:root {
  color-scheme: light;
  --paper: #eeeae1;
  --sheet: #f8f5ee;
  --graphite: #292b28;
  --muted: #585a55;
  --line: #b9b5ab;
  --warm: #b65d3d;
  --cool: #477f7e;
  --focus: #244f55;
  --shadow: 0 1.4rem 3.5rem rgb(41 43 40 / 8%);
  font-family: Georgia, "Times New Roman", serif;
  font-synthesis: none;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--paper);
}

body {
  margin: 0;
  min-width: 18rem;
  color: var(--graphite);
  background:
    linear-gradient(90deg, transparent 0 49.94%, rgb(41 43 40 / 4%) 49.94% 50.06%, transparent 50.06%),
    var(--paper);
}

button,
a {
  font: inherit;
}

.work-nav {
  display: flex;
  width: min(84rem, calc(100% - 2rem));
  margin: 0 auto;
  padding-top: 1.2rem;
  justify-content: space-between;
  gap: 1rem;
  font: 0.76rem/1.4 Arial, Helvetica, sans-serif;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.work-nav a {
  color: var(--muted);
  text-underline-offset: 0.25em;
}

.work-nav a:hover {
  color: var(--graphite);
}

.work-nav-bottom {
  padding: 0 0 2rem;
}

.skip-link {
  position: fixed;
  z-index: 10;
  inset: 0 auto auto 0;
  padding: 0.75rem 1rem;
  color: var(--sheet);
  background: var(--graphite);
  transform: translateY(-120%);
}

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

.work {
  width: min(92rem, 100%);
  margin-inline: auto;
  padding: clamp(2rem, 5vw, 5rem) clamp(1rem, 4vw, 4rem) 2rem;
}

.work-header {
  width: min(43rem, 100%);
  margin: 0 auto clamp(2.5rem, 7vw, 5.5rem);
  text-align: center;
}

.work-number,
.work-context,
.page-mark,
.version-status,
.version-meta,
.work-footer,
.choose,
.restore,
.noscript {
  font-family: Arial, Helvetica, sans-serif;
}

.work-number,
.page-mark,
.version-status {
  margin: 0;
  font-size: 0.69rem;
  line-height: 1.3;
  letter-spacing: 0.18em;
}

h1 {
  margin: 0.8rem 0 0.55rem;
  font-size: clamp(2.1rem, 6vw, 4.8rem);
  font-weight: 400;
  line-height: 0.98;
  letter-spacing: -0.035em;
}

.work-context {
  margin: 0;
  color: var(--muted);
  font-size: 0.78rem;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.state-description {
  max-width: 35rem;
  margin: 1.75rem auto 0;
  font-size: clamp(1rem, 1.6vw, 1.15rem);
  line-height: 1.55;
}

.work-nav a:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 4px;
}

.versions {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(1rem, 4vw, 4rem);
  align-items: start;
}

.version {
  position: relative;
  display: flex;
  min-height: 42rem;
  padding: clamp(1.5rem, 4vw, 3.75rem);
  flex-direction: column;
  background: var(--sheet);
  box-shadow: var(--shadow);
  outline: none;
  transition: opacity 180ms ease, transform 180ms ease;
}

.version::before,
.version::after {
  position: absolute;
  content: "";
  pointer-events: none;
}

.version::before {
  top: 0;
  width: 34%;
  height: 0.28rem;
}

.version-save {
  margin-top: 0;
  border-left: 1px solid rgb(182 93 61 / 34%);
}

.version-save::before {
  right: 8%;
  background: var(--warm);
}

.version-save::after {
  inset: 10rem 1.15rem 4rem auto;
  width: 1px;
  background: linear-gradient(var(--warm), transparent);
  opacity: 0.32;
}

.version-change {
  margin-top: clamp(2rem, 6vw, 5.5rem);
  border-right: 1px solid rgb(71 127 126 / 38%);
}

.version-change::before {
  left: 8%;
  background: var(--cool);
}

.version-change::after {
  inset: 10rem auto 4rem 1.15rem;
  width: 1px;
  background: linear-gradient(var(--cool), transparent);
  opacity: 0.36;
}

.version:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 5px;
}

.version-header {
  position: relative;
  padding-bottom: 1.8rem;
  border-bottom: 1px solid var(--line);
}

.page-mark {
  color: var(--muted);
}

.version-status {
  margin-top: 2rem;
  font-weight: 700;
}

.version h2 {
  margin: 0.65rem 0 0.8rem;
  font-size: clamp(1.75rem, 3vw, 2.7rem);
  font-weight: 400;
  line-height: 1.05;
}

.version-meta {
  margin: 0;
  color: var(--muted);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
}

.text-body {
  flex: 1;
  padding-top: clamp(1.4rem, 3vw, 2.5rem);
  font-size: clamp(1.05rem, 1.45vw, 1.22rem);
  line-height: 1.68;
}

.text-body p {
  margin: 0 0 1.25em;
}

.version-save .text-body {
  padding-right: clamp(0rem, 3vw, 2.5rem);
}

.version-change .text-body {
  padding-left: clamp(0rem, 3vw, 2.5rem);
}

.branch-text {
  margin-block: 2rem;
}

.choose,
.restore {
  min-height: 2.9rem;
  border: 1px solid var(--graphite);
  color: var(--graphite);
  background: transparent;
  cursor: pointer;
}

.choose {
  width: 100%;
  margin-top: 1.25rem;
  padding: 0.75rem 1.1rem;
}

.choose:hover,
.restore:hover {
  color: var(--sheet);
  background: var(--graphite);
}

.choose:focus-visible,
.restore:focus-visible,
.skip-link:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 4px;
}

.resolution {
  margin: 2.5rem auto 0;
  text-align: center;
}

.restore {
  padding: 0.75rem 1.4rem;
}

.work-footer {
  width: min(48rem, 100%);
  margin: 5rem auto 0;
  color: var(--muted);
  font-size: 0.72rem;
  line-height: 1.55;
  letter-spacing: 0.035em;
  text-align: center;
}

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

.noscript {
  position: fixed;
  inset: auto 1rem 1rem;
  z-index: 5;
  max-width: 40rem;
  margin: auto;
  padding: 0.8rem 1rem;
  color: var(--sheet);
  background: var(--graphite);
  font-size: 0.8rem;
  text-align: center;
}

/* Выбор не убирает вторую страницу: она становится боковым полем и меняет ширину текущей. */
body[data-state="save"] .versions {
  grid-template-columns: minmax(0, 1fr) minmax(13rem, 0.42fr);
  gap: clamp(1.25rem, 4vw, 4.5rem);
}

body[data-state="change"] .versions {
  grid-template-columns: minmax(13rem, 0.42fr) minmax(0, 1fr);
  gap: clamp(1.25rem, 4vw, 4.5rem);
}

body[data-state="save"] .version-save {
  grid-column: 1;
  margin-top: 0;
}

body[data-state="save"] .version-change {
  grid-column: 2;
}

body[data-state="change"] .version-save {
  grid-column: 1;
}

body[data-state="change"] .version-change {
  grid-column: 2;
  margin-top: 0;
}

body[data-state="save"] .version-save,
body[data-state="change"] .version-change {
  min-height: 40rem;
}

body[data-state="save"] .version-change,
body[data-state="change"] .version-save {
  min-height: 0;
  margin-top: clamp(5rem, 12vw, 10rem);
  padding: clamp(1rem, 2.3vw, 1.8rem);
  background: transparent;
  box-shadow: none;
  color: #4f514d;
}

body[data-state="save"] .version-change .version-header,
body[data-state="change"] .version-save .version-header {
  padding-bottom: 1rem;
}

body[data-state="save"] .version-change .text-body,
body[data-state="change"] .version-save .text-body {
  padding: 1rem 0 0;
  font-size: 0.88rem;
  line-height: 1.62;
}

body[data-state="save"] .version-change .branch-text,
body[data-state="change"] .version-save .branch-text {
  margin-block: 2.2rem;
}

body[data-state="save"] .version-change .text-body > p,
body[data-state="change"] .version-save .text-body > p {
  color: var(--muted);
  font-size: 0.82rem;
}

body[data-state="save"] .choose,
body[data-state="change"] .choose {
  display: none;
}

@media (max-width: 47.99rem) {
  body {
    background: var(--paper);
  }

  .work {
    padding-inline: 0.85rem;
  }

  .work-nav {
    align-items: flex-start;
    flex-direction: column;
  }

  .work-header {
    margin-bottom: 2.75rem;
    padding-inline: 0.5rem;
  }

  .versions,
  body[data-state="save"] .versions,
  body[data-state="change"] .versions {
    grid-template-columns: minmax(0, 1fr);
    gap: 1.25rem;
  }

  .version,
  body[data-state="save"] .version-save,
  body[data-state="save"] .version-change,
  body[data-state="change"] .version-save,
  body[data-state="change"] .version-change {
    grid-column: 1;
    min-height: 0;
  }

  .version {
    padding: 1.5rem;
  }

  .version-save,
  .version-change {
    margin-top: 0;
  }

  .version-save .text-body,
  .version-change .text-body {
    padding-inline: 0;
  }

  body[data-state="save"] .version-save,
  body[data-state="change"] .version-change {
    grid-row: 1;
  }

  body[data-state="save"] .version-change,
  body[data-state="change"] .version-save {
    grid-row: 2;
    margin-top: 0.5rem;
    padding: 1.35rem;
    border-top: 1px solid var(--line);
  }

  .work-footer {
    margin-top: 3.5rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}

@media (forced-colors: active) {
  .version,
  .choose,
  .restore {
    border: 1px solid CanvasText;
  }

  .version::before,
  .version::after {
    background: CanvasText;
  }
}