.reading-library-page,
.book-reader-page {
  --reader-paper: #fffdf8;
  --reader-panel: #fcfaf6;
  --reader-notes: #fcfaf6;
  --reader-ground: #f2ede5;
  --reader-header: #fcfbf8;
  --reader-line: #d9cebf;
  --reader-ink: #302b26;
  --reader-muted: #85796e;
  --reader-red: #a84b43;
  --reader-red-soft: #f2e3dd;
  --reader-shadow: rgba(76, 57, 39, 0.11);
  --reader-highlight-yellow: #f5dfa0;
  --reader-highlight-mint: #cce8d7;
  --reader-highlight-pink: #f3cbd2;
  --reader-highlight-blue: #c9e1f1;
}

html[data-theme="night"] .reading-library-page,
html[data-theme="night"] .book-reader-page {
  --reader-paper: #211e1a;
  --reader-panel: #24201c;
  --reader-notes: #24201c;
  --reader-ground: #171513;
  --reader-header: #1d1a17;
  --reader-line: #423a32;
  --reader-ink: #e9dfd1;
  --reader-muted: #aa9e92;
  --reader-red: #d08176;
  --reader-red-soft: #382824;
  --reader-shadow: rgba(0, 0, 0, 0.28);
  --reader-highlight-yellow: #66582e;
  --reader-highlight-mint: #315a46;
  --reader-highlight-pink: #653e46;
  --reader-highlight-blue: #365268;
}

.library-hero {
  min-height: 50vh;
  padding-bottom: 92px;
}

.library-hero-copy {
  display: block;
}

.reading-library {
  padding: 74px 0 96px;
  border-top: 1px solid var(--reader-line);
}

.reading-library-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 36px;
}

.reading-library-head h2 {
  margin: 8px 0 0;
  color: var(--reader-ink);
  font-size: clamp(30px, 3.2vw, 46px);
  font-weight: 400;
  letter-spacing: .08em;
}

.reading-library-filters {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 10px 22px;
  padding-bottom: 8px;
}

.reading-library-filters button {
  padding: 5px 0;
  color: var(--reader-muted);
  border: 0;
  border-bottom: 1px solid transparent;
  background: transparent;
  font: inherit;
  font-size: 13px;
  letter-spacing: .08em;
  cursor: pointer;
}

.reading-library-filters button:hover,
.reading-library-filters button[aria-selected="true"] {
  color: var(--reader-red);
  border-bottom-color: var(--reader-red);
}

.reading-library-kicker,
.book-reader-kicker {
  color: var(--reader-red);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 12px;
  font-style: italic;
  letter-spacing: .22em;
}

.reading-library-shelf {
  min-height: 340px;
}

.reading-library-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 38px 24px;
  align-items: start;
}

.reading-library-empty {
  margin: 72px 0;
  color: var(--reader-muted);
  text-align: center;
}

.library-book {
  display: block;
  min-width: 0;
  padding: 0;
  color: var(--reader-ink);
  border: 0;
  background: transparent;
  font: inherit;
  text-align: left;
  cursor: pointer;
}

.library-book-cover {
  position: relative;
  display: block;
  overflow: hidden;
  aspect-ratio: 1080 / 1497;
  border-radius: 2px 7px 7px 2px;
  background: #006178;
  box-shadow: -4px 5px 0 color-mix(in srgb, var(--reader-ink) 22%, transparent), 0 16px 30px rgba(45, 34, 25, .18);
  transition: transform .32s ease, box-shadow .32s ease;
}

.library-book:hover .library-book-cover,
.library-book:focus-visible .library-book-cover {
  transform: translateY(-7px);
  box-shadow: -4px 7px 0 color-mix(in srgb, var(--reader-ink) 22%, transparent), 0 24px 40px rgba(45, 34, 25, .23);
}

.library-book-cover img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.library-book-cover-progress {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  width: 0;
  height: 4px;
  background: var(--reader-red);
}

.library-book-caption {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  min-width: 0;
  padding-top: 13px;
}

.library-book-caption strong {
  display: block;
  max-width: 100%;
  margin-bottom: 7px;
  overflow: hidden;
  font-size: 16px;
  font-weight: 400;
  letter-spacing: .04em;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.library-book-caption > span {
  color: var(--reader-muted);
  font-size: 12px;
}

.library-book-status {
  margin-top: 6px;
  color: var(--reader-red);
  letter-spacing: .04em;
}

.library-book-dialog {
  width: min(470px, 100%);
  height: 100%;
  max-width: none;
  max-height: none;
  margin: 0 0 0 auto;
  padding: 52px 38px 40px;
  color: var(--reader-ink);
  border: 0;
  border-left: 1px solid var(--reader-line);
  background: var(--reader-paper);
  box-shadow: -24px 0 70px var(--reader-shadow);
}

.library-book-dialog::backdrop {
  background: rgba(34, 28, 23, .34);
  backdrop-filter: blur(3px);
}

.library-detail-close {
  position: absolute;
  top: 18px;
  right: 20px;
  width: 38px;
  height: 38px;
  padding: 0;
  color: var(--reader-muted);
  border: 0;
  background: transparent;
  font-size: 28px;
  cursor: pointer;
}

.library-detail-layout {
  display: grid;
  gap: 30px;
}

.library-detail-cover {
  width: min(210px, 54vw);
  overflow: hidden;
  aspect-ratio: 1080 / 1497;
  border-radius: 2px 7px 7px 2px;
  box-shadow: -5px 7px 0 color-mix(in srgb, var(--reader-ink) 20%, transparent), 0 20px 40px var(--reader-shadow);
}

.library-detail-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.library-detail-copy h2 {
  margin: 8px 0 6px;
  font-size: 34px;
  font-weight: 400;
  letter-spacing: .06em;
}

.library-detail-author {
  margin: 0 0 24px;
  color: var(--reader-muted);
}

.library-detail-status-label {
  display: block;
  margin-bottom: 7px;
  color: var(--reader-muted);
  font-size: 12px;
}

.library-detail-status {
  width: 100%;
  height: 42px;
  padding: 0 12px;
  color: var(--reader-ink);
  border: 1px solid var(--reader-line);
  border-radius: 6px;
  background: var(--reader-panel);
  font: inherit;
}

.library-detail-progress {
  height: 3px;
  margin: 28px 0 9px;
  overflow: hidden;
  background: var(--reader-line);
}

.library-detail-progress span {
  display: block;
  width: 0;
  height: 100%;
  background: var(--reader-red);
  transition: width .3s ease;
}

.library-detail-progress-copy {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  color: var(--reader-muted);
  font-size: 12px;
}

.library-detail-progress-copy strong {
  color: var(--reader-red);
  font-weight: 400;
}

.library-detail-facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin: 26px 0;
  border-top: 1px solid var(--reader-line);
  border-left: 1px solid var(--reader-line);
}

.library-detail-facts div {
  padding: 13px;
  border-right: 1px solid var(--reader-line);
  border-bottom: 1px solid var(--reader-line);
}

.library-detail-facts dt {
  color: var(--reader-muted);
  font-size: 11px;
}

.library-detail-facts dd {
  margin: 5px 0 0;
}

.library-detail-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.library-detail-actions a {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 12px;
  border: 1px solid var(--reader-red);
  text-decoration: none;
}

.library-detail-primary {
  color: var(--reader-paper);
  background: var(--reader-red);
}

.library-detail-secondary {
  color: var(--reader-red);
  background: transparent;
}

.book-reader-page {
  background: var(--reader-ground);
  color: var(--reader-ink);
}

.book-reader-header {
  background: color-mix(in srgb, var(--reader-ground) 97%, var(--reader-paper));
  border-bottom: 1px solid color-mix(in srgb, var(--reader-line) 72%, transparent);
  backdrop-filter: blur(10px);
}

.book-reader-breadcrumb {
  display: flex;
  align-items: center;
  min-width: 0;
  gap: 10px;
  font-size: 13px;
  letter-spacing: .08em;
  white-space: nowrap;
}

.book-reader-breadcrumb a {
  color: var(--reader-muted);
  text-decoration: none;
}

.book-reader-breadcrumb .book-reader-home-link {
  color: var(--reader-ink);
  font-size: 16px;
  font-weight: 500;
  letter-spacing: .13em;
}

.book-reader-crumb-static { color: var(--reader-muted); }

.book-reader-breadcrumb span {
  color: var(--reader-line);
}

.book-reader-breadcrumb strong {
  overflow: hidden;
  color: var(--reader-ink);
  font-weight: 400;
  text-overflow: ellipsis;
}

.book-reader-nav {
  align-items: center;
}

.reader-nav-button,
.reader-mobile-trigger {
  min-width: 34px;
  height: 34px;
  padding: 0 9px;
  color: var(--reader-muted);
  border: 1px solid var(--reader-line);
  border-radius: 999px;
  background: transparent;
  font: inherit;
  cursor: pointer;
}

.reader-nav-button:hover,
.reader-mobile-trigger:hover {
  color: var(--reader-red);
  border-color: var(--reader-red);
}

.reader-mobile-trigger {
  display: none;
}

.book-reader-shell {
  padding: 110px 16px 34px;
}

.book-reader-grid {
  display: grid;
  grid-template-columns: 270px minmax(520px, 1fr) 340px;
  gap: 16px;
  align-items: start;
  max-width: 1580px;
  margin: 0 auto;
}

.book-reader-side {
  position: sticky;
  top: 110px;
  height: calc(100vh - 132px);
  overflow: auto;
  padding: 26px 20px 30px;
  border: 1px solid var(--reader-line);
  border-radius: 14px;
  background: var(--reader-panel);
  scrollbar-width: thin;
  scrollbar-color: var(--reader-line) transparent;
}

.book-reader-side-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
}

.book-reader-side h2 {
  margin: 8px 0 24px;
  color: var(--reader-ink);
  font-size: 30px;
  font-weight: 400;
  letter-spacing: .06em;
}

.reader-drawer-close {
  display: none;
  width: 38px;
  height: 38px;
  color: var(--reader-muted);
  border: 0;
  background: transparent;
  font-size: 26px;
  cursor: pointer;
}

.book-reader-search {
  display: block;
  margin-bottom: 18px;
}

.book-reader-search input {
  width: 100%;
  height: 42px;
  padding: 0 13px;
  color: var(--reader-ink);
  border: 1px solid var(--reader-line);
  border-radius: 8px;
  outline: none;
  background: var(--reader-paper);
  font: inherit;
  font-size: 13px;
}

.book-reader-search input:focus {
  border-color: var(--reader-red);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--reader-red) 15%, transparent);
}

.book-reader-toc-list ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.reader-toc-group + .reader-toc-group {
  margin-top: 6px;
}

.reader-toc-row {
  display: flex;
  align-items: flex-start;
  gap: 4px;
}

.reader-toc-toggle {
  flex: 0 0 28px;
  width: 28px;
  height: 36px;
  padding: 0;
  color: var(--reader-muted);
  border: 0;
  background: transparent;
  cursor: pointer;
  transition: transform .2s ease;
}

.reader-toc-toggle[aria-expanded="true"] {
  transform: rotate(90deg);
}

.reader-toc-spacer {
  flex: 0 0 28px;
  width: 28px;
}

.reader-toc-link {
  flex: 1;
  min-height: 36px;
  padding: 8px 9px;
  color: var(--reader-muted);
  border: 0;
  border-radius: 7px;
  background: transparent;
  font: inherit;
  line-height: 1.55;
  text-align: left;
  cursor: pointer;
}

.reader-toc-link:hover,
.reader-toc-link.is-active {
  color: var(--reader-red);
  background: var(--reader-red-soft);
}

.reader-toc-children {
  margin-left: 14px !important;
  padding-left: 10px !important;
  border-left: 1px solid var(--reader-line);
}

.reader-toc-children[hidden] {
  display: none;
}

.book-reader-search-results {
  margin-bottom: 16px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--reader-line);
}

.book-reader-search-results button {
  width: 100%;
  padding: 10px 8px;
  color: var(--reader-muted);
  border: 0;
  border-radius: 7px;
  background: transparent;
  font: inherit;
  text-align: left;
  cursor: pointer;
}

.book-reader-search-results button:hover {
  color: var(--reader-red);
  background: var(--reader-red-soft);
}

.book-reader-search-results strong,
.book-reader-search-results span {
  display: block;
}

.book-reader-search-results span {
  margin-top: 5px;
  font-size: 12px;
  line-height: 1.6;
}

.book-reader-sheet {
  min-width: 0;
  min-height: calc(100vh - 144px);
  padding: clamp(34px, 5vw, 72px) clamp(34px, 6vw, 86px) 48px;
  overflow: hidden;
  border: 1px solid var(--reader-line);
  border-radius: 8px;
  background: var(--reader-paper);
  box-shadow: 0 18px 54px var(--reader-shadow);
}

.book-reader-chapter-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 30px;
  margin-bottom: 44px;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--reader-line);
}

.book-reader-location,
.book-reader-percentage {
  color: var(--reader-muted);
  font-size: 12px;
  letter-spacing: .12em;
}

.book-reader-chapter-head h1 {
  margin: 12px 0 0;
  color: var(--reader-ink);
  font-size: clamp(30px, 4vw, 48px);
  font-weight: 400;
  letter-spacing: .08em;
  line-height: 1.35;
}

.book-reader-content {
  max-width: 760px;
  margin: 0 auto;
  color: var(--reader-ink);
  font-size: var(--book-reader-font-size, 19px);
  line-height: 2.05;
  outline: none;
}

.book-reader-content h1,
.book-reader-content h2,
.book-reader-content h3,
.book-reader-content h4 {
  color: var(--reader-ink);
  font-weight: 400;
  line-height: 1.55;
}

.book-reader-content h1 {
  margin: 0 0 44px;
  font-size: 1.9em;
  text-align: center;
  letter-spacing: .1em;
}

.book-reader-content h2 {
  margin: 58px 0 28px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--reader-line);
  font-size: 1.55em;
  letter-spacing: .08em;
}

.book-reader-content h3 {
  margin: 48px 0 22px;
  color: var(--reader-red);
  font-size: 1.3em;
  letter-spacing: .06em;
}

.book-reader-content p {
  margin: 0 0 1.45em;
  text-align: justify;
  text-indent: 2em;
}

.book-reader-content [data-reader-block-index] { scroll-margin-top: 104px; }

.book-reader-content blockquote {
  margin: 2em 0;
  padding: 1em 1.4em;
  color: var(--reader-muted);
  border-left: 3px solid var(--reader-red);
  background: var(--reader-ground);
}

.book-reader-content img {
  display: block;
  max-width: 100%;
  height: auto;
  margin: 30px auto;
}

.book-reader-content table {
  width: 100%;
  margin: 28px 0;
  border-collapse: collapse;
}

.book-reader-content th,
.book-reader-content td {
  padding: 9px 12px;
  border: 1px solid var(--reader-line);
}

.reader-user-highlight {
  padding: 1px 2px;
  border-radius: 2px;
  background: var(--reader-highlight-yellow);
  box-decoration-break: clone;
  -webkit-box-decoration-break: clone;
  cursor: pointer;
}

.reader-user-highlight[data-color="mint"] { background: var(--reader-highlight-mint); }
.reader-user-highlight[data-color="pink"] { background: var(--reader-highlight-pink); }
.reader-user-highlight[data-color="blue"] { background: var(--reader-highlight-blue); }
.reader-user-highlight.is-active { box-shadow: 0 0 0 2px var(--reader-red); }

.book-reader-pager {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  margin-top: 64px;
  padding-top: 24px;
  border-top: 1px solid var(--reader-line);
}

.book-reader-pager button {
  min-height: 44px;
  padding: 9px 16px;
  color: var(--reader-muted);
  border: 1px solid var(--reader-line);
  border-radius: 8px;
  background: transparent;
  font: inherit;
  cursor: pointer;
}

.book-reader-pager button:hover:not(:disabled) {
  color: var(--reader-red);
  border-color: var(--reader-red);
}

.book-reader-pager button:disabled {
  opacity: .35;
  cursor: default;
}

.book-reader-note-tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 20px;
}

.book-reader-note-tabs button {
  min-height: 38px;
  padding: 7px 12px;
  color: var(--reader-muted);
  border: 1px solid var(--reader-line);
  border-radius: 999px;
  background: transparent;
  font: inherit;
  cursor: pointer;
}

.book-reader-note-tabs button[aria-selected="true"] {
  color: #fffaf4;
  border-color: var(--reader-red);
  background: var(--reader-red);
}

.reader-empty-state {
  padding: 26px 18px;
  color: var(--reader-muted);
  border: 1px dashed var(--reader-line);
  border-radius: 10px;
  text-align: center;
}

.reader-empty-state strong {
  display: block;
  margin-bottom: 10px;
  color: var(--reader-ink);
  font-weight: 400;
}

.reader-empty-state p {
  margin: 0;
  font-size: 13px;
  line-height: 1.8;
}

.reader-note-card {
  padding: 16px;
  border: 1px solid var(--reader-line);
  border-left: 3px solid #d8b348;
  border-radius: 8px;
  background: var(--reader-paper);
  transition: box-shadow .2s ease, border-color .2s ease;
}

.reader-note-card + .reader-note-card {
  margin-top: 14px;
}

.reader-note-card[data-color="mint"] { border-left-color: #62ae88; }
.reader-note-card[data-color="pink"] { border-left-color: #cf7787; }
.reader-note-card[data-color="blue"] { border-left-color: #629dcc; }
.reader-note-card.is-active { box-shadow: 0 0 0 2px color-mix(in srgb, var(--reader-red) 40%, transparent); }

.reader-note-chapter {
  display: block;
  margin-bottom: 8px;
  color: var(--reader-red);
  font-size: 11px;
  letter-spacing: .08em;
}

.reader-note-quote {
  margin: 0 0 12px;
  color: var(--reader-muted);
  font-size: 13px;
  line-height: 1.75;
  cursor: pointer;
}

.reader-saved-excerpt {
  white-space: normal;
}

.reader-saved-paragraph {
  display: block;
  margin: 0 0 .72em;
  text-align: justify;
  text-indent: 2em;
}

.reader-saved-paragraph:last-child { margin-bottom: 0; }

.reader-note-section-path {
  display: block;
  margin: 0 0 8px;
  padding: 0;
  color: var(--reader-red);
  border: 0;
  background: transparent;
  font: inherit;
  font-size: 11px;
  line-height: 1.55;
  text-align: left;
  cursor: pointer;
}

.reader-global-tags-link {
  display: inline-block;
  margin: -4px 0 14px;
  color: var(--reader-red);
  font-size: 12px;
  text-decoration: none;
}

.reader-note-card textarea {
  display: block;
  width: 100%;
  min-height: 102px;
  padding: 10px;
  resize: vertical;
  color: var(--reader-ink);
  border: 1px solid var(--reader-line);
  border-radius: 7px;
  outline: none;
  background: var(--reader-panel);
  font: inherit;
  font-size: 14px;
  line-height: 1.7;
}

.reader-note-card textarea:focus {
  border-color: var(--reader-red);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--reader-red) 14%, transparent);
}

.reader-note-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 10px;
  color: var(--reader-muted);
  font-size: 11px;
}

.reader-note-delete {
  padding: 4px 0;
  color: var(--reader-muted);
  border: 0;
  background: transparent;
  cursor: pointer;
}

.reader-note-delete:hover { color: var(--reader-red); }

.reader-selection-toolbar {
  position: fixed;
  z-index: 120;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  border: 1px solid var(--reader-line);
  border-radius: 10px;
  background: var(--reader-paper);
  box-shadow: 0 12px 34px var(--reader-shadow);
}

.reader-selection-toolbar[hidden] { display: none; }

.reader-selection-toolbar > span {
  width: 1px;
  height: 24px;
  background: var(--reader-line);
}

.reader-color-swatch {
  width: 26px;
  height: 26px;
  padding: 0;
  border: 1px solid rgba(0, 0, 0, .12);
  border-radius: 50%;
  cursor: pointer;
}

.reader-color-swatch.is-yellow { background: #f5dfa0; }
.reader-color-swatch.is-mint { background: #cce8d7; }
.reader-color-swatch.is-pink { background: #f3cbd2; }
.reader-color-swatch.is-blue { background: #c9e1f1; }

.reader-selection-note {
  min-height: 30px;
  padding: 4px 8px;
  color: var(--reader-red);
  border: 0;
  background: transparent;
  font: inherit;
  cursor: pointer;
}

.reader-loading {
  color: var(--reader-muted);
  text-align: center;
}

.reader-toast {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 150;
  max-width: 320px;
  padding: 11px 16px;
  color: var(--reader-ink);
  border: 1px solid var(--reader-line);
  border-radius: 9px;
  background: var(--reader-paper);
  box-shadow: 0 12px 34px var(--reader-shadow);
}

.reader-toast[hidden] { display: none; }

.reader-drawer-backdrop {
  display: none;
}

@media (max-width: 1260px) {
  .reading-library-grid {
    column-gap: 18px;
  }

  .book-reader-grid {
    grid-template-columns: 238px minmax(460px, 1fr) 300px;
  }

  .book-reader-sheet {
    padding-right: 44px;
    padding-left: 44px;
  }
}

@media (max-width: 1000px) {
  .reading-library-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (max-width: 1040px) {
  .book-reader-grid {
    grid-template-columns: 220px minmax(420px, 1fr) 276px;
    gap: 10px;
  }

  .book-reader-side {
    padding-right: 14px;
    padding-left: 14px;
  }

  .book-reader-sheet {
    padding-right: 32px;
    padding-left: 32px;
  }
}

@media (max-width: 900px) {
  .book-reader-header {
    padding-right: 18px;
    padding-left: 18px;
  }

  .book-reader-breadcrumb .book-reader-crumb-static,
  .book-reader-breadcrumb .book-reader-crumb-static + span {
    display: none;
  }

  .reader-mobile-trigger,
  .reader-drawer-close {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  .reader-bookmark-button,
  .book-reader-nav > a {
    display: none;
  }

  .book-reader-shell {
    padding: 92px 0 0;
  }

  .book-reader-grid {
    display: block;
  }

  .book-reader-sheet {
    min-height: calc(100vh - 92px);
    padding: 34px 24px 42px;
    border-right: 0;
    border-left: 0;
    border-radius: 0;
    box-shadow: none;
  }

  .book-reader-side {
    position: fixed;
    top: 0;
    bottom: 0;
    z-index: 140;
    width: min(86vw, 360px);
    height: 100vh;
    padding-top: 30px;
    border-radius: 0;
    transition: transform .25s ease;
  }

  .book-reader-toc {
    left: 0;
    transform: translateX(-104%);
  }

  .book-reader-notes {
    right: 0;
    transform: translateX(104%);
  }

  .book-reader-page.is-toc-open .book-reader-toc,
  .book-reader-page.is-notes-open .book-reader-notes {
    transform: translateX(0);
  }

  .reader-drawer-backdrop {
    position: fixed;
    inset: 0;
    z-index: 130;
    display: none;
    border: 0;
    background: rgba(0, 0, 0, .36);
  }

  .book-reader-page.is-toc-open .reader-drawer-backdrop,
  .book-reader-page.is-notes-open .reader-drawer-backdrop {
    display: block;
  }
}

@media (max-width: 680px) {
  .reading-library-head {
    align-items: flex-start;
    flex-direction: column;
  }

  .reading-library-shelf {
    min-height: 240px;
  }

  .reading-library-head {
    margin-bottom: 28px;
  }

  .reading-library-filters {
    justify-content: flex-start;
    gap: 8px 17px;
    width: 100%;
    padding-bottom: 0;
  }

  .reading-library-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 28px 13px;
  }

  .library-book-caption {
    padding-top: 10px;
  }

  .library-book-caption strong {
    margin-bottom: 5px;
    font-size: 13px;
  }

  .library-book-caption > span:not(.library-book-status) {
    display: none;
  }

  .library-book-status {
    margin-top: 0;
    font-size: 10px !important;
  }

  .library-book-dialog {
    width: 100%;
    height: auto;
    max-height: 88vh;
    margin: auto 0 0;
    padding: 46px 22px 26px;
    overflow: auto;
    border-top: 1px solid var(--reader-line);
    border-left: 0;
    border-radius: 18px 18px 0 0;
  }

  .library-detail-layout {
    grid-template-columns: 112px minmax(0, 1fr);
    align-items: start;
    gap: 22px;
  }

  .library-detail-cover {
    width: 112px;
    grid-row: 1 / span 3;
  }

  .library-detail-copy h2 {
    font-size: 25px;
  }

  .library-detail-author {
    margin-bottom: 16px;
  }

  .library-detail-status-label,
  .library-detail-status,
  .library-detail-progress,
  .library-detail-progress-copy,
  .library-detail-facts,
  .library-detail-actions {
    grid-column: 1 / -1;
  }

  .library-detail-copy {
    display: contents;
  }

  .library-detail-copy > .reading-library-kicker,
  .library-detail-copy > h2,
  .library-detail-copy > .library-detail-author {
    grid-column: 2;
  }

  .library-detail-copy > .reading-library-kicker { align-self: end; }

  .library-detail-status-label { margin-top: 4px; }

  .book-reader-header {
    gap: 10px;
  }

  .book-reader-breadcrumb strong {
    max-width: 8em;
  }

  .book-reader-nav {
    gap: 5px;
  }

  .reader-nav-button {
    display: none;
  }

  .reader-mobile-trigger {
    display: inline-flex;
  }

  .book-reader-chapter-head {
    margin-bottom: 30px;
  }

  .book-reader-chapter-head h1 {
    font-size: 30px;
  }

  .book-reader-content {
    font-size: var(--book-reader-font-size-mobile, 17px);
    line-height: 2;
  }

  .book-reader-content h1 { font-size: 1.65em; }
  .book-reader-content h2 { margin-top: 46px; font-size: 1.4em; }
  .book-reader-content h3 { margin-top: 38px; font-size: 1.22em; }

  .reader-selection-toolbar {
    max-width: calc(100vw - 20px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .library-book-cover,
  .book-reader-side,
  .library-progress > span {
    transition: none;
  }
}

/* Refined reading room: quieter chrome, wider text, lighter side panels. */
.book-reader-header {
  position: sticky;
  top: 0;
  right: auto;
  left: auto;
  z-index: 130;
  min-height: 85px;
  padding: 28px 48px;
  background: var(--reader-header);
  backdrop-filter: none;
  border-bottom-color: color-mix(in srgb, var(--reader-line) 68%, transparent);
  box-shadow: none;
  opacity: 1;
  transform: translateY(0);
  transition: transform .24s ease, opacity .18s ease;
  will-change: transform;
}

.book-reader-page.is-reader-header-hidden .book-reader-header {
  opacity: 0;
  transform: translateY(calc(-100% - 1px));
  pointer-events: none;
}

.book-reader-nav {
  display: flex;
  align-items: center;
  gap: 18px;
  font-size: 13px;
  letter-spacing: .08em;
}

.book-reader-nav a {
  color: var(--reader-muted);
  text-decoration: none;
}

.book-reader-nav a:hover { color: var(--reader-red); }

.book-reader-header-percentage {
  color: var(--reader-red);
  font-size: 12px;
  letter-spacing: .1em;
}

.reader-header-progress {
  position: absolute;
  right: 0;
  bottom: -1px;
  left: 0;
  height: 2px;
  overflow: hidden;
  background: transparent;
}

.reader-header-progress span {
  display: block;
  width: 0;
  height: 100%;
  background: var(--reader-red);
  transition: width .18s ease;
}

.book-reader-shell {
  position: relative;
  left: 0;
  width: min(2380px, calc(100% - 24px));
  margin: 0 auto;
  padding: 18px 0 30px;
}

.book-reader-grid {
  --reader-toc-column: clamp(320px, 19vw, 360px);
  --reader-notes-column: clamp(350px, 20.5vw, 390px);
  grid-template-columns: var(--reader-toc-column) minmax(560px, 1fr) var(--reader-notes-column);
  gap: 12px;
  max-width: none;
  width: 100%;
}

.book-reader-side {
  top: 16px;
  height: calc(100vh - 32px);
  border-radius: 16px;
  box-shadow: 0 14px 40px rgba(77, 58, 43, .055);
  scrollbar-width: thin;
  scrollbar-color: transparent transparent;
  scrollbar-gutter: stable;
}

.book-reader-side::-webkit-scrollbar { width: 8px; }

.book-reader-side::-webkit-scrollbar-track { background: transparent; }

.book-reader-side::-webkit-scrollbar-thumb {
  border: 3px solid transparent;
  border-radius: 999px;
  background: transparent;
  background-clip: content-box;
}

.book-reader-side.is-scrolling {
  scrollbar-color: color-mix(in srgb, var(--reader-muted) 58%, transparent) transparent;
}

.book-reader-side.is-scrolling::-webkit-scrollbar-thumb {
  border-width: 1px;
  background-color: color-mix(in srgb, var(--reader-muted) 58%, transparent);
}

.book-reader-toc {
  padding: 24px 18px 28px 30px;
  background: var(--reader-panel);
}

.book-reader-notes {
  padding: 24px 18px 28px;
  background: var(--reader-panel);
}

.book-reader-side h2 {
  margin: 6px 0 19px;
  font-size: 25px;
  letter-spacing: .1em;
}

.book-reader-search { margin-bottom: 12px; }

.book-reader-search input {
  height: 38px;
  padding: 0 11px;
  border-radius: 4px;
  background: color-mix(in srgb, var(--reader-paper) 68%, transparent);
}

.reader-toc-group + .reader-toc-group { margin-top: 0; }

.reader-toc-row {
  align-items: stretch;
  gap: 0;
  border-bottom: 1px solid color-mix(in srgb, var(--reader-line) 65%, transparent);
}

.reader-toc-toggle {
  flex-basis: 24px;
  width: 24px;
  height: auto;
  min-height: 43px;
}

.reader-toc-spacer {
  flex-basis: 24px;
  width: 24px;
}

.reader-toc-link {
  min-height: 43px;
  padding: 10px 7px;
  border-radius: 0;
  font-size: 13px;
}

.reader-toc-link:hover {
  color: var(--reader-red);
  background: transparent;
}

.reader-toc-link.is-active {
  color: var(--reader-red);
  background: color-mix(in srgb, var(--reader-red-soft) 32%, transparent);
  box-shadow: inset 3px 0 0 var(--reader-red);
  font-weight: 500;
}

.reader-toc-children {
  margin-left: 0 !important;
  padding-left: 0 !important;
  border-left: 0;
}

.reader-toc-children .reader-toc-row { padding-left: 11px; }
.reader-toc-children .reader-toc-children .reader-toc-row { padding-left: 22px; }

.book-reader-toc-list > ul > .reader-toc-group > .reader-toc-row .reader-toc-link {
  color: var(--reader-ink);
  font-weight: 500;
}

.book-reader-toc-list > ul > .reader-toc-group > .reader-toc-row .reader-toc-link.is-active {
  color: var(--reader-red);
}

.book-reader-sheet {
  position: relative;
  min-height: calc(100vh - 118px);
  padding: clamp(42px, 4.5vw, 70px) clamp(38px, 4.6vw, 76px) 56px;
  border-radius: 16px;
  box-shadow: 0 22px 64px rgba(77, 58, 43, .085);
}

.book-reader-sheet-body { min-width: 0; }

.book-reader-chapter-head {
  margin-bottom: 48px;
  padding-bottom: 20px;
}

.book-reader-chapter-head h1 {
  font-size: clamp(32px, 3.2vw, 46px);
}

.book-reader-content {
  max-width: 900px;
  line-height: 1.96;
}

.reader-user-highlight.is-active {
  box-shadow: none;
  animation: reader-highlight-pulse 1.45s ease-in-out;
}

@keyframes reader-highlight-pulse {
  0%, 100% { filter: saturate(1) brightness(1); }
  20%, 64% { filter: saturate(1.16) brightness(.99); }
  42%, 84% { filter: saturate(.96) brightness(1.045); }
}

.book-reader-note-tabs {
  display: flex;
  gap: 22px;
  margin-bottom: 18px;
  border-bottom: 1px solid var(--reader-line);
}

.book-reader-title-tabs {
  display: flex;
  align-items: center;
  gap: 9px;
  margin: 6px 0 20px;
  color: var(--reader-line);
  font-size: 25px;
  letter-spacing: .08em;
  line-height: 1.35;
}

.book-reader-title-tabs button {
  padding: 0;
  color: var(--reader-ink);
  border: 0;
  background: transparent;
  font: inherit;
  letter-spacing: inherit;
  cursor: pointer;
}

.book-reader-title-tabs button[aria-selected="true"] {
  color: var(--reader-red);
}

.book-reader-note-tabs button {
  min-height: 34px;
  padding: 2px 0 8px;
  color: var(--reader-muted);
  border: 0;
  border-bottom: 2px solid transparent;
  border-radius: 0;
  background: transparent;
  font: inherit;
  font-size: 14px;
  letter-spacing: .04em;
  cursor: pointer;
}

.book-reader-note-tabs button[aria-selected="true"] {
  color: var(--reader-red);
  border-color: var(--reader-red);
  background: transparent;
}

#reader-notes-view,
#reader-quotes-view {
  position: static;
  padding: 0;
}

#reader-notes-view[hidden],
#reader-quotes-view[hidden] { display: none; }

.reader-empty-state {
  padding: 24px 4px;
  border: 0;
  border-radius: 0;
}

.reader-note-card {
  --reader-note-accent: #d8b348;
  padding: 14px 3px 18px 0;
  border: 0;
  border-bottom: 1px solid var(--reader-line);
  border-left: 0;
  border-radius: 0;
  background: transparent;
}

.reader-note-card[data-color="mint"] { --reader-note-accent: #62ae88; }
.reader-note-card[data-color="pink"] { --reader-note-accent: #cf7787; }
.reader-note-card[data-color="blue"] { --reader-note-accent: #629dcc; }

.reader-note-card + .reader-note-card { margin-top: 0; }
.reader-note-card.is-active {
  background: color-mix(in srgb, var(--reader-red-soft) 26%, transparent);
  box-shadow: none;
}

.reader-note-quote {
  position: relative;
  margin: 0 0 12px;
  padding: 3px 0 3px 12px;
  border-left: 2px solid var(--reader-note-accent);
}

.reader-note-quote.is-collapsed,
.reader-quote-text.is-collapsed {
  display: -webkit-box;
  overflow: hidden;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 5;
}

.reader-note-quote-toggle,
.reader-note-adjust,
.reader-note-range-tools button,
.reader-selection-cancel {
  padding: 4px 0;
  color: var(--reader-muted);
  border: 0;
  background: transparent;
  font: inherit;
  font-size: 11px;
  cursor: pointer;
}

.reader-note-quote-toggle {
  display: block;
  margin: -2px 0 10px;
}

.reader-note-quote-toggle:hover,
.reader-note-adjust:hover,
.reader-note-range-tools button:hover,
.reader-selection-cancel:hover { color: var(--reader-red); }

.reader-note-card textarea {
  width: calc(100% - 14px);
  height: 78px;
  min-height: 78px;
  max-height: 300px;
  margin-left: 14px;
  padding: 9px 10px;
  overflow-y: hidden;
  resize: none;
  border-color: color-mix(in srgb, var(--reader-line) 72%, transparent);
  border-radius: 4px;
  background: color-mix(in srgb, var(--reader-paper) 48%, transparent);
}

.reader-note-card textarea.is-scrollable { overflow-y: auto; }

.reader-note-actions {
  align-items: flex-start;
  margin-left: 14px;
}

.reader-note-action-buttons {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.reader-note-range-tools {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 12px;
  margin: 8px 0 2px;
  padding: 8px 0;
  border-top: 1px solid color-mix(in srgb, var(--reader-line) 68%, transparent);
}

.reader-note-range-tools[hidden] { display: none; }

.reader-note-range-tools button {
  width: 100%;
  padding-top: 6px;
  color: var(--reader-red);
  text-align: left;
}

.reader-selection-update,
.reader-selection-cancel { min-height: 30px; padding: 4px 8px; }

.reader-selection-update { color: var(--reader-red); }

.reader-quote-card {
  padding: 17px 3px 20px 13px;
  border-bottom: 1px solid var(--reader-line);
  border-left: 2px solid color-mix(in srgb, var(--reader-red) 62%, #d8b348);
}

.reader-quote-card + .reader-quote-card { margin-top: 0; }

.reader-quote-card.is-carousel-enabled {
  border-left-color: var(--reader-red);
}

.reader-quote-source {
  display: block;
  margin-bottom: 9px;
  color: var(--reader-red);
  font-size: 11px;
  line-height: 1.6;
  letter-spacing: .05em;
}

.reader-quote-text {
  margin: 0 0 12px;
  color: var(--reader-ink);
  font-size: 14px;
  line-height: 1.85;
  cursor: pointer;
}

.reader-note-tags { margin: 0 0 8px 14px; width: calc(100% - 14px); }

.reader-quote-tags {
  display: block;
  width: 100%;
  color: var(--reader-ink);
  border: 1px solid var(--reader-line);
  border-radius: 4px;
  outline: none;
  background: color-mix(in srgb, var(--reader-paper) 36%, transparent);
  font: inherit;
  font-size: 13px;
}

.reader-quote-tags {
  height: 34px;
  margin-top: 2px;
  padding: 0 10px;
}

.reader-quote-tags:focus { border-color: var(--reader-red); }

.reader-quote-options {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 10px;
  color: var(--reader-muted);
  font-size: 11px;
}

.reader-quote-carousel {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
}

.reader-quote-carousel input { accent-color: var(--reader-red); }

.reader-quote-actions {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.reader-quote-actions button {
  padding: 4px 0;
  color: var(--reader-muted);
  border: 0;
  background: transparent;
  font: inherit;
  font-size: 11px;
  cursor: pointer;
}

.reader-quote-actions button:hover { color: var(--reader-red); }

.reader-quote-save-state {
  display: block;
  min-height: 16px;
  margin-top: 5px;
  color: var(--reader-muted);
  font-size: 10px;
  text-align: right;
}

.reader-quote-card.is-range-editing {
  background: color-mix(in srgb, var(--reader-red-soft) 34%, transparent);
}

.reading-tags-shell {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
  padding: 72px 0 90px;
}

.reading-tags-hero { max-width: 760px; margin-bottom: 46px; }
.reading-tags-hero h1 { margin: 8px 0 12px; font-size: clamp(38px, 5vw, 64px); font-weight: 400; letter-spacing: .08em; }
.reading-tags-hero p { color: var(--reader-muted); line-height: 1.8; }
.reading-tags-hero code { color: var(--reader-red); background: transparent; }

.reading-tags-search input {
  width: min(620px, 100%);
  height: 48px;
  margin-top: 22px;
  padding: 0 16px;
  color: var(--reader-ink);
  border: 1px solid var(--reader-line);
  border-radius: 7px;
  outline: none;
  background: color-mix(in srgb, var(--reader-paper) 72%, transparent);
  font: inherit;
}
.reading-tags-search input:focus { border-color: var(--reader-red); }

.reading-tags-layout { display: grid; grid-template-columns: 260px minmax(0, 1fr); gap: 48px; align-items: start; }
.reading-tags-index { position: sticky; top: 86px; max-height: calc(100vh - 110px); overflow: auto; }
.reading-tags-index-head,
.reading-tags-toolbar { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding-bottom: 13px; border-bottom: 1px solid var(--reader-line); }
.reading-tags-index-head button,
.reading-tags-toolbar button,
.reading-tag-result-tags button { padding: 4px 0; color: var(--reader-muted); border: 0; background: transparent; font: inherit; font-size: 12px; cursor: pointer; }
.reading-tags-toolbar div { display: flex; gap: 16px; }
.reading-tags-toolbar button[aria-selected="true"] { color: var(--reader-red); }

#reading-tags-list { display: grid; gap: 2px; padding-top: 12px; }
.reading-tag-chip { display: flex; justify-content: space-between; width: 100%; padding: 9px 10px; color: var(--reader-ink); border: 0; border-radius: 4px; background: transparent; font: inherit; text-align: left; cursor: pointer; }
.reading-tag-chip:hover,
.reading-tag-chip.is-active { color: var(--reader-red); background: color-mix(in srgb, var(--reader-red-soft) 42%, transparent); }
.reading-tag-chip small { color: var(--reader-muted); }

#reading-tags-results { padding-top: 4px; }
.reading-tag-result { padding: 25px 2px 28px; border-bottom: 1px solid var(--reader-line); }
.reading-tag-result-source { display: inline-block; margin-bottom: 12px; color: var(--reader-red); font-size: 12px; line-height: 1.6; text-decoration: none; }
.reading-tag-result-quote { color: var(--reader-ink); font-size: 16px; line-height: 1.95; }
.reading-tag-result-quote p { margin: 0 0 .72em; text-align: justify; text-indent: 2em; }
.reading-tag-result-note { margin: 14px 0 0; padding: 12px 14px; color: var(--reader-muted); border-left: 2px solid var(--reader-red); background: color-mix(in srgb, var(--reader-paper) 48%, transparent); line-height: 1.75; white-space: pre-wrap; }
.reading-tag-result-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 13px; }
.reading-tag-result-tags button { color: var(--reader-red); }

@media (max-width: 760px) {
  .reading-tags-shell { width: min(100% - 28px, 680px); padding-top: 44px; }
  .reading-tags-layout { grid-template-columns: 1fr; gap: 30px; }
  .reading-tags-index { position: static; max-height: none; }
  #reading-tags-list { display: flex; flex-wrap: wrap; gap: 7px; }
  .reading-tag-chip { width: auto; gap: 8px; border: 1px solid var(--reader-line); border-radius: 999px; }
}

.reader-dock-rail {
  position: absolute;
  top: 0;
  right: 8px;
  bottom: 0;
  width: 44px;
  pointer-events: none;
}

.reader-dock {
  position: fixed;
  top: calc(50vh - 22px);
  left: var(--reader-dock-left, calc(100vw - 64px));
  z-index: 125;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 3px;
  width: 44px;
  margin-left: 0;
  padding: 5px;
  overflow: hidden;
  border: 1px solid var(--reader-line);
  border-radius: 10px;
  background: var(--reader-paper);
  box-shadow: 0 12px 30px color-mix(in srgb, var(--reader-shadow) 68%, transparent);
  backdrop-filter: none;
  transform: none;
  transition: width .24s ease, margin-left .24s ease, box-shadow .24s ease;
  pointer-events: auto;
}

.reader-dock:hover,
.reader-dock:focus-within,
.reader-dock.is-open {
  width: 88px;
  margin-left: -44px;
  box-shadow: 0 16px 38px color-mix(in srgb, var(--reader-shadow) 82%, transparent);
}

.reader-dock button {
  flex: 0 0 auto;
  min-width: 0;
  height: 38px;
  margin: 0;
  padding: 0;
  color: var(--reader-muted);
  border: 0;
  border-radius: 6px;
  background: transparent;
  font: inherit;
  cursor: pointer;
}

.reader-dock button:hover {
  color: var(--reader-red);
  background: var(--reader-red-soft);
}

.reader-dock-toggle {
  width: 28px;
  letter-spacing: .12em;
}

.reader-dock-action {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  column-gap: 6px;
  align-items: center;
  width: 76px;
  text-align: center;
}

.reader-dock-action > span:first-child {
  display: grid;
  width: 30px;
  height: 30px;
  place-items: center;
  line-height: 1;
  white-space: nowrap;
}

.reader-dock-action > span:last-child {
  display: block;
  overflow: hidden;
  opacity: 0;
  white-space: nowrap;
  text-align: left;
  line-height: 1;
  transition: opacity .16s ease .04s;
}

.reader-dock:hover .reader-dock-action > span:last-child,
.reader-dock:focus-within .reader-dock-action > span:last-child,
.reader-dock.is-open .reader-dock-action > span:last-child {
  opacity: 1;
}

.reader-dock .theme-toggle {
  display: grid;
  flex: 0 0 auto;
  width: 30px;
  min-width: 30px;
  height: 38px;
  align-items: center;
  justify-items: center;
  margin: 0;
  padding: 0;
  border: 0;
  border-radius: 6px;
}

.reader-dock .theme-toggle svg {
  width: 17px;
  height: 17px;
  justify-self: center;
}

.reader-dock .theme-toggle::after {
  display: none;
  content: "主题";
  color: inherit;
  font-size: 12px;
  line-height: 1;
  white-space: nowrap;
}

.reader-dock:hover .theme-toggle,
.reader-dock:focus-within .theme-toggle,
.reader-dock.is-open .theme-toggle {
  width: 76px;
  grid-template-columns: 30px minmax(0, 1fr);
  column-gap: 6px;
  align-items: center;
  justify-items: start;
}

.reader-dock:hover .theme-toggle::after,
.reader-dock:focus-within .theme-toggle::after,
.reader-dock.is-open .theme-toggle::after { display: block; }

@media (max-width: 900px) {
  .book-reader-sheet { padding-bottom: 100px; }
  .reader-dock-rail {
    position: static;
    width: 0;
    height: 0;
  }

  .reader-dock {
    position: fixed;
    top: auto;
    left: auto;
    right: 50%;
    bottom: 12px;
    flex-direction: row;
    width: auto !important;
    margin-left: 0 !important;
    max-width: calc(100vw - 22px);
    overflow: visible;
    padding: 5px 7px;
    border-radius: 12px;
    transform: translateX(50%);
  }

  .reader-dock-toggle { display: none; }
  .reader-dock-action,
  .reader-dock.is-open .reader-dock-action {
    display: grid;
    width: 42px;
    grid-template-columns: 42px;
  }

  .reader-dock .theme-toggle,
  .reader-dock.is-open .theme-toggle {
    display: grid;
    width: 42px;
    min-width: 42px;
    grid-template-columns: 42px;
  }

  .reader-dock-action > span:last-child { display: none; }
  .reader-dock .theme-toggle::after { display: none; }
}

@media (min-width: 901px) {
  .book-reader-page.is-toc-collapsed .book-reader-toc,
  .book-reader-page.is-notes-collapsed .book-reader-notes { display: none; }

  .book-reader-page.is-toc-collapsed:not(.is-notes-collapsed) .book-reader-grid {
    grid-template-columns: minmax(560px, 1fr) var(--reader-notes-column);
  }

  .book-reader-page.is-notes-collapsed:not(.is-toc-collapsed) .book-reader-grid {
    grid-template-columns: var(--reader-toc-column) minmax(560px, 1fr);
  }

  .book-reader-page.is-toc-collapsed.is-notes-collapsed .book-reader-grid {
    grid-template-columns: minmax(0, 1fr);
    max-width: none;
    width: 100%;
  }
}

@media (max-width: 1439px) and (min-width: 1100px) {
  .book-reader-grid {
    --reader-toc-column: clamp(270px, 23vw, 300px);
    --reader-notes-column: clamp(300px, 25vw, 330px);
    grid-template-columns: var(--reader-toc-column) minmax(0, 1fr) var(--reader-notes-column);
    gap: 10px;
  }
  .book-reader-page.is-toc-collapsed:not(.is-notes-collapsed) .book-reader-grid { grid-template-columns: minmax(0, 1fr) var(--reader-notes-column); }
  .book-reader-page.is-notes-collapsed:not(.is-toc-collapsed) .book-reader-grid { grid-template-columns: var(--reader-toc-column) minmax(0, 1fr); }
  .book-reader-sheet { padding-right: clamp(34px, 4vw, 54px); padding-left: clamp(34px, 4vw, 54px); }
}

@media (max-width: 1099px) and (min-width: 901px) {
  .book-reader-grid { grid-template-columns: 260px minmax(0, 1fr) 290px; gap: 8px; }
  .book-reader-page.is-toc-collapsed:not(.is-notes-collapsed) .book-reader-grid { grid-template-columns: minmax(0, 1fr) 290px; }
  .book-reader-page.is-notes-collapsed:not(.is-toc-collapsed) .book-reader-grid { grid-template-columns: 260px minmax(0, 1fr); }
  .book-reader-toc { padding-right: 12px; padding-left: 18px; }
  .book-reader-notes { padding-right: 12px; padding-left: 12px; }
  .book-reader-sheet { padding-right: 30px; padding-left: 30px; }
}

@media (max-width: 900px) {
  .book-reader-header {
    min-height: 64px;
    padding: 13px 16px;
  }

  .book-reader-shell { left: 0; width: 100%; padding: 0; }

  .book-reader-sheet {
    min-height: calc(100vh - 64px);
    padding-bottom: 92px;
  }

  .book-reader-side {
    top: 0;
    height: 100vh;
    border-radius: 0;
  }

  .book-reader-toc { width: min(90vw, 400px); }
  .book-reader-notes { width: min(92vw, 420px); }

  .book-reader-content [data-reader-block-index] { scroll-margin-top: 80px; }

  .reader-dock-action > span:last-child { display: none; }
}

@media (max-width: 680px) {
  .book-reader-breadcrumb { gap: 7px; font-size: 11px; }
  .book-reader-nav { gap: 10px; }
  .book-reader-sheet { padding: 32px 22px 92px; }
  .book-reader-chapter-head { margin-bottom: 34px; }
  .book-reader-content { line-height: 1.94; }
}

@media (prefers-reduced-motion: reduce) {
  .book-reader-header,
  .reader-dock,
  .reader-header-progress span { transition: none; }
  .reader-user-highlight.is-active { animation: none; }
}