@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:wght@400;500&family=Manrope:wght@400;500;600;700&display=swap');

:root {
  color-scheme: light dark;
  --navy: #0b1720;
  --navy-soft: #142630;
  --paper: #f4f2e9;
  --paper-deep: #e8e5d9;
  --white: #fffdf7;
  --ink: #15242c;
  --muted: #53636a;
  --gold: #c88c24;
  --gold-light: #efc66f;
  --teal: #218f88;
  --line: rgba(21, 36, 44, 0.16);
  --line-dark: rgba(255, 253, 247, 0.18);
  --max: 1200px;
  --header: 74px;
  --sans: 'Manrope', 'Segoe UI', sans-serif;
  --mono: 'IBM Plex Mono', Consolas, monospace;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header) + 24px);
}

body {
  margin: 0;
  min-width: 320px;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  line-height: 1.65;
}

html.docs-auth-pending body {
  overflow: hidden;
  background: var(--navy);
}

html.docs-auth-pending body > * {
  visibility: hidden;
}

html.docs-auth-pending body > .docs-auth-shell {
  visibility: visible;
}

.docs-auth-shell {
  position: fixed;
  z-index: 1000;
  inset: 0;
  display: grid;
  place-items: center;
  overflow-y: auto;
  padding: 1.2rem;
  background:
    linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    var(--navy);
  background-size: 48px 48px;
  color: var(--white);
}

.docs-auth-panel {
  width: min(560px, 100%);
  padding: clamp(2rem, 6vw, 4rem);
  border: 1px solid rgba(239, 198, 111, 0.4);
  background: rgba(20, 38, 48, 0.96);
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.35);
}

.docs-auth-brand {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  margin-bottom: 2.5rem;
  border: 1px solid var(--gold-light);
  color: var(--gold-light);
  font-family: var(--mono);
}

.docs-auth-eyebrow {
  margin: 0 0 0.8rem;
  color: var(--gold-light);
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.docs-auth-panel h1 {
  margin: 0;
  color: var(--white);
  font-size: clamp(2rem, 6vw, 3.2rem);
  line-height: 1;
  letter-spacing: -0.04em;
}

.docs-auth-panel > p:not(.docs-auth-eyebrow) {
  margin: 1.3rem 0 0;
  color: #c2cecf;
}

.docs-auth-panel form {
  margin-top: 2.2rem;
}

.docs-auth-panel label {
  display: block;
  margin-bottom: 0.55rem;
  color: #d9e0df;
  font-family: var(--mono);
  font-size: 0.68rem;
  text-transform: uppercase;
}

.docs-auth-field {
  display: grid;
  grid-template-columns: 1fr auto;
}

.docs-auth-field input,
.docs-auth-field button {
  min-height: 52px;
  border: 1px solid rgba(255, 253, 247, 0.28);
  border-radius: 0;
  font: inherit;
}

.docs-auth-field input {
  min-width: 0;
  padding: 0.8rem 1rem;
  background: #081118;
  color: var(--white);
  outline: none;
}

.docs-auth-field input:focus {
  border-color: var(--gold-light);
  box-shadow: inset 0 0 0 1px var(--gold-light);
}

.docs-auth-field input[aria-invalid='true'] {
  border-color: #e9847a;
}

.docs-auth-field button {
  padding: 0.8rem 1.1rem;
  border-color: var(--gold-light);
  background: var(--gold-light);
  color: var(--navy);
  cursor: pointer;
  font-size: 0.8rem;
  font-weight: 700;
}

.docs-auth-field button:hover,
.docs-auth-field button:focus-visible {
  background: var(--white);
  border-color: var(--white);
}

.docs-auth-error {
  min-height: 1.4rem;
  margin: 0.6rem 0 0;
  color: #f3a39b;
  font-size: 0.78rem;
}

a {
  color: inherit;
}

.skip-link {
  position: fixed;
  z-index: 200;
  top: 8px;
  left: 8px;
  padding: 0.75rem 1rem;
  background: var(--white);
  color: var(--navy);
  transform: translateY(-140%);
}

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

.doc-header {
  position: sticky;
  z-index: 100;
  top: 0;
  height: var(--header);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  padding: 0 max(1.2rem, calc((100vw - var(--max)) / 2));
  border-bottom: 1px solid var(--line-dark);
  background: rgba(11, 23, 32, 0.98);
  color: var(--white);
}

.doc-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.85rem;
  text-decoration: none;
}

.doc-brand-mark {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border: 1px solid var(--gold-light);
  color: var(--gold-light);
  font-family: var(--mono);
  font-size: 0.86rem;
}

.doc-brand > span:last-child {
  display: grid;
  line-height: 1.2;
}

.doc-brand strong {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.doc-brand small {
  margin-top: 0.16rem;
  color: #aebbc0;
  font-family: var(--mono);
  font-size: 0.62rem;
  text-transform: uppercase;
}

.doc-nav {
  display: flex;
  align-items: center;
  gap: clamp(1rem, 2.5vw, 2.2rem);
  font-size: 0.8rem;
  font-weight: 600;
}

.doc-nav > a,
.library-menu > summary {
  color: #d9e0df;
  text-decoration: none;
}

.doc-nav > a:hover,
.doc-nav > a:focus-visible,
.library-menu > summary:hover,
.library-menu > summary:focus-visible {
  color: var(--gold-light);
}

.library-menu {
  position: relative;
}

.library-menu > summary {
  cursor: pointer;
  list-style: none;
  padding: 0.55rem 0.8rem;
  border: 1px solid var(--line-dark);
}

.library-menu > summary::-webkit-details-marker {
  display: none;
}

.library-menu > summary::after {
  content: '+';
  margin-left: 0.7rem;
  color: var(--gold-light);
}

.library-menu[open] > summary::after {
  content: '−';
}

.library-panel {
  position: absolute;
  top: calc(100% + 0.8rem);
  right: 0;
  width: min(780px, calc(100vw - 2.4rem));
  display: grid;
  grid-template-columns: 0.65fr 1.45fr 0.9fr 1.2fr;
  gap: 1.5rem;
  padding: 1.5rem;
  border: 1px solid rgba(239, 198, 111, 0.32);
  background: var(--navy-soft);
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.3);
}

.library-panel section {
  min-width: 0;
}

.library-panel p {
  margin: 0 0 0.65rem;
  color: var(--gold-light);
  font-family: var(--mono);
  font-size: 0.64rem;
  text-transform: uppercase;
}

.library-panel a {
  display: block;
  padding: 0.25rem 0;
  color: #d9e0df;
  font-size: 0.75rem;
  font-weight: 500;
  line-height: 1.35;
  text-decoration: none;
}

.library-panel a:hover,
.library-panel a:focus-visible {
  color: var(--white);
  text-decoration: underline;
  text-decoration-color: var(--gold-light);
  text-underline-offset: 4px;
}

.eyebrow {
  margin: 0 0 1rem;
  color: var(--gold);
  font-family: var(--mono);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.reference-hero,
.library-hero {
  position: relative;
  overflow: hidden;
  background: var(--navy);
  color: var(--white);
}

.hero-grid {
  position: absolute;
  inset: 0;
  opacity: 0.18;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.09) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.09) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(105deg, transparent 5%, black 65%, transparent 100%);
}

.reference-hero {
  min-height: 360px;
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(280px, 0.65fr);
  gap: clamp(2rem, 6vw, 6rem);
  align-items: center;
  padding: clamp(2.6rem, 5vw, 4.5rem) max(1.2rem, calc((100vw - var(--max)) / 2));
}

.hero-copy,
.mission-value,
.library-hero-copy,
.library-note {
  position: relative;
}

.hero-copy h1 {
  margin: 0;
  color: var(--white);
  font-size: clamp(2.5rem, 5vw, 4.15rem);
  line-height: 0.92;
  letter-spacing: -0.055em;
}

.hero-title {
  max-width: 780px;
  margin: 1.55rem 0 0;
  font-size: clamp(1.15rem, 2vw, 1.65rem);
  font-weight: 600;
  line-height: 1.25;
}

.hero-summary {
  max-width: 760px;
  margin: 1.25rem 0 0;
  color: #c2cecf;
  font-size: 1.03rem;
}

.mission-value {
  padding: 1.5rem 0 0 1.5rem;
  border-top: 1px solid var(--gold-light);
  border-left: 1px solid var(--gold-light);
}

.mission-value span {
  color: var(--gold-light);
  font-family: var(--mono);
  font-size: 0.67rem;
  text-transform: uppercase;
}

.mission-value p {
  margin: 0.8rem 0 0;
  color: #e3e9e7;
  font-size: 1rem;
}

.reference-section,
.diagram-section,
.entry-section,
.atlas-section,
.related-section,
.reference-index,
.library-contact {
  width: min(var(--max), calc(100% - 2.4rem));
  margin: 0 auto;
  padding: clamp(3.2rem, 6vw, 5.8rem) 0;
}

.diagram-section {
  border-bottom: 1px solid var(--line);
}

.diagram-heading {
  display: grid;
  grid-template-columns: minmax(260px, 0.85fr) minmax(320px, 1.15fr);
  gap: 1rem clamp(3rem, 8vw, 8rem);
  align-items: end;
}

.diagram-heading .eyebrow {
  grid-column: 1 / -1;
}

.diagram-heading h2 {
  margin: 0;
  color: var(--navy);
  font-size: clamp(1.6rem, 3vw, 2.45rem);
  line-height: 1.06;
  letter-spacing: -0.035em;
}

.diagram-heading > p:last-child {
  margin: 0;
  color: var(--muted);
}

.system-diagram {
  margin: 2.5rem 0 0;
  padding: clamp(1.25rem, 3vw, 2.4rem);
  border: 1px solid rgba(239, 198, 111, 0.3);
  background:
    linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    var(--navy);
  background-size: 32px 32px;
  color: var(--white);
}

.entry-section {
  border-bottom: 1px solid var(--line);
}

.entry-heading {
  display: grid;
  grid-template-columns: minmax(260px, 0.85fr) minmax(320px, 1.15fr);
  gap: 1rem clamp(3rem, 8vw, 8rem);
  align-items: end;
}

.entry-heading .eyebrow {
  grid-column: 1 / -1;
}

.entry-heading h2 {
  margin: 0;
  color: var(--navy);
  font-size: clamp(1.6rem, 3vw, 2.45rem);
  line-height: 1.1;
  letter-spacing: -0.025em;
}

.entry-heading > p:last-child {
  margin: 0;
  color: var(--muted);
}

.entry-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  margin-top: 2.5rem;
  border: 1px solid var(--line);
  background: var(--line);
}

.entry-card {
  min-width: 0;
  padding: 1.5rem;
  background: var(--white);
}

.entry-card h3 {
  margin: 0;
  color: var(--navy);
  font-size: 1.15rem;
}

.entry-card > p {
  min-height: 3.2rem;
  margin: 0.65rem 0 1.3rem;
  color: var(--muted);
  font-size: 0.82rem;
}

.entry-card ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

.entry-card li {
  position: relative;
}

.entry-card li + li {
  margin-top: 1.2rem;
}

.entry-card li + li::before {
  content: '↓';
  position: absolute;
  top: -1.15rem;
  left: 0.85rem;
  color: var(--gold);
  font-family: var(--mono);
}

.entry-card a {
  display: block;
  padding: 0.72rem 0.85rem;
  border: 1px solid var(--line);
  color: var(--ink);
  font-family: var(--mono);
  font-size: 0.7rem;
  font-weight: 500;
  text-decoration: none;
}

.entry-card a:hover,
.entry-card a:focus-visible {
  border-color: var(--teal);
  background: rgba(33, 143, 136, 0.08);
}

.system-node {
  min-width: 0;
  padding: 1rem;
  border: 1px solid rgba(255, 253, 247, 0.25);
  background: rgba(20, 38, 48, 0.96);
  box-shadow: inset 3px 0 0 var(--teal);
}

.system-node strong,
.system-node span {
  display: block;
}

.system-node strong {
  color: var(--white);
  font-size: 0.9rem;
  line-height: 1.25;
}

.system-node span {
  margin-top: 0.42rem;
  color: #b9c6c8;
  font-family: var(--mono);
  font-size: 0.68rem;
  line-height: 1.45;
}

.fabric-map {
  position: relative;
  isolation: isolate;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  grid-template-rows: auto auto auto auto;
  gap: 1.6rem clamp(1.2rem, 4vw, 3.5rem);
  min-height: 500px;
  padding: 1rem;
}

.fabric-map::before,
.fabric-map::after {
  content: '';
  position: absolute;
  z-index: -1;
  pointer-events: none;
}

.fabric-map::before {
  inset: 12% 18% 24%;
  border: 1px solid rgba(239, 198, 111, 0.3);
  border-radius: 50%;
  background:
    linear-gradient(90deg, transparent calc(50% - 0.5px), rgba(239, 198, 111, 0.28) 50%, transparent calc(50% + 0.5px)),
    linear-gradient(transparent calc(50% - 0.5px), rgba(239, 198, 111, 0.28) 50%, transparent calc(50% + 0.5px));
}

.fabric-map::after {
  inset: 24% 31% 36%;
  border: 1px dashed rgba(33, 143, 136, 0.7);
  border-radius: 50%;
}

.fabric-center {
  z-index: 2;
  grid-column: 2;
  grid-row: 2;
  align-self: center;
}

.fabric-center .system-node {
  border-color: var(--gold-light);
  background: #071117;
  box-shadow: inset 0 0 0 1px rgba(239, 198, 111, 0.25), 0 0 34px rgba(200, 140, 36, 0.14);
  text-align: center;
}

.fabric-sectors {
  display: contents;
}

.fabric-sector {
  z-index: 1;
}

.fabric-sector-1 {
  grid-column: 2;
  grid-row: 1;
}

.fabric-sector-2 {
  grid-column: 3;
  grid-row: 2;
}

.fabric-sector-3 {
  grid-column: 2;
  grid-row: 3;
}

.fabric-sector-4 {
  grid-column: 1;
  grid-row: 2;
}

.fabric-sector .system-node {
  min-height: 94px;
  background: rgba(14, 34, 43, 0.94);
}

.fabric-edge {
  grid-column: 1 / -1;
  grid-row: 4;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1rem;
  align-items: center;
  padding-top: 1.25rem;
  border-top: 1px solid rgba(255, 253, 247, 0.2);
}

.fabric-edge > span {
  color: var(--gold-light);
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.fabric-edge > div {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 0.45rem;
}

.fabric-edge b {
  padding: 0.55rem 0.35rem;
  border: 1px solid rgba(255, 253, 247, 0.18);
  color: #b9c6c8;
  font-family: var(--mono);
  font-size: 0.63rem;
  font-weight: 500;
  text-align: center;
}

.constellation-map {
  position: relative;
  isolation: isolate;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  grid-template-rows: repeat(3, minmax(112px, auto));
  grid-template-areas:
    '. behavior .'
    'data center visual'
    'compute . host';
  gap: 1.25rem clamp(1.5rem, 5vw, 4.5rem);
  padding: 0.5rem;
}

.constellation-map::before {
  content: '';
  position: absolute;
  z-index: -1;
  inset: 14% 16%;
  background:
    linear-gradient(32deg, transparent calc(50% - 0.5px), rgba(239, 198, 111, 0.32) 50%, transparent calc(50% + 0.5px)),
    linear-gradient(-32deg, transparent calc(50% - 0.5px), rgba(33, 143, 136, 0.42) 50%, transparent calc(50% + 0.5px)),
    radial-gradient(circle at center, transparent 0 29%, rgba(239, 198, 111, 0.24) 30%, transparent 31%);
}

.constellation-center {
  grid-area: center;
  align-self: center;
}

.constellation-center .system-node {
  border-color: var(--gold-light);
  box-shadow: inset 3px 0 0 var(--gold-light), 0 0 30px rgba(200, 140, 36, 0.12);
  text-align: center;
}

.constellation-group {
  align-self: stretch;
  min-width: 0;
  padding: 1rem;
  border: 1px solid rgba(255, 253, 247, 0.2);
  background: rgba(14, 34, 43, 0.94);
}

.constellation-group-1 { grid-area: behavior; }
.constellation-group-2 { grid-area: data; }
.constellation-group-3 { grid-area: visual; }
.constellation-group-4 { grid-area: compute; }
.constellation-group-5 { grid-area: host; }

.constellation-group span,
.constellation-group strong,
.constellation-group small {
  display: block;
}

.constellation-group span {
  color: var(--gold-light);
  font-family: var(--mono);
  font-size: 0.58rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.constellation-group strong {
  margin-top: 0.5rem;
  color: var(--white);
  font-size: 0.83rem;
}

.constellation-group small {
  margin-top: 0.35rem;
  color: #aebbc0;
  font-family: var(--mono);
  font-size: 0.62rem;
}

.product-map {
  display: grid;
  gap: 1.5rem;
}

.product-lanes {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.product-lane {
  --lane-color: var(--teal);
  position: relative;
  display: grid;
  grid-template-rows: auto auto auto 1fr auto;
  min-height: 280px;
  padding: 1.35rem;
  overflow: hidden;
  border: 1px solid rgba(255, 253, 247, 0.2);
  background: rgba(14, 34, 43, 0.94);
}

.product-lane-2 { --lane-color: var(--gold-light); }
.product-lane-3 { --lane-color: #8ba9d8; }

.product-lane::before {
  content: '';
  position: absolute;
  inset: 0 auto 0 0;
  width: 4px;
  background: var(--lane-color);
}

.product-lane > span {
  color: var(--lane-color);
  font-family: var(--mono);
  font-size: 0.58rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.product-lane > strong {
  margin-top: 1rem;
  color: var(--white);
  font-size: 1rem;
}

.product-lane p {
  margin: 0.5rem 0 0;
  color: #aebbc0;
  font-family: var(--mono);
  font-size: 0.65rem;
}

.product-lane i {
  position: relative;
  width: 1px;
  min-height: 64px;
  margin: 1.1rem 0 1rem 0.55rem;
  background: var(--lane-color);
}

.product-lane i::before,
.product-lane i::after {
  content: '';
  position: absolute;
  left: 50%;
  width: 9px;
  height: 9px;
  border: 2px solid var(--lane-color);
  border-radius: 50%;
  background: var(--navy);
  transform: translateX(-50%);
}

.product-lane i::before { top: 0; }
.product-lane i::after { bottom: 0; }

.product-lane small {
  padding-top: 0.8rem;
  border-top: 1px solid rgba(255, 253, 247, 0.16);
  color: var(--white);
  font-family: var(--mono);
  font-size: 0.66rem;
}

.product-base {
  position: relative;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1rem 2rem;
  padding: 1.2rem 1.4rem;
  border: 1px solid rgba(239, 198, 111, 0.55);
  background: #071117;
}

.product-base::before {
  content: '';
  position: absolute;
  top: -1.55rem;
  left: 16.66%;
  width: 66.66%;
  height: 1.55rem;
  border-right: 1px solid rgba(239, 198, 111, 0.45);
  border-left: 1px solid rgba(239, 198, 111, 0.45);
}

.product-base strong {
  color: var(--gold-light);
  font-size: 0.82rem;
}

.product-base span {
  color: #aebbc0;
  font-family: var(--mono);
  font-size: 0.66rem;
}

.crosscut-map {
  display: grid;
  grid-template-columns: minmax(140px, 0.8fr) repeat(4, minmax(100px, 1fr));
  gap: 1px;
  min-width: 680px;
  background: rgba(255, 253, 247, 0.16);
}

.system-diagram-crosscut {
  overflow-x: auto;
}

.crosscut-corner,
.crosscut-head,
.crosscut-layer,
.crosscut-cell {
  min-width: 0;
  background: #0d2029;
}

.crosscut-corner,
.crosscut-head {
  min-height: 110px;
  padding: 1rem;
}

.crosscut-corner {
  display: flex;
  align-items: end;
  color: #84979c;
  font-family: var(--mono);
  font-size: 0.6rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.crosscut-head {
  box-shadow: inset 0 4px 0 var(--crosscut-color);
}

.crosscut-head strong,
.crosscut-head span {
  display: block;
}

.crosscut-head strong {
  color: var(--crosscut-color);
  font-size: 0.78rem;
}

.crosscut-head span {
  margin-top: 0.5rem;
  color: #aebbc0;
  font-family: var(--mono);
  font-size: 0.58rem;
}

.crosscut-layer {
  display: flex;
  align-items: center;
  min-height: 70px;
  padding: 0.8rem 1rem;
  color: var(--white);
  font-size: 0.72rem;
  font-weight: 600;
}

.crosscut-cell {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 70px;
  color: var(--crosscut-color);
}

.crosscut-cell::before {
  content: '';
  position: absolute;
  inset: 0 42%;
  background: color-mix(in srgb, var(--crosscut-color) 18%, transparent);
}

.crosscut-cell span {
  z-index: 1;
  font-family: var(--mono);
}

.crosscut-tone-1 { --crosscut-color: #60bdb4; }
.crosscut-tone-2 { --crosscut-color: #efc66f; }
.crosscut-tone-3 { --crosscut-color: #8ba9d8; }
.crosscut-tone-4 { --crosscut-color: #df8d84; }

.ownership-matrix {
  display: grid;
  grid-template-columns: minmax(84px, 0.42fr) repeat(2, minmax(0, 1fr));
  gap: 1px;
  min-width: 560px;
  background: rgba(255, 253, 247, 0.18);
}

.system-diagram-matrix {
  overflow-x: auto;
}

.matrix-corner,
.matrix-axis-x,
.matrix-axis-y {
  padding: 0.8rem;
  background: #0d2029;
  color: #9fb0b4;
  font-family: var(--mono);
  font-size: 0.58rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.matrix-axis-x {
  color: var(--gold-light);
  text-align: center;
}

.matrix-axis-y {
  display: flex;
  align-items: center;
  color: #60bdb4;
}

.ownership-matrix .system-node {
  min-height: 112px;
  border: 0;
  background: #102832;
}

.ownership-matrix .matrix-cell-2,
.ownership-matrix .matrix-cell-4 {
  box-shadow: inset 3px 0 0 var(--gold-light);
}

.ownership-matrix .matrix-cell-3,
.ownership-matrix .matrix-cell-4 {
  background: #142d37;
}

.reference-routes {
  display: grid;
  gap: 1.4rem;
}

.reference-route {
  --route-color: #60bdb4;
  display: grid;
  grid-template-columns: 90px 1fr;
  gap: 1.25rem;
  align-items: center;
}

.reference-route.route-2 { --route-color: var(--gold-light); }
.reference-route.route-3 { --route-color: #8ba9d8; }

.reference-route > strong {
  color: var(--route-color);
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.reference-route ol {
  position: relative;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.reference-route ol::before {
  content: '';
  position: absolute;
  top: 13px;
  right: 8%;
  left: 8%;
  height: 2px;
  background: var(--route-color);
}

.reference-route li {
  position: relative;
  z-index: 1;
  color: var(--white);
  font-size: 0.7rem;
  text-align: center;
}

.reference-route li span {
  display: grid;
  place-items: center;
  width: 27px;
  height: 27px;
  margin: 0 auto 0.65rem;
  border: 2px solid var(--route-color);
  border-radius: 50%;
  background: var(--navy);
  color: var(--route-color);
  font-family: var(--mono);
  font-size: 0.52rem;
}

.diagram-flow,
.diagram-stack {
  margin: 0;
  padding: 0;
  list-style: none;
}

.diagram-flow {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 2rem;
}

.diagram-flow li {
  position: relative;
}

.diagram-flow li:not(:last-child)::after {
  content: '→';
  position: absolute;
  top: 50%;
  right: -1.45rem;
  color: var(--gold-light);
  font-family: var(--mono);
  transform: translateY(-50%);
}

.diagram-stack {
  width: min(720px, 100%);
  margin-inline: auto;
  display: flex;
  flex-direction: column;
}

.diagram-stack li + li {
  margin-top: 0.65rem;
}

.diagram-stack li:nth-child(2) {
  margin-inline: 4%;
}

.diagram-stack li:nth-child(3) {
  margin-inline: 8%;
}

.diagram-stack li:nth-child(4) {
  margin-inline: 12%;
}

.diagram-split {
  display: grid;
  grid-template-columns: minmax(150px, 0.85fr) auto minmax(280px, 1.4fr) auto minmax(150px, 0.85fr);
  gap: 1rem;
  align-items: center;
}

.diagram-branches {
  display: grid;
  gap: 0.7rem;
}

.diagram-arrow {
  color: var(--gold-light);
  font-family: var(--mono);
  font-size: 1.2rem;
}

.diagram-result {
  box-shadow: inset 3px 0 0 var(--gold-light);
}

.node-program {
  display: grid;
  gap: 1.5rem;
}

.node-program-start,
.node-program-path {
  display: flex;
  align-items: center;
  gap: 0.8rem;
}

.node-program-start .system-node,
.node-program-path .system-node {
  flex: 1;
}

.node-program-start > span,
.node-program-path > span {
  flex: 0 0 auto;
  color: var(--gold-light);
  font-family: var(--mono);
}

.node-program-paths {
  display: grid;
  gap: 0.9rem;
  padding-left: clamp(1rem, 8vw, 8rem);
}

.node-program-path small {
  flex: 0 0 76px;
  color: var(--gold-light);
  font-family: var(--mono);
  font-size: 0.62rem;
  text-transform: uppercase;
}

.node-success {
  box-shadow: inset 3px 0 0 #75bf88;
}

.node-error {
  box-shadow: inset 3px 0 0 #df756b;
}

.atlas-section {
  border-bottom: 1px solid var(--line);
}

.atlas-heading {
  display: grid;
  grid-template-columns: minmax(260px, 0.85fr) minmax(320px, 1.15fr);
  gap: 1rem clamp(3rem, 8vw, 8rem);
  align-items: end;
}

.atlas-heading .eyebrow {
  grid-column: 1 / -1;
}

.atlas-heading h2 {
  margin: 0;
  color: var(--navy);
  font-size: clamp(1.6rem, 3vw, 2.45rem);
  line-height: 1.1;
  letter-spacing: -0.025em;
}

.atlas-heading > p:last-child {
  margin: 0;
  color: var(--muted);
}

.atlas-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.2rem;
  margin-top: 2.5rem;
}

.atlas-card {
  min-width: 0;
  display: grid;
  grid-template-rows: auto 1fr;
  border: 1px solid var(--line);
  background: rgba(255, 253, 247, 0.48);
}

.atlas-card > header {
  padding: 1.35rem;
  border-bottom: 1px solid var(--line);
}

.atlas-card > header > span {
  color: var(--teal);
  font-family: var(--mono);
  font-size: 0.62rem;
  text-transform: uppercase;
}

.atlas-card h3 {
  margin: 0.45rem 0 0;
  color: var(--navy);
  font-size: 1.12rem;
  line-height: 1.25;
}

.atlas-card header p {
  margin: 0.55rem 0 0;
  color: var(--muted);
  font-size: 0.8rem;
}

.atlas-diagram {
  width: 100%;
  margin: 0;
  padding: 1.25rem;
  border: 0;
}

.atlas-diagram .diagram-flow {
  grid-template-columns: 1fr;
  gap: 1.45rem;
}

.atlas-diagram .diagram-flow li:not(:last-child)::after {
  content: '↓';
  top: auto;
  right: 50%;
  bottom: -1.25rem;
  transform: translateX(50%);
}

.atlas-diagram .system-node {
  padding: 0.8rem 0.9rem;
}

.atlas-diagram .system-node strong {
  font-size: 0.78rem;
}

.atlas-diagram .system-node span {
  font-size: 0.63rem;
}

.plate-marker-defs {
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
}

.plate-marker-defs .ahf {
  fill: #71838a;
}

.plate-marker-defs .ahf-a {
  fill: #a97019;
}

.plate-marker-defs .ahf-g {
  fill: #2b7350;
}

.plate-marker-defs .ahf-r {
  fill: #a43226;
}

.atlas-grid--plates {
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.5rem, 4vw, 2.8rem);
}

.atlas-plate {
  box-shadow: 0 18px 50px -42px rgba(11, 23, 32, 0.8);
}

.atlas-plate > header {
  display: grid;
  grid-template-columns: minmax(13rem, 0.8fr) minmax(18rem, 1.2fr);
  gap: 0.5rem clamp(2rem, 7vw, 7rem);
  align-items: end;
  padding: clamp(1.25rem, 3vw, 2rem);
}

.atlas-plate > header > span {
  grid-column: 1 / -1;
}

.atlas-plate h3 {
  max-width: 34ch;
  margin-top: 0.2rem;
  font-size: clamp(1.15rem, 2.2vw, 1.55rem);
}

.atlas-plate header p {
  max-width: 52ch;
  margin: 0;
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.plate-visual {
  --plate-surf: #edf1ef;
  --plate-surf2: #fffdf7;
  --plate-ink: #14232b;
  --plate-muted: #5a6a71;
  --plate-rule: #bac4c4;
  --plate-rule-hi: #71838a;
  --plate-brass: #a97019;
  --plate-pass: #2b7350;
  --plate-refuse: #a43226;
  --plate-pending: #58717d;
  display: block;
  min-width: 0;
  margin: 0;
  overflow-x: auto;
  padding: clamp(1rem, 3vw, 2rem);
  background:
    linear-gradient(rgba(21, 36, 44, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(21, 36, 44, 0.035) 1px, transparent 1px),
    var(--plate-surf);
  background-size: 24px 24px;
}

.plate-visual .d {
  display: block;
  width: 100%;
  min-width: 760px;
  height: auto;
  font-family: var(--mono);
}

.plate-visual .d .b {
  fill: var(--plate-surf2);
  stroke: var(--plate-rule-hi);
  stroke-width: 1.2;
}

.plate-visual .d .b.acc {
  stroke: var(--plate-brass);
}

.plate-visual .d .b.ok {
  stroke: var(--plate-pass);
}

.plate-visual .d .b.no {
  stroke: var(--plate-refuse);
}

.plate-visual .d .b.pd {
  stroke: var(--plate-pending);
  stroke-dasharray: 5 3.5;
}

.plate-visual .d .b.flat {
  fill: none;
  stroke: var(--plate-rule);
  stroke-dasharray: 3 3;
}

.plate-visual .d .fillok {
  fill: var(--plate-pass);
  opacity: 0.1;
  stroke: none;
}

.plate-visual .d .fillno {
  fill: var(--plate-refuse);
  opacity: 0.1;
  stroke: none;
}

.plate-visual .d text {
  fill: var(--plate-ink);
  font-size: 12px;
}

.plate-visual .d .t {
  font-size: 12px;
  font-weight: 600;
}

.plate-visual .d .s {
  fill: var(--plate-muted);
  font-size: 10px;
}

.plate-visual .d .hdr {
  fill: var(--plate-brass);
  font-size: 10px;
  letter-spacing: 0.14em;
}

.plate-visual .d .okt {
  fill: var(--plate-pass);
}

.plate-visual .d .not {
  fill: var(--plate-refuse);
}

.plate-visual .d .pdt {
  fill: var(--plate-pending);
}

.plate-visual .d .ln {
  fill: none;
  stroke: var(--plate-rule-hi);
  stroke-width: 1.2;
}

.plate-visual .d .ln.a {
  stroke: var(--plate-brass);
}

.plate-visual .d .ln.g {
  stroke: var(--plate-pass);
}

.plate-visual .d .ln.r {
  stroke: var(--plate-refuse);
}

.plate-visual .d .ln.d {
  stroke-dasharray: 4 3;
}

.plate-visual--html .diagram {
  display: grid;
  gap: 14px;
  min-width: 720px;
  padding: 0;
}

.plate-visual--html .flow {
  grid-template-columns: 1fr auto repeat(3, 1fr);
  align-items: stretch;
}

.plate-visual--html .box {
  min-width: 0;
  padding: 16px;
  border: 1px solid var(--plate-rule);
  background: var(--plate-surf2);
}

.plate-visual--html .box.accent {
  border-top: 3px solid var(--plate-brass);
}

.plate-visual--html .box.pass {
  border-left: 3px solid var(--plate-pass);
}

.plate-visual--html .box.refuse {
  border-left: 3px solid var(--plate-refuse);
}

.plate-visual--html .box h3 {
  margin: 0;
  color: var(--plate-ink);
  font: 600 0.9rem/1.3 var(--mono);
}

.plate-visual--html .box p {
  margin: 8px 0 0;
  color: var(--plate-muted);
  font-size: 0.78rem;
}

.plate-visual--html .arrow {
  display: grid;
  place-items: center;
  color: var(--plate-brass);
  font: 24px var(--mono);
}

.plate-visual--html .cards {
  grid-template-columns: repeat(3, 1fr);
}

.plate-visual--html .families {
  grid-template-columns: repeat(2, 1fr);
}

.plate-visual--html .grammar {
  display: grid;
  min-width: 720px;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--plate-rule);
}

.plate-visual--html .grammar .box {
  border: 0;
}

.plate-visual--html .grammar code {
  display: block;
  margin-bottom: 8px;
  color: var(--plate-brass);
  font-size: 0.82rem;
}

.plate-visual--html .sequence {
  counter-reset: step;
}

.plate-visual--html .sequence .box {
  display: grid;
  grid-template-columns: 36px 1fr;
  gap: 12px;
}

.plate-visual--html .sequence .box::before {
  counter-increment: step;
  content: counter(step);
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  border: 1px solid var(--plate-brass);
  color: var(--plate-brass);
  font: 12px var(--mono);
}

.plate-visual--html table {
  width: 100%;
  min-width: 720px;
  border-collapse: collapse;
  background: var(--plate-surf2);
}

.plate-visual--html th,
.plate-visual--html td {
  padding: 11px 13px;
  border-bottom: 1px solid var(--plate-rule);
  text-align: left;
  vertical-align: top;
}

.plate-visual--html th {
  color: var(--plate-brass);
  font: 0.62rem var(--mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.plate-visual--html td {
  color: var(--plate-ink);
  font-size: 0.78rem;
}

.plate-visual--html .m {
  font-family: var(--mono);
  font-size: 0.72rem;
}

.section-intro {
  display: grid;
  grid-template-columns: minmax(260px, 0.8fr) minmax(320px, 1.2fr);
  column-gap: clamp(3rem, 8vw, 8rem);
  align-items: end;
}

.section-intro .eyebrow {
  grid-column: 1 / -1;
}

.section-intro h2,
.use-case-band h2,
.related-section h2,
.index-heading h2,
.library-contact h2 {
  margin: 0;
  color: var(--navy);
  font-size: clamp(1.7rem, 3.2vw, 2.75rem);
  line-height: 1.06;
  letter-spacing: -0.035em;
}

.section-intro > p:last-child,
.index-heading > p:last-child {
  margin: 0;
  color: var(--muted);
}

.element-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin-top: 4rem;
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.element-card {
  min-width: 0;
  padding: clamp(1.5rem, 3vw, 2.5rem);
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: rgba(255, 253, 247, 0.48);
}

.card-signal {
  width: 36px;
  height: 3px;
  margin-bottom: 3rem;
  background: var(--teal);
}

.element-card h3 {
  margin: 0;
  color: var(--navy);
  font-size: 1.28rem;
  line-height: 1.25;
}

.element-card > p {
  min-height: 8.8rem;
  margin: 1rem 0 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.example {
  padding-top: 1.2rem;
  border-top: 1px solid var(--line);
}

.example span {
  color: var(--teal);
  font-family: var(--mono);
  font-size: 0.65rem;
  text-transform: uppercase;
}

.example p {
  margin: 0.55rem 0 0;
  color: var(--ink);
  font-size: 0.85rem;
}

.use-case-band {
  display: grid;
  grid-template-columns: minmax(280px, 0.75fr) minmax(350px, 1.25fr);
  gap: clamp(3rem, 8vw, 8rem);
  padding: clamp(4.5rem, 8vw, 7rem) max(1.2rem, calc((100vw - var(--max)) / 2));
  background: var(--paper-deep);
}

.use-case-band ul {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid rgba(21, 36, 44, 0.34);
}

.use-case-band li {
  display: grid;
  grid-template-columns: 24px 1fr;
  gap: 0.8rem;
  padding: 1.3rem 0;
  border-bottom: 1px solid rgba(21, 36, 44, 0.24);
  color: var(--navy);
  font-size: clamp(1rem, 1.4vw, 1.2rem);
  font-weight: 600;
}

.use-case-band li::before {
  content: '◆';
  color: var(--gold);
  font-size: 0.65rem;
  padding-top: 0.3rem;
}

.decision-section {
  display: grid;
  grid-template-columns: 1fr 0.9fr;
  gap: clamp(3rem, 8vw, 8rem);
  align-items: start;
}

.section-intro.compact {
  display: block;
}

.decision-list {
  border-top: 1px solid rgba(21, 36, 44, 0.34);
}

.decision-list p {
  display: grid;
  grid-template-columns: 22px 1fr;
  gap: 0.8rem;
  margin: 0;
  padding: 1.2rem 0;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
}

.decision-list p::before {
  content: '—';
  color: var(--teal);
}

.briefing-link {
  grid-column: 2;
  justify-self: start;
  display: inline-flex;
  align-items: center;
  gap: 1rem;
  padding: 0.95rem 1.2rem;
  background: var(--navy);
  color: var(--white);
  font-size: 0.85rem;
  font-weight: 700;
  text-decoration: none;
}

.briefing-link:hover,
.briefing-link:focus-visible {
  background: var(--teal);
}

.related-section {
  border-top: 1px solid var(--line);
}

.code-section {
  padding: clamp(4.5rem, 8vw, 8rem) max(1.2rem, calc((100vw - var(--max)) / 2));
  background: var(--navy);
  color: var(--white);
}

.code-intro {
  display: grid;
  grid-template-columns: 1fr 0.8fr;
  gap: 1.5rem clamp(3rem, 8vw, 8rem);
  align-items: end;
}

.code-intro .eyebrow {
  grid-column: 1 / -1;
  color: var(--gold-light);
}

.code-intro h2 {
  margin: 0;
  color: var(--white);
  font-size: clamp(1.7rem, 3.2vw, 2.75rem);
  line-height: 1.06;
  letter-spacing: -0.035em;
}

.code-intro > p:last-child {
  margin: 0;
  color: #c2cecf;
}

.code-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin-top: 4rem;
  border: 1px solid var(--line-dark);
  background: var(--line-dark);
}

.code-card {
  min-width: 0;
  display: grid;
  grid-template-rows: auto 1fr;
  background: var(--navy-soft);
}

.code-card > div {
  min-height: 150px;
  padding: 1.5rem;
}

.code-card h3 {
  margin: 0;
  color: var(--white);
  font-size: 1.15rem;
}

.code-card p {
  margin: 0.65rem 0 0;
  color: #aebbc0;
  font-size: 0.85rem;
}

.code-card pre {
  min-width: 0;
  margin: 0;
  padding: 1.5rem;
  overflow-x: auto;
  border-top: 1px solid var(--line-dark);
  background: #071117;
  color: #e6ebdf;
  font-family: var(--mono);
  font-size: 0.76rem;
  line-height: 1.65;
  tab-size: 4;
}

.related-section h2 {
  max-width: 760px;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  margin-top: 3rem;
  background: var(--line);
  border: 1px solid var(--line);
}

.related-card {
  display: grid;
  min-height: 190px;
  padding: 1.5rem;
  background: var(--white);
  text-decoration: none;
  transition: background-color 160ms ease, color 160ms ease;
}

.related-card > span {
  color: var(--teal);
  font-family: var(--mono);
  font-size: 0.62rem;
  text-transform: uppercase;
}

.related-card strong {
  align-self: center;
  color: var(--navy);
  font-size: 1.35rem;
}

.related-card small {
  align-self: end;
  color: var(--muted);
}

.related-card:hover,
.related-card:focus-visible {
  background: var(--navy);
  color: var(--white);
}

.related-card:hover strong,
.related-card:focus-visible strong,
.related-card:hover small,
.related-card:focus-visible small {
  color: var(--white);
}

.back-link {
  display: inline-block;
  margin-top: 2rem;
  color: var(--navy);
  font-size: 0.8rem;
  font-weight: 700;
  text-underline-offset: 5px;
}

.library-hero {
  min-height: 440px;
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(280px, 0.75fr);
  gap: clamp(3rem, 9vw, 9rem);
  align-items: center;
  padding: clamp(3.2rem, 6vw, 5.5rem) max(1.2rem, calc((100vw - var(--max)) / 2));
}

.library-hero-copy h1 {
  max-width: 900px;
  margin: 0;
  color: var(--white);
  font-size: clamp(2.5rem, 5vw, 4.15rem);
  line-height: 0.95;
  letter-spacing: -0.055em;
}

.library-hero-copy > p:last-child {
  max-width: 760px;
  margin: 1.6rem 0 0;
  color: #c2cecf;
  font-size: clamp(1.05rem, 1.5vw, 1.25rem);
}

.library-note {
  padding: 1.5rem;
  border: 1px solid rgba(239, 198, 111, 0.4);
  background: rgba(20, 38, 48, 0.7);
}

.library-note strong {
  color: var(--gold-light);
  font-size: 0.9rem;
}

.library-note p {
  margin: 0.7rem 0 0;
  color: #c2cecf;
  font-size: 0.86rem;
}

.reference-index + .reference-index {
  border-top: 1px solid var(--line);
}

.index-heading {
  display: grid;
  grid-template-columns: 1fr 0.72fr;
  gap: 2rem 6rem;
  align-items: end;
}

.index-heading .eyebrow {
  grid-column: 1 / -1;
}

.index-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin-top: 3.5rem;
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.index-grid.featured {
  grid-template-columns: 1fr;
}

.index-card {
  display: flex;
  flex-direction: column;
  min-height: 330px;
  padding: clamp(1.5rem, 3vw, 2.4rem);
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: rgba(255, 253, 247, 0.5);
  text-decoration: none;
  transition: background-color 160ms ease, transform 160ms ease;
}

.featured .index-card {
  min-height: 280px;
}

.index-card > span {
  color: var(--teal);
  font-family: var(--mono);
  font-size: 0.68rem;
  font-weight: 500;
  text-transform: uppercase;
}

.index-card h3 {
  margin: 2rem 0 0;
  color: var(--navy);
  font-size: clamp(1.35rem, 2.2vw, 2rem);
  line-height: 1.2;
}

.index-card p {
  margin: 1rem 0 2rem;
  color: var(--muted);
  font-size: 0.88rem;
}

.index-card small {
  margin-top: auto;
  color: var(--ink);
  font-weight: 700;
}

.index-card:hover,
.index-card:focus-visible {
  background: var(--white);
  transform: translateY(-3px);
}

.library-contact {
  display: grid;
  grid-template-columns: 0.9fr 1fr auto;
  gap: clamp(2rem, 5vw, 5rem);
  align-items: end;
  border-top: 1px solid var(--line);
}

.library-contact > p {
  margin: 0;
  color: var(--muted);
}

.library-contact > a {
  display: inline-flex;
  gap: 1rem;
  white-space: nowrap;
  padding: 0.95rem 1.2rem;
  background: var(--navy);
  color: var(--white);
  font-size: 0.85rem;
  font-weight: 700;
  text-decoration: none;
}

.library-contact > a:hover,
.library-contact > a:focus-visible {
  background: var(--teal);
}

@media (max-width: 900px) {
  .reference-hero,
  .library-hero,
  .section-intro,
  .diagram-heading,
  .entry-heading,
  .atlas-heading,
  .use-case-band,
  .decision-section,
  .index-heading,
  .library-contact {
    grid-template-columns: 1fr;
  }

  .code-intro {
    grid-template-columns: 1fr;
  }

  .code-intro .eyebrow {
    grid-column: auto;
  }

  .diagram-heading .eyebrow {
    grid-column: auto;
  }

  .entry-heading .eyebrow {
    grid-column: auto;
  }

  .atlas-heading .eyebrow {
    grid-column: auto;
  }

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

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

  .atlas-plate > header {
    grid-template-columns: 1fr;
  }

  .atlas-plate > header > span {
    grid-column: auto;
  }

  .entry-card > p {
    min-height: auto;
  }

  .diagram-flow {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .diagram-flow li:nth-child(2)::after {
    content: none;
  }

  .diagram-split {
    grid-template-columns: 1fr;
  }

  .diagram-arrow {
    justify-self: center;
    transform: rotate(90deg);
  }

  .reference-hero {
    min-height: auto;
  }

  .mission-value {
    max-width: 580px;
  }

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

  .element-card > p {
    min-height: auto;
  }

  .briefing-link {
    grid-column: auto;
  }

  .library-contact > a {
    justify-self: start;
  }
}

@media (max-width: 700px) {
  :root {
    --header: 66px;
  }

  .doc-header {
    padding-inline: 1.1rem;
  }

  .doc-nav > a {
    display: none;
  }

  .library-panel {
    position: fixed;
    inset: var(--header) 0 auto;
    width: 100%;
    max-height: calc(100vh - var(--header));
    grid-template-columns: repeat(2, 1fr);
    overflow-y: auto;
    border-right: 0;
    border-left: 0;
  }

  .reference-hero,
  .library-hero {
    padding-block: 2.8rem;
  }

  .hero-copy h1 {
    font-size: clamp(2.45rem, 12vw, 3.5rem);
  }

  .library-hero-copy h1 {
    font-size: clamp(2.45rem, 12vw, 3.5rem);
  }

  .element-grid,
  .related-grid,
  .index-grid {
    grid-template-columns: 1fr;
  }

  .card-signal {
    margin-bottom: 2rem;
  }

  .related-card {
    min-height: 160px;
  }

  .index-card,
  .featured .index-card {
    min-height: 290px;
  }

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

  .fabric-map {
    grid-template-columns: 1fr;
    grid-template-rows: auto;
    min-height: 0;
    padding: 0;
  }

  .fabric-map::before,
  .fabric-map::after {
    display: none;
  }

  .fabric-center {
    grid-column: 1;
    grid-row: 1;
  }

  .fabric-sectors {
    grid-column: 1;
    grid-row: 2;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.7rem;
  }

  .fabric-sector:nth-child(n) {
    grid-column: auto;
    grid-row: auto;
  }

  .fabric-edge {
    grid-column: 1;
    grid-row: 3;
    grid-template-columns: 1fr;
  }

  .fabric-edge > div {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .constellation-map {
    grid-template-columns: 1fr;
    grid-template-rows: auto;
    grid-template-areas:
      'center'
      'behavior'
      'data'
      'visual'
      'compute'
      'host';
    gap: 0.7rem;
    padding: 0;
  }

  .constellation-map::before {
    display: none;
  }

  .product-lanes {
    grid-template-columns: 1fr;
  }

  .product-lane {
    min-height: 240px;
  }

  .product-base {
    grid-template-columns: 1fr;
  }

  .product-base::before {
    display: none;
  }

  .reference-route {
    grid-template-columns: 1fr;
    gap: 0.65rem;
  }

  .diagram-flow {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .diagram-flow li:nth-child(2)::after {
    content: '↓';
  }

  .diagram-flow li:not(:last-child)::after {
    content: '↓';
    top: auto;
    right: 50%;
    bottom: -1.55rem;
    transform: translateX(50%);
  }

  .diagram-stack li:nth-child(n) {
    margin-inline: 0;
  }

  .node-program-start,
  .node-program-path {
    align-items: stretch;
    flex-direction: column;
  }

  .node-program-start > span,
  .node-program-path > span {
    align-self: center;
    transform: rotate(90deg);
  }

  .node-program-paths {
    padding-left: 0;
  }

  .node-program-path small {
    flex-basis: auto;
  }

  .code-card > div {
    min-height: auto;
  }

  .docs-auth-field {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 520px) {
  .fabric-sectors {
    grid-template-columns: 1fr;
  }

  .reference-route ol {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .reference-route ol::before {
    top: 10%;
    bottom: 10%;
    left: 13px;
    width: 2px;
    height: auto;
  }

  .reference-route li {
    display: grid;
    grid-template-columns: 27px 1fr;
    gap: 0.8rem;
    align-items: center;
    text-align: left;
  }

  .reference-route li span {
    margin: 0;
  }
}

@media (prefers-color-scheme: dark) {
  body {
    background: #08131a;
    color: #e7ece9;
  }

  .diagram-section,
  .entry-section,
  .atlas-section,
  .related-section,
  .reference-index + .reference-index,
  .library-contact {
    border-color: rgba(255, 253, 247, 0.16);
  }

  .section-intro h2,
  .diagram-heading h2,
  .entry-heading h2,
  .atlas-heading h2,
  .use-case-band h2,
  .related-section h2,
  .index-heading h2,
  .library-contact h2,
  .element-card h3,
  .entry-card h3,
  .atlas-card h3,
  .related-card strong,
  .index-card h3,
  .back-link {
    color: #f6f3e9;
  }

  .section-intro > p:last-child,
  .diagram-heading > p:last-child,
  .entry-heading > p:last-child,
  .atlas-heading > p:last-child,
  .index-heading > p:last-child,
  .element-card > p,
  .entry-card > p,
  .atlas-card header p,
  .decision-list p,
  .related-card small,
  .index-card p,
  .library-contact > p {
    color: #aebbc0;
  }

  .element-grid,
  .entry-grid,
  .atlas-grid,
  .related-grid,
  .index-grid {
    border-color: rgba(255, 253, 247, 0.16);
    background: rgba(255, 253, 247, 0.12);
  }

  .element-card,
  .entry-card,
  .atlas-card,
  .related-card,
  .index-card {
    border-color: rgba(255, 253, 247, 0.16);
    background: #10232d;
  }

  .plate-marker-defs .ahf {
    fill: #7e99a4;
  }

  .plate-marker-defs .ahf-a {
    fill: #d7aa60;
  }

  .plate-marker-defs .ahf-g {
    fill: #55ab7e;
  }

  .plate-marker-defs .ahf-r {
    fill: #de6f5c;
  }

  .plate-visual {
    --plate-surf: #0c1b23;
    --plate-surf2: #132832;
    --plate-ink: #e7ece9;
    --plate-muted: #9aadb2;
    --plate-rule: #314851;
    --plate-rule-hi: #7e99a4;
    --plate-brass: #d7aa60;
    --plate-pass: #55ab7e;
    --plate-refuse: #de6f5c;
    --plate-pending: #8aa5af;
    background:
      linear-gradient(rgba(255, 253, 247, 0.035) 1px, transparent 1px),
      linear-gradient(90deg, rgba(255, 253, 247, 0.035) 1px, transparent 1px),
      var(--plate-surf);
    background-size: 24px 24px;
  }

  .example,
  .entry-card a,
  .decision-list,
  .decision-list p {
    border-color: rgba(255, 253, 247, 0.16);
  }

  .example p,
  .entry-card a,
  .index-card small {
    color: #e7ece9;
  }

  .use-case-band {
    background: #10232d;
  }

  .use-case-band ul,
  .use-case-band li {
    border-color: rgba(255, 253, 247, 0.2);
  }

  .use-case-band li {
    color: #f6f3e9;
  }

  .index-card:hover,
  .index-card:focus-visible,
  .related-card:hover,
  .related-card:focus-visible {
    background: #17313d;
  }
}

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

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