.blog-hero {
  padding-bottom: 4px;
}

.tag-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 28px;
}

.tag-filter-btn {
  font-family: var(--f-body);
  font-size: 14px;
  font-weight: 600;
  color: var(--c-muted);
  background: var(--c-panel);
  border: 1px solid var(--c-border);
  border-radius: var(--r-md);
  padding: 9px 18px;
  cursor: pointer;
  transition: color .15s ease, background .15s ease, border-color .15s ease;
}

.tag-filter-btn:hover {
  color: var(--c-text);
}

.tag-filter-btn.is-active {
  color: var(--c-accent-dark);
  background: var(--tint-accent);
  border-color: var(--c-accent);
}

.post-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

@media (max-width: 980px) {
  .post-grid { grid-template-columns: repeat(2, 1fr); }
}

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

.post-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 22px;
  background: var(--c-panel);
  border: 1px solid var(--c-border);
  border-radius: var(--r-lg);
  box-shadow: var(--sh-win);
}

.post-top {
  display: flex;
  align-items: center;
  gap: 10px;
}

.post-date {
  font-family: var(--f-mono);
  font-size: 12px;
  color: var(--c-muted);
}

.post-tag {
  font-size: 12px;
  font-weight: 600;
  color: var(--c-accent-dark);
  background: var(--tint-accent);
  border-radius: var(--r-sm);
  padding: 3px 10px;
}

.post-title {
  font-size: 18px;
  font-weight: 700;
  line-height: 1.4;
}

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

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

.post-sum {
  font-size: 14px;
  color: var(--c-muted);
  line-height: 1.7;
  flex: 1;
}

.post-more {
  font-size: 14px;
  font-weight: 600;
  color: var(--c-accent-dark);
  text-decoration: none;
  align-self: flex-start;
}

.post-more:hover {
  text-decoration: underline;
}

.post-empty {
  font-size: 14px;
  color: var(--c-muted);
  padding: 40px 0;
  text-align: center;
}

.crumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--c-muted);
  margin-top: 1.4rem;
  padding-top: 0.2rem;
}

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

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

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

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

.post-hero {
  padding-bottom: 8px;
}

.post-hero-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}

.post-hero-date {
  font-family: var(--f-mono);
  font-size: 13px;
  color: var(--c-muted);
}

.post-hero-tag {
  font-size: 12px;
  font-weight: 600;
  color: var(--c-accent-dark);
  background: var(--tint-accent);
  border-radius: var(--r-sm);
  padding: 3px 10px;
}

.post-hero-read {
  font-size: 13px;
  color: var(--c-muted);
}

.post-hero-title {
  font-family: var(--f-display);
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 800;
  line-height: 1.3;
  color: var(--c-text);
  margin-bottom: 16px;
}

.post-hero-sum {
  font-size: 16px;
  line-height: 1.75;
  color: var(--c-muted);
  max-width: 720px;
}

.prose {
  font-size: 16px;
  line-height: 1.85;
  color: var(--c-text);
  max-width: 760px;
}

.prose h2 {
  font-family: var(--f-display);
  font-size: 26px;
  font-weight: 800;
  margin: 44px 0 16px;
  color: var(--c-text);
}

.prose h3 {
  font-family: var(--f-display);
  font-size: 20px;
  font-weight: 700;
  margin: 32px 0 12px;
  color: var(--c-text);
}

.prose p {
  margin: 0 0 18px;
}

.prose ul,
.prose ol {
  margin: 0 0 18px;
  padding-left: 22px;
}

.prose li {
  margin-bottom: 8px;
}

.prose code {
  font-family: var(--f-mono);
  font-size: 0.9em;
  background: var(--c-panel2);
  border-radius: 4px;
  padding: 2px 6px;
  color: var(--c-accent-dark);
}

.prose pre {
  background: var(--c-panel2);
  border: 1px solid var(--c-border);
  border-radius: var(--r-md);
  padding: 18px 20px;
  overflow-x: auto;
  margin: 0 0 22px;
}

.prose pre code {
  background: none;
  padding: 0;
  color: var(--c-text);
  font-size: 13px;
  line-height: 1.7;
}

.prose blockquote {
  border-left: 3px solid var(--c-accent);
  margin: 0 0 22px;
  padding: 4px 0 4px 18px;
  color: var(--c-muted);
}

.table-wrap {
  overflow-x: auto;
  margin: 0 0 22px;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.data-table th,
.data-table td {
  border: 1px solid var(--c-border);
  padding: 10px 14px;
  text-align: left;
}

.data-table th {
  background: var(--c-panel2);
  font-weight: 700;
}

.callout {
  background: var(--tint-accent);
  border-radius: var(--r-md);
  padding: 16px 20px;
  margin: 0 0 22px;
  max-width: 760px;
}

.callout-t {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  color: var(--c-accent-dark);
  margin-bottom: 6px;
}

.callout p {
  margin: 0;
  color: var(--c-text);
}

.callout-warn { background: var(--tint-warn); }
.callout-ok { background: var(--tint-ok); }
.callout-err { background: var(--tint-err); }

.cmd-box {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  background: var(--c-panel2);
  border: 1px solid var(--c-border);
  border-radius: var(--r-md);
  padding: 12px 16px;
  margin: 0 0 22px;
  max-width: 760px;
}

.cmd-box code {
  font-family: var(--f-mono);
  font-size: 13px;
  color: var(--c-text);
  background: none;
  padding: 0;
  overflow-x: auto;
  white-space: pre;
}

.cmd-copy {
  flex-shrink: 0;
  font-family: var(--f-body);
  font-size: 12px;
  font-weight: 600;
  color: var(--c-accent-dark);
  background: var(--c-panel);
  border: 1px solid var(--c-border);
  border-radius: var(--r-sm);
  padding: 6px 12px;
  cursor: pointer;
}

.cmd-copy:hover {
  border-color: var(--c-accent);
}

.dl-guide {
  margin-top: 56px;
  padding: 32px;
  background: var(--c-panel);
  border: 1px solid var(--c-border);
  border-radius: var(--r-lg);
  box-shadow: var(--sh-win);
  max-width: 760px;
}

.dl-guide-t {
  font-family: var(--f-display);
  font-size: 22px;
  font-weight: 800;
  margin: 0 0 8px;
  color: var(--c-text);
}

.dl-guide p {
  margin: 0 0 18px;
  color: var(--c-muted);
}

.dl-guide-btns {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.related-title {
  font-family: var(--f-display);
  font-size: 22px;
  font-weight: 800;
  margin: 56px 0 20px;
  color: var(--c-text);
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

@media (max-width: 900px) {
  .related-grid { grid-template-columns: 1fr; }
}

.related-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 18px;
  background: var(--c-panel);
  border: 1px solid var(--c-border);
  border-radius: var(--r-md);
}

.related-top {
  display: flex;
  align-items: center;
  gap: 8px;
}

.related-date {
  font-family: var(--f-mono);
  font-size: 12px;
  color: var(--c-muted);
}

.related-tag {
  font-size: 11px;
  font-weight: 600;
  color: var(--c-accent-dark);
  background: var(--tint-accent);
  border-radius: var(--r-sm);
  padding: 2px 8px;
}

.related-name {
  font-size: 15px;
  font-weight: 700;
  line-height: 1.4;
}

.related-name a {
  color: var(--c-text);
  text-decoration: none;
}

.related-name a:hover {
  color: var(--c-accent-dark);
}

.related-sum {
  font-size: 13px;
  color: var(--c-muted);
  line-height: 1.6;
}

.post-nav-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 28px;
}

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

.post-nav-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 18px;
  background: var(--c-panel);
  border: 1px solid var(--c-border);
  border-radius: var(--r-md);
  text-decoration: none;
  transition: border-color .15s ease;
}

.post-nav-card:hover {
  border-color: var(--c-accent);
}

.post-nav-next {
  text-align: right;
}

.post-nav-dir {
  font-size: 12px;
  font-weight: 600;
  color: var(--c-muted);
}

.post-nav-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--c-text);
}

.post-nav-spacer {
  display: block;
}

.dl-fab {
  position: fixed;
  right: 24px;
  bottom: 24px;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 20px;
  background: var(--c-accent);
  color: var(--c-panel);
  font-size: 14px;
  font-weight: 700;
  border-radius: var(--r-md);
  text-decoration: none;
  box-shadow: var(--sh-btn);
  z-index: 500;
}

.dl-fab svg {
  width: 18px;
  height: 18px;
}