/* ── Kredo Diagnostics — Blog styles ─────────────────────── */

/* Breadcrumb */
.breadcrumb {
  padding: 1.2rem 8vw 0;
  font-size: 0.78rem;
  color: var(--stone);
}
.breadcrumb ol {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
}
.breadcrumb li + li::before {
  content: "›";
  margin-right: 0.3rem;
  color: var(--line);
}
.breadcrumb a {
  color: var(--stone);
  text-decoration: underline;
  text-underline-offset: 2px;
}
.breadcrumb a:hover { color: var(--ink); }

/* Article layout */
.article-main {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 8vw 6rem;
}

.article-body {
  padding-top: 2.4rem;
}

.article-body h1 {
  font-size: clamp(1.8rem, 3vw, 2.8rem);
  line-height: 1.15;
  margin: 1rem 0 1.4rem;
}

.article-body h2 {
  font-size: 1.25rem;
  font-weight: 600;
  margin: 2.4rem 0 0.8rem;
  color: var(--graphite);
}

.article-body h3 {
  font-size: 1rem;
  font-weight: 600;
  margin: 1.6rem 0 0.6rem;
  color: var(--graphite);
}

.article-body p {
  margin: 0 0 1.2rem;
  color: var(--graphite);
  line-height: 1.75;
}

.article-body ul, .article-body ol {
  margin: 0 0 1.2rem 1.4rem;
  color: var(--graphite);
  line-height: 1.75;
}

.article-body li { margin-bottom: 0.4rem; }

.article-lead {
  font-size: 1.05rem;
  color: var(--graphite);
  margin-bottom: 1rem;
  line-height: 1.6;
}

.article-meta {
  font-size: 0.78rem;
  color: var(--stone);
  margin-bottom: 2rem;
  letter-spacing: 0.05em;
}

/* TL;DR box */
.tldr-box {
  border-left: 3px solid var(--ink);
  background: rgba(18,18,18,0.04);
  padding: 1.2rem 1.4rem;
  margin: 1.6rem 0 2.4rem;
  border-radius: 0 8px 8px 0;
}

.tldr-label {
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-weight: 600;
  color: var(--stone);
  margin-bottom: 0.6rem !important;
}

.tldr-box p:not(.tldr-label) {
  font-size: 0.95rem;
  color: var(--ink) !important;
  font-weight: 500;
  margin: 0 !important;
  line-height: 1.6;
}

/* FAQ section */
.faq-section {
  border-top: 1px solid var(--line);
  margin-top: 3rem;
  padding-top: 2rem;
}

.faq-section h2 {
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 1.4rem;
  color: var(--ink);
}

.faq-item {
  border-bottom: 1px solid var(--line);
  padding: 1rem 0;
}

.faq-item summary {
  cursor: pointer;
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--ink);
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

.faq-item summary::-webkit-details-marker { display: none; }

.faq-item summary::after {
  content: "+";
  font-size: 1.2rem;
  font-weight: 300;
  flex-shrink: 0;
  transition: transform 0.2s ease;
}

.faq-item[open] summary::after {
  transform: rotate(45deg);
}

.faq-item p {
  margin-top: 0.8rem;
  font-size: 0.9rem;
  color: var(--graphite);
  line-height: 1.7;
}

/* CTA section */
.article-cta {
  background: var(--ink);
  color: var(--paper);
  padding: 3rem;
  border-radius: 16px;
  margin-top: 3.5rem;
}

.article-cta .eyebrow {
  color: rgba(240,240,240,0.5);
}

.article-cta h2 {
  font-size: 1.5rem;
  color: var(--paper);
  margin: 0.8rem 0 1rem;
}

.article-cta p {
  color: rgba(240,240,240,0.75);
  font-size: 0.95rem;
  line-height: 1.65;
  max-width: 36rem;
}

.article-cta .button.primary {
  background: var(--paper);
  color: var(--ink);
  border-color: var(--paper);
}

.article-cta .button.ghost {
  border-color: rgba(240,240,240,0.4);
  color: var(--paper);
}

/* Cluster hub */
.cluster-hub .article-lead { max-width: 56ch; }

.cluster-articles {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--line);
}

.cluster-articles h2 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 1.6rem;
  color: var(--ink);
}

.cluster-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1rem;
}

.cluster-card {
  display: block;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 1.2rem 1.4rem;
  transition: border-color 0.2s ease, transform 0.2s ease;
  background: var(--paper);
}

.cluster-card:hover {
  border-color: var(--ink);
  transform: translateY(-2px);
}

.cluster-card-title {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--ink);
  margin-bottom: 0.5rem !important;
  line-height: 1.4;
}

.cluster-card-desc {
  font-size: 0.82rem;
  color: var(--stone);
  margin-bottom: 0.8rem !important;
  line-height: 1.5;
}

.cluster-card-link {
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--ink);
  letter-spacing: 0.04em;
}

/* Blog index sections */
.blog-hero {
  padding-top: 2.4rem;
  margin-bottom: 3rem;
}

.blog-hero h1 {
  font-size: clamp(2rem, 3.5vw, 3rem);
  margin: 0.8rem 0 1rem;
}

.cluster-section {
  border-top: 1px solid var(--line);
  padding: 2.4rem 0;
}

.cluster-section h2 {
  font-size: 1.3rem;
  font-weight: 600;
  margin-bottom: 0.7rem;
}

.cluster-section p {
  color: var(--graphite);
  max-width: 42rem;
  margin-bottom: 1.4rem;
  font-size: 0.95rem;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--line);
  padding: 2.5rem 8vw;
  margin-top: 4rem;
}

.footer-inner {
  display: flex;
  align-items: center;
  gap: 2rem;
  flex-wrap: wrap;
}

.footer-links {
  display: flex;
  gap: 1.4rem;
  font-size: 0.8rem;
  color: var(--stone);
}

.footer-links a:hover { color: var(--ink); }

.footer-copy {
  margin-left: auto;
  font-size: 0.78rem;
  color: var(--stone);
}

/* Mobile */
@media (max-width: 640px) {
  .article-main { padding: 0 6vw 4rem; }
  .article-cta { padding: 2rem 1.4rem; }
  .cluster-grid { grid-template-columns: 1fr; }
  .footer-inner { flex-direction: column; align-items: flex-start; gap: 1rem; }
  .footer-copy { margin-left: 0; }
}