:root {
  --paper: #f6f1e5;
  --paper-deep: #eee6d5;
  --ink: #24221d;
  --muted: #6f695e;
  --rule: #c9bfab;
  --accent: #9d3c2f;
  --accent-dark: #6f271f;
  --green: #40584f;
  --desk: #d7d0c1;
  --rail: #e9e1d1;
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua", Georgia, serif;
  --sans: "Helvetica Neue", Helvetica, Arial, sans-serif;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--desk);
  color: var(--ink);
  font-family: var(--serif);
  font-size: 18px;
  line-height: 1.7;
  text-rendering: optimizeLegibility;
}

a {
  color: var(--accent-dark);
  text-decoration-color: color-mix(in srgb, var(--accent) 45%, transparent);
  text-underline-offset: 0.16em;
}

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

.skip-link {
  position: fixed;
  z-index: 20;
  left: 1rem;
  top: -5rem;
  padding: 0.6rem 0.8rem;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--sans);
  font-size: 0.8rem;
}

.skip-link:focus {
  top: 1rem;
}

.book-shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 18rem minmax(0, 1fr);
  grid-template-rows: 3.25rem 3px auto;
}

.book-rail {
  position: fixed;
  inset: 0 auto 0 0;
  z-index: 5;
  width: 18rem;
  overflow-y: auto;
  padding: 2.2rem 2rem 2rem;
  background: var(--rail);
  border-right: 1px solid var(--rule);
}

.book-mark {
  width: 4.25rem;
  height: 4.25rem;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  justify-items: center;
  border: 2px solid var(--ink);
  color: var(--ink);
  font: 700 1.05rem/1 var(--sans);
  letter-spacing: -0.04em;
  text-decoration: none;
}

.book-mark span:nth-child(2) {
  color: var(--accent);
  font-weight: 400;
}

.book-rail-title {
  margin: 1.25rem 0 0;
  font: 700 1.45rem/1.06 var(--sans);
  letter-spacing: -0.025em;
}

.book-edition {
  margin: 0.65rem 0 2rem;
  color: var(--muted);
  font: 600 0.68rem/1.45 var(--sans);
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.book-toc {
  border-top: 1px solid var(--rule);
  padding-top: 0.8rem;
}

.book-toc .part {
  margin: 1.15rem 0 0.35rem;
  color: var(--accent);
  font: 700 0.64rem/1.2 var(--sans);
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.book-toc a {
  display: block;
  padding: 0.22rem 0;
  color: var(--ink);
  font: 500 0.77rem/1.35 var(--sans);
  text-decoration: none;
}

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

.book-toc b {
  display: inline-block;
  width: 1.75rem;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.67rem;
}

.book-source {
  margin: 2rem 0 0;
  padding-top: 1rem;
  border-top: 1px solid var(--rule);
  font: 500 0.7rem/1.7 var(--sans);
}

.book-running-head {
  grid-column: 2;
  grid-row: 1;
  position: sticky;
  top: 0;
  z-index: 4;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 2rem;
  background: color-mix(in srgb, var(--paper) 94%, transparent);
  border-bottom: 1px solid var(--rule);
  backdrop-filter: blur(10px);
  font: 600 0.68rem/1 var(--sans);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.book-running-head a {
  color: var(--ink);
  text-decoration: none;
}

.book-running-head span {
  max-width: 50%;
  overflow: hidden;
  color: var(--muted);
  text-overflow: ellipsis;
  white-space: nowrap;
}

.book-progress {
  grid-column: 2;
  grid-row: 2;
  position: sticky;
  top: 3.25rem;
  z-index: 4;
  background: var(--paper-deep);
}

.book-progress span {
  display: block;
  height: 3px;
  background: var(--accent);
}

.book-page {
  grid-column: 2;
  grid-row: 3;
  width: min(100%, 58rem);
  min-height: calc(100vh - 3.25rem);
  margin: 0 auto;
  padding: clamp(3rem, 7vw, 6.5rem) clamp(2rem, 7vw, 7rem) 3rem;
  background: var(--paper);
  box-shadow: 0 0 2.5rem rgb(56 48 35 / 12%);
}

.book-manuscript {
  max-width: 42rem;
  margin: 0 auto;
}

.book-manuscript > p:first-child {
  margin: -1.6rem 0 3rem;
  padding-bottom: 0.8rem;
  border-bottom: 1px solid var(--rule);
  color: var(--muted);
  font: 600 0.69rem/1.5 var(--sans);
  letter-spacing: 0.035em;
}

h1,
h2,
h3,
h4 {
  color: var(--ink);
  font-family: var(--sans);
}

h1 {
  margin: 0 0 2rem;
  font-size: clamp(2.8rem, 7vw, 4.8rem);
  font-weight: 700;
  line-height: 0.98;
  letter-spacing: -0.055em;
}

h1::after {
  content: "";
  display: block;
  width: 4.5rem;
  margin-top: 1.5rem;
  border-bottom: 0.32rem solid var(--accent);
}

h2 {
  margin: 3.8rem 0 1rem;
  padding-top: 0.7rem;
  border-top: 1px solid var(--rule);
  font-size: 1.45rem;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.022em;
}

h3 {
  margin: 2.4rem 0 0.65rem;
  color: var(--green);
  font-size: 1.02rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

p {
  margin: 0 0 1.15rem;
}

h1 + blockquote + p::first-letter,
h1 + p::first-letter {
  float: left;
  margin: 0.06em 0.1em 0 0;
  color: var(--accent);
  font-family: var(--sans);
  font-size: 4.1em;
  font-weight: 700;
  line-height: 0.8;
}

blockquote {
  margin: 1.8rem 0 2.2rem;
  padding: 0.2rem 0 0.2rem 1.35rem;
  border-left: 0.28rem solid var(--accent);
  color: var(--green);
  font-style: italic;
}

blockquote p:last-child {
  margin-bottom: 0;
}

code {
  padding: 0.08em 0.28em;
  border: 1px solid #d7cebb;
  border-radius: 0.16rem;
  background: #eee7d8;
  color: #332f28;
  font: 0.82em/1.4 var(--mono);
}

pre {
  margin: 1.7rem -0.4rem;
  padding: 1.25rem 1.35rem;
  overflow-x: auto;
  border: 1px solid var(--rule);
  border-left: 0.28rem solid var(--green);
  background: #ebe4d5;
  color: #27251f;
  font: 0.77rem/1.65 var(--mono);
  tab-size: 4;
}

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

table {
  width: 100%;
  margin: 1.8rem 0 2.2rem;
  border-collapse: collapse;
  font-size: 0.89rem;
  line-height: 1.45;
}

th,
td {
  padding: 0.65rem 0.55rem;
  border-bottom: 1px solid var(--rule);
  text-align: left;
  vertical-align: top;
}

th {
  color: var(--accent-dark);
  font-family: var(--sans);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

ul,
ol {
  margin: 0 0 1.3rem;
  padding-left: 1.45rem;
}

li {
  margin: 0.28rem 0;
  padding-left: 0.2rem;
}

hr {
  margin: 3.4rem 0 2rem;
  border: 0;
  border-top: 1px solid var(--rule);
}

.book-colophon {
  max-width: 42rem;
  margin: 5rem auto 0;
  padding-top: 1rem;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  border-top: 1px solid var(--rule);
  color: var(--muted);
  font: 500 0.66rem/1.5 var(--sans);
  letter-spacing: 0.04em;
}

.book-title-sheet {
  min-height: 31rem;
  margin: -2rem 0 4rem;
  padding: clamp(2rem, 7vw, 4rem);
  display: grid;
  grid-template-columns: minmax(0, 1fr) 8rem;
  grid-template-rows: auto 1fr auto;
  gap: 2rem;
  border: 1px solid var(--ink);
  border-top: 0.8rem solid var(--accent);
}

.book-title-kicker {
  grid-column: 1 / -1;
  margin: 0;
  font: 700 0.7rem/1 var(--sans);
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.book-title-words {
  align-self: center;
  margin: 0;
  font: 700 clamp(3.4rem, 8vw, 6.8rem)/0.84 var(--sans);
  letter-spacing: -0.07em;
}

.book-title-words span {
  display: block;
  color: var(--accent);
}

.book-title-glyph {
  align-self: center;
  width: 8rem;
  height: 8rem;
  display: grid;
  place-items: center;
  border: 0.38rem solid var(--ink);
  color: var(--ink);
  font: 700 2.3rem/1 var(--mono);
  transform: rotate(-2deg);
}

.book-title-subtitle {
  grid-column: 1 / -1;
  max-width: 30rem;
  margin: 0;
  color: var(--muted);
  font: 500 1.05rem/1.5 var(--sans);
}

.book-home .book-manuscript > p:first-child {
  display: none;
}

.book-home h1 {
  font-size: 2.5rem;
}

@media (max-width: 900px) {
  .book-shell {
    display: block;
    padding-top: 3.25rem;
  }

  .book-rail {
    position: static;
    width: auto;
    max-height: 16rem;
    padding: 1.2rem 1.5rem;
    border-right: 0;
    border-bottom: 1px solid var(--rule);
  }

  .book-mark,
  .book-rail-title,
  .book-edition,
  .book-source,
  .book-toc .part {
    display: none;
  }

  .book-toc {
    display: flex;
    gap: 0.6rem 1rem;
    overflow-x: auto;
    border: 0;
    padding: 0;
  }

  .book-toc a {
    flex: 0 0 auto;
  }

  .book-running-head {
    position: fixed;
    inset: 0 0 auto;
    height: 3.25rem;
  }

  .book-progress {
    position: fixed;
    inset: 3.25rem 0 auto;
  }

  .book-page {
    width: 100%;
    min-height: 0;
    box-shadow: none;
  }
}

@media (max-width: 620px) {
  body {
    font-size: 16.5px;
  }

  .book-page {
    padding: 2.8rem 1.35rem;
  }

  .book-running-head {
    padding: 0 1rem;
  }

  .book-running-head span {
    display: none;
  }

  .book-title-sheet {
    min-height: 28rem;
    grid-template-columns: 1fr;
  }

  .book-title-glyph {
    display: none;
  }

  pre {
    margin-right: -0.5rem;
    margin-left: -0.5rem;
    padding: 1rem;
    font-size: 0.71rem;
  }

  table {
    display: block;
    overflow-x: auto;
    white-space: nowrap;
  }
}

@media print {
  @page {
    size: 6in 9in;
    margin: 0.72in 0.68in 0.78in;
  }

  body {
    background: #fff;
    color: #000;
    font-size: 10.5pt;
    line-height: 1.48;
  }

  .book-shell {
    display: block;
  }

  .book-rail,
  .book-running-head,
  .book-progress,
  .book-colophon,
  .book-manuscript > p:first-child {
    display: none;
  }

  .book-page {
    width: auto;
    min-height: 0;
    margin: 0;
    padding: 0;
    box-shadow: none;
  }

  .book-manuscript {
    max-width: none;
  }

  h1 {
    break-before: page;
    font-size: 30pt;
  }

  h2 {
    break-after: avoid;
  }

  pre,
  table,
  blockquote {
    break-inside: avoid;
  }

  a {
    color: inherit;
    text-decoration: none;
  }
}