9df;
  --paper-deep: #dfdbce;
  --ink: #0b0c0d;
  --muted: #5d605e;
  --line: #aaa79d;
  --teal: #076a72;
  --orange: #d65a2f;
  --white: #f7f5ed;
  font-family:
    Inter,
    ui-sans-serif,
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    'Segoe UI',
    sans-serif;
  font-synthesis: none;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scrollbar-color: var(--teal) var(--paper-deep);
  scrollbar-width: thin;
}

::-webkit-scrollbar {
  width: 12px;
}

::-webkit-scrollbar-track {
  background: var(--paper-deep);
}

::-webkit-scrollbar-thumb {
  border: 3px solid var(--paper-deep);
  background: var(--teal);
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  line-height: 1.45;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(to right, rgb(11 12 13 / 5%) 1px, transparent 1px),
    linear-gradient(to bottom, rgb(11 12 13 / 5%) 1px, transparent 1px);
  background-size: 32px 32px;
  content: '';
  pointer-events: none;
}

a {
  color: inherit;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
}

img {
  display: block;
  max-width: 100%;
}

.skip-link {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: 100;
  padding: 10px 14px;
  background: var(--ink);
  color: var(--white);
  transform: translateY(-150%);
}

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

.site-header {
  position: relative;
  z-index: 10;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  min-height: 72px;
  border-bottom: 1px solid var(--ink);
  background: rgb(236 233 223 / 94%);
  backdrop-filter: blur(8px);
}

.brand,
.site-header nav,
.header-link {
  min-height: 72px;
  padding: 0 28px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  width: fit-content;
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-decoration: none;
  text-transform: uppercase;
}

.brand-mark {
  display: grid;
  width: 36px;
  height: 36px;
  place-items: center;
  border: 1px solid var(--ink);
  background: var(--teal);
  color: var(--white);
  font-family: 'SFMono-Regular', Consolas, monospace;
  font-size: 0.7rem;
}

.site-header nav {
  display: flex;
  align-items: center;
  gap: 28px;
  border-right: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.site-header nav a,
.header-link {
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-decoration: none;
  text-transform: uppercase;
}

.site-header nav a {
  display: flex;
  min-height: 44px;
  align-items: center;
}

.site-header nav a:hover,
.site-header nav a:focus-visible,
.header-link:hover,
.header-link:focus-visible {
  color: var(--teal);
}

.header-link {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
}

.hero {
  display: grid;
  grid-template-columns: minmax(300px, 0.78fr) minmax(0, 1.22fr);
  min-height: calc(100vh - 72px);
  border-bottom: 1px solid var(--ink);
}

.hero-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(48px, 7vw, 112px) clamp(28px, 5vw, 80px);
  border-right: 1px solid var(--ink);
}

.kicker {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0 0 30px;
  font-family: 'SFMono-Regular', Consolas, monospace;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.kicker span {
  display: inline-grid;
  width: 30px;
  height: 22px;
  place-items: center;
  background: var(--ink);
  color: var(--white);
}

h1,
h2,
h3,
p {
  text-wrap: pretty;
}

h1 {
  margin: 0;
  font-size: clamp(4rem, 8vw, 8.7rem);
  font-weight: 900;
  letter-spacing: -0.075em;
  line-height: 0.76;
  text-transform: uppercase;
}

h1 em {
  color: var(--teal);
  font-family: Georgia, 'Times New Roman', serif;
  font-weight: 500;
  letter-spacing: -0.04em;
  text-transform: none;
}

.hero-summary {
  max-width: 40rem;
  margin: 42px 0 0;
  font-size: clamp(1rem, 1.25vw, 1.22rem);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  padding: 0 18px;
  border: 1px solid var(--ink);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-decoration: none;
  text-transform: uppercase;
  transition:
    transform 140ms ease,
    background-color 140ms ease,
    color 140ms ease;
}

.button:hover,
.button:focus-visible {
  transform: translate(-2px, -2px);
}

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

.button-primary:hover,
.button-primary:focus-visible {
  background: var(--teal);
}

.button-secondary:hover,
.button-secondary:focus-visible {
  background: var(--white);
}

.hero-visual {
  position: relative;
  display: flex;
  min-width: 0;
  flex-direction: column;
  justify-content: center;
  overflow: hidden;
  padding: clamp(24px, 5vw, 72px);
  background: var(--ink);
  color: var(--white);
}

.hero-visual::after {
  position: absolute;
  right: 4%;
  bottom: 12%;
  width: 22%;
  height: 52%;
  border: 1px solid rgb(247 245 237 / 22%);
  content: '';
  pointer-events: none;
}

.frame-label,
.tour-meta {
  display: flex;
  justify-content: space-between;
  font-family: 'SFMono-Regular', Consolas, monospace;
  font-size: 0.63rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.frame-label {
  margin-bottom: 12px;
  color: #b8bab6;
}

.hero-visual > img {
  position: relative;
  z-index: 1;
  width: 100%;
  border: 1px solid #4f514f;
}

.hero-facts {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin: 14px 0 0;
  border: 1px solid #4f514f;
  background: var(--ink);
}

.hero-facts div {
  padding: 12px;
}

.hero-facts div + div {
  border-left: 1px solid #4f514f;
}

.hero-facts dt {
  color: #989b97;
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero-facts dd {
  margin: 3px 0 0;
  font-family: 'SFMono-Regular', Consolas, monospace;
  font-size: 0.78rem;
}

.ticker {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-bottom: 1px solid var(--ink);
  background: var(--orange);
  color: var(--ink);
}

.ticker span {
  padding: 18px 20px;
  font-size: 0.7rem;
  font-weight: 900;
  letter-spacing: 0.1em;
  text-align: center;
  text-transform: uppercase;
}

.ticker span + span {
  border-left: 1px solid var(--ink);
}

.section-grid {
  display: grid;
  grid-template-columns: minmax(260px, 0.72fr) minmax(0, 1.28fr);
  border-bottom: 1px solid var(--ink);
}

.section-heading {
  padding: clamp(56px, 7vw, 112px) clamp(28px, 5vw, 80px);
}

.section-heading h2,
.start h2 {
  max-width: 12ch;
  margin: 0;
  font-size: clamp(2.7rem, 5vw, 5.8rem);
  letter-spacing: -0.055em;
  line-height: 0.92;
}

.principle-list {
  margin: 0;
  padding: 0;
  border-left: 1px solid var(--ink);
  list-style: none;
}

.principle-list li {
  display: grid;
  grid-template-columns: 76px 1fr;
  min-height: 210px;
  align-items: start;
  padding: clamp(34px, 5vw, 62px);
}

.principle-list li + li {
  border-top: 1px solid var(--line);
}

.principle-number {
  color: var(--teal);
  font-family: 'SFMono-Regular', Consolas, monospace;
  font-weight: 700;
}

.principle-list h3 {
  margin: 0 0 12px;
  font-size: clamp(1.5rem, 2.4vw, 2.5rem);
  letter-spacing: -0.035em;
}

.principle-list p {
  max-width: 42rem;
  margin: 0;
  color: var(--muted);
  font-size: 1rem;
}

.tour {
  border-bottom: 1px solid var(--ink);
  background: var(--ink);
  color: var(--white);
}

.tour-heading {
  display: grid;
  grid-template-columns: 1fr minmax(280px, 0.7fr);
  align-items: end;
  gap: 20px;
}

.tour-heading .kicker,
.tour-heading h2 {
  grid-column: 1;
}

.tour-heading > p:last-child {
  grid-row: 1 / span 2;
  grid-column: 2;
  max-width: 28rem;
  margin: 0;
  color: #b6b8b3;
}

.tour-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid #4c4d4a;
}

.tour-item {
  margin: 0;
  padding: clamp(18px, 3vw, 42px);
  border-bottom: 1px solid #4c4d4a;
}

.tour-item:nth-child(odd) {
  border-right: 1px solid #4c4d4a;
}

.tour-item-wide {
  grid-column: 1 / -1;
}

.tour-item-wide:nth-child(odd) {
  border-right: 0;
}

.tour-meta {
  margin-bottom: 14px;
  color: #a8aaa6;
}

.tour-item img {
  width: 100%;
  border: 1px solid #4c4d4a;
  background: #111;
}

.tour-item figcaption {
  max-width: 42rem;
  margin-top: 16px;
  color: #b6b8b3;
  font-size: 0.88rem;
}

.flow-track {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  align-self: stretch;
  border-left: 1px solid var(--ink);
}

.flow-track div {
  position: relative;
  display: flex;
  min-height: 280px;
  flex-direction: column;
  justify-content: flex-end;
  padding: 28px 20px;
}

.flow-track div + div {
  border-left: 1px solid var(--line);
}

.flow-track span {
  position: absolute;
  top: 22px;
  left: 20px;
  font-family: 'SFMono-Regular', Consolas, monospace;
  font-size: 0.7rem;
}

.flow-track strong {
  font-size: 1.1rem;
  text-transform: uppercase;
}

.flow-track small {
  margin-top: 4px;
  color: var(--muted);
}

.flow-track div:nth-child(2) {
  background: var(--paper-deep);
}

.flow-track div:nth-child(3) {
  background: var(--teal);
  color: var(--white);
}

.flow-track div:nth-child(3) small {
  color: #d5edeb;
}

.start {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border-bottom: 1px solid var(--ink);
  background: var(--orange);
}

.start-copy {
  padding: clamp(56px, 7vw, 112px) clamp(28px, 5vw, 80px);
  border-right: 1px solid var(--ink);
}

.start-copy > p:not(.kicker) {
  max-width: 38rem;
  margin: 28px 0 20px;
}

.start-copy > a {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  font-weight: 800;
}

.start pre {
  display: flex;
  min-width: 0;
  align-items: center;
  margin: 0;
  overflow-x: auto;
  padding: clamp(40px, 6vw, 88px);
  background: var(--ink);
  color: var(--white);
  font-family: 'SFMono-Regular', Consolas, monospace;
  font-size: clamp(0.82rem, 1.3vw, 1.05rem);
  line-height: 2;
}

.start code span {
  color: #4bb6b7;
}

.start code i {
  color: #929590;
  font-style: normal;
}

footer {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 40px;
  padding: 48px clamp(28px, 5vw, 80px);
  background: var(--white);
}

footer strong {
  font-size: 1.2rem;
  text-transform: uppercase;
}

footer p {
  margin: 6px 0 0;
  color: var(--muted);
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(2, auto);
  gap: 8px 28px;
  align-content: center;
  font-size: 0.75rem;
  font-weight: 800;
  text-transform: uppercase;
}

.footer-links a {
  display: flex;
  min-height: 44px;
  align-items: center;
}

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

@media (max-width: 980px) {
  .site-header {
    grid-template-columns: 1fr auto;
  }

  .site-header nav {
    display: none;
  }

  .hero,
  .section-grid,
  .start {
    grid-template-columns: 1fr;
  }

  .hero-copy,
  .section-heading,
  .start-copy {
    border-right: 0;
    border-bottom: 1px solid var(--ink);
  }

  .hero {
    min-height: auto;
  }

  .hero-visual {
    min-height: 58vw;
  }

  .principle-list,
  .flow-track {
    border-left: 0;
  }

  .flow-track {
    border-top: 1px solid var(--ink);
  }
}

@media (max-width: 680px) {
  .brand,
  .header-link {
    min-height: 60px;
    padding: 0 16px;
  }

  .site-header {
    min-height: 60px;
  }

  .brand span:last-child {
    display: none;
  }

  .hero-copy {
    padding: 46px 20px 52px;
  }

  h1 {
    font-size: clamp(3.7rem, 21vw, 6rem);
  }

  .hero-visual {
    min-height: 0;
    padding: 20px;
  }

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

  .hero-facts div + div {
    border-top: 1px solid #4f514f;
    border-left: 0;
  }

  .ticker {
    grid-template-columns: repeat(2, 1fr);
  }

  .ticker span:nth-child(3) {
    border-top: 1px solid var(--ink);
    border-left: 0;
  }

  .ticker span:nth-child(4) {
    border-top: 1px solid var(--ink);
  }

  .section-heading,
  .start-copy {
    padding: 56px 20px;
  }

  .principle-list li {
    grid-template-columns: 42px 1fr;
    min-height: 0;
    padding: 36px 20px;
  }

  .tour-heading {
    display: block;
  }

  .tour-heading > p:last-child {
    margin-top: 24px;
  }

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

  .tour-item,
  .tour-item-wide {
    grid-column: auto;
    border-right: 0;
  }

  .flow-track {
    grid-template-columns: repeat(2, 1fr);
  }

  .flow-track div {
    min-height: 190px;
  }

  .flow-track div:nth-child(3) {
    border-left: 0;
  }

  .flow-track div:nth-child(n + 3) {
    border-top: 1px solid var(--line);
  }

  .start pre {
    padding: 42px 20px;
  }

  footer {
    grid-template-columns: 1fr;
    padding: 40px 20px;
  }

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

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}