:root {
  color-scheme: light;
  --white: #ffffff;
  --ink: #181818;
  --ink-soft: #555555;
  --ink-faint: #8a8a8a;
  --line: #e8e8e8;
  --line-strong: #cfcfcf;
  --surface-soft: #f7f7f7;
  --red: #e6162d;
  --red-dark: #b90f22;
  --red-soft: #fff1f3;
  --green: #16845b;
  --green-soft: #eef9f4;
  --font-sans: "Avenir Next", "SF Pro Display", "SF Pro Text", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-md: 1.125rem;
  --text-lg: 1.375rem;
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --page: min(calc(100% - 3rem), 74rem);
  --reading: 45rem;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --z-menu: 20;
  --z-toast: 40;
}

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

html {
  scroll-behavior: smooth;
  background: var(--white);
}

body {
  min-width: 20rem;
  margin: 0;
  background: var(--white);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: var(--text-base);
  font-kerning: normal;
  line-height: 1.6;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

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

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

button {
  border: 0;
}

a {
  color: inherit;
  text-decoration: none;
}

::selection {
  background: var(--red-soft);
  color: var(--red-dark);
}

:focus-visible {
  outline: 2px solid var(--red);
  outline-offset: 3px;
}

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

.skip-link {
  position: fixed;
  z-index: 100;
  top: var(--space-3);
  left: var(--space-3);
  padding: var(--space-3) var(--space-4);
  transform: translateY(-160%);
  background: var(--ink);
  color: var(--white);
}

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

.site-header {
  display: flex;
  width: var(--page);
  min-height: 4.75rem;
  margin: 0 auto;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
}

.brand {
  display: inline-flex;
  min-height: 2.75rem;
  align-items: center;
  gap: var(--space-3);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.brand-mark {
  display: grid;
  width: 1.75rem;
  height: 1.75rem;
  padding: 0.42rem;
  align-content: space-between;
  background: var(--red);
}

.brand-mark i {
  display: block;
  height: 1px;
  background: var(--white);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(1rem, 2.4vw, 2rem);
  color: var(--ink-soft);
  font-size: var(--text-sm);
}

.site-nav a {
  display: inline-flex;
  min-height: 2.75rem;
  align-items: center;
  transition: color 160ms ease;
}

.site-nav a:hover {
  color: var(--ink);
}

.site-nav .nav-download {
  color: var(--red);
  font-weight: 650;
}

.site-nav .nav-download span,
.site-nav .github-link span {
  margin-left: var(--space-2);
  transition: transform 180ms var(--ease);
}

.site-nav .nav-download:hover span {
  transform: translateY(0.14rem);
}

.site-nav .github-link {
  color: var(--ink);
  font-weight: 650;
}

.site-nav .github-link:hover span {
  transform: translate(0.12rem, -0.12rem);
}

.not-official {
  padding-left: clamp(1rem, 2.4vw, 2rem);
  border-left: 1px solid var(--line);
  color: var(--ink-faint);
  font-size: var(--text-xs);
}

main {
  display: block;
}

.hero {
  width: var(--page);
  margin: 0 auto;
  padding: clamp(4.5rem, 9vw, 7rem) 0 clamp(5rem, 10vw, 8rem);
}

.hero-inner {
  display: grid;
  gap: clamp(3rem, 7vw, 5.5rem);
}

.hero-topline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

.eyebrow,
.section-kicker,
.article-label,
.reader-chapter-number,
.chapter-nav-title {
  margin: 0;
  color: var(--ink-faint);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.14em;
}

.extension-status {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--ink-soft);
  font-size: var(--text-xs);
}

.extension-status i {
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 50%;
  background: var(--line-strong);
}

.extension-status.is-connected {
  color: var(--green);
}

.extension-status.is-connected i {
  background: var(--green);
  box-shadow: 0 0 0 0.25rem var(--green-soft);
}

.hero-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.88fr) minmax(25rem, 1.12fr);
  gap: clamp(3rem, 8vw, 7rem);
  align-items: start;
}

.hero-message {
  padding-top: var(--space-2);
}

.hero-title {
  max-width: 11ch;
  margin: 0;
  font-size: clamp(2.8rem, 5.3vw, 4.9rem);
  font-weight: 650;
  letter-spacing: -0.065em;
  line-height: 1.08;
}

.hero-copy {
  max-width: 36rem;
  margin: var(--space-8) 0 0;
  color: var(--ink-soft);
  font-size: var(--text-md);
  line-height: 1.75;
}

.capture-area {
  padding-top: var(--space-6);
  border-top: 2px solid var(--ink);
}

.capture-form {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: var(--space-3);
  align-items: end;
}

.field {
  display: grid;
  gap: var(--space-2);
}

.field label,
.field > span {
  color: var(--ink-soft);
  font-size: var(--text-xs);
  font-weight: 650;
}

.field input,
.field textarea,
.search-field input {
  width: 100%;
  min-height: 3.25rem;
  padding: 0 var(--space-4);
  border: 1px solid var(--line-strong);
  border-radius: 0;
  outline: none;
  background: var(--white);
  transition: border-color 160ms ease, box-shadow 160ms ease;
}

.field textarea {
  min-height: 7rem;
  padding-top: var(--space-3);
  resize: vertical;
}

.field input::placeholder,
.field textarea::placeholder,
.search-field input::placeholder {
  color: #a0a0a0;
}

.field input:focus,
.field textarea:focus,
.search-field input:focus {
  border-color: var(--ink);
  box-shadow: 0 0 0 3px var(--surface-soft);
}

.primary-button,
.secondary-button {
  display: inline-flex;
  min-height: 3.25rem;
  padding: 0 var(--space-6);
  align-items: center;
  justify-content: center;
  border-radius: 0;
  cursor: pointer;
  white-space: nowrap;
  transition: background 160ms ease, border-color 160ms ease, color 160ms ease,
    transform 180ms var(--ease);
}

.primary-button {
  background: var(--red);
  color: var(--white);
  font-weight: 650;
}

.primary-button:hover {
  background: var(--red-dark);
  transform: translateY(-1px);
}

.primary-button:disabled,
.secondary-button:disabled {
  cursor: wait;
  opacity: 0.58;
  transform: none;
}

.secondary-button {
  min-height: 2.75rem;
  padding: 0 var(--space-4);
  border: 1px solid var(--line-strong);
  background: var(--white);
  color: var(--ink);
  font-size: var(--text-sm);
  font-weight: 650;
}

.secondary-button:hover {
  border-color: var(--ink);
}

.text-button {
  display: inline-flex;
  min-height: 2.75rem;
  padding: 0;
  align-items: center;
  justify-content: center;
  background: transparent;
  color: var(--ink-soft);
  cursor: pointer;
  font-size: var(--text-sm);
  line-height: 1;
}

.text-button:hover {
  color: var(--ink);
}

.capture-note {
  display: flex;
  margin: var(--space-3) 0 var(--space-2);
  align-items: center;
  gap: var(--space-2);
  color: var(--ink-faint);
  font-size: var(--text-xs);
}

.capture-note span {
  color: var(--green);
  font-weight: 700;
}

.ocr-limit-note {
  margin: 0 0 var(--space-3);
  color: var(--ink-faint);
  font-size: var(--text-xs);
  line-height: 1.7;
}

.ocr-limit-note strong {
  margin-right: var(--space-2);
  color: var(--ink-soft);
  font-weight: 650;
}

.advanced-settings {
  color: var(--ink-soft);
  font-size: var(--text-sm);
}

.advanced-settings + .advanced-settings {
  border-top: 1px solid var(--line);
}

.advanced-settings summary {
  display: inline-flex;
  min-height: 3rem;
  align-items: center;
  gap: var(--space-2);
  cursor: pointer;
  list-style: none;
}

.advanced-settings summary::-webkit-details-marker,
.download-group summary::-webkit-details-marker {
  display: none;
}

.advanced-settings summary::before {
  color: var(--ink-faint);
  content: "＋";
}

.advanced-settings[open] summary::before {
  content: "－";
}

.advanced-grid {
  display: grid;
  margin: var(--space-3) 0;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}

.advanced-grid.is-single {
  grid-template-columns: 1fr;
}

.privacy-note,
.form-note {
  margin: 0;
  color: var(--ink-faint);
  font-size: var(--text-xs);
  line-height: 1.7;
}

.setting-toggle {
  display: grid;
  margin-top: var(--space-5);
  padding: var(--space-5) 0;
  grid-template-columns: auto 1fr;
  gap: var(--space-3);
  align-items: start;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  cursor: pointer;
}

.setting-toggle input {
  width: 1.1rem;
  height: 1.1rem;
  margin: 0.18rem 0 0;
  accent-color: var(--red);
}

.setting-toggle strong,
.setting-toggle small {
  display: block;
}

.setting-toggle strong {
  color: var(--ink);
  font-size: var(--text-sm);
}

.setting-toggle small {
  margin-top: var(--space-1);
  color: var(--ink-faint);
  font-size: var(--text-xs);
  line-height: 1.65;
}

.settings-footer {
  display: flex;
  margin-top: var(--space-5);
  align-items: end;
  justify-content: space-between;
  gap: var(--space-6);
}

.settings-footer .privacy-note {
  max-width: 38rem;
}

.settings-footer .secondary-button {
  flex: 0 0 auto;
}

.form-error {
  margin: var(--space-3) 0 0;
  color: var(--red-dark);
  font-size: var(--text-sm);
}

.job-progress {
  display: grid;
  margin-top: var(--space-6);
  padding: var(--space-5);
  grid-template-columns: auto 1fr;
  gap: var(--space-4);
  border: 1px solid var(--line);
  background: var(--surface-soft);
}

.job-progress[hidden] {
  display: none;
}

.progress-mark {
  position: relative;
  width: 1.3rem;
  height: 1.3rem;
  margin-top: 0.15rem;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
}

.job-progress.is-running .progress-mark::after {
  position: absolute;
  inset: 0.25rem;
  border-radius: 50%;
  background: var(--red);
  content: "";
  animation: breathe 1.4s ease-in-out infinite;
}

.job-progress.is-completed .progress-mark {
  border-color: var(--green);
  background: var(--green);
}

.job-progress.is-completed .progress-mark::after {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  color: var(--white);
  content: "✓";
  font-size: 0.72rem;
}

.job-progress.is-failed .progress-mark {
  border-color: var(--red);
  background: var(--red-soft);
}

.progress-copy strong,
.progress-copy span {
  display: block;
}

.progress-copy strong {
  font-size: var(--text-sm);
}

.progress-copy span {
  margin-top: var(--space-1);
  color: var(--ink-soft);
  font-size: var(--text-xs);
}

.archive-section,
.guide-section {
  width: var(--page);
  margin: 0 auto;
  padding: clamp(5rem, 10vw, 8rem) 0;
  border-top: 1px solid var(--line);
}

.section-heading {
  display: grid;
  margin-bottom: var(--space-12);
  grid-template-columns: 1fr auto;
  gap: var(--space-6);
  align-items: end;
}

.section-kicker {
  margin-bottom: var(--space-3);
  color: var(--red);
}

.section-title {
  margin: 0;
  font-size: clamp(2rem, 3.5vw, 3.35rem);
  font-weight: 650;
  letter-spacing: -0.05em;
  line-height: 1.15;
}

.archive-count {
  color: var(--ink-faint);
  font-size: var(--text-sm);
  font-variant-numeric: tabular-nums;
}

.archive-tools {
  display: flex;
  margin-bottom: var(--space-8);
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
}

.backup-actions {
  display: flex;
  gap: var(--space-5);
}

.file-button {
  position: relative;
  display: inline-flex;
  align-items: center;
  cursor: pointer;
}

.file-button input {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  opacity: 0;
}

.search-field {
  display: flex;
  width: min(100%, 22rem);
  gap: var(--space-2);
}

.search-field input {
  min-height: 2.75rem;
}

.search-field button {
  flex: 0 0 auto;
  padding: 0 var(--space-3);
  background: var(--ink);
  color: var(--white);
  cursor: pointer;
  font-size: var(--text-sm);
}

.archive-list {
  border-top: 1px solid var(--ink);
}

.archive-item {
  display: grid;
  min-height: 9rem;
  grid-template-columns: 3rem minmax(0, 1fr) 2.75rem;
  gap: clamp(1rem, 3vw, 2.5rem);
  align-items: center;
  border-bottom: 1px solid var(--line);
  transition: border-color 160ms ease;
}

.archive-item:hover {
  border-color: var(--ink);
}

.archive-index {
  align-self: start;
  padding-top: var(--space-7, 1.75rem);
  color: var(--ink-faint);
  font-size: var(--text-xs);
  font-variant-numeric: tabular-nums;
}

.archive-main {
  padding: var(--space-6) 0;
}

.archive-title {
  margin: 0;
  font-size: clamp(1.25rem, 2.2vw, 1.75rem);
  font-weight: 620;
  letter-spacing: -0.025em;
  line-height: 1.35;
}

.archive-item:hover .archive-title {
  color: var(--red);
}

.archive-meta {
  display: flex;
  margin-top: var(--space-3);
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-5);
  color: var(--ink-faint);
  font-size: var(--text-xs);
}

.archive-description {
  max-width: 60rem;
  margin: var(--space-3) 0 0;
  color: var(--ink-soft);
  font-size: var(--text-sm);
}

.archive-arrow {
  display: grid;
  width: 2.5rem;
  height: 2.5rem;
  place-items: center;
  border: 1px solid var(--line);
  color: var(--ink-faint);
  transition: background 160ms ease, border-color 160ms ease, color 160ms ease,
    transform 180ms var(--ease);
}

.archive-item:hover .archive-arrow {
  transform: translateX(0.18rem);
  border-color: var(--ink);
  background: var(--ink);
  color: var(--white);
}

.error-label {
  color: var(--red);
}

.empty-state {
  min-height: 15rem;
  padding: var(--space-12) 0;
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--line);
}

.empty-state strong {
  font-size: var(--text-lg);
  font-weight: 620;
}

.empty-state p {
  max-width: 32rem;
  margin: var(--space-3) 0 0;
  color: var(--ink-soft);
}

.pagination {
  display: flex;
  margin-top: var(--space-8);
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-5);
  color: var(--ink-faint);
  font-size: var(--text-sm);
}

.pagination button,
.chapter-pager button {
  min-height: 2.75rem;
  background: transparent;
  color: var(--ink-soft);
  cursor: pointer;
}

.pagination button:hover,
.chapter-pager button:hover {
  color: var(--ink);
}

.pagination button:disabled,
.chapter-pager button:disabled {
  cursor: default;
  opacity: 0.3;
}

.guide-section {
  display: grid;
  grid-template-columns: minmax(15rem, 0.72fr) minmax(0, 1.28fr);
  gap: clamp(4rem, 10vw, 9rem);
}

.guide-intro {
  align-self: start;
}

.guide-intro > p:last-child {
  max-width: 28rem;
  margin: var(--space-6) 0 0;
  color: var(--ink-soft);
}

.guide-steps {
  counter-reset: guide;
  border-top: 1px solid var(--ink);
}

.guide-step {
  position: relative;
  display: grid;
  min-height: 9rem;
  padding: var(--space-6) 0 var(--space-6) 4rem;
  align-items: start;
  border-bottom: 1px solid var(--line);
  counter-increment: guide;
}

.guide-step::before {
  position: absolute;
  top: 1.6rem;
  left: 0;
  color: var(--ink-faint);
  content: "0" counter(guide);
  font-size: var(--text-xs);
  font-variant-numeric: tabular-nums;
}

.guide-step h3 {
  margin: 0;
  font-size: var(--text-md);
  font-weight: 650;
  letter-spacing: -0.015em;
}

.guide-step p {
  max-width: 38rem;
  margin: var(--space-2) 0 0;
  color: var(--ink-soft);
  font-size: var(--text-sm);
}

.guide-step code {
  padding: 0.08rem 0.28rem;
  background: var(--surface-soft);
  font-family: var(--font-sans);
  font-size: 0.92em;
}

.guide-download {
  display: inline-flex;
  min-height: 2.75rem;
  margin-top: var(--space-4);
  align-items: center;
  gap: var(--space-3);
  color: var(--red);
  font-size: var(--text-sm);
  font-weight: 650;
}

.guide-download span {
  transition: transform 180ms var(--ease);
}

.guide-download:hover span {
  transform: translateY(0.15rem);
}

.site-footer {
  display: flex;
  width: var(--page);
  min-height: 8rem;
  margin: 0 auto;
  padding: var(--space-6) 0;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-8);
  border-top: 1px solid var(--ink);
  color: var(--ink-faint);
  font-size: var(--text-xs);
}

.site-footer p {
  margin: 0;
}

.site-footer strong {
  color: var(--ink);
}

.loading-page {
  display: grid;
  width: var(--page);
  min-height: 68vh;
  margin: 0 auto;
  place-items: center;
}

.loading-line {
  width: min(22rem, 70vw);
  height: 1px;
  overflow: hidden;
  background: var(--line);
}

.loading-line::after {
  display: block;
  width: 35%;
  height: 100%;
  transform: translateX(-100%);
  background: var(--red);
  content: "";
  animation: loading-line 1.2s var(--ease) infinite;
}

.article-shell {
  width: var(--page);
  margin: 0 auto;
  padding: var(--space-8) 0 var(--space-24);
}

.article-back {
  display: inline-flex;
  min-height: 2.75rem;
  align-items: center;
  color: var(--ink-soft);
  font-size: var(--text-sm);
}

.article-back:hover {
  color: var(--ink);
}

.article-header {
  display: grid;
  padding: clamp(3rem, 8vw, 6rem) 0 var(--space-12);
  grid-template-columns: minmax(0, 1fr) minmax(15rem, 0.34fr);
  gap: clamp(3rem, 8vw, 7rem);
  align-items: end;
  border-bottom: 1px solid var(--ink);
}

.article-label,
.reader-chapter-number {
  color: var(--red);
}

.article-heading {
  max-width: 18ch;
  margin: var(--space-4) 0 0;
  font-size: clamp(2.5rem, 5vw, 4.75rem);
  font-weight: 650;
  letter-spacing: -0.06em;
  line-height: 1.08;
  overflow-wrap: anywhere;
}

.article-byline {
  margin: var(--space-5) 0 0;
  color: var(--ink-soft);
  font-size: var(--text-md);
}

.article-facts {
  display: grid;
  margin: 0;
  gap: var(--space-3);
}

.article-facts div {
  display: grid;
  padding-bottom: var(--space-3);
  grid-template-columns: 4.5rem 1fr;
  gap: var(--space-3);
  border-bottom: 1px solid var(--line);
}

.article-facts dt {
  color: var(--ink-faint);
  font-size: var(--text-xs);
}

.article-facts dd {
  margin: 0;
  font-size: var(--text-sm);
}

.article-facts a:hover {
  color: var(--red);
}

.article-actions {
  display: flex;
  padding: var(--space-4) 0;
  flex-wrap: wrap;
  gap: var(--space-2);
  align-items: center;
  border-bottom: 1px solid var(--line);
}

.article-actions > button,
.article-actions > .download-group > summary {
  min-height: 2.75rem;
  line-height: 1;
}

.article-actions > .download-group {
  display: flex;
  align-items: stretch;
}

.article-actions > .download-group > summary {
  width: 100%;
}

.article-actions .danger-button {
  margin-left: auto;
  color: var(--ink-faint);
}

.article-actions .danger-button:hover {
  color: var(--red);
}

.article-ocr-limit {
  max-width: 48rem;
  margin-top: var(--space-3);
}

.download-group {
  position: relative;
}

.download-group summary {
  list-style: none;
  cursor: pointer;
}

.download-menu {
  position: absolute;
  z-index: var(--z-menu);
  top: calc(100% + 0.5rem);
  left: 0;
  display: grid;
  min-width: 11rem;
  padding: var(--space-2);
  border: 1px solid var(--line);
  background: var(--white);
  box-shadow: 0 1rem 3rem rgb(0 0 0 / 0.1);
}

.download-menu button,
.download-menu a {
  display: flex;
  min-height: 2.75rem;
  padding: 0 var(--space-3);
  align-items: center;
  background: transparent;
  color: var(--ink);
  text-align: left;
  cursor: pointer;
}

.download-menu button:hover,
.download-menu a:hover {
  background: var(--surface-soft);
}

.metadata-editor .download-menu {
  width: min(24rem, calc(100vw - 2rem));
  gap: var(--space-3);
}

.article-description {
  margin-top: var(--space-8);
}

.reader-layout {
  display: grid;
  padding-top: var(--space-16);
  grid-template-columns: minmax(12rem, 0.28fr) minmax(0, 1fr);
  gap: clamp(3rem, 9vw, 8rem);
}

.chapter-nav {
  position: sticky;
  top: var(--space-6);
  max-height: calc(100vh - 3rem);
  align-self: start;
  overflow-y: auto;
}

.chapter-nav-title {
  margin-bottom: var(--space-4);
}

.chapter-list {
  display: grid;
  border-top: 1px solid var(--line);
}

.chapter-button {
  display: grid;
  min-height: 3.75rem;
  padding: var(--space-3) 0;
  grid-template-columns: 2rem 1fr;
  gap: var(--space-2);
  align-items: start;
  border-bottom: 1px solid var(--line);
  background: transparent;
  color: var(--ink-soft);
  text-align: left;
  cursor: pointer;
}

.chapter-button span:first-child {
  color: var(--ink-faint);
  font-size: var(--text-xs);
  font-variant-numeric: tabular-nums;
}

.chapter-button:hover,
.chapter-button.is-active {
  color: var(--ink);
}

.chapter-button.is-active {
  font-weight: 650;
}

.reader {
  width: min(100%, var(--reading));
  min-height: 35rem;
}

.reader-title {
  margin: var(--space-3) 0 var(--space-10);
  font-size: clamp(1.9rem, 3.4vw, 3rem);
  font-weight: 650;
  letter-spacing: -0.04em;
  line-height: 1.2;
}

.reader-content {
  font-size: 1.0625rem;
  line-height: 1.95;
}

.reader-content p {
  margin: 0 0 1.55em;
}

.reader-content .image-marker {
  display: block;
  padding: var(--space-6);
  border: 1px solid var(--line);
  color: var(--ink-faint);
  font-size: var(--text-sm);
  text-align: center;
}

.archive-image {
  margin: var(--space-12) 0;
}

.archive-image img {
  display: block;
  width: auto;
  max-width: 100%;
  max-height: 45rem;
  margin: 0 auto;
  object-fit: contain;
  background: var(--surface-soft);
}

.archive-image figcaption {
  display: flex;
  margin-top: var(--space-3);
  justify-content: space-between;
  gap: var(--space-4);
  color: var(--ink-faint);
  font-size: var(--text-xs);
}

.archive-image figcaption button {
  padding: 0;
  border: 0;
  background: transparent;
  color: inherit;
  font: inherit;
  cursor: pointer;
}

.archive-image figcaption button:hover {
  color: var(--red);
}

.archive-image.has-image-error img {
  min-height: 8rem;
  opacity: 0.35;
}

.image-ocr {
  margin-top: var(--space-6);
  padding: var(--space-5) var(--space-6);
  border-left: 2px solid var(--red);
  background: var(--surface-soft);
}

.image-ocr span {
  display: block;
  margin-bottom: var(--space-2);
  color: var(--red);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.08em;
}

.reader-content .image-ocr p {
  margin: 0;
  font-size: var(--text-sm);
  line-height: 1.85;
}

.reader-content .image-ocr-note {
  margin: var(--space-4) 0 0;
  color: var(--ink-faint);
  font-size: var(--text-xs);
  line-height: 1.65;
}

.chapter-pager {
  display: flex;
  margin-top: var(--space-16);
  padding-top: var(--space-6);
  justify-content: space-between;
  border-top: 1px solid var(--line);
}

.reader-error {
  padding: var(--space-8) 0;
  color: var(--red-dark);
}

.toast-region {
  position: fixed;
  z-index: var(--z-toast);
  right: max(1rem, env(safe-area-inset-right));
  bottom: max(1rem, env(safe-area-inset-bottom));
  display: grid;
  width: min(24rem, calc(100% - 2rem));
  gap: var(--space-3);
}

.toast {
  display: flex;
  padding: var(--space-4);
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  background: var(--ink);
  color: var(--white);
  box-shadow: 0 1rem 3rem rgb(0 0 0 / 0.16);
  animation: toast-in 260ms var(--ease) both;
}

.toast button {
  min-height: 2.75rem;
  padding: 0 var(--space-3);
  background: var(--white);
  color: var(--ink);
  cursor: pointer;
}

@keyframes breathe {
  50% {
    transform: scale(0.62);
    opacity: 0.5;
  }
}

@keyframes loading-line {
  to {
    transform: translateX(380%);
  }
}

@keyframes toast-in {
  from {
    transform: translateY(0.75rem);
    opacity: 0;
  }
}

@media (max-width: 64rem) {
  .hero-layout {
    grid-template-columns: minmax(0, 0.8fr) minmax(22rem, 1.2fr);
    gap: var(--space-12);
  }

  .not-official {
    display: none;
  }

  .article-header {
    gap: var(--space-12);
  }
}

@media (max-width: 48rem) {
  :root {
    --page: min(calc(100% - 2rem), 74rem);
  }

  .site-header {
    min-height: 4.25rem;
  }

  .site-nav {
    gap: var(--space-3);
  }

  .site-nav a[href="#archive"],
  .site-nav a[href="#guide"] {
    display: none;
  }

  .site-nav .nav-download,
  .site-nav .github-link {
    font-size: var(--text-xs);
  }

  .hero {
    padding: var(--space-12) 0 var(--space-16);
  }

  .hero-inner {
    gap: var(--space-10);
  }

  .hero-layout {
    grid-template-columns: 1fr;
    gap: var(--space-12);
  }

  .hero-title {
    max-width: 12ch;
    font-size: clamp(2.55rem, 12vw, 4rem);
  }

  .hero-copy {
    margin-top: var(--space-5);
    font-size: var(--text-base);
  }

  .capture-area {
    padding-top: var(--space-5);
  }

  .capture-form {
    grid-template-columns: 1fr;
  }

  .primary-button {
    width: 100%;
  }

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

  .settings-footer {
    align-items: stretch;
    flex-direction: column;
  }

  .archive-section,
  .guide-section {
    padding: var(--space-16) 0;
  }

  .section-heading {
    grid-template-columns: 1fr;
    gap: var(--space-3);
  }

  .archive-tools {
    align-items: stretch;
    flex-direction: column-reverse;
  }

  .search-field {
    width: 100%;
  }

  .archive-item {
    grid-template-columns: 2rem minmax(0, 1fr) 2.25rem;
    gap: var(--space-3);
  }

  .archive-index {
    padding-top: var(--space-7, 1.75rem);
  }

  .archive-arrow {
    width: 2.25rem;
    height: 2.25rem;
  }

  .guide-section {
    grid-template-columns: 1fr;
    gap: var(--space-10);
  }

  .guide-step {
    padding-left: 3rem;
  }

  .site-footer {
    min-height: auto;
    flex-direction: column;
    gap: var(--space-3);
  }

  .article-shell {
    padding-top: var(--space-5);
  }

  .article-header {
    padding-top: var(--space-8);
    grid-template-columns: 1fr;
    gap: var(--space-10);
  }

  .article-actions .danger-button {
    margin-left: 0;
  }

  .reader-layout {
    padding-top: var(--space-10);
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }

  .chapter-nav {
    position: static;
    max-height: none;
  }

  .chapter-list {
    display: flex;
    overflow-x: auto;
    scroll-snap-type: x proximity;
  }

  .chapter-button {
    min-width: 11rem;
    scroll-snap-align: start;
    border-right: 1px solid var(--line);
  }

  .reader-title {
    margin-bottom: var(--space-8);
  }
}

@media (max-width: 26rem) {
  .brand {
    gap: var(--space-2);
  }

  .brand-mark {
    width: 1.6rem;
    height: 1.6rem;
  }

  .site-nav .nav-download {
    font-size: 0;
  }

  .site-nav .nav-download::before {
    content: "扩展";
    font-size: var(--text-xs);
  }

  .site-nav .nav-download span {
    font-size: var(--text-xs);
  }

  .hero-topline {
    align-items: flex-start;
    flex-direction: column;
  }

  .article-actions {
    align-items: stretch;
  }

  .article-actions > *:not(.danger-button) {
    flex: 1 1 auto;
  }
}

@media (pointer: coarse) {
  .site-nav a,
  .chapter-button,
  .text-button {
    min-height: 3rem;
  }
}

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