/* ============================================================
   Category Page — Editorial Long-Read Layout
   ============================================================ */

.cat-hero {
  max-width: var(--max);
  margin: 0 auto;
  padding: clamp(60px, 9vw, 120px) var(--gutter) clamp(48px, 6vw, 80px);
  border-bottom: 1px solid var(--rule);
  position: relative;
}
.cat-hero-inner { max-width: 960px; }
.breadcrumb {
  font-family: var(--sans-en);
  font-size: 11px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 40px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}
.breadcrumb a { color: var(--ink-faint); transition: color .25s; border-bottom: 1px solid transparent; }
.breadcrumb a:hover { color: var(--accent); border-bottom-color: var(--accent); }
.crumb-sep { color: var(--rule); }

.cat-hero-num {
  font-family: var(--serif-en);
  font-style: italic;
  font-size: 18px;
  color: var(--accent);
  margin-bottom: 14px;
}
.cat-title {
  font-family: var(--serif-jp);
  font-weight: 600;
  font-size: clamp(44px, 7vw, 88px);
  line-height: 1.08;
  letter-spacing: .02em;
  margin: 0 0 18px;
  color: var(--ink);
}
.cat-title-en {
  font-family: var(--serif-en);
  font-style: italic;
  font-size: 22px;
  color: var(--ink-soft);
  margin: 0 0 36px;
  letter-spacing: .02em;
}
.cat-title-en em {
  color: var(--accent);
  font-family: var(--serif-en);
  font-weight: 500;
}
.cat-lede {
  font-family: var(--serif-jp);
  font-size: clamp(16px, 1.5vw, 20px);
  line-height: 2;
  color: var(--ink-soft);
  max-width: 56ch;
  margin: 0 0 48px;
}
.cat-hero-meta {
  display: none;
}
.cat-hero-meta .hero-meta-value small {
  font-family: var(--sans-en);
  font-size: 13px;
  letter-spacing: .12em;
  color: var(--ink-faint);
  margin-left: 4px;
}

/* ---------- TOC ---------- */
.toc {
  max-width: var(--max);
  margin: clamp(40px, 5vw, 72px) auto 0;
  padding: 0 var(--gutter);
}
.toc-inner {
  background: var(--paper-warm);
  border-left: 3px solid var(--accent);
  padding: 32px 40px;
  max-width: 720px;
}
.toc-label {
  font-family: var(--sans-en);
  font-size: 10px;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 16px;
}
.toc-list {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: toc;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px 28px;
}
.toc-list li {
  counter-increment: toc;
  position: relative;
  padding-left: 30px;
}
.toc-list li::before {
  content: counter(toc, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 2px;
  font-family: var(--serif-en);
  font-style: italic;
  font-size: 13px;
  color: var(--gold);
}
.toc-list a {
  font-family: var(--serif-jp);
  font-size: 14.5px;
  color: var(--ink-soft);
  line-height: 1.7;
  border-bottom: 1px solid transparent;
  transition: color .25s, border-color .25s;
}
.toc-list a:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* ---------- Article ---------- */
.article {
  max-width: var(--max);
  margin: 0 auto;
  padding: clamp(60px, 8vw, 110px) var(--gutter);
}
.chapter {
  max-width: 720px;
  margin: 0 auto clamp(60px, 7vw, 96px);
  scroll-margin-top: 100px;
}
.chap-eyebrow {
  display: flex;
  align-items: center;
  gap: 14px;
  font-family: var(--sans-en);
  font-size: 11px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 20px;
}
.chap-num {
  font-family: var(--serif-en);
  font-style: italic;
  font-size: 16px;
  color: var(--accent);
  text-transform: none;
  letter-spacing: .02em;
}
.chap-rule { flex: 1; height: 1px; background: var(--rule); }
.chap-title {
  font-family: var(--serif-jp);
  font-weight: 600;
  font-size: clamp(30px, 3.6vw, 44px);
  letter-spacing: .02em;
  margin: 0 0 28px;
  color: var(--ink);
  line-height: 1.3;
}
.chap-body {
  font-family: var(--serif-jp);
  font-size: 16.5px;
  line-height: 2.1;
  color: var(--ink-soft);
  margin: 0 0 24px;
  letter-spacing: .01em;
}

.bullet-list {
  list-style: none;
  padding: 0;
  margin: 0 0 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.bullet-list li {
  font-family: var(--serif-jp);
  font-size: 15.5px;
  line-height: 1.9;
  color: var(--ink-soft);
  padding-left: 24px;
  position: relative;
}
.bullet-list li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-family: var(--serif-en);
}

.callout {
  margin: 32px 0;
  padding: 28px 32px;
  background: var(--paper-warm);
  border-left: 3px solid var(--gold);
}
.callout-label {
  font-family: var(--sans-en);
  font-size: 10px;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 10px;
}
.callout-body {
  font-family: var(--serif-jp);
  font-size: 15px;
  line-height: 2;
  color: var(--ink-soft);
}

/* table */
.table-wrap {
  margin: 28px 0;
  overflow-x: auto;
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
}
.table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--serif-jp);
  font-size: 14.5px;
}
.table thead th {
  text-align: left;
  font-family: var(--sans-en);
  font-size: 10px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--ink-faint);
  padding: 16px 20px;
  border-bottom: 1px solid var(--rule);
  font-weight: 500;
}
.table td {
  padding: 16px 20px;
  border-bottom: 1px dashed var(--rule-soft);
  color: var(--ink-soft);
  line-height: 1.7;
  vertical-align: top;
}
.table tr:last-child td { border-bottom: none; }
.table td:first-child {
  font-weight: 500;
  color: var(--ink);
  font-family: var(--serif-jp);
}

/* steps */
.steps {
  display: flex;
  flex-direction: column;
  gap: 24px;
  margin: 32px 0;
}
.step {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 28px;
  padding: 24px 0;
  border-top: 1px solid var(--rule-soft);
}
.step:first-child { border-top: none; padding-top: 0; }
.step-num {
  font-family: var(--serif-en);
  font-style: italic;
  font-size: 40px;
  line-height: 1;
  color: var(--accent);
  text-align: center;
}
.step-title {
  font-family: var(--serif-jp);
  font-weight: 600;
  font-size: 20px;
  color: var(--ink);
  margin-bottom: 10px;
  letter-spacing: .02em;
}
.step-body p {
  font-family: var(--serif-jp);
  font-size: 15.5px;
  line-height: 1.95;
  color: var(--ink-soft);
  margin: 0;
}

/* question */
.question-block {
  background: var(--paper-warm);
  border-left: 3px solid var(--accent);
  padding: 48px clamp(28px, 5vw, 56px);
  max-width: 820px;
  margin: clamp(60px, 7vw, 96px) auto;
}
.vignette {
  font-family: var(--serif-jp);
  font-size: 16.5px;
  line-height: 2.1;
  color: var(--ink);
  padding: 28px 0;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  margin-bottom: 36px;
}
.vignette p { margin: 0 0 12px; }
.vignette p:last-child { margin-bottom: 0; }
.vignette strong { color: var(--accent); font-weight: 600; }

.choices {
  list-style: none;
  padding: 0;
  margin: 0 0 32px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.choices li {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 16px;
  align-items: center;
  padding: 16px 20px;
  background: var(--paper);
  font-family: var(--serif-jp);
  font-size: 15.5px;
  color: var(--ink-soft);
  border: 1px solid var(--rule-soft);
  transition: border-color .25s, color .25s, background .25s;
  cursor: pointer;
}
.choices li:hover {
  border-color: var(--accent);
  color: var(--ink);
  background: #fdfaf1;
}
.choice-label {
  font-family: var(--serif-en);
  font-style: italic;
  font-size: 22px;
  color: var(--accent);
  text-align: center;
}

/* answer */
.answer {
  margin-top: 24px;
  border-top: 1px solid var(--rule);
  padding-top: 20px;
}
.answer > summary {
  cursor: pointer;
  font-family: var(--sans-en);
  font-size: 12px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--accent);
  padding: 12px 0;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 10px;
}
.answer > summary::-webkit-details-marker { display: none; }
.answer > summary::before {
  content: "+";
  font-family: var(--serif-en);
  font-size: 20px;
  line-height: 1;
  color: var(--accent);
  transition: transform .3s;
}
.answer[open] > summary::before { content: "−"; }
.answer-body {
  padding-top: 16px;
  font-family: var(--serif-jp);
  font-size: 15.5px;
  line-height: 2;
  color: var(--ink-soft);
}
.answer-body p { margin: 0 0 16px; }
.answer-correct {
  font-family: var(--serif-jp);
  font-size: 17px;
  color: var(--ink);
}
.answer-correct strong {
  color: var(--accent);
  font-size: 22px;
  font-family: var(--serif-en);
  font-style: italic;
  margin: 0 4px;
}
.answer-pearl {
  margin-top: 20px;
  padding: 20px 24px;
  background: var(--paper);
  border-left: 2px solid var(--gold);
}
.answer-pearl strong {
  font-family: var(--sans-en);
  font-size: 10px;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--gold);
  display: block;
  margin-bottom: 6px;
}

/* bottom nav */
.cat-nav {
  max-width: var(--max);
  margin: 0 auto;
  padding: clamp(40px, 5vw, 72px) var(--gutter);
  display: flex;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
  border-top: 1px solid var(--rule);
}
.cat-nav a {
  font-family: var(--serif-jp);
  font-size: 15px;
  color: var(--ink-soft);
  padding: 14px 0;
  border-bottom: 1px solid transparent;
  transition: color .25s, border-color .25s;
  letter-spacing: .04em;
}
.cat-nav a:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* ---------- Question set header ---------- */
.qset-header {
  max-width: 820px;
  margin: clamp(56px,7vw,96px) auto 36px;
  display: flex;
  align-items: center;
  gap: 18px;
}
.q-type-badge {
  display: inline-flex;
  align-items: center;
  font-family: var(--sans-en);
  font-size: 10px;
  letter-spacing: .22em;
  text-transform: uppercase;
  padding: 6px 16px;
  border: 1px solid var(--accent);
  color: var(--accent);
  white-space: nowrap;
}
.q-type-badge.clinical {
  border-color: var(--gold);
  color: var(--gold);
}
.qset-title {
  font-family: var(--serif-jp);
  font-size: 22px;
  font-weight: 500;
  color: var(--ink);
  margin: 0;
  letter-spacing: .04em;
}
.qset-rule {
  flex: 1;
  height: 1px;
  background: var(--rule);
}

/* ---------- Question block (multiple) ---------- */
.question-block + .question-block {
  margin-top: 36px;
  border-top: 1px dashed var(--rule-soft);
  padding-top: 36px;
}
.q-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 20px;
}
.q-num {
  font-family: var(--serif-en);
  font-style: italic;
  font-size: 18px;
  color: var(--accent);
}
.q-num.clinical { color: var(--gold); }
.q-source {
  font-family: var(--sans-en);
  font-size: 10px;
  letter-spacing: .18em;
  color: var(--ink-faint);
  margin-left: auto;
  border: 1px solid var(--rule);
  padding: 3px 10px;
}

/* ---------- SVG figure ---------- */
.svg-figure {
  margin: 0 0 28px;
  background: var(--paper-warm);
  border: 1px solid var(--rule-soft);
  padding: 24px;
  text-align: center;
}
.svg-figure svg {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 0 auto;
}
.svg-figure figcaption {
  font-family: var(--sans-en);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--ink-faint);
  margin-top: 12px;
  text-align: center;
}

@media (max-width: 860px) {
  .toc-list { grid-template-columns: 1fr; }
  .step { grid-template-columns: 40px 1fr; gap: 18px; }
  .step-num { font-size: 28px; }
  .question-block { padding: 32px 24px; }
  .choices li { grid-template-columns: 40px 1fr; gap: 12px; padding: 14px 16px; font-size: 15px; }
  .choice-label { font-size: 18px; }
  .qset-title { font-size: 18px; }
  .svg-figure { padding: 16px; }
}