/* ════════════════════════════════════════════════════════════════════
   COLLECTION INDEX — /guide/ and /insights/
   The hub page for a content cluster. Reuses the legal shell for nav and
   footer; the body is a card grid linking into the long-tail articles.
   ════════════════════════════════════════════════════════════════════ */

.coll-body {
  background: var(--ink-1000);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.coll {
  flex: 1;
  padding: clamp(2.5rem, 6vw, 5rem) var(--gutter) clamp(3rem, 7vw, 6rem);
}
.coll__inner {
  max-width: 68rem;
  margin-inline: auto;
}

.coll__eyebrow {
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--signal-500);
  margin-bottom: var(--space-4);
}
.coll__title {
  font-size: clamp(1.9rem, 4.5vw, 3rem);
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: var(--bone-100);
  margin-bottom: var(--space-5);
  text-wrap: balance;
}
.coll__lead {
  max-width: 62ch;
  font-size: clamp(1.02rem, 1.7vw, 1.18rem);
  line-height: 1.65;
  color: var(--steel-200);
  margin-bottom: var(--space-6);
  text-wrap: pretty;
}
.coll__intro {
  max-width: 62ch;
  font-size: 0.93rem;
  line-height: 1.72;
  color: var(--steel-300);
  padding-block-start: var(--space-6);
  border-top: 1px solid var(--line);
  margin-bottom: var(--space-7);
  text-wrap: pretty;
}

/* ─── Card grid ──────────────────────────────────────────────────── */
.coll__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 22rem), 1fr));
  gap: var(--space-5);
  list-style: none;
}
.coll__card {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  height: 100%;
  background: var(--ink-900);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  padding: var(--space-5);
  text-decoration: none;
  transition: border-color var(--dur-fast), transform var(--dur-fast);
}
.coll__card:hover {
  border-color: var(--line-strong);
  transform: translateY(-2px);
}
.coll__cat {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--steel-400);
}
.coll__card h2 {
  font-size: 1.02rem;
  line-height: 1.38;
  letter-spacing: -0.01em;
  color: var(--bone-100);
  text-wrap: pretty;
}
.coll__card p {
  font-size: 0.89rem;
  line-height: 1.68;
  color: var(--steel-300);
  text-wrap: pretty;
}
.coll__more {
  margin-block-start: auto;
  padding-block-start: var(--space-3);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--signal-500);
}

/* ─── Footer CTA ─────────────────────────────────────────────────── */
.coll__cta {
  margin-block-start: clamp(2.5rem, 5vw, 4rem);
  padding: var(--space-6);
  background: var(--ink-900);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-m);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-5);
}
.coll__cta p {
  flex: 1 1 22rem;
  font-size: 0.93rem;
  line-height: 1.7;
  color: var(--steel-300);
  text-wrap: pretty;
}
.coll__cta a {
  display: inline-block;
  padding: var(--space-3) var(--space-6);
  background: var(--signal-500);
  color: var(--ink-1000);
  border-radius: var(--radius-s);
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  white-space: nowrap;
  transition: filter var(--dur-fast);
}
.coll__cta a:hover { filter: brightness(1.12); }