:root {
  --canvas: #f7f3e8;
  --paper: #fffdf8;
  --ink: #172926;
  --muted: #52645f;
  --green: #245b4b;
  --green-dark: #174337;
  --sea: #dde9e7;
  --clay: #a44b36;
  --clay-light: #f2ded6;
  --ochre: #f0d99b;
  --line: #c9d2cc;
  --shadow: 0 18px 48px rgb(23 41 38 / 10%);
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  --sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --measure: 68rem;
  --reading: 44rem;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 6rem;
}

body {
  margin: 0;
  background: var(--canvas);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 1.08rem;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
}

body::before {
  position: fixed;
  z-index: -1;
  inset: 0;
  background-image: radial-gradient(rgb(36 91 75 / 7%) 0.7px, transparent 0.7px);
  background-size: 9px 9px;
  content: "";
  opacity: 0.35;
  pointer-events: none;
}

img,
svg {
  display: block;
  height: auto;
  max-width: 100%;
}

a {
  color: var(--green-dark);
  text-decoration-color: rgb(36 91 75 / 45%);
  text-decoration-thickness: 0.1em;
  text-underline-offset: 0.18em;
}

a:hover {
  text-decoration-color: currentColor;
}

:focus-visible {
  outline: 3px solid var(--clay);
  outline-offset: 4px;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 0.75rem;
  left: 0.75rem;
  padding: 0.75rem 1rem;
  transform: translateY(-160%);
  border-radius: 999px;
  background: var(--ink);
  color: white;
}

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

.site-header {
  position: sticky;
  z-index: 20;
  top: 0;
  border-bottom: 1px solid rgb(23 41 38 / 12%);
  background: var(--canvas);
}

.nav-shell,
.section-shell,
.hero-shell,
.footer-shell {
  width: min(calc(100% - 2rem), var(--measure));
  margin-inline: auto;
}

.nav-shell {
  display: flex;
  min-height: 4.75rem;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.brand {
  display: inline-flex;
  align-items: baseline;
  gap: 0.65rem;
  color: var(--ink);
  text-decoration: none;
}

.brand-mark {
  font-family: var(--serif);
  font-size: 1.55rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.brand-byline {
  color: var(--muted);
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.nav-toggle {
  display: none;
  min-width: 2.75rem;
  min-height: 2.75rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--paper);
  color: var(--ink);
  font: inherit;
  font-weight: 700;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 1.35rem;
}

.site-nav a {
  color: var(--ink);
  font-size: 0.92rem;
  font-weight: 700;
  text-decoration: none;
}

.site-nav a[aria-current="page"],
.site-nav a:hover {
  color: var(--green);
}

.nav-cta {
  padding: 0.55rem 0.9rem;
  border: 1px solid var(--green);
  border-radius: 999px;
}

.eyebrow,
.status-label,
.card-kicker {
  margin: 0 0 0.7rem;
  color: var(--clay);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.hero {
  padding: clamp(3rem, 7vw, 7.5rem) 0 2.5rem;
}

.hero-shell {
  display: grid;
  align-items: center;
  gap: clamp(2rem, 5vw, 5rem);
  grid-template-columns: minmax(0, 0.85fr) minmax(25rem, 1.15fr);
}

.hero h1,
.page-hero h1,
.section-heading h2,
.article h2,
.callout h2 {
  margin: 0;
  font-family: var(--serif);
  font-weight: 650;
  letter-spacing: -0.025em;
  line-height: 1.06;
}

.hero h1 {
  max-width: 12ch;
  font-size: clamp(3.1rem, 6.4vw, 6.35rem);
}

.hero-lede {
  max-width: 38rem;
  margin: 1.5rem 0 0;
  color: var(--muted);
  font-family: var(--serif);
  font-size: clamp(1.25rem, 2.1vw, 1.6rem);
  line-height: 1.45;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 2rem;
}

.button {
  display: inline-flex;
  min-height: 3rem;
  align-items: center;
  justify-content: center;
  padding: 0.7rem 1.15rem;
  border: 1px solid var(--green);
  border-radius: 999px;
  font-size: 0.96rem;
  font-weight: 800;
  text-decoration: none;
}

.button-primary {
  background: var(--green);
  color: white;
}

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

.button-secondary {
  background: transparent;
  color: var(--green-dark);
}

.hero-figure {
  position: relative;
  margin: 0;
}

.hero-figure::before {
  position: absolute;
  z-index: -1;
  inset: -1rem 2rem 2rem -1rem;
  border-radius: 45% 55% 52% 48% / 48% 42% 58% 52%;
  background: var(--ochre);
  content: "";
}

.hero-figure img {
  width: 100%;
  height: auto !important;
  aspect-ratio: 3 / 2;
  border: 1px solid rgb(23 41 38 / 12%);
  border-radius: 46% 54% 49% 51% / 52% 42% 58% 48%;
  box-shadow: var(--shadow);
  object-fit: cover;
}

.truth-strip {
  width: min(calc(100% - 2rem), var(--measure));
  margin: 1rem auto 0;
  padding: 1rem 1.2rem;
  border: 1px solid var(--line);
  border-radius: 1rem;
  background: rgb(255 253 248 / 78%);
  color: var(--muted);
  font-size: 0.92rem;
}

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

.site-section {
  padding: clamp(4.5rem, 8vw, 8rem) 0;
}

.site-section.compact {
  padding-block: 3.25rem;
}

.site-section.paper {
  border-block: 1px solid rgb(23 41 38 / 10%);
  background: var(--paper);
}

.section-heading {
  max-width: 46rem;
  margin-bottom: 2.5rem;
}

.section-heading h2 {
  max-width: 17ch;
  font-size: clamp(2.35rem, 4.5vw, 4.25rem);
}

.section-heading p {
  max-width: 42rem;
  margin: 1rem 0 0;
  color: var(--muted);
  font-size: 1.12rem;
}

.path-grid,
.principle-grid,
.article-grid,
.status-grid,
.source-grid {
  display: grid;
  gap: 1.25rem;
}

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

.path-card,
.article-card,
.principle-card,
.status-card,
.source-card {
  border: 1px solid var(--line);
  border-radius: 1.15rem;
  background: var(--paper);
}

.path-card {
  display: flex;
  min-height: 17.5rem;
  flex-direction: column;
  padding: clamp(1.35rem, 3vw, 2rem);
  color: var(--ink);
  text-decoration: none;
  transition: transform 160ms ease, box-shadow 160ms ease;
}

.path-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.path-number {
  display: grid;
  width: 2.6rem;
  height: 2.6rem;
  margin-bottom: auto;
  place-items: center;
  border-radius: 50%;
  background: var(--sea);
  color: var(--green-dark);
  font-family: var(--serif);
  font-size: 1.25rem;
  font-weight: 700;
}

.path-card h3,
.article-card h3,
.principle-card h3,
.status-card h3,
.source-card h3 {
  margin: 1.5rem 0 0.5rem;
  font-family: var(--serif);
  font-size: 1.55rem;
  line-height: 1.2;
}

.path-card p,
.article-card p,
.principle-card p,
.status-card p,
.source-card p {
  margin: 0;
  color: var(--muted);
}

.path-link {
  margin-top: 1.25rem;
  color: var(--green-dark);
  font-weight: 800;
}

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

.principle-card,
.status-card {
  padding: 1.5rem;
}

.principle-card h3,
.status-card h3 {
  margin-top: 0;
}

.trust-layout {
  display: grid;
  align-items: start;
  gap: 3rem;
  grid-template-columns: minmax(0, 0.8fr) minmax(28rem, 1.2fr);
}

.trust-copy h2 {
  max-width: 13ch;
}

.diagram-card {
  overflow: hidden;
  margin: 0;
  border: 1px solid var(--line);
  border-radius: 1.25rem;
  background: var(--paper);
  box-shadow: var(--shadow);
}

.diagram-card img {
  width: 100%;
}

.diagram-card figcaption {
  padding: 1rem 1.25rem 1.25rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.91rem;
}

.plain-list {
  padding: 0;
  margin: 1.4rem 0 0;
  list-style: none;
}

.plain-list li {
  position: relative;
  padding: 0.75rem 0 0.75rem 1.6rem;
  border-bottom: 1px solid rgb(23 41 38 / 10%);
}

.plain-list li::before {
  position: absolute;
  top: 1.2rem;
  left: 0;
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 50%;
  background: var(--clay);
  content: "";
}

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

.article-card {
  display: flex;
  min-height: 16rem;
  flex-direction: column;
  padding: 1.4rem;
}

.article-card h3 {
  margin-top: 0;
}

.article-card a {
  margin-top: auto;
  padding-top: 1rem;
  font-weight: 800;
}

.status-card[data-status="built"] {
  border-top: 0.35rem solid var(--green);
}

.status-card[data-status="pilot"] {
  border-top: 0.35rem solid #c98917;
}

.status-card[data-status="direction"] {
  border-top: 0.35rem solid var(--clay);
}

.status-card .status-label {
  margin-bottom: 0.3rem;
}

.status-card[data-status="built"] .status-label {
  color: var(--green);
}

.status-card[data-status="pilot"] .status-label {
  color: #865900;
}

.callout {
  padding: clamp(2rem, 6vw, 4.5rem);
  border-radius: 1.5rem;
  background: var(--green-dark);
  color: white;
}

.callout h2 {
  max-width: 16ch;
  font-size: clamp(2.2rem, 4vw, 3.7rem);
}

.callout p {
  max-width: 43rem;
  color: rgb(255 255 255 / 78%);
}

.callout .button {
  border-color: white;
  background: white;
  color: var(--green-dark);
}

.page-hero {
  padding: clamp(4rem, 8vw, 8rem) 0 3rem;
}

.page-hero .section-shell {
  max-width: var(--reading);
  margin-left: max(1rem, calc((100% - var(--measure)) / 2));
}

.page-hero h1 {
  font-size: clamp(3rem, 6vw, 5.5rem);
}

.page-hero p {
  max-width: 40rem;
  color: var(--muted);
  font-family: var(--serif);
  font-size: clamp(1.2rem, 2vw, 1.5rem);
}

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  align-items: center;
  margin-bottom: 3rem;
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: 1rem;
  background: var(--paper);
}

.filter-bar strong {
  margin-right: 0.4rem;
  font-size: 0.92rem;
}

.filter-button {
  min-height: 2.75rem;
  padding: 0.55rem 0.95rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: transparent;
  color: var(--ink);
  font: inherit;
  font-size: 0.92rem;
  font-weight: 800;
}

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

.result-count {
  margin-left: auto;
  color: var(--muted);
  font-size: 0.88rem;
}

.article-list {
  display: grid;
  gap: 2rem;
  max-width: var(--reading);
  margin-inline: auto;
}

.article {
  scroll-margin-top: 6.5rem;
  padding: clamp(1.5rem, 4vw, 3rem);
  border: 1px solid var(--line);
  border-radius: 1.3rem;
  background: var(--paper);
}

.article:target {
  border-color: var(--clay);
  box-shadow: 0 0 0 5px rgb(164 75 54 / 12%);
}

.article h2 {
  font-size: clamp(2rem, 4vw, 3.2rem);
}

.article h3 {
  margin: 2rem 0 0.45rem;
  font-size: 1.08rem;
}

.article p,
.article li {
  max-width: 68ch;
}

.article .standfirst {
  margin-top: 1rem;
  color: var(--green-dark);
  font-family: var(--serif);
  font-size: 1.3rem;
  font-weight: 600;
  line-height: 1.45;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.tag {
  display: inline-flex;
  padding: 0.25rem 0.6rem;
  border-radius: 999px;
  background: var(--sea);
  color: var(--green-dark);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.tag.status-direction {
  background: var(--clay-light);
  color: #7b2f20;
}

.tag.status-pilot {
  background: var(--ochre);
  color: #684400;
}

.evidence-box,
.boundary-box,
.example-box {
  margin-top: 1.5rem;
  padding: 1rem 1.15rem;
  border-left: 0.35rem solid var(--green);
  background: var(--sea);
}

.boundary-box {
  border-left-color: var(--clay);
  background: var(--clay-light);
}

.example-box {
  border-left-color: #c98917;
  background: #fbf1d4;
}

.evidence-box h3,
.boundary-box h3,
.example-box h3 {
  margin-top: 0;
}

details {
  margin-top: 1.5rem;
  border-top: 1px solid var(--line);
  padding-top: 1rem;
}

summary {
  cursor: pointer;
  color: var(--green-dark);
  font-weight: 800;
}

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

.source-card {
  padding: 1.4rem;
}

.source-card h3 {
  margin-top: 0;
}

.source-card .source-type {
  color: var(--clay);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.method-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--paper);
}

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

.method-table th {
  background: var(--sea);
}

.site-footer {
  padding: 3.5rem 0;
  border-top: 1px solid var(--line);
  background: var(--paper);
}

.footer-shell {
  display: grid;
  gap: 2rem;
  grid-template-columns: 1.2fr 0.8fr;
}

.footer-shell p {
  max-width: 38rem;
  color: var(--muted);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  align-content: flex-start;
  justify-content: flex-end;
  gap: 0.75rem 1.2rem;
}

.footer-links a {
  font-size: 0.92rem;
  font-weight: 700;
}

[hidden] {
  display: none !important;
}

@media (max-width: 900px) {
  .hero-shell,
  .trust-layout {
    grid-template-columns: 1fr;
  }

  .hero h1 {
    max-width: 14ch;
  }

  .hero-figure {
    max-width: 46rem;
  }

  .path-grid,
  .principle-grid,
  .article-grid,
  .status-grid {
    grid-template-columns: 1fr 1fr;
  }

  .site-nav {
    gap: 0.9rem;
  }
}

@media (max-width: 720px) {
  body {
    font-size: 1rem;
  }

  .nav-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  .site-nav {
    position: absolute;
    top: calc(100% + 1px);
    right: 0;
    left: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 1rem;
    border-bottom: 1px solid var(--line);
    background: var(--paper);
  }

  .site-nav[data-open="true"] {
    display: flex;
  }

  .site-nav a {
    min-height: 2.75rem;
    padding: 0.55rem 0.75rem;
  }

  .brand-byline {
    display: none;
  }

  .path-grid,
  .principle-grid,
  .article-grid,
  .status-grid,
  .source-grid,
  .footer-shell {
    grid-template-columns: 1fr;
  }

  .path-card {
    min-height: 14rem;
  }

  .result-count {
    width: 100%;
    margin-left: 0;
  }

  .method-table,
  .method-table tbody,
  .method-table tr,
  .method-table th,
  .method-table td {
    display: block;
  }

  .method-table thead {
    position: absolute;
    overflow: hidden;
    width: 1px;
    height: 1px;
    clip: rect(0 0 0 0);
  }

  .method-table tr + tr {
    margin-top: 1rem;
  }

  .method-table td::before {
    display: block;
    color: var(--muted);
    content: attr(data-label);
    font-size: 0.75rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
  }

  .footer-links {
    justify-content: flex-start;
  }
}

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

@media print {
  .site-header,
  .hero-actions,
  .filter-bar,
  .site-footer {
    display: none;
  }

  body {
    background: white;
    color: black;
  }

  .article,
  .source-card {
    break-inside: avoid;
    border-color: #999;
  }
}