/* Self-hosted fonts (latin subsets, variable weight) ---------------- */

@font-face {
  font-family: "Literata";
  src: url("../assets/fonts/literata.woff2") format("woff2");
  font-weight: 400 700;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Literata";
  src: url("../assets/fonts/literata-italic.woff2") format("woff2");
  font-weight: 400 700;
  font-style: italic;
  font-display: swap;
}

@font-face {
  font-family: "Inter";
  src: url("../assets/fonts/inter.woff2") format("woff2");
  font-weight: 400 700;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "JetBrains Mono";
  src: url("../assets/fonts/jetbrains-mono.woff2") format("woff2");
  font-weight: 400 600;
  font-style: normal;
  font-display: swap;
}

:root {
  --content-max-width: 780px;
  --sidebar-target-width: 318px;
  --page-padding: 28px;
  --menu-bar-height: 58px;
  --space-1: 6px;
  --space-2: 10px;
  --space-3: 16px;
  --space-4: 24px;
  --space-5: 32px;
  --space-6: 48px;
  --space-7: 80px;
  --body-font: "Literata", Charter, "Bitstream Charter", Georgia, serif;
  --utility-font: "Inter", system-ui, -apple-system, sans-serif;
  --mono-font: "JetBrains Mono", ui-monospace, "SF Mono", Consolas, monospace;
  --signal: #2458d3;
  --signal-deep: #193b8f;
  --signal-soft: #e8eefc;
  --signal-faint: rgba(36, 88, 211, 0.11);
  --paper: #fbfcfe;
  --ink: #172033;
  --rule: #d9e1f0;
}

.light,
.rust,
.coal,
.navy,
.ayu,
html:not(.js) {
  color-scheme: light;
  --bg: var(--paper);
  --fg: var(--ink);
  --sidebar-bg: #f3f6fc;
  --sidebar-fg: #3b465d;
  --sidebar-non-existant: #8b96aa;
  --sidebar-active: var(--signal-deep);
  --sidebar-spacer: var(--rule);
  --scrollbar: #8b96aa;
  --icons: #66728a;
  --icons-hover: var(--signal-deep);
  --links: var(--signal);
  --inline-code-color: var(--signal-deep);
  --theme-popup-bg: #ffffff;
  --theme-popup-border: var(--rule);
  --theme-hover: var(--signal-soft);
  --quote-bg: #f0f4fd;
  --quote-border: var(--signal);
  --table-border-color: var(--rule);
  --table-header-bg: #eaf0fc;
  --table-alternate-bg: #f6f8fd;
  --searchbar-border-color: #b9c4d9;
  --searchbar-bg: #ffffff;
  --searchbar-fg: var(--ink);
  --searchbar-shadow-color: rgba(36, 88, 211, 0.18);
  --searchresults-header-fg: #4e5a72;
  --searchresults-border-color: var(--rule);
  --searchresults-li-bg: #edf2fd;
  --search-mark-bg: #cbd8fa;
  --surface-raised: #ffffff;
  --code-surface: #111b31;
  --code-ink: #edf2ff;
}

html {
  scroll-padding-top: calc(var(--menu-bar-height) + 24px);
}

@media (prefers-reduced-motion: no-preference) {
  html {
    scroll-behavior: smooth;
  }
}

body {
  font-family: var(--body-font);
  font-size: 17.5px;
  font-optical-sizing: auto;
  font-kerning: normal;
  text-rendering: optimizeLegibility;
}

::selection {
  background: rgba(36, 88, 211, 0.2);
}

.menu-bar,
.sidebar,
.nav-chapters,
.theme-popup,
.searchbar-outer,
.searchresults-outer {
  font-family: var(--utility-font);
}

.menu-bar {
  border-bottom: 1px solid var(--sidebar-spacer);
  background: color-mix(in srgb, var(--paper) 97%, var(--signal));
}

.menu-title {
  color: var(--fg);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.icon-button,
.right-buttons a {
  border-radius: 8px;
}

.icon-button:hover,
.right-buttons a:hover {
  background: var(--signal-faint);
}

#mdbook-theme-toggle,
.theme-popup {
  display: none !important;
}

.sidebar {
  border-right: 1px solid var(--sidebar-spacer);
  font-size: 13.5px;
  letter-spacing: -0.005em;
}

.sidebar .sidebar-scrollbox {
  padding: 24px 18px 40px;
}

.sidebar ol.chapter li.chapter-item {
  margin: 2px 0;
}

.sidebar ol.chapter li.chapter-item a {
  border-left: 2px solid transparent;
  border-radius: 0 7px 7px 0;
  padding: 6px 10px;
  line-height: 1.4;
}

.sidebar ol.section li.chapter-item {
  margin-block: 0;
}

.sidebar ol.section li.chapter-item a {
  padding-block: 4px;
  line-height: 1.34;
}

.sidebar ol.chapter li.chapter-item a:hover {
  background: var(--signal-faint);
  color: var(--fg);
}

.sidebar ol.chapter li.chapter-item a.active {
  border-left-color: var(--signal);
  background: var(--signal-faint);
  color: var(--sidebar-active);
  font-weight: 600;
}

.sidebar .part-title {
  display: none;
}

.sidebar .part-title.standalone-divider {
  display: block;
  margin-top: 20px;
  padding: 6px 10px 4px;
  color: var(--signal);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.07em;
  line-height: 1.34;
  text-transform: uppercase;
  opacity: 0.85;
}

.sidebar a.divider-link {
  margin-top: 20px;
  color: var(--signal);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  opacity: 0.85;
}

.sidebar a.divider-link.active {
  border-left-color: var(--signal);
  color: var(--signal-deep);
}

.content main {
  padding-block: var(--space-6) var(--space-7);
}

main {
  color: var(--fg);
}

.content main p,
.content main li {
  line-height: 1.68;
}

.content main p {
  margin: 0 0 0.95em;
  text-wrap: pretty;
}

.content main li {
  margin-block: 0.32em;
}

.content main li > p {
  margin-block: 0.25em;
}

.content main ul,
.content main ol {
  margin-block: 0.9em;
}

.content main h2 + p,
.content main h3 + p,
.content main h2 + ul,
.content main h3 + ul,
.content main h2 + ol,
.content main h3 + ol {
  margin-top: 0;
}

.content main h1,
.content main h2,
.content main h3,
.content main h4 {
  font-family: var(--utility-font);
  color: var(--fg);
  text-wrap: balance;
}

.content main h1 {
  margin: 0 0 1.1rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--sidebar-spacer);
  font-size: clamp(36px, 3.9vw, 48px);
  font-weight: 650;
  letter-spacing: -0.04em;
  line-height: 1.06;
}

.opening-eyebrow {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0 0 0.65rem;
  color: var(--signal);
  font-family: var(--mono-font);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.15em;
  line-height: 1.3;
  white-space: nowrap;
}

.opening-eyebrow::after {
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, color-mix(in srgb, var(--signal) 45%, transparent), transparent);
  content: "";
}

.content main h1 + p,
.has-opener .opening-eyebrow + h1 + p {
  color: color-mix(in srgb, var(--fg) 88%, var(--bg));
  font-size: 19px;
  line-height: 1.62;
}

.content main h2 {
  margin-top: 3rem;
  margin-bottom: 0.8rem;
  font-size: 25px;
  font-weight: 650;
  letter-spacing: -0.025em;
  line-height: 1.2;
}

.content main h3 {
  margin-top: 1.7rem;
  margin-bottom: 0.55rem;
  color: color-mix(in srgb, var(--fg) 88%, var(--signal));
  font-size: 19px;
  font-weight: 650;
  letter-spacing: -0.015em;
}

a {
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.16em;
}

main a:not(.header) {
  text-decoration-color: color-mix(in srgb, var(--links) 40%, transparent);
}

main a:not(.header):hover {
  text-decoration-color: var(--links);
}

a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--signal) 55%, transparent);
  outline-offset: 3px;
}

main strong {
  font-weight: 650;
}

main blockquote {
  margin: 1.7rem 0;
  padding: 1.05rem 1.3rem 1.05rem 1.5rem;
  border: 0;
  border-left: 4px solid var(--quote-border);
  border-radius: 0 10px 10px 0;
  background: var(--quote-bg);
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--quote-border) 14%, transparent);
  color: var(--fg);
}

main blockquote p:first-child {
  margin-top: 0;
}

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

code {
  font-family: var(--mono-font);
  font-size: 0.82em;
}

:not(pre) > code {
  padding: 0.13em 0.36em;
  border: 1px solid color-mix(in srgb, var(--signal) 18%, var(--sidebar-spacer));
  border-radius: 5px;
  background: color-mix(in srgb, var(--signal) 7%, var(--bg));
}

.content main pre {
  margin: 1.4rem 0;
  padding: 1.1rem 1.25rem;
  border: 1px solid color-mix(in srgb, var(--signal) 38%, #000000);
  border-top: 3px solid var(--signal);
  border-radius: 8px;
  background: var(--code-surface);
  box-shadow: 0 12px 28px rgba(13, 24, 42, 0.12);
  color: var(--code-ink);
  line-height: 1.62;
}

.content main pre code {
  background: transparent !important;
  color: inherit;
  font-size: 13px;
}

.diagram-figure {
  position: relative;
  margin: 1.75rem 0 2rem;
}

.diagram-box {
  padding: 22px 18px;
  overflow: hidden;
  border: 1px solid var(--table-border-color);
  border-top: 3px solid var(--signal);
  border-radius: 8px;
  background-color: var(--surface-raised);
  background-image:
    linear-gradient(rgba(36, 88, 211, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(36, 88, 211, 0.045) 1px, transparent 1px);
  background-size: 24px 24px;
  box-shadow: 0 12px 30px rgba(25, 59, 143, 0.08);
  text-align: center;
}

.block-diagram {
  display: block;
  width: 100%;
  margin: 0 auto;
  max-width: 100%;
  height: auto;
  overflow: visible;
}

.block-node rect,
.block-node polygon {
  fill: var(--surface-raised);
  stroke: var(--signal);
  stroke-width: 1.4px;
  vector-effect: non-scaling-stroke;
}

.block-node-decision polygon {
  fill: var(--signal-soft);
}

.block-node-label {
  fill: var(--fg);
  font-family: var(--utility-font);
  font-size: 13px;
  font-weight: 500;
}

.block-edge {
  stroke: var(--signal);
  stroke-width: 1.35px;
  stroke-linecap: round;
  stroke-linejoin: round;
  vector-effect: non-scaling-stroke;
}

.block-edge-dotted {
  stroke-dasharray: 4 4;
}

.block-edge-line {
  stroke: color-mix(in srgb, var(--signal) 58%, var(--rule));
}

.block-diagram marker path {
  fill: var(--signal);
}

.block-edge-label rect {
  fill: var(--surface-raised);
  opacity: 0.97;
}

.block-edge-text {
  fill: color-mix(in srgb, var(--fg) 76%, var(--signal));
  font-family: var(--utility-font);
  font-size: 11px;
  font-weight: 500;
}

.block-group {
  fill: color-mix(in srgb, var(--signal) 4%, var(--surface-raised));
  stroke: color-mix(in srgb, var(--signal) 38%, var(--rule));
  stroke-width: 1px;
  stroke-dasharray: 4 3;
  vector-effect: non-scaling-stroke;
}

.block-group-label {
  fill: var(--signal-deep);
  font-family: var(--mono-font);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.diagram-figure figcaption {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  margin-top: 0.55rem;
  color: color-mix(in srgb, var(--fg) 62%, var(--bg));
  font-family: var(--utility-font);
  font-size: 12.5px;
  line-height: 1.5;
  text-align: left;
}

.diagram-figure .fig-label {
  flex: none;
  color: var(--signal);
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.diagram-error {
  color: var(--fg);
  font-family: var(--mono-font);
  font-size: 13px;
  text-align: left;
  white-space: pre-wrap;
}

/* Book cover -------------------------------------------------------- */

.content main.book-home {
  --content-max-width: 1080px;
  display: flex;
  box-sizing: border-box;
  min-height: calc(100vh - var(--menu-bar-height));
  max-width: var(--content-max-width);
  padding-block: 42px 54px;
  flex-direction: column;
  justify-content: center;
}

.book-cover {
  position: relative;
  isolation: isolate;
  display: flex;
  align-items: center;
  width: 100%;
  min-height: clamp(580px, 72vh, 720px);
  overflow: hidden;
}

.book-cover::before {
  position: absolute;
  z-index: -2;
  top: 50%;
  right: -28px;
  width: min(72%, 760px);
  aspect-ratio: 18 / 19;
  background: url("../assets/cover-system-map.svg") center / contain no-repeat;
  content: "";
  opacity: 0.68;
  transform: translateY(-50%);
}

.book-cover::after {
  position: absolute;
  z-index: -1;
  inset: 0;
  background: linear-gradient(
    90deg,
    var(--bg) 0%,
    color-mix(in srgb, var(--bg) 98%, transparent) 36%,
    color-mix(in srgb, var(--bg) 82%, transparent) 57%,
    transparent 78%
  );
  content: "";
}

.cover-copy {
  position: relative;
  z-index: 1;
  max-width: 500px;
  padding-left: 10px;
}

.content main .book-cover h1 {
  margin: 0 0 24px;
  padding: 0;
  border: 0;
  font-size: clamp(58px, 6.4vw, 84px);
  letter-spacing: -0.055em;
  line-height: 0.9;
}

.book-cover h1 span {
  display: block;
}

.content main .book-cover .cover-subtitle {
  margin: 0 0 19px;
  color: var(--fg);
  font-family: var(--utility-font);
  font-size: clamp(21px, 2.2vw, 28px);
  font-weight: 650;
  letter-spacing: -0.03em;
  line-height: 1.18;
}

.content main .book-cover .cover-author {
  position: absolute;
  z-index: 1;
  bottom: clamp(26px, 5vh, 48px);
  left: 10px;
  margin: 0;
  color: var(--signal-deep);
  font-family: var(--utility-font);
  font-size: 14px;
  font-weight: 650;
  letter-spacing: 0.035em;
  line-height: 1.4;
}

.book-home .page-pager,
.book-home-page .nav-chapters,
.book-home-page .mobile-nav-chapters {
  display: none;
}

body.book-home-page #mdbook-content > .nav-wrapper {
  display: none !important;
}

body.book-home-page #mdbook-content {
  padding-bottom: 0;
}

@media (min-width: 841px) {
  .content main.book-home {
    height: calc(100dvh - var(--menu-bar-height) - 1px);
    min-height: 0;
  }

  .book-cover {
    min-height: 0;
    flex: 0 1 720px;
  }
}

/* Part-divider pages ------------------------------------------------ */

.content main.part-divider {
  min-height: 58vh;
  padding-block: 12vh 8vh;
  text-align: center;
}

.content main.part-divider h1 {
  max-width: 15em;
  margin-inline: auto;
  padding-bottom: 0;
  border-bottom: 0;
  font-size: clamp(40px, 4.6vw, 58px);
  letter-spacing: -0.04em;
}

.part-divider h1::after {
  display: block;
  width: 64px;
  height: 3px;
  margin: 1.35rem auto 0;
  background: var(--signal);
  content: "";
}

.part-divider p:not(.divider-range) {
  max-width: 36em;
  margin: 1.8rem auto 0;
  color: color-mix(in srgb, var(--fg) 78%, var(--bg));
  font-size: 19.5px;
  line-height: 1.72;
  text-wrap: balance;
}

.part-divider .divider-range {
  margin-top: 2.25rem;
  color: var(--signal);
  font-family: var(--utility-font);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.part-divider .divider-range strong {
  font-weight: inherit;
  color: inherit;
}

.table-wrapper {
  margin: 1.5rem 0;
  border: 1px solid var(--table-border-color);
  border-top: 3px solid var(--signal);
  border-radius: 8px;
  background: var(--surface-raised);
  box-shadow: 0 10px 26px rgba(25, 59, 143, 0.07);
}

.content main table {
  margin: 0;
  width: 100%;
  font-family: var(--utility-font);
  font-size: 13.5px;
  line-height: 1.5;
}

.content main table th,
.content main table td {
  padding: 0.78rem 0.9rem;
  border-color: var(--table-border-color);
}

.content main table th {
  border-bottom: 2px solid color-mix(in srgb, var(--signal) 32%, var(--table-border-color));
  background: var(--table-header-bg);
  color: var(--signal-deep);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.055em;
  text-transform: uppercase;
}

.content main table tbody tr:nth-child(even) td {
  background: var(--table-alternate-bg);
}

.content main table tbody td:first-child {
  color: color-mix(in srgb, var(--fg) 88%, var(--signal));
  font-weight: 600;
}

main hr {
  margin: 3rem 0;
  border: 0;
  border-top: 1px solid var(--sidebar-spacer);
}

/* Reading chrome ----------------------------------------------------- */

.skip-link {
  position: fixed;
  top: 10px;
  left: 12px;
  z-index: 100;
  padding: 0.55rem 1rem;
  border-radius: 8px;
  background: var(--signal);
  color: #ffffff;
  font-family: var(--utility-font);
  font-size: 13px;
  font-weight: 600;
  text-decoration: none;
  transform: translateY(-260%);
}

.skip-link:focus {
  transform: none;
}

main:focus {
  outline: none;
}

body {
  hanging-punctuation: first last;
}

#reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 60;
  width: 100%;
  height: 2px;
  background: var(--signal);
  transform: scaleX(0);
  transform-origin: 0 50%;
  pointer-events: none;
}

.content main table th,
.content main table td {
  font-variant-numeric: tabular-nums;
}

.content main table td.num {
  text-align: right;
}

.content main pre {
  position: relative;
}

.content main pre[data-lang]::before {
  position: absolute;
  top: 10px;
  right: 12px;
  padding: 0.15em 0.55em;
  border: 1px solid color-mix(in srgb, var(--code-ink) 22%, transparent);
  border-radius: 5px;
  content: attr(data-lang);
  color: color-mix(in srgb, var(--code-ink) 62%, transparent);
  font-family: var(--mono-font);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  pointer-events: none;
}

.page-pager {
  display: flex;
  gap: 14px;
  margin-top: 3.4rem;
  padding-top: 1.4rem;
  border-top: 1px solid var(--sidebar-spacer);
  font-family: var(--utility-font);
}

.page-pager .pager-empty {
  visibility: hidden;
  border: 0;
  background: transparent;
}

.page-pager .pager-prev,
.page-pager .pager-next {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 3px;
  min-width: 0;
  padding: 0.8rem 0.95rem;
  border: 1px solid var(--table-border-color);
  border-radius: 9px;
  background: var(--surface-raised);
  text-decoration: none;
  transition: border-color 140ms ease, box-shadow 140ms ease;
}

.page-pager .pager-prev:hover,
.page-pager .pager-next:hover {
  border-color: color-mix(in srgb, var(--signal) 45%, var(--table-border-color));
  box-shadow: 0 6px 16px rgba(13, 24, 42, 0.08);
}

.page-pager .pager-next {
  text-align: right;
}

.page-pager .pager-word {
  color: var(--signal);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.page-pager strong {
  overflow: hidden;
  color: var(--fg);
  font-size: 13.5px;
  font-weight: 600;
  line-height: 1.35;
  text-overflow: ellipsis;
  white-space: nowrap;
}

main a.xref {
  text-decoration-style: solid;
}

.nav-chapters {
  color: var(--sidebar-active);
  transition: background-color 140ms ease, color 140ms ease;
}

.nav-chapters:hover {
  background: var(--signal-faint);
  color: var(--fg);
}

#mdbook-searchbar {
  border-radius: 9px;
  font-family: var(--utility-font);
}

@media (max-width: 840px) {
  .content main.book-home {
    --content-max-width: 680px;
    justify-content: flex-start;
  }

  .book-cover {
    min-height: 680px;
  }

  .cover-copy {
    padding-inline: 6px;
  }

  .book-cover::before {
    right: -120px;
    width: min(94%, 650px);
    opacity: 0.54;
  }

  .book-cover::after {
    background: linear-gradient(
      90deg,
      var(--bg) 0%,
      color-mix(in srgb, var(--bg) 94%, transparent) 45%,
      color-mix(in srgb, var(--bg) 28%, transparent) 100%
    );
  }
}

@media (min-width: 1100px) {
  .diagram-figure,
  .table-wrapper {
    margin-inline: -30px;
  }
}

@media (max-width: 700px) {
  :root {
    --page-padding: 20px;
  }

  .content main {
    padding-block: var(--space-5) 64px;
  }

  .content main.book-home {
    padding-block: 28px 48px;
  }

  .book-cover {
    min-height: calc(100vh - var(--menu-bar-height) - 76px);
  }

  .book-cover::before {
    right: -230px;
    width: 640px;
    max-width: none;
    opacity: 0.48;
  }

  .book-cover::after {
    background: linear-gradient(
      90deg,
      var(--bg) 0%,
      color-mix(in srgb, var(--bg) 92%, transparent) 42%,
      color-mix(in srgb, var(--bg) 58%, transparent) 63%,
      transparent 100%
    );
  }

  .content main .book-cover .cover-author {
    bottom: 26px;
    left: 6px;
  }

  .content main .book-cover h1 {
    margin-bottom: 20px;
    font-size: 58px;
  }

  .content main .book-cover .cover-subtitle {
    margin-bottom: 16px;
    font-size: 22px;
  }

  .content main p,
  .content main li {
    line-height: 1.7;
  }

  .opening-eyebrow {
    white-space: normal;
    letter-spacing: 0.11em;
  }

  .opening-eyebrow::after {
    display: none;
  }

  .content main h1 {
    margin-bottom: 1rem;
    padding-bottom: 0.85rem;
    font-size: 35px;
  }

  .content main h1::before {
    font-size: 9.5px;
  }

  .content main h2 {
    margin-top: 2.4rem;
    margin-bottom: 0.65rem;
    font-size: 23px;
  }

  .content main pre {
    margin-block: 1.25rem;
    margin-inline: -8px;
    padding: 1rem;
    border-radius: 8px;
  }

  .diagram-figure {
    margin-block: 1.5rem 1.75rem;
  }

  .table-wrapper {
    margin-block: 1.3rem;
  }

  .content main table th,
  .content main table td {
    padding: 0.65rem 0.6rem;
  }

  .diagram-box {
    margin-inline: -8px;
    padding: 14px 10px;
  }

  .part-divider {
    padding-block: 9vh 6vh !important;
  }

  .page-pager {
    flex-direction: column;
  }

  .page-pager .pager-next {
    text-align: left;
  }
}

@media print {
  @page {
    margin: 20mm 18mm 22mm;
  }

  body {
    font-size: 10.5pt;
  }

  .content main p,
  .content main li {
    line-height: 1.55;
  }

  .content main p {
    margin-bottom: 0.75em;
  }

  .content main {
    padding: 0;
  }

  .diagram-figure,
  .table-wrapper {
    margin-inline: 0;
  }

  .opening-eyebrow {
    color: #2458d3;
  }

  main h2,
  main h3,
  main pre,
  main blockquote,
  .diagram-figure,
  .table-wrapper {
    break-inside: avoid;
  }

  main p {
    orphans: 3;
    widows: 3;
  }

  .content main pre {
    border: 1px solid #536070;
    box-shadow: none;
  }

  .content main.part-divider {
    min-height: auto;
    padding-block: 30vh 0;
  }

  .content main h1 {
    break-before: page;
  }

  #reading-progress,
  .page-pager {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}