.crumbs {
  margin-top: 1.6rem;
  padding-top: .2rem;
  display: flex;
  align-items: center;
  gap: .5rem;
  font-size: .875rem;
  color: var(--fog-ink-soft);
}

.crumbs.crumbs-spaced {
  margin-top: 2rem;
  padding-top: 1rem;
}

.crumbs a {
  color: var(--fog-ink-soft);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .15s ease, border-color .15s ease;
}

.crumbs a:hover {
  color: var(--fog-deep);
  border-bottom-color: var(--fog-deep);
}

.crumbs [aria-current="page"] {
  color: var(--fog-ink);
}

.bloghero .sect-head {
  margin-bottom: 1.6rem;
}

.blogfilter {
  display: flex;
  flex-wrap: wrap;
  gap: .6rem;
  margin-bottom: 2rem;
}

.blogfilter-btn {
  padding: .5rem 1.1rem;
  border-radius: var(--radius-pill);
  border: 1px solid var(--fog-line);
  background: var(--fog-glass);
  color: var(--fog-ink-soft);
  font-family: var(--font-body);
  font-size: .875rem;
  cursor: pointer;
  transition: background .15s ease, color .15s ease, border-color .15s ease;
}

.blogfilter-btn:hover {
  border-color: var(--fog-accent);
  color: var(--fog-ink);
}

.blogfilter-btn.is-active {
  background: var(--fog-deep);
  border-color: var(--fog-deep);
  color: var(--fog-paper);
}

.postgrid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.25rem;
}

.postgrid-empty {
  color: var(--fog-ink-soft);
  padding: 2rem 0;
}

@media (max-width: 760px) {
  .postgrid {
    grid-template-columns: 1fr;
  }
}

.postcard {
  display: flex;
  flex-direction: column;
  gap: .7rem;
  padding: 1.4rem;
  border: 1px solid var(--fog-line);
  border-radius: var(--radius-m);
  background: var(--fog-glass);
  backdrop-filter: blur(6px);
  box-shadow: var(--shadow-mist);
  min-width: 0;
}

.postcard-meta {
  display: flex;
  align-items: center;
  gap: .6rem;
  font-size: .8rem;
  color: var(--fog-ink-soft);
}

.postcard-date {
  font-family: var(--font-mono);
}

.postcard-tag {
  padding: .15rem .6rem;
  border-radius: var(--radius-pill);
  background: var(--fog-panel-2);
  color: var(--fog-accent);
  font-size: .75rem;
}

.postcard-title {
  font-size: 1.05rem;
  line-height: 1.5;
  margin: 0;
}

.postcard-title a {
  color: var(--fog-ink);
  text-decoration: none;
}

.postcard-title a:hover {
  color: var(--fog-deep);
}

.postcard-summary {
  color: var(--fog-ink-soft);
  font-size: .9rem;
  line-height: 1.7;
  margin: 0;
  flex: 1;
}

.postcard-more {
  align-self: flex-start;
  color: var(--fog-deep);
  font-size: .875rem;
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.postcard-more:hover {
  border-bottom-color: var(--fog-deep);
}

/* 文章页正文排版 */
.posthero {
  padding-bottom: 1rem;
}

.posthero-meta {
  display: flex;
  align-items: center;
  gap: .8rem;
  font-size: .85rem;
  color: var(--fog-ink-soft);
  margin-bottom: .9rem;
}

.posthero-date {
  font-family: var(--font-mono);
}

.posthero-tag {
  padding: .15rem .6rem;
  border-radius: var(--radius-pill);
  background: var(--fog-panel-2);
  color: var(--fog-accent);
  font-size: .75rem;
}

.posthero-read {
  color: var(--fog-ink-soft);
}

.posthero h1 {
  font-size: clamp(1.6rem, 3vw, 2.1rem);
  line-height: 1.4;
  margin: 0 0 .9rem;
}

.posthero-summary {
  color: var(--fog-ink-soft);
  font-size: 1rem;
  line-height: 1.8;
  max-width: 760px;
}

.postbody {
  max-width: 760px;
}

.postbody h2 {
  font-size: 1.35rem;
  margin: 2.4rem 0 1rem;
  line-height: 1.5;
}

.postbody h3 {
  font-size: 1.1rem;
  margin: 1.8rem 0 .8rem;
  line-height: 1.5;
}

.postbody p {
  line-height: 1.85;
  margin: 0 0 1.1rem;
  color: var(--fog-ink);
}

.postbody ul,
.postbody ol {
  line-height: 1.85;
  margin: 0 0 1.2rem;
  padding-left: 1.4rem;
  color: var(--fog-ink);
}

.postbody li {
  margin-bottom: .5rem;
}

.postbody blockquote {
  margin: 1.4rem 0;
  padding: .9rem 1.2rem;
  border-left: 3px solid var(--fog-accent);
  background: var(--fog-panel-2);
  border-radius: var(--radius-s);
  color: var(--fog-ink-soft);
}

.postbody pre {
  margin: 0 0 1.3rem;
  padding: 1rem 1.1rem;
  background: var(--fog-panel);
  border: 1px solid var(--fog-line);
  border-radius: var(--radius-m);
  overflow-x: auto;
}

.postbody code {
  font-family: var(--font-mono);
  font-size: .875rem;
}

.postbody p code {
  padding: .1rem .35rem;
  background: var(--fog-panel-2);
  border-radius: var(--radius-xs);
}

/* 文末下载引导卡 */
.endcta {
  padding: 2rem;
  border: 1px solid var(--fog-line);
  border-radius: var(--radius-l);
  background: var(--fog-glass);
  backdrop-filter: blur(6px);
  box-shadow: var(--shadow-mist);
  text-align: center;
  max-width: 760px;
  margin: 0 auto;
}

.endcta h2 {
  margin: 0 0 .6rem;
  font-size: 1.3rem;
}

.endcta p {
  margin: 0 0 1.3rem;
  color: var(--fog-ink-soft);
}

.endcta-acts {
  display: flex;
  justify-content: center;
  gap: .8rem;
  flex-wrap: wrap;
}

/* 延伸阅读 */
.related-title {
  font-size: 1.2rem;
  margin: 0 0 1.2rem;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

@media (max-width: 880px) {
  .related-grid {
    grid-template-columns: 1fr;
  }
}

.related-card {
  padding: 1.1rem;
  border: 1px solid var(--fog-line);
  border-radius: var(--radius-m);
  background: var(--fog-glass);
  min-width: 0;
}

.related-card-meta {
  display: flex;
  gap: .5rem;
  align-items: center;
  font-size: .75rem;
  color: var(--fog-ink-soft);
  margin-bottom: .5rem;
}

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

.related-card-tag {
  padding: .1rem .5rem;
  border-radius: var(--radius-pill);
  background: var(--fog-panel-2);
  color: var(--fog-accent);
}

.related-card-title {
  font-size: .95rem;
  margin: 0 0 .5rem;
  line-height: 1.5;
}

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

.related-card-title a:hover {
  color: var(--fog-deep);
}

.related-card-summary {
  font-size: .85rem;
  line-height: 1.6;
  color: var(--fog-ink-soft);
  margin: 0;
}

/* 上一篇/下一篇 */
.postnav {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

@media (max-width: 640px) {
  .postnav {
    grid-template-columns: 1fr;
  }
}

.postnav-item {
  display: flex;
  flex-direction: column;
  gap: .4rem;
  padding: 1.1rem 1.2rem;
  border: 1px solid var(--fog-line);
  border-radius: var(--radius-m);
  background: var(--fog-glass);
  text-decoration: none;
  min-width: 0;
}

.postnav-next {
  text-align: right;
}

.postnav-empty {
  border: none;
  background: transparent;
}

.postnav-dir {
  font-size: .8rem;
  color: var(--fog-accent);
}

.postnav-title {
  font-size: .9rem;
  color: var(--fog-ink);
  line-height: 1.5;
}

.postnav-item:hover .postnav-title {
  color: var(--fog-deep);
}