@font-face {
  font-family: "Atkinson Hyperlegible Next";
  src: url("./assets/fonts/atkinson-hyperlegible-next-latin.woff2") format("woff2");
  font-style: normal;
  font-weight: 400 600;
  font-display: swap;
}

@font-face {
  font-family: "Barlow Condensed";
  src: url("./assets/fonts/barlow-condensed-500-latin.woff2") format("woff2");
  font-style: normal;
  font-weight: 500;
  font-display: swap;
}

@font-face {
  font-family: "Barlow Condensed";
  src: url("./assets/fonts/barlow-condensed-600-latin.woff2") format("woff2");
  font-style: normal;
  font-weight: 600;
  font-display: swap;
}

@font-face {
  font-family: "Barlow Condensed";
  src: url("./assets/fonts/barlow-condensed-700-latin.woff2") format("woff2");
  font-style: normal;
  font-weight: 700;
  font-display: swap;
}

:root {
  color-scheme: dark;
  --ink: #11100d;
  --field: #191711;
  --raised: #211e17;
  --chalk: #f2ecde;
  --paper: #d8cfbd;
  --muted: #aa9f8c;
  --brass: #d9a927;
  --brass-pale: #f0ca62;
  --line: #5c5446;
  --line-soft: #342f27;
  --shell: min(90rem, calc(100% - 3rem));
  --display: "Barlow Condensed", sans-serif;
  --body: "Atkinson Hyperlegible Next", sans-serif;
  --mono: "SFMono-Regular", "Cascadia Code", "Liberation Mono", monospace;
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 6rem;
}

body {
  margin: 0;
  background: var(--ink);
  color: var(--chalk);
  font-family: var(--body);
  font-size: 1rem;
  line-height: 1.58;
  text-rendering: optimizeLegibility;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(96deg, transparent 0 17%, rgba(242, 236, 222, 0.018) 17.1% 17.2%, transparent 17.3% 63%, rgba(242, 236, 222, 0.014) 63.1% 63.2%, transparent 63.3%),
    linear-gradient(104deg, transparent 0 42%, rgba(217, 169, 39, 0.018) 42.1% 42.18%, transparent 42.3%);
  content: "";
  pointer-events: none;
}

::selection {
  background: var(--brass);
  color: var(--ink);
}

::-webkit-scrollbar {
  width: 0.75rem;
}

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

::-webkit-scrollbar-thumb {
  border: 0.2rem solid var(--ink);
  background: var(--line);
}

a {
  color: inherit;
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.2em;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

:where(a, button):focus-visible {
  outline: 0.2rem solid var(--brass-pale);
  outline-offset: 0.25rem;
}

button {
  font: inherit;
}

h1,
h2,
h3,
p,
figure,
dl,
dd,
ol,
ul {
  margin-top: 0;
}

h1,
h2,
h3 {
  text-wrap: balance;
}

h1,
h2 {
  font-family: var(--display);
  letter-spacing: -0.025em;
  line-height: 0.92;
}

h1 {
  max-width: 10ch;
  margin-bottom: 1.75rem;
  font-size: clamp(4.15rem, 8.3vw, 6rem);
  font-weight: 600;
  text-transform: uppercase;
}

h1 span {
  color: var(--brass-pale);
}

h2 {
  max-width: 12ch;
  margin-bottom: 1.5rem;
  font-size: clamp(3.2rem, 6vw, 5.5rem);
  font-weight: 600;
  text-transform: uppercase;
}

h3 {
  font-size: 1.05rem;
  line-height: 1.3;
}

.shell {
  width: var(--shell);
  margin-inline: auto;
}

.skip-link {
  position: fixed;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 100;
  padding: 0.75rem 1rem;
  background: var(--brass);
  color: var(--ink);
  font-weight: 600;
  transform: translateY(-160%);
  transition: transform 180ms var(--ease-out);
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid var(--line-soft);
  background: rgba(17, 16, 13, 0.97);
}

.header-inner {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  min-height: 5rem;
  gap: 2rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  justify-self: start;
  gap: 0.65rem;
  font-family: var(--display);
  font-size: 1.65rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  line-height: 1;
  text-decoration: none;
  text-transform: uppercase;
}

.brand-mark {
  width: 2rem;
  height: 2rem;
  overflow: visible;
  fill: none;
  stroke: var(--brass);
  stroke-linecap: square;
  stroke-linejoin: bevel;
  stroke-width: 2.5;
}

nav ul {
  display: flex;
  margin: 0;
  padding: 0;
  gap: 2rem;
  list-style: none;
}

nav a,
.source-link {
  color: var(--paper);
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
}

nav a:hover,
.source-link:hover,
.footer-links a:hover {
  color: var(--brass-pale);
  text-decoration: underline;
}

.source-link {
  justify-self: end;
  padding-bottom: 0.15rem;
  border-bottom: 1px solid var(--brass);
}

.hero {
  position: relative;
  min-height: calc(100svh - 5rem);
  overflow: hidden;
  border-bottom: 1px solid var(--line);
}

.hero-cut {
  position: absolute;
  top: 0;
  left: 56%;
  width: min(14vw, 13rem);
  height: 100%;
  background: var(--brass);
  clip-path: polygon(0 0, 100% 0, 33% 50%, 100% 100%, 0 100%, 67% 50%);
  opacity: 0.92;
}

.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(29rem, 0.92fr);
  align-items: center;
  min-height: calc(100svh - 5rem);
  gap: clamp(4rem, 8vw, 9rem);
  padding-block: 5rem;
}

.hero-copy {
  position: relative;
  z-index: 2;
}

.hero-lede,
.section-heading > p,
.record-copy > p,
.install-grid > div:first-child > p {
  max-width: 66ch;
  color: var(--paper);
  font-size: clamp(1.05rem, 1.5vw, 1.25rem);
}

.hero-lede {
  max-width: 56ch;
  margin-bottom: 2.25rem;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  margin-bottom: 4rem;
  gap: 1.5rem;
}

.hero-actions .text-link {
  order: 1;
}

.hero-actions .button-primary {
  order: 2;
  transform: translateX(clamp(2rem, 6vw, 6rem));
}

.button {
  display: inline-flex;
  min-height: 3.2rem;
  align-items: center;
  justify-content: center;
  padding: 0.78rem 1.25rem;
  font-weight: 600;
  text-decoration: none;
}

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

.button-primary:hover {
  background: var(--brass-pale);
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  color: var(--paper);
  font-weight: 500;
  text-decoration: none;
}

.text-link svg {
  width: 1.2rem;
  fill: none;
  stroke: currentcolor;
  stroke-width: 1.5;
  transition: transform 180ms var(--ease-out);
}

.text-link:hover {
  color: var(--brass-pale);
}

.text-link:hover svg {
  transform: translateX(0.25rem);
}

.hero-facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  max-width: 43rem;
  margin-bottom: 0;
  border-top: 1px solid var(--line);
}

.hero-facts div {
  padding: 1rem 1rem 0 0;
}

.hero-facts div + div {
  padding-left: 1rem;
  border-left: 1px solid var(--line-soft);
}

.hero-facts dt,
.run-evidence > span,
.record-sample figcaption,
.terminal-heading,
.ledger-head {
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero-facts dd {
  margin: 0.2rem 0 0;
  color: var(--chalk);
  font-size: 0.9rem;
}

.run-cross-section {
  position: relative;
  z-index: 3;
  margin: 0;
  border-top: 1px solid var(--chalk);
  border-bottom: 1px solid var(--chalk);
  background: var(--ink);
}

.run-cross-section figcaption {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 0;
  border-bottom: 1px solid var(--line-soft);
  font-family: var(--mono);
  font-size: 0.73rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.run-status {
  color: var(--brass-pale);
}

.run-rail {
  position: absolute;
  top: 4.7rem;
  bottom: 10.2rem;
  left: 1.35rem;
  width: 1px;
  background: var(--line-soft);
}

.run-progress {
  position: absolute;
  top: 0;
  left: 0;
  width: 1px;
  height: 100%;
  background: var(--brass);
  transform: scaleY(var(--stage-progress, 0));
  transform-origin: top;
  transition: transform 520ms var(--ease-out);
}

.run-marker {
  position: absolute;
  top: var(--stage-position, 0%);
  left: -0.3rem;
  width: 0.65rem;
  height: 0.65rem;
  border: 1px solid var(--brass-pale);
  background: var(--ink);
  transform: rotate(45deg) translate(-16%, -16%);
  transition: top 520ms var(--ease-out);
}

.run-stages {
  padding: 0.35rem 0;
}

.run-stage {
  display: grid;
  width: 100%;
  grid-template-columns: 3rem 1fr auto;
  align-items: center;
  padding: 0.85rem 0.1rem 0.85rem 2.6rem;
  border: 0;
  border-bottom: 1px solid var(--line-soft);
  background: transparent;
  color: var(--paper);
  text-align: left;
  cursor: pointer;
}

.run-stage:last-child {
  border-bottom: 0;
}

.run-stage:hover {
  color: var(--chalk);
}

.run-stage.is-active {
  background: var(--brass);
  color: var(--ink);
}

.stage-index,
.stage-state {
  font-family: var(--mono);
  font-size: 0.72rem;
  font-variant-numeric: tabular-nums;
}

.stage-state {
  padding-right: 0.1rem;
  opacity: 0.8;
}

.stage-name {
  font-weight: 500;
}

.run-evidence {
  min-height: 9rem;
  padding: 1.25rem 0 1.35rem;
  border-top: 1px solid var(--chalk);
}

.run-evidence > span,
.run-evidence strong,
.run-evidence p {
  display: block;
  padding-inline: 2.6rem 0.1rem;
}

.run-evidence strong {
  margin-top: 0.45rem;
  color: var(--brass-pale);
  font-size: 1rem;
}

.run-evidence p {
  max-width: 54ch;
  margin: 0.2rem 0 0;
  color: var(--paper);
  font-size: 0.9rem;
}

.run-cross-section.has-entered .run-stages::after {
  display: block;
  position: absolute;
  top: 3.72rem;
  left: 0;
  width: 24%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--brass-pale), transparent);
  content: "";
  animation: evidence-pass 900ms var(--ease-out) both;
  pointer-events: none;
}

@keyframes evidence-pass {
  from {
    transform: translateX(-100%);
    opacity: 0;
  }
  18% {
    opacity: 1;
  }
  to {
    transform: translateX(420%);
    opacity: 0;
  }
}

.section {
  padding-block: clamp(6rem, 12vw, 11rem);
  border-bottom: 1px solid var(--line-soft);
}

.section-grid,
.record-grid,
.install-grid {
  display: grid;
  grid-template-columns: minmax(18rem, 0.75fr) minmax(0, 1.25fr);
  gap: clamp(4rem, 10vw, 10rem);
}

.section-heading {
  position: sticky;
  top: 8rem;
  align-self: start;
}

.section-heading > p {
  max-width: 42ch;
}

.action-sequence {
  margin-bottom: 0;
  padding: 0;
  border-top: 1px solid var(--chalk);
  list-style: none;
}

.action-sequence li {
  display: grid;
  grid-template-columns: 7rem minmax(0, 1fr) auto;
  align-items: start;
  padding: 2rem 0;
  gap: 1.5rem;
  border-bottom: 1px solid var(--line);
}

.action-verb,
.action-sequence code {
  color: var(--brass-pale);
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
}

.action-sequence h3 {
  margin-bottom: 0.45rem;
}

.action-sequence p {
  max-width: 58ch;
  margin-bottom: 0;
  color: var(--paper);
}

.action-sequence code {
  color: var(--muted);
  text-align: right;
}

.boundary-section {
  background: var(--brass);
  color: var(--ink);
}

.boundary-statement {
  display: grid;
  grid-template-columns: 1.25fr 0.75fr;
  align-items: end;
  margin-bottom: clamp(5rem, 9vw, 9rem);
  gap: 3rem;
}

.boundary-statement h2 {
  max-width: 10ch;
  margin-bottom: 0;
}

.boundary-statement p {
  max-width: 48ch;
  margin-bottom: 1.5rem;
  font-size: 1.12rem;
}

.boundary-statement .text-link {
  color: var(--ink);
}

.boundary-ledger {
  border-top: 2px solid var(--ink);
}

.boundary-ledger dl {
  margin: 0;
}

.ledger-row,
.ledger-head {
  display: grid;
  grid-template-columns: 0.75fr 1fr 1fr;
  padding: 1.25rem 0;
  gap: 2rem;
  border-bottom: 1px solid rgba(17, 16, 13, 0.48);
}

.ledger-row dt,
.ledger-row dd {
  margin-bottom: 0;
}

.ledger-row dt {
  font-weight: 600;
}

.ledger-row dd {
  margin-left: 0;
  max-width: 36ch;
}

.ledger-head {
  color: rgba(17, 16, 13, 0.68);
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.ledger-label {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

.record-grid {
  align-items: center;
}

.record-copy > p {
  max-width: 52ch;
}

.retention-contrast {
  display: grid;
  grid-template-columns: 1fr 1fr;
  margin-top: 3rem;
  border-top: 1px solid var(--line);
}

.retention-contrast > div {
  padding-top: 1.25rem;
}

.retention-contrast > div + div {
  padding-left: 2rem;
  border-left: 1px solid var(--line-soft);
}

.retention-contrast h3 {
  color: var(--brass-pale);
}

.retention-contrast ul {
  margin-bottom: 0;
  padding-left: 1.1rem;
  color: var(--paper);
}

.retention-contrast li + li {
  margin-top: 0.4rem;
}

.record-sample {
  margin: 0;
  border-top: 1px solid var(--chalk);
  border-bottom: 1px solid var(--chalk);
  background: #0b0b09;
}

.record-sample figcaption,
.terminal-heading {
  display: flex;
  justify-content: space-between;
  padding: 0.9rem 1rem;
  border-bottom: 1px solid var(--line-soft);
}

.record-sample pre,
.install-terminal pre {
  margin: 0;
  overflow-x: auto;
  color: var(--chalk);
  font-family: var(--mono);
  font-size: clamp(0.73rem, 1.2vw, 0.9rem);
  line-height: 1.72;
  tab-size: 2;
}

.record-sample pre {
  padding: clamp(1.4rem, 4vw, 3rem);
}

.record-sample > p {
  margin: 0;
  padding: 0.9rem 1rem;
  border-top: 1px solid var(--line-soft);
  color: var(--muted);
  font-size: 0.78rem;
}

.code-muted {
  color: var(--muted);
}

.code-key {
  color: var(--brass-pale);
}

.code-value {
  color: var(--paper);
}

.install-section {
  padding-block: clamp(6rem, 11vw, 10rem);
  background: var(--raised);
}

.install-grid {
  align-items: center;
}

.install-grid h2 {
  max-width: 10ch;
}

.install-terminal {
  border: 1px solid var(--line);
  background: var(--ink);
}

.terminal-heading {
  align-items: center;
}

.copy-button {
  padding: 0;
  border: 0;
  border-bottom: 1px solid var(--brass);
  background: transparent;
  color: var(--brass-pale);
  font-family: var(--body);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: normal;
  text-transform: none;
  cursor: pointer;
}

.copy-button:hover {
  color: var(--chalk);
}

.install-terminal pre {
  padding: clamp(1.4rem, 4vw, 2.5rem);
}

.copy-status {
  min-height: 1.5rem;
  margin: 0;
  padding: 0 1rem 0.6rem;
  color: var(--brass-pale);
  font-size: 0.8rem;
}

footer {
  padding-block: 3rem;
  border-top: 1px solid var(--line-soft);
}

.footer-inner {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 3rem;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.footer-brand p {
  max-width: 32ch;
  margin-bottom: 0;
  color: var(--muted);
  font-size: 0.88rem;
}

.footer-links {
  display: flex;
  gap: 1.5rem;
}

.footer-links a {
  color: var(--paper);
  font-size: 0.88rem;
}

@media (max-width: 68rem) {
  .header-inner {
    grid-template-columns: 1fr auto;
  }

  nav {
    display: none;
  }

  .hero-grid {
    grid-template-columns: minmax(0, 1fr) minmax(25rem, 0.85fr);
    gap: 4rem;
  }

  .hero-cut {
    left: 52%;
  }

  .action-sequence li {
    grid-template-columns: 5.5rem minmax(0, 1fr);
  }

  .action-sequence code {
    grid-column: 2;
    text-align: left;
  }
}

@media (max-width: 56rem) {
  :root {
    --shell: min(100% - 2rem, 44rem);
  }

  .hero {
    min-height: auto;
  }

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

  .hero-grid {
    min-height: auto;
    padding-block: 4rem 5rem;
    gap: 6rem;
  }

  .hero-cut {
    top: auto;
    bottom: 34rem;
    left: 0;
    width: 100%;
    height: 5rem;
    clip-path: polygon(0 0, 43% 0, 50% 68%, 57% 0, 100% 0, 100% 35%, 57% 35%, 50% 100%, 43% 35%, 0 35%);
  }

  .section-heading {
    position: static;
  }

  .section-grid,
  .record-grid,
  .install-grid {
    gap: 4rem;
  }

  .boundary-statement {
    grid-template-columns: 1fr;
    align-items: start;
  }

  .boundary-statement h2 {
    max-width: 12ch;
  }
}

@media (max-width: 40rem) {
  html {
    scroll-padding-top: 5rem;
  }

  h1 {
    font-size: clamp(3.75rem, 17.5vw, 5.25rem);
  }

  h2 {
    font-size: clamp(3rem, 14vw, 4.5rem);
  }

  .site-header {
    position: relative;
  }

  .header-inner {
    min-height: 4.5rem;
  }

  .source-link {
    font-size: 0.82rem;
  }

  .hero-actions {
    align-items: flex-start;
    flex-direction: column;
    justify-content: flex-start;
    margin-bottom: 3rem;
  }

  .hero-actions .button-primary,
  .hero-actions .text-link {
    order: initial;
  }

  .hero-actions .button-primary {
    transform: none;
  }

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

  .hero-facts div {
    padding: 0.8rem 0;
    border-bottom: 1px solid var(--line-soft);
  }

  .hero-facts div + div {
    padding-left: 0;
    border-left: 0;
  }

  .hero-cut {
    bottom: 32rem;
  }

  .run-cross-section figcaption {
    align-items: flex-start;
    flex-direction: column;
    gap: 0.25rem;
  }

  .run-rail {
    top: 5.9rem;
    bottom: 10.7rem;
    left: 1rem;
  }

  .run-stage {
    grid-template-columns: 2.25rem 1fr;
    padding-left: 2rem;
  }

  .stage-state {
    grid-column: 2;
    padding-right: 0;
  }

  .run-evidence > span,
  .run-evidence strong,
  .run-evidence p {
    padding-left: 2rem;
  }

  .action-sequence li {
    grid-template-columns: 1fr;
    gap: 0.6rem;
  }

  .action-sequence code {
    grid-column: 1;
  }

  .ledger-head {
    display: none;
  }

  .ledger-row {
    grid-template-columns: 1fr;
    gap: 0.55rem;
  }

  .ledger-label {
    display: block;
    position: static;
    width: auto;
    height: auto;
    margin-bottom: 0.2rem;
    overflow: visible;
    clip-path: none;
    color: #3b3010;
    font-family: var(--mono);
    font-size: 0.67rem;
    letter-spacing: 0.06em;
    white-space: normal;
    text-transform: uppercase;
  }

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

  .retention-contrast > div + div {
    margin-top: 1.5rem;
    padding-left: 0;
    border-top: 1px solid var(--line-soft);
    border-left: 0;
  }

  .footer-inner,
  .footer-brand,
  .footer-links {
    align-items: flex-start;
    flex-direction: column;
  }

  .footer-inner {
    gap: 2rem;
  }

  .footer-links {
    gap: 0.7rem;
  }
}

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

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}

@media (prefers-contrast: more) {
  :root {
    --muted: #cec5b5;
    --line: #958b78;
    --line-soft: #6f6657;
  }
}

.header-inner {
  display: flex;
  justify-content: space-between;
}

nav {
  display: flex;
  gap: 1.5rem;
}

.hero-grid {
  grid-template-columns: minmax(0, 0.95fr) minmax(21rem, 0.7fr);
  gap: clamp(4rem, 11vw, 10rem);
}

.hero-cut {
  left: 47%;
}

.hero-actions {
  justify-content: flex-start;
  margin-bottom: 0;
}

.hero-actions .text-link,
.hero-actions .button-primary {
  order: initial;
}

.hero-actions .button-primary {
  transform: none;
}

.run-summary {
  position: relative;
  z-index: 3;
  margin: 0;
  border-top: 1px solid var(--chalk);
  border-bottom: 1px solid var(--chalk);
}

.run-summary > p {
  margin: 0;
  padding: 0.9rem 0;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.run-summary ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

.run-summary li {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  padding: 1rem 0;
  gap: 1rem;
  border-top: 1px solid var(--line-soft);
}

.run-summary span {
  color: var(--brass-pale);
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
}

.run-summary strong {
  font-weight: 500;
  text-align: right;
}

@media (max-width: 56rem) {
  .hero-grid {
    grid-template-columns: 1fr;
  }

}

@media (max-width: 40rem) {
  .run-summary li {
    align-items: flex-start;
    flex-direction: column;
    gap: 0.25rem;
  }

  .run-summary strong {
    text-align: left;
  }
}