:root {
  color-scheme: light;
  --paper: #f1eee6;
  --paper-soft: #e6e1d6;
  --ink: #171715;
  --ink-soft: #4d4b45;
  --oxide: #b93622;
  --oxide-bright: #d34f32;
  --mint: #b8f5cf;
  --mint-ink: #123a25;
  --line: #aaa59a;
  --line-dark: #5e5a52;
  --white: #fffdf7;
  --font-display: Georgia, Cambria, "Times New Roman", serif;
  --font-body: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "Cascadia Mono", "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  --content: min(100% - 48px, 1240px);
  --section-space: clamp(88px, 11vw, 168px);
  --fast: 180ms;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.55;
  text-rendering: optimizeLegibility;
}

body::before {
  position: fixed;
  z-index: -1;
  inset: 0;
  background-image:
    linear-gradient(rgb(23 23 21 / 4%) 1px, transparent 1px),
    linear-gradient(90deg, rgb(23 23 21 / 3%) 1px, transparent 1px);
  background-size: 48px 48px;
  content: "";
  pointer-events: none;
}

a {
  color: inherit;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.22em;
}

a:hover {
  text-decoration-color: var(--oxide);
}

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

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

.skip-link {
  position: fixed;
  z-index: 20;
  top: 12px;
  left: 12px;
  padding: 12px 16px;
  transform: translateY(-160%);
  background: var(--ink);
  color: var(--white);
  font-weight: 700;
}

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

.site-header {
  display: flex;
  width: var(--content);
  min-height: 88px;
  margin: 0 auto;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--ink);
}

.wordmark {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  gap: 12px;
  font-size: 14px;
  font-weight: 750;
  letter-spacing: 0.01em;
  text-decoration: none;
}

.wordmark-mark {
  color: var(--oxide);
  font-family: var(--font-mono);
  font-weight: 800;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(18px, 3vw, 42px);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.site-nav a {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  text-decoration: none;
}

.hero,
.install-section,
.protocol-section,
.boundary-section,
.capabilities-section,
.closing-section,
.site-footer {
  width: var(--content);
  margin-inline: auto;
}

.hero {
  display: grid;
  min-height: min(810px, calc(100vh - 88px));
  padding-block: clamp(64px, 8vw, 112px);
  grid-template-columns: minmax(0, 1.12fr) minmax(380px, 0.88fr);
  align-items: center;
  gap: clamp(48px, 8vw, 120px);
}

.eyebrow,
.card-meta,
.section-index,
.kicker,
.layer-id,
.command-head,
.receipt-label,
.hash-line,
.release-note {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.eyebrow {
  display: flex;
  max-width: 670px;
  margin: 0 0 clamp(36px, 5vw, 72px);
  justify-content: space-between;
  gap: 24px;
  color: var(--ink-soft);
}

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

h1,
h2 {
  font-family: var(--font-display);
  font-weight: 400;
  letter-spacing: -0.045em;
}

h1 {
  max-width: 760px;
  margin-bottom: 32px;
  font-size: clamp(64px, 8.2vw, 124px);
  line-height: 0.87;
}

h1 em {
  color: var(--oxide);
  font-weight: 400;
}

h2 {
  max-width: 920px;
  margin-bottom: 24px;
  font-size: clamp(44px, 5.7vw, 82px);
  line-height: 0.96;
}

h3 {
  font-size: 24px;
  line-height: 1.15;
}

.hero-lede {
  max-width: 650px;
  margin-bottom: 36px;
  color: var(--ink-soft);
  font-size: clamp(18px, 1.6vw, 23px);
  line-height: 1.48;
}

.hero-actions,
.closing-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.button {
  display: inline-flex;
  min-height: 48px;
  padding: 12px 18px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--ink);
  font-weight: 720;
  text-decoration: none;
  transition: background-color var(--fast), color var(--fast), transform var(--fast);
}

.button:hover {
  transform: translateY(-2px);
}

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

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

.button-quiet:hover {
  background: var(--white);
}

.release-note {
  margin: 28px 0 0;
  color: var(--ink-soft);
  letter-spacing: 0.035em;
  text-transform: none;
}

.protocol-card {
  position: relative;
  padding: 24px 24px 20px;
  border: 1px solid var(--ink);
  background: var(--white);
  box-shadow: 14px 14px 0 var(--paper-soft), 15px 15px 0 var(--ink);
}

.protocol-card::before,
.protocol-card::after {
  position: absolute;
  width: 18px;
  height: 18px;
  border-color: var(--oxide);
  content: "";
}

.protocol-card::before {
  top: -7px;
  left: -7px;
  border-top: 2px solid;
  border-left: 2px solid;
}

.protocol-card::after {
  right: -7px;
  bottom: -7px;
  border-right: 2px solid;
  border-bottom: 2px solid;
}

.card-meta {
  display: flex;
  padding-bottom: 18px;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
}

.hash-spine {
  position: relative;
  margin: 0;
  padding: 22px 0 18px;
  list-style: none;
}

.hash-spine::before {
  position: absolute;
  top: 46px;
  bottom: 44px;
  left: 20px;
  width: 2px;
  background: var(--oxide);
  content: "";
}

.hash-spine li {
  position: relative;
  display: grid;
  min-height: 72px;
  grid-template-columns: 42px 1fr;
  grid-template-rows: auto auto;
  column-gap: 18px;
  align-content: center;
}

.spine-index {
  z-index: 1;
  display: grid;
  width: 42px;
  height: 42px;
  grid-row: 1 / 3;
  place-items: center;
  border: 1px solid var(--ink);
  background: var(--white);
  font-family: var(--font-mono);
  font-size: 11px;
}

.hash-spine li:first-child .spine-index,
.hash-spine li:last-child .spine-index {
  background: var(--mint);
}

.hash-spine strong {
  align-self: end;
  font-size: 15px;
}

.hash-spine small {
  align-self: start;
  color: var(--ink-soft);
}

.hash-line {
  display: grid;
  margin: 0;
  padding-top: 14px;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 14px;
  border-top: 1px solid var(--line);
}

.hash-line code {
  overflow-wrap: anywhere;
}

.verified {
  padding: 4px 7px;
  background: var(--mint);
  color: var(--mint-ink);
  font-weight: 700;
}

.install-section,
.protocol-section,
.boundary-section,
.capabilities-section,
.closing-section {
  padding-block: var(--section-space);
  border-top: 1px solid var(--ink);
}

.install-section {
  display: grid;
  grid-template-columns: minmax(130px, 0.28fr) minmax(0, 0.72fr);
  gap: 28px 48px;
}

.section-index {
  padding-top: 10px;
  color: var(--oxide);
}

.install-copy p:not(.kicker),
.section-heading p:not(.kicker),
.closing-section p:not(.kicker) {
  max-width: 700px;
  color: var(--ink-soft);
  font-size: 18px;
}

.kicker {
  margin-bottom: 18px;
  color: var(--oxide);
  font-weight: 720;
}

.command-shell {
  position: relative;
  grid-column: 2;
  min-width: 0;
  margin-top: 18px;
  border: 1px solid var(--ink);
  background: var(--ink);
  color: var(--white);
}

.command-head {
  display: flex;
  min-height: 42px;
  padding: 10px 14px;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  border-bottom: 1px solid var(--line-dark);
  color: #d3cec3;
}

.command-shell pre,
.receipt-json {
  max-width: 100%;
  margin: 0;
  overflow: auto;
  font-family: var(--font-mono);
  scrollbar-color: var(--oxide) var(--ink);
}

.command-shell pre {
  padding: clamp(26px, 4vw, 46px) 150px clamp(26px, 4vw, 46px) 24px;
  font-size: clamp(15px, 1.8vw, 22px);
  white-space: pre;
}

.copy-command {
  position: absolute;
  right: 16px;
  bottom: 18px;
  min-height: 44px;
  padding: 8px 12px;
  border: 1px solid #88847b;
  background: transparent;
  color: var(--white);
  cursor: pointer;
  font: 700 12px/1 var(--font-mono);
}

.copy-command:hover {
  border-color: var(--mint);
  color: var(--mint);
}

.noscript-note {
  padding: 0 24px 24px;
}

.apply-note {
  display: flex;
  grid-column: 2;
  align-items: center;
  gap: 14px;
  color: var(--ink-soft);
}

.apply-note p {
  margin: 0;
}

.boundary-mark {
  width: 28px;
  height: 1px;
  flex: 0 0 auto;
  background: var(--oxide);
}

.section-heading {
  display: grid;
  margin-bottom: clamp(48px, 7vw, 88px);
  grid-template-columns: minmax(130px, 0.28fr) minmax(0, 0.72fr);
  gap: 48px;
}

.walkthrough {
  display: grid;
  grid-template-columns: minmax(210px, 0.28fr) minmax(0, 0.72fr);
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
}

.route-tabs {
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--ink);
}

.route-tabs button {
  position: relative;
  display: grid;
  min-height: 76px;
  padding: 14px 20px;
  grid-template-columns: 36px 1fr;
  align-items: center;
  gap: 12px;
  border: 0;
  border-bottom: 1px solid var(--line);
  background: transparent;
  color: var(--ink);
  cursor: pointer;
  font: 700 14px/1.2 var(--font-body);
  text-align: left;
}

.route-tabs button:last-child {
  border-bottom: 0;
}

.route-tabs button::before {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 0;
  background: var(--oxide);
  content: "";
  transition: width var(--fast);
}

.route-tabs button[aria-selected="true"] {
  background: var(--white);
}

.route-tabs button[aria-selected="true"]::before {
  width: 5px;
}

.route-tabs button span {
  color: var(--oxide);
  font-family: var(--font-mono);
  font-size: 11px;
}

.receipt {
  min-width: 0;
  padding: clamp(26px, 4vw, 54px);
  background: var(--white);
}

.receipt-head {
  display: flex;
  margin-bottom: clamp(40px, 7vw, 84px);
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.receipt-head div {
  display: flex;
  align-items: center;
  gap: 9px;
}

.status-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--mint-ink);
  box-shadow: 0 0 0 4px var(--mint);
}

.receipt-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(180px, 0.7fr);
  gap: 48px;
}

.receipt-label {
  display: block;
  margin-bottom: 14px;
  color: var(--oxide);
}

.receipt-grid h3 {
  max-width: 520px;
  margin-bottom: 14px;
  font-family: var(--font-display);
  font-size: clamp(31px, 4vw, 54px);
  font-weight: 400;
  letter-spacing: -0.035em;
}

.receipt-grid p {
  max-width: 580px;
  color: var(--ink-soft);
}

.receipt-fields {
  margin: 0;
}

.receipt-fields div {
  padding: 12px 0;
  border-top: 1px solid var(--line);
}

.receipt-fields dt,
.receipt-fields dd {
  margin: 0;
  font-family: var(--font-mono);
  overflow-wrap: anywhere;
}

.receipt-fields dt {
  margin-bottom: 4px;
  color: var(--ink-soft);
  font-size: 10px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.receipt-fields dd {
  font-size: 12px;
}

.receipt-json {
  margin-top: 40px;
  padding: 18px;
  background: var(--ink);
  color: var(--mint);
  font-size: 12px;
}

.scope-cutaway {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(180px, 0.58fr) minmax(0, 0.9fr);
  align-items: stretch;
  border: 1px solid var(--ink);
}

.scope-layer {
  position: relative;
  min-width: 0;
  padding: clamp(28px, 4vw, 54px);
  border-right: 1px solid var(--ink);
}

.scope-layer:last-child {
  border-right: 0;
}

.scope-layer h3 {
  margin: 24px 0 18px;
  font-family: var(--font-display);
  font-size: clamp(30px, 3vw, 45px);
  font-weight: 400;
}

.scope-layer p:not(.layer-id) {
  color: var(--ink-soft);
}

.layer-public {
  background: var(--white);
}

.layer-boundary {
  background: var(--oxide);
  color: var(--white);
}

.layer-boundary p:not(.layer-id) {
  color: #fff4ed;
}

.layer-private {
  background: var(--paper-soft);
}

.layer-id {
  margin: 0;
}

.scope-list {
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.scope-list li {
  padding: 9px 0 9px 18px;
  border-top: 1px solid var(--line);
}

.scope-list li::before {
  margin-left: -18px;
  color: var(--oxide);
  content: "+";
  font-family: var(--font-mono);
}

.capability-ledger {
  border-top: 2px solid var(--ink);
  border-bottom: 1px solid var(--ink);
}

.ledger-row {
  display: grid;
  min-height: 76px;
  padding: 16px 12px;
  grid-template-columns: minmax(170px, 0.7fr) minmax(150px, 0.55fr) minmax(0, 1.75fr);
  align-items: center;
  gap: 24px;
  border-bottom: 1px solid var(--line);
}

.ledger-row:last-child {
  border-bottom: 0;
}

.ledger-head {
  min-height: 46px;
  color: var(--ink-soft);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.state {
  justify-self: start;
  padding: 5px 8px;
  border: 1px solid currentcolor;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.state-supported {
  background: var(--mint);
  color: var(--mint-ink);
}

.state-degraded {
  color: #6f2b1f;
}

.support-link {
  margin: 22px 0 0;
  color: var(--ink-soft);
}

.closing-section {
  display: grid;
  grid-template-columns: minmax(100px, 0.18fr) minmax(0, 0.57fr) minmax(220px, 0.25fr);
  align-items: end;
  gap: 40px;
}

.closing-mark {
  color: var(--oxide);
  font: 400 clamp(64px, 10vw, 148px)/0.8 var(--font-display);
}

.closing-section h2 {
  font-size: clamp(46px, 5vw, 72px);
}

.closing-actions {
  flex-direction: column;
  align-items: stretch;
}

.site-footer {
  display: flex;
  min-height: 112px;
  padding-block: 28px;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  border-top: 1px solid var(--ink);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.site-footer p {
  margin: 0;
}

.site-footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
}

@media (max-width: 980px) {
  :root {
    --content: min(100% - 40px, 900px);
  }

  .hero {
    min-height: auto;
    grid-template-columns: 1fr;
  }

  .hero-copy {
    max-width: 780px;
  }

  .protocol-card {
    width: min(100% - 16px, 680px);
    margin-left: auto;
  }

  .scope-cutaway {
    grid-template-columns: 1fr 1fr;
  }

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

  .route-tabs {
    display: grid;
    overflow-x: auto;
    grid-template-columns: repeat(5, minmax(118px, 1fr));
    border-right: 0;
    border-bottom: 1px solid var(--ink);
  }

  .route-tabs button {
    min-height: 72px;
    padding: 12px 10px;
    grid-template-columns: 1fr;
    gap: 5px;
    border-right: 1px solid var(--line);
    border-bottom: 0;
    text-align: center;
  }

  .route-tabs button::before {
    top: auto;
    right: 0;
    width: auto;
    height: 0;
    transition: height var(--fast);
  }

  .route-tabs button[aria-selected="true"]::before {
    width: auto;
    height: 5px;
  }

  .scope-layer {
    border-bottom: 1px solid var(--ink);
  }

  .layer-public {
    grid-column: 1 / 3;
    border-right: 0;
  }

  .layer-boundary {
    border-bottom: 0;
  }

  .layer-private {
    border-right: 0;
    border-bottom: 0;
  }

  .closing-section {
    grid-template-columns: 90px 1fr;
  }

  .closing-actions {
    grid-column: 2;
    flex-direction: row;
  }
}

@media (max-width: 720px) {
  :root {
    --content: min(100% - 28px, 680px);
    --section-space: 82px;
  }

  body::before {
    background-size: 32px 32px;
  }

  .site-header {
    min-height: 76px;
  }

  .site-nav a:not(:last-child) {
    display: none;
  }

  .hero {
    padding-block: 58px 90px;
    gap: 58px;
  }

  .eyebrow {
    margin-bottom: 38px;
  }

  h1 {
    font-size: clamp(58px, 19vw, 84px);
  }

  .hero-lede {
    font-size: 18px;
  }

  .protocol-card {
    width: calc(100% - 10px);
    padding: 18px;
    box-shadow: 9px 9px 0 var(--paper-soft), 10px 10px 0 var(--ink);
  }

  .hash-spine {
    display: grid;
    padding: 26px 0 18px;
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .hash-spine::before {
    top: 46px;
    right: 8%;
    bottom: auto;
    left: 8%;
    width: auto;
    height: 2px;
  }

  .hash-spine li {
    display: flex;
    min-height: 96px;
    align-items: center;
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }

  .hash-spine strong {
    font-size: 10px;
  }

  .hash-spine small {
    display: none;
  }

  .spine-index {
    width: 38px;
    height: 38px;
  }

  .hash-line {
    grid-template-columns: auto 1fr;
  }

  .verified {
    grid-column: 1 / 3;
    justify-self: start;
  }

  .install-section,
  .section-heading {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .command-shell,
  .apply-note {
    grid-column: 1;
  }

  .command-shell pre {
    padding: 28px 18px 88px;
    font-size: 15px;
  }

  .route-tabs {
    overflow-x: visible;
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .route-tabs button {
    min-width: 0;
    padding-inline: 2px;
    font-size: 10px;
  }

  .receipt {
    padding: 26px 18px;
  }

  .receipt-head {
    margin-bottom: 46px;
  }

  .receipt-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .scope-cutaway {
    grid-template-columns: 1fr;
  }

  .layer-public,
  .layer-boundary,
  .layer-private {
    grid-column: auto;
    border-right: 0;
    border-bottom: 1px solid var(--ink);
  }

  .layer-private {
    border-bottom: 0;
  }

  .ledger-head {
    display: none;
  }

  .ledger-row {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .closing-section {
    grid-template-columns: 1fr;
    align-items: start;
  }

  .closing-mark {
    font-size: 76px;
  }

  .closing-actions {
    grid-column: 1;
    flex-direction: row;
  }

  .site-footer {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 420px) {
  :root {
    --content: calc(100% - 24px);
  }

  .wordmark {
    gap: 8px;
    font-size: 13px;
  }

  .site-nav {
    font-size: 11px;
  }

  .hero-actions,
  .closing-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .button {
    width: 100%;
  }

  .card-meta,
  .command-head,
  .receipt-head {
    align-items: flex-start;
    flex-direction: column;
  }

  .command-head {
    justify-content: center;
  }

  .route-tabs button {
    min-width: 0;
  }

  .site-footer nav {
    flex-wrap: wrap;
    gap: 12px 20px;
  }
}

@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 (forced-colors: active) {
  .status-dot,
  .verified,
  .state,
  .layer-boundary {
    border: 1px solid CanvasText;
  }
}