/* VERSION 147: Insights and cornerstone article architecture */
.insights-hero .hero-grid { grid-template-columns: minmax(0, 1fr); }
.insights-hero .lead { max-width: 780px; }
.insights-intro { max-width: 820px; }
.cluster-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1rem; margin-top: 2rem; }
.cluster-card { background: #fff; border: 1px solid rgba(48,48,47,.13); border-radius: 16px; padding: 1.35rem; min-height: 205px; box-shadow: 0 12px 30px rgba(24,42,61,.05); }
.cluster-card .cluster-number { display: inline-flex; align-items: center; justify-content: center; width: 2rem; height: 2rem; border-radius: 999px; background: #eaf5fb; color: #176b9c; font-weight: 800; font-size: .82rem; margin-bottom: .8rem; }
.cluster-card h3 { margin: 0 0 .55rem; font-size: 1.08rem; }
.cluster-card p { margin: 0 0 .9rem; color: #555; }
.cluster-card a { font-weight: 750; }
.cornerstone-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1.2rem; margin-top: 2rem; }
.article-card { display: flex; flex-direction: column; background: #fff; border: 1px solid rgba(48,48,47,.14); border-radius: 18px; padding: 1.5rem; min-height: 320px; box-shadow: 0 14px 34px rgba(24,42,61,.06); }
.article-card .article-cluster { color: #176b9c; font-size: .78rem; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
.article-card h3 { margin: .75rem 0; font-size: 1.28rem; line-height: 1.25; }
.article-card p { color: #555; }
.article-card .article-card-meta { margin-top: auto; padding-top: 1rem; border-top: 1px solid rgba(48,48,47,.1); font-size: .86rem; color: #666; }
.article-card .text-link { margin-top: .8rem; }
.resource-strip { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; }
.resource-strip article { background: #f7fbfd; border: 1px solid rgba(23,107,156,.16); border-radius: 14px; padding: 1.25rem; }

.article-hero { padding-bottom: 3.6rem; }
.article-hero .container { max-width: 980px; }
.article-hero h1 { max-width: 900px; }
.article-hero .lead { max-width: 820px; }
.article-meta { display: flex; flex-wrap: wrap; gap: .6rem 1.25rem; margin-top: 1.4rem; color: rgba(255,255,255,.82); font-size: .92rem; }
.article-meta span { display: inline-flex; align-items: center; }
.article-meta span + span::before { content: ''; width: 4px; height: 4px; border-radius: 50%; background: #74c4ee; margin-right: 1.25rem; }
.article-layout { display: grid; grid-template-columns: minmax(0, 760px) minmax(220px, 290px); gap: 3.5rem; align-items: start; }
.article-body { min-width: 0; }
.article-body > :first-child { margin-top: 0; }
.article-body h2 { margin-top: 2.7rem; font-size: clamp(1.55rem, 2.4vw, 2rem); }
.article-body h3 { margin-top: 1.7rem; font-size: 1.2rem; }
.article-body p, .article-body li { line-height: 1.72; }
.article-body ul, .article-body ol { padding-left: 1.3rem; }
.article-body li + li { margin-top: .55rem; }
.executive-answer { background: #eaf5fb; border-left: 5px solid #2398d1; border-radius: 12px; padding: 1.5rem 1.6rem; margin-bottom: 2.3rem; }
.executive-answer h2 { margin: 0 0 .6rem; font-size: 1.25rem; }
.executive-answer p { margin: 0; }
.definition-box { background: #f7f7f6; border: 1px solid rgba(48,48,47,.12); border-radius: 14px; padding: 1.25rem 1.4rem; }
.definition-box dl { margin: 0; }
.definition-box dt { font-weight: 800; margin-top: .9rem; }
.definition-box dt:first-child { margin-top: 0; }
.definition-box dd { margin: .25rem 0 0; color: #555; }
.diagnostic-questions { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .8rem; margin: 1.2rem 0; padding: 0; list-style: none; }
.diagnostic-questions li { border: 1px solid rgba(48,48,47,.12); border-radius: 12px; padding: 1rem; background: #fff; margin: 0; }
.framework-steps { display: grid; gap: .85rem; margin: 1.25rem 0; }
.framework-step { display: grid; grid-template-columns: 44px 1fr; gap: 1rem; align-items: start; border: 1px solid rgba(48,48,47,.12); border-radius: 14px; padding: 1.1rem; }
.framework-step > span { display: flex; align-items: center; justify-content: center; width: 44px; height: 44px; border-radius: 50%; background: #176b9c; color: #fff; font-weight: 800; }
.framework-step h3 { margin: 0 0 .25rem; }
.framework-step p { margin: 0; color: #555; }
.decision-table-wrap { overflow-x: auto; margin: 1.25rem 0; }
.decision-table { width: 100%; border-collapse: collapse; min-width: 620px; }
.decision-table th, .decision-table td { text-align: left; vertical-align: top; border: 1px solid rgba(48,48,47,.14); padding: .85rem; }
.decision-table th { background: #eaf5fb; }
.experience-note { background: #30302f; color: #fff; border-radius: 16px; padding: 1.45rem; margin: 2rem 0; }
.experience-note h2, .experience-note h3 { margin-top: 0; color: #fff; }
.experience-note p { color: rgba(255,255,255,.86); }
.experience-note a { color: #9fddff; }
.article-aside { position: sticky; top: 110px; }
.article-aside .aside-card { border: 1px solid rgba(48,48,47,.13); border-radius: 14px; padding: 1.2rem; background: #fff; margin-bottom: 1rem; }
.article-aside h2 { margin: 0 0 .8rem; font-size: 1rem; }
.article-aside nav a { display: block; padding: .42rem 0; color: #444; font-size: .92rem; border-bottom: 1px solid rgba(48,48,47,.08); }
.article-aside nav a:last-child { border-bottom: 0; }
.author-box { display: grid; gap: .35rem; }
.author-box strong { font-size: 1rem; }
.author-box span { color: #555; font-size: .9rem; }
.source-list { padding-left: 1.2rem; }
.source-list li { overflow-wrap: anywhere; }
.source-list a { font-weight: 650; }
.related-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .8rem; }
.related-grid a { display: block; border: 1px solid rgba(48,48,47,.12); border-radius: 12px; padding: 1rem; font-weight: 750; background: #fff; }
.article-end-note { border-top: 1px solid rgba(48,48,47,.14); margin-top: 2.6rem; padding-top: 1.5rem; color: #555; }
.article-end-actions { display: flex; flex-wrap: wrap; gap: .75rem; margin-top: 1.25rem; }

@media (max-width: 1050px) {
  .cluster-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .article-layout { grid-template-columns: minmax(0, 1fr); gap: 2rem; }
  .article-aside { position: static; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; }
  .article-aside .aside-card { margin: 0; }
}
@media (max-width: 760px) {
  .cornerstone-grid, .resource-strip { grid-template-columns: 1fr; }
  .diagnostic-questions { grid-template-columns: 1fr; }
  .article-aside { grid-template-columns: 1fr; }
  .article-meta { display: grid; gap: .35rem; }
  .article-meta span + span::before { display: none; }
}
@media (max-width: 520px) {
  .cluster-grid, .related-grid { grid-template-columns: 1fr; }
  .cluster-card { min-height: auto; }
  .article-card { min-height: auto; }
  .framework-step { grid-template-columns: 38px 1fr; }
  .framework-step > span { width: 38px; height: 38px; }
}