:root {
  color-scheme: light;
  --bg: #ffffff;
  --ink: #15171a;
  --muted: #626a73;
  --soft: #f5f7f8;
  --line: #d9dee3;
  --accent: #0f766e;
  --accent-soft: #e8f3f1;
  --mono: ui-monospace, SFMono-Regular, Menlo, monospace;
  --sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.62 var(--sans);
  overflow-x: hidden;
  text-rendering: optimizeLegibility;
}

a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.16em;
}

a:hover {
  color: #0b5f59;
}

.site-header,
.browse-bar,
.site-main,
.site-footer {
  width: min(calc(100% - 40px), 820px);
  margin: 0 auto;
}

.site-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 32px;
  padding: 28px 0 18px;
  border-bottom: 1px solid var(--line);
}

.site-mark {
  display: inline-flex;
  flex-direction: column;
  color: var(--ink);
  text-decoration: none;
}

.site-mark:hover {
  color: var(--ink);
  text-decoration: none;
}

.site-name {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0;
}

.site-tagline {
  color: var(--muted);
  font-size: 14px;
  margin-top: 10px;
}

.site-nav {
  display: flex;
  gap: 30px;
  flex-wrap: wrap;
  justify-content: flex-end;
  margin-top: 0;
  font-size: 14px;
}

.site-nav a,
.browse-bar a {
  text-decoration: none;
}

.site-nav a:hover,
.site-nav a:focus,
.browse-bar a:hover,
.browse-bar a:focus {
  text-decoration: underline;
}

.browse-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
}

.browse-bar span {
  color: var(--muted);
}

.site-main {
  padding: 52px 0 64px;
}

.site-footer {
  padding: 24px 0 36px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
}

.eyebrow {
  color: var(--muted);
  font-size: 14px;
  margin: 0 0 8px;
}

.kind {
  display: inline-block;
  border-radius: 4px;
  background: var(--accent-soft);
  color: #245f59;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  line-height: 1;
  padding: 6px 8px;
  text-transform: uppercase;
}

.meta-pill {
  display: inline-block;
  border-radius: 999px;
  background: var(--soft);
  color: var(--muted);
  font-size: 12px;
  font-weight: 600;
  line-height: 1;
  margin-left: 6px;
  padding: 4px 7px;
  vertical-align: 0.12em;
}

h1 {
  margin: 10px 0 14px;
  font-size: clamp(36px, 7vw, 42px);
  line-height: 1.08;
  letter-spacing: 0;
}

h2 {
  margin: 38px 0 10px;
  color: #4b5560;
  font-size: 12px;
  font-weight: 750;
  letter-spacing: 0.11em;
  line-height: 1.3;
  text-transform: uppercase;
}

p {
  margin: 0 0 16px;
}

.definition {
  max-width: min(760px, 100%);
  margin-top: 18px;
  color: #202327;
  font-size: clamp(19px, 3vw, 21px);
  line-height: 1.52;
}

.canonical-line {
  margin: -4px 0 24px;
  color: var(--muted);
  font-size: 14px;
}

.section {
  margin-top: 32px;
}

.relation-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 26px 48px;
  margin-top: 34px;
}

.relation-section {
  margin-top: 0;
}

.relation-section h2 {
  margin-top: 0;
}

.inline-list,
.link-list,
.collection-list,
.result-list,
.mapping-list,
.identity-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.not-equivalent-list {
  margin: 0;
  padding-left: 1.15em;
}

.inline-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 12px;
}

.inline-list li:not(:last-child)::after {
  content: "·";
  color: var(--muted);
  margin-left: 12px;
}

.link-list li,
.not-equivalent-list li,
.mapping-list li {
  margin: 7px 0;
}

.identity-list {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(180px, 0.8fr) minmax(180px, 0.8fr);
  gap: 24px 40px;
}

.identity-panel {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fafbfb;
  padding: 22px 24px 24px;
}

.identity-panel h2 {
  margin-top: 0;
}

.identity-list li {
  margin: 0;
}

.identity-list li:first-child {
  grid-column: 1 / -1;
}

.relation-note {
  color: var(--muted);
}

.arrow-link {
  text-decoration: none;
}

.arrow-link::before {
  content: "→ ";
  color: var(--muted);
}

.muted {
  color: var(--muted);
}

.rule {
  margin: 42px 0 24px;
  border: 0;
  border-top: 1px solid var(--line);
}

code,
.id-value {
  font-family: var(--mono);
  font-size: 0.95em;
}

.id-value {
  max-width: 100%;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.machine-links {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.home-title {
  margin-top: 0;
}

.home-lede {
  max-width: 700px;
  color: #2d3238;
  font-size: 20px;
  line-height: 1.55;
}

.search {
  margin: 34px 0 30px;
}

.search input {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 6px;
  color: var(--ink);
  font: 16px/1.4 var(--sans);
  padding: 13px 14px;
}

.search input:focus {
  border-color: var(--accent);
  outline: 3px solid var(--accent-soft);
}

.result-list {
  margin-top: 14px;
}

.result-list li,
.collection-list li {
  border-top: 1px solid var(--line);
  padding: 12px 0;
}

.result-list a,
.collection-list a {
  font-weight: 600;
}

.browse-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
}

.collection-meta {
  color: var(--muted);
  font-size: 14px;
}

.collection-description {
  max-width: 720px;
  color: #2d3238;
  font-size: 18px;
  line-height: 1.55;
}

@media (max-width: 560px) {
  .site-header,
  .browse-bar,
  .site-main,
  .site-footer {
    width: min(calc(100% - 28px), 820px);
  }

  .site-main {
    padding-top: 40px;
  }

  .site-header {
    display: block;
  }

  .site-nav {
    justify-content: flex-start;
    margin-top: 18px;
  }

  .canonical-line .id-value {
    display: block;
    margin-top: 2px;
  }

  .identity-list {
    display: block;
  }

  .identity-list li {
    margin: 12px 0;
  }

  .identity-panel {
    padding: 18px 18px 20px;
  }

  .relation-grid {
    display: block;
  }

  .relation-section {
    margin-top: 32px;
  }
}