.tag-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.tag-btn {
  border: var(--line) solid var(--ink);
  background: var(--panel);
  color: var(--ink);
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 0.92rem;
  padding: 9px 18px;
  cursor: pointer;
}

.tag-btn:hover {
  background: var(--panel-2);
}

.tag-btn.is-active {
  background: var(--accent);
  color: var(--ink);
  border-color: var(--ink);
}

.post-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}

.post-card {
  border: var(--line) solid var(--ink);
  background: var(--panel);
  padding: 22px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.post-card.shown {
  opacity: 1;
  transform: translateY(0);
}

.post-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--ink-soft);
}

.post-meta time {
  font-family: var(--font-mono);
}

.post-tag {
  border: 2px solid var(--ink);
  background: var(--panel-2);
  padding: 2px 8px;
  font-size: 0.78rem;
  font-weight: 700;
}

.post-title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.18rem;
  line-height: 1.4;
  margin: 0;
}

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

.post-title a:hover {
  text-decoration: underline;
}

.post-sum {
  color: var(--ink-soft);
  font-size: 0.94rem;
  line-height: 1.7;
  margin: 0;
  flex: 1;
}

.post-more {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--accent-deep);
  font-size: 0.88rem;
}

.post-empty {
  text-align: center;
  color: var(--ink-soft);
  padding: 40px 0;
  font-size: 0.98rem;
}

.crumbs {
  margin-top: 1.4rem;
  padding-top: 0.2rem;
  display: flex;
  gap: 8px;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.86rem;
  color: var(--ink-soft);
  flex-wrap: wrap;
}

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

.crumbs a:hover {
  color: var(--ink);
  text-decoration: underline;
}

.crumbs .sep {
  color: var(--ink-soft);
}

.crumbs span:last-child {
  color: var(--ink);
  font-weight: 700;
}

.post-hero {
  padding-top: 18px;
}

.post-hero-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 0.86rem;
  color: var(--ink-soft);
  margin-bottom: 14px;
  flex-wrap: wrap;
}

.post-hero-meta .post-tag {
  background: var(--panel);
}

.post-hero h1 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.7rem, 4vw, 2.6rem);
  line-height: 1.3;
  margin: 0 0 14px;
}

.post-hero-lead {
  font-size: 1.04rem;
  line-height: 1.8;
  color: var(--ink-soft);
  max-width: 760px;
  margin: 0;
}

.prose {
  max-width: 760px;
  line-height: 1.85;
  font-size: 1.02rem;
}

.prose h2 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.5rem;
  margin: 2.4em 0 0.8em;
  padding-top: 0.4em;
  border-top: var(--line) dashed var(--ink);
}

.prose h2:first-child {
  border-top: none;
  margin-top: 0;
}

.prose h3 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.18rem;
  margin: 1.8em 0 0.6em;
}

.prose p {
  margin: 0 0 1.1em;
  color: var(--text);
}

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

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

.prose blockquote {
  border-left: 4px solid var(--accent);
  margin: 1.6em 0;
  padding: 0.6em 1.2em;
  background: var(--panel);
  color: var(--ink-soft);
}

.prose pre {
  border: var(--line) solid var(--ink);
  background: var(--panel-2);
  padding: 16px;
  overflow-x: auto;
  margin: 1.4em 0;
}

.prose code {
  font-family: var(--font-mono);
  font-size: 0.9em;
}

.prose pre code {
  font-family: var(--font-mono);
  line-height: 1.6;
}

.prose p code,
.prose li code {
  background: var(--panel-2);
  border: 2px solid var(--ink);
  padding: 1px 6px;
}

.dl-guide {
  border: var(--line) solid var(--ink);
  background: var(--panel);
  padding: 28px;
  margin: 3em 0 2.4em;
  max-width: 760px;
}

.dl-guide-cap {
  font-family: var(--font-mono);
  color: var(--accent-deep);
  font-weight: 700;
  font-size: 0.86rem;
  margin: 0 0 8px;
}

.dl-guide-title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.4rem;
  margin: 0 0 10px;
}

.dl-guide p:not(.dl-guide-cap):not(.dl-guide-title) {
  color: var(--ink-soft);
  margin: 0 0 18px;
}

.dl-guide-btns {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.sec-title-sm {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.4rem;
  margin: 0 0 20px;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
  max-width: 900px;
}

#post-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  max-width: 900px;
  margin: 2em 0 3em;
}

.nav-card {
  border: var(--line) solid var(--ink);
  background: var(--panel);
  padding: 18px 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  text-decoration: none;
  color: var(--ink);
}

.nav-card:hover {
  background: var(--panel-2);
}

.nav-next {
  text-align: right;
  grid-column: 2;
}

.nav-cap {
  font-family: var(--font-mono);
  color: var(--accent-deep);
  font-weight: 700;
  font-size: 0.84rem;
}

.nav-title {
  font-weight: 700;
  font-size: 0.98rem;
  line-height: 1.5;
}

@media (max-width: 640px) {
  #post-nav {
    grid-template-columns: 1fr;
  }
  .nav-next {
    grid-column: 1;
    text-align: left;
  }
}