:root {
  color-scheme: light dark;
  --page: #f1f3f1;
  --surface: #fbfcf9;
  --surface-soft: #e9ede9;
  --surface-strong: #dce1dc;
  --text: #171a1d;
  --text-soft: #5c6462;
  --line: #c7cec8;
  --line-strong: #a7b1aa;
  --accent: #174cff;
  --accent-strong: #0639e6;
  --accent-soft: #dbe4ff;
  --accent-on: #ffffff;
  --shadow: rgba(30, 40, 36, 0.08);
  --panel-shadow: 0 18px 56px var(--shadow);
  --radius: 2px;
  --content: min(1280px, calc(100% - 48px));
  --serif: Georgia, "Songti SC", "STSong", "SimSun", serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-synthesis: none;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

section[id] {
  scroll-margin-top: 88px;
}

body {
  position: relative;
  margin: 0;
  min-height: 100dvh;
  background: var(--page);
  color: var(--text);
  line-height: 1.6;
}

body::before {
  content: "";
  position: fixed;
  z-index: 100;
  inset: 0;
  pointer-events: none;
  background-image:
    repeating-linear-gradient(0deg, rgba(18, 28, 24, 0.035) 0, rgba(18, 28, 24, 0.035) 1px, transparent 1px, transparent 4px),
    repeating-linear-gradient(90deg, rgba(18, 28, 24, 0.018) 0, rgba(18, 28, 24, 0.018) 1px, transparent 1px, transparent 7px);
  opacity: 0.14;
}

a {
  color: inherit;
  text-decoration: none;
}

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

button {
  font: inherit;
}

button:active,
.button:active,
.nav-github:active {
  transform: scale(0.98);
}

:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--accent) 68%, transparent);
  outline-offset: 3px;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 100;
  padding: 10px 14px;
  border-radius: var(--radius);
  background: var(--text);
  color: var(--page);
  transform: translateY(-160%);
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid color-mix(in srgb, var(--line) 72%, transparent);
  background: color-mix(in srgb, var(--page) 88%, transparent);
  backdrop-filter: blur(20px) saturate(140%);
  -webkit-backdrop-filter: blur(20px) saturate(140%);
}

.nav-shell {
  width: var(--content);
  height: 68px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 28px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  width: max-content;
  font-weight: 720;
  letter-spacing: 0;
}

.brand-mark {
  display: grid;
  width: 30px;
  height: 30px;
  place-items: center;
  border-radius: 6px;
  background: var(--accent);
  color: #ffffff;
  font-size: 15px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 26px;
  color: var(--text-soft);
  font-size: 14px;
}

.nav-links a,
.text-link,
.site-footer a {
  transition: color 160ms ease-out;
}

.nav-links a:hover,
.text-link:hover,
.site-footer a:hover {
  color: var(--accent);
}

.nav-github {
  justify-self: end;
  padding: 8px 13px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 650;
  transition: border-color 160ms ease-out, transform 100ms ease-out;
}

.nav-github:hover {
  border-color: var(--accent);
}

.section-shell {
  width: var(--content);
  margin: 0 auto;
}

.hero {
  width: var(--content);
  min-height: calc(100dvh - 68px);
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(420px, 0.78fr) minmax(650px, 1.22fr);
  align-items: center;
  gap: 56px;
  padding: 48px 0 44px;
}

.hero-copy {
  max-width: 620px;
}

.kicker,
.panel-label {
  margin: 0 0 18px;
  color: var(--accent);
  font-size: 12px;
  font-weight: 760;
  font-family: var(--mono);
  letter-spacing: 0;
  text-transform: uppercase;
}

.zine-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 7px 18px;
  margin-bottom: 54px;
  padding: 9px 0;
  border-block: 1px solid var(--line-strong);
  color: var(--text-soft);
  font-family: var(--mono);
  font-size: 10px;
  line-height: 1.3;
}

.zine-meta span + span {
  padding-left: 18px;
  border-left: 1px solid var(--line);
}

.hero h1 {
  margin: 0;
  font-size: 58px;
  font-family: var(--serif);
  font-weight: 600;
  letter-spacing: 0;
  line-height: 1.08;
}

.hero h1 span {
  display: block;
  white-space: nowrap;
}

.hero-summary {
  max-width: 28rem;
  margin: 26px 0 0;
  color: var(--text-soft);
  font-size: 18px;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: 12px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  padding: 0 18px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 700;
  white-space: nowrap;
  transition: background 160ms ease-out, border-color 160ms ease-out, transform 100ms ease-out;
}

.button-primary {
  background: var(--accent);
  color: #ffffff;
}

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

.button-secondary {
  border-color: var(--line-strong);
  background: var(--surface);
}

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

.hero-proof {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  max-width: 470px;
  margin: 54px 0 0;
  padding: 20px 0 0;
  border-top: 1px solid var(--line);
}

.hero-proof div {
  display: grid;
  gap: 2px;
}

.hero-proof dt {
  font-family: var(--mono);
  font-size: 25px;
  font-weight: 760;
  line-height: 1;
}

.hero-proof dd {
  margin: 0;
  color: var(--text-soft);
  font-size: 12px;
}

.ontology-panel {
  position: relative;
  min-width: 0;
  padding: 24px;
  border: 1px solid color-mix(in srgb, var(--line-strong) 70%, transparent);
  border-radius: var(--radius);
  background: color-mix(in srgb, var(--surface) 92%, transparent);
  box-shadow: var(--panel-shadow);
}

.ontology-panel::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 24px;
  width: 78px;
  height: 3px;
  background: var(--accent);
}

.ontology-heading-row {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 24px;
}

.ontology-heading-row .panel-label {
  margin-bottom: 4px;
}

.ontology-heading-row h2 {
  margin: 0;
  font-size: 24px;
  font-family: var(--serif);
  font-weight: 600;
  line-height: 1.2;
}

.graph-status {
  margin: 2px 0 0;
  color: var(--text-soft);
  font-size: 12px;
  font-family: var(--mono);
  white-space: nowrap;
}

.ontology-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 24px;
}

.ontology-filters button {
  min-width: 58px;
  min-height: 34px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: transparent;
  color: var(--text-soft);
  cursor: pointer;
  font-size: 12px;
  font-weight: 650;
  transition: background 160ms ease-out, border-color 160ms ease-out, color 160ms ease-out, transform 100ms ease-out;
}

.ontology-filters button:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.ontology-filters button[aria-pressed="true"] {
  border-color: var(--accent);
  background: var(--accent);
  color: #ffffff;
}

.ontology-visual {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
  margin-top: 18px;
}

.graph-scroll {
  width: 100%;
  min-width: 0;
  overflow: hidden;
  border-radius: var(--radius);
}

#ontology-graph {
  display: block;
  width: 100%;
  min-height: 0;
  aspect-ratio: 760 / 430;
  border-radius: var(--radius);
  background: color-mix(in srgb, var(--surface-soft) 72%, transparent);
}

.graph-edge {
  stroke: var(--accent);
  stroke-width: 1.6;
  opacity: 0.42;
  vector-effect: non-scaling-stroke;
}

.graph-lane-label {
  fill: var(--text-soft);
  font-size: 11px;
  font-weight: 650;
  pointer-events: none;
  text-anchor: middle;
}

.graph-node {
  cursor: pointer;
  outline: none;
}

.graph-node rect {
  fill: var(--surface);
  stroke: var(--line);
  stroke-width: 1.5;
  transition: fill 160ms ease-out, stroke 160ms ease-out, transform 160ms ease-out;
  transform-box: fill-box;
  transform-origin: center;
}

.graph-node:hover rect,
.graph-node:focus rect {
  stroke: var(--accent);
  transform: scale(1.025);
}

.graph-node.is-related rect {
  fill: var(--accent-soft);
  stroke: color-mix(in srgb, var(--accent) 62%, var(--line));
}

.graph-node.is-selected rect {
  fill: var(--accent);
  stroke: var(--accent);
}

.graph-node text {
  fill: var(--text);
  font-size: 13px;
  font-weight: 700;
  pointer-events: none;
  text-anchor: middle;
}

.graph-node.is-selected text {
  fill: #ffffff;
}

.ontology-detail {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(260px, 0.95fr);
  gap: 28px;
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.ontology-detail .detail-type {
  margin: 0 0 8px;
  color: var(--accent);
  font-size: 11px;
  font-weight: 760;
}

.ontology-detail h3 {
  margin: 0;
  font-size: 19px;
  line-height: 1.35;
}

.ontology-detail p {
  margin: 12px 0 0;
  color: var(--text-soft);
  font-size: 13px;
}

.ontology-detail .detail-source {
  margin-top: 10px;
  font-size: 11px;
}

.detail-relations {
  min-width: 0;
}

.detail-relations h4 {
  margin: 0 0 8px;
  color: var(--text-soft);
  font-size: 11px;
  font-weight: 700;
}

.detail-relations ul {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 6px 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.detail-relations li {
  display: grid;
  grid-template-columns: 18px minmax(0, 1fr);
  align-items: baseline;
  min-width: 0;
  padding-top: 6px;
  border-top: 1px solid var(--line);
}

.detail-relations li span {
  color: var(--accent);
  font-size: 12px;
  font-weight: 700;
}

.detail-relations li p {
  margin: 0;
  overflow-wrap: anywhere;
  font-size: 11px;
  line-height: 1.45;
}

.evidence-band {
  border-block: 1px solid var(--line);
  background: var(--surface);
}

.evidence-shell {
  display: grid;
  grid-template-columns: minmax(320px, 1.15fr) minmax(360px, 1fr) auto;
  gap: clamp(32px, 5vw, 76px);
  align-items: center;
  padding: 44px 0;
}

.evidence-copy .panel-label {
  margin-bottom: 6px;
}

.evidence-copy h2 {
  margin: 0;
  font-size: 30px;
  font-family: var(--serif);
  font-weight: 600;
  line-height: 1.24;
}

.evidence-copy > p:last-child {
  max-width: 54ch;
  margin: 10px 0 0;
  color: var(--text-soft);
  font-size: 13px;
}

.evidence-metrics {
  display: grid;
  grid-template-columns: repeat(4, minmax(64px, 1fr));
  margin: 0;
}

.evidence-metrics div {
  padding: 0 16px;
  border-left: 1px solid var(--line);
}

.evidence-metrics dt {
  font-size: 23px;
  font-family: var(--mono);
  font-weight: 760;
  line-height: 1.1;
}

.evidence-metrics dd {
  margin: 5px 0 0;
  color: var(--text-soft);
  font-size: 11px;
  white-space: nowrap;
}

.evidence-links {
  display: grid;
  gap: 7px;
  color: var(--accent);
  font-size: 12px;
  font-weight: 700;
  white-space: nowrap;
}

.evidence-links a:hover {
  color: var(--accent-strong);
}

.market {
  padding: 108px 0 96px;
}

.market-heading {
  display: grid;
  grid-template-columns: minmax(320px, 0.9fr) minmax(360px, 1.1fr);
  gap: clamp(42px, 8vw, 128px);
  align-items: end;
}

.market-heading h2 {
  margin: 0;
  font-family: var(--serif);
  font-size: 46px;
  font-weight: 600;
  line-height: 1.18;
}

.market-heading > p {
  max-width: 58ch;
  margin: 0;
  color: var(--text-soft);
  font-size: 15px;
}

.market-ledger {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: 64px;
  border-block: 1px solid var(--line-strong);
}

.market-ledger article {
  min-height: 190px;
  padding: 26px 28px 28px 0;
  border-right: 1px solid var(--line);
}

.market-ledger article + article {
  padding-left: 28px;
}

.market-ledger article:last-child {
  border-right: 0;
}

.market-ledger p {
  margin: 0;
  color: var(--accent);
  font-size: 11px;
  font-weight: 760;
}

.market-ledger h3 {
  margin: 38px 0 10px;
  font-family: var(--mono);
  font-size: 25px;
  letter-spacing: 0;
}

.market-ledger span {
  color: var(--text-soft);
  font-size: 12px;
}

.market-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 28px;
  margin-top: 24px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 700;
}

.definition {
  padding: 128px 0 112px;
}

.definition-statement {
  display: grid;
  grid-template-columns: minmax(220px, 0.55fr) minmax(0, 1.45fr);
  gap: clamp(40px, 8vw, 140px);
  align-items: start;
}

.definition-statement p {
  margin: 8px 0 0;
  color: var(--text-soft);
  font-size: 15px;
}

.definition-lead > p:last-child {
  margin: 12px 0 0;
}

.section-index {
  margin: 0 0 16px;
  color: var(--accent);
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
  line-height: 1.3;
}

.definition-statement .section-index,
.section-intro .section-index,
.operating-copy .section-index,
.install-copy .section-index,
.source-note .section-index {
  margin: 0 0 16px;
  color: var(--accent);
  font-size: 11px;
}

.definition-statement h2 {
  max-width: 18ch;
  margin: 0;
  font-size: 54px;
  font-family: var(--serif);
  font-weight: 600;
  line-height: 1.18;
  letter-spacing: 0;
}

.definition-statement h2 span {
  display: block;
}

.definition-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin-top: 82px;
  border-top: 1px solid var(--line-strong);
}

.definition-grid article {
  min-height: 220px;
  padding: 24px 24px 28px 0;
  border-right: 1px solid var(--line);
}

.definition-grid article + article {
  padding-left: 24px;
}

.definition-grid article:last-child {
  border-right: 0;
}

.definition-grid span {
  color: var(--text-soft);
  font-size: 12px;
}

.definition-grid h3 {
  margin: 52px 0 10px;
  font-size: 22px;
}

.definition-grid p {
  margin: 0;
  color: var(--text-soft);
  font-size: 14px;
}

.lifecycle {
  padding: 116px 0 128px;
  background: var(--surface);
  border-block: 1px solid var(--line);
}

.section-intro {
  max-width: 760px;
}

.section-intro h2,
.operating-copy h2,
.install-copy h2 {
  margin: 0;
  font-size: 46px;
  font-family: var(--serif);
  font-weight: 600;
  line-height: 1.18;
  letter-spacing: 0;
}

.section-intro p,
.operating-copy p,
.install-copy p {
  max-width: 62ch;
  margin: 20px 0 0;
  color: var(--text-soft);
  font-size: 16px;
}

.stage-track {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  margin: 72px 0 0;
  padding: 0;
  border-top: 2px solid var(--accent);
  list-style: none;
  counter-reset: delivery-stage;
}

.stage-track li {
  min-height: 260px;
  padding: 24px 18px 20px 0;
  border-right: 1px solid var(--line);
  counter-increment: delivery-stage;
}

.stage-track li::before {
  content: "0" counter(delivery-stage);
  display: block;
  margin-bottom: 18px;
  color: var(--accent);
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
}

.stage-track li + li {
  padding-left: 18px;
}

.stage-track li:last-child {
  border-right: 0;
}

.stage-track h3 {
  margin: 0;
  font-size: 18px;
  font-family: var(--serif);
  font-weight: 600;
}

.stage-track p {
  margin: 46px 0 0;
  color: var(--text-soft);
  font-size: 13px;
}

.stage-track span {
  display: block;
  margin-top: 24px;
  color: var(--accent);
  font-size: 12px;
  font-weight: 700;
}

.operating {
  display: grid;
  grid-template-columns: minmax(0, 0.78fr) minmax(560px, 1.22fr);
  gap: clamp(48px, 8vw, 130px);
  align-items: center;
  padding: 128px 0;
}

.operating-model {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 120px minmax(0, 1fr);
  align-items: stretch;
}

.role-block {
  padding: 26px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: var(--surface);
}

.role-block > p {
  margin: 0;
  color: var(--accent);
  font-size: 12px;
  font-weight: 760;
}

.role-block h3 {
  margin: 8px 0 24px;
  font-size: 24px;
  font-family: var(--serif);
  font-weight: 600;
}

.role-block ul,
.metric-grid ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.role-block li {
  padding: 10px 0;
  border-top: 1px solid var(--line);
  color: var(--text-soft);
  font-size: 13px;
}

.feedback-loop {
  position: relative;
  display: grid;
  align-content: center;
  justify-items: center;
  gap: 10px;
  color: var(--text-soft);
  font-size: 10px;
}

.feedback-loop::before,
.feedback-loop::after {
  content: "";
  width: 74px;
  height: 1px;
  background: var(--accent);
}

.feedback-loop strong {
  color: var(--text);
  font-size: 12px;
}

.measurement {
  padding: 124px 0;
  border-block: 1px solid var(--line);
  background: var(--surface-soft);
}

.metric-grid {
  display: grid;
  grid-template-columns: 1.35fr 0.8fr 0.8fr;
  grid-template-areas:
    "primary adoption quality"
    "primary reuse discipline";
  gap: 14px;
  margin-top: 68px;
}

.metric-grid article {
  min-height: 210px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.metric-grid article:nth-child(2) {
  grid-area: adoption;
}

.metric-grid article:nth-child(3) {
  grid-area: quality;
}

.metric-primary {
  grid-area: primary;
  min-height: 434px !important;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  background: var(--text) !important;
  color: var(--page);
}

.metric-accent {
  grid-area: reuse;
  background: var(--accent) !important;
  color: #ffffff;
}

.metric-warning {
  grid-area: discipline;
  background: var(--accent-soft) !important;
}

.metric-grid article > p:first-child {
  margin: 0;
  color: var(--accent);
  font-size: 12px;
  font-weight: 760;
}

.metric-primary > p:first-child,
.metric-accent > p:first-child {
  color: inherit;
}

.metric-grid .metric-primary > p:first-child,
.metric-grid .metric-accent > p:first-child {
  color: inherit;
}

.metric-grid .metric-warning > p:first-child {
  color: var(--accent-strong);
}

.metric-grid h3 {
  margin: 12px 0 26px;
  font-size: 22px;
  font-family: var(--serif);
  font-weight: 600;
  line-height: 1.28;
}

.metric-primary h3 {
  max-width: 12ch;
  font-size: 40px;
}

.metric-grid li {
  padding: 7px 0;
  border-top: 1px solid color-mix(in srgb, currentColor 18%, transparent);
  color: color-mix(in srgb, currentColor 72%, transparent);
  font-size: 13px;
}

.metric-accent li {
  color: var(--accent-on);
}

.metric-warning > p:last-child {
  margin: 0;
  color: var(--text-soft);
  font-size: 13px;
}

.install {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(540px, 1.2fr);
  gap: clamp(48px, 8vw, 130px);
  align-items: center;
  padding: 128px 0;
}

.text-link {
  display: inline-block;
  margin-top: 28px;
  color: var(--accent);
  font-weight: 700;
}

.terminal {
  overflow: hidden;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: #161a22;
  color: #edf2ff;
  box-shadow: var(--panel-shadow);
}

.terminal-bar {
  display: flex;
  min-height: 48px;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  border-bottom: 1px solid #303747;
  color: #aeb8ca;
  font-size: 12px;
}

.terminal button {
  padding: 6px 10px;
  border: 1px solid #465067;
  border-radius: 6px;
  background: transparent;
  color: #edf2ff;
  cursor: pointer;
}

.terminal pre {
  margin: 0;
  padding: 26px;
  overflow-x: auto;
  font: 13px/1.8 ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

#copy-status {
  min-height: 24px;
  margin: 0;
  padding: 0 16px 12px;
  color: #aeb8ca;
  font-size: 11px;
}

.source-note {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(44px, 8vw, 130px);
  padding: 48px 0 96px;
  border-top: 1px solid var(--line);
}

.source-note h2 {
  margin: 0 0 12px;
  font-size: 20px;
  font-family: var(--serif);
  font-weight: 600;
}

.source-note p {
  margin: 0;
  color: var(--text-soft);
  font-size: 13px;
}

.site-footer {
  border-top: 1px solid var(--line);
}

.footer-shell {
  min-height: 84px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  color: var(--text-soft);
  font-size: 13px;
}

.footer-shell div {
  display: flex;
  gap: 22px;
}

.js .hero .reveal {
  opacity: 0;
  transform: translateY(20px);
}

.js .hero .reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 560ms cubic-bezier(0.16, 1, 0.3, 1), transform 560ms cubic-bezier(0.16, 1, 0.3, 1);
}

@media (prefers-color-scheme: dark) {
  :root {
    --page: #101319;
    --surface: #171c24;
    --surface-soft: #1d2330;
    --surface-strong: #262e3c;
    --text: #edf1f8;
    --text-soft: #a8b1c2;
    --line: #303949;
    --line-strong: #48546a;
    --accent: #7392ff;
    --accent-strong: #8ba5ff;
    --accent-soft: #202f60;
    --accent-on: #0d1118;
    --shadow: rgba(0, 0, 0, 0.28);
  }

  .brand-mark,
  .button-primary,
  .ontology-filters button[aria-pressed="true"],
  .metric-accent {
    color: #0d1118;
  }

  body::before {
    background-image:
      repeating-linear-gradient(0deg, rgba(238, 242, 239, 0.025) 0, rgba(238, 242, 239, 0.025) 1px, transparent 1px, transparent 4px),
      repeating-linear-gradient(90deg, rgba(238, 242, 239, 0.014) 0, rgba(238, 242, 239, 0.014) 1px, transparent 1px, transparent 7px);
  }
}

@media (max-width: 1100px) {
  :root {
    --content: min(100% - 40px, 980px);
  }

  .hero {
    grid-template-columns: 1fr;
    padding-top: 76px;
  }

  .hero-copy {
    max-width: 760px;
  }

  .hero h1 {
    font-size: 58px;
  }

  .evidence-shell {
    grid-template-columns: 1fr 1fr;
  }

  .evidence-copy,
  .evidence-links {
    grid-column: 1 / -1;
  }

  .evidence-links {
    display: flex;
    flex-wrap: wrap;
    gap: 10px 22px;
  }

  .operating,
  .install {
    grid-template-columns: 1fr;
  }

  .stage-track {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .stage-track li:nth-child(3) {
    border-right: 0;
  }

  .stage-track li:nth-child(n + 4) {
    border-top: 1px solid var(--line);
  }
}

@media (max-width: 767px) {
  :root {
    --content: calc(100% - 32px);
  }

  html {
    scroll-behavior: auto;
  }

  .nav-shell {
    grid-template-columns: 1fr auto;
    height: 62px;
  }

  .brand {
    font-size: 14px;
  }

  .nav-links {
    display: none;
  }

  .nav-github {
    font-size: 12px;
  }

  .hero {
    min-height: auto;
    padding: 64px 0 32px;
    gap: 56px;
  }

  .hero h1 {
    font-size: 43px;
  }

  .zine-meta {
    gap: 7px 12px;
    margin-bottom: 38px;
  }

  .zine-meta span + span {
    padding-left: 12px;
  }

  .hero-summary {
    font-size: 17px;
  }

  .evidence-copy h2 {
    font-size: 27px;
  }

  .definition-statement h2,
  .section-intro h2,
  .operating-copy h2,
  .install-copy h2 {
    font-size: 36px;
  }

  .metric-primary h3 {
    font-size: 35px;
  }

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

  .button {
    width: 100%;
  }

  .hero-proof {
    margin-top: 40px;
  }

  .ontology-panel {
    padding: 18px;
  }

  .ontology-heading-row {
    display: block;
  }

  .graph-status {
    margin-top: 8px;
  }

  .ontology-visual {
    grid-template-columns: 1fr;
  }

  .graph-scroll {
    overflow-x: auto;
    overscroll-behavior-inline: contain;
  }

  #ontology-graph {
    width: 650px;
    min-height: 0;
    aspect-ratio: 760 / 430;
  }

  .ontology-detail {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .detail-relations ul {
    grid-template-columns: 1fr;
  }

  .evidence-shell {
    grid-template-columns: 1fr;
    gap: 26px;
    padding: 36px 0;
  }

  .evidence-copy,
  .evidence-links {
    grid-column: auto;
  }

  .evidence-metrics {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px 0;
  }

  .evidence-metrics div:nth-child(odd) {
    border-left: 0;
    padding-left: 0;
  }

  .definition,
  .market,
  .operating,
  .install {
    padding: 88px 0;
  }

  .definition-statement,
  .market-heading,
  .source-note {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .definition-grid {
    grid-template-columns: 1fr;
    margin-top: 52px;
  }

  .definition-grid article,
  .definition-grid article + article {
    min-height: auto;
    padding: 24px 0;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .definition-grid h3 {
    margin-top: 24px;
  }

  .market-ledger {
    grid-template-columns: 1fr;
    margin-top: 44px;
  }

  .market-ledger article,
  .market-ledger article + article {
    min-height: auto;
    padding: 24px 0;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

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

  .market-ledger h3 {
    margin-top: 20px;
  }

  .lifecycle,
  .measurement {
    padding: 88px 0;
  }

  .stage-track {
    grid-template-columns: 1fr;
    margin-top: 48px;
  }

  .stage-track li,
  .stage-track li + li {
    min-height: auto;
    padding: 24px 0;
    border-right: 0;
    border-top: 1px solid var(--line);
  }

  .stage-track li:first-child {
    border-top: 0;
  }

  .stage-track p {
    margin-top: 18px;
  }

  .operating-model {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .feedback-loop {
    min-height: 120px;
  }

  .feedback-loop::before,
  .feedback-loop::after {
    width: 1px;
    height: 24px;
  }

  .metric-grid {
    grid-template-columns: 1fr;
    grid-template-areas:
      "primary"
      "adoption"
      "quality"
      "reuse"
      "discipline";
  }

  .metric-primary {
    min-height: 360px !important;
  }

  .terminal pre {
    font-size: 11px;
  }

  .source-note {
    padding-bottom: 72px;
  }

  .footer-shell {
    align-items: flex-start;
    flex-direction: column;
    justify-content: center;
    padding: 24px 0;
  }

  .footer-shell p {
    margin: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }

  .js .hero .reveal {
    opacity: 1;
    transform: none;
  }
}

@media (prefers-reduced-transparency: reduce) {
  .site-header,
  .ontology-panel {
    background: var(--surface);
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }
}