.crumbs {
  margin-top: 1.4rem;
  padding-top: 1.2rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.9rem;
  color: var(--c-ink-soft);
  flex-wrap: wrap;
}

.crumbs a {
  color: var(--c-ink-soft);
  text-decoration: none;
}

.crumbs a:hover {
  color: var(--c-accent);
}

.crumbs-sep {
  color: var(--c-hairline);
}

.crumbs-cur {
  color: var(--c-ink);
}

.tag-filter {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
  margin-bottom: 2rem;
}

.tag-filter button {
  border: 1px solid var(--c-hairline);
  background: var(--c-page);
  color: var(--c-ink-soft);
  border-radius: var(--r-pill);
  padding: 0.5rem 1.1rem;
  font-size: 0.9rem;
  font-family: var(--ff-body);
  cursor: pointer;
  transition: border-color 0.15s ease, color 0.15s ease, background 0.15s ease;
}

.tag-filter button:hover {
  border-color: var(--c-accent);
  color: var(--c-accent);
}

.tag-filter button.on {
  background: var(--c-accent);
  border-color: var(--c-accent);
  color: var(--c-onaccent);
}

.post-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
}

.post-card {
  background: var(--c-page);
  border: 1px solid var(--c-hairline);
  border-radius: var(--r-card);
  padding: 1.6rem;
  box-shadow: var(--elev-1);
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
  min-width: 0;
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.post-card:hover {
  box-shadow: var(--elev-2);
  transform: translateY(-2px);
}

.post-card-meta {
  display: flex;
  gap: 0.7rem;
  align-items: center;
  font-size: 0.82rem;
  color: var(--c-ink-soft);
}

.post-card-date {
  font-family: var(--ff-mono);
}

.post-card-tag {
  background: var(--tint-accent);
  color: var(--c-accent);
  border-radius: var(--r-xs);
  padding: 0.15rem 0.55rem;
  font-size: 0.78rem;
}

.post-card-title {
  font-size: 1.15rem;
  font-weight: 700;
  line-height: 1.5;
  margin: 0;
}

.post-card-title a {
  color: var(--c-ink);
  text-decoration: none;
}

.post-card-title a:hover {
  color: var(--c-accent);
}

.post-card-sum {
  color: var(--c-ink-soft);
  font-size: 0.94rem;
  line-height: 1.8;
  margin: 0;
}

.article-hero {
  padding-top: 0.4rem;
}

.article-hero-meta {
  display: flex;
  gap: 0.8rem;
  align-items: center;
  font-size: 0.88rem;
  color: var(--c-ink-soft);
  margin-bottom: 1rem;
}

.article-hero-meta .post-card-date {
  font-family: var(--ff-mono);
}

.article-hero-meta .post-card-tag {
  background: var(--tint-accent);
  color: var(--c-accent);
  border-radius: var(--r-xs);
  padding: 0.15rem 0.55rem;
  font-size: 0.78rem;
}

.article-hero h1 {
  font-size: clamp(1.9rem, 4vw, 2.7rem);
  font-weight: 800;
  line-height: 1.3;
  margin: 0 0 1rem;
}

.article-hero-sum {
  color: var(--c-ink-soft);
  font-size: 1.05rem;
  line-height: 1.9;
  max-width: var(--read-w);
}

.prose {
  max-width: var(--read-w);
  margin: 0 auto;
  line-height: var(--lh-body);
  color: var(--c-ink);
}

.prose h2 {
  font-size: 1.5rem;
  font-weight: 800;
  margin: 2.4rem 0 1rem;
}

.prose h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin: 1.8rem 0 0.8rem;
}

.prose p {
  margin: 0 0 1.2rem;
  color: var(--c-ink);
}

.prose ul, .prose ol {
  margin: 0 0 1.2rem;
  padding-left: 1.4rem;
}

.prose li {
  margin-bottom: 0.5rem;
}

.prose pre {
  background: var(--c-mica-2);
  border-radius: var(--r-card);
  padding: 1.2rem;
  overflow-x: auto;
  margin: 0 0 1.4rem;
  font-family: var(--ff-mono);
  font-size: 0.88rem;
  line-height: 1.7;
}

.prose code {
  font-family: var(--ff-mono);
  font-size: 0.9em;
  background: var(--c-mica-2);
  padding: 0.15em 0.4em;
  border-radius: var(--r-xs);
}

.prose pre code {
  background: none;
  padding: 0;
}

.prose blockquote {
  border-left: 3px solid var(--c-accent);
  margin: 0 0 1.4rem;
  padding: 0.4rem 0 0.4rem 1.2rem;
  color: var(--c-ink-soft);
}

.endcap {
  max-width: var(--read-w);
  margin: 3rem auto 0;
  background: var(--c-mica);
  border-radius: var(--r-win);
  padding: 2.2rem;
  text-align: center;
  box-shadow: var(--elev-1);
}

.endcap h2 {
  font-size: 1.4rem;
  font-weight: 800;
  margin: 0 0 0.8rem;
}

.endcap p {
  color: var(--c-ink-soft);
  margin: 0 0 1.4rem;
  line-height: 1.8;
}

.related-heading {
  font-size: 1.3rem;
  font-weight: 800;
  margin: 0 0 1.4rem;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1.2rem;
}

.related-card {
  display: block;
  background: var(--c-page);
  border: 1px solid var(--c-hairline);
  border-radius: var(--r-card);
  padding: 1.2rem;
  text-decoration: none;
  color: var(--c-ink);
  box-shadow: var(--elev-1);
  transition: box-shadow 0.2s ease, transform 0.2s ease;
  min-width: 0;
}

.related-card:hover {
  box-shadow: var(--elev-2);
  transform: translateY(-2px);
}

.related-card-meta {
  display: flex;
  gap: 0.6rem;
  font-size: 0.78rem;
  color: var(--c-ink-soft);
  margin-bottom: 0.5rem;
  font-family: var(--ff-mono);
}

.related-card h3 {
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.5;
  margin: 0;
}

.post-nav {
  max-width: var(--read-w);
  margin: 2.4rem auto 0;
  display: flex;
  justify-content: space-between;
  gap: 1.2rem;
  flex-wrap: wrap;
}

.post-nav-link {
  flex: 1;
  min-width: 220px;
  background: var(--c-page);
  border: 1px solid var(--c-hairline);
  border-radius: var(--r-card);
  padding: 1.1rem 1.3rem;
  text-decoration: none;
  color: var(--c-ink);
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  box-shadow: var(--elev-1);
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.post-nav-link:hover {
  box-shadow: var(--elev-2);
  transform: translateY(-2px);
}

.post-nav-link.to-next {
  text-align: right;
  align-items: flex-end;
}

.post-nav-link .dir {
  font-size: 0.78rem;
  color: var(--c-accent);
  font-weight: 600;
}

.post-nav-title {
  font-size: 0.96rem;
  font-weight: 700;
  line-height: 1.5;
}

.post-nav-spacer {
  flex: 1;
  min-width: 220px;
}

.dl-fab {
  position: fixed;
  right: 1.6rem;
  bottom: 1.6rem;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--c-accent);
  color: var(--c-onaccent);
  border-radius: var(--r-pill);
  padding: 0.85rem 1.3rem;
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 600;
  box-shadow: var(--elev-accent);
  z-index: 40;
  transition: background 0.15s ease, transform 0.15s ease;
}

.dl-fab:hover {
  background: var(--c-accent-press);
  transform: translateY(-2px);
}