:root {
  --ink: #15171f;
  --ink-2: #1b1e28;
  --ink-3: #222634;
  --paper: #e9e5da;
  --paper-dim: #a7a596;
  --slate: #586073;
  --slate-bar: #444c60;
  --rubric: #e0503a;
  --rubric-soft: #c4624f;
  --ochre: #c9a24b;
  --azure: #5b8cb6;
  --verdant: #6f9e64;
  --hair: rgba(233, 229, 218, 0.12);
  --hair-strong: rgba(233, 229, 218, 0.22);
  --display: "Fraunces", "Hoefler Text", Georgia, serif;
  --sans: "IBM Plex Sans", system-ui, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", monospace;
  --maxw: 1080px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: radial-gradient(140% 90% at 50% -10%, #1d2130 0%, var(--ink) 55%) fixed;
  color: var(--paper);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* faint paper grain, sits behind everything */
.grain {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

main, .masthead, .colophon { position: relative; z-index: 1; }

::selection { background: var(--rubric); color: #fff; }

/* ------------------------------------------------------------------ masthead */
.masthead {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: clamp(3.5rem, 8vw, 7rem) clamp(1.25rem, 4vw, 2.5rem) 2rem;
}

.eyebrow {
  font-family: var(--mono);
  font-size: 0.74rem;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--rubric);
  margin: 0 0 1.4rem;
}

.title {
  font-family: var(--display);
  font-weight: 900;
  font-size: clamp(3rem, 11vw, 7.5rem);
  line-height: 0.92;
  letter-spacing: -0.015em;
  margin: 0;
}
.title-em {
  font-style: italic;
  font-weight: 500;
  color: var(--paper-dim);
}

.dek {
  font-family: var(--display);
  font-weight: 400;
  font-size: clamp(1.15rem, 2.4vw, 1.6rem);
  line-height: 1.45;
  max-width: 36ch;
  margin: 1.8rem 0 0;
  color: #d8d4c8;
}
.dek em { font-style: italic; color: var(--paper); }

/* hero sparkline, the whole field at a glance */
.hero-spark {
  display: flex;
  align-items: flex-end;
  gap: 3px;
  height: 132px;
  margin: 2.8rem 0 0;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--hair);
}
.spark {
  flex: 1 1 0;
  min-width: 2px;
  background: var(--slate-bar);
  border-radius: 1px 1px 0 0;
  transition: height 0.9s cubic-bezier(0.16, 1, 0.3, 1);
}
.spark.canon { background: var(--ochre); }
.spark.christian { background: var(--azure); }
.spark.muslim { background: var(--verdant); }
.spark.anomaly { background: var(--rubric); box-shadow: 0 0 18px rgba(224, 80, 58, 0.55); }

.target-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0 2.5rem;
  margin: 1.6rem 0 0;
}
.target-meta div { padding: 0.2rem 0; }
.target-meta dt {
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--paper-dim);
}
.target-meta dd {
  margin: 0.1rem 0 0;
  font-family: var(--mono);
  font-size: 1.05rem;
  color: var(--paper);
}

/* ------------------------------------------------------------------ sections */
main { max-width: var(--maxw); margin: 0 auto; padding: 0 clamp(1.25rem, 4vw, 2.5rem); }

.section-head { margin: clamp(3rem, 7vw, 5.5rem) 0 1.8rem; }
h2 {
  font-family: var(--display);
  font-weight: 600;
  font-size: clamp(1.6rem, 3.6vw, 2.4rem);
  letter-spacing: -0.01em;
  margin: 0 0 0.5rem;
}
.lede { max-width: 56ch; color: #cdc9bd; margin: 0; }
.lede strong { color: var(--paper); font-weight: 600; }

/* ------------------------------------------------------------------ chart */
.chart { list-style: none; margin: 0; padding: 0; counter-reset: rank; }

.row {
  counter-increment: rank;
  border-top: 1px solid var(--hair);
}
.row:last-child { border-bottom: 1px solid var(--hair); }

.row-btn {
  display: grid;
  grid-template-columns: 2.4rem minmax(11rem, 1.4fr) 3fr 4.2rem;
  align-items: center;
  gap: 1rem;
  width: 100%;
  padding: 0.78rem 0.4rem;
  background: none;
  border: 0;
  color: inherit;
  text-align: left;
  cursor: pointer;
  font: inherit;
  transition: background 0.18s ease;
}
.row-btn:hover { background: rgba(233, 229, 218, 0.04); }
.row-btn:focus-visible { outline: 2px solid var(--rubric); outline-offset: -2px; }

.rank {
  font-family: var(--mono);
  font-size: 0.82rem;
  color: var(--paper-dim);
}
.row.is-anomaly .rank { color: var(--rubric); }

.book {
  display: flex;
  flex-direction: column;
}
.book .bk-title {
  font-family: var(--display);
  font-size: 1.06rem;
  font-weight: 600;
  line-height: 1.15;
}
.book .bk-meta {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--paper-dim);
  margin-top: 0.12rem;
}
.row.is-anomaly .bk-title { color: var(--rubric); }
.row.is-canon .bk-title { color: var(--ochre); }
.row.is-christian .bk-title { color: var(--azure); }
.row.is-muslim .bk-title { color: var(--verdant); }

.track {
  position: relative;
  height: 14px;
  background: linear-gradient(90deg, var(--hair) 0 1px, transparent 1px);
  background-size: 100% 100%;
}
.track::before { /* baseline tick at sigma 0 */
  content: "";
  position: absolute;
  left: 0; top: -3px; bottom: -3px;
  width: 1px;
  background: var(--hair-strong);
}
.bar {
  position: absolute;
  left: 0; top: 0; bottom: 0;
  background: var(--slate-bar);
  border-radius: 0 2px 2px 0;
  width: 0;
  transition: width 1s cubic-bezier(0.16, 1, 0.3, 1);
}
.row.is-canon .bar { background: var(--ochre); }
.row.is-christian .bar { background: var(--azure); }
.row.is-muslim .bar { background: var(--verdant); }
.row.is-anomaly .bar { background: var(--rubric); box-shadow: 0 0 16px rgba(224, 80, 58, 0.45); }

.sigma {
  font-family: var(--mono);
  font-size: 1rem;
  text-align: right;
  font-variant-numeric: tabular-nums;
}
.sigma small { display: block; font-size: 0.6rem; color: var(--paper-dim); letter-spacing: 0.1em; }
.row.is-anomaly .sigma { color: var(--rubric); }

/* colour key for the ranking taxonomy */
.color-key {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1.1rem;
  margin: 0.9rem 0 0;
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.03em;
  color: var(--paper-dim);
}
.color-key span, .color-key .ck { display: inline-flex; align-items: center; gap: 0.4rem; }
.ck-hint { color: var(--paper-dim); opacity: 0.7; }
.ck {
  font: inherit;
  color: var(--paper-dim);
  background: none;
  border: 1px solid transparent;
  border-radius: 999px;
  padding: 0.18rem 0.55rem;
  cursor: pointer;
  transition: opacity 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}
.ck:hover { border-color: var(--hair-strong); color: var(--paper); }
.ck.off { opacity: 0.4; text-decoration: line-through; }
.ck.off .sw { filter: grayscale(0.85); }
.sw { width: 0.7rem; height: 0.7rem; border-radius: 2px; flex: 0 0 auto; }
.sw-canon { background: var(--ochre); }
.sw-christian { background: var(--azure); }
.sw-muslim { background: var(--verdant); }
.sw-anomaly { background: var(--rubric); }
.sw-field { background: var(--slate-bar); }

/* expandable evidence panel */
.panel {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}
.panel-inner { overflow: hidden; }
.row.open .panel { grid-template-rows: 1fr; }

.panel-body { padding: 0.4rem 0.4rem 1.9rem; }

.stats {
  display: flex;
  flex-wrap: wrap;
  gap: 1.6rem;
  padding: 0.6rem 0 1.3rem;
  border-bottom: 1px solid var(--hair);
}
.stat .num { font-family: var(--mono); font-size: 1.15rem; }
.stat .lab { font-family: var(--mono); font-size: 0.62rem; letter-spacing: 0.16em; text-transform: uppercase; color: var(--paper-dim); }

.specimens-head {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--paper-dim);
  margin: 1.2rem 0 0.9rem;
}
.specimens {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 0.55rem;
}
.chip {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.6rem;
  padding: 0.5rem 0.7rem;
  background: var(--ink-2);
  border: 1px solid var(--hair);
  border-left-width: 3px;
  border-radius: 3px;
}
.chip.unique { border-left-color: var(--rubric); }
.chip.register { border-left-color: var(--ochre); }
.chip.shared { border-left-color: var(--slate); }
.chip .phrase { font-family: var(--mono); font-size: 0.82rem; color: var(--paper); }
.chip .tag { font-family: var(--mono); font-size: 0.6rem; letter-spacing: 0.05em; color: var(--paper-dim); white-space: nowrap; }
.chip.unique .tag { color: var(--rubric-soft); }
.chip.register .tag { color: var(--ochre); }

/* ------------------------------------------------------------------ reading + caveat */
.reading, .caveat { margin: clamp(3rem, 7vw, 5.5rem) 0; }
.legend { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 1.1rem; margin-top: 1.4rem; }
.legend-item { border-top: 2px solid var(--hair-strong); padding-top: 0.7rem; }
.legend-item .k { display: block; font-family: var(--mono); font-size: 0.85rem; color: var(--rubric); margin-bottom: 0.25rem; }
.legend-item .v { color: #c1bdb1; font-size: 0.92rem; }

.caveat-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 2.4rem; margin-top: 1.4rem; }
.caveat-cols p { margin: 0; color: #cdc9bd; }
.caveat-cols strong { color: var(--paper); }
.caveat-cols em { font-style: italic; color: var(--paper); }
.lead-cap {
  float: left;
  font-family: var(--display);
  font-weight: 900;
  font-size: 3.4rem;
  line-height: 0.74;
  padding: 0.35rem 0.5rem 0 0;
  color: var(--rubric);
}

/* ------------------------------------------------------------------ view toggle */
.viewnav {
  display: flex;
  gap: 0.4rem;
  margin: clamp(1.5rem, 4vw, 2.6rem) 0 0;
  border-bottom: 1px solid var(--hair);
}
.tab {
  appearance: none;
  background: none;
  border: 0;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  padding: 0.6rem 0.2rem;
  margin-right: 1.6rem;
  font-family: var(--mono);
  font-size: 0.74rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--paper-dim);
  cursor: pointer;
  transition: color 0.18s ease, border-color 0.18s ease;
}
.tab:hover { color: var(--paper); }
.tab.is-active { color: var(--rubric); border-bottom-color: var(--rubric); }
.tab:focus-visible { outline: 2px solid var(--rubric); outline-offset: 2px; }

.view[hidden] { display: none; }

/* ------------------------------------------------------------------ similarity map */
.mapwrap {
  position: relative;
  margin: 1.8rem 0 0;
  overflow-x: auto;
  padding-bottom: 0.5rem;
}
.cluster svg { display: block; }
.cluster text { letter-spacing: 0.01em; }

.tooltip {
  position: absolute;
  z-index: 5;
  pointer-events: none;
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
  max-width: 190px;
  padding: 0.4rem 0.55rem;
  background: var(--ink);
  border: 1px solid var(--hair-strong);
  border-radius: 4px;
  box-shadow: 0 6px 22px rgba(0, 0, 0, 0.5);
}
.tooltip .t-pair { font-family: var(--mono); font-size: 0.72rem; color: var(--paper); line-height: 1.3; }
.tooltip .t-val { font-family: var(--mono); font-size: 0.8rem; color: var(--rubric); }

.map-read {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.4rem;
  margin: 2.2rem 0 0;
}
.map-read p { margin: 0; color: #cdc9bd; }
.map-read strong { color: var(--paper); }
.map-read em { font-style: italic; color: var(--paper); }

@media (max-width: 720px) {
  .map-read { grid-template-columns: 1fr; gap: 1.4rem; }
}

/* ------------------------------------------------------------ full-corpus map */
.mapwrap-full { overflow: auto; max-height: 82vh; }
.cluster-large {
  display: inline-flex;
  align-items: flex-start;
  gap: 6px;
  padding: 2px 0;
}
.dendro-large { display: block; flex: 0 0 auto; opacity: 0.92; }
.heat-wrap { position: relative; flex: 0 0 auto; }
.heat-canvas { display: block; image-rendering: pixelated; }
.heat-hl {
  position: absolute;
  pointer-events: none;
  border: 1.5px dashed var(--rubric);
  box-shadow: 0 0 0 1px rgba(224, 80, 58, 0.25), 0 0 18px 4px rgba(224, 80, 58, 0.18);
}
.heat-tip { position: fixed; }

.inline-link {
  appearance: none;
  background: none;
  border: 0;
  padding: 0;
  font: inherit;
  color: var(--rubric);
  cursor: pointer;
  border-bottom: 1px solid rgba(224, 80, 58, 0.4);
}
.inline-link:hover { border-bottom-color: var(--rubric); }

/* -------------------------------------------------------------- full screen */
.fs-btn {
  position: absolute;
  top: 0.6rem;
  right: 0.6rem;
  z-index: 6;
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.05em;
  color: var(--paper-dim);
  background: rgba(21, 23, 31, 0.72);
  border: 1px solid var(--hair-strong);
  border-radius: 4px;
  padding: 0.35rem 0.6rem;
  cursor: pointer;
  backdrop-filter: blur(3px);
  transition: color 0.15s ease, border-color 0.15s ease;
}
.fs-btn:hover { color: var(--paper); border-color: var(--rubric); }
.fs-btn[hidden] { display: none; }

/* zoom controls for the full-corpus heatmap */
.zoom-ctl {
  display: flex;
  gap: 1px;
  left: 0.6rem;
  position: absolute;
  top: 0.6rem;
  z-index: 6;
}
.zoom-btn {
  backdrop-filter: blur(3px);
  background: rgba(21, 23, 31, 0.72);
  border: 1px solid var(--hair-strong);
  color: var(--paper-dim);
  cursor: pointer;
  font-family: var(--mono);
  font-size: 0.78rem;
  line-height: 1;
  padding: 0.32rem 0.52rem;
  transition: border-color 0.15s ease, color 0.15s ease;
}
.zoom-btn:hover { border-color: var(--rubric); color: var(--paper); }
.zoom-btn:first-child { border-radius: 4px 0 0 4px; }
.zoom-btn:last-child { border-radius: 0 4px 4px 0; }
.zoom-pct { cursor: pointer; min-width: 3.4em; text-align: center; }
.mapwrap-full:fullscreen .zoom-ctl { left: 1.1rem; position: fixed; top: 0.9rem; }

/* When a figure is fullscreened, fill the screen with the page's own canvas
   (default is black) and CENTER the map, scaled to fill. :fullscreen and the
   -webkit- variant must be separate rules, one unknown pseudo invalidates the
   whole selector list, so the figure rule is duplicated. */
.mapwrap:fullscreen,
.mapwrap-full:fullscreen {
  max-height: none;
  width: 100%;
  height: 100%;
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: radial-gradient(140% 90% at 50% -10%, #1d2130 0%, var(--ink) 55%);
}
.mapwrap:-webkit-full-screen,
.mapwrap-full:-webkit-full-screen {
  max-height: none;
  width: 100%;
  height: 100%;
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: radial-gradient(140% 90% at 50% -10%, #1d2130 0%, var(--ink) 55%);
}
/* 50-book map: an <svg> with a viewBox, fill the figure and let its own
   preserveAspectRatio fit-and-center it. */
.mapwrap:fullscreen .cluster {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}
.mapwrap:fullscreen .cluster svg {
  /* the renderer sets max-width inline (beats a normal rule), override it. */
  width: 100% !important;
  height: 100% !important;
  max-width: none !important;
}
/* 451-book map: the zoom model sizes and scales .cluster-large, and fs.js seeds
   the zoom to fit on entering full screen. Let the figure scroll so you can pan
   when zoomed in. "safe center" centers the block until it overflows, then aligns
   to the start so every edge stays reachable. */
.mapwrap-full:fullscreen .cluster-large,
.mapwrap-full:-webkit-full-screen .cluster-large { will-change: transform; }
.mapwrap-full:fullscreen { align-items: safe center; justify-content: safe center; overflow: auto; }
.mapwrap-full:-webkit-full-screen { align-items: safe center; justify-content: safe center; overflow: auto; }
.mapwrap:fullscreen .fs-btn,
.mapwrap-full:fullscreen .fs-btn { position: fixed; top: 0.9rem; right: 1.1rem; }

/* ----------------------------------------------------------- ranking controls */
.chart-section { position: relative; }
.rank-controls {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 0.9rem;
  margin: 1.2rem 0 0;
}
.ctl-label {
  font-family: var(--mono);
  font-size: 0.6rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--paper-dim);
}
.seg {
  display: inline-flex;
  border: 1px solid var(--hair-strong);
  border-radius: 5px;
  overflow: hidden;
}
.seg-btn {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--paper-dim);
  background: transparent;
  border: 0;
  border-right: 1px solid var(--hair);
  padding: 0.32rem 0.62rem;
  cursor: pointer;
  transition: color 0.15s ease, background 0.15s ease;
}
.seg-btn:last-child { border-right: 0; }
.seg-btn:hover { color: var(--paper); }
.seg-btn.on { color: var(--ink); background: var(--paper-dim); }
.rank-status { font-family: var(--mono); font-size: 0.66rem; color: var(--paper-dim); }

/* compact rows when a large count is shown */
.chart.dense .row-btn {
  padding: 0.42rem 0.4rem;
  grid-template-columns: 2.2rem minmax(9rem, 1.3fr) 3fr 3.4rem;
  gap: 0.7rem;
}
.chart.dense .book .bk-title { font-size: 0.92rem; }
.chart.dense .book .bk-meta { font-size: 0.64rem; }
.chart.dense .track { height: 10px; }
.chart.dense .sigma { font-size: 0.85rem; }

/* ranking in full screen: fill, scroll, and flow into columns when dense */
.chart-section:fullscreen {
  width: 100%; height: 100%; margin: 0; padding: 1.6rem 2rem 2.4rem;
  box-sizing: border-box; overflow: auto;
  background: radial-gradient(140% 90% at 50% -10%, #1d2130 0%, var(--ink) 55%);
}
.chart-section:-webkit-full-screen {
  width: 100%; height: 100%; margin: 0; padding: 1.6rem 2rem 2.4rem;
  box-sizing: border-box; overflow: auto;
  background: radial-gradient(140% 90% at 50% -10%, #1d2130 0%, var(--ink) 55%);
}
.chart-section:fullscreen .fs-btn { position: fixed; top: 0.9rem; right: 1.1rem; }
.chart-section:fullscreen .chart.dense {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(460px, 1fr));
  column-gap: 2.2rem;
  align-content: start;
}
.chart-section:-webkit-full-screen .chart.dense {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(460px, 1fr));
  column-gap: 2.2rem;
}

/* ------------------------------------------------------------------ colophon */
.colophon {
  max-width: var(--maxw);
  margin: 4rem auto 0;
  padding: 2rem clamp(1.25rem, 4vw, 2.5rem) 3.5rem;
  border-top: 1px solid var(--hair);
}
.colophon p { color: var(--paper-dim); font-size: 0.86rem; max-width: 70ch; margin: 0; }
.mono { font-family: var(--mono); color: var(--rubric-soft); }

/* language switcher (i18n.js wires #langSelect) */
.i18n-switch {
  align-items: center;
  color: var(--paper-dim);
  display: flex;
  font-family: var(--mono);
  font-size: 0.72rem;
  gap: 0.5rem;
  letter-spacing: 0.04em;
  margin-top: 1.4rem;
  text-transform: uppercase;
}
.i18n-switch select {
  background: var(--ink-2);
  border: 1px solid var(--hair-strong);
  border-radius: 4px;
  color: var(--paper);
  font: inherit;
  padding: 0.25rem 0.5rem;
}

/* ------------------------------------------------------------------ responsive */
@media (max-width: 720px) {
  .row-btn { grid-template-columns: 1.8rem 1fr 3.2rem; gap: 0.7rem; }
  .track { display: none; } /* bars don't read well on narrow screens; sigma carries it */
  .caveat-cols { grid-template-columns: 1fr; gap: 1.4rem; }
  .target-meta { gap: 0 1.4rem; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; scroll-behavior: auto; }
}

/* ----------------------------------------------------------- book detail panel */
/* clickable map row labels */
.rowlabel { cursor: pointer; }
.rowlabel:hover { fill: var(--paper) !important; text-decoration: underline; }

/* the "↗" detail affordance on each ranking row */
.row { position: relative; }
.row-detail {
  position: absolute; top: 0.5rem; right: 0.5rem; z-index: 2;
  width: 1.7rem; height: 1.7rem; border-radius: 4px;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--mono); font-size: 0.8rem; line-height: 1;
  color: var(--paper-dim); background: rgba(21, 23, 31, 0.6);
  border: 1px solid transparent; cursor: pointer; opacity: 0;
  transition: opacity 0.15s, color 0.15s, border-color 0.15s;
}
.row:hover .row-detail, .row-detail:focus-visible { opacity: 1; }
.row-detail:hover { color: var(--rubric); border-color: var(--hair-strong); }

/* the slide-in panel */
.book-overlay { position: fixed; inset: 0; z-index: 50; }
.book-overlay[hidden] { display: none; }
.book-scrim {
  position: absolute; inset: 0;
  background: rgba(8, 9, 13, 0.62); backdrop-filter: blur(2px);
  animation: bp-scrim 0.2s ease;
}
.book-panel {
  position: absolute; top: 0; right: 0; height: 100%;
  width: min(440px, 92vw);
  background: radial-gradient(120% 80% at 100% 0%, #1d2130 0%, var(--ink) 60%);
  border-left: 1px solid var(--hair-strong);
  box-shadow: -18px 0 50px rgba(0, 0, 0, 0.5);
  display: flex; flex-direction: column;
  animation: bp-slide 0.22s cubic-bezier(0.2, 0.7, 0.3, 1);
}
@keyframes bp-scrim { from { opacity: 0; } }
@keyframes bp-slide { from { transform: translateX(24px); opacity: 0; } }
@media (prefers-reduced-motion: reduce) { .book-scrim, .book-panel { animation: none; } }
.book-close {
  position: absolute; top: 0.7rem; right: 0.85rem; z-index: 3;
  background: none; border: 0; cursor: pointer; line-height: 1;
  font-family: var(--mono); font-size: 0.95rem; color: var(--paper-dim);
}
.book-close:hover { color: var(--rubric); }
.book-panel-scroll { overflow-y: auto; padding: 2.3rem 1.8rem 2.6rem; }

.bp-kicker { font-family: var(--mono); font-size: 0.64rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--paper-dim); margin: 0 0 0.45rem; }
.bp-title { font-family: var(--display); font-weight: 600; font-size: 1.5rem; line-height: 1.15; margin: 0 0 0.25rem; color: var(--paper); }
.bp-cite { font-family: var(--mono); font-size: 0.8rem; color: var(--paper-dim); margin: 0 0 1.15rem; }
.bp-read {
  display: inline-flex; align-items: center; gap: 0.6rem;
  font-family: var(--mono); font-size: 0.82rem; color: var(--paper); text-decoration: none;
  background: rgba(224, 80, 58, 0.12); border: 1px solid var(--rubric-soft);
  border-radius: 5px; padding: 0.55rem 0.85rem; margin: 0 0 1.4rem;
  transition: background 0.15s, border-color 0.15s;
}
.bp-read:hover { background: rgba(224, 80, 58, 0.2); border-color: var(--rubric); }
.bp-read.sm { font-size: 0.74rem; padding: 0.4rem 0.7rem; margin: 0 0 1rem; }
.bp-host { font-size: 0.66rem; color: var(--paper-dim); border-left: 1px solid var(--hair-strong); padding-left: 0.6rem; }
.bp-noread { font-family: var(--mono); font-size: 0.78rem; color: var(--paper-dim); margin: 0 0 1.2rem; }
.bp-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0.6rem 0.5rem; margin: 0 0 1.3rem; }
.bp-stats .stat { background: rgba(34, 38, 52, 0.5); border: 1px solid var(--hair); border-radius: 5px; padding: 0.5rem 0.55rem; }
.bp-stats .num { font-family: var(--mono); font-size: 0.98rem; color: var(--paper); }
.bp-stats .lab { font-size: 0.6rem; color: var(--paper-dim); margin-top: 0.15rem; }
.bp-sub { font-size: 0.78rem; color: var(--paper-dim); margin: 0 0 0.7rem; }
.bp-chips { display: flex; flex-wrap: wrap; gap: 0.35rem; }
.bp-nn { font-size: 0.86rem; color: #cdc9bd; margin: 0.3rem 0 0; }
.bp-nn strong { color: var(--paper); }
.bp-dim { color: var(--paper-dim); }