:root {
  --reader-bg: #f6f2ff;
  --reader-bg-2: #fcfbff;
  --reader-surface: rgba(255, 255, 255, 0.8);
  --reader-surface-strong: rgba(255, 255, 255, 0.94);
  --reader-line: rgba(100, 76, 153, 0.12);
  --reader-line-strong: rgba(100, 76, 153, 0.18);
  --reader-text: #1f1831;
  --reader-muted: rgba(31, 24, 49, 0.66);
  --reader-soft: rgba(31, 24, 49, 0.48);
  --reader-accent: #764df1;
  --reader-accent-2: #b88aff;
  --reader-accent-soft: rgba(118, 77, 241, 0.1);
  --reader-accent-soft-2: rgba(184, 138, 255, 0.16);
  --reader-shadow: 0 24px 70px rgba(67, 37, 127, 0.12);
  --reader-shadow-soft: 0 12px 40px rgba(67, 37, 127, 0.08);
  --reader-radius: 28px;
  --reader-radius-sm: 18px;
  --reader-width: min(1240px, calc(100vw - 24px));
  --font-ui: "Avenir Next", "Segoe UI", "Helvetica Neue", sans-serif;
  --font-serif: "Iowan Old Style", "Palatino Linotype", "Book Antiqua", Georgia, serif;
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  color-scheme: light;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--reader-text);
  background:
    radial-gradient(circle at 12% 6%, rgba(184, 138, 255, 0.18), transparent 22%),
    radial-gradient(circle at 86% 4%, rgba(118, 77, 241, 0.12), transparent 20%),
    linear-gradient(180deg, var(--reader-bg-2), var(--reader-bg));
  font-family: var(--font-serif);
  padding-bottom: env(safe-area-inset-bottom);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(86, 61, 160, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(86, 61, 160, 0.03) 1px, transparent 1px);
  background-size: 36px 36px;
  mask-image: radial-gradient(circle at center, black 38%, transparent 100%);
  opacity: 0.55;
}

a {
  color: inherit;
}

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

.page-shell {
  position: relative;
  z-index: 1;
  width: var(--reader-width);
  margin: 0 auto;
  padding: 18px 0 64px;
}

.reader-bar,
.hero-card,
.chunk-card,
.catalog-card,
.featured-panel,
.source-card,
.insight-card,
.reader-nav-panel {
  background: var(--reader-surface);
  border: 1px solid var(--reader-line);
  box-shadow: var(--reader-shadow-soft);
  backdrop-filter: blur(18px);
}

.reader-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 14px 18px;
  border-radius: var(--reader-radius-sm);
  margin-bottom: 18px;
}

.brand-lockup {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.brand-mark {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background:
    radial-gradient(circle at 30% 30%, #fff, rgba(255, 255, 255, 0) 30%),
    linear-gradient(135deg, var(--reader-accent), var(--reader-accent-2));
  box-shadow: 0 0 20px rgba(118, 77, 241, 0.4);
}

.brand-lockup strong,
.hero-card h1,
.featured-copy h1,
.catalog-card h3,
.chunk-topline h2 {
  font-family: var(--font-ui);
  letter-spacing: -0.02em;
}

.brand-lockup strong {
  display: block;
  font-size: 0.98rem;
}

.brand-lockup span {
  display: block;
  color: var(--reader-muted);
  font-size: 0.82rem;
  margin-top: 2px;
}

.ghost-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 40px;
  padding: 0 14px;
  border-radius: 999px;
  border: 1px solid var(--reader-line);
  background: rgba(255, 255, 255, 0.58);
  color: var(--reader-muted);
  text-decoration: none;
  font-family: var(--font-ui);
  font-size: 0.86rem;
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease;
}

.ghost-link:hover {
  transform: translateY(-1px);
  border-color: rgba(118, 77, 241, 0.22);
  background: rgba(255, 255, 255, 0.78);
}

.eyebrow,
.status-chip,
.catalog-status,
.chunk-kicker,
.language-label span,
.source-kicker,
.insight-kicker,
.catalog-rank {
  font-family: var(--font-ui);
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.featured-panel,
.hero-card {
  border-radius: var(--reader-radius);
  overflow: hidden;
}

.featured-panel {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(260px, 0.8fr);
  gap: 18px;
  padding: 26px;
  margin-bottom: 18px;
  background:
    radial-gradient(circle at 15% 0%, rgba(184, 138, 255, 0.18), transparent 34%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(250, 246, 255, 0.84));
}

.featured-copy h1,
.hero-card h1 {
  margin: 10px 0 12px;
  font-size: clamp(2rem, 4.8vw, 4.25rem);
  line-height: 0.96;
  letter-spacing: -0.05em;
}

.featured-copy p,
.hero-summary {
  margin: 0;
  color: var(--reader-muted);
  font-size: clamp(1rem, 1.6vw, 1.1rem);
  line-height: 1.7;
  max-width: 64ch;
}

.featured-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-top: 22px;
}

.primary-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 18px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--reader-accent), #5d36d8);
  color: #fff;
  text-decoration: none;
  font-family: var(--font-ui);
  font-weight: 600;
  box-shadow: 0 18px 42px rgba(118, 77, 241, 0.22);
}

.secondary-action {
  color: var(--reader-muted);
  font-family: var(--font-ui);
  font-size: 0.88rem;
}

.featured-side {
  display: grid;
  gap: 12px;
  align-content: start;
}

.feature-stat {
  border-radius: 20px;
  padding: 16px 18px;
  background: var(--reader-surface-strong);
  border: 1px solid var(--reader-line);
}

.feature-stat span {
  display: block;
  color: var(--reader-soft);
  font-family: var(--font-ui);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.feature-stat strong {
  display: block;
  margin-top: 8px;
  font-family: var(--font-ui);
  font-size: 1.05rem;
}

.catalog-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.catalog-card {
  display: grid;
  gap: 14px;
  padding: 18px;
  border-radius: 24px;
  text-decoration: none;
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
}

.catalog-card:hover {
  transform: translateY(-2px);
  border-color: rgba(118, 77, 241, 0.22);
  box-shadow: 0 26px 64px rgba(67, 37, 127, 0.14);
}

.catalog-card-top,
.hero-meta-row,
.toolbar,
.chunk-topline,
.reader-nav-header,
.progress-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
}

.catalog-rank {
  color: var(--reader-soft);
  font-size: 0.72rem;
}

.catalog-status,
.status-chip {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 0 10px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-size: 0.7rem;
}

.catalog-status.done,
.status-chip.done {
  color: #3e257e;
  background: rgba(184, 138, 255, 0.18);
  border-color: rgba(118, 77, 241, 0.18);
}

.catalog-status.in_progress,
.status-chip.in_progress {
  color: #5f3dbd;
  background: rgba(118, 77, 241, 0.12);
  border-color: rgba(118, 77, 241, 0.12);
}

.catalog-status.pending,
.status-chip.pending {
  color: #6d5f83;
  background: rgba(31, 24, 49, 0.05);
  border-color: rgba(31, 24, 49, 0.08);
}

.catalog-card h3 {
  margin: 0;
  font-size: 1.18rem;
  line-height: 1.25;
}

.catalog-card p {
  margin: 0;
  color: var(--reader-muted);
  line-height: 1.6;
  min-height: 3.1em;
}

.catalog-meta {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  color: var(--reader-soft);
  font-family: var(--font-ui);
  font-size: 0.82rem;
}

.hero-card {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(280px, 0.75fr);
  gap: 18px;
  padding: 24px;
  margin-bottom: 18px;
  background:
    radial-gradient(circle at 6% 8%, rgba(184, 138, 255, 0.2), transparent 24%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(250, 246, 255, 0.84));
}

.hero-meta-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 18px;
}

.hero-meta-grid div,
.insight-card,
.source-card {
  border-radius: 20px;
  border: 1px solid var(--reader-line);
  background: rgba(255, 255, 255, 0.78);
}

.hero-meta-grid div {
  padding: 14px 16px;
}

.hero-meta-grid span {
  display: block;
  color: var(--reader-soft);
  font-family: var(--font-ui);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.hero-meta-grid strong {
  display: block;
  margin-top: 7px;
  font-family: var(--font-ui);
  font-size: 1rem;
}

.toolbar {
  margin-top: 20px;
  align-items: stretch;
  gap: 14px;
}

.lang-toggle {
  display: inline-flex;
  gap: 8px;
  padding: 6px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.74);
  border: 1px solid var(--reader-line);
}

.lang-pill {
  min-height: 40px;
  padding: 0 16px;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: var(--reader-muted);
  cursor: pointer;
  font-family: var(--font-ui);
  font-size: 0.88rem;
  transition: background 180ms ease, color 180ms ease, transform 180ms ease;
}

.lang-pill.is-active {
  color: #fff;
  background: linear-gradient(135deg, var(--reader-accent), #5d36d8);
  box-shadow: 0 16px 28px rgba(118, 77, 241, 0.2);
}

.progress-summary {
  flex: 1;
  min-width: 0;
  padding: 10px 14px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.74);
  border: 1px solid var(--reader-line);
}

.progress-track {
  height: 7px;
  border-radius: 999px;
  overflow: hidden;
  background: rgba(118, 77, 241, 0.1);
}

.progress-track span {
  display: block;
  width: 0%;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--reader-accent), var(--reader-accent-2));
  transition: width 140ms linear;
}

.progress-row {
  margin-top: 10px;
  color: var(--reader-soft);
  font-family: var(--font-ui);
  font-size: 0.8rem;
}

.hero-rail {
  display: grid;
  gap: 12px;
  align-content: start;
}

.source-card {
  display: grid;
  gap: 10px;
  padding: 18px;
  text-decoration: none;
}

.source-card strong {
  font-family: var(--font-ui);
  font-size: 1.02rem;
  line-height: 1.35;
}

.source-card p,
.source-link {
  margin: 0;
  color: var(--reader-muted);
  font-family: var(--font-ui);
  font-size: 0.84rem;
  line-height: 1.55;
  word-break: break-word;
}

.insight-card {
  padding: 18px;
}

.insight-card p {
  margin: 10px 0 0;
  color: var(--reader-muted);
  line-height: 1.7;
}

.reader-grid {
  display: grid;
  grid-template-columns: minmax(240px, 0.28fr) minmax(0, 1fr);
  gap: 18px;
}

.reader-nav-panel {
  position: sticky;
  top: 18px;
  align-self: start;
  padding: 18px;
  border-radius: 22px;
}

.reader-nav-header {
  margin-bottom: 14px;
  color: var(--reader-muted);
  font-family: var(--font-ui);
  font-size: 0.8rem;
}

.reader-nav {
  display: grid;
  gap: 10px;
}

.chapter-pill {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  width: 100%;
  padding: 12px 14px;
  border: 1px solid transparent;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.74);
  color: var(--reader-muted);
  font-family: var(--font-ui);
  cursor: pointer;
  text-align: left;
  transition: transform 160ms ease, border-color 160ms ease, background 160ms ease;
}

.chapter-pill:hover {
  transform: translateY(-1px);
  border-color: rgba(118, 77, 241, 0.18);
}

.chapter-pill.is-active {
  color: var(--reader-text);
  background: rgba(118, 77, 241, 0.1);
  border-color: rgba(118, 77, 241, 0.24);
}

.chapter-pill span {
  color: var(--reader-soft);
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  font-family: var(--font-ui);
}

.chapter-pill em {
  margin-left: auto;
  font-size: 0.84rem;
  font-style: normal;
  color: var(--reader-text);
  opacity: 0.9;
  max-width: 14ch;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}

.chapter-pill.is-active em {
  color: #432296;
}

.reader-nav-panel .eyebrow {
  color: var(--reader-soft);
}

.reader-nav-header span:last-child {
  font-size: 0.82rem;
  color: var(--reader-soft);
}

.outline-card {
  margin-top: 14px;
  padding: 14px;
  border-radius: 18px;
  border: 1px solid var(--reader-line);
  background: rgba(255, 255, 255, 0.74);
}

.outline-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  color: var(--reader-soft);
  font-family: var(--font-ui);
  font-size: 0.78rem;
  margin-bottom: 10px;
}

.outline-grid {
  display: grid;
  gap: 8px;
}

.outline-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  width: 100%;
  padding: 10px 11px;
  border-radius: 14px;
  border: 1px solid transparent;
  background: rgba(250, 247, 255, 0.82);
  cursor: pointer;
  text-align: left;
  color: var(--reader-text);
  font-family: var(--font-ui);
  transition: border-color 160ms ease, background 160ms ease;
}

.outline-item:hover {
  border-color: rgba(118, 77, 241, 0.18);
}

.outline-item.is-active {
  background: rgba(118, 77, 241, 0.12);
  border-color: rgba(118, 77, 241, 0.24);
}

.outline-index {
  min-width: 2ch;
  color: var(--reader-soft);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
}

.outline-text {
  font-size: 0.82rem;
  line-height: 1.45;
}

.outline-list {
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.outline-item-bullet {
  align-items: flex-start;
}

.outline-item-bullet .outline-index {
  min-width: 1.6ch;
  font-size: 0.78rem;
  color: #6f5db5;
}

.reader-body {
  display: grid;
  gap: 14px;
}

.chunk-card {
  position: relative;
  padding: 20px;
  border-radius: 26px;
  overflow: hidden;
}

.chunk-card::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 4px;
  background: linear-gradient(180deg, var(--reader-accent), var(--reader-accent-2));
}

.chunk-topline {
  align-items: start;
  margin-bottom: 14px;
}

.chunk-kicker {
  display: inline-flex;
  color: var(--reader-soft);
  font-size: 0.72rem;
}

.chunk-topline h2 {
  margin: 7px 0 0;
  font-size: 1.08rem;
  line-height: 1.35;
}

.chunk-bodies {
  display: grid;
  gap: 14px;
}

.language-block {
  padding: 16px;
  border-radius: 20px;
  background: rgba(250, 247, 255, 0.92);
  border: 1px solid rgba(118, 77, 241, 0.12);
}

.language-label {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
  margin-bottom: 12px;
  font-family: var(--font-ui);
}

.language-label span {
  color: var(--reader-accent);
  font-size: 0.72rem;
}

.language-label em {
  color: var(--reader-soft);
  font-style: normal;
  font-size: 0.8rem;
}

.chunk-text {
  display: block;
  font-size: 1.04rem;
  line-height: 1.95;
  max-width: 76ch;
}

.article-flow {
  display: grid;
  gap: 0.72rem;
}

.article-paragraph {
  margin: 0;
  color: var(--reader-text);
  letter-spacing: 0.01em;
  text-wrap: pretty;
}

.speaker-inline {
  display: inline;
  margin-right: 0.38rem;
  color: rgba(90, 53, 191, 0.64);
  font-family: var(--font-ui);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  text-transform: none;
  vertical-align: baseline;
}

.speaker-inline::after {
  content: "·";
  margin-left: 0.3rem;
  color: rgba(90, 53, 191, 0.48);
}

.reader-empty {
  border-radius: 16px;
  padding: 14px 16px;
  color: var(--reader-muted);
  background: rgba(118, 77, 241, 0.07);
  border: 1px dashed rgba(118, 77, 241, 0.18);
  font-family: var(--font-ui);
}

.language-block[data-lang-block="zh"] .article-paragraph {
  text-wrap: pretty;
  line-height: 2.02;
}

.language-block[data-lang-block="en"] .article-paragraph {
  line-height: 1.86;
}

.ambient {
  position: fixed;
  border-radius: 50%;
  filter: blur(10px);
  pointer-events: none;
  opacity: 0.42;
}

.ambient-a {
  top: 76px;
  left: -50px;
  width: 240px;
  height: 240px;
  background: radial-gradient(circle, rgba(184, 138, 255, 0.7), transparent 70%);
}

.ambient-b {
  top: 220px;
  right: -60px;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(118, 77, 241, 0.5), transparent 72%);
}

.library-page .hero-card,
.library-page .catalog-card,
.library-page .featured-panel {
  margin-bottom: 0;
}

.library-page .catalog-grid {
  margin-top: 18px;
}

@media (max-width: 1024px) {
  .hero-card,
  .featured-panel,
  .reader-grid {
    grid-template-columns: 1fr;
  }

  .reader-nav-panel {
    position: static;
  }
}

@media (max-width: 760px) {
  .page-shell {
    width: min(100vw - 16px, 100%);
    padding-top: 12px;
  }

  .reader-bar {
    padding: 12px 14px;
  }

  .featured-panel,
  .hero-card,
  .chunk-card,
  .catalog-card,
  .reader-nav-panel {
    border-radius: 22px;
  }

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

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

  .lang-toggle {
    justify-content: center;
  }

  .hero-meta-grid {
    grid-template-columns: 1fr;
  }

  .reader-nav {
    display: flex;
    overflow-x: auto;
    gap: 8px;
    padding-bottom: 4px;
    scroll-snap-type: x proximity;
  }

  .chapter-pill {
    min-width: 132px;
    flex: 0 0 auto;
    scroll-snap-align: start;
  }

  .outline-grid {
    display: flex;
    gap: 8px;
    overflow-x: auto;
    padding-bottom: 2px;
    scroll-snap-type: x proximity;
  }

  .outline-item {
    min-width: 200px;
    flex: 0 0 auto;
    scroll-snap-align: start;
  }

  .language-label {
    flex-direction: column;
    align-items: start;
  }

  .chunk-text {
    font-size: 0.98rem;
    line-height: 1.84;
    max-width: none;
  }
}

body[data-lang="en"] .language-block[data-lang-block="zh"] {
  display: none;
}

body[data-lang="zh"] .language-block[data-lang-block="en"] {
  display: none;
}