:root {
  --paper: #f5ede5;
  --paper-deep: #eadfd3;
  --paper-pale: #fbf7f2;
  --ink: #281710;
  --ink-soft: #67564d;
  --line: #cfc0b2;
  --line-strong: #a9907d;
  --rust: #914828;
  --rust-dark: #6f321d;
  --moss: #3f5c51;
  --blue: #355e72;
  --gold: #a8782e;
  --plum: #6b536c;
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, Baskerville,
    "Times New Roman", serif;
  --sans: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  --max: 1180px;
  --shadow: 0 22px 70px rgb(63 36 20 / 8%);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: auto;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at 8% 8%, rgb(145 72 40 / 5%), transparent 28rem),
    radial-gradient(circle at 94% 21%, rgb(53 94 114 / 5%), transparent 30rem),
    var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  text-rendering: optimizeLegibility;
}

a {
  color: inherit;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

button,
input,
select,
textarea {
  color: inherit;
  font: inherit;
}

button,
select {
  cursor: pointer;
}

button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
summary:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--blue) 72%, white);
  outline-offset: 3px;
}

.skip-link {
  position: fixed;
  z-index: 1000;
  top: 0.75rem;
  left: 0.75rem;
  translate: 0 -180%;
  border-radius: 999px;
  background: var(--ink);
  color: var(--paper-pale);
  padding: 0.65rem 1rem;
}

.skip-link:focus {
  translate: 0;
}

.site-header {
  position: sticky;
  z-index: 50;
  top: 0;
  border-bottom: 1px solid color-mix(in srgb, var(--line) 74%, transparent);
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: blur(18px);
}

.site-header-inner {
  display: grid;
  grid-template-columns: minmax(12rem, 1fr) auto minmax(9rem, 1fr);
  align-items: center;
  width: min(calc(100% - 2rem), var(--max));
  min-height: 74px;
  margin: auto;
  gap: 1.4rem;
}

.site-brand {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  gap: 0.65rem;
  font-family: var(--serif);
  font-size: 1.1rem;
  font-weight: 700;
  text-decoration: none;
}

.site-brand i {
  color: var(--rust);
  font-weight: 500;
}

.brand-seal {
  position: relative;
  width: 1.05rem;
  height: 1.05rem;
  flex: none;
  border: 1px solid var(--rust);
  border-radius: 50%;
}

.brand-seal::before,
.brand-seal::after {
  position: absolute;
  content: "";
  border: 1px solid var(--rust);
  border-radius: 50%;
}

.brand-seal::before {
  inset: 0.2rem;
}

.brand-seal::after {
  inset: 0.38rem;
  background: var(--rust);
}

.primary-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.3rem;
}

.primary-nav a,
.seminar-link {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.07em;
  text-decoration: none;
  text-transform: uppercase;
}

.primary-nav a:hover,
.seminar-link:hover {
  color: var(--rust);
  text-decoration: underline;
}

.seminar-link {
  justify-self: end;
}

main {
  min-height: 64vh;
}

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

.home-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(20rem, 0.8fr);
  min-height: 690px;
  align-items: center;
  gap: clamp(2rem, 7vw, 7rem);
  padding-block: clamp(5rem, 10vw, 9rem);
}

.eyebrow {
  margin: 0 0 1rem;
  color: var(--rust);
  font-family: var(--mono);
  font-size: 0.74rem;
  font-weight: 650;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.hero-copy h1,
.page-intro h1 {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(4.3rem, 10.5vw, 8.7rem);
  font-weight: 400;
  letter-spacing: -0.055em;
  line-height: 0.84;
}

.hero-copy h1 em {
  display: block;
  color: var(--rust);
  font-weight: 400;
}

.hero-lede {
  max-width: 45rem;
  margin: 2.2rem 0 0;
  color: var(--ink-soft);
  font-family: var(--serif);
  font-size: clamp(1.35rem, 2.1vw, 1.75rem);
  line-height: 1.45;
}

.hero-note {
  display: flex;
  align-items: flex-start;
  max-width: 42rem;
  margin: 1.5rem 0 0;
  gap: 0.75rem;
  color: var(--ink-soft);
  font-size: 0.93rem;
}

.hero-note::before {
  width: 1.8rem;
  height: 1px;
  flex: none;
  margin-top: 0.75rem;
  background: var(--rust);
  content: "";
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 2.25rem;
}

.button,
.chip-button,
.text-button {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: transparent;
  padding: 0.65rem 1rem;
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  transition:
    background 150ms ease,
    border-color 150ms ease,
    translate 150ms ease;
}

.button:hover,
.chip-button:hover,
.text-button:hover {
  border-color: var(--rust);
  translate: 0 -1px;
}

.button.primary {
  border-color: var(--ink);
  background: var(--ink);
  color: var(--paper-pale);
}

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

.button.small {
  min-height: 38px;
  padding: 0.45rem 0.8rem;
  font-size: 0.8rem;
}

.commons-map {
  position: relative;
  width: min(100%, 470px);
  aspect-ratio: 1;
  justify-self: center;
  border: 1px solid color-mix(in srgb, var(--line) 75%, transparent);
  border-radius: 50%;
  background:
    radial-gradient(circle, transparent 25%, var(--line) 25.4%, transparent 26%),
    radial-gradient(circle, transparent 47%, var(--line) 47.4%, transparent 48%),
    radial-gradient(circle, transparent 69%, var(--line) 69.4%, transparent 70%);
  box-shadow: inset 0 0 90px rgb(255 255 255 / 30%);
}

.commons-map::before,
.commons-map::after {
  position: absolute;
  inset: 50%;
  width: 36%;
  height: 1px;
  transform-origin: left;
  background: var(--line);
  content: "";
}

.commons-map::before {
  rotate: 36deg;
}

.commons-map::after {
  rotate: 148deg;
}

.map-node {
  position: absolute;
  display: grid;
  width: 5.7rem;
  min-height: 5.7rem;
  place-items: center;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  background: var(--paper-pale);
  box-shadow: 0 10px 35px rgb(70 37 22 / 9%);
  color: var(--ink);
  font-family: var(--mono);
  font-size:0.72rem;
  letter-spacing: 0.06em;
  line-height: 1.25;
  text-align: center;
  text-transform: uppercase;
}

.map-node.core {
  z-index: 3;
  top: 50%;
  left: 50%;
  width: 8.2rem;
  min-height: 8.2rem;
  border-color: var(--rust);
  background: var(--rust);
  color: white;
  font-family: var(--serif);
  font-size: 1.1rem;
  letter-spacing: 0;
  text-transform: none;
  translate: -50% -50%;
}

.map-node.n1 {
  top: 4%;
  left: 38%;
  border-color: var(--blue);
}

.map-node.n2 {
  top: 29%;
  right: 1%;
  border-color: var(--gold);
}

.map-node.n3 {
  right: 11%;
  bottom: 7%;
  border-color: var(--moss);
}

.map-node.n4 {
  bottom: 4%;
  left: 21%;
  border-color: var(--plum);
}

.map-node.n5 {
  top: 37%;
  left: 0;
  border-color: var(--rust);
}

.map-node.n6 {
  top: 5%;
  right: 12%;
  width: 3.7rem;
  min-height: 3.7rem;
  background: var(--paper-deep);
  font-size:0.72rem;
}

.stats-band {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  border-block: 1px solid var(--line);
}

.stat {
  min-height: 150px;
  padding: 1.7rem 1.3rem;
  border-right: 1px solid var(--line);
}

.stat:last-child {
  border-right: 0;
}

.stat strong {
  display: block;
  font-family: var(--serif);
  font-size: clamp(2.6rem, 5vw, 4.4rem);
  font-weight: 400;
  letter-spacing: -0.045em;
  line-height: 1;
}

.stat span {
  display: block;
  margin-top: 0.6rem;
  color: var(--ink-soft);
  font-size: 0.79rem;
  line-height: 1.35;
}

.section {
  padding-block: clamp(4.5rem, 9vw, 8rem);
}

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

.section-head {
  display: grid;
  grid-template-columns: minmax(15rem, 0.45fr) minmax(0, 0.55fr);
  align-items: end;
  margin-bottom: 3rem;
  gap: 2rem;
}

.section-head h2,
.method-section h2,
.entity-section h2 {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(2.3rem, 5vw, 4.5rem);
  font-weight: 400;
  letter-spacing: -0.035em;
  line-height: 0.98;
}

.section-head p {
  max-width: 42rem;
  margin: 0;
  color: var(--ink-soft);
  font-size: 1.05rem;
}

.vertical-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border: 1px solid var(--line);
  border-radius: 1.4rem;
  overflow: hidden;
  background: color-mix(in srgb, var(--paper-pale) 58%, transparent);
  box-shadow: var(--shadow);
}

.vertical-card {
  display: flex;
  min-height: 430px;
  flex-direction: column;
  padding: clamp(1.5rem, 3vw, 2.5rem);
  border-right: 1px solid var(--line);
  text-decoration: none;
  transition: background 180ms ease;
}

.vertical-card:last-child {
  border-right: 0;
}

.vertical-card:hover {
  background: var(--paper-pale);
}

.vertical-number {
  color: var(--rust);
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
}

.vertical-card h3 {
  margin: auto 0 0;
  font-family: var(--serif);
  font-size: clamp(2.3rem, 4.2vw, 4rem);
  font-weight: 400;
  letter-spacing: -0.04em;
  line-height: 1;
}

.vertical-card p {
  margin: 1.2rem 0 2rem;
  color: var(--ink-soft);
}

.vertical-meta {
  display: flex;
  flex-wrap: wrap;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
  gap: 0.4rem 1rem;
  color: var(--ink-soft);
  font-family: var(--mono);
  font-size: 0.67rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.intent-grid,
.collection-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

.intent-card,
.collection-card {
  position: relative;
  min-height: 220px;
  border: 1px solid var(--line);
  border-radius: 1.2rem;
  background: color-mix(in srgb, var(--paper-pale) 68%, transparent);
  padding: 1.8rem;
  text-decoration: none;
  transition:
    border-color 160ms ease,
    background 160ms ease;
}

.intent-card:hover,
.collection-card:hover {
  border-color: var(--rust);
  background: var(--paper-pale);
}

.intent-card h3,
.collection-card h2,
.collection-card h3 {
  max-width: 31rem;
  margin: 2.3rem 0 0;
  font-family: var(--serif);
  font-size: clamp(1.65rem, 3vw, 2.65rem);
  font-weight: 400;
  letter-spacing: -0.025em;
  line-height: 1.08;
}

.intent-card p,
.collection-card p {
  max-width: 40rem;
  margin: 1rem 0 0;
  color: var(--ink-soft);
}

.arrow {
  position: absolute;
  top: 1.25rem;
  right: 1.5rem;
  color: var(--rust);
  font-size: 1.35rem;
}

.backbone-panel {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  overflow: hidden;
  border: 1px solid var(--ink);
  border-radius: 1.4rem;
  background: var(--ink);
  color: var(--paper-pale);
}

.backbone-copy {
  padding: clamp(2rem, 5vw, 4rem);
}

.backbone-copy h2 {
  margin: 1rem 0 0;
  font-family: var(--serif);
  font-size: clamp(3rem, 6vw, 5.8rem);
  font-weight: 400;
  letter-spacing: -0.045em;
  line-height: 0.92;
}

.backbone-copy p {
  max-width: 37rem;
  color: #d7c9be;
}

.backbone-copy .button {
  border-color: #d7c9be;
  color: white;
}

.backbone-ledger {
  display: grid;
  align-content: center;
  padding: clamp(2rem, 5vw, 4rem);
  border-left: 1px solid #735c4e;
  background:
    linear-gradient(90deg, transparent 3.9rem, #735c4e 4rem, transparent 4.05rem),
    repeating-linear-gradient(
      #281710,
      #281710 2.4rem,
      #735c4e 2.45rem,
      #281710 2.5rem
    );
}

.ledger-row {
  display: grid;
  grid-template-columns: 3.2rem 1fr auto;
  min-height: 2.5rem;
  align-items: center;
  gap: 0.8rem;
  color: #d7c9be;
  font-family: var(--mono);
  font-size: 0.72rem;
}

.ledger-row strong {
  color: white;
  font-weight: 600;
}

.principle-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.2rem;
}

.principle {
  padding: 1.6rem 0;
  border-top: 2px solid var(--ink);
}

.principle:nth-child(2) {
  border-color: var(--rust);
}

.principle:nth-child(3) {
  border-color: var(--blue);
}

.principle h3 {
  margin: 0;
  font-family: var(--serif);
  font-size: 1.55rem;
  font-weight: 500;
}

.principle p {
  color: var(--ink-soft);
}

.page {
  width: min(calc(100% - 2rem), var(--max));
  margin-inline: auto;
  padding-block: clamp(3.5rem, 7vw, 6.5rem);
}

.page-intro {
  max-width: 68rem;
  margin-bottom: clamp(2.5rem, 6vw, 5rem);
}

.page-intro h1 {
  font-size: clamp(4rem, 9vw, 8rem);
}

.page-lede {
  max-width: 52rem;
  margin-top: 2rem;
  color: var(--ink-soft);
  font-family: var(--serif);
  font-size: clamp(1.25rem, 2vw, 1.65rem);
  line-height: 1.45;
}

.page-lede p {
  margin: 0;
}

.directory-intro {
  margin-bottom: 2rem;
}

.search-panel {
  position: relative;
  margin-bottom: 1.3rem;
  border: 1px solid var(--line);
  border-radius: 1.35rem;
  background: color-mix(in srgb, var(--paper-pale) 76%, transparent);
  padding: 1.25rem;
  box-shadow: var(--shadow);
}

.search-label {
  display: block;
  margin: 0 0 0.55rem;
  font-size: 0.8rem;
  font-weight: 700;
}

.search-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 0.75rem;
}

.search-input {
  width: 100%;
  min-height: 58px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: var(--paper-pale);
  padding: 0 1.25rem;
  font-family: var(--serif);
  font-size: 1.1rem;
}

.search-input::placeholder {
  color: #8b786a;
}

.quick-starts {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  margin-top: 1rem;
  gap: 0.5rem;
}

.quick-label {
  margin-right: 0.35rem;
  color: var(--ink-soft);
  font-family: var(--mono);
  font-size: 0.67rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.chip-button {
  min-height: 36px;
  padding: 0.35rem 0.72rem;
  background: var(--paper-pale);
  font-size: 0.76rem;
  font-weight: 500;
}

.scope-tabs {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  margin: 1.8rem 0 0;
  border: 1px solid var(--line);
  border-radius: 1rem;
  overflow: hidden;
}

.scope-tab {
  min-height: 78px;
  border: 0;
  border-right: 1px solid var(--line);
  background: transparent;
  padding: 0.75rem;
  text-align: left;
}

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

.scope-tab strong,
.scope-tab span {
  display: block;
}

.scope-tab strong {
  font-size: 0.86rem;
}

.scope-tab span {
  margin-top: 0.15rem;
  color: var(--ink-soft);
  font-size: 0.72rem;
}

.scope-tab[aria-pressed="true"] {
  background: var(--ink);
  color: white;
}

.scope-tab[aria-pressed="true"] span {
  color: #d7c9be;
}

.directory-layout {
  display: grid;
  grid-template-columns: 17rem minmax(0, 1fr);
  align-items: start;
  gap: 2rem;
  margin-top: 2rem;
}

.filters {
  position: sticky;
  top: 96px;
  border-top: 1px solid var(--ink);
  padding-top: 1rem;
}

.filter-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.filter-head h2 {
  margin: 0;
  font-family: var(--serif);
  font-size: 1.4rem;
  font-weight: 500;
}

.filter-group {
  margin-top: 1.15rem;
}

.filter-group label {
  display: block;
  margin-bottom: 0.4rem;
  color: var(--ink-soft);
  font-family: var(--mono);
  font-size: 0.67rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.filter-select {
  width: 100%;
  min-height: 44px;
  border: 1px solid var(--line);
  border-radius: 0.6rem;
  background: var(--paper-pale);
  padding: 0.55rem 2rem 0.55rem 0.7rem;
  font-size: 0.82rem;
}

.research-toggle {
  display: flex;
  width: 100%;
  min-height: 44px;
  align-items: center;
  justify-content: space-between;
  margin-top: 1.3rem;
  border: 1px solid var(--line);
  border-radius: 0.7rem;
  background: transparent;
  padding: 0.6rem 0.75rem;
  font-size: 0.78rem;
  font-weight: 650;
  text-align: left;
}

.research-toggle[aria-expanded="true"] {
  border-color: var(--rust);
  color: var(--rust-dark);
}

.advanced-filters {
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--line);
}

.results {
  min-width: 0;
}

.results-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
  gap: 1rem;
}

.result-count {
  margin: 0;
  font-family: var(--serif);
  font-size: 1.25rem;
}

.result-count strong {
  font-size: 1.55rem;
  font-weight: 500;
}

.view-tools {
  display: flex;
  align-items: center;
  gap: 0.45rem;
}

.view-tools select {
  min-height: 38px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: transparent;
  padding: 0.4rem 1.8rem 0.4rem 0.75rem;
  font-size: 0.75rem;
}

.view-button {
  min-width: 38px;
  min-height: 38px;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: transparent;
  font-size: 0.75rem;
}

.view-button[aria-pressed="true"] {
  border-color: var(--ink);
  background: var(--ink);
  color: white;
}

.active-filters {
  display: flex;
  flex-wrap: wrap;
  margin: -0.2rem 0 1rem;
  gap: 0.4rem;
}

.active-chip {
  display: inline-flex;
  min-height: 32px;
  align-items: center;
  border: 1px solid var(--rust);
  border-radius: 999px;
  background: transparent;
  padding: 0.25rem 0.65rem;
  color: var(--rust-dark);
  font-size: 0.72rem;
}

.result-list {
  border-top: 1px solid var(--ink);
}

.result-row {
  display: grid;
  grid-template-columns: 2.8rem minmax(0, 1fr) minmax(10rem, 0.3fr) auto;
  align-items: start;
  min-height: 150px;
  gap: 1.25rem;
  padding: 1.45rem 0.4rem;
  border-bottom: 1px solid var(--line);
}

.result-index {
  padding-top: 0.35rem;
  color: var(--rust);
  font-family: var(--mono);
  font-size:0.72rem;
}

.result-main h2 {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(1.45rem, 2.5vw, 2.05rem);
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.12;
}

.result-main h2 a {
  text-decoration: none;
}

.result-main h2 a:hover {
  color: var(--rust);
  text-decoration: underline;
}

.result-role {
  display: -webkit-box;
  max-width: 48rem;
  margin: 0.6rem 0 0;
  overflow: hidden;
  color: var(--ink-soft);
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
  font-size: 0.9rem;
  line-height: 1.5;
}

.badges {
  display: flex;
  flex-wrap: wrap;
  margin-top: 0.8rem;
  gap: 0.35rem;
}

.badge {
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--paper-pale);
  padding: 0.22rem 0.55rem;
  color: var(--ink-soft);
  font-family: var(--mono);
  font-size: 0.61rem;
  letter-spacing: 0.03em;
  line-height: 1.35;
  text-transform: uppercase;
}

.badge.verified {
  border-color: color-mix(in srgb, var(--moss) 65%, white);
  color: var(--moss);
}

.badge.book {
  border-color: color-mix(in srgb, var(--blue) 55%, white);
  color: var(--blue);
}

.result-meta {
  color: var(--ink-soft);
  font-size: 0.77rem;
}

.result-meta strong,
.result-meta span {
  display: block;
}

.result-meta strong {
  margin-bottom: 0.35rem;
  color: var(--ink);
  font-weight: 600;
}

.result-actions {
  display: grid;
  min-width: 7rem;
  gap: 0.45rem;
}

.result-actions a {
  min-height: 38px;
}

.empty-state {
  padding: 4rem 1rem;
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--line);
  text-align: center;
}

.empty-state h2 {
  margin: 0;
  font-family: var(--serif);
  font-size: 2rem;
  font-weight: 500;
}

.load-more {
  display: flex;
  justify-content: center;
  padding: 2rem 0 0;
}

.data-table-wrap {
  overflow-x: auto;
  border-top: 1px solid var(--ink);
}

.data-table {
  width: 100%;
  min-width: 750px;
  border-collapse: collapse;
  font-size: 0.78rem;
}

.data-table th,
.data-table td {
  padding: 0.85rem 0.7rem;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.data-table th {
  color: var(--ink-soft);
  font-family: var(--mono);
  font-size:0.72rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.data-table td:first-child {
  color: var(--rust);
  font-family: var(--mono);
}

.data-table a {
  font-weight: 600;
}

.book-explorer {
  margin-top: 2rem;
}

.tab-list {
  display: flex;
  overflow-x: auto;
  border-bottom: 1px solid var(--line);
  gap: 0.2rem;
}

.tab-button {
  flex: none;
  min-height: 48px;
  border: 0;
  border-bottom: 3px solid transparent;
  background: transparent;
  padding: 0.6rem 1rem;
  color: var(--ink-soft);
  font-size: 0.82rem;
}

.tab-button[aria-pressed="true"] {
  border-color: var(--rust);
  color: var(--ink);
  font-weight: 700;
}

.explorer-toolbar {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  margin: 1.5rem 0;
  gap: 1rem;
}

.explorer-toolbar .search-input {
  min-height: 50px;
}

.download-menu {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.4rem;
}

.compact-table .data-table td {
  max-width: 28rem;
}

.url-cell a {
  overflow-wrap: anywhere;
}

.definition-cell {
  color: var(--ink-soft);
  line-height: 1.5;
}

.entity-page {
  padding-top: 2.5rem;
}

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  margin-bottom: 3rem;
  gap: 0.4rem;
  color: var(--ink-soft);
  font-family: var(--mono);
  font-size: 0.67rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.breadcrumbs span {
  color: var(--line-strong);
}

.entity-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 19rem;
  align-items: end;
  padding-bottom: 3rem;
  border-bottom: 1px solid var(--ink);
  gap: 2rem;
}

.record-id {
  margin: 0 0 1rem;
  color: var(--rust);
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.entity-hero h1 {
  max-width: 58rem;
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(3.4rem, 7vw, 7rem);
  font-weight: 400;
  letter-spacing: -0.05em;
  line-height: 0.92;
}

.entity-summary {
  max-width: 48rem;
  margin: 1.7rem 0 0;
  color: var(--ink-soft);
  font-size: 1.08rem;
}

.entity-actions {
  display: grid;
  gap: 0.6rem;
}

.entity-actions .button {
  width: 100%;
}

.entity-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 18rem;
  align-items: start;
  gap: 4rem;
  padding-top: 3rem;
}

.entity-section {
  padding: 1rem 0 3.5rem;
  border-bottom: 1px solid var(--line);
}

.entity-section:last-child {
  border-bottom: 0;
}

.entity-section h2 {
  margin-bottom: 1.5rem;
  font-size: clamp(2rem, 4vw, 3.25rem);
}

.entity-section h3 {
  margin: 1.8rem 0 0.35rem;
  font-family: var(--serif);
  font-size: 1.4rem;
  font-weight: 500;
}

.entity-section p {
  max-width: 48rem;
}

.fact-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  border-top: 1px solid var(--line);
}

.fact {
  min-height: 120px;
  padding: 1.15rem 1rem 1.15rem 0;
  border-bottom: 1px solid var(--line);
}

.fact:nth-child(odd) {
  border-right: 1px solid var(--line);
  padding-right: 1.4rem;
}

.fact:nth-child(even) {
  padding-left: 1.4rem;
}

.fact dt {
  color: var(--ink-soft);
  font-family: var(--mono);
  font-size:0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.fact dd {
  margin: 0.45rem 0 0;
  font-size: 0.9rem;
}

.source-list,
.related-list,
.plain-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.source-list li,
.related-list li {
  padding: 0.9rem 0;
  border-bottom: 1px solid var(--line);
}

.source-list a {
  overflow-wrap: anywhere;
}

.source-note {
  display: block;
  margin-top: 0.3rem;
  color: var(--ink-soft);
  font-size: 0.76rem;
}

.related-list a {
  display: block;
  font-family: var(--serif);
  font-size: 1.15rem;
  font-weight: 500;
}

.related-list span {
  display: block;
  margin-top: 0.2rem;
  color: var(--ink-soft);
  font-size: 0.75rem;
}

.record-aside {
  position: sticky;
  top: 100px;
}

.record-card {
  padding: 1.3rem;
  border: 1px solid var(--line);
  border-radius: 1rem;
  background: var(--paper-pale);
}

.record-card + .record-card {
  margin-top: 1rem;
}

.record-card h2 {
  margin: 0;
  font-family: var(--serif);
  font-size: 1.35rem;
  font-weight: 500;
}

.record-card p {
  margin: 0.8rem 0 0;
  color: var(--ink-soft);
  font-size: 0.78rem;
}

.signal-list {
  display: grid;
  margin-top: 1rem;
  padding: 0;
  gap: 0.55rem;
  list-style: none;
}

.signal {
  display: flex;
  align-items: flex-start;
  gap: 0.55rem;
  font-size: 0.76rem;
}

.signal strong {
  flex: none;
  color: var(--ink);
  font-family: var(--mono);
  font-size:0.72rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.signal span {
  color: var(--ink-soft);
}

.signal::before {
  width: 0.72rem;
  height: 0.72rem;
  flex: none;
  margin-top: 0.25rem;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  content: "";
}

.signal.on::before {
  border-color: var(--moss);
  background: var(--moss);
  box-shadow: inset 0 0 0 2px var(--paper-pale);
}

.signal.off {
  color: var(--ink-soft);
}

.timeline {
  position: relative;
  margin: 0;
  padding: 0 0 0 1.8rem;
  list-style: none;
}

.timeline::before {
  position: absolute;
  top: 0.5rem;
  bottom: 0.5rem;
  left: 0.35rem;
  width: 1px;
  background: var(--line-strong);
  content: "";
}

.timeline li {
  position: relative;
  padding: 0 0 1.7rem;
}

.timeline li::before {
  position: absolute;
  top: 0.45rem;
  left: -1.8rem;
  width: 0.75rem;
  height: 0.75rem;
  border: 2px solid var(--paper);
  border-radius: 50%;
  background: var(--rust);
  box-shadow: 0 0 0 1px var(--rust);
  content: "";
}

.timeline strong {
  display: block;
  font-family: var(--serif);
  font-size: 1.15rem;
}

.timeline span {
  color: var(--ink-soft);
  font-size: 0.85rem;
}

.method-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(17rem, 0.36fr);
  align-items: start;
  gap: 4rem;
}

.method-section {
  padding: 2.5rem 0 4rem;
  border-top: 1px solid var(--line);
}

.method-section:first-child {
  border-color: var(--ink);
}

.method-section h2 {
  margin-bottom: 1.5rem;
  font-size: clamp(2.3rem, 4.5vw, 4rem);
}

.method-section h3 {
  margin-top: 2rem;
  font-family: var(--serif);
  font-size: 1.5rem;
  font-weight: 500;
}

.method-section p,
.method-section li {
  max-width: 48rem;
  color: var(--ink-soft);
}

.method-section li + li {
  margin-top: 0.65rem;
}

.layer-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin-top: 2rem;
  border: 1px solid var(--line);
  border-radius: 1rem;
  overflow: hidden;
}

.layer {
  min-height: 210px;
  padding: 1.4rem;
  border-right: 1px solid var(--line);
  background: color-mix(in srgb, var(--paper-pale) 62%, transparent);
}

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

.layer strong {
  display: block;
  font-family: var(--serif);
  font-size: 1.35rem;
}

.layer p {
  font-size: 0.82rem;
}

.method-aside {
  position: sticky;
  top: 100px;
  padding: 1.4rem;
  border: 1px solid var(--line);
  border-radius: 1rem;
  background: var(--paper-pale);
}

.method-aside h2 {
  margin: 0;
  font-family: var(--serif);
  font-size: 1.5rem;
  font-weight: 500;
}

.method-aside nav {
  display: grid;
  margin-top: 1rem;
}

.method-aside a {
  padding: 0.55rem 0;
  border-bottom: 1px solid var(--line);
  font-size: 0.8rem;
}

.source-citations {
  font-size: 0.8rem;
}

.source-citations a {
  overflow-wrap: anywhere;
}

.contribute-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

.contribute-card {
  min-height: 260px;
  border: 1px solid var(--line);
  border-radius: 1rem;
  background: var(--paper-pale);
  padding: 1.6rem;
}

.contribute-card h2 {
  margin: 1.8rem 0 0;
  font-family: var(--serif);
  font-size: 2rem;
  font-weight: 500;
}

.contribute-card p {
  color: var(--ink-soft);
}

.governance-flow {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  margin-top: 2rem;
  border-block: 1px solid var(--line);
}

.flow-step {
  position: relative;
  min-height: 170px;
  padding: 1.4rem;
  border-right: 1px solid var(--line);
}

.flow-step:last-child {
  border-right: 0;
}

.flow-step span {
  color: var(--rust);
  font-family: var(--mono);
  font-size:0.72rem;
}

.flow-step strong {
  display: block;
  margin-top: 2.2rem;
  font-family: var(--serif);
  font-size: 1.35rem;
}

.flow-step p {
  color: var(--ink-soft);
  font-size: 0.78rem;
}

.site-footer {
  margin-top: 5rem;
  border-top: 1px solid var(--ink);
  background: var(--paper-deep);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  width: min(calc(100% - 2rem), var(--max));
  margin: auto;
  padding: 3.5rem 0;
  gap: 3rem;
}

.footer-name {
  margin: 0;
  font-family: var(--serif);
  font-size: 1.6rem;
}

.footer-grid p:not(.footer-name) {
  max-width: 31rem;
  color: var(--ink-soft);
  font-size: 0.84rem;
}

.footer-grid nav {
  display: grid;
  align-content: start;
  gap: 0.7rem;
}

.footer-grid nav a {
  font-size: 0.8rem;
}

.footer-base {
  display: flex;
  justify-content: space-between;
  width: min(calc(100% - 2rem), var(--max));
  margin: auto;
  padding: 1.1rem 0;
  border-top: 1px solid var(--line);
  color: var(--ink-soft);
  font-family: var(--mono);
  font-size:0.72rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

@media (max-width: 940px) {
  .site-header-inner {
    grid-template-columns: 1fr auto;
  }

  .primary-nav {
    order: 3;
    grid-column: 1 / -1;
    justify-content: flex-start;
    min-width: 0;
    overflow-x: auto;
    padding: 0 0 0.75rem;
  }

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

  .commons-map {
    width: min(100%, 420px);
  }

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

  .vertical-card {
    min-height: 300px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .vertical-card:last-child {
    border-bottom: 0;
  }

  .stats-band {
    grid-template-columns: repeat(3, 1fr);
  }

  .stat:nth-child(3) {
    border-right: 0;
  }

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

  .directory-layout,
  .entity-grid,
  .method-grid {
    grid-template-columns: 1fr;
  }

  .filters,
  .record-aside,
  .method-aside {
    position: static;
  }

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

  .filter-head,
  .research-toggle,
  .advanced-filters {
    grid-column: 1 / -1;
  }

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

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

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

  .footer-grid > :first-child {
    grid-column: 1 / -1;
  }
}

@media (max-width: 700px) {
  body {
    font-size: 15px;
  }

  .site-header-inner {
    width: min(calc(100% - 1.2rem), var(--max));
  }

  .site-brand {
    font-size: 1rem;
  }

  .seminar-link {
    font-size:0.72rem;
  }

  .primary-nav {
    gap: 1rem;
  }

  .shell,
  .page {
    width: min(calc(100% - 1.2rem), var(--max));
  }

  .home-hero {
    padding-top: 4rem;
  }

  .hero-copy h1,
  .page-intro h1 {
    font-size: clamp(3.65rem, 20vw, 5.7rem);
  }

  .commons-map {
    scale: 0.92;
  }

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

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

  .stat:nth-child(1),
  .stat:nth-child(2) {
    border-top: 0;
  }

  .stat:nth-child(2n) {
    border-right: 0;
  }

  .stat:last-child {
    grid-column: 1 / -1;
  }

  .section-head,
  .backbone-panel {
    grid-template-columns: 1fr;
  }

  .backbone-ledger {
    border-top: 1px solid #735c4e;
    border-left: 0;
  }

  .intent-grid,
  .collection-grid,
  .principle-grid,
  .contribute-grid {
    grid-template-columns: 1fr;
  }

  .search-row {
    grid-template-columns: 1fr;
  }

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

  .scope-tab:nth-child(2) {
    border-right: 0;
  }

  .scope-tab:nth-child(-n + 2) {
    border-bottom: 1px solid var(--line);
  }

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

  .filter-head,
  .research-toggle,
  .advanced-filters {
    grid-column: auto;
  }

  .results-head {
    align-items: flex-start;
    flex-direction: column;
  }

  .result-row {
    grid-template-columns: 2rem minmax(0, 1fr);
    gap: 0.8rem;
  }

  .result-meta,
  .result-actions {
    grid-column: 2;
  }

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

  .explorer-toolbar {
    grid-template-columns: 1fr;
  }

  .download-menu {
    justify-content: flex-start;
  }

  .fact-grid,
  .layer-grid {
    grid-template-columns: 1fr;
  }

  .fact:nth-child(odd) {
    border-right: 0;
  }

  .fact:nth-child(even) {
    padding-left: 0;
  }

  .layer {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .layer:last-child {
    border-bottom: 0;
  }

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

  .governance-flow {
    grid-template-columns: 1fr;
  }

  .flow-step {
    min-height: 140px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .flow-step:last-child {
    border-bottom: 0;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    padding: 2.5rem 0;
    gap: 2rem;
  }

  .footer-grid > :first-child {
    grid-column: auto;
  }

  .footer-base {
    align-items: flex-start;
    flex-direction: column;
    gap: 0.5rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.001ms !important;
  }
}

@media (forced-colors: active) {
  .button.primary,
  .scope-tab[aria-pressed="true"],
  .view-button[aria-pressed="true"],
  .map-node.core {
    border: 2px solid ButtonText;
  }

  .badge,
  .button,
  .chip-button,
  .search-panel,
  .record-card,
  .method-aside {
    border-color: CanvasText;
  }
}

@media print {
  .site-header,
  .site-footer,
  .filters,
  .view-tools,
  .button-row,
  .quick-starts,
  .load-more {
    display: none !important;
  }

  body {
    background: white;
    color: #111;
  }

  .page,
  .shell {
    width: 100%;
  }

  .directory-layout,
  .entity-grid {
    grid-template-columns: 1fr;
  }

  .result-row {
    break-inside: avoid;
  }
}