:root {
  --manual-bg: #eef3f4;
  --manual-paper: #ffffff;
  --manual-surface: #ffffff;
  --manual-surface-strong: #f8fbfb;
  --manual-text: #172126;
  --manual-muted: #5d6970;
  --manual-border: #c9d6d8;
  --manual-border-strong: #94aaae;
  --manual-blue: #0b5f8a;
  --manual-blue-dark: #074463;
  --manual-teal: #0b7f78;
  --manual-teal-soft: #dcefed;
  --manual-focus: #0b7f78;
  --manual-danger: #a43e2c;
  --manual-shadow: 0 14px 34px rgb(23 33 38 / 16%);
  --manual-control-height: 2.5rem;
  --manual-mobile-nav-reserve: calc(5.75rem + env(safe-area-inset-bottom));
  color-scheme: light;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  letter-spacing: 0;
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  background: var(--manual-bg);
  color: var(--manual-text);
}

body {
  min-height: 100%;
  margin: 0;
  background: var(--manual-bg);
}

button,
input,
a {
  font: inherit;
  letter-spacing: 0;
}

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

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

.manual-reader-shell {
  min-height: 100dvh;
}

.manual-reader {
  min-height: 100dvh;
  display: grid;
  grid-template-rows: auto auto 1fr;
  gap: 0.75rem;
  padding: 0.75rem 1rem 1.25rem;
  background: var(--manual-bg);
  color: var(--manual-text);
}

.manual-reader-header,
.manual-reader__header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto auto;
  align-items: center;
  gap: 0.375rem 0.75rem;
  min-height: 4.75rem;
  padding: 0.75rem 1rem;
  border: 1px solid var(--manual-border);
  background: rgb(255 255 255 / 96%);
  box-shadow: 0 6px 18px rgb(23 33 38 / 8%);
}

.manual-reader__area,
.manual-reader__page-count,
.manual-reader__title {
  min-width: 0;
  margin: 0;
}

.manual-reader__area {
  grid-column: 1;
  grid-row: 1;
}

.manual-reader__area {
  color: var(--manual-teal);
  font-size: 0.75rem;
  font-weight: 700;
  line-height: 1.25;
}

.manual-reader__title {
  grid-column: 1;
  grid-row: 2;
  overflow: hidden;
  color: var(--manual-text);
  font-size: 1.125rem;
  font-weight: 760;
  line-height: 1.2;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.manual-reader__page-count {
  grid-column: 1;
  grid-row: 3;
}

.manual-reader__language-options {
  grid-column: 2;
  grid-row: 1 / span 3;
  align-self: center;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0.45rem;
}

.manual-reader__language-label {
  color: var(--manual-muted);
  font-size: 0.75rem;
  font-weight: 700;
}

.manual-reader__language-select {
  min-height: 2.5rem;
  min-width: 7.75rem;
  border: 1px solid var(--manual-border-strong);
  border-radius: 0;
  background: var(--manual-surface);
  color: var(--manual-blue-dark);
  font: inherit;
  font-size: 0.8125rem;
  font-weight: 750;
  padding: 0.45rem 1.8rem 0.45rem 0.65rem;
}

.manual-reader__page-count {
  color: var(--manual-muted);
  font-size: 0.8125rem;
  font-weight: 650;
  line-height: 1.25;
}

.manual-reader__search-button {
  grid-column: 3;
  grid-row: 1 / span 3;
}

.manual-primary-controls,
.manual-reader__primary-controls {
  position: sticky;
  top: 5.65rem;
  z-index: 18;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.625rem;
  border: 1px solid var(--manual-border);
  background: rgb(248 251 251 / 96%);
  box-shadow: 0 6px 18px rgb(23 33 38 / 6%);
}

.manual-reader__button,
.manual-reader__button--link,
.manual-reader__search-button,
.manual-reader__drawer-close,
.manual-reader__mobile-button,
.manual-reader__nearby-page,
.manual-reader__link-button {
  min-height: var(--manual-control-height);
  max-width: 100%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.375rem;
  padding: 0.625rem 0.875rem;
  border: 1px solid var(--manual-border-strong);
  background: var(--manual-surface);
  color: var(--manual-blue-dark);
  cursor: pointer;
  font-size: 0.875rem;
  font-weight: 700;
  line-height: 1.15;
  text-align: center;
  text-decoration: none;
  white-space: normal;
  overflow-wrap: anywhere;
}

.manual-reader__button:hover,
.manual-reader__button--link:hover,
.manual-reader__search-button:hover,
.manual-reader__drawer-close:hover,
.manual-reader__mobile-button:hover,
.manual-reader__nearby-page:hover,
.manual-reader__link-button:hover {
  border-color: var(--manual-blue);
  background: var(--manual-teal-soft);
  color: var(--manual-blue-dark);
}

.manual-reader__button:disabled,
.manual-reader__mobile-button:disabled,
.manual-reader__nearby-page:disabled {
  cursor: not-allowed;
  opacity: 0.52;
}

.manual-reader__button.is-active,
.manual-reader__nearby-page.is-current {
  border-color: var(--manual-teal);
  background: var(--manual-teal-soft);
  color: #073d3b;
}

.manual-reader__page-form {
  min-height: var(--manual-control-height);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.25rem 0.35rem 0.25rem 0.7rem;
  border: 1px solid var(--manual-border);
  background: var(--manual-surface);
}

.manual-reader__page-label {
  color: var(--manual-muted);
  font-size: 0.8125rem;
  font-weight: 700;
  line-height: 1;
  white-space: nowrap;
}

.manual-reader__page-input {
  width: 4.25rem;
  min-height: 2rem;
  border: 1px solid var(--manual-border);
  background: var(--manual-paper);
  color: var(--manual-text);
  font-size: 1rem;
  font-weight: 760;
  line-height: 1;
  text-align: center;
}

.manual-page-stage,
.manual-reader__stage {
  min-width: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  align-content: start;
  justify-items: center;
  gap: 0.75rem;
  padding: 0.75rem 0 1rem;
}

.manual-reader__page-figure {
  width: min(100%, 58rem);
  margin: 0;
  display: grid;
  justify-items: center;
  gap: 0.45rem;
}

.manual-reader__stage--fit-page .manual-reader__page-figure {
  width: min(100%, 46rem);
}

.manual-reader__page-image {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: contain;
  border: 1px solid var(--manual-border-strong);
  background: var(--manual-paper);
  box-shadow: var(--manual-shadow);
}

.manual-reader__stage--fit-page .manual-reader__page-image {
  width: auto;
  max-width: 100%;
  max-height: calc(100dvh - 12.5rem);
}

.manual-reader__page-caption {
  color: var(--manual-muted);
  font-size: 0.8125rem;
  font-weight: 650;
  line-height: 1.3;
}

.manual-reader__nearby-pages {
  max-width: min(100%, 58rem);
  display: grid;
  grid-template-columns: repeat(3, minmax(5.25rem, 7rem));
  justify-content: center;
  gap: 0.5rem;
}

.manual-reader__nearby-page {
  min-height: 5.75rem;
  flex-direction: column;
  padding: 0.35rem;
  font-size: 0.75rem;
}

.manual-reader__nearby-image {
  width: 100%;
  max-width: 4.75rem;
  height: 3.75rem;
  object-fit: contain;
  border: 1px solid var(--manual-border);
  background: var(--manual-paper);
}

.manual-drawer,
.manual-reader__drawer {
  position: fixed;
  top: 0.75rem;
  right: 0.75rem;
  bottom: 0.75rem;
  z-index: 40;
  width: min(100%, 25rem);
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-content: start;
  gap: 0.875rem;
  overflow: auto;
  padding: 1rem;
  border: 1px solid var(--manual-border-strong);
  background: var(--manual-surface);
  box-shadow: var(--manual-shadow);
}

.manual-drawer[hidden],
.manual-reader__drawer[hidden],
.manual-drawer[inert],
.manual-reader__drawer[inert] {
  display: none;
}

.manual-reader__drawer-heading {
  min-width: 0;
  margin: 0;
  color: var(--manual-text);
  font-size: 1.125rem;
  font-weight: 780;
  line-height: 1.2;
}

.manual-reader__drawer-close {
  min-width: 4.75rem;
  min-height: 2.25rem;
  padding: 0.45rem 0.65rem;
  font-size: 0.8125rem;
}

.manual-reader__drawer-subheading {
  grid-column: 1 / -1;
  margin: 0.25rem 0 0;
  color: var(--manual-blue-dark);
  font-size: 0.875rem;
  font-weight: 760;
  line-height: 1.25;
}

.manual-reader__key-jumps,
.manual-reader__chapter-groups {
  grid-column: 1 / -1;
  display: grid;
  gap: 0.5rem;
  margin: 0;
  padding: 0;
}

.manual-reader__key-jumps {
  list-style: none;
}

.manual-reader__key-jump {
  min-width: 0;
}

.manual-reader__link-button {
  width: 100%;
  justify-content: flex-start;
  border-color: var(--manual-border);
  background: var(--manual-surface-strong);
  color: var(--manual-blue-dark);
  text-align: left;
}

.manual-topic-guide,
.manual-reader__chapter-group {
  min-width: 0;
  display: grid;
  gap: 0.45rem;
  padding: 0.75rem;
  border: 1px solid var(--manual-border);
  background: var(--manual-surface-strong);
}

.manual-reader__chapter-detail,
.manual-reader__copy-status,
.manual-reader__search-note {
  margin: 0;
  color: var(--manual-muted);
  font-size: 0.8125rem;
  font-weight: 600;
  line-height: 1.35;
}

.manual-reader__chapter-actions,
.manual-tools-grid,
.manual-reader__tool-actions,
.manual-reader__fit-controls {
  min-width: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.5rem;
}

.manual-reader__tool-actions,
.manual-reader__fit-controls {
  grid-column: 1 / -1;
}

.manual-reader__fit-controls {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.25rem;
  padding: 0.25rem;
  border: 1px solid var(--manual-border);
  background: var(--manual-surface-strong);
}

.manual-reader__fit-controls .manual-reader__button {
  border-color: transparent;
  background: transparent;
}

.manual-reader__fit-controls .manual-reader__button.is-active {
  border-color: var(--manual-teal);
  background: var(--manual-surface);
}

.manual-reader__copy-status {
  grid-column: 1 / -1;
  padding: 0.625rem 0.75rem;
  border: 1px solid var(--manual-border);
  background: var(--manual-surface-strong);
}

.manual-reader__search-label,
.manual-reader__search-input,
.manual-search-results,
.manual-reader__search-note {
  grid-column: 1 / -1;
}

.manual-reader__search-label {
  color: var(--manual-muted);
  font-size: 0.8125rem;
  font-weight: 760;
  line-height: 1.2;
}

.manual-reader__search-input {
  width: 100%;
  min-height: var(--manual-control-height);
  padding: 0.625rem 0.75rem;
  border: 1px solid var(--manual-border-strong);
  background: var(--manual-paper);
  color: var(--manual-text);
  font-size: 1rem;
  font-weight: 650;
  line-height: 1.2;
}

.manual-search-results {
  display: grid;
  gap: 0.5rem;
}

.manual-search-more {
  display: grid;
  gap: 0.5rem;
}

.manual-search-more__summary {
  min-height: var(--manual-control-height);
  display: flex;
  align-items: center;
  padding: 0.625rem 0.75rem;
  border: 1px solid var(--manual-border);
  background: var(--manual-surface-strong);
  color: var(--manual-blue-dark);
  cursor: pointer;
  font-size: 0.875rem;
  font-weight: 760;
  line-height: 1.2;
}

.manual-search-more__summary:hover {
  border-color: var(--manual-blue);
  background: var(--manual-teal-soft);
}

.manual-search-more__body {
  display: grid;
  gap: 0.5rem;
}

.manual-search-more:not([open]) .manual-search-more__body {
  display: none;
}

.mobile-manual-nav,
.manual-reader__mobile-bottom-nav {
  display: none;
}

@media (max-width: 760px) {
  .manual-reader {
    gap: 0.5rem;
    padding: 0.5rem 0.5rem var(--manual-mobile-nav-reserve);
  }

  .manual-reader-header,
  .manual-reader__header {
    min-height: auto;
    grid-template-columns: minmax(0, 1fr);
    padding: 0.625rem 0.7rem;
  }

  .manual-reader__area,
  .manual-reader__title,
  .manual-reader__page-count,
  .manual-reader__language-options {
    grid-column: 1;
  }

  .manual-reader__language-options {
    grid-row: 4;
    width: 100%;
    justify-self: start;
    justify-content: space-between;
  }

  .manual-reader__language-select {
    flex: 1;
    min-width: 0;
    max-width: 12rem;
  }

  .manual-reader__title {
    font-size: 1rem;
  }

  .manual-reader__search-button {
    display: none;
  }

  .manual-primary-controls,
  .manual-reader__primary-controls {
    position: static;
    justify-content: stretch;
    padding: 0.5rem;
  }

  .manual-primary-controls > *,
  .manual-reader__primary-controls > * {
    flex: 1 1 7rem;
  }

  .manual-reader__primary-page-step,
  .manual-reader__primary-contents {
    display: none;
  }

  .manual-reader__page-form {
    flex: 1 1 8rem;
    justify-content: center;
  }

  .manual-page-stage,
  .manual-reader__stage {
    padding-top: 0.25rem;
  }

  .manual-reader__page-figure {
    width: 100%;
  }

  .manual-reader__page-image {
    max-height: calc(100dvh - 14.5rem);
  }

  .manual-reader__nearby-pages {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    width: 100%;
  }

  .manual-reader__nearby-page {
    min-height: 4.75rem;
  }

  .manual-reader__nearby-image {
    height: 2.875rem;
  }

  .manual-drawer,
  .manual-reader__drawer {
    inset: auto 0 var(--manual-mobile-nav-reserve);
    top: 0;
    width: 100%;
    max-height: calc(100dvh - var(--manual-mobile-nav-reserve));
    padding: 0.875rem;
    border-right: 0;
    border-left: 0;
    border-bottom: 0;
  }

  .manual-reader__chapter-actions,
  .manual-tools-grid,
  .manual-reader__tool-actions {
    grid-template-columns: 1fr;
  }

  .manual-reader__fit-controls {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .mobile-manual-nav,
  .manual-reader__mobile-bottom-nav {
    position: fixed;
    right: 0;
    bottom: 0;
    left: 0;
    z-index: 50;
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0.375rem;
    min-height: var(--manual-mobile-nav-reserve);
    padding: 0.5rem;
    padding-bottom: calc(0.5rem + env(safe-area-inset-bottom));
    border-top: 1px solid var(--manual-border-strong);
    background: rgb(255 255 255 / 97%);
    box-shadow: 0 -8px 22px rgb(23 33 38 / 12%);
  }

  .manual-reader__mobile-button {
    min-width: 0;
    min-height: 3rem;
    padding: 0.45rem 0.35rem;
    font-size: 0.75rem;
    line-height: 1.1;
    overflow-wrap: normal;
    white-space: nowrap;
  }
}

@media (max-width: 420px) {
  .manual-reader__header {
    gap: 0.25rem 0.5rem;
  }

  .manual-reader__title {
    white-space: normal;
  }

  .manual-reader__button,
  .manual-reader__button--link,
  .manual-reader__search-button {
    min-height: 2.35rem;
    padding: 0.5rem 0.55rem;
    font-size: 0.8125rem;
  }

  .manual-reader__page-input {
    width: 3.6rem;
  }
}

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

  .manual-reader {
    display: block;
    min-height: 0;
    padding: 0;
    background: #ffffff;
  }

  .manual-reader-header,
  .manual-reader__header,
  .manual-primary-controls,
  .manual-reader__primary-controls,
  .manual-drawer,
  .manual-reader__drawer,
  .mobile-manual-nav,
  .manual-reader__mobile-bottom-nav,
  .manual-reader__nearby-pages,
  .manual-reader__page-caption {
    display: none !important;
  }

  .manual-reader__page-image {
    max-height: none;
    border: 0;
    box-shadow: none;
  }
}