/* Article + articles-index styles. Extends lightbreak.css tokens. */

/* ============== Articles index (listing) ============== */
.idx-page { background: var(--paper); }
.idx-hero { padding: 64px 0 40px; border-bottom: 1px solid var(--rule); }
.idx-hero .kicker { font-family: var(--mono); font-size: 11px; letter-spacing: 0.18em; text-transform: uppercase; font-weight: 700; color: oklch(0.58 0.13 45); margin-bottom: 14px; }
.idx-hero h1 { font-family: var(--display); font-size: clamp(38px, 5.2vw, 64px); line-height: 1.02; margin: 0 0 18px; letter-spacing: -0.012em; }
.idx-hero .lede { font-family: var(--body); font-size: 18px; line-height: 1.55; max-width: 680px; color: var(--ink-2, oklch(0.30 0.02 260)); margin: 0; }

.idx-list { padding: 48px 0 96px; }
.idx-rail {
  display: grid;
  grid-template-columns: minmax(200px, 240px) 1fr;
  gap: 32px 56px;
  border-top: 1px solid var(--rule);
  padding: 28px 0;
}
.idx-rail + .idx-rail { border-top: 1px solid var(--rule); }
.idx-rail:last-child { border-bottom: 1px solid var(--rule); }
.idx-meta { display: flex; flex-direction: column; gap: 6px; }
.idx-meta .ctag { font-family: var(--mono); font-size: 11px; letter-spacing: 0.18em; text-transform: uppercase; font-weight: 700; color: oklch(0.58 0.13 45); }
.idx-meta .date { font-family: var(--mono); font-size: 12px; color: oklch(0.50 0.02 260); letter-spacing: 0.04em; }
.idx-meta .reading { font-family: var(--mono); font-size: 12px; color: oklch(0.50 0.02 260); letter-spacing: 0.04em; }
.idx-card a { color: inherit; text-decoration: none; display: block; }
.idx-card h2 { font-family: var(--display); font-size: clamp(24px, 2.8vw, 32px); line-height: 1.18; margin: 0 0 10px; letter-spacing: -0.005em; }
.idx-card .dek { font-family: var(--body); font-size: 16.5px; line-height: 1.55; color: var(--ink-2, oklch(0.30 0.02 260)); margin: 0 0 14px; max-width: 720px; }
.idx-card .more {
  font-family: var(--mono); font-size: 12px; letter-spacing: 0.06em;
  text-transform: uppercase; font-weight: 700;
  color: oklch(0.32 0.09 258);
  display: inline-flex; align-items: center; gap: 6px;
}
.idx-card a:hover .more { color: oklch(0.22 0.07 258); }
.idx-card a:hover h2 { text-decoration: underline; text-underline-offset: 4px; text-decoration-thickness: 1px; }
@media (max-width: 720px) {
  .idx-rail { grid-template-columns: 1fr; gap: 14px; padding: 24px 0; }
  .idx-meta { flex-direction: row; flex-wrap: wrap; gap: 12px; }
}

/* ============== Single article ============== */
.art-page { background: var(--paper); }
.art-hero { padding: 56px 0 24px; border-bottom: 1px solid var(--rule); }
.art-hero .crumbs { font-family: var(--mono); font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase; color: oklch(0.50 0.02 260); margin-bottom: 18px; }
.art-hero .crumbs a { color: oklch(0.32 0.09 258); text-decoration: none; }
.art-hero .crumbs a:hover { text-decoration: underline; }
.art-hero .kicker { font-family: var(--mono); font-size: 11px; letter-spacing: 0.18em; text-transform: uppercase; font-weight: 700; color: oklch(0.58 0.13 45); margin-bottom: 16px; }
.art-hero h1 { font-family: var(--display); font-size: clamp(34px, 4.6vw, 56px); line-height: 1.06; margin: 0 0 18px; max-width: 920px; letter-spacing: -0.012em; }
.art-hero .dek { font-family: var(--body); font-size: 19px; line-height: 1.55; max-width: 760px; color: var(--ink-2, oklch(0.30 0.02 260)); margin: 0 0 26px; }
.art-hero .byline { display: flex; gap: 14px; flex-wrap: wrap; align-items: center; font-family: var(--mono); font-size: 12px; letter-spacing: 0.04em; color: oklch(0.50 0.02 260); }
.art-hero .byline .dot { color: oklch(0.70 0.02 260); }
.art-hero .byline .by { color: var(--ink); font-weight: 700; }

.art-body { padding: 40px 0 96px; }
.art-grid {
  display: grid;
  grid-template-columns: minmax(220px, 260px) 1fr;
  gap: 32px 64px;
  align-items: start;
}
@media (max-width: 880px) {
  .art-grid { grid-template-columns: 1fr; gap: 24px; }
  .art-toc { position: relative; top: 0 !important; }
}
.art-toc {
  position: sticky;
  top: 24px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  line-height: 1.55;
}
.art-toc .label { text-transform: uppercase; font-weight: 700; color: oklch(0.58 0.13 45); margin-bottom: 12px; letter-spacing: 0.16em; }
.art-toc ol { list-style: none; padding: 0; margin: 0; counter-reset: toc; }
.art-toc li { counter-increment: toc; padding: 4px 0; }
.art-toc li::before { content: counter(toc, decimal-leading-zero) " · "; color: oklch(0.50 0.02 260); }
.art-toc a { color: var(--ink-2, oklch(0.30 0.02 260)); text-decoration: none; }
.art-toc a:hover { color: oklch(0.32 0.09 258); }

.art-prose { max-width: 740px; }
.art-prose p,
.art-prose li {
  font-family: var(--body);
  font-size: 18px;
  line-height: 1.7;
  color: var(--ink-2, oklch(0.30 0.02 260));
}
.art-prose p { margin: 0 0 22px; }
.art-prose h2 {
  font-family: var(--display);
  font-size: clamp(26px, 2.6vw, 32px);
  line-height: 1.18;
  margin: 48px 0 14px;
  letter-spacing: -0.005em;
  color: var(--ink);
}
.art-prose h3 {
  font-family: var(--display);
  font-size: 20px;
  line-height: 1.3;
  margin: 32px 0 10px;
  color: var(--ink);
}
.art-prose ul, .art-prose ol { margin: 0 0 22px; padding-left: 22px; }
.art-prose li { margin-bottom: 8px; }
.art-prose strong { color: var(--ink); font-weight: 700; }
.art-prose em { font-style: italic; }
.art-prose a { color: oklch(0.32 0.09 258); text-decoration: underline; text-underline-offset: 3px; }
.art-prose a:hover { color: oklch(0.22 0.07 258); }
.art-prose blockquote {
  border-left: 3px solid oklch(0.58 0.13 45);
  padding: 4px 0 4px 22px;
  margin: 28px 0;
  font-family: var(--display);
  font-size: 22px;
  line-height: 1.4;
  color: var(--ink);
  letter-spacing: -0.005em;
}
.art-prose .callout {
  background: oklch(0.97 0.02 80);
  border: 1px solid var(--rule);
  border-left: 4px solid oklch(0.32 0.09 258);
  padding: 22px 26px;
  margin: 32px 0;
}
.art-prose .callout .ctag {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.18em;
  text-transform: uppercase; font-weight: 700; color: oklch(0.32 0.09 258);
  margin-bottom: 8px;
}
.art-prose .callout p:last-child { margin-bottom: 0; }
.art-prose table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0 30px;
  font-family: var(--body);
  font-size: 15px;
}
.art-prose table th, .art-prose table td {
  border-bottom: 1px solid var(--rule);
  padding: 12px 12px;
  text-align: left;
  vertical-align: top;
}
.art-prose table th { font-weight: 700; color: var(--ink); font-family: var(--mono); font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase; }
.art-prose table tr:last-child td { border-bottom: none; }
.art-prose hr {
  border: 0;
  border-top: 1px solid var(--rule);
  margin: 40px 0;
}

.faq { margin: 40px 0; }
.faq h2 { margin-top: 0; }
.faq details {
  border-bottom: 1px solid var(--rule);
  padding: 18px 0;
}
.faq details[open] { padding-bottom: 22px; }
.faq summary {
  font-family: var(--display);
  font-size: 19px;
  line-height: 1.35;
  cursor: pointer;
  color: var(--ink);
  list-style: none;
  position: relative;
  padding-right: 28px;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+";
  position: absolute;
  right: 0; top: 0;
  font-family: var(--mono);
  color: oklch(0.50 0.02 260);
  font-size: 20px;
  font-weight: 400;
}
.faq details[open] summary::after { content: "−"; }
.faq .answer { padding-top: 12px; font-size: 17px; line-height: 1.65; color: var(--ink-2, oklch(0.30 0.02 260)); }
.faq .answer p { margin: 0 0 12px; }
.faq .answer p:last-child { margin: 0; }

.art-cta {
  background: oklch(0.32 0.09 258);
  color: var(--paper);
  padding: 40px 36px;
  margin: 48px 0 0;
  border-radius: 6px;
}
.art-cta .ctag { font-family: var(--mono); font-size: 11px; letter-spacing: 0.18em; text-transform: uppercase; font-weight: 700; color: oklch(0.85 0.13 60); margin-bottom: 12px; }
.art-cta h3 { font-family: var(--display); font-size: 26px; line-height: 1.2; margin: 0 0 12px; color: var(--paper); }
.art-cta p { color: oklch(0.92 0.02 80); margin: 0 0 22px; max-width: 560px; }
.art-cta .btn { display: inline-flex; }