* { box-sizing: border-box; }

:root {
  --safe: min(1180px, calc(100vw - 48px));
  --paper: #f2eadf;
  --muted: rgba(255,255,255,.58);
  --line: rgba(255,255,255,.11);
  --library-card-max: 226px;
  --library-grid-column-gap: 38px;
  --library-grid-row-gap: 62px;
}

html { background:#071019; color-scheme:dark; scroll-behavior:smooth; }
body {
  margin:0;
  min-height:100%;
  overflow-x:hidden;
  background:#071019;
  color:#fff;
  font-family:Inter,ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif;
}
a { color:inherit; }
button,input { font:inherit; }
.safe { width:var(--safe); margin-inline:auto; }
.sr-only { position:absolute; width:1px; height:1px; padding:0; margin:-1px; overflow:hidden; clip:rect(0,0,0,0); white-space:nowrap; border:0; }

.library-bg {
  position:fixed;
  inset:-4%;
  z-index:0;
  background:url("https://assets.wenhaozhang.cn/loneeast/HTML-SC/BJ/Library.png?v=20260916-v192") center/cover no-repeat;
  filter:blur(1px) saturate(.82) brightness(.78);
  transform:scale(1.05);
}
.library-bg-shade {
  position:fixed;
  inset:0;
  z-index:1;
  pointer-events:none;
  background:
    linear-gradient(180deg,rgba(2,8,13,.32),rgba(2,8,13,.56) 38%,rgba(2,8,13,.82) 88%,#030a0f 100%),
    radial-gradient(circle at 80% 13%,rgba(190,145,96,.13),transparent 29%);
}

/* Header visuals are owned by site-header.css. */


.library-page > .header,.library-main,.library-page > .site-footer-v179{position:relative;}
.library-page > .header{z-index:120;}
.library-main{z-index:2;padding:36px 0 92px;}
.library-page > .site-footer-v179{z-index:2;}
.book-page > .header,.book-main,.book-page > .site-footer-v179{position:relative;}
.book-page > .header{z-index:120;}
.book-main{z-index:2;}
.book-page > .site-footer-v179{z-index:2;}
.library-glass-shell {
  width:min(1300px,calc(100vw - 34px));
  margin-inline:auto;
  padding:0 clamp(26px,3.3vw,48px) 68px;
  border:1px solid rgba(255,255,255,.115);
  border-radius:30px;
  background:
    linear-gradient(145deg,rgba(255,255,255,.050),rgba(255,255,255,.010) 42%,rgba(3,13,20,.12)),
    rgba(5,16,24,.20);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.08),0 34px 100px rgba(0,0,0,.20);
  backdrop-filter:blur(17px) saturate(1.05);
  -webkit-backdrop-filter:blur(17px) saturate(1.05);
}
.library-glass-shell > .safe { width:100%; margin-inline:0; }

.library-hero {
  min-height:470px;
  display:grid;
  grid-template-columns:minmax(0,.86fr) minmax(430px,1fr);
  gap:clamp(32px,5vw,76px);
  align-items:center;
  padding-top:48px;
  padding-bottom:44px;
  border-bottom:1px solid var(--line);
}
.library-hero-copy { align-self:center; padding-bottom:8px; }

.library-hero h1 {
  margin:0;
  color:var(--paper);
  font:400 clamp(58px,5.25vw,84px)/.90 Georgia,"Times New Roman",serif;
  letter-spacing:-.055em;
}
.library-intro {
  max-width:620px;
  margin:22px 0 0;
  color:rgba(255,255,255,.67);
  font:400 clamp(17px,1.35vw,21px)/1.55 Georgia,"Times New Roman",serif;
}

.library-hero-visual {
  position:relative;
  min-height:420px;
  min-width:0;
}
.library-hero-books {
  position:absolute;
  inset:10px 0 22px;
}
.library-hero-book {
  position:absolute;
  display:block;
  aspect-ratio:2/3;
  transform-origin:50% 100%;
  transition:transform .42s cubic-bezier(.16,1,.3,1),filter .35s ease;
  outline:none;
}
.library-hero-book img {
  display:block;
  width:100%;
  height:100%;
  object-fit:contain;
  object-position:center bottom;
  filter:drop-shadow(0 24px 30px rgba(0,0,0,.38));
}
.library-hero-book--primary { width:44%; left:28%; bottom:0; z-index:3; }
.library-hero-book--left { width:32%; left:1%; bottom:12%; z-index:2; transform:rotate(-4.2deg); }
.library-hero-book--right { width:30%; right:0; bottom:18%; z-index:1; transform:rotate(4.4deg); }
.library-hero-book--primary:hover,.library-hero-book--primary:focus-visible { transform:translateY(-8px) scale(1.018); }
.library-hero-book--left:hover,.library-hero-book--left:focus-visible { transform:translateY(-8px) rotate(-2.6deg) scale(1.018); }
.library-hero-book--right:hover,.library-hero-book--right:focus-visible { transform:translateY(-8px) rotate(2.8deg) scale(1.018); }
.library-hero-book:focus-visible::after { content:""; position:absolute; inset:-8px; border:1px solid rgba(255,255,255,.62); border-radius:5px; }
.library-hero-book.is-cover-missing { border:1px solid rgba(255,255,255,.08); background:rgba(255,255,255,.02); }
.library-hero-book.is-cover-missing::before { content:"Cover unavailable"; position:absolute; inset:0; display:grid; place-items:center; color:rgba(255,255,255,.28); font-size:10px; }

.library-return {
  width:min(100%,960px);
  margin-inline:auto;
  display:grid;
  grid-template-columns:190px minmax(0,1fr);
  gap:clamp(26px,3.2vw,46px);
  align-items:center;
  padding-top:30px;
  padding-bottom:30px;
  border-bottom:1px solid var(--line);
}
.library-return-heading h2 {
  margin:0;
  color:rgba(255,255,255,.88);
  font:400 clamp(26px,2.2vw,34px)/1.05 Georgia,"Times New Roman",serif;
  letter-spacing:-.025em;
}
.continue-card {
  min-width:0;
  display:grid;
  grid-template-columns:64px minmax(0,1fr) auto;
  gap:18px;
  align-items:center;
  padding:0;
}
.continue-visual { width:64px; height:88px; display:grid; place-items:center; }
.continue-cover { display:block; max-width:100%; max-height:100%; object-fit:contain; filter:drop-shadow(0 13px 16px rgba(0,0,0,.30)); }
.continue-copy { min-width:0; }
.continue-copy h3 {
  margin:0;
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
  color:var(--paper);
  font:400 clamp(20px,1.8vw,28px)/1.12 Georgia,"Times New Roman",serif;
}
.continue-author { margin:7px 0 0; color:rgba(255,255,255,.50); font-size:12px; line-height:1.35; }
.continue-action {
  min-width:108px;
  min-height:42px;
  padding:0 16px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:12px;
  border:1px solid rgba(255,255,255,.13);
  border-radius:999px;
  background:rgba(255,255,255,.035);
  color:#fff;
  text-decoration:none;
  font-size:11px;
  font-weight:650;
  letter-spacing:.04em;
  transition:transform .3s cubic-bezier(.16,1,.3,1),background .25s ease,border-color .25s ease;
}

.continue-action:hover,.continue-action:focus-visible { transform:translateY(-2px); background:rgba(255,255,255,.075); border-color:rgba(255,255,255,.20); }
.continue-card.is-cover-missing .continue-visual { border:1px solid rgba(255,255,255,.06); }

.library-section { padding-top:52px; }
.library-collection { padding-bottom:8px; }
.collection-head {
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(220px,310px);
  align-items:end;
  gap:36px;
  margin-bottom:24px;
}
.collection-head h2 {
  margin:0;
  color:rgba(255,255,255,.92);
  font:400 clamp(30px,3.1vw,44px)/1.04 Georgia,"Times New Roman",serif;
  letter-spacing:-.03em;
}
.library-search {
  height:44px;
  display:flex;
  align-items:center;
  gap:10px;
  border-bottom:1px solid rgba(255,255,255,.16);
  color:rgba(255,255,255,.55);
}
.library-search:focus-within { border-bottom-color:rgba(255,255,255,.42); }
.library-search svg { width:16px; height:16px; fill:none; stroke:currentColor; stroke-width:1.5; flex:0 0 auto; }
.library-search input { width:100%; min-width:0; border:0; outline:0; background:transparent; color:#fff; font-size:13px; }
.library-search input::placeholder { color:rgba(255,255,255,.34); }
.library-filters {
  display:flex;
  gap:clamp(24px,3.6vw,52px);
  margin-bottom:38px;
  border-bottom:1px solid rgba(255,255,255,.10);
}
.library-filters button {
  position:relative;
  min-height:48px;
  padding:0 0 15px;
  border:0;
  background:transparent;
  color:rgba(255,255,255,.47);
  font-size:clamp(13px,1.15vw,15px);
  font-weight:560;
  line-height:1.25;
  cursor:pointer;
  white-space:nowrap;
  transition:color .2s ease;
}
.library-filters button::after { content:""; position:absolute; left:0; right:0; bottom:-1px; height:1px; background:transparent; transform:scaleX(.45); transition:background .2s ease,transform .28s cubic-bezier(.16,1,.3,1); }
.library-filters button:hover { color:rgba(255,255,255,.76); }
.library-filters button.is-active { color:#fff; }
.library-filters button.is-active::after { background:rgba(255,255,255,.78); transform:scaleX(1); }

.library-book-grid,.collection-grid {
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  column-gap:var(--library-grid-column-gap);
  row-gap:var(--library-grid-row-gap);
  align-items:end;
}
.library-book-card { position:relative; min-width:0; width:100%; cursor:pointer; }
.library-book-link { position:absolute; inset:0; z-index:4; border-radius:6px; }
.library-book-link:focus-visible { outline:1px solid rgba(255,255,255,.72); outline-offset:8px; }
.library-book-stage {
  width:min(100%,var(--library-card-max));
  aspect-ratio:2/3;
  margin-inline:auto;
  display:grid;
  place-items:end center;
  overflow:visible;
}
.library-book-cover {
  display:block;
  width:100%;
  height:100%;
  object-fit:contain;
  object-position:center bottom;
  transform-origin:50% 100%;
  filter:drop-shadow(0 18px 22px rgba(0,0,0,.30));
  transition:transform .34s cubic-bezier(.16,1,.3,1),filter .34s ease;
}
.library-book-card:hover .library-book-cover,.library-book-card:focus-within .library-book-cover { transform:translateY(-6px) scale(1.014); filter:drop-shadow(0 24px 28px rgba(0,0,0,.35)); }
.library-book-card.is-cover-missing .library-book-stage { min-height:220px; place-items:center; border:1px solid rgba(255,255,255,.055); }
.library-book-card.is-cover-missing .library-book-stage::after { content:"Cover unavailable"; color:rgba(255,255,255,.28); font-size:10px; letter-spacing:.04em; }
.library-empty { padding:62px 0; text-align:center; color:rgba(255,255,255,.45); font-size:13px; }

@media (max-width:1050px) {
  :root { --library-card-max:220px; --library-grid-column-gap:27px; --library-grid-row-gap:56px; }
  .library-hero { grid-template-columns:minmax(0,.9fr) minmax(350px,1fr); min-height:520px; gap:28px; }
  .library-hero-visual { min-height:390px; }
  .library-book-grid,.collection-grid { grid-template-columns:repeat(3,minmax(0,1fr)); }
  .library-return { width:min(100%,900px); grid-template-columns:170px minmax(0,1fr); gap:28px; }
}

@media (max-width:800px) {
  :root { --safe:min(100% - 32px,620px); --library-card-max:100%; --library-grid-column-gap:16px; --library-grid-row-gap:42px; }
  .library-main { padding-top:10px; padding-bottom:72px; }
  .library-glass-shell { width:calc(100vw - 16px); padding:0 16px 54px; border-radius:24px; backdrop-filter:blur(10px) saturate(1.03); -webkit-backdrop-filter:blur(10px) saturate(1.03); }
  .library-hero { min-height:0; grid-template-columns:1fr; gap:18px; padding-top:48px; padding-bottom:42px; }
  .library-hero h1 { font-size:clamp(46px,13vw,62px); }
  .library-intro { margin-top:20px; font-size:18px; }
  .library-hero-visual { min-height:318px; margin-top:8px; }
  .library-hero-books { inset:0 0 20px; }
  .library-hero-book--primary { width:45%; left:28%; }
  .library-hero-book--left { width:33%; left:1%; bottom:10%; }
  .library-hero-book--right { width:31%; right:0; bottom:16%; }
  .library-return { width:100%; grid-template-columns:1fr; gap:18px; padding-top:24px; padding-bottom:24px; }
  .library-return {
  width:min(100%,960px);
  margin-inline:auto;
  display:grid;
  grid-template-columns:190px minmax(0,1fr);
  gap:clamp(26px,3.2vw,46px);
  align-items:center;
  padding-top:30px;
  padding-bottom:30px;
  border-bottom:1px solid var(--line);
}
.library-return-heading h2 { font-size:31px; }
  .continue-card { grid-template-columns:62px minmax(0,1fr) auto; gap:14px; }
  .continue-visual { width:62px; height:86px; }
  .continue-copy h3 { font-size:22px; }
  .continue-author { font-size:10.5px; }
  .continue-action { min-width:78px; min-height:40px; padding:0 13px; }
  .library-section { padding-top:52px; }
  .collection-head { grid-template-columns:1fr; gap:20px; margin-bottom:28px; }
  .collection-head h2 { font-size:36px; }
  .library-search { width:100%; }
  .library-filters { overflow-x:auto; gap:26px; margin-inline:-16px; padding-inline:16px; margin-bottom:38px; scrollbar-width:none; }
  .library-filters::-webkit-scrollbar { display:none; }
  .library-filters button { flex:0 0 auto; min-height:46px; font-size:13px; }
  .library-book-grid,.collection-grid { grid-template-columns:repeat(2,minmax(0,1fr)); }
  .library-book-stage { width:100%; aspect-ratio:2/3; }
  .whatsapp-float { z-index:4000; }
}

@media (max-width:480px) {
  :root { --library-grid-column-gap:12px; --library-grid-row-gap:36px; }
  .library-hero-visual { min-height:276px; }
  .continue-card { grid-template-columns:56px minmax(0,1fr); }
  .continue-visual { width:56px; height:78px; }
  .continue-action { grid-column:1/-1; justify-self:start; min-width:104px; }
  .continue-copy h3 { white-space:normal; display:-webkit-box; -webkit-line-clamp:2; -webkit-box-orient:vertical; }
}

@media (prefers-reduced-motion:reduce) {
  html { scroll-behavior:auto; }
  .library-book-cover,.library-hero-book,.continue-action,.library-filters button::after { transition:none; }
}

/* V199 — Library controls share one horizontal visual language. */
.collection-head{
  grid-template-columns:1fr;
  margin-bottom:20px;
}
.library-controls-row{
  display:flex;
  align-items:center;
  gap:12px;
  width:100%;
  margin-bottom:38px;
}
.library-controls-row .library-filters{
  display:flex;
  align-items:center!important;
  gap:10px!important;
  flex:1 1 auto;
  min-width:0;
  margin:0!important;
  padding:0!important;
  border-bottom:0!important;
  overflow:visible;
}
.library-controls-row .library-search{
  box-sizing:border-box;
  flex:0 0 min(260px,24vw);
  width:auto;
  height:40px;
  min-height:40px;
  padding:0 15px;
  display:flex;
  align-items:center;
  justify-content:center;
  gap:9px;
  border:1px solid var(--site-action-border,rgba(255,255,255,.20));
  border-radius:999px;
  background:var(--site-action-bg,rgba(255,255,255,.045));
  color:var(--site-action-color,rgba(255,255,255,.86));
  box-shadow:none;
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  transition:background .2s ease,border-color .2s ease,color .2s ease;
}
.library-controls-row .library-search:hover,
.library-controls-row .library-search:focus-within{
  background:var(--site-action-bg-hover,rgba(255,255,255,.09));
  border-color:var(--site-action-border-hover,rgba(255,255,255,.42));
  color:#fff;
}
.library-controls-row .library-search svg{
  width:17px;
  height:17px;
  flex:0 0 17px;
}
.library-controls-row .library-search input{
  width:100%;
  min-width:0;
  border:0;
  outline:0;
  background:transparent;
  color:#fff;
  font-size:18px;
  font-weight:400;
  line-height:1;
  text-align:center;
}
.library-controls-row .library-search input::placeholder{color:rgba(255,255,255,.48)}
@media(max-width:1050px){
  .library-controls-row{flex-wrap:wrap;}
  .library-controls-row .library-search{flex:1 1 100%;max-width:360px;}
}
@media(max-width:800px){
  .library-controls-row{gap:12px;margin-bottom:32px;}
  .library-controls-row .library-filters{
    overflow-x:auto;
    margin-inline:0!important;
    padding-inline:0!important;
    scrollbar-width:none;
  }
  .library-controls-row .library-filters::-webkit-scrollbar{display:none}
  .library-controls-row .library-search{max-width:none;width:100%;}
  .library-controls-row .library-search input{font-size:16px;}
}


/* V202 — Library calibration for the wider About-based site shell. */
@media(min-width:1051px){
  .library-hero{grid-template-columns:minmax(0,.95fr) minmax(520px,1.05fr);}
  .library-hero-visual{height:430px;min-height:430px;overflow:hidden;}
  .library-hero-books{inset:18px 0 20px;overflow:hidden;}
  .library-hero-book--primary{
    width:min(38%,258px);left:50%;bottom:0;transform:translateX(-50%);
  }
  .library-hero-book--primary:hover,.library-hero-book--primary:focus-visible{
    transform:translateX(-50%) translateY(-8px) scale(1.018);
  }
  .library-hero-book--left{width:min(27%,190px);left:8%;bottom:9%;}
  .library-hero-book--right{width:min(26%,182px);right:8%;bottom:13%;}

  .library-return{
    width:100%;
    grid-template-columns:max-content minmax(0,1fr);
    gap:clamp(34px,3vw,54px);
  }
  .library-return-heading h2{white-space:nowrap;}
  .library-book-grid,.collection-grid{grid-template-columns:repeat(5,minmax(0,1fr));}
}
@media(min-width:1051px) and (max-width:1320px){
  .library-book-grid,.collection-grid{grid-template-columns:repeat(4,minmax(0,1fr));}
}