/* Chapter reader: hero, fact sheet, digest, section nav, long-form text, figures, lineage chart. */

.ch-hero {
  position: relative;
  background: var(--green-deep);
  color: #fff;
}
.ch-hero-img {
  display: block;
  width: 100%;
  padding: 0;
  border: 0;
  background: #10190f;
  cursor: zoom-in;
}
.ch-hero-img img {
  width: 100%;
  height: min(62vh, 620px);
  object-fit: cover;
}
.ch-title {
  position: absolute;
  inset: auto 0 0 0;
  padding: 90px 0 26px;
  background: linear-gradient(180deg, transparent, rgba(12, 24, 14, 0.9) 62%);
  pointer-events: none;
}
.ch-hero.no-img .ch-title {
  position: static;
  padding: 44px 0 34px;
  background: none;
}
.ch-kicker {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.16em;
  color: var(--gold-bright);
}
.ch-title h1 {
  font-size: clamp(34px, 6vw, 68px);
  color: var(--gold-bright);
  margin-top: 4px;
  text-shadow: 0 2px 18px rgba(0, 0, 0, 0.4);
}
.ch-sub {
  font-family: var(--font-display);
  font-style: italic;
  font-size: clamp(18px, 2.4vw, 26px);
  margin-top: 4px;
}
.ch-alt {
  margin-top: 8px;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: #d8cfb8;
}
@media (max-width: 640px) {
  .ch-hero-img img {
    height: 46vh;
  }
  .ch-title {
    padding: 60px 0 16px;
  }
}

/* ---------- fact sheet + digest ---------- */
.ch-top {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.4fr);
  gap: 22px;
  margin-top: 26px;
  align-items: start;
}
.facts {
  margin: 0;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 6px 18px;
}
.fact {
  padding: 12px 0;
  border-top: 1px solid var(--line);
}
.fact:first-child {
  border-top: 0;
}
.fact dt {
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-faint);
}
.fact dd {
  margin: 3px 0 0;
  font-size: 15px;
  line-height: 1.45;
}
.fact-link {
  display: inline-block;
  margin-left: 8px;
  font-size: 13px;
  white-space: nowrap;
}
.tag {
  display: inline-block;
  margin-left: 8px;
  padding: 1px 7px;
  border-radius: 4px;
  border: 1px dashed var(--ink-faint);
  font-size: 11.5px;
  color: var(--ink-soft);
  font-style: normal;
  white-space: nowrap;
}
.digest {
  background: var(--green-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px 22px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 20px 28px;
}
.digest-sum {
  margin-top: 8px;
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.6;
}
.digest-hl {
  margin: 12px 0 0;
  padding-left: 18px;
  font-size: 14.5px;
  color: var(--ink-soft);
  display: grid;
  gap: 4px;
}
.digest-hl li::marker {
  color: var(--gold);
}
.milestones {
  list-style: none;
  margin: 10px 0 0;
  padding: 0 0 0 14px;
  border-left: 2px solid var(--gold);
  display: grid;
  gap: 10px;
}
.milestones li {
  position: relative;
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  gap: 8px;
  font-size: 14px;
  line-height: 1.4;
}
.milestones li::before {
  content: '';
  position: absolute;
  left: -20px;
  top: 6px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 0 3px var(--green-soft);
}
.milestones b {
  font-variant-numeric: tabular-nums;
  color: var(--lacquer);
}
.digest-note {
  grid-column: 1 / -1;
  font-size: 12px;
}
@media (max-width: 980px) {
  .ch-top {
    grid-template-columns: 1fr;
  }
}
@media (max-width: 640px) {
  .digest {
    grid-template-columns: 1fr;
    padding: 16px;
  }
}

/* ---------- section nav ---------- */
.sec-nav {
  position: sticky;
  top: calc(var(--bar) + 2px);
  z-index: 20;
  margin-top: 24px;
  background: color-mix(in srgb, var(--paper) 92%, transparent);
  backdrop-filter: blur(8px);
  border-block: 1px solid var(--line);
}
.sec-nav-inner {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 8px 20px;
  display: flex;
  gap: 6px;
  overflow-x: auto;
  scrollbar-width: thin;
}

/* ---------- long-form reading ---------- */
.reading {
  max-width: var(--read);
  margin: 30px auto 0;
  font-family: var(--font-body);
  font-size: calc(18px * var(--scale));
  line-height: 1.78;
  color: var(--ink);
}
.reading .sec {
  margin-top: 2.2em;
}
.reading .sec:first-child {
  margin-top: 0;
}
.reading h2 {
  font-size: 1.55em;
  color: var(--lacquer);
  padding-bottom: 0.3em;
  border-bottom: 1px solid var(--line);
  margin-bottom: 0.8em;
}
.reading h3 {
  font-size: 1.12em;
  font-style: italic;
  color: var(--green);
  margin: 1.4em 0 0.5em;
}
.reading p {
  margin-top: 0.95em;
  text-wrap: pretty;
  hyphens: none;
}
.reading .sec > p:first-of-type,
.reading h2 + p {
  margin-top: 0;
}
.reading p.drop::first-letter {
  float: left;
  font-family: var(--font-display);
  font-size: 3.5em;
  line-height: 0.82;
  padding: 0.08em 0.1em 0 0;
  color: var(--lacquer);
}
.reading blockquote {
  margin: 1.1em 0 0;
  padding: 0.2em 0 0.2em 1.1em;
  border-left: 3px solid var(--gold);
  font-style: italic;
  color: var(--ink-soft);
}
.reading p.boxed,
.reading blockquote.boxed {
  margin-top: 1em;
  padding: 0.9em 1.1em;
  background: var(--lacquer-soft);
  border: 1px solid var(--line);
  border-left: 3px solid var(--lacquer);
  border-radius: 0 var(--radius) var(--radius) 0;
  font-style: normal;
  color: var(--ink);
}
.reading .sec-heritage {
  padding: 1.1em 1.3em 1.3em;
  background: var(--lacquer-soft);
  border: 1px solid var(--line);
  border-left: 4px solid var(--lacquer);
  border-radius: 0 var(--radius) var(--radius) 0;
}
.reading .sec-heritage h2 {
  border: 0;
  margin-bottom: 0.3em;
  padding: 0;
  font-size: 1.25em;
}
.reading .sec-heritage p.boxed {
  padding: 0;
  margin-top: 0.4em;
  background: none;
  border: 0;
}
.reading .refs {
  font-family: var(--font-ui);
  font-size: 0.8em;
  line-height: 1.55;
  color: var(--ink-soft);
}
.reading .refs p {
  margin-top: 0.5em;
  padding-left: 1.8em;
  text-indent: -1.8em;
}
.reading sup {
  font-family: var(--font-ui);
  font-size: 0.66em;
  font-style: normal;
  line-height: 0;
}
.reading sup.has-note {
  cursor: pointer;
  color: var(--blue);
  padding: 0 3px;
  border-radius: 3px;
  background: color-mix(in srgb, var(--blue) 12%, transparent);
  margin-left: 1px;
}
.reading .hit {
  background: color-mix(in srgb, var(--gold-bright) 22%, transparent);
  box-shadow: -10px 0 0 color-mix(in srgb, var(--gold-bright) 22%, transparent), 10px 0 0 color-mix(in srgb, var(--gold-bright) 22%, transparent);
}
mark {
  background: var(--gold-bright);
  color: #2b2117;
  padding: 0 2px;
  border-radius: 2px;
}
.en-short {
  margin-bottom: 1.4em;
  padding: 10px 14px;
  border: 1px dashed var(--line);
  border-radius: 8px;
  font-family: var(--font-ui);
}
.front-reading p {
  margin-top: 1.05em;
}

/* ---------- figures ---------- */
.fig-row {
  display: flex;
  gap: 10px;
  margin: 1.6em calc((var(--read) - min(96vw, 1020px)) / 2) 0;
  font-family: var(--font-ui);
}
.fig-row.single.narrow {
  max-width: 420px;
  margin-inline: auto;
}
.fig {
  margin: 0;
  min-width: 0;
}
.fig button {
  display: block;
  width: 100%;
  padding: 0;
  border: 0;
  background: var(--paper-3);
  border-radius: 6px;
  overflow: hidden;
  cursor: zoom-in;
}
.fig.cutout button {
  background: transparent;
}
.fig img {
  width: 100%;
  height: auto;
  transition: transform 0.4s ease;
}
.fig button:hover img {
  transform: scale(1.03);
}
.fig figcaption {
  margin-top: 6px;
  font-size: 12.5px;
  line-height: 1.35;
  color: var(--ink-soft);
  text-align: center;
}
.sec-gallery .fig-row:first-of-type {
  margin-top: 0.4em;
}
@media (max-width: 1040px) {
  .fig-row {
    margin-inline: 0;
  }
}

/* ---------- lineage ---------- */
.lineage-top {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 12px;
  align-items: baseline;
  margin-top: 1.2em;
  font-family: var(--font-ui);
}
.lineage-strip {
  list-style: none;
  margin: 10px 0 0;
  padding: 6px 0 12px;
  display: flex;
  overflow-x: auto;
  font-family: var(--font-ui);
  scrollbar-width: thin;
}
.lineage-strip li {
  position: relative;
  flex: 0 0 104px;
  text-align: center;
}
.lineage-strip li + li::before {
  content: '';
  position: absolute;
  left: -50%;
  right: 50%;
  top: 17px;
  height: 2px;
  background: var(--gold);
}
.lineage-strip button {
  position: relative;
  width: 100%;
  border: 0;
  background: none;
  padding: 0 4px;
  display: grid;
  justify-items: center;
  gap: 6px;
}
.lineage-strip b {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: var(--green);
  color: #fff;
  font-size: 14px;
  border: 2px solid var(--gold-bright);
}
:root[data-theme='dark'] .lineage-strip b,
:root[data-theme='dark'] .gen-n {
  color: #10200f;
}
.lineage-strip span {
  font-size: 11.5px;
  line-height: 1.25;
  color: var(--ink-soft);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.lineage-strip button:hover b {
  background: var(--lacquer);
}
.lineage-chain {
  list-style: none;
  margin: 12px 0 0;
  padding: 0 0 0 20px;
  border-left: 2px solid var(--gold);
}
.lineage-chain > li {
  position: relative;
  padding: 0 0 12px 22px;
}
.gen-phase {
  font-family: var(--font-ui);
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--lacquer);
  margin: 10px 0 8px;
}
.gen {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}
.gen summary {
  list-style: none;
  cursor: pointer;
  padding: 12px 40px 12px 16px;
  position: relative;
  font-family: var(--font-ui);
}
.gen summary::-webkit-details-marker {
  display: none;
}
.gen summary::after {
  content: '+';
  position: absolute;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 22px;
  color: var(--ink-faint);
}
.gen[open] summary::after {
  content: '–';
}
.gen-n {
  position: absolute;
  left: -61px;
  top: 8px;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: var(--green);
  color: #fff;
  font-weight: 600;
  font-size: 14px;
  border: 2px solid var(--gold-bright);
}
.gen-head {
  display: flex;
  flex-wrap: wrap;
  gap: 2px 10px;
  align-items: baseline;
}
.gen-label {
  flex-basis: 100%;
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-faint);
}
.gen-name {
  font-family: var(--font-body);
  font-size: 1em;
  font-weight: 600;
  line-height: 1.35;
}
.gen-years {
  font-size: 13px;
  color: var(--lacquer);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}
.gen-body {
  padding: 0 16px 14px;
  font-size: 0.94em;
  line-height: 1.7;
  border-top: 1px dashed var(--line);
}
.gen-body p:first-child {
  margin-top: 0.8em;
}

/* ---------- pager ---------- */
.pager {
  max-width: 1020px;
  margin: 56px auto 0;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 14px;
  align-items: center;
  padding-top: 22px;
  border-top: 1px solid var(--line);
}
.pager-link {
  display: grid;
  gap: 2px;
  text-decoration: none;
  color: var(--ink);
}
.pager-link.next {
  text-align: right;
}
.pager-link small {
  font-size: 12px;
  color: var(--ink-faint);
}
.pager-link b {
  font-family: var(--font-display);
  font-size: 20px;
  color: var(--green);
}
.pager .btn svg {
  width: 18px;
  height: 18px;
}
@media (max-width: 640px) {
  .pager {
    grid-template-columns: 1fr 1fr;
  }
  .pager .btn {
    grid-column: 1 / -1;
    grid-row: 2;
    justify-content: center;
  }
}