:root {
  --surface: #f5f7f2;
  --surface-muted: #e8eee4;
  --surface-strong: #ffffff;
  --text: #13211e;
  --text-muted: #53635f;
  --border: rgba(19, 33, 30, 0.18);
  --border-strong: rgba(19, 33, 30, 0.34);
  --action: #0d6466;
  --action-hover: #094b4d;
  --warning: #9a6500;
  --success: #386f3a;
  --danger: #a43f33;
  --info: #315f9b;
  --focus: #d5962c;
  --max: 1320px;
  --reading: 760px;
  --wide: 1040px;
  --radius: 8px;
  --shadow: 0 18px 44px rgba(30, 43, 38, 0.08);
}

* {
  box-sizing: border-box;
}

html {
  background: var(--surface);
  color: var(--text);
  font-size: 16px;
  scroll-behavior: smooth;
  scrollbar-color: var(--action) var(--surface-muted);
  scrollbar-width: thin;
}

::-webkit-scrollbar {
  width: 12px;
  height: 12px;
}

::-webkit-scrollbar-track {
  background: var(--surface-muted);
  border-left: 1px solid var(--border);
}

::-webkit-scrollbar-thumb {
  background: var(--action);
  border: 3px solid var(--surface-muted);
  border-radius: 999px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--action-hover);
}

::-webkit-scrollbar-corner {
  background: var(--surface-muted);
}

body {
  margin: 0;
  font-family: Charter, "Bitstream Charter", "Sitka Text", Georgia, serif;
  line-height: 1.64;
  text-rendering: optimizeLegibility;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(19, 33, 30, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(19, 33, 30, 0.035) 1px, transparent 1px);
  background-size: 42px 42px;
  mask-image: linear-gradient(to bottom, #000 0, rgba(0, 0, 0, 0.16) 52%, transparent 100%);
}

a {
  color: var(--action);
  text-decoration-color: rgba(13, 100, 102, 0.35);
  text-underline-offset: 0.16em;
}

a:hover {
  color: var(--action-hover);
}

a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
}

img,
svg {
  max-width: 100%;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid var(--border);
  background: rgba(245, 247, 242, 0.94);
  backdrop-filter: blur(16px);
}

.nav-shell,
.footer-shell,
.section-inner {
  width: min(var(--max), calc(100% - 40px));
  margin-inline: auto;
}

.nav-shell {
  display: grid;
  grid-template-columns: auto 1fr auto auto;
  align-items: center;
  gap: 20px;
  min-height: 74px;
}

.brand {
  display: inline-grid;
  gap: 0;
  color: var(--text);
  text-decoration: none;
}

.brand strong {
  font-family: Bahnschrift, "DIN Condensed", "Arial Narrow", sans-serif;
  font-size: 1.08rem;
  letter-spacing: 0;
  text-transform: uppercase;
}

.brand span {
  color: var(--text-muted);
  font-size: 0.78rem;
}

.nav-links {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
}

.nav-links a {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  padding: 0 13px;
  border-radius: var(--radius);
  color: var(--text);
  text-decoration: none;
  font-size: 0.93rem;
}

.nav-links a[aria-current="page"],
.nav-links a:hover {
  background: var(--surface-muted);
}

.button,
.nav-cta {
  min-height: 44px;
  min-width: 164px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 0 18px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  background: var(--action);
  color: #fff;
  font-family: Bahnschrift, "DIN Condensed", "Arial Narrow", sans-serif;
  font-size: 0.9rem;
  letter-spacing: 0;
  text-decoration: none;
  text-transform: uppercase;
  white-space: nowrap;
  transition: background-color 160ms ease, border-color 160ms ease, color 160ms ease;
}

.button:hover,
.nav-cta:hover {
  background: var(--action-hover);
  color: #fff;
}

.button.secondary {
  background: transparent;
  color: var(--text);
  border-color: var(--border-strong);
}

.button.secondary:hover {
  border-color: var(--action);
  color: var(--action-hover);
  background: rgba(13, 100, 102, 0.07);
}

.menu-toggle {
  display: none;
  min-height: 44px;
  min-width: 48px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface-strong);
  color: var(--text);
  font-family: Bahnschrift, "DIN Condensed", "Arial Narrow", sans-serif;
  font-size: 0.84rem;
  text-transform: uppercase;
}

.hero {
  border-bottom: 1px solid var(--border);
  overflow: hidden;
  background:
    radial-gradient(circle at 68% 22%, rgba(13, 100, 102, 0.11), transparent 28%),
    linear-gradient(180deg, rgba(232, 238, 228, 0.92), rgba(245, 247, 242, 0.18));
}

.hero-grid {
  width: min(var(--max), calc(100% - 40px));
  margin-inline: auto;
  min-height: clamp(620px, calc(100svh - 180px), 720px);
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(430px, 0.78fr);
  align-items: center;
  gap: clamp(34px, 6vw, 88px);
  padding: clamp(30px, 5vh, 44px) 0 16px;
}

.hero-copy {
  display: grid;
  align-content: center;
}

.hero-title {
  max-width: 720px;
  font-size: clamp(3.1rem, 5.55vw, 5.65rem);
  line-height: 0.94;
}

.hero-title span {
  display: block;
}

.hero-title span:nth-child(2) {
  color: var(--action);
}

.kicker,
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 18px;
  color: var(--info);
  font-family: Bahnschrift, "DIN Condensed", "Arial Narrow", sans-serif;
  font-size: 0.82rem;
  letter-spacing: 0;
  text-transform: uppercase;
}

.kicker::before,
.eyebrow::before {
  content: "";
  width: 28px;
  height: 2px;
  background: currentColor;
}

h1,
h2,
h3,
h4 {
  margin: 0;
  font-family: Bahnschrift, "DIN Condensed", "Arial Narrow", sans-serif;
  letter-spacing: 0;
  line-height: 1.05;
}

h1 {
  max-width: 930px;
  font-size: clamp(2.85rem, 8vw, 6.8rem);
  text-transform: uppercase;
}

.page-title {
  font-size: clamp(2.4rem, 6vw, 5.4rem);
}

h2 {
  font-size: clamp(1.8rem, 3.6vw, 3.55rem);
}

h3 {
  font-size: clamp(1.22rem, 2.2vw, 1.72rem);
}

p {
  margin: 0;
}

.lead {
  max-width: var(--reading);
  margin-top: 24px;
  color: var(--text-muted);
  font-size: clamp(1.1rem, 1.7vw, 1.32rem);
  line-height: 1.58;
}

.hero-lead {
  max-width: 650px;
  margin-top: 18px;
}

.hero-proof-strip {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  width: min(100%, 650px);
  margin-top: 22px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--border);
}

.hero-proof-strip span {
  min-height: 58px;
  display: grid;
  align-content: center;
  gap: 2px;
  padding: 12px 16px;
  background: rgba(255, 255, 255, 0.76);
  color: var(--text-muted);
  font-size: 0.9rem;
}

.hero-proof-strip strong {
  color: var(--text);
  font-family: Bahnschrift, "DIN Condensed", "Arial Narrow", sans-serif;
  font-size: 1.42rem;
  line-height: 1;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.hero-scope {
  max-width: 650px;
  margin-top: 14px;
  color: var(--text-muted);
  font-size: 0.96rem;
}

.hero-scope strong {
  color: var(--text);
  font-family: Bahnschrift, "DIN Condensed", "Arial Narrow", sans-serif;
  text-transform: uppercase;
}

.scope-note,
.answer-box,
.source-note,
.warning-box {
  border: 1px solid var(--border);
  border-left: 5px solid var(--info);
  border-radius: var(--radius);
  background: var(--surface-strong);
  box-shadow: var(--shadow);
  padding: clamp(20px, 3vw, 28px);
}

.scope-note {
  margin-top: 30px;
}

.scope-note strong,
.answer-box strong,
.source-note strong,
.warning-box strong {
  font-family: Bahnschrift, "DIN Condensed", "Arial Narrow", sans-serif;
  letter-spacing: 0;
  text-transform: uppercase;
}

.ledger-panel {
  position: relative;
  display: grid;
  gap: 14px;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  background:
    linear-gradient(135deg, rgba(19, 33, 30, 0.98), rgba(16, 56, 53, 0.96)),
    var(--text);
  color: #eef4ed;
  padding: clamp(18px, 2.4vw, 28px);
  box-shadow: var(--shadow);
}

.ledger-panel::before {
  content: "";
  position: absolute;
  inset: 14px;
  border: 1px solid rgba(238, 244, 237, 0.16);
  border-radius: calc(var(--radius) - 2px);
  pointer-events: none;
}

.ledger-top,
.ledger-grid,
.ledger-rule,
.ledger-sources {
  position: relative;
}

.ledger-top {
  display: grid;
  gap: 6px;
  padding-bottom: 14px;
  border-bottom: 1px solid rgba(238, 244, 237, 0.18);
}

.ledger-top span,
.ledger-rule span {
  color: #8fc7c3;
  font-family: Bahnschrift, "DIN Condensed", "Arial Narrow", sans-serif;
  font-size: 0.8rem;
  letter-spacing: 0;
  text-transform: uppercase;
}

.ledger-top strong {
  max-width: 420px;
  font-family: Bahnschrift, "DIN Condensed", "Arial Narrow", sans-serif;
  font-size: clamp(1.42rem, 2.55vw, 2.18rem);
  line-height: 1.02;
  text-transform: uppercase;
}

.ledger-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: rgba(238, 244, 237, 0.16);
  border: 1px solid rgba(238, 244, 237, 0.16);
  border-radius: var(--radius);
  overflow: hidden;
}

.ledger-row {
  min-height: 124px;
  display: grid;
  align-content: start;
  gap: 8px;
  padding: 15px;
  background: rgba(245, 247, 242, 0.055);
}

.ledger-index {
  width: 44px;
  height: 30px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(238, 244, 237, 0.24);
  border-radius: calc(var(--radius) - 2px);
  color: #8fc7c3;
  font-family: Bahnschrift, "DIN Condensed", "Arial Narrow", sans-serif;
  font-size: 0.76rem;
}

.ledger-row strong {
  font-family: Bahnschrift, "DIN Condensed", "Arial Narrow", sans-serif;
  font-size: 1.02rem;
  text-transform: uppercase;
}

.ledger-row p,
.ledger-rule p {
  color: rgba(238, 244, 237, 0.72);
  font-size: 0.92rem;
  line-height: 1.46;
}

.ledger-rule {
  display: grid;
  gap: 6px;
  padding: 14px 16px;
  border: 1px solid rgba(213, 150, 44, 0.48);
  border-radius: var(--radius);
  background: rgba(213, 150, 44, 0.08);
}

.ledger-rule span {
  color: #e4b565;
}

.ledger-sources {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.ledger-sources span {
  min-height: 32px;
  display: inline-flex;
  align-items: center;
  padding: 0 10px;
  border: 1px solid rgba(238, 244, 237, 0.18);
  border-radius: calc(var(--radius) - 2px);
  color: rgba(238, 244, 237, 0.82);
  font-family: Bahnschrift, "DIN Condensed", "Arial Narrow", sans-serif;
  font-size: 0.76rem;
  text-transform: uppercase;
}

.band {
  padding: clamp(58px, 9vw, 112px) 0;
}

.hero + .band {
  padding-top: clamp(34px, 5vw, 56px);
}

.band.muted {
  border-block: 1px solid var(--border);
  background: rgba(232, 238, 228, 0.62);
}

.section-head {
  display: grid;
  grid-template-columns: minmax(0, 0.78fr) minmax(280px, 0.52fr);
  gap: 32px;
  align-items: end;
  margin-bottom: 36px;
}

.section-head p {
  color: var(--text-muted);
  font-size: 1.04rem;
}

.grid {
  display: grid;
  gap: 18px;
}

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

.grid.three {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid.four {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.card {
  min-width: 0;
  display: grid;
  gap: 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface-strong);
  padding: 22px;
}

.card h3 a {
  color: var(--text);
  text-decoration: none;
}

.card h3 a:hover {
  color: var(--action-hover);
  text-decoration: underline;
  text-underline-offset: 0.16em;
}

.card p,
.meta,
.caption {
  color: var(--text-muted);
}

.meta,
.badge,
.caption,
.crumbs,
.small-list {
  font-size: 0.88rem;
}

.badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.badge {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  padding: 0 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface-muted);
  color: var(--text);
  font-family: Bahnschrift, "DIN Condensed", "Arial Narrow", sans-serif;
  letter-spacing: 0;
  text-transform: uppercase;
}

.badge.warn {
  color: var(--warning);
  background: rgba(154, 101, 0, 0.08);
  border-color: rgba(154, 101, 0, 0.26);
}

.badge.danger {
  color: var(--danger);
  background: rgba(164, 63, 51, 0.08);
  border-color: rgba(164, 63, 51, 0.26);
}

.badge.success {
  color: var(--success);
  background: rgba(56, 111, 58, 0.08);
  border-color: rgba(56, 111, 58, 0.26);
}

.article-shell {
  width: min(var(--wide), calc(100% - 40px));
  margin: 0 auto;
  padding: 44px 0 86px;
}

.article-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 268px;
  gap: 42px;
  align-items: start;
}

.article-main {
  min-width: 0;
  display: grid;
  gap: 32px;
}

.article-main section {
  display: grid;
  gap: 16px;
}

.article-main p,
.article-main li {
  max-width: var(--reading);
}

.article-main ul,
.article-main ol {
  margin: 0;
  padding-left: 1.25rem;
}

.article-main li + li {
  margin-top: 8px;
}

.aside {
  position: sticky;
  top: 96px;
  display: grid;
  gap: 14px;
}

.aside-card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface-strong);
  padding: 18px;
}

.aside-card h2,
.aside-card h3 {
  margin-bottom: 10px;
  font-size: 1rem;
  text-transform: uppercase;
}

.small-list {
  display: grid;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.small-list a {
  color: var(--text);
  text-decoration: none;
}

.small-list a:hover {
  color: var(--action-hover);
  text-decoration: underline;
}

.crumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 28px;
  color: var(--text-muted);
}

.crumbs a {
  color: var(--text-muted);
  text-decoration: none;
}

.crumbs a:hover {
  color: var(--action-hover);
}

.article-hero {
  border-bottom: 1px solid var(--border);
  background: var(--surface-muted);
}

.article-hero .section-inner {
  padding: 58px 0 54px;
}

.article-meta {
  margin-top: 18px;
  color: var(--text-muted);
}

.matrix,
.source-table {
  width: 100%;
  border-collapse: collapse;
  border: 1px solid var(--border);
  background: var(--surface-strong);
}

.matrix th,
.matrix td,
.source-table th,
.source-table td {
  padding: 14px;
  border-bottom: 1px solid var(--border);
  border-right: 1px solid var(--border);
  vertical-align: top;
  text-align: left;
}

.matrix th,
.source-table th {
  background: var(--surface-muted);
  font-family: Bahnschrift, "DIN Condensed", "Arial Narrow", sans-serif;
  letter-spacing: 0;
  text-transform: uppercase;
}

.matrix tr:last-child td,
.source-table tr:last-child td {
  border-bottom: 0;
}

.term-list {
  display: grid;
  gap: 14px;
}

.term {
  border-left: 4px solid var(--action);
  background: var(--surface-strong);
  padding: 18px 20px;
}

.term dt {
  margin: 0 0 6px;
  font-family: Bahnschrift, "DIN Condensed", "Arial Narrow", sans-serif;
  font-size: 1.08rem;
  text-transform: uppercase;
}

.term dd {
  margin: 0;
  color: var(--text-muted);
}

.faq-stack {
  display: grid;
  gap: 12px;
}

details {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface-strong);
}

summary {
  min-height: 56px;
  cursor: pointer;
  padding: 16px 20px;
  font-family: Bahnschrift, "DIN Condensed", "Arial Narrow", sans-serif;
  letter-spacing: 0;
}

details p {
  padding: 0 20px 20px;
  color: var(--text-muted);
}

.bottom-cta {
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: var(--surface-muted);
  padding: 42px 0;
}

.bottom-cta .section-inner {
  display: flex;
  gap: 22px;
  align-items: center;
  justify-content: space-between;
}

.bottom-cta p {
  max-width: 700px;
  color: var(--text-muted);
}

.site-footer {
  padding: 48px 0;
  background: #13211e;
  color: #e8eee4;
}

.footer-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 28px;
  align-items: start;
}

.footer-shell a {
  color: #e8eee4;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: flex-end;
}

.source-list {
  display: grid;
  gap: 10px;
  margin: 0;
  padding-left: 1.2rem;
}

.source-list li {
  max-width: var(--reading);
}

.not-found {
  min-height: 62vh;
  display: grid;
  align-items: center;
  padding: 70px 0;
}

@media (max-width: 980px) {
  .nav-shell {
    grid-template-columns: auto 1fr auto;
  }

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

  .nav-links {
    position: absolute;
    top: 74px;
    left: 0;
    right: 0;
    display: none;
    padding: 14px 20px 22px;
    border-bottom: 1px solid var(--border);
    background: var(--surface);
  }

  .nav-links[data-open="true"] {
    display: grid;
    gap: 6px;
  }

  .nav-links a {
    justify-content: center;
    background: var(--surface-strong);
    border: 1px solid var(--border);
  }

  .nav-cta {
    grid-column: 2;
    justify-self: end;
  }

  .hero-grid,
  .section-head,
  .article-layout,
  .footer-shell {
    grid-template-columns: 1fr;
  }

  .bottom-cta .section-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .hero-grid {
    min-height: auto;
    padding-top: 44px;
  }

  .ledger-panel {
    max-width: 720px;
  }

  .aside {
    position: static;
  }

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

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

  .matrix,
  .source-table,
  .matrix tbody,
  .source-table tbody,
  .matrix tr,
  .source-table tr,
  .matrix th,
  .source-table th,
  .matrix td,
  .source-table td {
    display: block;
    width: 100%;
  }

  .matrix thead,
  .source-table thead {
    display: none;
  }

  .matrix tr,
  .source-table tr {
    border-bottom: 1px solid var(--border);
  }

  .matrix td,
  .source-table td {
    border-right: 0;
  }

  .matrix td::before,
  .source-table td::before {
    content: attr(data-label);
    display: block;
    margin-bottom: 4px;
    color: var(--text);
    font-family: Bahnschrift, "DIN Condensed", "Arial Narrow", sans-serif;
    font-size: 0.78rem;
    text-transform: uppercase;
  }
}

@media (max-width: 640px) {
  .nav-shell,
  .section-inner,
  .hero-grid,
  .article-shell,
  .footer-shell {
    width: min(100% - 28px, var(--max));
  }

  .nav-shell {
    gap: 10px;
  }

  .brand span {
    display: none;
  }

  .nav-cta {
    min-width: 132px;
    padding-inline: 12px;
    font-size: 0.78rem;
  }

  .hero-actions,
  .bottom-cta .section-inner {
    align-items: stretch;
  }

  .hero-actions {
    order: 3;
    margin-top: 20px;
  }

  .hero-proof-strip {
    order: 4;
    margin-top: 18px;
  }

  .hero-scope {
    order: 5;
  }

  .button,
  .nav-cta {
    width: 100%;
  }

  .menu-toggle {
    min-width: 44px;
  }

  .grid.two,
  .grid.three,
  .grid.four {
    grid-template-columns: 1fr;
  }

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

  .ledger-row {
    min-height: auto;
  }

  h1 {
    font-size: clamp(2.25rem, 17vw, 4.2rem);
  }

  .hero-title {
    font-size: clamp(2.55rem, 14vw, 4rem);
  }

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

  .hero-proof-strip span {
    min-height: 54px;
  }
}

@media (max-width: 360px) {
  .nav-shell {
    width: calc(100% - 20px);
  }

  .brand strong {
    font-size: 0.92rem;
  }

  .nav-cta {
    min-width: 118px;
    font-size: 0.72rem;
  }

  .card,
  .scope-note,
  .answer-box,
  .source-note,
  .warning-box {
    padding: 18px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}