:root {
  color-scheme: light dark;
  --page: #fffdfb;
  --panel: #f8f3ee;
  --ink: #211d1a;
  --ink-soft: #655b54;
  --rule: #e7ddd5;
  --accent: #9a3412;
  --accent-strong: #7c2d12;
  --accent-soft: #ffeadf;
  --code-ink: #342923;
  --measure: 49rem;
  --sans: Inter, ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --page: #17120f;
    --panel: #211a16;
    --ink: #f5ece6;
    --ink-soft: #cbbab0;
    --rule: #3d3029;
    --accent: #fb923c;
    --accent-strong: #fdba74;
    --accent-soft: #3a2116;
    --code-ink: #f5e5dc;
  }
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--page);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 1rem;
  line-height: 1.68;
  -webkit-text-size-adjust: 100%;
}

a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--accent-strong);
  text-decoration-thickness: 2px;
}

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

.skip {
  position: absolute;
  left: -10000px;
}

.skip:focus {
  left: 1rem;
  top: 1rem;
  z-index: 10;
  padding: 0.55rem 0.8rem;
  border: 1px solid var(--rule);
  border-radius: 0.45rem;
  background: var(--page);
}

.banner {
  border-top: 0.3rem solid var(--accent);
  border-bottom: 1px solid var(--rule);
  background: var(--panel);
}

.banner-inner {
  max-width: 76rem;
  margin: 0 auto;
  padding: 1.6rem 1.25rem 1.35rem;
}

.wordmark {
  color: var(--ink);
  font-size: 1.55rem;
  font-weight: 760;
  letter-spacing: -0.035em;
  text-decoration: none;
}

.wordmark span {
  color: var(--accent);
}

.tagline {
  margin: 0.1rem 0 0.7rem;
  color: var(--ink-soft);
}

.elsewhere {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1rem;
  font-size: 0.9rem;
}

.page {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  max-width: 76rem;
  margin: 0 auto;
  padding: 0 1.25rem 4rem;
  gap: 0 3rem;
}

.chapters ol {
  display: flex;
  gap: 0.3rem;
  margin: 1.25rem 0 0;
  padding: 0 0 0.75rem;
  overflow-x: auto;
  list-style: none;
  scrollbar-width: thin;
}

.chapters li {
  flex: 0 0 auto;
}

.chapters a {
  display: block;
  padding: 0.35rem 0.65rem;
  border: 1px solid var(--rule);
  border-radius: 999px;
  color: var(--ink-soft);
  text-decoration: none;
  white-space: nowrap;
}

.chapters a:hover,
.chapters a[aria-current="page"] {
  border-color: var(--accent);
  color: var(--accent-strong);
  background: var(--accent-soft);
}

.chapters a[aria-current="page"] {
  font-weight: 650;
}

.prose {
  width: min(100%, var(--measure));
  padding-top: 1.4rem;
}

.prose h1,
.prose h2,
.prose h3 {
  line-height: 1.22;
  letter-spacing: -0.025em;
}

.prose h1 {
  margin: 0.7rem 0 1rem;
  font-size: clamp(2.1rem, 6vw, 3.25rem);
}

.prose h2 {
  margin: 2.8rem 0 0.8rem;
  padding-top: 0.8rem;
  border-top: 1px solid var(--rule);
  font-size: 1.45rem;
}

.prose h3 {
  margin: 1.8rem 0 0.55rem;
  font-size: 1.12rem;
}

.prose blockquote {
  margin: 1.4rem 0;
  padding: 0.2rem 1rem;
  border-left: 0.25rem solid var(--accent);
  color: var(--ink-soft);
  background: var(--accent-soft);
}

.prose table {
  display: block;
  width: 100%;
  margin: 1.35rem 0;
  overflow-x: auto;
  border-collapse: collapse;
  font-size: 0.94rem;
}

.prose th,
.prose td {
  padding: 0.5rem 0.65rem;
  border-bottom: 1px solid var(--rule);
  text-align: left;
  vertical-align: top;
}

.prose th {
  color: var(--ink-soft);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.prose code {
  padding: 0.1em 0.3em;
  border-radius: 0.3rem;
  background: var(--panel);
  color: var(--code-ink);
  font-family: var(--mono);
  font-size: 0.88em;
}

.prose pre {
  margin: 1.35rem 0;
  padding: 1rem 1.1rem;
  overflow-x: auto;
  border: 1px solid var(--rule);
  border-radius: 0.65rem;
  background: var(--panel);
  line-height: 1.55;
}

.prose pre code {
  padding: 0;
  background: none;
  font-size: 0.86rem;
}

.prose li {
  margin: 0.38rem 0;
}

.highlight .c,
.highlight .c1,
.highlight .cm {
  color: var(--ink-soft);
  font-style: italic;
}

.highlight .k,
.highlight .kd,
.highlight .kn,
.highlight .kt {
  color: var(--accent);
}

.highlight .s,
.highlight .s1,
.highlight .s2 {
  color: #9b3f28;
}

.highlight .nf,
.highlight .nx {
  font-weight: 650;
}

.colophon {
  border-top: 1px solid var(--rule);
  background: var(--panel);
  color: var(--ink-soft);
  font-size: 0.9rem;
}

.colophon p {
  max-width: 76rem;
  margin: 0 auto;
  padding: 0.55rem 1.25rem;
}

.colophon p:first-child {
  padding-top: 1.25rem;
}

.colophon p:last-child {
  padding-bottom: 1.5rem;
}

@media (min-width: 62rem) {
  .page {
    grid-template-columns: 15rem minmax(0, 1fr);
  }

  .chapters {
    position: sticky;
    top: 0;
    align-self: start;
    max-height: 100vh;
    overflow-y: auto;
    padding-top: 2rem;
  }

  .chapters ol {
    display: block;
    margin: 0;
    padding: 0;
    overflow: visible;
  }

  .chapters li {
    border-left: 2px solid var(--rule);
  }

  .chapters a {
    padding: 0.4rem 0.8rem;
    border: 0;
    border-radius: 0;
    white-space: normal;
  }
}

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