:root {
  --paper: #f3ecdf;
  --card: #fffaf3;
  --ink: #2a241c;
  --muted: #6f6458;
  --line: #e4d8c6;
  --cinnabar: #9c3b2e;
  --cinnabar-dark: #7d2d23;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Source Han Serif SC", "Noto Serif SC", "Songti SC", "SimSun", serif;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }

.topbar {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 18px 6vw;
  background: #2a241c;
  color: #f6efe4;
}
.brand {
  font-size: 28px;
  letter-spacing: 0.2em;
}
.search { display: flex; flex: 1; max-width: 520px; }
.search input {
  flex: 1;
  border: 0;
  padding: 10px 14px;
  font: inherit;
  background: #fffaf3;
  color: var(--ink);
}
.search button {
  border: 0;
  padding: 0 18px;
  background: var(--cinnabar);
  color: #fff;
  font: inherit;
  cursor: pointer;
}
main { width: min(1120px, calc(100% - 32px)); margin: 28px auto 48px; }
.footer {
  padding: 24px;
  text-align: center;
  color: var(--muted);
  font-size: 14px;
}

.filters { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  display: inline-flex;
  gap: 6px;
  align-items: center;
  padding: 6px 12px;
  border: 1px solid var(--line);
  background: var(--card);
  border-radius: 999px;
  font-size: 14px;
}
.chip span { color: var(--muted); }
.chip.on { background: var(--cinnabar); color: #fff; border-color: var(--cinnabar); }
.chip.on span { color: #f6d7d1; }
.count { color: var(--muted); font-size: 14px; }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(168px, 1fr));
  gap: 22px 16px;
}
.card { display: block; }
.cover {
  background: #ddd4c4;
  aspect-ratio: 3 / 4;
  overflow: hidden;
  box-shadow: 0 8px 18px rgba(42, 36, 28, 0.12);
}
.cover img, .cover-fallback { width: 100%; height: 100%; object-fit: cover; }
.cover-fallback {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 12px;
  text-align: center;
  background: #8d6a45;
  color: #fffaf3;
}
.cover-fallback.large { min-height: 280px; }
.meta h2 {
  margin: 10px 0 4px;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.4;
}
.author, .latest, .book-line { margin: 0; color: var(--muted); font-size: 13px; }
.tags { display: flex; gap: 6px; margin: 6px 0; }
.tags span {
  font-size: 12px;
  padding: 1px 6px;
  background: #efe4d2;
}

.book {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 28px;
  margin-bottom: 36px;
}
.book-cover img, .book-cover .cover-fallback { width: 180px; }
.book h1 { margin: 8px 0; font-size: 32px; }
.intro {
  margin-top: 16px;
  line-height: 1.8;
  white-space: pre-wrap;
}
.read-btn {
  display: inline-block;
  margin-top: 14px;
  padding: 8px 16px;
  background: var(--cinnabar);
  color: #fff;
}
.read-btn:hover { background: var(--cinnabar-dark); }
.crumbs { color: var(--muted); font-size: 14px; }
.crumbs a:hover { color: var(--cinnabar); }

.catalog h2 { font-size: 20px; }
.chapter-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border-top: 1px solid var(--line);
}
.chapter-list a {
  padding: 10px 12px;
  border-bottom: 1px solid var(--line);
  font-size: 15px;
}
.chapter-list a:hover { color: var(--cinnabar); background: #fff; }

.pager { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 22px; }
.page-link, .page-gap {
  min-width: 36px;
  padding: 6px 10px;
  text-align: center;
  background: var(--card);
  border: 1px solid var(--line);
}
.page-link.current { background: var(--ink); color: #fff; border-color: var(--ink); }

.reader { max-width: 760px; margin: 0 auto; }
.reader h1 { font-size: 28px; text-align: center; }
.reader .book-line { text-align: center; margin-bottom: 18px; }
.reader-nav {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin: 18px 0;
  padding: 10px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.reader-nav a:hover, .js-catalog:hover { color: var(--cinnabar); }
.js-catalog {
  border: 0;
  padding: 0;
  background: transparent;
  color: inherit;
  font: inherit;
  cursor: pointer;
}
.disabled { color: #b3a89a; }
.content p {
  margin: 0 0 1.1em;
  font-size: 19px;
  line-height: 1.95;
  text-indent: 2em;
}
.empty { color: var(--muted); line-height: 1.8; }

.loading-mask {
  position: fixed;
  inset: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(42, 36, 28, 0.55);
}
.loading-mask[hidden] { display: none; }
.loading-card {
  min-width: 220px;
  padding: 28px 32px;
  text-align: center;
  background: var(--card);
  color: var(--ink);
  box-shadow: 0 12px 40px rgba(42, 36, 28, 0.28);
}
.loading-card p { margin: 0; letter-spacing: 0.08em; }
.spinner {
  width: 36px;
  height: 36px;
  margin: 0 auto 14px;
  border: 3px solid var(--line);
  border-top-color: var(--cinnabar);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.mobile-read-bar { display: none; }
.catalog-drawer {
  position: fixed;
  inset: 0;
  z-index: 40;
  pointer-events: none;
}
.catalog-mask {
  position: absolute;
  inset: 0;
  border: 0;
  padding: 0;
  background: rgba(42, 36, 28, 0.45);
  opacity: 0;
  transition: opacity 0.28s ease;
}
.catalog-panel {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: min(78vw, 320px);
  display: flex;
  flex-direction: column;
  background: var(--paper);
  box-shadow: 8px 0 28px rgba(42, 36, 28, 0.18);
  transform: translateX(-105%);
  transition: transform 0.32s cubic-bezier(0.22, 0.61, 0.36, 1);
}
.catalog-drawer.is-open { pointer-events: auto; }
.catalog-drawer.is-open .catalog-mask { opacity: 1; }
.catalog-drawer.is-open .catalog-panel { transform: translateX(0); }
.catalog-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px;
  border-bottom: 1px solid var(--line);
}
.catalog-close {
  border: 0;
  background: transparent;
  color: var(--muted);
  font: inherit;
  cursor: pointer;
}
.catalog-list {
  position: relative;
  flex: 1;
  overflow: auto;
}
.catalog-list a {
  display: block;
  padding: 12px 16px;
  border-bottom: 1px solid var(--line);
  font-size: 15px;
}
.catalog-list a.is-current {
  color: var(--cinnabar);
  background: #fffaf3;
  box-shadow: inset 3px 0 0 var(--cinnabar);
}
.catalog-list .empty { padding: 16px; }
.listen-drawer {
  position: fixed;
  inset: 0;
  z-index: 45;
  pointer-events: none;
}
.listen-mask {
  position: absolute;
  inset: 0;
  border: 0;
  padding: 0;
  background: rgba(42, 36, 28, 0.45);
  opacity: 0;
  transition: opacity 0.28s ease;
}
.listen-panel {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  max-height: 72vh;
  display: flex;
  flex-direction: column;
  background: var(--paper);
  border-radius: 16px 16px 0 0;
  box-shadow: 0 -8px 28px rgba(42, 36, 28, 0.18);
  transform: translateY(105%);
  transition: transform 0.34s cubic-bezier(0.22, 0.61, 0.36, 1);
}
.listen-drawer.is-open { pointer-events: auto; }
.listen-drawer.is-open .listen-mask { opacity: 1; }
.listen-drawer.is-open .listen-panel { transform: translateY(0); }
.listen-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px;
  border-bottom: 1px solid var(--line);
}
.listen-body { overflow: auto; padding: 8px 16px 24px; }
.listen-field {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 16px;
  font-size: 15px;
}
.listen-field select {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fffaf3;
  color: inherit;
  font: inherit;
}
.listen-start {
  width: 100%;
  margin-top: 18px;
  padding: 12px 14px;
  border: 0;
  border-radius: 8px;
  background: var(--cinnabar);
  color: #fffaf3;
  font: inherit;
}
.listen-status {
  min-height: 1.4em;
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 13px;
}
.tts-hl {
  background: #f6e2a2;
  color: inherit;
  border-radius: 2px;
}
.read-chrome { display: none; }
.speak-float[hidden] { display: none !important; }
body.reading.speaking .speak-float {
  display: flex;
  align-items: center;
  justify-content: center;
  position: fixed;
  left: max(10px, env(safe-area-inset-left));
  top: 50%;
  z-index: 8;
  width: 52px;
  height: 52px;
  margin: 0;
  padding: 0;
  border: 0;
  border-radius: 50%;
  transform: translateY(-50%);
  background: rgba(42, 36, 28, 0.82);
  color: #fffaf3;
  font: inherit;
  font-size: 13px;
  box-shadow: 0 6px 18px rgba(42, 36, 28, 0.28);
}
body.reading.night.speaking .speak-float {
  background: rgba(244, 239, 230, 0.92);
  color: #16130f;
}
body.reading.night {
  background: #16130f;
  color: #f4efe6;
}
body.reading.night .content,
body.reading.night .reader h1,
body.reading.night .mobile-read-bar,
body.reading.night .curl-flat,
body.reading.night .read-chrome-top,
body.reading.night .read-menu,
body.reading.night .catalog-panel,
body.reading.night .listen-panel {
  background: #16130f;
  color: #f4efe6;
}
body.reading.night .read-menu,
body.reading.night .catalog-head,
body.reading.night .listen-head,
body.reading.night .catalog-list a { border-color: #3a342c; }
body.reading.night .catalog-list a.is-current {
  background: #2a241c;
  color: #f0c2b8;
}
body.reading.night .listen-field select {
  background: #221e19;
  color: #f4efe6;
  border-color: #3a342c;
}
body.reading.night .tts-hl {
  background: #6b5420;
  color: #fff8e8;
}
.tap-zone { display: none; }
.page-probe {
  position: absolute;
  visibility: hidden;
  pointer-events: none;
  height: auto;
  left: 0;
  top: 0;
}

@media (max-width: 720px) {
  .topbar { flex-direction: column; align-items: stretch; gap: 12px; }
  .book { grid-template-columns: 120px 1fr; gap: 14px; }
  .book-cover img, .book-cover .cover-fallback { width: 120px; }
  .book h1 { font-size: 24px; }
  .chapter-list { grid-template-columns: 1fr; }
  .content p { font-size: 18px; line-height: 1.85; }

  body.reading { overflow: hidden; background: var(--paper); }
  body.reading .topbar,
  body.reading .footer,
  body.reading .crumbs,
  body.reading .book-line,
  body.reading .reader-nav { display: none; }
  body.reading main {
    width: 100%;
    height: 100dvh;
    margin: 0;
  }
  body.reading .reader {
    max-width: none;
    height: 100%;
    display: flex;
    flex-direction: column;
  }
  body.reading .mobile-read-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 16px 0;
    color: var(--muted);
    font-size: 13px;
  }
  body.reading .reader h1 {
    flex: none;
    margin: 6px 16px 0;
    font-size: 16px;
    text-align: left;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }
  body.reading .page-stage {
    position: relative;
    flex: 1;
    min-height: 0;
    margin: 12px 8px 8px;
    overflow: hidden;
    perspective: 1300px;
    perspective-origin: left center;
    touch-action: manipulation;
  }
  body.reading .page-stage.curling { overflow: visible; }
  body.reading .content { height: 100%; overflow: hidden; }
  body.reading .turn-fx {
    position: absolute;
    inset: 0;
    z-index: 1;
    pointer-events: none;
  }
  body.reading .turn-shadow {
    position: absolute;
    inset: 0;
    opacity: 0;
    pointer-events: none;
  }
  body.reading .curl-flat {
    position: absolute;
    inset: 0;
    z-index: 1;
    overflow: hidden;
    background: var(--paper);
  }
  body.reading .page-rim {
    position: absolute;
    top: -6px;
    bottom: -6px;
    width: 34px;
    z-index: 2;
    transform-origin: left center;
    background: linear-gradient(90deg, rgba(243, 236, 223, 0) 0%, rgba(255, 252, 245, 0.2) 28%, #f7f1e6 58%, #d9cbb6 82%, rgba(42, 36, 28, 0.28) 100%);
  }
  body.reading .tap-zone {
    display: block;
    position: absolute;
    top: 0;
    bottom: 0;
    width: 32%;
    border: 0;
    padding: 0;
    background: transparent;
    z-index: 2;
  }
  body.reading .tap-left { left: 0; }
  body.reading .tap-middle { left: 32%; width: 36%; }
  body.reading .tap-right { right: 0; }
  body.reading.chrome-on .read-chrome { display: block; }
  body.reading .read-chrome-top,
  body.reading .read-menu {
    position: fixed;
    left: 0;
    right: 0;
    z-index: 6;
    background: rgba(243, 236, 223, 0.96);
    color: var(--ink);
  }
  body.reading .read-chrome-top {
    top: 0;
    display: flex;
    align-items: center;
    height: 48px;
    padding: 0 6px;
  }
  body.reading .read-back {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    font-size: 30px;
    line-height: 1;
  }
  body.reading .read-menu {
    bottom: 0;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    border-top: 1px solid var(--line);
    padding: 6px 0 calc(6px + env(safe-area-inset-bottom));
  }
  body.reading .read-menu button {
    border: 0;
    background: transparent;
    color: inherit;
    font: inherit;
    font-size: 13px;
    padding: 12px 0;
  }
}