:root {
  --bg: #f6f4ef;
  --surface: #ffffff;
  --surface-soft: #fbfaf7;
  --ink: #17202a;
  --muted: #5a6472;
  --line: #d9ddd7;
  --accent: #1d6f7a;
  --accent-strong: #124d56;
  --accent-soft: #dcecef;
  --green: #496f38;
  --red: #9d4436;
  --gold: #98711d;
  --shadow: 0 18px 48px rgba(28, 41, 53, 0.1);
  --radius: 8px;
  --content: 980px;
  --text: 720px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: Arial, Helvetica, ui-sans-serif, system-ui, sans-serif;
  line-height: 1.6;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  content: "";
  background:
    linear-gradient(90deg, rgba(23, 32, 42, 0.035) 1px, transparent 1px),
    linear-gradient(180deg, rgba(23, 32, 42, 0.026) 1px, transparent 1px);
  background-size: 42px 42px;
}

a {
  color: var(--accent-strong);
  text-decoration: none;
}

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

img {
  display: block;
  max-width: 100%;
}

figure {
  margin: 0;
}

code,
pre {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 64px;
  padding: 12px clamp(18px, 4vw, 56px);
  border-bottom: 1px solid rgba(23, 32, 42, 0.1);
  background: rgba(246, 244, 239, 0.92);
  backdrop-filter: blur(14px);
}

.brand {
  display: inline-flex;
  align-items: center;
  flex: 0 0 auto;
  gap: 10px;
  color: var(--ink);
  font-weight: 750;
  text-decoration: none;
}

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

.brand-mark {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  border: 1px solid var(--accent);
  border-radius: 6px;
  color: var(--accent-strong);
  font-size: 0.78rem;
  letter-spacing: 0;
}

.site-nav {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  flex-wrap: wrap;
  gap: 6px;
}

.site-nav a {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 6px 10px;
  border-radius: 6px;
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 650;
  text-decoration: none;
}

.site-nav a:hover,
.site-nav a.active {
  background: var(--accent-soft);
  color: var(--accent-strong);
}

.section-band {
  width: 100%;
  padding: clamp(56px, 8vw, 96px) clamp(18px, 4vw, 56px);
}

.section-band.alt {
  background: rgba(255, 255, 255, 0.48);
  border-block: 1px solid rgba(23, 32, 42, 0.08);
}

.hero {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: auto;
  height: auto;
  padding-top: clamp(46px, 7vw, 78px);
  padding-bottom: 24px;
}

.introduction {
  padding-top: 24px;
}

.hero-content,
.hero-figure,
.section-heading,
.taxonomy-layout,
.wide-figure,
.paradigm-grid,
.resource-grid,
.citation-box,
.definition-grid,
.introduction-flow {
  max-width: var(--content);
  margin-inline: auto;
  min-width: 0;
}

.hero-content {
  width: min(100%, var(--content));
  max-width: var(--content);
  margin-inline: auto;
}

.eyebrow,
.kicker {
  margin: 0 0 12px;
  color: var(--red);
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

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

h1,
h2,
.taxonomy-title {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

h1 {
  margin-bottom: 20px;
  max-width: 850px;
  font-size: clamp(2.05rem, 3.1vw, 2.5rem);
  line-height: 1.18;
  letter-spacing: 0;
  overflow-wrap: break-word;
}

h2 {
  margin-bottom: 14px;
  font-size: clamp(1.65rem, 2.5vw, 2rem);
  line-height: 1.2;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  font-size: clamp(1.25rem, 1.8vw, 1.5rem);
  line-height: 1.25;
  letter-spacing: 0;
}

h4 {
  margin: 0 0 10px;
  font-size: 1.08rem;
  line-height: 1.3;
}

.subtitle {
  max-width: 680px;
  color: #324150;
  font-size: clamp(0.92rem, 1.05vw, 1rem);
  overflow-wrap: break-word;
}

.authors {
  margin: 24px 0;
  color: var(--muted);
}

.authors p {
  margin-bottom: 4px;
}

.authors strong {
  color: var(--ink);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 10px 14px;
  border: 1px solid rgba(18, 77, 86, 0.26);
  border-radius: 7px;
  background: var(--surface);
  color: var(--accent-strong);
  font-size: 0.95rem;
  font-weight: 750;
  line-height: 1.1;
  text-decoration: none;
  cursor: pointer;
}

.button:hover {
  border-color: var(--accent);
  background: var(--accent-soft);
  color: var(--accent-strong);
  text-decoration: none;
}

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

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

.hero-figure {
  overflow: hidden;
  border: 1px solid rgba(23, 32, 42, 0.12);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.hero-figure img {
  width: 100%;
  height: auto;
  background: #ffffff;
}

figcaption {
  padding: 14px 16px;
  color: var(--muted);
  font-size: 0.9rem;
}

.section-heading {
  max-width: var(--content);
  margin-bottom: clamp(28px, 5vw, 46px);
  text-align: left;
}

.section-heading.narrow {
  max-width: var(--content);
}

.section-heading p:not(.eyebrow) {
  color: var(--muted);
  font-size: 1.05rem;
}

.definition-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.definition-card,
.paradigm-card,
.resource-card {
  border: 1px solid rgba(23, 32, 42, 0.12);
  border-radius: var(--radius);
  background: var(--surface);
}

.definition-card {
  padding: 24px;
}

.definition-card p,
.paradigm-card p,
.resource-card p {
  color: var(--muted);
}

.formula {
  margin: 18px 0 0;
  padding: 13px 14px;
  border-left: 3px solid var(--accent);
  background: var(--surface-soft);
  color: var(--ink) !important;
  font-size: 1.32rem;
  line-height: 1.6;
  letter-spacing: 0;
  white-space: nowrap;
  overflow-x: auto;
}

.formula math {
  font-family: "STIX Two Math", "Cambria Math", "Latin Modern Math", "Times New Roman", serif;
  font-size: 1em;
  math-style: normal;
}

.introduction-flow {
  display: grid;
  gap: clamp(28px, 5vw, 52px);
}

.introduction-block {
  display: grid;
  gap: 22px;
  padding: clamp(22px, 4vw, 38px);
  border: 1px solid rgba(23, 32, 42, 0.12);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: 0 12px 34px rgba(28, 41, 53, 0.07);
}

.introduction-copy {
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  gap: 18px;
  align-items: start;
  max-width: 900px;
}

.introduction-copy .step-number {
  grid-row: auto;
}

.introduction-copy p,
.policy-row p,
.wam-callout p {
  color: var(--muted);
}

.introduction-copy p:last-child,
.policy-row p:last-child,
.wam-callout p:last-of-type {
  margin-bottom: 0;
}

.introduction-figure {
  width: min(100%, 720px);
  margin-inline: auto;
  overflow: hidden;
  border: 0;
  border-radius: 0;
  background: #ffffff;
}

.introduction-figure img {
  width: 100%;
  height: auto;
}

.introduction-figure.compact {
  width: min(100%, 680px);
  max-width: 720px;
  margin-inline: auto;
}

.introduction-figure.wide {
  width: min(100%, 760px);
}

.policy-row,
.examples-row {
  display: grid;
  grid-template-columns: minmax(0, 560px) minmax(280px, 420px);
  justify-content: center;
  gap: 24px;
  align-items: start;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.examples-row {
  grid-template-columns: minmax(0, 520px) minmax(280px, 400px);
}

.policy-row .introduction-figure,
.examples-row .introduction-figure {
  width: 100%;
}

.wam-callout {
  padding: 20px;
  border-left: 4px solid var(--accent);
  background: var(--surface-soft);
}

.wam-callout .eyebrow {
  color: var(--accent-strong);
}

.text-link {
  font-weight: 750;
}

.taxonomy-layout {
  display: grid;
  gap: clamp(34px, 6vw, 70px);
}

.taxonomy-intro {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  max-width: var(--content);
  margin: 0 auto clamp(32px, 5vw, 54px);
}

.taxonomy-intro article {
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  gap: 14px 18px;
  align-items: start;
  padding: 22px;
  border: 1px solid rgba(23, 32, 42, 0.12);
  border-radius: var(--radius);
  background: var(--surface);
}

.taxonomy-intro h3,
.taxonomy-intro p {
  grid-column: 2;
}

.taxonomy-intro h3 {
  margin-bottom: 4px;
  white-space: nowrap;
}

.taxonomy-intro p {
  margin-bottom: 0;
  color: var(--muted);
}

.step-number {
  grid-row: 1 / span 2;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 6px;
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-weight: 850;
}

.design-feature {
  display: grid;
  gap: 20px;
  min-width: 0;
}

.taxonomy-subheading {
  max-width: var(--text);
}

.taxonomy-subheading p:not(.kicker) {
  color: var(--muted);
  font-size: 1.05rem;
}

.taxonomy-title {
  margin-bottom: 8px;
  font-size: clamp(1.3rem, 1.8vw, 1.5rem);
  line-height: 1.2;
}

#design-title,
.taxonomy-intro h3,
.taxonomy-title {
  white-space: nowrap;
}

.taxonomy-caption {
  margin-bottom: 14px;
  color: var(--accent-strong) !important;
  font-weight: 750;
}

.panel-copy {
  max-width: 590px;
  min-width: 0;
}

.plain-list {
  display: grid;
  gap: 10px;
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
}

.plain-list li {
  padding-left: 14px;
  border-left: 3px solid var(--gold);
  color: var(--muted);
}

.figure-panel,
.wide-figure {
  width: min(100%, 760px);
  margin-inline: auto;
  overflow: hidden;
  border: 0;
  border-radius: 0;
  background: var(--surface);
  box-shadow: none;
  min-width: 0;
}

.figure-panel img,
.wide-figure img {
  width: 100%;
  height: auto;
  background: #ffffff;
}

.wide-figure {
  margin-bottom: 24px;
}

.paradigm-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.paradigm-card {
  padding: 22px;
}

.tag,
.resource-type,
.resource-year {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  min-height: 26px;
  padding: 4px 8px;
  border-radius: 5px;
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-size: 0.78rem;
  font-weight: 800;
  line-height: 1.1;
}

.tag {
  margin-bottom: 16px;
}

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  max-width: var(--content);
  margin: 0 auto 22px;
}

.filter-button {
  min-height: 38px;
  padding: 8px 12px;
  border: 1px solid rgba(23, 32, 42, 0.14);
  border-radius: 7px;
  background: var(--surface);
  color: var(--muted);
  font: inherit;
  font-size: 0.92rem;
  font-weight: 750;
  cursor: pointer;
}

.filter-button:hover,
.filter-button.active {
  border-color: var(--accent-strong);
  background: var(--accent-strong);
  color: #ffffff;
}

.resource-grid {
  display: grid;
  gap: 8px;
}

.resource-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 14px;
  align-items: start;
  min-height: 0;
  padding: 14px 16px;
  min-width: 0;
}

.resource-card.hidden {
  display: none;
}

.resource-card h3 {
  margin: 0;
  font-size: 1rem;
}

.resource-card p {
  margin-bottom: 18px;
  font-size: 0.95rem;
}

.resource-main {
  display: grid;
  grid-template-columns: 58px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  min-width: 0;
}

.resource-main h3 {
  min-width: 0;
}

.resource-tags {
  display: flex;
  justify-content: flex-end;
  flex-wrap: wrap;
  gap: 6px;
  max-width: 420px;
}

.resource-error {
  margin: 0;
  padding: 18px;
  border: 1px solid rgba(23, 32, 42, 0.12);
  border-radius: var(--radius);
  background: var(--surface);
}

.resource-type {
  background: rgba(73, 111, 56, 0.14);
  color: var(--green);
}

.citation-box {
  position: relative;
  max-width: 880px;
  border: 1px solid rgba(23, 32, 42, 0.12);
  border-radius: var(--radius);
  background: #111820;
  box-shadow: var(--shadow);
}

.copy-button {
  position: absolute;
  top: 14px;
  right: 14px;
  border-color: rgba(255, 255, 255, 0.28);
  background: rgba(255, 255, 255, 0.08);
  color: #ffffff;
}

.copy-button:hover {
  background: rgba(255, 255, 255, 0.16);
  color: #ffffff;
}

.citation-box pre {
  margin: 0;
  padding: 72px 22px 22px;
  overflow-x: auto;
  color: #e7edf4;
  font-size: 0.92rem;
  line-height: 1.55;
}

.contact-band {
  padding-block: clamp(42px, 6vw, 72px);
}

.contact-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 24px;
  align-items: center;
  max-width: var(--content);
  margin-inline: auto;
  padding: clamp(24px, 4vw, 36px);
  border: 1px solid rgba(23, 32, 42, 0.12);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: 0 12px 34px rgba(28, 41, 53, 0.08);
}

.contact-panel h2 {
  margin-bottom: 10px;
  font-size: clamp(1.55rem, 2.2vw, 1.9rem);
}

.contact-panel p:not(.eyebrow) {
  max-width: 760px;
  margin-bottom: 0;
  color: var(--muted);
}

.site-footer {
  padding: 30px clamp(18px, 4vw, 56px);
  border-top: 1px solid rgba(23, 32, 42, 0.1);
  color: var(--muted);
  text-align: center;
}

.site-footer p {
  margin: 0;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

@media (max-width: 1060px) {
  .hero,
  .taxonomy-intro {
    grid-template-columns: 1fr;
  }

  .hero-content,
  .hero-figure {
    margin-inline: auto;
    order: initial;
  }

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

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

@media (max-width: 760px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
    gap: 10px;
    min-height: 96px;
  }

  .site-nav {
    justify-content: flex-start;
  }

  .site-nav a {
    min-height: 32px;
    padding-inline: 8px;
    font-size: 0.84rem;
  }

  .hero {
    min-height: auto;
  }

  h1 {
    font-size: clamp(1.85rem, 8vw, 2.35rem);
    line-height: 1.1;
  }

  #design-title,
  .taxonomy-intro h3,
  .taxonomy-title {
    white-space: normal;
  }

  .definition-grid,
  .paradigm-grid {
    grid-template-columns: 1fr;
  }

  .introduction-copy,
  .policy-row,
  .examples-row {
    grid-template-columns: 1fr;
  }

  .introduction-copy {
    gap: 12px;
  }

  .introduction-block {
    padding: 18px;
  }

  .definition-card,
  .paradigm-card,
  .resource-card {
    padding: 18px;
  }

  .resource-card,
  .resource-main {
    grid-template-columns: 1fr;
  }

  .resource-tags {
    justify-content: flex-start;
    max-width: none;
  }

  .copy-button {
    position: static;
    margin: 14px 14px 0;
  }

  .citation-box pre {
    padding-top: 18px;
  }

  .contact-panel {
    grid-template-columns: 1fr;
  }

  .contact-panel .button {
    width: fit-content;
    max-width: 100%;
    overflow-wrap: anywhere;
  }
}