:root {
  --bg: #f3ece3;
  --bg-deep: #e9dfd2;
  --paper: rgba(255, 252, 247, 0.92);
  --paper-strong: #fffdf8;
  --ink: #1f2430;
  --muted: #6a6862;
  --line: rgba(31, 36, 48, 0.14);
  --line-strong: rgba(31, 36, 48, 0.22);
  --accent: #0e5a67;
  --accent-soft: rgba(14, 90, 103, 0.1);
  --accent-warm: #a35e2f;
  --shadow: 0 24px 60px rgba(41, 39, 34, 0.08);
  --radius: 28px;
  --content-width: 760px;
  --sidebar-width: 300px;
  --sans: "Avenir Next", "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", sans-serif;
  --serif: "Iowan Old Style", "Palatino Linotype", "Book Antiqua", "Source Han Serif SC", "Noto Serif SC", serif;
  --mono: "SFMono-Regular", "SF Mono", Menlo, Monaco, Consolas, "Liberation Mono", monospace;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: var(--serif);
  line-height: 1.86;
  background:
    radial-gradient(circle at top left, rgba(163, 94, 47, 0.08), transparent 28%),
    radial-gradient(circle at top right, rgba(14, 90, 103, 0.12), transparent 24%),
    linear-gradient(180deg, #faf6ef 0%, var(--bg) 44%, var(--bg-deep) 100%);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(rgba(255, 255, 255, 0.16), rgba(255, 255, 255, 0.16)),
    repeating-linear-gradient(
      90deg,
      transparent 0,
      transparent 72px,
      rgba(31, 36, 48, 0.015) 72px,
      rgba(31, 36, 48, 0.015) 73px
    );
  opacity: 0.7;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

img {
  display: block;
  max-width: 100%;
}

button {
  font: inherit;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 60;
  backdrop-filter: blur(18px);
  background: rgba(248, 243, 236, 0.84);
  border-bottom: 1px solid rgba(31, 36, 48, 0.08);
}

.topbar-inner {
  max-width: 1440px;
  margin: 0 auto;
  padding: 16px 28px;
  display: flex;
  align-items: center;
  gap: 24px;
}

.brand {
  min-width: 0;
  display: flex;
  align-items: center;
  gap: 14px;
  color: var(--ink);
}

.brand:hover {
  text-decoration: none;
}

.brand strong {
  display: block;
  font-size: 1rem;
  line-height: 1.3;
}

.brand small {
  display: block;
  margin-top: 2px;
  color: var(--muted);
  font-family: var(--sans);
  font-size: 12px;
}

.brand-mark {
  flex: none;
  width: 14px;
  height: 14px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--accent) 0%, #3c8191 100%);
  box-shadow: 0 0 0 7px rgba(14, 90, 103, 0.12);
}

.topnav {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 16px;
  font-family: var(--sans);
  font-size: 14px;
}

.topnav a {
  color: var(--ink);
  opacity: 0.82;
}

.topnav a[aria-current="page"] {
  opacity: 1;
  font-weight: 700;
}

.topnav .lang-switch {
  padding: 6px 10px;
  border: 1px solid rgba(31, 36, 48, 0.12);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.7);
  opacity: 1;
  font-weight: 700;
}

.sidebar-toggle {
  display: none;
  margin-left: auto;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.72);
  color: var(--ink);
  border-radius: 999px;
  padding: 10px 14px;
  font-family: var(--sans);
  font-size: 14px;
  font-weight: 700;
}

.progress {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 90;
  width: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), #7bb0a4, var(--accent-warm));
}

.eyebrow,
.chapter-kicker,
.catalog-index,
.path-label {
  color: var(--accent);
  font-family: var(--sans);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  border-radius: 999px;
  padding: 12px 18px;
  font-family: var(--sans);
  font-size: 14px;
  font-weight: 700;
  border: 1px solid transparent;
  transition: transform 180ms ease, background-color 180ms ease, border-color 180ms ease;
}

.button:hover {
  transform: translateY(-1px);
  text-decoration: none;
}

.button.primary {
  background: linear-gradient(135deg, var(--accent) 0%, #2e7881 100%);
  color: #fff;
  box-shadow: 0 18px 40px rgba(14, 90, 103, 0.22);
}

.button.secondary {
  background: rgba(255, 255, 255, 0.82);
  color: var(--ink);
  border-color: rgba(31, 36, 48, 0.12);
}

.button.ghost {
  background: transparent;
  border-color: transparent;
  color: var(--muted);
}

.meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.badge {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  padding: 8px 12px;
  border: 1px solid rgba(31, 36, 48, 0.1);
  background: rgba(255, 255, 255, 0.72);
  font-family: var(--sans);
  font-size: 13px;
  font-weight: 700;
  color: #24424b;
}

.reader-shell,
.cover {
  position: relative;
  z-index: 1;
}

.reader-shell {
  max-width: 1440px;
  margin: 0 auto;
  padding: 28px;
  display: grid;
  grid-template-columns: var(--sidebar-width) minmax(0, 1fr);
  gap: 44px;
}

.sidebar {
  position: sticky;
  top: 92px;
  align-self: start;
}

.sidebar-inner {
  background: rgba(255, 252, 247, 0.72);
  border: 1px solid rgba(31, 36, 48, 0.1);
  box-shadow: var(--shadow);
  border-radius: calc(var(--radius) + 2px);
  padding: 24px 22px 22px;
}

.sidebar-intro h1 {
  margin: 8px 0 10px;
  font-size: 26px;
  line-height: 1.18;
}

.sidebar-intro p {
  margin: 0;
  color: var(--muted);
  font-family: var(--sans);
  font-size: 14px;
  line-height: 1.65;
}

.sidebar-nav {
  margin-top: 24px;
  display: flex;
  flex-direction: column;
}

.sidebar-nav a {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 10px 12px;
  border-radius: 14px;
  color: var(--ink);
  font-family: var(--sans);
  font-size: 14px;
  line-height: 1.5;
  transition: background-color 180ms ease, color 180ms ease, transform 180ms ease;
}

.sidebar-nav a:hover,
.sidebar-nav a.active {
  text-decoration: none;
  background: rgba(14, 90, 103, 0.1);
  color: #103a44;
  transform: translateX(2px);
}

.chapter-no {
  flex: none;
  width: 28px;
  color: var(--accent);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.12em;
}

.sidebar-actions {
  margin-top: 20px;
  display: grid;
  gap: 10px;
}

.sidebar-scrim {
  display: none;
}

.content {
  min-width: 0;
}

.manuscript-root {
  min-width: 0;
}

.hero-book,
.cover-hero {
  border: 1px solid rgba(31, 36, 48, 0.08);
  border-radius: calc(var(--radius) + 6px);
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.92) 0%, rgba(255, 251, 246, 0.82) 100%);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.hero-book,
.cover-hero {
  padding: 44px 48px;
}

.hero-book-grid,
.cover-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.62fr) minmax(280px, 0.78fr);
  gap: 34px;
}

.hero-book h1,
.cover-hero h1 {
  margin: 12px 0 10px;
  font-size: clamp(2.2rem, 4.1vw, 3.5rem);
  line-height: 1.08;
  letter-spacing: -0.025em;
}

.cover-sub {
  margin: 0;
  color: var(--muted);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.7;
}

.lead,
.cover-lead {
  margin: 18px 0 0;
  font-size: 1.22rem;
  line-height: 1.85;
  max-width: 38rem;
}

.hero-bridge {
  margin: 14px 0 0;
  color: var(--muted);
  font-family: var(--sans);
  max-width: 38rem;
}

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

.hero-book .meta-row,
.cover-hero .meta-row {
  margin-top: 20px;
}

.hero-aside,
.cover-summary {
  align-self: end;
  padding: 20px 22px 22px;
  border: 1px solid rgba(31, 36, 48, 0.08);
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.74);
}

.hero-aside h2,
.cover-summary h2 {
  margin: 0 0 12px;
  font-size: 1.25rem;
}

.question-list {
  margin: 0;
  padding-left: 1.3rem;
}

.question-list li {
  margin-bottom: 10px;
  font-family: var(--sans);
  line-height: 1.7;
}

.pretext-ready {
  position: relative;
  display: block;
}

.pretext-lines {
  position: relative;
  display: block;
  max-width: 100%;
  overflow: visible;
}

.pretext-line {
  position: absolute;
  inset: 0 auto auto 0;
  display: block;
  white-space: pre;
  z-index: 0;
  transform-origin: left center;
}

.pretext-sr {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.pretext-mode-poster {
  padding-bottom: 0.28rem;
}

.pretext-mode-poster .pretext-lines,
.pretext-mode-chapter .pretext-lines {
  isolation: isolate;
}

.pretext-mode-poster .pretext-line,
.pretext-mode-chapter .pretext-line,
.pretext-mode-catalog .pretext-line,
.pretext-mode-aside .pretext-line {
  font-kerning: normal;
  text-wrap: nowrap;
}

.pretext-mode-poster .pretext-line::before,
.pretext-mode-chapter .pretext-line::before,
.pretext-mode-catalog .pretext-line::before,
.pretext-mode-aside .pretext-line::before {
  content: "";
  position: absolute;
  inset: 0.08em -0.34em 0.16em -0.26em;
  z-index: -1;
  border-radius: 0.48em;
  transform: rotate(var(--pretext-rotation, 0deg));
}

.pretext-mode-poster .pretext-line::before {
  background:
    linear-gradient(135deg, rgba(14, 90, 103, 0.12) 0%, rgba(255, 255, 255, 0.78) 88%);
  box-shadow: 0 8px 18px rgba(14, 90, 103, 0.07);
}

.pretext-mode-poster .pretext-line:nth-child(2n)::before {
  background:
    linear-gradient(135deg, rgba(163, 94, 47, 0.12) 0%, rgba(255, 255, 255, 0.82) 88%);
}

.pretext-mode-chapter .pretext-line::before {
  inset: 0.12em -0.24em 0.18em -0.18em;
  background:
    linear-gradient(135deg, rgba(14, 90, 103, 0.08) 0%, rgba(255, 255, 255, 0.74) 86%);
}

.pretext-mode-chapter .pretext-line::after {
  content: "";
  position: absolute;
  left: -0.28rem;
  right: -0.75rem;
  bottom: 0.02em;
  height: 1px;
  background: linear-gradient(90deg, rgba(14, 90, 103, 0.32), rgba(14, 90, 103, 0));
}

.pretext-mode-catalog .pretext-line::before {
  inset: 0.14em -0.18em 0.16em -0.14em;
  background: rgba(14, 90, 103, 0.08);
}

.pretext-mode-summary .pretext-line::before {
  content: "";
  position: absolute;
  left: -0.8rem;
  width: calc(100% + 0.8rem);
  bottom: 0.06em;
  height: 1px;
  background: linear-gradient(90deg, rgba(14, 90, 103, 0.16), rgba(14, 90, 103, 0));
}

.pretext-mode-aside .pretext-line::before {
  inset: 0.14em -0.18em 0.14em -0.12em;
  background: rgba(163, 94, 47, 0.1);
}

.reading-paths {
  margin-top: 28px;
  padding: 18px 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.reading-paths article {
  padding: 0 18px 0 0;
  border-right: 1px solid rgba(31, 36, 48, 0.12);
}

.reading-paths article:last-child {
  border-right: 0;
  padding-right: 0;
}

.reading-paths h2 {
  margin: 10px 0 10px;
  font-size: 1.45rem;
}

.reading-paths p {
  margin: 0;
  color: var(--muted);
  font-family: var(--sans);
}

.chapter {
  padding: 40px 0 46px;
  border-top: 1px solid rgba(31, 36, 48, 0.12);
}

.chapter:first-of-type {
  margin-top: 24px;
}

.chapter-head {
  max-width: var(--content-width);
}

.chapter-kicker {
  margin-bottom: 12px;
}

.chapter h2 {
  margin: 0;
  font-size: clamp(2rem, 3.5vw, 3.2rem);
  line-height: 1.12;
  letter-spacing: -0.02em;
}

.chapter-summary {
  margin: 16px 0 0;
  max-width: 44rem;
  color: var(--muted);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.8;
}

.chapter-body {
  max-width: var(--content-width);
  margin-top: 28px;
}

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

.chapter-body h3 {
  margin-top: 34px;
  margin-bottom: 12px;
  font-size: 1.95rem;
  line-height: 1.24;
}

.chapter-body h4 {
  margin-top: 24px;
  margin-bottom: 8px;
  font-size: 1.35rem;
}

.chapter-body p,
.chapter-body li,
.chapter-body td,
.chapter-body th,
.chapter-body blockquote {
  font-size: 1.08rem;
}

.chapter-body p,
.chapter-body ul,
.chapter-body ol,
.chapter-body table,
.chapter-body figure,
.chapter-body pre,
.chapter-body .callout,
.chapter-body .example-box,
.chapter-body .takeaways {
  margin-top: 18px;
  margin-bottom: 0;
}

.chapter-body ul,
.chapter-body ol {
  padding-left: 1.4em;
}

.chapter-body li + li {
  margin-top: 0.45em;
}

.chapter-body p code,
.chapter-body li code,
.chapter-body td code,
.chapter-body th code,
.cover code {
  padding: 2px 7px;
  border-radius: 8px;
  border: 1px solid rgba(31, 36, 48, 0.08);
  background: rgba(14, 90, 103, 0.08);
  font-family: var(--mono);
  font-size: 0.92em;
}

.chapter-body pre {
  overflow: auto;
  padding: 20px 22px;
  border-radius: 24px;
  background: #18212a;
  color: #f4f7fb;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.06);
}

.chapter-body pre code {
  padding: 0;
  border: 0;
  background: transparent;
  color: inherit;
  font-size: 0.9rem;
}

.chapter-body table {
  width: 100%;
  border-collapse: collapse;
  border: 1px solid rgba(31, 36, 48, 0.1);
  background: rgba(255, 255, 255, 0.6);
}

.chapter-body th,
.chapter-body td {
  padding: 12px 14px;
  border-bottom: 1px solid rgba(31, 36, 48, 0.08);
  border-right: 1px solid rgba(31, 36, 48, 0.08);
  vertical-align: top;
}

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

.chapter-body th:last-child,
.chapter-body td:last-child {
  border-right: 0;
}

.chapter-body th {
  text-align: left;
  font-family: var(--sans);
  background: rgba(163, 94, 47, 0.08);
}

html[lang="en"] {
  hyphens: auto;
}

html[lang="en"] .brand strong,
html[lang="en"] .brand small,
html[lang="en"] .cover-sub,
html[lang="en"] .cover-lead,
html[lang="en"] .hero-bridge,
html[lang="en"] .question-list li,
html[lang="en"] .panel li,
html[lang="en"] .catalog-entry p,
html[lang="en"] .sidebar-nav a span:last-child,
html[lang="en"] .chapter-summary,
html[lang="en"] .chapter-body p,
html[lang="en"] .chapter-body li,
html[lang="en"] .chapter-body td,
html[lang="en"] .chapter-body th,
html[lang="en"] .chapter-body blockquote,
html[lang="en"] .reading-paths p {
  overflow-wrap: anywhere;
  word-break: normal;
}

html[lang="en"] .hero-book-grid,
html[lang="en"] .cover-hero-grid {
  grid-template-columns: minmax(0, 1.32fr) minmax(300px, 0.88fr);
}

html[lang="en"] .hero-book h1,
html[lang="en"] .cover-hero h1 {
  font-size: clamp(2.1rem, 3.6vw, 3.2rem);
  line-height: 1.12;
  letter-spacing: -0.02em;
}

html[lang="en"] .chapter h2 {
  font-size: clamp(1.8rem, 2.8vw, 2.7rem);
  line-height: 1.18;
}

html[lang="en"] .chapter-summary {
  max-width: 48rem;
}

html[lang="en"] .sidebar-nav a,
html[lang="en"] .button,
html[lang="en"] .badge {
  font-family: var(--sans);
}

html[lang="en"] .sidebar-nav a {
  align-items: flex-start;
}

html[lang="en"] .catalog-grid {
  grid-template-columns: 1fr;
}

html[lang="en"] .catalog-entry h3,
html[lang="en"] .reading-paths h2 {
  line-height: 1.3;
  overflow-wrap: anywhere;
}

.chapter-body blockquote {
  padding: 6px 0 6px 18px;
  border-left: 3px solid rgba(14, 90, 103, 0.35);
  color: #2f3b45;
}

.figure img,
.visual-grid img {
  border-radius: 24px;
  border: 1px solid rgba(31, 36, 48, 0.08);
  background: #fff;
  box-shadow: var(--shadow);
}

.figure figcaption {
  margin-top: 10px;
  color: var(--muted);
  font-family: var(--sans);
  font-size: 14px;
}

.callout,
.example-box,
.takeaways {
  padding: 18px 20px;
  border-radius: 22px;
  border: 1px solid rgba(31, 36, 48, 0.1);
  font-family: var(--sans);
}

.callout.pm {
  background: rgba(14, 90, 103, 0.08);
}

.callout.source {
  background: rgba(163, 94, 47, 0.08);
}

.example-box {
  background: rgba(94, 126, 96, 0.08);
}

.takeaways {
  background: rgba(255, 255, 255, 0.64);
}

.appendix .chapter-body h3 {
  margin-top: 38px;
}

.cover {
  max-width: 1360px;
  margin: 0 auto;
  padding: 36px 28px 72px;
}

.cover-grid {
  margin-top: 28px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}

.panel {
  padding: 22px 22px 24px;
  border-top: 1px solid var(--line-strong);
  border-bottom: 1px solid rgba(31, 36, 48, 0.08);
  background: rgba(255, 252, 247, 0.46);
}

.panel h2 {
  margin: 0 0 14px;
  font-size: 1.45rem;
}

.panel ul {
  margin: 0;
  padding-left: 1.25rem;
}

.catalog,
.cover-visuals {
  margin-top: 38px;
}

.section-head {
  max-width: 42rem;
}

.section-head h2 {
  margin: 0 0 8px;
  font-size: 2rem;
}

.section-head p {
  margin: 0;
  color: var(--muted);
  font-family: var(--sans);
  line-height: 1.8;
}

.catalog-grid {
  margin-top: 22px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px 24px;
}

.catalog-entry {
  display: block;
  padding: 18px 0 0;
  border-top: 1px solid rgba(31, 36, 48, 0.12);
  color: var(--ink);
}

.catalog-entry:hover {
  text-decoration: none;
}

.catalog-entry h3 {
  margin: 10px 0 8px;
  font-size: 1.42rem;
  line-height: 1.28;
}

.catalog-entry p {
  margin: 0;
  color: var(--muted);
  font-family: var(--sans);
}

.visual-grid {
  margin-top: 22px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.cover-footer-note {
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid rgba(31, 36, 48, 0.12);
  color: var(--muted);
  font-family: var(--sans);
}

body.js-ready .reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 560ms ease, transform 560ms ease;
}

body.js-ready .reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 1180px) {
  .reader-shell {
    grid-template-columns: minmax(0, 1fr);
  }

  .sidebar {
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    z-index: 75;
    width: min(88vw, 340px);
    transform: translateX(calc(-100% - 24px));
    transition: transform 220ms ease;
    padding: 18px;
    background: rgba(243, 236, 227, 0.7);
    backdrop-filter: blur(16px);
  }

  .book-page.sidebar-open .sidebar {
    transform: translateX(0);
  }

  .sidebar-inner {
    height: 100%;
    overflow: auto;
  }

  .sidebar-toggle {
    display: inline-flex;
  }

  .sidebar-scrim {
    position: fixed;
    inset: 0;
    z-index: 70;
    display: block;
    border: 0;
    padding: 0;
    background: rgba(17, 22, 29, 0.24);
    opacity: 0;
    pointer-events: none;
    transition: opacity 220ms ease;
  }

  .book-page.sidebar-open .sidebar-scrim {
    opacity: 1;
    pointer-events: auto;
  }

  .hero-book-grid,
  .cover-hero-grid,
  .cover-grid,
  .catalog-grid,
  .visual-grid,
  .reading-paths {
    grid-template-columns: 1fr;
  }

  .reading-paths article {
    padding: 0 0 18px;
    border-right: 0;
    border-bottom: 1px solid rgba(31, 36, 48, 0.12);
  }

  .reading-paths article:last-child {
    padding-bottom: 0;
    border-bottom: 0;
  }

  .topbar-inner {
    flex-wrap: wrap;
  }
}

@media (max-width: 760px) {
  .topbar-inner,
  .reader-shell,
  .cover {
    padding-left: 16px;
    padding-right: 16px;
  }

  .reader-shell {
    gap: 28px;
    padding-top: 20px;
    padding-bottom: 56px;
  }

  .hero-book,
  .cover-hero {
    padding: 26px 24px;
  }

  .hero-book h1,
  .cover-hero h1 {
    font-size: 2.1rem;
  }

  .chapter {
    padding-top: 30px;
    padding-bottom: 34px;
  }

  .chapter h2 {
    font-size: 2rem;
  }

  .chapter-body h3 {
    font-size: 1.55rem;
  }

  .chapter-body p,
  .chapter-body li,
  .chapter-body td,
  .chapter-body th,
  .chapter-body blockquote {
    font-size: 1rem;
  }

  .chapter-body pre {
    padding: 18px;
    border-radius: 20px;
  }

  .topnav {
    width: 100%;
    justify-content: space-between;
    gap: 12px;
  }

  .brand {
    width: 100%;
  }
}

@media print {
  body {
    background: #fff;
  }

  body::before,
  .topbar,
  .progress,
  .sidebar,
  .sidebar-scrim,
  .sidebar-toggle,
  .hero-actions,
  .cover-actions {
    display: none !important;
  }

  .reader-shell,
  .cover {
    display: block;
    max-width: none;
    padding: 0;
  }

  .hero-book,
  .cover-hero,
  .panel {
    background: transparent;
    border: 0;
    box-shadow: none;
    padding: 0;
  }

  .chapter {
    page-break-inside: avoid;
    padding: 18px 0 24px;
  }

  .chapter-body pre,
  .figure img,
  .visual-grid img {
    box-shadow: none;
  }
}