:root {
  color-scheme: light dark;
  --paper: #f4f6f3;
  --ink: #17201d;
  --muted: #5f6b67;
  --line: #cfd7d3;
  --accent: #23644f;
  --measure: 46rem;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-synthesis: none;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-size: 16px;
  line-height: 1.65;
}

a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
}

a:hover {
  text-decoration-thickness: 2px;
}

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

.skip-link {
  position: fixed;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 3;
  padding: 0.6rem 0.85rem;
  background: var(--ink);
  color: var(--paper);
  transform: translateY(-180%);
}

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

.site-header {
  border-bottom: 1px solid var(--line);
}

.site-header__inner {
  width: min(100% - 2rem, 76rem);
  margin: 0 auto;
  min-height: 4.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  color: var(--ink);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-decoration: none;
  text-transform: uppercase;
}

.site-nav {
  display: flex;
  gap: 1rem;
  font-size: 0.9rem;
}

.site-nav [aria-current="page"] {
  color: var(--ink);
  font-weight: 700;
  text-decoration: none;
}

.layout {
  width: min(100% - 2rem, 76rem);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 12rem minmax(0, var(--measure));
  gap: clamp(2rem, 7vw, 7rem);
  align-items: start;
  padding: clamp(3rem, 7vw, 6.5rem) 0 7rem;
}

.toc {
  position: sticky;
  top: 2rem;
  font-size: 0.83rem;
}

.toc strong {
  display: block;
  margin-bottom: 0.8rem;
  color: var(--muted);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.toc ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

.toc li + li {
  margin-top: 0.55rem;
}

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

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

article {
  min-width: 0;
}

.eyebrow {
  margin: 0 0 0.8rem;
  color: var(--accent);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  line-height: 1.12;
  letter-spacing: -0.025em;
}

h1 {
  max-width: 12ch;
  margin: 0;
  font-size: clamp(2.8rem, 7vw, 5.7rem);
  font-weight: 760;
}

h2 {
  margin: 0 0 1.15rem;
  font-size: clamp(1.45rem, 3vw, 2rem);
}

h3 {
  margin: 1.8rem 0 0.55rem;
  font-size: 1.05rem;
}

.summary {
  max-width: 42rem;
  margin: 1.5rem 0 0;
  color: var(--muted);
  font-size: 1.1rem;
}

.effective {
  margin: 1.2rem 0 0;
  color: var(--muted);
  font-size: 0.85rem;
}

section {
  scroll-margin-top: 2rem;
  margin-top: clamp(3.5rem, 8vw, 6rem);
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
}

p,
ul,
ol {
  max-width: var(--measure);
}

li + li {
  margin-top: 0.5rem;
}

.notice {
  margin: 2.5rem 0 0;
  padding: 1rem 0 1rem 1.25rem;
  border-left: 3px solid var(--accent);
  color: var(--muted);
}

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

.site-footer {
  border-top: 1px solid var(--line);
}

.site-footer p {
  width: min(100% - 2rem, 76rem);
  margin: 0 auto;
  padding: 1.6rem 0;
  color: var(--muted);
  font-size: 0.78rem;
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #121715;
    --ink: #edf3f0;
    --muted: #a8b4af;
    --line: #33403b;
    --accent: #88d5b7;
  }
}

@media (max-width: 760px) {
  .layout {
    display: block;
    padding-top: 2.75rem;
  }

  .toc {
    position: static;
    margin: 2rem 0 3.5rem;
    padding: 1rem 0;
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
  }

  .site-header__inner {
    min-height: 4rem;
  }
}

@media print {
  :root {
    --paper: #ffffff;
    --ink: #000000;
    --muted: #333333;
    --line: #bbbbbb;
    --accent: #000000;
  }

  .site-header,
  .toc,
  .site-footer,
  .skip-link {
    display: none;
  }

  .layout {
    display: block;
    width: 100%;
    padding: 0;
  }

  h1 {
    font-size: 3rem;
  }

  section {
    break-inside: avoid;
    margin-top: 2rem;
  }

  a {
    color: inherit;
  }
}