:root {
  color-scheme: light;
  --paper: #f7f4ec;
  --paper-deep: #eee9dd;
  --ink: #1f2826;
  --ink-soft: #51605c;
  --line: #c9c4b8;
  --line-strong: #8d948e;
  --green: #0d6957;
  --green-deep: #07493d;
  --green-pale: #dcebe5;
  --amber: #a94f18;
  --amber-pale: #f4dfc9;
  --red: #984035;
  --red-pale: #f1dcd7;
  --white: #fffefa;
  --shadow: 0 18px 45px rgba(31, 40, 38, 0.09);
  --radius: 0.75rem;
  --shell: 72rem;
  --measure: 47rem;
  --sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --mono: "Cascadia Code", "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  text-size-adjust: 100%;
}

body {
  min-width: 20rem;
  margin: 0;
  background:
    linear-gradient(rgba(31, 40, 38, 0.035) 1px, transparent 1px),
    var(--paper);
  background-size: 100% 2rem;
  color: var(--ink);
  font-family: var(--sans);
  font-size: 1rem;
  line-height: 1.68;
}

a {
  color: var(--green-deep);
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.17em;
}

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

a:focus-visible,
summary:focus-visible {
  border-radius: 0.2rem;
  outline: 3px solid var(--amber);
  outline-offset: 3px;
}

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

code,
kbd,
pre {
  font-family: var(--mono);
}

code {
  border: 1px solid rgba(13, 105, 87, 0.18);
  border-radius: 0.22rem;
  background: var(--green-pale);
  padding: 0.08rem 0.28rem;
  font-size: 0.91em;
}

pre {
  max-width: 100%;
  overflow-x: auto;
  border: 1px solid #37433f;
  border-radius: 0.55rem;
  background: #18211f;
  color: #f5f2e9;
  padding: 1rem 1.1rem;
  box-shadow: var(--shadow);
  font-size: 0.9rem;
  line-height: 1.58;
}

pre code {
  border: 0;
  background: transparent;
  color: inherit;
  padding: 0;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 0.75rem;
  left: 0.75rem;
  transform: translateY(-180%);
  border-radius: 0.4rem;
  background: var(--ink);
  color: var(--white);
  padding: 0.55rem 0.8rem;
}

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

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

.site-header {
  border-bottom: 1px solid var(--line);
  background: rgba(247, 244, 236, 0.96);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  min-height: 4.5rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  color: var(--ink);
  font-weight: 750;
  letter-spacing: -0.02em;
  text-decoration: none;
}

.brand-mark {
  display: inline-grid;
  width: 2.25rem;
  height: 2.25rem;
  place-items: center;
  border: 1px solid var(--ink);
  border-radius: 0.38rem;
  background: var(--green);
  color: var(--white);
  font-family: var(--mono);
  font-size: 0.73rem;
  letter-spacing: 0.04em;
  box-shadow: 0.2rem 0.2rem 0 var(--ink);
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
  gap: 0.15rem 0.3rem;
}

.nav-links a {
  border-radius: 999px;
  color: var(--ink-soft);
  padding: 0.38rem 0.58rem;
  font-size: 0.86rem;
  font-weight: 650;
  text-decoration: none;
}

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

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(17rem, 0.55fr);
  gap: clamp(2rem, 5vw, 5rem);
  align-items: end;
  padding-block: clamp(4.5rem, 9vw, 8.5rem) clamp(3.5rem, 7vw, 6.5rem);
}

.hero-copy {
  max-width: 52rem;
}

.eyebrow {
  margin: 0 0 1rem;
  color: var(--green);
  font-family: var(--mono);
  font-size: 0.78rem;
  font-weight: 750;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  margin-block: 0;
  color: var(--ink);
  line-height: 1.12;
  text-wrap: balance;
}

h1 {
  max-width: 17ch;
  font-size: clamp(2.55rem, 6.2vw, 5.4rem);
  letter-spacing: -0.055em;
}

.article-hero h1 {
  max-width: 22ch;
  font-size: clamp(2.35rem, 5vw, 4.6rem);
}

h2 {
  margin-top: 0.2rem;
  font-size: clamp(1.7rem, 3.4vw, 2.65rem);
  letter-spacing: -0.035em;
}

h3 {
  font-size: 1.15rem;
  letter-spacing: -0.015em;
}

.lead {
  max-width: 47rem;
  margin: 1.35rem 0 0;
  color: var(--ink-soft);
  font-size: clamp(1.1rem, 1.7vw, 1.34rem);
  line-height: 1.58;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.75rem;
}

.button {
  display: inline-flex;
  min-height: 2.8rem;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--ink);
  border-radius: 0.42rem;
  background: var(--green);
  color: var(--white);
  padding: 0.62rem 1rem;
  font-weight: 750;
  text-decoration: none;
  box-shadow: 0.18rem 0.18rem 0 var(--ink);
}

.button:hover {
  transform: translate(0.08rem, 0.08rem);
  background: var(--green-deep);
  color: var(--white);
  box-shadow: 0.1rem 0.1rem 0 var(--ink);
}

.button.secondary {
  background: var(--white);
  color: var(--ink);
}

.hero-note {
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: var(--white);
  padding: 1.25rem;
  box-shadow: 0.35rem 0.35rem 0 var(--green-pale);
}

.hero-note p {
  margin: 0;
}

.hero-note p + p {
  margin-top: 0.8rem;
}

.micro-label {
  color: var(--amber);
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.status-list {
  display: grid;
  gap: 0.65rem;
  margin: 1rem 0 0;
  padding: 0;
  list-style: none;
}

.status-list li {
  display: grid;
  grid-template-columns: 0.75rem 1fr;
  gap: 0.6rem;
  align-items: baseline;
}

.status-list li::before {
  width: 0.65rem;
  height: 0.65rem;
  border: 1px solid var(--green-deep);
  border-radius: 50%;
  background: var(--green-pale);
  content: "";
}

.band {
  border-block: 1px solid var(--line);
  background: rgba(255, 254, 250, 0.72);
  padding-block: clamp(3.5rem, 7vw, 6rem);
}

.section {
  padding-block: clamp(3.5rem, 7vw, 6rem);
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(0, 0.75fr) minmax(0, 1.25fr);
  gap: clamp(1.5rem, 5vw, 5rem);
  align-items: start;
  margin-bottom: 2rem;
}

.section-heading p {
  max-width: 43rem;
  margin: 0;
  color: var(--ink-soft);
  font-size: 1.08rem;
}

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

.card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 254, 250, 0.92);
  padding: 1.3rem;
}

.card-number {
  display: inline-block;
  margin-bottom: 1.7rem;
  color: var(--green);
  font-family: var(--mono);
  font-size: 0.77rem;
  font-weight: 800;
}

.card p {
  margin: 0.7rem 0 0;
  color: var(--ink-soft);
}

.feature-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  margin: 2rem 0 0;
  padding: 0;
  list-style: none;
}

.feature-list li {
  border-top: 2px solid var(--green);
  background: rgba(255, 254, 250, 0.65);
  padding: 1rem 0.9rem;
}

.feature-list strong {
  display: block;
  margin-bottom: 0.25rem;
}

.quote {
  margin: 0;
  border-left: 0.3rem solid var(--amber);
  background: var(--amber-pale);
  padding: 1.4rem 1.5rem;
  font-size: clamp(1.18rem, 2.2vw, 1.55rem);
  font-weight: 680;
  line-height: 1.48;
}

.article-hero {
  padding-block: clamp(4rem, 8vw, 7rem) clamp(2.5rem, 5vw, 4rem);
}

.article-layout {
  display: grid;
  grid-template-columns: minmax(12rem, 0.34fr) minmax(0, 1fr);
  gap: clamp(2rem, 6vw, 6rem);
  align-items: start;
  padding-bottom: 6rem;
}

.toc {
  position: sticky;
  top: 1rem;
  border-top: 2px solid var(--ink);
  padding-top: 0.9rem;
}

.toc p {
  margin: 0 0 0.6rem;
  color: var(--ink-soft);
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.toc ul {
  display: grid;
  gap: 0.36rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.toc a {
  color: var(--ink-soft);
  font-size: 0.88rem;
  font-weight: 640;
  text-decoration: none;
}

.toc a:hover {
  color: var(--amber);
}

.prose {
  max-width: var(--measure);
}

.prose > :first-child {
  margin-top: 0;
}

.prose h2 {
  scroll-margin-top: 1rem;
  margin-top: 4rem;
  padding-top: 0.3rem;
}

.prose h3 {
  scroll-margin-top: 1rem;
  margin-top: 2.2rem;
}

.prose p,
.prose ul,
.prose ol,
.prose table,
.prose pre,
.prose blockquote,
.prose details {
  margin-top: 1rem;
  margin-bottom: 1rem;
}

.prose li + li {
  margin-top: 0.42rem;
}

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

.callout {
  border: 1px solid var(--line-strong);
  border-left: 0.35rem solid var(--green);
  border-radius: 0.45rem;
  background: var(--green-pale);
  padding: 1rem 1.1rem;
}

.callout.warning {
  border-left-color: var(--amber);
  background: var(--amber-pale);
}

.callout.stop {
  border-left-color: var(--red);
  background: var(--red-pale);
}

.callout p {
  margin: 0;
}

.callout p + p {
  margin-top: 0.7rem;
}

.steps {
  margin: 1.5rem 0;
  padding: 0;
  counter-reset: steps;
  list-style: none;
}

.steps li {
  display: grid;
  grid-template-columns: 2.4rem 1fr;
  gap: 0.8rem;
  align-items: start;
  border-top: 1px solid var(--line);
  padding-block: 1rem;
  counter-increment: steps;
}

.steps li::before {
  display: grid;
  width: 2rem;
  height: 2rem;
  place-items: center;
  border-radius: 50%;
  background: var(--green);
  color: var(--white);
  content: counter(steps, decimal-leading-zero);
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 800;
}

.steps p {
  margin: 0.35rem 0 0;
  color: var(--ink-soft);
}

.table-wrap {
  max-width: 100%;
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 0.55rem;
  background: var(--white);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
}

th,
td {
  border-bottom: 1px solid var(--line);
  padding: 0.78rem 0.8rem;
  text-align: left;
  vertical-align: top;
}

th {
  background: var(--paper-deep);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

tr:last-child td {
  border-bottom: 0;
}

.pill {
  display: inline-flex;
  align-items: center;
  border: 1px solid currentColor;
  border-radius: 999px;
  color: var(--green-deep);
  padding: 0.14rem 0.5rem;
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 800;
  white-space: nowrap;
}

.pill.strict {
  color: var(--red);
}

.pill.conditional {
  color: var(--amber);
}

.case {
  margin-top: 1.3rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
  padding: 1.25rem;
}

.case h3 {
  display: flex;
  gap: 0.7rem;
  align-items: baseline;
}

.case-tag {
  flex: none;
  color: var(--amber);
  font-family: var(--mono);
  font-size: 0.71rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.case p:last-child {
  margin-bottom: 0;
}

.source-note {
  color: var(--ink-soft);
  font-size: 0.88rem;
}

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

.next-link {
  display: block;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
  color: var(--ink);
  padding: 1.2rem;
  text-decoration: none;
}

.next-link:hover {
  border-color: var(--amber);
  color: var(--ink);
}

.next-link span {
  display: block;
  margin-top: 0.4rem;
  color: var(--ink-soft);
  font-size: 0.92rem;
}

.site-footer {
  border-top: 1px solid var(--line);
  background: var(--ink);
  color: #dce2df;
  padding-block: 2.5rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 0.6fr);
  gap: 2rem;
  align-items: start;
}

.site-footer strong {
  color: var(--white);
}

.site-footer p {
  max-width: 42rem;
  margin: 0.45rem 0 0;
}

.site-footer nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.75rem;
}

.site-footer a {
  color: #bce3d8;
}

@media (max-width: 54rem) {
  .nav-wrap,
  .hero,
  .section-heading,
  .article-layout,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .nav-wrap {
    display: grid;
    padding-block: 0.85rem;
  }

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

  .hero {
    align-items: start;
  }

  .hero-note {
    max-width: 32rem;
  }

  .toc {
    position: static;
  }

  .toc ul {
    display: flex;
    flex-wrap: wrap;
    gap: 0.45rem 0.8rem;
  }

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

@media (max-width: 42rem) {
  .card-grid,
  .feature-list,
  .next-grid {
    grid-template-columns: 1fr;
  }

  .shell {
    width: min(calc(100% - 1.25rem), var(--shell));
  }

  h1 {
    font-size: clamp(2.35rem, 13vw, 3.75rem);
  }

  .brand span:last-child {
    max-width: 12rem;
    line-height: 1.2;
  }

  .nav-links a {
    padding-inline: 0.38rem;
    font-size: 0.81rem;
  }

  .case h3 {
    display: block;
  }

  .case-tag {
    display: block;
    margin-bottom: 0.4rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
  }
}

@media print {
  .site-header,
  .site-footer,
  .toc,
  .actions,
  .skip-link {
    display: none;
  }

  body {
    background: #fff;
    color: #000;
  }

  .article-layout,
  .hero {
    display: block;
  }

  a {
    color: #000;
  }

  pre,
  .card,
  .case,
  .callout {
    box-shadow: none;
    break-inside: avoid;
  }
}