/* ============================================================
   B·S·CATALOG — 书香质感 (Bookish) Redesign
   Palette: indigo ink · warm brown · ivory paper · vermilion
   ============================================================ */

:root {
  /* Brand & accents */
  --ink:         #1E3A5F;   /* 墨色靛蓝 — primary brand */
  --ink-deep:    #16293F;   /* darker shade for button bottom edge */
  --ink-soft:    #2E517C;
  --brown:       #C49A6C;   /* 暖棕 — warm accent (spines, prices) */
  --brown-deep:  #A47E52;
  --vermilion:   #D04848;   /* 朱砂红 — CTA / promo emphasis */
  --vermilion-deep: #B23A3A;

  /* Neutrals */
  --paper:       #F8F5F0;   /* 象牙米白 — page background */
  --card:        #FFFFFF;
  --text:        #1A1A2E;   /* 深墨色 — body */
  --text-2:      #4A4A5A;   /* 炭灰 — secondary */
  --text-3:      #9A9AAA;   /* 浅灰 — helper */
  --line:        #E7E0D6;   /* warm border */
  --line-soft:   #EFEAE1;

  /* Tag tints */
  --tag-cat-bg:   #EDE3D3;  --tag-cat-fg:   #7A5A3A;
  --tag-lang-bg:  #DCE7EF;  --tag-lang-fg:  #2C5E7A;
  --tag-page-bg:  #EDE6D2;  --tag-page-fg:  #8A6A2A;

  /* Type scale — 7 steps, ~1.2× from 12 → 36 */
  --fs-1: 12px;
  --fs-2: 14px;
  --fs-3: 17px;
  --fs-4: 21px;
  --fs-5: 25px;
  --fs-6: 30px;
  --fs-7: 36px;

  --serif: 'Merriweather', Georgia, 'Times New Roman', serif;
  --sans:  'Inter', system-ui, -apple-system, "Segoe UI", sans-serif;

  --gap: 24px;          /* 8px-grid: card gap 16→24 */
  --radius: 8px;
  --radius-lg: 14px;
  --ease: cubic-bezier(.2,.6,.2,1);
  --pad-x: clamp(20px, 6vw, 84px);  /* desktop ~6% safe margin */
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }

body {
  font-family: var(--sans);
  background: var(--paper);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  padding-bottom: env(safe-area-inset-bottom);
  line-height: 1.5;
}

a { color: inherit; text-decoration: none; }
h1, h2, h3 { font-family: var(--serif); }

/* ---------- Scrollbar ---------- */
::-webkit-scrollbar { width: 9px; height: 9px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--text-3); border-radius: 6px; }
::-webkit-scrollbar-thumb:hover { background: var(--ink-soft); }
html { scrollbar-width: thin; scrollbar-color: var(--text-3) transparent; }

/* ============================================================
   Scroll progress bar
   ============================================================ */
.scroll-progress {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: transparent;
  z-index: 100;
  pointer-events: none;
}
.scroll-progress span {
  display: block;
  height: 100%;
  width: 100%;
  background: linear-gradient(90deg, var(--brown), var(--vermilion));
  transform: scaleX(0);
  transform-origin: 0 50%;
  transition: transform .08s linear;
}

/* ============================================================
   Floating glass nav
   ============================================================ */
.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(248, 245, 240, 0.82);
  backdrop-filter: saturate(150%) blur(14px);
  -webkit-backdrop-filter: saturate(150%) blur(14px);
  border-bottom: 1px solid var(--line);
  transition: box-shadow .25s var(--ease), background .25s var(--ease);
}
.topbar.shrunk { box-shadow: 0 4px 20px rgba(30,42,60,0.08); background: rgba(248,245,240,0.94); }
.topbar-inner {
  max-width: 1480px;
  margin: 0 auto;
  padding: 14px var(--pad-x);
  min-height: 60px;
  display: flex;
  align-items: center;
  gap: 24px;
  transition: padding .25s var(--ease), min-height .25s var(--ease);
}
.topbar.shrunk .topbar-inner { padding-top: 10px; padding-bottom: 10px; min-height: 52px; }

.brand {
  font-family: var(--serif);
  font-weight: 900;
  font-size: 19px;
  letter-spacing: 0.14em;
  color: var(--ink);
  display: inline-flex;
  align-items: baseline;
  white-space: nowrap;
  transition: font-size .25s var(--ease);
}
.topbar.shrunk .brand { font-size: 16px; }
.brand .dot { color: var(--vermilion); font-weight: 700; padding: 0 1px; }

.topbar-meta { display: flex; align-items: center; margin-left: auto; }
.count {
  font-size: var(--fs-1);
  font-weight: 500;
  letter-spacing: 0.16em;
  color: var(--text-3);
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}
.count #countNum { color: var(--ink); font-weight: 700; }

/* search in nav */
.search-wrap { position: relative; flex: 1 1 auto; min-width: 180px; max-width: 560px; }
.nav-search { transition: max-width .25s var(--ease); }
.topbar.shrunk .nav-search { max-width: 460px; }
.search-icon {
  position: absolute;
  left: 14px; top: 50%;
  transform: translateY(-50%);
  width: 16px; height: 16px;
  fill: none;
  stroke: var(--text-3);
  stroke-width: 2;
  stroke-linecap: round;
  pointer-events: none;
}
.search-input {
  width: 100%;
  border: 1px solid var(--line);
  border-bottom: 2px solid var(--line);
  background: var(--card);
  color: var(--text);
  font-family: var(--sans);
  font-size: var(--fs-2);
  font-weight: 400;
  padding: 10px 14px 10px 38px;
  border-radius: var(--radius);
  outline: none;
  transition: border-color .3s var(--ease), box-shadow .3s var(--ease);
}
.search-input::placeholder { color: var(--text-3); font-weight: 300; }
.search-input:focus {
  border-color: var(--ink);
  border-bottom-color: var(--ink);
  box-shadow: 0 4px 16px rgba(30,42,60,0.08);
}

/* ============================================================
   Hero
   ============================================================ */
.hero {
  max-width: 1480px;
  margin: 0 auto;
  padding: 48px var(--pad-x) 8px;
}
.hero-inner {
  display: grid;
  grid-template-columns: 45% 55%;
  gap: 32px;
  align-items: center;
}
.hero-kicker {
  font-size: var(--fs-1);
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--brown-deep);
  margin: 0 0 14px;
}
.hero-title {
  font-family: var(--serif);
  font-weight: 900;
  font-size: clamp(28px, 4vw, 46px);
  line-height: 1.12;
  color: var(--ink);
  margin: 0 0 18px;
  letter-spacing: -0.01em;
}
.hero-desc {
  font-size: var(--fs-3);
  line-height: 1.7;
  color: var(--text-2);
  margin: 0 0 26px;
  max-width: 46ch;
}
.hero-actions { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }

/* hero stacked book covers */
.hero-visual {
  position: relative;
  height: 320px;
  display: flex;
  justify-content: center;
  align-items: flex-end;
}
.hero-book {
  position: absolute;
  bottom: 0;
  width: 150px;
  height: 220px;
  background-size: cover;
  background-position: center top;
  background-color: var(--ink);
  border-radius: 4px 8px 8px 4px;
  box-shadow:
    inset 6px 0 12px rgba(0,0,0,0.28),
    inset -2px 0 4px rgba(255,255,255,0.18),
    0 18px 32px rgba(30,42,60,0.22);
  transform-origin: bottom center;
}
.hero-book.b1 { left: 18%;  transform: rotate(-9deg) translateY(6px); z-index: 1; }
.hero-book.b2 { left: 50%;  transform: translateX(-50%); z-index: 3; box-shadow: inset 6px 0 12px rgba(0,0,0,0.28), inset -2px 0 4px rgba(255,255,255,0.18), 0 24px 44px rgba(30,42,60,0.30); }
.hero-book.b3 { right: 18%; transform: rotate(9deg) translateY(6px); z-index: 1; }

/* new arrivals spine rail */
.new-rail { margin-top: 44px; }
.new-rail-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px dashed var(--line);
}
.new-rail-title {
  font-family: var(--serif);
  font-size: var(--fs-3);
  font-weight: 700;
  color: var(--ink);
  letter-spacing: 0.01em;
}
.new-rail-hint {
  font-size: var(--fs-1);
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-3);
}
.new-rail-track {
  display: flex;
  gap: 12px;
  overflow-x: auto;
  padding: 8px 2px 18px;
  scroll-snap-type: x proximity;
}
.spine {
  flex: 0 0 auto;
  width: 50px;
  height: 168px;
  background:
    linear-gradient(90deg, rgba(255,255,255,0.28) 0 4px, transparent 4px 7px),
    var(--spine, var(--ink));
  border-radius: 3px 5px 5px 3px;
  box-shadow: inset 5px 0 10px rgba(0,0,0,0.30), 0 6px 14px rgba(30,42,60,0.16);
  display: flex;
  align-items: flex-end;
  justify-content: center;
  padding: 12px 4px;
  scroll-snap-align: start;
  transition: transform .2s var(--ease), box-shadow .2s var(--ease);
}
.spine span {
  writing-mode: vertical-rl;
  transform: rotate(180deg);
  font-family: var(--serif);
  font-weight: 700;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: rgba(255,255,255,0.94);
  text-shadow: 0 1px 2px rgba(0,0,0,0.35);
  white-space: nowrap;
  overflow: hidden;
  max-height: 100%;
}
.spine:hover {
  transform: translateY(-8px);
  box-shadow: inset 5px 0 10px rgba(0,0,0,0.30), 0 14px 22px rgba(30,42,60,0.24);
}

/* ============================================================
   Controls (filters + sort)
   ============================================================ */
.controls {
  position: sticky;
  top: 60px;
  z-index: 40;
  background: var(--paper);
  border-bottom: 1px solid var(--line-soft);
  transition: top .25s var(--ease);
}
.topbar.shrunk ~ .controls { top: 52px; }
.controls-inner {
  max-width: 1480px;
  margin: 0 auto;
  padding: 14px var(--pad-x);
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  justify-content: space-between;
}
.filters { display: flex; gap: 10px; flex-wrap: wrap; }

.filter { position: relative; }
.filter-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--card);
  border: 1px solid var(--line);
  border-bottom: 2px solid var(--line);
  color: var(--text);
  font-family: var(--sans);
  font-size: var(--fs-2);
  font-weight: 400;
  padding: 8px 12px;
  border-radius: var(--radius);
  cursor: pointer;
  transition: border-color .15s, color .15s, background .15s;
  white-space: nowrap;
}
.filter-btn:hover { border-color: var(--ink-soft); }
.filter.open .filter-btn { border-color: var(--ink); }
.filter-label {
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-3);
}
.filter-val { font-weight: 600; color: var(--text); }
.filter.has-active .filter-val { color: var(--vermilion); }
.caret {
  width: 0; height: 0;
  border-left: 3px solid transparent;
  border-right: 3px solid transparent;
  border-top: 4px solid var(--text-3);
  transition: transform .2s var(--ease);
}
.filter.open .caret { transform: rotate(180deg); }

.filter-menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 210px;
  max-height: 360px;
  overflow-y: auto;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 12px 32px rgba(30,42,60,0.14);
  padding: 6px 0;
  z-index: 60;
  opacity: 0;
  transform: translateY(-4px);
  pointer-events: none;
  transition: opacity .15s var(--ease), transform .15s var(--ease);
}
.filter.open .filter-menu { opacity: 1; transform: translateY(0); pointer-events: auto; }
.filter-option {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 14px;
  font-size: var(--fs-2);
  font-weight: 400;
  color: var(--text-2);
  cursor: pointer;
  transition: background .12s, color .12s;
}
.filter-option:hover { background: var(--paper); color: var(--text); }
.filter-option.active { color: var(--vermilion); }
.filter-option .check {
  width: 16px; height: 16px;
  border: 1.5px solid var(--line);
  border-radius: 50%;                 /* round checkbox per plan */
  flex-shrink: 0;
  position: relative;
  transition: border-color .15s, background .15s;
}
.filter-option.active .check { background: var(--vermilion); border-color: var(--vermilion); }
.filter-option.active .check::after {
  content: "";
  position: absolute;
  left: 5px; top: 2px;
  width: 4px; height: 8px;
  border: solid #fff;
  border-width: 0 1.5px 1.5px 0;
  transform: rotate(45deg);
}
.filter-option .opt-count {
  margin-left: auto;
  font-size: var(--fs-1);
  font-weight: 300;
  color: var(--text-3);
  font-variant-numeric: tabular-nums;
}

/* ============================================================
   Buttons — three-tier system
   ============================================================ */
.btn {
  font-family: var(--sans);
  font-size: var(--fs-1);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border-radius: var(--radius);
  cursor: pointer;
  border: 0;
  transition: transform .12s var(--ease), box-shadow .15s var(--ease), background .15s, color .15s, border-color .15s;
  white-space: nowrap;
}
.btn:active { transform: translateY(2px); }
.btn-primary {
  background: var(--ink);
  color: #fff;
  box-shadow: 0 3px 0 var(--ink-deep);
  padding: 12px 22px;
}
.btn-primary:active { box-shadow: 0 1px 0 var(--ink-deep); }
.btn-secondary {
  background: var(--card);
  color: var(--ink);
  border: 1px solid var(--line);
  border-bottom: 2px solid var(--line);
  padding: 9px 16px;
}
.btn-secondary:hover { border-color: var(--ink-soft); }
.btn-text {
  background: transparent;
  color: var(--ink);
  padding: 10px 6px;
  text-transform: none;
  letter-spacing: 0.02em;
  font-size: var(--fs-2);
  font-weight: 500;
}
.btn-text:hover { color: var(--vermilion); }
.clear-all-btn { font-size: var(--fs-1); }

/* ============================================================
   Status bar
   ============================================================ */
.status-bar {
  max-width: 1480px;
  margin: 0 auto;
  padding: 20px var(--pad-x) 8px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  font-size: var(--fs-1);
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-3);
  font-variant-numeric: tabular-nums;
}

/* ============================================================
   Grid & Book cards (book-spine style)
   ============================================================ */
.grid {
  max-width: 1480px;
  margin: 0 auto;
  padding: 4px var(--pad-x) 24px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--gap);
  transition: opacity .2s var(--ease);
}
.grid.fading { opacity: 0; }

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-left: 3px solid var(--ink);          /* book spine */
  border-radius: var(--radius) var(--radius) 6px 6px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  position: relative;
  cursor: pointer;
  opacity: 0;
  animation: cardIn .25s var(--ease) forwards;
  transition: border-color .2s var(--ease), box-shadow .2s var(--ease), transform .2s var(--ease);
}
@keyframes cardIn { to { opacity: 1; } }
.card:hover {
  transform: translateX(3px);
  border-color: var(--ink-soft);
  box-shadow: 0 10px 26px rgba(30,42,60,0.12);
}
.card.highlight { border-color: var(--ink); box-shadow: 0 0 0 2px rgba(30,58,95,0.12); }
.card.expanded { border-color: var(--ink); grid-column: span 2; }
.card.expanded.full-row { grid-column: 1 / -1; }

.thumb-wrap {
  position: relative;
  width: 100%;
  aspect-ratio: 3 / 4;
  background: var(--line-soft);
  overflow: hidden;
}
.thumb-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  opacity: 0;
  filter: blur(12px);
  transform: scale(1.04);
  transition: opacity .4s var(--ease), filter .5s var(--ease), transform .5s var(--ease);
}
.thumb-wrap img.loaded { opacity: 1; filter: blur(0); transform: scale(1); }
.thumb-wrap::after {                 /* top highlight = physical-book sheen */
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(160deg, rgba(255,255,255,0.22), transparent 40%);
  pointer-events: none;
}
.thumb-wrap .skeleton {
  position: absolute; inset: 0;
  background: linear-gradient(90deg, #EDE7DD 25%, #F6F2EC 50%, #EDE7DD 75%);
  background-size: 200% 100%;
  animation: shimmer 1.4s infinite linear;
}
@keyframes shimmer { from { background-position: 200% 0; } to { background-position: -200% 0; } }
.thumb-fallback {
  position: absolute; inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--serif);
  font-size: 34px;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: rgba(255,255,255,0.92);
}

/* awards ribbon badge */
.awards-dot {
  position: absolute;
  top: 10px; right: 10px;
  width: 22px; height: 22px;
  border-radius: 4px 4px 4px 0;
  background: var(--vermilion);
  color: #fff;
  font-size: 12px;
  line-height: 22px;
  text-align: center;
  box-shadow: 0 0 0 0 rgba(208,72,72,0.55);
  animation: pulse 2s infinite;
  z-index: 3;
}
.awards-dot::before { content: "★"; }
@keyframes pulse {
  0%   { box-shadow: 0 0 0 0 rgba(208,72,72,0.5); }
  70%  { box-shadow: 0 0 0 9px rgba(208,72,72,0); }
  100% { box-shadow: 0 0 0 0 rgba(208,72,72,0); }
}

/* expand hint arrow */
.thumb-arrow {
  position: absolute;
  bottom: 10px; right: 10px;
  width: 26px; height: 26px;
  background: rgba(30,58,95,0.82);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  opacity: 0;
  transform: translateX(4px);
  transition: opacity .2s var(--ease), transform .2s var(--ease);
  z-index: 2;
}
.card:hover .thumb-arrow { opacity: 1; transform: translateX(0); }

.info { padding: 12px 14px 14px; display: flex; flex-direction: column; gap: 5px; }
.title-row { display: flex; flex-direction: column; gap: 2px; }
.info .title {
  font-family: var(--serif);
  font-size: var(--fs-2);
  font-weight: 700;
  line-height: 1.3;
  color: var(--text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.info .author {
  font-size: var(--fs-1);
  font-weight: 400;
  color: var(--text-3);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Tags — bookmark / pill / ribbon shapes */
.tags { display: flex; gap: 5px; flex-wrap: wrap; margin-top: 4px; }
.tag {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 3px 7px;
  border-radius: 4px;
  line-height: 1.4;
  font-variant-numeric: tabular-nums;
}
.tag-cat {
  background: var(--tag-cat-bg);
  color: var(--tag-cat-fg);
  /* bookmark: pointed top */
  clip-path: polygon(0 5px, 50% 0, 100% 5px, 100% 100%, 0 100%);
  padding-top: 6px;
}
.tag-lang { background: var(--tag-lang-bg); color: var(--tag-lang-fg); }
.tag-page { background: var(--tag-page-bg); color: var(--tag-page-fg); }
.meta-line {
  font-size: 10px;
  font-weight: 400;
  letter-spacing: 0.06em;
  color: var(--text-3);
  margin-top: 4px;
  text-transform: uppercase;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* external link icon */
.ext-link {
  position: absolute;
  bottom: 10px; right: 10px;
  width: 26px; height: 26px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  color: var(--text-3);
  background: rgba(255,255,255,0.9);
  border-radius: 50%;
  opacity: 0;
  transition: opacity .2s var(--ease), color .15s;
  z-index: 4;
}
.card:hover .ext-link { opacity: 1; }
.ext-link:hover { color: var(--vermilion); }

/* ---------- Accordion expand panel ---------- */
.expand-panel {
  max-height: 0;
  overflow: hidden;
  transition: max-height .3s var(--ease);
  border-top: 1px solid transparent;
}
.card.expanded .expand-panel { border-top: 1px solid var(--line); max-height: 640px; }
.expand-inner {
  padding: 16px 18px 18px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  opacity: 0;
  transform: translateY(-6px);
  transition: opacity .25s var(--ease) .05s, transform .25s var(--ease) .05s;
}
.card.expanded .expand-inner { opacity: 1; transform: translateY(0); }

.section-label {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: 4px;
}
.desc-text { font-size: var(--fs-2); font-weight: 400; line-height: 1.7; color: var(--text-2); white-space: pre-line; }
.desc-text .desc-h { font-weight: 700; color: var(--text); }
.awards-text { font-size: var(--fs-2); font-weight: 400; line-height: 1.6; color: var(--text-2); }
.author-intro {
  font-size: var(--fs-2);
  font-weight: 400;
  line-height: 1.7;
  color: var(--text-2);
  border-left: 3px solid var(--brown);
  padding-left: 12px;
}
.expand-meta-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px 16px; font-size: var(--fs-2); color: var(--text-2); }
.expand-meta-grid .k {
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.10em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: 2px;
}

/* ============================================================
   Loading / empty
   ============================================================ */
.sentinel { height: 1px; }
.loading {
  max-width: 1480px;
  margin: 0 auto;
  padding: 18px var(--pad-x) 40px;
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: var(--fs-1);
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-3);
}
/* open-book loading animation */
.book-loader {
  width: 26px; height: 18px;
  position: relative;
  flex-shrink: 0;
  transform-style: preserve-3d;
  animation: bookFlip 1.4s var(--ease) infinite;
}
.book-loader::before, .book-loader::after {
  content: "";
  position: absolute;
  top: 0; bottom: 0;
  width: 50%;
  background: var(--ink);
  border-radius: 2px;
}
.book-loader::before { left: 0; transform-origin: right; background: var(--ink); transform: perspective(40px) rotateY(20deg); }
.book-loader::after  { right: 0; transform-origin: left;  background: var(--brown); transform: perspective(40px) rotateY(-20deg); }
@keyframes bookFlip { 0%,100% { transform: rotateY(-12deg); } 50% { transform: rotateY(12deg); } }
.loading-bar {
  flex: 1; height: 2px; background: var(--line); position: relative; overflow: hidden; border-radius: 2px;
}
.loading-bar::after {
  content: "";
  position: absolute; inset: 0;
  width: 30%;
  background: linear-gradient(90deg, var(--brown), var(--vermilion));
  animation: slide 1.1s var(--ease) infinite;
}
@keyframes slide { 0% { left: -30%; } 100% { left: 100%; } }

.empty {
  max-width: 1480px;
  margin: 0 auto;
  padding: 80px var(--pad-x) 120px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}
.empty-mark { font-family: var(--serif); font-size: 36px; font-weight: 300; color: var(--text-3); }
.empty-text { font-size: var(--fs-3); font-weight: 400; color: var(--text-2); margin: 0; }

/* ============================================================
   Footer — sectioned layout
   ============================================================ */
.footer {
  border-top: 1px solid var(--line);
  background: var(--card);
  margin-top: 48px;
}
.footer-inner {
  max-width: 1480px;
  margin: 0 auto;
  padding: 48px var(--pad-x) 40px;
  display: grid;
  grid-template-columns: 1.4fr 1fr 1.2fr;
  gap: 40px;
  align-items: start;
}
.footer-logo {
  font-family: var(--serif);
  font-weight: 900;
  font-size: 18px;
  letter-spacing: 0.12em;
  color: var(--ink);
  margin-bottom: 12px;
}
.footer-logo .dot { color: var(--vermilion); }
.footer-tag { font-size: var(--fs-2); color: var(--text-2); line-height: 1.6; margin: 0; max-width: 38ch; }
.footer-nav { display: flex; flex-direction: column; gap: 10px; }
.footer-col-title {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: 4px;
}
.footer-nav a {
  font-size: var(--fs-2);
  font-weight: 500;
  color: var(--text-2);
  width: fit-content;
  border-bottom: 1px solid transparent;
  padding-bottom: 1px;
  transition: color .15s, border-color .15s;
}
.footer-nav a:hover { color: var(--vermilion); border-bottom-color: var(--vermilion); }
.footer-subscribe { display: flex; flex-direction: column; }
.footer-sub-note { font-size: var(--fs-1); color: var(--text-3); margin: 0 0 12px; line-height: 1.5; }
.subscribe-form { display: flex; gap: 8px; flex-wrap: wrap; }
.subscribe-input {
  flex: 1 1 140px;
  min-width: 0;
  border: 1px solid var(--line);
  border-bottom: 2px solid var(--line);
  background: var(--paper);
  color: var(--text);
  font-family: var(--sans);
  font-size: var(--fs-2);
  padding: 10px 12px;
  border-radius: var(--radius);
  outline: none;
  transition: border-color .3s var(--ease);
}
.subscribe-input::placeholder { color: var(--text-3); }
.subscribe-input:focus { border-color: var(--ink); border-bottom-color: var(--ink); }
.subscribe-btn { padding: 10px 18px; }
.footer-base {
  border-top: 1px dashed var(--line);
  max-width: 1480px;
  margin: 0 auto;
  padding: 18px var(--pad-x) 36px;
  font-size: var(--fs-1);
  color: var(--text-3);
  letter-spacing: 0.04em;
}

/* ============================================================
   Awards tooltip
   ============================================================ */
.awards-tooltip {
  position: fixed;
  z-index: 110;
  background: var(--ink);
  color: #fff;
  font-size: var(--fs-2);
  font-weight: 400;
  line-height: 1.5;
  padding: 10px 12px;
  border-radius: var(--radius);
  max-width: 280px;
  box-shadow: 0 10px 28px rgba(30,42,60,0.24);
  pointer-events: none;
}

/* ============================================================
   Mobile bottom toolbar
   ============================================================ */
.mobile-toolbar {
  display: none;
  position: fixed;
  bottom: 0; left: 0; right: 0;
  z-index: 45;
  background: rgba(255,255,255,0.96);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-top: 1px solid var(--line);
  padding: 6px 8px calc(6px + env(safe-area-inset-bottom));
  justify-content: space-around;
}
.mobile-toolbar-btn {
  flex: 1;
  background: transparent;
  border: 0;
  color: var(--text-2);
  font-family: var(--sans);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.04em;
  padding: 8px 4px;
  min-height: 48px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  cursor: pointer;
  border-radius: var(--radius);
  transition: background .12s, color .12s, transform .12s;
}
.mobile-toolbar-btn:active { background: var(--paper); transform: scale(0.97); }
.mt-icon { font-size: 16px; line-height: 1; }

.sheet-overlay {
  position: fixed; inset: 0;
  background: rgba(30,42,60,0.34);
  z-index: 60;
  opacity: 0;
  transition: opacity .2s var(--ease);
}
.sheet-overlay.show { opacity: 1; }
.bottom-sheet {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  z-index: 70;
  background: var(--card);
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  box-shadow: 0 -10px 30px rgba(30,42,60,0.16);
  padding: 8px 18px calc(24px + env(safe-area-inset-bottom));
  max-height: 72vh;
  overflow-y: auto;
  transform: translateY(100%);
  transition: transform .3s var(--ease);
}
.bottom-sheet.show { transform: translateY(0); }
.sheet-handle { width: 38px; height: 4px; background: var(--line); border-radius: 2px; margin: 6px auto 16px; }
.sheet-content { display: flex; flex-direction: column; gap: 20px; }
.sheet-group { display: flex; flex-direction: column; gap: 8px; }
.sheet-group-title {
  font-size: 10px; font-weight: 600; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--text-3);
}
.sheet-options { display: flex; flex-wrap: wrap; gap: 8px; }
.sheet-chip {
  background: var(--paper);
  border: 1px solid var(--line);
  color: var(--text-2);
  font-family: var(--sans);
  font-size: var(--fs-2);
  font-weight: 500;
  padding: 9px 14px;
  border-radius: 999px;
  cursor: pointer;
  min-height: 38px;
  transition: border-color .12s, color .12s, background .12s;
}
.sheet-chip.active { background: var(--ink); border-color: var(--ink); color: #fff; }

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 1200px) {
  .grid { grid-template-columns: repeat(3, 1fr); }
  .card.expanded { grid-column: span 2; }
}
@media (max-width: 900px) {
  .hero { padding-top: 32px; }
  .hero-inner { grid-template-columns: 1fr; gap: 24px; }
  .hero-visual { height: 240px; order: -1; }
  .footer-inner { grid-template-columns: 1fr 1fr; gap: 28px; }
  .footer-subscribe { grid-column: 1 / -1; }
}
@media (max-width: 768px) {
  body { padding-bottom: 72px; }
  .topbar-inner { flex-wrap: wrap; gap: 12px; padding: 12px var(--pad-x); }
  .nav-search { order: 3; flex-basis: 100%; max-width: none; }
  .controls { display: none; }
  .status-bar { padding: 14px var(--pad-x) 8px; font-size: 10px; }
  .grid { grid-template-columns: repeat(2, 1fr); padding: 4px 12px 24px; gap: 12px; }
  .card { border-radius: 6px 6px 4px 4px; }
  .card:active { transform: scale(0.98); transition: transform .12s; }
  .card.expanded { grid-column: 1 / -1; }
  .info { padding: 10px 11px 12px; }
  .info .title { font-size: var(--fs-2); }
  .info .author { font-size: var(--fs-1); }
  .title-row { flex-direction: row; align-items: baseline; justify-content: space-between; gap: 6px; }
  .title-row .author { flex-shrink: 0; max-width: 45%; text-align: right; }
  .tag-lang { display: none; }
  .footer-inner { grid-template-columns: 1fr; gap: 26px; padding: 32px var(--pad-x) 32px; }
  .mobile-toolbar { display: flex; }
  .thumb-arrow { display: none; }
  .ext-link { opacity: 1; }
}
@media (max-width: 360px) {
  .grid { gap: 8px; padding: 4px 8px 20px; }
}

/* ============================================================
   Info pages (About / Contact / Privacy)
   ============================================================ */
.info-page {
  max-width: 720px;
  margin: 0 auto;
  padding: 56px var(--pad-x) 100px;
}
.info-page h1 {
  font-size: var(--fs-7);
  font-weight: 900;
  letter-spacing: -0.01em;
  margin: 0 0 10px;
  color: var(--ink);
}
.info-page .lede {
  font-size: var(--fs-1);
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--brown-deep);
  margin: 0 0 36px;
  padding-bottom: 18px;
  border-bottom: 1px dashed var(--line);
}
.info-page h2 {
  font-size: var(--fs-4);
  font-weight: 700;
  color: var(--ink);
  margin: 34px 0 12px;
}
.info-page p, .info-page li {
  font-size: var(--fs-3);
  font-weight: 400;
  line-height: 1.75;
  color: var(--text-2);
}
.info-page ul { padding-left: 20px; margin: 10px 0; }
.info-page li { margin-bottom: 8px; }
.info-page a.link { color: var(--vermilion); border-bottom: 1px solid var(--vermilion); }
.info-back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: var(--fs-1);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: 28px;
  transition: color .15s;
}
.info-back:hover { color: var(--vermilion); }
.info-contact-block {
  background: var(--card);
  border: 1px solid var(--line);
  border-left: 3px solid var(--brown);
  border-radius: var(--radius);
  padding: 24px 26px;
  margin-top: 14px;
}
.info-contact-block .label {
  font-size: 10px; font-weight: 600; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--text-3); margin-bottom: 8px;
}
.info-contact-block .email { font-family: var(--serif); font-size: var(--fs-5); font-weight: 700; color: var(--ink); }
.info-contact-block .email a { color: inherit; border-bottom: 2px solid var(--vermilion); padding-bottom: 1px; }

@media (max-width: 768px) {
  .info-page { padding: 32px 18px 90px; }
  .info-page h1 { font-size: var(--fs-6); }
}

/* ============================================================
   Detail Page
   ============================================================ */
.back-link {
  font-size: var(--fs-1);
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--text-3);
  transition: color .15s;
}
.back-link:hover { color: var(--vermilion); }

.detail-page { max-width: 1080px; margin: 0 auto; padding: 40px var(--pad-x) 100px; }

.detail-loading {
  display: flex; align-items: center; gap: 14px;
  padding: 60px var(--pad-x);
  font-size: var(--fs-1); font-weight: 500; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--text-3);
}
.detail-loading .loading-bar { flex: 1; height: 2px; background: var(--line); position: relative; overflow: hidden; border-radius: 2px; }
.detail-loading .loading-bar::after {
  content: ""; position: absolute; inset: 0; width: 30%;
  background: linear-gradient(90deg, var(--brown), var(--vermilion));
  animation: slide 1.1s var(--ease) infinite;
}

.detail-content { animation: fadeIn .3s var(--ease); }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

.detail-hero { display: flex; gap: 40px; margin-bottom: 40px; }

.detail-thumb-wrap {
  flex-shrink: 0;
  width: 300px;
  aspect-ratio: 3 / 4;
  background: var(--line-soft);
  border-radius: var(--radius);
  overflow: hidden;
  position: relative;
  box-shadow: inset 8px 0 16px rgba(0,0,0,0.22), 0 14px 30px rgba(30,42,60,0.18);
}
.detail-thumb-wrap .skeleton {
  position: absolute; inset: 0;
  background: linear-gradient(90deg, #EDE7DD 25%, #F6F2EC 50%, #EDE7DD 75%);
  background-size: 200% 100%;
  animation: shimmer 1.4s infinite linear;
}
.detail-thumb {
  width: 100%; height: 100%; object-fit: cover;
  opacity: 0; filter: blur(12px); transform: scale(1.04);
  transition: opacity .4s var(--ease), filter .5s var(--ease), transform .5s var(--ease);
}
.detail-thumb.loaded { opacity: 1; filter: blur(0); transform: scale(1); }
.thumb-fallback {
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--serif); font-size: 54px; font-weight: 700;
  letter-spacing: 0.05em; color: rgba(255,255,255,0.92);
}

.detail-info { flex: 1; display: flex; flex-direction: column; gap: 14px; }
.detail-info-block { border-top: 1px solid var(--line); padding-top: 16px; margin-top: 4px; }
.info-block-title {
  font-size: 10px; font-weight: 600; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--text-3); margin-bottom: 8px;
}
.info-block-content { font-size: var(--fs-2); line-height: 1.6; color: var(--text-2); }

.detail-title {
  font-family: var(--serif);
  font-size: var(--fs-7);
  font-weight: 900;
  line-height: 1.18;
  color: var(--ink);
  margin: 0;
  letter-spacing: -0.01em;
}
.detail-author { font-size: var(--fs-3); font-weight: 400; color: var(--text-2); margin: 0; }
.detail-tags { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 8px; }
.tag-year { background: var(--tag-cat-bg); color: var(--tag-cat-fg); }
.detail-meta { font-size: var(--fs-2); font-weight: 400; color: var(--text-3); letter-spacing: 0.04em; }

.detail-ext-link {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: var(--fs-1); font-weight: 600; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--vermilion);
  margin-top: 12px; transition: opacity .15s;
}
.detail-ext-link:hover { opacity: 0.8; }

.detail-sections { display: flex; flex-direction: column; gap: 32px; }
.detail-section { border-top: 1px solid var(--line); padding-top: 26px; }
.section-title {
  font-family: var(--serif);
  font-size: var(--fs-3);
  font-weight: 700;
  color: var(--ink);
  margin: 0 0 14px;
  letter-spacing: 0.01em;
}
.detail-desc { font-size: var(--fs-3); font-weight: 400; line-height: 1.8; color: var(--text-2); white-space: pre-line; }
.detail-desc .desc-h { font-weight: 700; color: var(--text); display: block; margin: 18px 0 8px; }
.desc-divider { border: 0; height: 1px; background: var(--line); margin: 24px 0; }
.detail-awards { font-size: var(--fs-3); font-weight: 400; line-height: 1.7; color: var(--text-2); }
.detail-author-intro {
  font-size: var(--fs-3); font-weight: 400; line-height: 1.8;
  color: var(--text-2); border-left: 3px solid var(--brown); padding-left: 14px;
}
.detail-meta-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px 24px; }
.meta-row { display: flex; flex-direction: column; gap: 2px; }
.meta-key { font-size: 10px; font-weight: 500; letter-spacing: 0.12em; text-transform: uppercase; color: var(--text-3); }
.meta-val { font-size: var(--fs-2); font-weight: 400; color: var(--text-2); }
.detail-error { text-align: center; padding: 80px var(--pad-x); }

@media (max-width: 900px) {
  .detail-hero { flex-direction: column; gap: 24px; }
  .detail-thumb-wrap { width: 100%; max-width: 320px; margin: 0 auto; }
  .detail-info { text-align: center; }
  .detail-tags { justify-content: center; }
}
@media (max-width: 768px) {
  .detail-page { padding: 24px 16px 90px; }
  .detail-title { font-size: var(--fs-6); }
  .detail-author { font-size: var(--fs-2); }
  .detail-section { padding-top: 20px; }
  .detail-meta-grid { grid-template-columns: 1fr; }
  .topbar-inner { padding: 12px 16px; }
}