:root {
  color-scheme: light;
  --paper: #f4eddf;
  --paper-deep: #e9ddc8;
  --surface: #fffaf0;
  --surface-raised: #fffdf7;
  --ink: #27221d;
  --ink-soft: #6d6256;
  --line: #d8c8ad;
  --seal: #9d2f27;
  --seal-dark: #7d241f;
  --seal-soft: #f0d9d1;
  --focus: #165d71;
  --shadow: 0 1.5rem 4rem rgba(65, 48, 31, 0.1);
  --serif: ui-serif, "Noto Serif TC", "Songti TC", "PMingLiU", serif;
  --sans: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans TC", sans-serif;
  --reading-size: 1.31rem;
  --annotation-size: 1.18rem;
  --card-size: 1.125rem;
  --support-size: 1rem;
  --reading-leading: 2;
  --shell: 76rem;
  --radius-lg: 1.5rem;
  --radius-md: 1rem;
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --paper: #171513;
  --paper-deep: #211d19;
  --surface: #24201c;
  --surface-raised: #2c2722;
  --ink: #eee5d7;
  --ink-soft: #bcb0a0;
  --line: #4c4237;
  --seal: #dc776c;
  --seal-dark: #ef968c;
  --seal-soft: #4c2724;
  --focus: #7fc8dc;
  --shadow: 0 1.5rem 4rem rgba(0, 0, 0, 0.26);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --paper: #171513;
    --paper-deep: #211d19;
    --surface: #24201c;
    --surface-raised: #2c2722;
    --ink: #eee5d7;
    --ink-soft: #bcb0a0;
    --line: #4c4237;
    --seal: #dc776c;
    --seal-dark: #ef968c;
    --seal-soft: #4c2724;
    --focus: #7fc8dc;
    --shadow: 0 1.5rem 4rem rgba(0, 0, 0, 0.26);
  }
}

:root[data-font-size="small"] {
  --reading-size: 1.18rem;
  --annotation-size: 1.08rem;
  --card-size: 1.05rem;
  --support-size: 0.95rem;
}

:root[data-font-size="large"] {
  --reading-size: 1.5rem;
  --annotation-size: 1.3rem;
  --card-size: 1.25rem;
  --support-size: 1.05rem;
}

:root[data-font-size="xlarge"] {
  --reading-size: 1.72rem;
  --annotation-size: 1.5rem;
  --card-size: 1.4rem;
  --support-size: 1.15rem;
}

:root[data-line-height="compact"] {
  --reading-leading: 1.7;
}

:root[data-line-height="airy"] {
  --reading-leading: 2.25;
}

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

html {
  min-width: 20rem;
  overflow-x: hidden;
  background: var(--paper);
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  margin: 0;
  overflow-x: hidden;
  color: var(--ink);
  background:
    radial-gradient(circle at 8% 0, color-mix(in srgb, var(--seal-soft) 45%, transparent), transparent 25rem),
    var(--paper);
  font-family: var(--sans);
  line-height: 1.6;
  text-rendering: optimizeLegibility;
}

button,
input,
select {
  color: inherit;
  font: inherit;
}

button,
select {
  cursor: pointer;
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

a {
  color: inherit;
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
[tabindex]:focus-visible {
  outline: 0.2rem solid var(--focus);
  outline-offset: 0.2rem;
}

h1,
h2,
h3,
p {
  text-wrap: pretty;
}

h1,
h2,
h3 {
  font-family: var(--serif);
  font-weight: 650;
  line-height: 1.2;
}

.app-shell {
  width: min(calc(100% - 2rem), var(--shell));
  margin-inline: auto;
}

.skip-link {
  position: fixed;
  z-index: 1000;
  top: 0.75rem;
  left: 0.75rem;
  padding: 0.7rem 1rem;
  border-radius: 0.6rem;
  background: var(--surface-raised);
  box-shadow: var(--shadow);
  transform: translateY(-200%);
}

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

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

.app-header {
  position: sticky;
  z-index: 30;
  top: 0;
  border-bottom: 1px solid color-mix(in srgb, var(--line) 70%, transparent);
  background: color-mix(in srgb, var(--paper) 90%, transparent);
  backdrop-filter: blur(1rem);
}

.app-header__inner {
  display: flex;
  min-height: 4.4rem;
  align-items: center;
  gap: 1.5rem;
}

.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  font-family: var(--serif);
  font-size: 1.08rem;
  font-weight: 750;
  letter-spacing: 0.05em;
  text-decoration: none;
}

.wordmark img {
  border-radius: 0.45rem;
}

.desktop-nav {
  display: flex;
  align-self: stretch;
  gap: 0.25rem;
  margin-left: auto;
}

.desktop-nav a,
.install-nav-button {
  display: grid;
  min-width: 4.5rem;
  place-items: center;
  border-bottom: 0.18rem solid transparent;
  color: var(--ink-soft);
  font-size: 0.92rem;
  font-weight: 700;
  text-decoration: none;
}

.install-nav-button {
  padding: 0 0.8rem;
  border-top: 0;
  border-right: 0;
  border-left: 0;
  background: transparent;
}

.desktop-nav a:hover,
.desktop-nav a[aria-current="page"],
.install-nav-button:hover {
  border-color: var(--seal);
  color: var(--ink);
}

.icon-button {
  display: inline-grid;
  width: 2.8rem;
  height: 2.8rem;
  flex: 0 0 auto;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: var(--surface);
  font-family: var(--serif);
  font-size: 1rem;
  font-weight: 700;
}

.icon-button:hover {
  border-color: var(--seal);
}

.eyebrow {
  margin: 0 0 0.65rem;
  color: var(--seal-dark);
  font-size: 0.73rem;
  font-weight: 850;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.home-hero {
  position: relative;
  padding-block: clamp(3rem, 7vw, 5rem) clamp(2rem, 5vw, 3.5rem);
}

.home-hero::after {
  position: absolute;
  z-index: -1;
  top: clamp(3rem, 8vw, 6rem);
  right: clamp(0rem, 5vw, 5rem);
  width: clamp(7rem, 18vw, 12rem);
  aspect-ratio: 1;
  border: 1px solid color-mix(in srgb, var(--seal) 30%, transparent);
  border-radius: 50%;
  box-shadow:
    0 0 0 1.5rem color-mix(in srgb, var(--seal-soft) 30%, transparent),
    0 0 0 4rem color-mix(in srgb, var(--seal-soft) 18%, transparent);
  content: "";
}

.home-hero h1 {
  margin: 0 0 0.8rem;
  font-size: clamp(2.8rem, 7vw, 4.8rem);
  letter-spacing: 0.08em;
}

.home-hero__lede {
  max-width: 39rem;
  margin: 0;
  color: var(--ink-soft);
  font-family: var(--serif);
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  line-height: 1.85;
}

.continue-card {
  display: flex;
  width: min(100%, 40rem);
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 2rem;
  padding: 1rem 1.15rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: color-mix(in srgb, var(--surface) 88%, transparent);
  box-shadow: 0 0.8rem 2rem rgba(65, 48, 31, 0.07);
  text-decoration: none;
}

.continue-card:hover {
  border-color: var(--seal);
}

.continue-card p,
.continue-card strong {
  margin: 0;
}

.continue-card p {
  color: var(--ink-soft);
  font-size: 0.83rem;
}

.continue-card strong {
  display: block;
  margin-top: 0.2rem;
  font-family: var(--serif);
}

.continue-card__action {
  flex: 0 0 auto;
  color: var(--seal-dark);
  font-weight: 800;
}

.home-library,
.library-section {
  padding-bottom: clamp(6rem, 12vw, 10rem);
}

.home-mode-switch {
  display: grid;
  width: min(100%, 34rem);
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.5rem;
  margin-bottom: 2rem;
  padding: 0.4rem;
  border: 1px solid var(--line);
  border-radius: 1rem;
  background: color-mix(in srgb, var(--surface) 82%, transparent);
}

.home-mode-switch button {
  min-height: 3.5rem;
  padding: 0.65rem 1rem;
  border: 0;
  border-radius: 0.7rem;
  color: var(--ink-soft);
  background: transparent;
  font-size: var(--card-size);
  font-weight: 850;
}

.home-mode-switch button[aria-selected="true"] {
  color: #fff;
  background: var(--seal-dark);
  box-shadow: 0 0.4rem 1rem rgb(65 48 31 / 0.13);
}

.home-mode-panel[hidden] {
  display: none;
}

.category-section {
  padding-block: clamp(3rem, 8vw, 6rem);
}

.section-heading,
.reading-heading,
.results-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 1rem;
}

.section-heading {
  margin-bottom: 1.5rem;
}

.section-heading h2,
.reading-heading h2,
.results-heading h2 {
  margin: 0;
  font-size: clamp(1.8rem, 4vw, 2.8rem);
}

.section-meta {
  margin: 0;
  color: var(--ink-soft);
  font-size: var(--support-size);
}

.category-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.85rem;
}

.category-card {
  display: flex;
  min-height: 15.5rem;
  flex-direction: column;
  padding: 1.4rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  color: var(--ink);
  background: color-mix(in srgb, var(--surface) 88%, transparent);
  text-decoration: none;
  transition: border-color 180ms ease, transform 180ms ease, box-shadow 180ms ease;
}

.category-card:hover {
  border-color: var(--seal);
  box-shadow: 0 0.8rem 2rem rgb(65 48 31 / 0.08);
  transform: translateY(-0.15rem);
}

.category-card__number {
  color: var(--seal-dark);
  font-size: var(--support-size);
  font-weight: 850;
}

.category-card h3 {
  margin: 1.2rem 0 0.7rem;
  font-size: clamp(1.6rem, 3vw, 2.15rem);
}

.category-card__description {
  margin: 0;
  color: var(--ink-soft);
  font-family: var(--serif);
  font-size: var(--card-size);
  line-height: 1.75;
}

.category-card__meta {
  margin: auto 0 0;
  padding-top: 1.2rem;
  color: var(--seal-dark);
  font-size: var(--support-size);
  font-weight: 800;
}

.category-grid--compact .category-card {
  min-height: 8rem;
  padding: 1rem;
}

.category-grid--compact .category-card h3 {
  margin: 0.5rem 0 0;
  font-size: clamp(1.35rem, 3vw, 1.8rem);
}

.category-grid--compact .category-card__meta {
  margin: auto 0 0;
  padding-top: 0.55rem;
}

.category-grid--compact .category-card[aria-current="page"] {
  border-color: var(--seal);
  background: color-mix(in srgb, var(--seal-soft) 48%, var(--surface));
  box-shadow: inset 0 0 0 0.12rem color-mix(in srgb, var(--seal) 45%, transparent);
}

.book-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.book-card {
  position: relative;
  display: flex;
  min-height: 18rem;
  flex-direction: column;
  justify-content: space-between;
  padding: clamp(1.4rem, 4vw, 2.3rem);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: var(--shadow);
  overflow: hidden;
  text-decoration: none;
  transition: border-color 180ms ease, transform 180ms ease;
}

.book-card::after {
  position: absolute;
  right: -2.5rem;
  bottom: -4rem;
  width: 11rem;
  height: 14rem;
  border: 1px solid currentColor;
  border-radius: 50% 50% 0 0;
  content: "";
  opacity: 0.1;
  transform: rotate(-13deg);
}

.book-card:hover {
  border-color: currentColor;
  transform: translateY(-0.3rem);
}

.book-card[data-accent="plum"] {
  color: #853d55;
}

.book-card[data-accent="moss"] {
  color: #4e684f;
}

.book-card[data-accent="indigo"] {
  color: #4b587f;
}

.book-card[data-accent="clay"] {
  color: #98613f;
}

:root[data-theme="dark"] .book-card {
  color: var(--seal-dark);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .book-card {
    color: var(--seal-dark);
  }
}

.book-card__number {
  color: currentColor;
  font-size: 0.78rem;
  font-weight: 850;
  letter-spacing: 0.16em;
}

.book-card h3 {
  margin: 1.1rem 0 0.45rem;
  color: var(--ink);
  font-size: clamp(2rem, 5vw, 3.35rem);
  letter-spacing: 0.08em;
}

.book-card__author,
.book-card__description {
  color: var(--ink-soft);
  font-size: var(--card-size);
}

.book-card__author {
  margin: 0 0 1rem;
  font-family: var(--serif);
}

.book-card__description {
  max-width: 29rem;
  margin: 0;
}

.book-card__meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 2rem;
  color: var(--ink);
  font-size: var(--support-size);
  font-weight: 800;
}

.reader-hero {
  position: relative;
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}

.reader-hero__wash {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(115deg, color-mix(in srgb, var(--seal-soft) 60%, transparent), transparent 55%),
    repeating-linear-gradient(90deg, transparent 0 4.9rem, color-mix(in srgb, var(--line) 18%, transparent) 5rem);
  pointer-events: none;
}

.reader-hero__inner {
  position: relative;
  padding-block: clamp(3rem, 8vw, 6rem);
}

.back-link {
  display: inline-block;
  margin-bottom: clamp(2rem, 5vw, 4rem);
  color: var(--ink-soft);
  font-size: 0.9rem;
  font-weight: 700;
  text-decoration: none;
}

.back-link:hover {
  color: var(--seal-dark);
}

.reader-hero h1 {
  margin: 0 0 0.8rem;
  font-size: clamp(3rem, 8vw, 5.5rem);
  letter-spacing: 0.12em;
}

.reader-hero__description {
  max-width: 38rem;
  margin: 0;
  color: var(--ink-soft);
  font-family: var(--serif);
  font-size: 1.08rem;
}

.reader-tools {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-top: 1.8rem;
}

.reader-tools a {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
}

.book-overview {
  display: grid;
  grid-template-columns: minmax(14rem, 20rem) minmax(0, 48rem);
  justify-content: center;
  gap: clamp(2rem, 6vw, 5rem);
  padding-block: clamp(3rem, 7vw, 5.5rem) 8rem;
}

.book-progress-card {
  align-self: start;
  padding: 1.4rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: color-mix(in srgb, var(--surface) 86%, transparent);
}

.book-progress-card h2 {
  margin: 0 0 0.75rem;
  font-size: 1.5rem;
}

.book-progress-card p:last-child {
  margin: 0;
  color: var(--ink-soft);
  font-family: var(--serif);
  font-size: var(--card-size);
  line-height: 1.75;
}

.book-section-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.85rem;
}

.book-section-card {
  display: grid;
  min-height: 8.5rem;
  align-content: start;
  gap: 0.35rem;
  padding: 1.15rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  color: var(--ink);
  background: var(--surface);
  text-decoration: none;
}

.book-section-card:hover {
  border-color: var(--seal);
}

.book-section-card strong {
  font-size: var(--card-size);
}

.book-section-card span {
  color: var(--ink-soft);
}

.book-section-card small {
  margin-top: auto;
  color: var(--seal-dark);
  font-weight: 800;
}

.quiet-button,
.primary-button,
.danger-button {
  min-height: 2.8rem;
  padding: 0.65rem 1rem;
  border-radius: 0.75rem;
  font-weight: 750;
}

.quiet-button {
  border: 1px solid var(--line);
  background: var(--surface);
}

.quiet-button:hover {
  border-color: var(--seal);
}

.primary-button {
  border: 1px solid var(--seal-dark);
  color: #fff;
  background: var(--seal-dark);
}

.primary-button:hover {
  background: var(--seal);
}

.danger-button {
  border: 1px solid color-mix(in srgb, var(--seal) 65%, var(--line));
  color: var(--seal-dark);
  background: var(--seal-soft);
}

.reader-layout {
  display: grid;
  grid-template-columns: 15rem minmax(0, 44rem);
  justify-content: center;
  gap: clamp(2rem, 7vw, 6rem);
  padding-block: clamp(3rem, 8vw, 6rem) 8rem;
}

.reader-toc {
  position: sticky;
  top: 6.5rem;
  align-self: start;
  max-height: calc(100vh - 8rem);
  padding-right: 1rem;
  overflow-y: auto;
}

.reader-toc h2 {
  margin: 0 0 1rem;
  color: var(--ink-soft);
  font-family: var(--sans);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.reader-toc a,
.dialog-toc a {
  display: flex;
  min-height: 2.75rem;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.55rem 0.75rem;
  border-left: 0.18rem solid transparent;
  color: var(--ink-soft);
  font-size: 0.9rem;
  text-decoration: none;
}

.reader-toc a:hover,
.reader-toc a[aria-current="page"],
.dialog-toc a:hover,
.dialog-toc a[aria-current="page"] {
  border-color: var(--seal);
  color: var(--ink);
  background: color-mix(in srgb, var(--seal-soft) 45%, transparent);
}

.reader-toc small,
.dialog-toc small {
  color: var(--ink-soft);
}

.reading-column {
  min-width: 0;
}

.reading-heading {
  align-items: end;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--line);
}

.passage {
  position: relative;
  display: grid;
  grid-template-columns: 3.6rem minmax(0, 1fr) 2.8rem;
  gap: clamp(0.5rem, 2vw, 1rem);
  padding-block: clamp(1.6rem, 5vw, 2.6rem);
  border-bottom: 1px solid var(--line);
  scroll-margin-top: 6rem;
}

.passage__number {
  padding-top: 0.3rem;
  color: var(--seal-dark);
  font-size: var(--support-size);
  font-variant-numeric: tabular-nums;
  font-weight: 800;
  letter-spacing: 0.04em;
}

.passage__body {
  margin: 0;
  font-family: var(--serif);
  font-size: var(--reading-size);
  line-height: var(--reading-leading);
  white-space: pre-line;
}

.passage__open {
  grid-column: 2;
  justify-self: start;
  color: var(--seal-dark);
  font-size: var(--support-size);
  font-weight: 800;
  text-underline-offset: 0.2em;
}

.passage__annotations {
  grid-column: 2;
  display: grid;
  gap: 0.55rem;
  margin-top: 0.5rem;
}

.passage__annotation {
  border: 1px solid var(--line);
  border-radius: 0.8rem;
  background: color-mix(in srgb, var(--surface) 72%, transparent);
}

.passage__annotation summary {
  padding: 0.75rem 0.9rem;
  color: var(--seal-dark);
  font-weight: 800;
  font-size: var(--support-size);
  cursor: pointer;
}

.passage__annotation[open] summary {
  border-bottom: 1px solid var(--line);
}

.passage__annotation p {
  margin: 0;
  padding: 0.9rem;
  color: var(--ink-soft);
  font-size: var(--annotation-size);
  line-height: 1.85;
}

.passage__review-meta {
  margin: 0.25rem 0 0;
  color: var(--ink-soft);
  font-size: var(--support-size);
}

.passage-view {
  padding-block: clamp(1.5rem, 4vw, 3rem) 6rem;
}

.passage-stage {
  position: relative;
  touch-action: pan-y;
}

.passage-page,
.passage-page--preview {
  width: 100%;
  transform: translate3d(0, 0, 0);
  will-change: transform;
}

.passage-page--preview {
  position: absolute;
  top: 0;
  left: 0;
  pointer-events: none;
  user-select: none;
}

.passage-page--previous {
  transform: translate3d(-100%, 0, 0);
}

.passage-page--next {
  transform: translate3d(100%, 0, 0);
}

.passage-stage.is-dragging {
  cursor: grabbing;
}

.passage-stage.is-settling .passage-page,
.passage-stage.is-settling .passage-page--preview {
  transition: transform 300ms cubic-bezier(0.22, 0.8, 0.25, 1);
}

.passage-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: clamp(1.5rem, 4vw, 3rem);
}

.passage-toolbar p {
  margin: 0;
}

.single-passage {
  display: grid;
  grid-template-columns: minmax(16rem, 28rem) minmax(0, 40rem);
  align-items: start;
  justify-content: center;
  gap: clamp(2rem, 6vw, 5rem);
}

.single-passage__figure {
  position: sticky;
  top: 6rem;
  margin: 0;
}

.single-passage__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 5;
  border: 1px solid var(--line);
  border-radius: 0.35rem;
  background: #fffaf0;
  box-shadow: 0 1.3rem 3rem rgb(45 36 27 / 0.1);
  object-fit: cover;
}

.single-passage__figure figcaption {
  margin-top: 0.7rem;
  color: var(--ink-soft);
  font-size: var(--support-size);
  line-height: 1.6;
}

.single-passage__content {
  min-width: 0;
  padding-block: clamp(0.5rem, 3vw, 2.5rem);
}

.single-passage__content h1 {
  margin: 0.35rem 0 clamp(1.5rem, 5vw, 3rem);
  font-size: clamp(2.6rem, 7vw, 5.2rem);
}

.single-passage__body {
  margin: 0;
  font-family: var(--serif);
  font-size: var(--reading-size);
  line-height: var(--reading-leading);
  white-space: pre-line;
}

.passage-categories {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.55rem;
  margin: -1.35rem 0 1.7rem;
}

.passage-categories__label {
  color: var(--ink-soft);
  font-size: var(--support-size);
  font-weight: 750;
}

.category-chip {
  display: inline-flex;
  min-height: 2.75rem;
  align-items: center;
  padding: 0.45rem 0.8rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--ink);
  background: var(--surface);
  font-size: var(--support-size);
  font-weight: 800;
  text-decoration: none;
}

.category-chip:hover,
.category-chip--primary {
  border-color: var(--seal);
  color: var(--seal-dark);
  background: color-mix(in srgb, var(--seal-soft) 42%, var(--surface));
}

.single-passage__annotations {
  margin-top: clamp(2rem, 5vw, 3.5rem);
}

.single-passage__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 2rem;
}

.passage-pagination {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  max-width: 73rem;
  margin-top: clamp(3rem, 7vw, 6rem);
}

.passage-pagination a {
  display: grid;
  gap: 0.35rem;
  min-height: 5rem;
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: 0.8rem;
  color: var(--ink);
  background: color-mix(in srgb, var(--surface) 78%, transparent);
  text-decoration: none;
}

.passage-pagination a:last-child {
  text-align: right;
}

.passage-pagination small,
.passage-gesture-hint {
  color: var(--ink-soft);
}

.passage-gesture-hint {
  max-width: 73rem;
  font-size: var(--support-size);
  text-align: center;
}

.setting-switch {
  display: flex;
  min-height: 2.75rem;
  align-items: center;
  gap: 0.75rem;
  font-weight: 700;
}

.setting-switch input {
  width: 1.2rem;
  height: 1.2rem;
  accent-color: var(--seal);
}

.field-help {
  margin: 0.35rem 0 0;
  color: var(--ink-soft);
  font-size: 0.8rem;
}

.bookmark-button {
  display: grid;
  width: 2.7rem;
  height: 2.7rem;
  place-items: center;
  border: 1px solid transparent;
  border-radius: 50%;
  color: var(--ink-soft);
  background: transparent;
  font-size: 1.25rem;
}

.bookmark-button:hover {
  border-color: var(--line);
  background: var(--surface);
}

.bookmark-button[aria-pressed="true"] {
  color: var(--seal-dark);
  background: var(--seal-soft);
}

.chapter-pagination {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  padding-top: 2.5rem;
}

.chapter-pagination a {
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--surface);
  text-decoration: none;
}

.chapter-pagination a:last-child {
  text-align: right;
}

.chapter-pagination small {
  display: block;
  color: var(--ink-soft);
}

.utility-view {
  min-height: calc(100vh - 4.4rem);
  padding-block: clamp(3.5rem, 8vw, 6rem) 8rem;
}

.utility-heading {
  max-width: 48rem;
  margin-bottom: 2.5rem;
}

.utility-heading h1 {
  margin: 0 0 0.75rem;
  font-size: clamp(2.6rem, 7vw, 5.2rem);
  letter-spacing: -0.04em;
}

.utility-heading > p:last-child,
.utility-heading > div > p:last-child {
  margin-bottom: 0;
  color: var(--ink-soft);
}

.utility-heading--split {
  display: flex;
  max-width: none;
  align-items: end;
  justify-content: space-between;
  gap: 2rem;
}

.search-form {
  display: grid;
  max-width: 48rem;
  gap: 0.55rem;
  margin-bottom: 3.2rem;
}

.search-form label,
.filter-row label {
  color: var(--ink-soft);
  font-size: 0.83rem;
  font-weight: 750;
}

.search-form__row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.65rem;
  margin-bottom: 0.7rem;
}

input,
select {
  min-height: 3rem;
  border: 1px solid var(--line);
  border-radius: 0.75rem;
  background: var(--surface-raised);
}

input {
  min-width: 0;
  padding: 0.65rem 0.85rem;
}

select {
  padding: 0.55rem 2.4rem 0.55rem 0.85rem;
}

.results-heading {
  margin-bottom: 1rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--line);
}

.results-heading h2 {
  font-size: 1.6rem;
}

.category-heading .back-link {
  margin-bottom: 2rem;
}

.category-toolbar {
  display: grid;
  grid-template-columns: auto minmax(14rem, 1fr) auto;
  align-items: end;
  gap: 1rem;
  margin: 2rem 0 1.25rem;
  padding: 1.15rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: color-mix(in srgb, var(--surface) 82%, transparent);
}

.category-toolbar > div {
  display: grid;
  gap: 0.45rem;
}

.category-toolbar label {
  font-size: var(--support-size);
  font-weight: 800;
}

.category-toolbar select {
  width: 100%;
}

.continue-card--category {
  margin: 0 0 1.5rem;
}

.category-results {
  margin-top: 1.4rem;
}

.load-more-row {
  display: flex;
  justify-content: center;
  padding: 2rem 0 1rem;
}

.result-list {
  display: grid;
  max-width: 58rem;
}

.result-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 1rem;
  padding-block: 1.25rem;
  border-bottom: 1px solid var(--line);
}

.result-card__link {
  min-width: 0;
  text-decoration: none;
}

.result-card__link:hover h3 {
  color: var(--seal-dark);
}

.result-card__meta {
  margin: 0 0 0.35rem;
  color: var(--seal-dark);
  font-size: var(--support-size);
  font-weight: 800;
  letter-spacing: 0.04em;
}

.result-card h3 {
  margin: 0 0 0.4rem;
  font-size: var(--card-size);
}

.result-card__excerpt {
  display: -webkit-box;
  overflow: hidden;
  margin: 0;
  color: var(--ink-soft);
  font-family: var(--serif);
  font-size: var(--card-size);
  line-height: 1.75;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
}

.result-card__match {
  margin: 0.45rem 0 0;
  color: var(--seal-dark);
  font-size: var(--support-size);
  font-weight: 800;
}

mark {
  padding: 0 0.08em;
  color: inherit;
  background: color-mix(in srgb, #e3ad45 45%, transparent);
}

.empty-panel {
  max-width: 44rem;
  padding: clamp(2rem, 6vw, 4rem);
  border: 1px dashed var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface);
  text-align: center;
}

.empty-panel h1,
.empty-panel h2 {
  margin: 0 0 0.8rem;
}

.empty-panel p {
  color: var(--ink-soft);
}

.filter-row {
  display: grid;
  max-width: 20rem;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.prose-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.prose-card {
  padding: clamp(1.4rem, 4vw, 2rem);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--surface);
}

.prose-card h2 {
  margin: 0 0 0.8rem;
  font-size: 1.45rem;
}

.prose-card p {
  color: var(--ink-soft);
}

.inline-status {
  font-size: 0.9rem;
}

.mobile-nav {
  display: none;
}

.app-dialog {
  width: min(calc(100% - 2rem), 34rem);
  max-height: min(80vh, 45rem);
  padding: 1.5rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  color: var(--ink);
  background: var(--surface-raised);
  box-shadow: var(--shadow);
}

.app-dialog::backdrop {
  background: rgba(24, 19, 15, 0.55);
  backdrop-filter: blur(0.2rem);
}

.app-dialog--compact {
  max-width: 28rem;
}

.app-dialog--share {
  max-width: 32rem;
}

.dialog-heading {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.dialog-heading h2,
.app-dialog--compact h2 {
  margin: 0;
  font-size: 1.65rem;
}

.dialog-close {
  border: 0;
  font-family: var(--sans);
  font-size: 1.6rem;
}

.app-dialog fieldset {
  padding: 0;
  border: 0;
  margin: 0 0 1.4rem;
}

.app-dialog legend {
  margin-bottom: 0.65rem;
  font-weight: 750;
}

.segmented {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(5rem, 1fr));
  gap: 0.35rem;
  padding: 0.3rem;
  border: 1px solid var(--line);
  border-radius: 0.85rem;
  background: var(--paper-deep);
}

.segmented button {
  min-height: 2.6rem;
  border: 0;
  border-radius: 0.6rem;
  background: transparent;
}

.segmented button[aria-pressed="true"] {
  color: var(--seal-dark);
  background: var(--surface-raised);
  box-shadow: 0 0.2rem 0.8rem rgba(65, 48, 31, 0.08);
}

.dialog-toc {
  max-height: 60vh;
  overflow-y: auto;
}

.dialog-toc--jump {
  margin-top: 1rem;
}

.dialog-empty {
  padding: 1rem;
  color: var(--ink-soft);
  text-align: center;
}

.dialog-actions {
  display: flex;
  justify-content: end;
  gap: 0.7rem;
  margin-top: 1.5rem;
}

.field-label {
  display: block;
  margin-bottom: 0.55rem;
  font-weight: 750;
}

.image-share-note {
  display: block;
  width: 100%;
  min-height: 7.5rem;
  resize: vertical;
  padding: 0.8rem 0.9rem;
  border: 1px solid var(--line);
  border-radius: 0.75rem;
  color: var(--ink);
  background: var(--paper);
  font: inherit;
  line-height: 1.65;
}

.image-share-note:focus {
  border-color: var(--seal);
  outline: 0.18rem solid color-mix(in srgb, var(--seal) 24%, transparent);
  outline-offset: 0.12rem;
}

.image-share-note[aria-invalid="true"] {
  border-color: var(--seal-dark);
}

.image-share-note-preview {
  display: grid;
  min-height: 6.5rem;
  align-items: center;
  margin-top: 1rem;
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: 0.75rem;
  background:
    linear-gradient(rgba(255, 255, 255, 0.18), rgba(255, 255, 255, 0.18)),
    var(--paper-deep);
}

.image-share-note-preview p {
  width: 100%;
  margin: 0;
  color: var(--ink);
  font-family: var(--sans);
  font-size: clamp(1.5rem, 5.5vw, 2rem);
  font-weight: 700;
  line-height: 1.45;
  text-align: left;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.image-share-note-preview p[data-empty="true"] {
  color: var(--ink-soft);
  font-family: var(--sans);
  font-size: 0.95rem;
  font-weight: 400;
  text-align: center;
}

.image-share-note-status {
  margin: 0.65rem 0 0;
  color: var(--ink-soft);
  font-size: 0.9rem;
}

.field-error {
  margin: 0.45rem 0 0;
  color: var(--seal-dark);
  font-weight: 700;
}

.image-share-link-step {
  text-align: center;
}

.image-share-link-step__title {
  margin: 0 0 0.5rem;
  color: var(--ink);
  font-family: var(--serif);
  font-size: 1.8rem;
  font-weight: 700;
}

.image-share-link-step__preview {
  margin: 1.2rem 0 0;
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: 0.75rem;
  background: var(--paper-deep);
  color: var(--ink-soft);
  line-height: 1.7;
  overflow-wrap: anywhere;
}

.image-share-link-step__preview span {
  color: var(--seal-dark);
}

@media (max-width: 32rem) {
  .app-dialog--share {
    padding: 1.1rem;
  }

  .app-dialog--share .dialog-actions {
    display: grid;
    grid-template-columns: 1fr;
  }

  .app-dialog--share .dialog-actions button {
    width: 100%;
  }
}

.update-banner {
  position: fixed;
  z-index: 50;
  right: 1rem;
  bottom: 1rem;
  width: min(calc(100% - 2rem), 28rem);
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--surface-raised);
  box-shadow: var(--shadow);
}

.update-banner p {
  margin: 0 0 0.7rem;
  font-weight: 750;
}

.update-banner > div {
  display: flex;
  gap: 0.6rem;
}

.toast {
  position: fixed;
  z-index: 100;
  left: 50%;
  bottom: 1.25rem;
  max-width: min(calc(100% - 2rem), 32rem);
  padding: 0.7rem 1rem;
  border-radius: 999px;
  color: #fff;
  background: #26211c;
  box-shadow: var(--shadow);
  font-size: 0.9rem;
  text-align: center;
  transform: translateX(-50%);
}

@media (max-width: 60rem) {
  .category-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .reader-layout {
    grid-template-columns: minmax(0, 44rem);
  }

  .reader-toc {
    display: none;
  }

  .single-passage {
    grid-template-columns: minmax(14rem, 23rem) minmax(0, 38rem);
    gap: 2rem;
  }
}

@media (max-width: 44rem) {
  :root {
    --reading-size: 1.375rem;
  }

  body {
    padding-bottom: 4.6rem;
  }

  .app-header__inner {
    min-height: 3.9rem;
  }

  .desktop-nav {
    display: none;
  }

  .settings-trigger {
    margin-left: auto;
  }

  .mobile-nav {
    position: fixed;
    z-index: 40;
    right: 0;
    bottom: 0;
    left: 0;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    min-height: 4.35rem;
    border-top: 1px solid var(--line);
    background: color-mix(in srgb, var(--paper) 94%, transparent);
    backdrop-filter: blur(1rem);
  }

  .mobile-nav a {
    display: grid;
    place-items: center;
    align-content: center;
    gap: 0.05rem;
    color: var(--ink-soft);
    font-size: 0.85rem;
    font-weight: 700;
    text-decoration: none;
  }

  .mobile-nav a span {
    font-family: var(--serif);
    font-size: 1.2rem;
  }

  .mobile-nav a[aria-current="page"] {
    color: var(--seal-dark);
    background: color-mix(in srgb, var(--seal-soft) 45%, transparent);
  }

  .home-hero::after {
    top: 3.5rem;
    right: -3rem;
    opacity: 0.7;
  }

  .book-grid,
  .prose-grid,
  .category-grid {
    grid-template-columns: 1fr;
  }

  .category-grid--compact {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .home-mode-panel .book-card {
    min-height: 13.5rem;
  }

  .category-grid:not(.category-grid--compact) .category-card {
    min-height: 13.5rem;
  }

  .section-heading,
  .reading-heading,
  .results-heading,
  .utility-heading--split {
    align-items: start;
    flex-direction: column;
  }

  .reader-hero h1 {
    font-size: clamp(2.8rem, 16vw, 4.6rem);
  }

  .reader-tools {
    display: grid;
    grid-template-columns: 1fr 1fr;
  }

  .reader-tools > * {
    justify-content: center;
  }

  .reader-tools .primary-button {
    grid-column: 1 / -1;
  }

  .book-overview {
    width: min(calc(100% - 1.25rem), var(--shell));
    grid-template-columns: 1fr;
    gap: 1.5rem;
    padding-top: 2rem;
  }

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

  .reader-layout {
    width: min(calc(100% - 1.25rem), var(--shell));
  }

  .passage {
    grid-template-columns: 2.8rem minmax(0, 1fr) 2.7rem;
  }

  .passage-view {
    padding-top: 1rem;
  }

  .single-passage {
    width: min(calc(100% - 1.25rem), var(--shell));
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .single-passage__figure {
    position: static;
    width: min(100%, 28rem);
    margin-inline: auto;
  }

  .single-passage__content {
    padding-top: 0;
  }

  .passage-pagination {
    width: min(calc(100% - 1.25rem), var(--shell));
    grid-template-columns: 1fr;
  }

  .passage-pagination a:last-child {
    text-align: left;
  }

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

  .chapter-pagination a:last-child {
    text-align: left;
  }

  .search-form__row {
    grid-template-columns: 1fr;
  }

  .result-card {
    grid-template-columns: minmax(0, 1fr) 2.8rem;
  }

  .category-toolbar {
    grid-template-columns: 1fr;
    align-items: stretch;
  }

  .category-toolbar select,
  .category-toolbar button {
    width: 100%;
  }

  .update-banner {
    bottom: 5.2rem;
  }

  .toast {
    bottom: 5.1rem;
  }
}

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

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }

  .passage-page,
  .passage-page--preview {
    will-change: auto;
  }
}

@media print {
  .app-header,
  .mobile-nav,
  .reader-tools,
  .reader-toc,
  .bookmark-button,
  .chapter-pagination {
    display: none !important;
  }

  body {
    padding: 0;
    background: #fff;
  }

  .reader-layout {
    display: block;
  }

  .single-passage {
    display: block;
  }

  .single-passage__figure,
  .passage-toolbar,
  .passage-gesture-hint,
  .single-passage__actions,
  .passage-pagination,
  .passage__open {
    display: none !important;
  }
}