@font-face {
  font-family: "Geologica";
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
  src: url("fonts/geologica-latin.woff2") format("woff2");
}

:root {
  color-scheme: light;
  --mill-black: #111514;
  --graphite: #1c2422;
  --graphite-raised: #26302d;
  --brand-light: #f3f5f1;
  --paper: #fbfcf9;
  --mineral: #f3f5f1;
  --ink: #151a18;
  --ink-body: #313a37;
  --ink-muted: #5b6662;
  --line: #d9dfda;
  --line-strong: #bac5be;
  --yellow: #f2c230;
  --yellow-deep: #d9a600;
  --teal: #2b7a78;
  --teal-deep: #174e4c;
  --teal-bright: #70c5bd;
  --coral: #d85f45;
  --code: #171d1b;
  --code-text: #edf2ed;
  --code-muted: #a8b3ae;
  --inline-code: #e8ece8;
  --scroll-thumb: #8d9993;
  --shell: 76rem;
  --reading: 48rem;
  --header-height: 4.5rem;
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scrollbar-color: var(--scroll-thumb) transparent;
  scrollbar-width: thin;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "Geologica", system-ui, sans-serif;
  font-size: 1rem;
  line-height: 1.7;
  text-rendering: optimizeLegibility;
}

a {
  color: var(--teal);
  text-decoration-color: color-mix(in srgb, var(--teal) 45%, transparent);
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.18em;
  transition: color 180ms ease-out, border-color 180ms ease-out, background-color 180ms ease-out;
}

a:hover {
  color: var(--teal-deep);
  text-decoration-color: currentColor;
}

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

img,
svg {
  max-width: 100%;
}

svg {
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2;
}

code,
pre,
.section-label,
.hero-label,
.artifact-meta,
.artifact-byline dt,
.stage-number {
  font-family: ui-monospace, SFMono-Regular, Consolas, "Liberation Mono", monospace;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1,
h2,
h3 {
  letter-spacing: 0;
  text-wrap: balance;
}

h1 {
  margin-bottom: 1rem;
  font-size: 6rem;
  font-weight: 780;
  line-height: 0.94;
}

h2 {
  margin-bottom: 1rem;
  font-size: 4rem;
  font-weight: 720;
  line-height: 1.02;
}

h3 {
  margin-bottom: 0.5rem;
  font-size: 1.35rem;
  font-weight: 680;
  line-height: 1.15;
}

p,
li {
  text-wrap: pretty;
}

.shell {
  width: min(calc(100% - 3rem), var(--shell));
  margin-inline: auto;
}

.reading-shell {
  max-width: var(--reading);
}

.icon-sprite {
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
}

.icon {
  width: 1.1rem;
  height: 1.1rem;
  flex: 0 0 auto;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 0.75rem;
  left: 0.75rem;
  padding: 0.6rem 0.9rem;
  background: var(--yellow);
  color: var(--mill-black);
  font-weight: 700;
  transform: translateY(-180%);
}

.skip-link:focus {
  color: var(--mill-black);
  transform: translateY(0);
}

.site-header {
  position: sticky;
  z-index: 20;
  top: 0;
  min-height: var(--header-height);
  border-bottom: 1px solid #33413d;
  background: rgba(17, 21, 20, 0.94);
  color: var(--brand-light);
  backdrop-filter: blur(12px);
}

.header-inner {
  min-height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  color: var(--brand-light);
  font-size: 1.03rem;
  font-weight: 730;
  text-decoration: none;
}

.brand:hover {
  color: var(--yellow);
}

.brand-mark {
  width: 2rem;
  height: 2rem;
  color: var(--yellow);
  stroke-width: 1.55;
}

.desktop-nav,
.desktop-nav a,
.external-link,
.footer-inner nav,
.footer-inner nav a {
  display: flex;
  align-items: center;
}

.desktop-nav {
  gap: 1.6rem;
}

.desktop-nav a,
.mobile-nav a {
  color: #cad2ce;
  font-size: 0.87rem;
  font-weight: 590;
  text-decoration: none;
}

.desktop-nav a:hover,
.mobile-nav a:hover {
  color: var(--yellow);
}

.external-link {
  gap: 0.3rem;
}

.mobile-nav {
  display: none;
  position: relative;
}

.mobile-nav summary {
  width: 2.75rem;
  height: 2.75rem;
  display: grid;
  place-items: center;
  color: var(--brand-light);
  cursor: pointer;
  list-style: none;
}

.mobile-nav summary::-webkit-details-marker {
  display: none;
}

.mobile-nav nav {
  position: absolute;
  top: 3rem;
  right: 0;
  width: 14rem;
  display: grid;
  gap: 0.15rem;
  padding: 0.65rem;
  border: 1px solid #3b4945;
  border-radius: 8px;
  background: var(--graphite);
  box-shadow: 0 6px 8px rgba(0, 0, 0, 0.22);
}

.mobile-nav nav a {
  min-height: 2.75rem;
  padding: 0.65rem 0.75rem;
}

.section-label,
.hero-label {
  margin-bottom: 1rem;
  color: var(--teal);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

.hero {
  position: relative;
  height: calc(100svh - 8rem);
  min-height: 39rem;
  max-height: 50rem;
  overflow: hidden;
  background: var(--mill-black);
  color: var(--brand-light);
  isolation: isolate;
}

.hero-media,
.hero-media img,
.hero-shade {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero-media {
  z-index: -2;
  overflow: hidden;
}

.hero-media img {
  object-fit: cover;
  object-position: center;
  animation: hero-material 1200ms var(--ease-out) both;
}

.hero-shade {
  z-index: -1;
  background: linear-gradient(90deg, rgba(8, 11, 10, 0.97) 0%, rgba(8, 11, 10, 0.88) 36%, rgba(8, 11, 10, 0.22) 68%, rgba(8, 11, 10, 0.08) 100%);
}

.hero-inner {
  height: 100%;
  padding-block: 3rem 2rem;
  display: grid;
  grid-template-rows: minmax(0, 1fr) auto;
  align-items: center;
}

.hero-copy {
  width: min(44rem, 58%);
  align-self: center;
  animation: hero-copy 800ms 120ms var(--ease-out) both;
}

.hero-label {
  color: var(--yellow);
}

.hero h1 {
  color: var(--brand-light);
}

.hero-statement {
  margin-bottom: 1.25rem;
  color: #d6ddda;
  font-size: 2.25rem;
  font-weight: 470;
  line-height: 1.15;
  text-wrap: balance;
}

.hero-statement strong {
  color: var(--yellow);
  font-weight: 710;
}

.lede {
  max-width: 44rem;
  margin-bottom: 0;
  color: var(--ink-muted);
  font-size: 1.1rem;
}

.hero .lede {
  max-width: 42rem;
  color: #c4ceca;
}

.actions {
  margin-top: 2rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.button {
  min-height: 2.9rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  padding: 0.72rem 1.15rem;
  border: 1px solid transparent;
  border-radius: 4px;
  font-size: 0.9rem;
  font-weight: 700;
  text-decoration: none;
}

.button .icon,
.text-link .icon,
.output-link .icon {
  transition: transform 220ms var(--ease-out);
}

.button:hover .icon,
.text-link:hover .icon,
.output-link:hover .icon {
  transform: translateX(0.2rem);
}

.button.primary {
  background: var(--yellow);
  color: var(--mill-black);
}

.button.primary:hover {
  background: #ffda53;
  color: var(--mill-black);
}

.button.secondary {
  border-color: #65716c;
  background: rgba(17, 21, 20, 0.58);
  color: var(--brand-light);
}

.button.secondary:hover {
  border-color: var(--brand-light);
  color: var(--brand-light);
}

.command-line {
  width: min(100%, 48rem);
  min-width: 0;
  display: flex;
  align-items: flex-start;
  gap: 0.8rem;
  padding: 0.9rem 1rem;
  border-top: 1px solid #53605b;
  background: rgba(10, 13, 12, 0.76);
  color: var(--code-text);
  font-size: 0.82rem;
  line-height: 1.5;
  backdrop-filter: blur(8px);
  animation: hero-copy 800ms 260ms var(--ease-out) both;
}

.command-line .icon {
  margin-top: 0.08rem;
  color: var(--yellow);
}

.command-line code {
  min-width: 0;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.transformation,
.outputs {
  padding-block: 6rem;
  background: var(--mineral);
}

.section-heading {
  margin-bottom: 3rem;
}

.split-heading {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(18rem, 0.65fr);
  align-items: end;
  gap: 4rem;
}

.split-heading > p,
.proof-grid p:not(.section-label),
.closing p {
  color: var(--ink-muted);
  font-size: 1.04rem;
}

.workflow-steps {
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-block: 1px solid var(--line-strong);
  list-style: none;
}

.workflow-steps li {
  position: relative;
  min-height: 18rem;
  padding: 2rem 2rem 2rem 0;
  display: flex;
  flex-direction: column;
}

.workflow-steps li + li {
  padding-left: 2rem;
  border-left: 1px solid var(--line-strong);
}

.workflow-steps li:nth-child(2) {
  background: color-mix(in srgb, var(--yellow) 12%, transparent);
}

.stage-icon {
  width: 2.25rem;
  height: 2.25rem;
  margin-bottom: 3rem;
  color: var(--teal);
  stroke-width: 1.6;
}

.workflow-steps li:nth-child(2) .stage-icon {
  color: var(--yellow-deep);
}

.workflow-steps li:nth-child(3) .stage-icon {
  color: var(--coral);
}

.stage-number {
  position: absolute;
  top: 2rem;
  right: 2rem;
  color: var(--ink-muted);
  font-size: 0.74rem;
}

.workflow-steps h3 {
  font-size: 1.8rem;
}

.workflow-steps p {
  max-width: 22rem;
  margin: auto 0 0;
  color: var(--ink-muted);
}

.ledger-proof {
  padding-block: 7rem;
  background: var(--teal-deep);
  color: var(--brand-light);
}

.ledger-proof .section-label,
.ledger-proof h2 {
  color: var(--yellow);
}

.ledger-proof .proof-grid p:not(.section-label) {
  color: #c7dbd7;
}

.proof-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(28rem, 1.2fr);
  align-items: center;
  gap: 6rem;
}

.entry-sample {
  margin: 0;
  padding: 2rem;
  border-radius: 8px;
  background: var(--code);
  color: var(--code-text);
  font-size: 0.88rem;
  line-height: 1.65;
  overflow-x: auto;
}

.entry-sample span {
  color: var(--yellow);
}

.outputs {
  background: var(--paper);
}

.collection-group + .collection-group {
  margin-top: 4rem;
}

.group-heading {
  margin-bottom: 1rem;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 2rem;
}

.group-heading h3 {
  margin: 0;
  font-size: 1rem;
  color: var(--ink-muted);
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.86rem;
  font-weight: 680;
}

.output-list {
  border-top: 1px solid var(--line-strong);
}

.output-list article {
  border-bottom: 1px solid var(--line);
}

.output-link {
  min-height: 9rem;
  display: grid;
  grid-template-columns: 11rem minmax(0, 1fr) minmax(15rem, 0.65fr) auto;
  align-items: center;
  gap: 2rem;
  padding: 1.5rem 0;
  color: var(--ink);
  text-decoration: none;
}

.output-link:hover {
  color: var(--teal-deep);
}

.output-link h3,
.output-link p {
  margin: 0;
}

.output-link p:not(.artifact-meta) {
  color: var(--ink-muted);
  font-size: 0.9rem;
}

.artifact-meta {
  display: block;
  color: var(--ink-muted);
  font-size: 0.73rem;
  line-height: 1.5;
  text-transform: uppercase;
}

.output-link > .icon {
  color: var(--coral);
}

.closing {
  padding-block: 7rem;
  background: var(--graphite);
  color: var(--brand-light);
}

.closing .section-label,
.closing h2 {
  color: var(--yellow);
}

.closing p {
  color: #c4ceca;
}

.closing .button {
  margin-top: 1.1rem;
}

.page-heading {
  padding-block: 5rem 4rem;
  background: var(--graphite);
  color: var(--brand-light);
}

.page-heading .section-label {
  color: var(--yellow);
}

.page-heading h1,
.artifact-heading h1 {
  font-size: 4.5rem;
  overflow-wrap: anywhere;
}

.page-heading .lede {
  color: #c4ceca;
}

.collection {
  padding-block: 4rem 7rem;
}

.artifact-list {
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line-strong);
  list-style: none;
}

.artifact-list li {
  border-bottom: 1px solid var(--line);
}

.artifact-list a {
  position: relative;
  min-height: 9rem;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 0.45rem 2rem;
  align-content: center;
  padding: 1.4rem 3rem 1.4rem 0;
  color: var(--ink);
  text-decoration: none;
}

.artifact-list a:hover .artifact-title {
  color: var(--teal);
}

.artifact-title {
  min-width: 0;
  font-size: 1.25rem;
  font-weight: 680;
  overflow-wrap: anywhere;
}

.artifact-summary {
  grid-column: 1 / -1;
  color: var(--ink-muted);
  font-size: 0.92rem;
}

.artifact-arrow {
  position: absolute;
  top: 50%;
  right: 0;
  color: var(--coral);
  transform: translateY(-50%);
  transition: transform 220ms var(--ease-out);
}

.artifact-list a:hover .artifact-arrow {
  transform: translate(0.25rem, -50%);
}

.artifact {
  padding-block: 3rem 8rem;
}

.artifact-heading {
  padding-bottom: 2.75rem;
  border-bottom: 1px solid var(--line-strong);
}

.artifact-heading .section-label {
  margin-bottom: 1rem;
  color: var(--coral);
}

.back-link {
  margin-bottom: 3rem;
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.88rem;
  font-weight: 680;
  text-decoration: none;
}

.artifact-byline {
  margin: 1.5rem 0 0;
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 1rem 2rem;
}

.artifact-byline div {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
}

.artifact-byline dt {
  color: var(--ink-muted);
  font-size: 0.73rem;
  font-weight: 700;
  text-transform: uppercase;
}

.artifact-byline dd {
  margin: 0;
}

.artifact-heading > .lede {
  margin-top: 1.5rem;
}

.prose {
  padding-top: 3rem;
  overflow-wrap: anywhere;
}

.prose h1 {
  font-size: 2.4rem;
}

.prose h2 {
  margin-top: 3.5rem;
  font-size: 2rem;
}

.prose h3 {
  margin-top: 2.4rem;
  font-size: 1.35rem;
}

.prose p,
.prose li {
  color: var(--ink-body);
}

.prose blockquote {
  margin: 2rem 0;
  padding: 1rem 1.25rem;
  background: var(--mineral);
  color: var(--ink-body);
}

.prose :not(pre) > code {
  padding: 0.1em 0.32em;
  border-radius: 3px;
  background: var(--inline-code);
  font-size: 0.9em;
}

.prose pre {
  width: 100%;
  max-width: 100%;
  margin: 2rem 0;
  padding: 1.3rem;
  border-radius: 8px;
  background: var(--code);
  color: var(--code-text);
  overflow-x: auto;
}

.prose table {
  width: 100%;
  display: block;
  margin: 2rem 0;
  border-collapse: collapse;
  overflow-x: auto;
}

.prose th,
.prose td {
  min-width: 8rem;
  padding: 0.7rem;
  border: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.site-footer {
  border-top: 1px solid #33413d;
  background: var(--mill-black);
  color: #c4ceca;
}

.footer-inner {
  min-height: 12rem;
  padding-block: 2.5rem;
  display: grid;
  grid-template-columns: minmax(18rem, 1fr) auto auto;
  align-items: center;
  gap: 3rem;
  font-size: 0.84rem;
}

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

.footer-brand p,
.footer-license {
  margin: 0;
}

.footer-brand strong {
  color: var(--brand-light);
}

.footer-inner nav {
  gap: 1.25rem;
}

.footer-inner nav a {
  color: #c4ceca;
  text-decoration: none;
}

.footer-inner nav a:hover {
  color: var(--yellow);
}

.footer-license {
  color: #929e99;
}

@keyframes hero-material {
  from { transform: scale(1.035); clip-path: inset(0 0 0 8%); }
  to { transform: scale(1); clip-path: inset(0); }
}

@keyframes hero-copy {
  from { transform: translateY(1rem); }
  to { transform: translateY(0); }
}

@keyframes reading-progress {
  from { transform: scaleX(0); }
  to { transform: scaleX(1); }
}

@supports (animation-timeline: scroll()) {
  .artifact-page::before {
    content: "";
    position: fixed;
    z-index: 30;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--yellow);
    transform-origin: left;
    animation: reading-progress linear;
    animation-timeline: scroll();
  }
}

@media (max-width: 64rem) {
  h1 {
    font-size: 4.75rem;
  }

  h2 {
    font-size: 3.25rem;
  }

  .hero-copy {
    width: min(42rem, 68%);
  }

  .hero-statement {
    font-size: 1.9rem;
  }

  .proof-grid {
    gap: 3.5rem;
  }

  .output-link {
    grid-template-columns: 9rem minmax(0, 1fr) auto;
  }

  .output-link p:not(.artifact-meta) {
    display: none;
  }
}

@media (max-width: 48rem) {
  :root {
    --header-height: 4.15rem;
  }

  .shell {
    width: min(calc(100% - 2rem), var(--shell));
  }

  .desktop-nav {
    display: none;
  }

  .mobile-nav {
    display: block;
  }

  h1 {
    font-size: 3.5rem;
  }

  h2 {
    font-size: 2.5rem;
  }

  .hero {
    height: calc(100svh - 6.5rem);
    min-height: 36rem;
    max-height: 46rem;
  }

  .hero-media img {
    object-position: 64% center;
  }

  .hero-shade {
    background: linear-gradient(90deg, rgba(8, 11, 10, 0.96) 0%, rgba(8, 11, 10, 0.82) 68%, rgba(8, 11, 10, 0.26) 100%);
  }

  .hero-inner {
    padding-block: 2rem 1rem;
  }

  .hero-copy {
    width: 100%;
  }

  .hero-statement {
    font-size: 1.55rem;
  }

  .hero .lede {
    max-width: 33rem;
    font-size: 0.96rem;
  }

  .actions {
    margin-top: 1.4rem;
  }

  .command-line {
    font-size: 0.72rem;
  }

  .transformation,
  .outputs,
  .ledger-proof,
  .closing {
    padding-block: 4.5rem;
  }

  .split-heading,
  .proof-grid,
  .workflow-steps {
    grid-template-columns: 1fr;
  }

  .split-heading {
    gap: 1rem;
  }

  .workflow-steps li,
  .workflow-steps li + li {
    min-height: 13rem;
    padding: 1.5rem 0;
    border-left: 0;
  }

  .workflow-steps li + li {
    border-top: 1px solid var(--line-strong);
  }

  .workflow-steps li:nth-child(2) {
    margin-inline: -1rem;
    padding-inline: 1rem;
  }

  .stage-icon {
    margin-bottom: 1.5rem;
  }

  .stage-number {
    top: 1.5rem;
    right: 0;
  }

  .workflow-steps p {
    margin-top: 1.5rem;
  }

  .proof-grid {
    gap: 2.5rem;
  }

  .entry-sample {
    padding: 1.25rem;
    font-size: 0.75rem;
  }

  .output-link {
    min-height: 8rem;
    grid-template-columns: 1fr auto;
    gap: 0.5rem 1rem;
  }

  .output-link .artifact-meta {
    grid-column: 1 / -1;
  }

  .page-heading {
    padding-block: 3.5rem 3rem;
  }

  .page-heading h1,
  .artifact-heading h1 {
    font-size: 3rem;
  }

  .collection {
    padding-block: 3rem 5rem;
  }

  .artifact-list a {
    grid-template-columns: 1fr;
  }

  .artifact-byline {
    display: grid;
  }

  .artifact {
    padding-block: 2rem 5rem;
  }

  .footer-inner {
    grid-template-columns: 1fr;
    align-items: start;
    gap: 1.5rem;
  }

  .footer-inner nav {
    flex-wrap: wrap;
  }
}

@media (max-width: 30rem) {
  .hero {
    min-height: 40rem;
  }

  h1 {
    font-size: 3rem;
  }

  h2 {
    font-size: 2.15rem;
  }

  .hero-statement {
    font-size: 1.35rem;
  }

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

  .button {
    width: 100%;
  }

  .command-line {
    padding-inline: 0.75rem;
  }
}

@media (max-height: 42rem) and (min-width: 49rem) {
  .hero {
    min-height: 31rem;
  }

  .hero-inner {
    padding-block: 1.5rem 1rem;
  }

  .hero h1 {
    font-size: 4rem;
  }

  .hero-statement {
    font-size: 1.55rem;
  }

  .actions {
    margin-top: 1rem;
  }
}

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

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

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --paper: #171c1a;
    --mineral: #202724;
    --ink: #f1f4f0;
    --ink-body: #d3dad6;
    --ink-muted: #aeb9b3;
    --line: #35403c;
    --line-strong: #52605a;
    --teal: #70c5bd;
    --teal-deep: #85d7cf;
    --inline-code: #29322f;
    --scroll-thumb: #66736d;
  }

  .ledger-proof {
    background: #123f3e;
  }

  .page-heading,
  .closing {
    background: #111614;
  }

  .workflow-steps li:nth-child(2) {
    background: color-mix(in srgb, var(--yellow) 8%, transparent);
  }

  .prose blockquote {
    background: #202724;
  }
}