@charset "UTF-8";

:root {
  --ink: #11110f;
  --paper: #f1ebdc;
  --paper-bright: #fffaf0;
  --paper-deep: #d8d0be;
  --red: #e63b23;
  --red-dark: #a92517;
  --acid: #d9ff43;
  --blue: #2343d8;
  --muted: #68645b;
  --line: rgba(17, 17, 15, 0.24);
  --display: "Arial Narrow", "Roboto Condensed", "Helvetica Neue", Arial, sans-serif;
  --body: Charter, "Bitstream Charter", "Sitka Text", Georgia, serif;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  --reader-scale: 1;
  --header-height: 64px;
  color-scheme: light;
}

:root[data-theme="night"] {
  --ink: #f4eee0;
  --paper: #151512;
  --paper-bright: #1e1e19;
  --paper-deep: #34332c;
  --red: #ff553a;
  --red-dark: #e63b23;
  --acid: #c9ee38;
  --blue: #7590ff;
  --muted: #aaa497;
  --line: rgba(244, 238, 224, 0.23);
  color-scheme: dark;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 28px);
  background: var(--paper);
}

body {
  margin: 0;
  min-width: 320px;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--display);
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
}

button,
input {
  font: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

button:focus-visible,
a:focus-visible,
input:focus-visible,
summary:focus-visible {
  outline: 3px solid var(--blue);
  outline-offset: 3px;
}

::selection {
  background: var(--acid);
  color: #11110f;
}

.skip-link {
  position: fixed;
  z-index: 1000;
  top: 10px;
  left: 10px;
  padding: 10px 14px;
  transform: translateY(-150%);
  background: var(--acid);
  color: #11110f;
  font: 800 13px/1 var(--display);
  text-transform: uppercase;
  text-decoration: none;
}

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

.site-header {
  position: sticky;
  z-index: 100;
  top: 0;
  height: var(--header-height);
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: stretch;
  border-bottom: 2px solid var(--ink);
  background: color-mix(in srgb, var(--paper) 94%, transparent);
  backdrop-filter: blur(14px);
}

.brand {
  display: flex;
  align-items: center;
  min-width: 132px;
  border-right: 2px solid var(--ink);
  color: var(--ink);
  font: 950 22px/1 var(--display);
  letter-spacing: -0.07em;
  text-decoration: none;
}

.brand span {
  display: grid;
  height: 100%;
  place-items: center;
  padding: 0 13px;
  transition: background 160ms ease, color 160ms ease;
}

.brand-no {
  background: var(--red);
  color: #11110f;
}

.brand-alt {
  flex: 1;
}

.brand:hover .brand-no {
  background: var(--acid);
}

.brand:hover .brand-alt {
  background: var(--ink);
  color: var(--paper);
}

.global-nav {
  display: flex;
  align-items: stretch;
  justify-content: flex-start;
}

.global-nav a {
  display: flex;
  align-items: center;
  padding: 0 22px;
  border-right: 1px solid var(--line);
  font: 800 12px/1 var(--display);
  letter-spacing: 0.08em;
  text-decoration: none;
  text-transform: uppercase;
}

.global-nav a:hover {
  background: var(--ink);
  color: var(--paper);
}

.reader-tools {
  display: flex;
  align-items: stretch;
  border-left: 2px solid var(--ink);
}

.reader-tools button {
  min-width: 48px;
  border: 0;
  border-left: 1px solid var(--line);
  background: transparent;
  color: var(--ink);
  cursor: pointer;
  font: 850 12px/1 var(--display);
  text-transform: uppercase;
}

.reader-tools button:first-child {
  border-left: 0;
}

.reader-tools button:hover {
  background: var(--acid);
  color: #11110f;
}

.reader-tools .theme-toggle {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 0 16px;
}

.theme-toggle > span:first-child {
  font-size: 20px;
}

.poster-hero {
  position: relative;
  min-height: calc(100svh - var(--header-height));
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(300px, 0.8fr);
  overflow: hidden;
  border-bottom: 3px solid var(--ink);
  background:
    linear-gradient(115deg, transparent 0 59%, color-mix(in srgb, var(--red) 16%, transparent) 59% 60%, transparent 60%),
    var(--paper);
}

.poster-grain {
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.13;
  background-image: radial-gradient(var(--ink) 0.75px, transparent 0.75px);
  background-size: 7px 7px;
  mask-image: linear-gradient(90deg, #000, transparent 78%);
}

.hero-copy {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(48px, 7vw, 104px) clamp(24px, 5vw, 84px);
}

.edition-line {
  display: flex;
  align-items: center;
  gap: 14px;
  margin: 0 0 24px;
  font: 850 12px/1.2 var(--mono);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.edition-line span {
  padding: 8px 10px;
  background: var(--red);
  color: #11110f;
}

.poster-hero h1 {
  max-width: 980px;
  margin: 0;
  font-family: var(--display);
  font-size: clamp(68px, 10.6vw, 176px);
  font-stretch: condensed;
  font-weight: 950;
  letter-spacing: -0.085em;
  line-height: 0.75;
  text-transform: uppercase;
}

.poster-hero h1 span {
  position: relative;
  display: block;
  width: fit-content;
}

.poster-hero h1 span:nth-child(2) {
  margin-left: 0.7em;
  color: var(--red);
}

.poster-hero h1 .hero-iphone {
  z-index: 1;
  margin-top: 0.1em;
  padding: 0.03em 0.12em 0.08em 0.05em;
  transform: rotate(-1.5deg);
  background: var(--acid);
  color: #11110f;
}

.hero-deck {
  max-width: 760px;
  margin: 36px 0 0;
  font: 700 clamp(19px, 2vw, 28px)/1.12 var(--display);
  letter-spacing: -0.025em;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 32px;
}

.button {
  display: inline-flex;
  min-height: 52px;
  align-items: center;
  justify-content: center;
  gap: 20px;
  padding: 14px 20px;
  border: 2px solid var(--ink);
  font: 850 13px/1 var(--display);
  letter-spacing: 0.04em;
  text-decoration: none;
  text-transform: uppercase;
  transition: transform 160ms ease, box-shadow 160ms ease;
}

.button:hover {
  transform: translate(-3px, -3px);
  box-shadow: 4px 4px 0 var(--ink);
}

.button--ink {
  background: var(--ink);
  color: var(--paper);
}

.button--paper {
  background: var(--paper-bright);
}

.continue-card {
  position: relative;
  width: min(100%, 520px);
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 3px 20px;
  align-items: center;
  margin-top: 20px;
  padding: 13px 16px;
  border-left: 5px solid var(--blue);
  background: var(--paper-bright);
  text-decoration: none;
}

.continue-card span {
  font: 700 10px/1 var(--mono);
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.continue-card strong {
  max-width: 440px;
  overflow: hidden;
  font: 800 15px/1.25 var(--display);
  text-overflow: ellipsis;
  white-space: nowrap;
}

.continue-card b {
  grid-column: 2;
  grid-row: 1 / 3;
  font-size: 24px;
}

.hero-poster {
  position: relative;
  min-height: 580px;
  overflow: hidden;
  border-left: 3px solid var(--ink);
  background: var(--red);
}

.poster-ray {
  position: absolute;
  inset: -10%;
  background: repeating-conic-gradient(from 205deg at 54% 48%, transparent 0 8deg, rgba(17, 17, 15, 0.14) 8deg 13deg);
}

.phone-frame {
  position: absolute;
  z-index: 2;
  top: 50%;
  left: 50%;
  width: min(56%, 270px);
  aspect-ratio: 0.5;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  padding: 30px;
  transform: translate(-50%, -50%) rotate(9deg);
  border: 8px solid #11110f;
  border-radius: 38px;
  background: var(--paper);
  color: var(--ink);
  box-shadow: 22px 22px 0 rgba(17, 17, 15, 0.9);
  font: 950 clamp(30px, 4vw, 54px)/0.85 var(--display);
  letter-spacing: -0.07em;
  text-transform: uppercase;
}

.phone-frame::before {
  content: "";
  position: absolute;
  top: 14px;
  left: 50%;
  width: 38%;
  height: 8px;
  transform: translateX(-50%);
  border-radius: 8px;
  background: #11110f;
}

.phone-frame i {
  position: absolute;
  right: -20px;
  bottom: 25%;
  width: 46px;
  height: 46px;
  border: 8px solid #11110f;
  border-radius: 50%;
  background: var(--red);
}

.phone-frame span:nth-of-type(2) {
  font-size: 0.72em;
  letter-spacing: -0.085em;
}

.phone-frame i::before,
.phone-frame i::after {
  content: "";
  position: absolute;
  width: 32px;
  height: 32px;
  border: 8px solid #11110f;
  border-radius: 50%;
  background: var(--red);
}

.phone-frame i::before {
  top: -38px;
  left: 10px;
}

.phone-frame i::after {
  top: 34px;
  left: 12px;
}

.poster-stamp {
  position: absolute;
  z-index: 3;
  right: 5%;
  bottom: 5%;
  padding: 12px 15px 9px;
  transform: rotate(-8deg);
  border: 4px solid #11110f;
  color: #11110f;
  font: 950 18px/0.84 var(--display);
  letter-spacing: 0.04em;
  text-align: center;
}

.hero-side-note {
  position: absolute;
  z-index: 4;
  right: 14px;
  top: 28px;
  margin: 0;
  color: #11110f;
  font: 800 10px/1.35 var(--mono);
  text-transform: uppercase;
  writing-mode: vertical-rl;
}

.question-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-bottom: 3px solid var(--ink);
  background: var(--ink);
  color: var(--paper);
}

.question-strip div {
  min-height: 86px;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px clamp(16px, 2.2vw, 34px);
  border-right: 1px solid color-mix(in srgb, var(--paper) 30%, transparent);
  font: 900 clamp(15px, 1.5vw, 22px)/1 var(--display);
  text-transform: uppercase;
}

.question-strip div:last-child {
  border-right: 0;
}

.question-strip span {
  color: var(--red);
  font: 700 11px/1 var(--mono);
}

.page-section {
  padding: clamp(64px, 8vw, 128px) clamp(22px, 6vw, 100px);
  border-bottom: 3px solid var(--ink);
}

.section-label {
  font: 750 11px/1 var(--mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.section-label::before {
  content: "■";
  margin-right: 10px;
  color: var(--red);
}

.book-intro {
  display: grid;
  grid-template-columns: minmax(150px, 0.45fr) minmax(340px, 1.05fr) minmax(380px, 1fr);
  gap: clamp(30px, 5vw, 80px);
  align-items: start;
}

.intro-statement h2 {
  margin: 0;
  font: 950 clamp(44px, 6vw, 92px)/0.84 var(--display);
  letter-spacing: -0.065em;
  text-transform: uppercase;
}

.intro-statement h2 em {
  color: var(--red);
  font-style: normal;
}

.intro-statement > p {
  max-width: 700px;
  margin: 34px 0 0;
  font: 500 clamp(18px, 1.55vw, 23px)/1.48 var(--body);
}

.route-grid {
  display: grid;
  gap: 14px;
}

.route-grid article {
  position: relative;
  padding: 26px;
  border: 2px solid var(--ink);
  background: var(--paper-bright);
  box-shadow: 7px 7px 0 var(--ink);
}

.route-grid article:nth-child(2) {
  background: var(--acid);
  color: #11110f;
}

.route-grid span,
.status-card > span {
  font: 750 10px/1 var(--mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.route-grid h3 {
  margin: 13px 0 8px;
  font: 900 27px/0.95 var(--display);
  letter-spacing: -0.04em;
  text-transform: uppercase;
}

.route-grid p {
  margin: 0;
  font: 600 15px/1.4 var(--display);
}

.route-grid a,
.update-card a,
.version-note a,
.utility-cta a {
  display: inline-block;
  margin-top: 18px;
  font: 850 12px/1 var(--display);
  text-decoration-thickness: 2px;
  text-underline-offset: 4px;
  text-transform: uppercase;
}

.stats-band {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  border-bottom: 3px solid var(--ink);
  background: var(--red);
  color: #11110f;
}

.stats-band div {
  min-height: 155px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 22px clamp(16px, 2.5vw, 38px);
  border-right: 2px solid #11110f;
}

.stats-band div:last-child {
  border-right: 0;
}

.stats-band strong {
  font: 950 clamp(42px, 5vw, 78px)/0.82 var(--display);
  letter-spacing: -0.07em;
}

.stats-band span {
  margin-top: 12px;
  font: 800 11px/1 var(--mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.contents {
  background:
    linear-gradient(90deg, transparent 0 calc(100% - 20px), var(--red) calc(100% - 20px) calc(100% - 16px), transparent calc(100% - 16px)),
    var(--paper);
}

.contents-head {
  display: grid;
  grid-template-columns: 1fr minmax(300px, 520px);
  gap: 40px;
  align-items: end;
  margin-bottom: 50px;
}

.contents-head h2 {
  margin: 13px 0 0;
  font: 950 clamp(62px, 9vw, 138px)/0.72 var(--display);
  letter-spacing: -0.08em;
  text-transform: uppercase;
}

.book-search {
  position: relative;
  display: block;
}

.book-search span {
  display: block;
  margin-bottom: 10px;
  font: 750 10px/1 var(--mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.book-search input {
  width: 100%;
  height: 58px;
  padding: 0 54px 0 18px;
  border: 2px solid var(--ink);
  border-radius: 0;
  background: var(--paper-bright);
  color: var(--ink);
  font: 700 15px/1 var(--display);
}

.book-search input::placeholder {
  color: var(--muted);
}

.book-search kbd {
  position: absolute;
  right: 12px;
  bottom: 12px;
  min-width: 30px;
  padding: 7px;
  border: 1px solid var(--line);
  background: var(--paper);
  font: 700 11px/1 var(--mono);
  text-align: center;
}

.search-empty {
  margin: 20px 0 40px;
  padding: 20px;
  border: 2px dashed var(--red);
  font: 750 16px/1.4 var(--display);
}

.prologue-row {
  margin-bottom: 48px;
}

.prologue-row .chapter-card {
  background: var(--ink);
  color: var(--paper);
}

.part-block {
  display: grid;
  grid-template-columns: minmax(280px, 0.6fr) minmax(0, 1.4fr);
  gap: clamp(28px, 5vw, 80px);
  padding: 58px 0;
  border-top: 3px solid var(--ink);
}

.part-heading {
  position: sticky;
  top: calc(var(--header-height) + 24px);
  align-self: start;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 18px;
}

.part-heading__number {
  color: var(--red);
  font: 950 clamp(54px, 6vw, 96px)/0.75 var(--display);
  letter-spacing: -0.08em;
}

.part-heading p {
  margin: 0 0 10px;
  font: 750 10px/1 var(--mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.part-heading h3 {
  max-width: 430px;
  margin: 0;
  font: 900 clamp(28px, 3vw, 48px)/0.95 var(--display);
  letter-spacing: -0.045em;
  text-transform: uppercase;
}

.part-heading .part-note {
  max-width: 390px;
  margin-top: 20px;
  color: var(--muted);
  font: 600 14px/1.45 var(--display);
  letter-spacing: 0;
  text-transform: none;
}

.chapter-list {
  border-top: 2px solid var(--ink);
}

.chapter-card {
  position: relative;
  display: grid;
  grid-template-columns: 62px 1fr auto;
  gap: 18px;
  align-items: center;
  min-height: 92px;
  padding: 15px 18px 15px 0;
  border-bottom: 1px solid var(--line);
  text-decoration: none;
  transition: padding 160ms ease, background 160ms ease, color 160ms ease;
}

.chapter-card:hover {
  padding-left: 14px;
  background: var(--ink);
  color: var(--paper);
}

.chapter-card[data-read="true"] .chapter-card__number::after {
  content: "✓";
  position: absolute;
  right: -7px;
  bottom: -8px;
  display: grid;
  width: 20px;
  height: 20px;
  place-items: center;
  border-radius: 50%;
  background: var(--acid);
  color: #11110f;
  font: 900 11px/1 var(--display);
}

.chapter-card__number {
  position: relative;
  color: var(--red);
  font: 850 17px/1 var(--mono);
  text-align: center;
}

.chapter-card__body {
  display: flex;
  flex-direction: column;
  gap: 7px;
}

.chapter-card__body strong {
  font: 800 clamp(18px, 1.8vw, 27px)/1.05 var(--display);
  letter-spacing: -0.025em;
}

.chapter-card__body small {
  color: var(--muted);
  font: 650 10px/1 var(--mono);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.chapter-card:hover small {
  color: color-mix(in srgb, var(--paper) 68%, transparent);
}

.chapter-card__arrow {
  font: 400 28px/1 var(--display);
}

.chapter-card[hidden],
.appendix-card[hidden],
.part-block[data-search-hidden="true"] {
  display: none;
}

.appendix-card {
  position: relative;
  display: grid;
  grid-template-columns: 140px 1fr auto;
  gap: 24px;
  align-items: center;
  margin-top: 50px;
  padding: 28px;
  border: 3px solid var(--ink);
  background: var(--blue);
  color: #fff;
  text-decoration: none;
}

.appendix-card span,
.appendix-card small {
  font: 750 10px/1.4 var(--mono);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.appendix-card strong {
  font: 900 clamp(22px, 2.6vw, 42px)/0.95 var(--display);
  letter-spacing: -0.04em;
  text-transform: uppercase;
}

.appendix-card small {
  align-self: end;
}

.appendix-card b {
  grid-column: 3;
  grid-row: 1 / 3;
  font-size: 36px;
}

.live-section {
  background: var(--paper-deep);
}

.live-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: clamp(22px, 4vw, 64px);
  margin-top: 38px;
}

.update-card {
  padding: clamp(28px, 5vw, 72px);
  background: var(--red);
  color: #11110f;
}

.update-card > p:first-child {
  margin: 0;
  font: 800 11px/1 var(--mono);
  text-transform: uppercase;
}

.update-card h2 {
  max-width: 800px;
  margin: 24px 0;
  font: 950 clamp(38px, 5vw, 76px)/0.88 var(--display);
  letter-spacing: -0.06em;
  text-transform: uppercase;
}

.update-card h2 + p {
  max-width: 660px;
  font: 600 18px/1.45 var(--display);
}

.status-card {
  align-self: stretch;
  padding: clamp(28px, 4vw, 56px);
  border: 3px solid var(--ink);
  background: var(--paper-bright);
}

.status-card h3 {
  margin: 22px 0 30px;
  font: 900 clamp(30px, 3.8vw, 58px)/0.92 var(--display);
  letter-spacing: -0.05em;
  text-transform: uppercase;
}

.status-card p {
  font: 600 16px/1.5 var(--display);
}

.status-meter {
  height: 18px;
  overflow: hidden;
  border: 2px solid var(--ink);
  background: var(--paper-deep);
}

.status-meter i {
  display: block;
  height: 100%;
  background: repeating-linear-gradient(-45deg, var(--ink) 0 8px, var(--red) 8px 16px);
}

.book-footer {
  display: grid;
  grid-template-columns: 1fr 1fr auto;
  gap: 40px;
  align-items: end;
  padding: 44px clamp(22px, 6vw, 100px);
  background: var(--ink);
  color: var(--paper);
}

.book-footer div {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.book-footer span,
.book-footer p {
  font: 650 10px/1.5 var(--mono);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.book-footer strong {
  font: 900 24px/1 var(--display);
  text-transform: uppercase;
}

.book-footer p {
  max-width: 600px;
  margin: 0;
  color: color-mix(in srgb, var(--paper) 65%, transparent);
  text-transform: none;
}

.book-footer > a {
  font: 800 12px/1 var(--display);
  text-transform: uppercase;
}

/* Reader */
.reading-progress {
  position: fixed;
  z-index: 110;
  top: calc(var(--header-height) - 3px);
  left: 0;
  width: 100%;
  height: 3px;
  background: transparent;
  pointer-events: none;
}

.reading-progress i {
  display: block;
  width: 0;
  height: 100%;
  background: var(--acid);
  transition: width 80ms linear;
}

.reader-layout {
  display: grid;
  grid-template-columns: minmax(230px, 300px) minmax(0, 820px) minmax(190px, 260px);
  gap: clamp(28px, 4vw, 70px);
  max-width: 1600px;
  margin: 0 auto;
  padding: 44px clamp(18px, 3.5vw, 58px) 90px;
}

.reader-sidebar,
.chapter-rail {
  align-self: start;
  position: sticky;
  top: calc(var(--header-height) + 28px);
  max-height: calc(100svh - var(--header-height) - 56px);
  overflow: auto;
  overflow-x: hidden;
  scrollbar-width: thin;
}

.chapter-toc .toc-home {
  display: inline-block;
  margin-bottom: 34px;
  font: 800 11px/1 var(--display);
  letter-spacing: 0.05em;
  text-decoration: none;
  text-transform: uppercase;
}

.chapter-toc .toc-kicker {
  margin: 0 0 10px;
  color: var(--red);
  font: 750 10px/1 var(--mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.chapter-toc > strong {
  display: block;
  margin-bottom: 20px;
  font: 900 20px/0.98 var(--display);
  letter-spacing: -0.035em;
  text-transform: uppercase;
}

.toc-list {
  border-top: 2px solid var(--ink);
}

.toc-list a,
.chapter-toc > a:not(.toc-home) {
  display: grid;
  grid-template-columns: 27px 1fr;
  gap: 9px;
  padding: 11px 5px;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  font: 700 12px/1.24 var(--display);
  text-decoration: none;
}

.toc-list a span,
.chapter-toc > a:not(.toc-home) span {
  color: var(--red);
  font: 700 9px/1.4 var(--mono);
}

.toc-list a:hover,
.toc-list a[aria-current="page"] {
  background: var(--ink);
  color: var(--paper);
}

.toc-list a[aria-current="page"] {
  font-weight: 900;
}

.chapter-main {
  min-width: 0;
}

.chapter-masthead {
  position: relative;
  min-height: 430px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  overflow: hidden;
  margin-bottom: clamp(48px, 7vw, 92px);
  padding: clamp(30px, 5vw, 62px);
  border: 3px solid var(--ink);
  background:
    linear-gradient(135deg, transparent 0 67%, color-mix(in srgb, var(--ink) 9%, transparent) 67%),
    var(--red);
  color: #11110f;
  box-shadow: 10px 10px 0 var(--ink);
}

.chapter-part {
  position: relative;
  z-index: 2;
  margin: 0 0 auto;
  font: 800 10px/1.2 var(--mono);
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.chapter-number {
  position: absolute;
  z-index: 0;
  top: -0.13em;
  right: -0.04em;
  color: rgba(17, 17, 15, 0.12);
  font: 950 clamp(170px, 25vw, 360px)/0.8 var(--display);
  letter-spacing: -0.11em;
}

.chapter-masthead h1 {
  position: relative;
  z-index: 2;
  max-width: 700px;
  margin: 50px 0 30px;
  font: 950 clamp(43px, 6.2vw, 82px)/0.88 var(--display);
  letter-spacing: -0.06em;
  text-wrap: balance;
  text-transform: uppercase;
}

.chapter-meta {
  position: relative;
  z-index: 2;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
  padding-top: 17px;
  border-top: 2px solid rgba(17, 17, 15, 0.6);
  font: 750 9px/1 var(--mono);
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.prose {
  font-family: var(--body);
  font-size: calc(19px * var(--reader-scale));
  line-height: 1.73;
}

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

.prose p {
  margin: 0 0 1.45em;
  hanging-punctuation: first last;
}

.prose > p:first-child {
  font-size: calc(23px * var(--reader-scale));
  line-height: 1.52;
}

.prose > p:first-child::first-letter {
  float: left;
  margin: 0.08em 0.1em 0 0;
  color: var(--red);
  font: 950 4.9em/0.72 var(--display);
}

.prose h2,
.prose h3,
.prose h4 {
  font-family: var(--display);
  text-wrap: balance;
}

.prose h2 {
  margin: 2.4em 0 0.7em;
  font-size: calc(42px * var(--reader-scale));
  font-weight: 950;
  letter-spacing: -0.045em;
  line-height: 0.95;
  text-transform: uppercase;
}

.prose h3 {
  position: relative;
  margin: 2.6em 0 0.75em;
  padding-top: 18px;
  border-top: 3px solid var(--ink);
  font-size: calc(30px * var(--reader-scale));
  font-weight: 900;
  letter-spacing: -0.035em;
  line-height: 1.02;
}

.prose h3::before {
  content: "";
  position: absolute;
  top: -3px;
  left: 0;
  width: 80px;
  height: 7px;
  background: var(--red);
}

.prose h4 {
  margin: 2em 0 0.7em;
  font-size: calc(22px * var(--reader-scale));
  line-height: 1.15;
}

.prose strong {
  font-weight: 760;
}

.prose a {
  color: var(--blue);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  overflow-wrap: anywhere;
}

.prose a:hover {
  background: var(--acid);
  color: #11110f;
}

.prose blockquote {
  position: relative;
  margin: 2.2em 0;
  padding: 24px 30px 24px 44px;
  border: 0;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--display);
  font-size: calc(18px * var(--reader-scale));
  font-weight: 650;
  line-height: 1.48;
}

.prose blockquote::before {
  content: "“";
  position: absolute;
  top: 12px;
  left: 13px;
  color: var(--red);
  font: 950 48px/1 var(--display);
}

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

.prose ul,
.prose ol {
  margin: 1.3em 0 1.8em;
  padding-left: 1.5em;
}

.prose li {
  margin: 0.55em 0;
  padding-left: 0.25em;
}

.prose li::marker {
  color: var(--red);
  font-family: var(--mono);
  font-weight: 800;
}

.prose hr {
  height: 10px;
  margin: 3.5em 0;
  border: 0;
  background: repeating-linear-gradient(-45deg, var(--ink) 0 7px, transparent 7px 14px);
}

.prose table {
  width: 100%;
  margin: 2em 0;
  border-collapse: collapse;
  font-family: var(--display);
  font-size: calc(14px * var(--reader-scale));
  line-height: 1.4;
}

.prose th,
.prose td {
  padding: 12px;
  border: 1px solid var(--line);
  vertical-align: top;
  text-align: left;
}

.prose th {
  background: var(--ink);
  color: var(--paper);
  font-weight: 800;
  text-transform: uppercase;
}

.prose code {
  padding: 0.1em 0.3em;
  background: var(--paper-deep);
  font: 0.82em/1.3 var(--mono);
}

.prose sup {
  margin-left: 0.08em;
  font-family: var(--mono);
  font-size: 0.64em;
  font-weight: 800;
}

.prose .footnotes-sep {
  margin-top: 5em;
}

.prose .footnotes {
  font-family: var(--display);
  font-size: calc(13px * var(--reader-scale));
  line-height: 1.55;
}

.prose .footnotes::before {
  content: "Источники и примечания";
  display: block;
  margin-bottom: 22px;
  font: 900 28px/1 var(--display);
  letter-spacing: -0.03em;
  text-transform: uppercase;
}

.prose .footnote-item {
  margin: 0 0 1.2em;
  padding: 0 0 1.2em 0.2em;
  border-bottom: 1px solid var(--line);
}

.prose .footnote-item p {
  margin: 0;
}

.on-page-nav {
  padding-left: 18px;
  border-left: 3px solid var(--red);
}

.on-page-nav p {
  margin: 0 0 14px;
  font: 800 10px/1 var(--mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.on-page-nav a {
  display: block;
  margin: 0 -8px;
  padding: 7px 8px;
  color: var(--muted);
  font: 700 12px/1.25 var(--display);
  text-decoration: none;
}

.on-page-nav a:hover,
.on-page-nav a[data-active="true"] {
  background: var(--ink);
  color: var(--paper);
}

.version-note {
  margin-top: 34px;
  padding: 18px;
  border: 2px solid var(--ink);
  background: var(--paper-bright);
}

.version-note > span {
  display: inline-block;
  padding: 6px 8px;
  background: var(--red);
  color: #11110f;
  font: 800 9px/1 var(--mono);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.version-note p {
  font: 650 12px/1.45 var(--display);
}

.version-note a {
  font-size: 10px;
}

.chapter-pagination {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 90px;
  padding-top: 28px;
  border-top: 3px solid var(--ink);
}

.page-turn {
  min-height: 145px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 20px;
  border: 2px solid var(--ink);
  background: var(--paper-bright);
  text-decoration: none;
}

.page-turn--next {
  align-items: flex-end;
  background: var(--ink);
  color: var(--paper);
  text-align: right;
}

.page-turn:hover {
  background: var(--acid);
  color: #11110f;
}

.page-turn > span {
  font: 800 10px/1 var(--mono);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.page-turn strong {
  margin-top: auto;
  font: 900 24px/1 var(--display);
  text-transform: uppercase;
}

.page-turn small {
  margin-top: 7px;
  font: 650 12px/1.3 var(--display);
}

.page-turn--empty {
  border-color: transparent;
  background: transparent;
}

.reader-footer {
  display: flex;
  justify-content: space-between;
  gap: 30px;
  padding: 28px clamp(20px, 4vw, 58px);
  border-top: 3px solid var(--ink);
  background: var(--ink);
  color: var(--paper);
  font: 700 10px/1.4 var(--mono);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.reader-footer a {
  text-decoration: none;
}

.reader-footer a span {
  margin-right: 10px;
  color: var(--red);
  font-weight: 900;
}

.reader-footer p {
  margin: 0;
}

.mobile-toc {
  display: none;
}

/* Utility pages */
.utility-main {
  min-height: calc(100svh - var(--header-height));
}

.utility-hero {
  display: grid;
  grid-template-columns: minmax(140px, 0.35fr) minmax(320px, 1fr) minmax(260px, 0.7fr);
  gap: clamp(24px, 5vw, 80px);
  align-items: end;
  padding: clamp(60px, 9vw, 130px) clamp(22px, 7vw, 120px);
  border-bottom: 3px solid var(--ink);
  background: var(--red);
  color: #11110f;
}

.utility-hero > p {
  margin: 0;
  font: 800 11px/1 var(--mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.utility-hero h1 {
  max-width: 900px;
  margin: 0;
  font: 950 clamp(54px, 9vw, 136px)/0.78 var(--display);
  letter-spacing: -0.08em;
  text-transform: uppercase;
}

.utility-hero > div {
  font: 700 clamp(17px, 2vw, 24px)/1.3 var(--display);
}

.utility-content {
  max-width: 820px;
  margin: 0 auto;
  padding: clamp(60px, 9vw, 130px) 24px;
}

.glossary-prose > p {
  padding-bottom: 1.3em;
  border-bottom: 1px solid var(--line);
}

.utility-cta {
  max-width: 820px;
  margin: 0 auto clamp(60px, 9vw, 130px);
  padding: 30px;
  border: 3px solid var(--ink);
  background: var(--acid);
  color: #11110f;
  font: 700 16px/1.45 var(--display);
}

.editorial-status {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 26px 60px;
  align-items: end;
  margin: clamp(60px, 8vw, 110px) clamp(22px, 7vw, 120px);
  padding: clamp(28px, 5vw, 68px);
  border: 3px solid var(--ink);
  background: var(--paper-bright);
  box-shadow: 10px 10px 0 var(--ink);
}

.editorial-status span {
  font: 800 10px/1 var(--mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.editorial-status h2 {
  max-width: 720px;
  margin: 18px 0;
  font: 950 clamp(34px, 5vw, 72px)/0.9 var(--display);
  letter-spacing: -0.06em;
  text-transform: uppercase;
}

.editorial-status p {
  max-width: 700px;
  font: 650 16px/1.5 var(--display);
}

.editorial-status small {
  grid-column: 2;
  font: 700 10px/1 var(--mono);
  text-transform: uppercase;
}

.status-meter--large {
  height: 32px;
}

.change-log {
  margin: 0 clamp(22px, 7vw, 120px) clamp(70px, 10vw, 150px);
  border-top: 3px solid var(--ink);
}

.change-entry {
  display: grid;
  grid-template-columns: minmax(130px, 0.3fr) minmax(280px, 0.8fr) minmax(320px, 1fr);
  gap: 30px 60px;
  align-items: start;
  padding: 50px 0;
  border-bottom: 1px solid var(--line);
}

.change-entry > div {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.change-entry span {
  color: var(--red);
  font: 950 56px/0.8 var(--display);
}

.change-entry time {
  font: 750 10px/1 var(--mono);
  text-transform: uppercase;
}

.change-entry h2 {
  margin: 0;
  font: 900 clamp(28px, 3.5vw, 52px)/0.95 var(--display);
  letter-spacing: -0.045em;
  text-transform: uppercase;
}

.change-entry > p {
  margin: 0;
  font: 500 18px/1.55 var(--body);
}

@media (max-width: 1180px) {
  .book-intro {
    grid-template-columns: 150px 1fr;
  }

  .route-grid {
    grid-column: 2;
    grid-template-columns: 1fr 1fr;
  }

  .reader-layout {
    grid-template-columns: 230px minmax(0, 780px);
  }

  .chapter-rail {
    display: none;
  }
}

@media (max-width: 900px) {
  :root {
    --header-height: 58px;
  }

  .site-header {
    grid-template-columns: auto 1fr;
  }

  .brand {
    min-width: 116px;
  }

  .global-nav {
    display: none;
  }

  .reader-tools {
    justify-self: end;
  }

  .poster-hero {
    grid-template-columns: 1fr;
  }

  .hero-copy {
    min-height: 72svh;
  }

  .hero-poster {
    min-height: 440px;
    border-top: 3px solid var(--ink);
    border-left: 0;
  }

  .hero-side-note {
    top: auto;
    right: 12px;
    bottom: 30px;
  }

  .question-strip {
    grid-template-columns: 1fr 1fr;
  }

  .question-strip div:nth-child(2) {
    border-right: 0;
  }

  .question-strip div:nth-child(-n + 2) {
    border-bottom: 1px solid color-mix(in srgb, var(--paper) 30%, transparent);
  }

  .book-intro {
    grid-template-columns: 1fr;
  }

  .route-grid {
    grid-column: auto;
  }

  .stats-band {
    grid-template-columns: repeat(2, 1fr);
  }

  .stats-band div {
    min-height: 130px;
    border-bottom: 2px solid #11110f;
  }

  .stats-band div:nth-child(2n) {
    border-right: 0;
  }

  .stats-band div:last-child {
    grid-column: 1 / -1;
    border-bottom: 0;
  }

  .contents-head,
  .part-block,
  .live-grid {
    grid-template-columns: 1fr;
  }

  .part-heading {
    position: static;
  }

  .reader-sidebar {
    display: none;
  }

  .mobile-toc {
    display: block;
    margin: 18px;
    border: 2px solid var(--ink);
    background: var(--paper-bright);
  }

  .mobile-toc summary {
    padding: 14px 16px;
    cursor: pointer;
    font: 850 11px/1 var(--display);
    letter-spacing: 0.05em;
    text-transform: uppercase;
  }

  .mobile-toc .chapter-toc {
    padding: 5px 16px 18px;
  }

  .reader-layout {
    display: block;
    padding-top: 20px;
  }

  .utility-hero {
    grid-template-columns: 1fr;
  }

  .editorial-status,
  .change-entry {
    grid-template-columns: 1fr;
  }

  .editorial-status small {
    grid-column: auto;
  }
}

@media (max-width: 620px) {
  .brand {
    min-width: 100px;
    font-size: 19px;
  }

  .brand span {
    padding: 0 10px;
  }

  .reader-tools button {
    min-width: 42px;
  }

  .reader-tools .theme-toggle {
    padding: 0 10px;
  }

  .tool-label {
    display: none;
  }

  .hero-copy {
    min-height: 78svh;
    padding-top: 42px;
  }

  .poster-hero h1 {
    font-size: clamp(56px, 20vw, 92px);
    line-height: 0.78;
  }

  .poster-hero h1 span:nth-child(2) {
    margin-left: 0.18em;
  }

  .edition-line {
    align-items: flex-start;
    flex-direction: column;
  }

  .hero-actions .button {
    width: 100%;
  }

  .hero-poster {
    min-height: 390px;
  }

  .phone-frame {
    width: 190px;
    border-width: 6px;
    border-radius: 30px;
    box-shadow: 14px 14px 0 rgba(17, 17, 15, 0.9);
  }

  .question-strip div {
    min-height: 72px;
    align-items: flex-start;
    flex-direction: column;
    gap: 7px;
  }

  .route-grid {
    grid-template-columns: 1fr;
  }

  .stats-band strong {
    font-size: 45px;
  }

  .contents {
    background: var(--paper);
  }

  .contents-head h2 {
    font-size: 62px;
  }

  .chapter-card {
    grid-template-columns: 42px 1fr auto;
    gap: 10px;
  }

  .chapter-card__body strong {
    font-size: 18px;
  }

  .appendix-card {
    grid-template-columns: 1fr auto;
  }

  .appendix-card span,
  .appendix-card strong,
  .appendix-card small {
    grid-column: 1;
  }

  .appendix-card b {
    grid-column: 2;
    grid-row: 1 / 4;
  }

  .book-footer {
    grid-template-columns: 1fr;
  }

  .chapter-masthead {
    min-height: 380px;
    padding: 24px;
    box-shadow: 6px 6px 0 var(--ink);
  }

  .chapter-masthead h1 {
    font-size: clamp(38px, 12vw, 58px);
  }

  .chapter-number {
    font-size: 190px;
  }

  .prose {
    font-size: calc(18px * var(--reader-scale));
  }

  .prose > p:first-child {
    font-size: calc(21px * var(--reader-scale));
  }

  .prose h3 {
    font-size: calc(27px * var(--reader-scale));
  }

  .prose table {
    display: block;
    overflow-x: auto;
  }

  .chapter-pagination {
    grid-template-columns: 1fr;
  }

  .page-turn--empty {
    display: none;
  }

  .reader-footer {
    align-items: flex-start;
    flex-direction: column;
  }

  .editorial-status,
  .change-log {
    margin-right: 20px;
    margin-left: 20px;
  }
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}