/* ============================================================
   CATEGORY PAGE — page header + filters + lead + list + sidebar
   ============================================================ */

.cat-header {
  padding: var(--s-7) 0 var(--s-5);
}
.cat-title {
  font-family: var(--font-head);
  font-size: clamp(36px, 7vw, 72px);
  font-weight: 700;
  line-height: 0.95;
  letter-spacing: -0.025em;
  margin-bottom: 14px;
}
.cat-desc {
  font-size: 17px;
  color: var(--ink-2);
  line-height: 1.45;
  max-width: 720px;
}
.cat-meta-row {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 18px;
}
.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); display: inline-block; }

/* Sticky filter bar */
.cat-filters {
  position: sticky;
  top: 52px;
  z-index: 4;
  background: var(--paper);
  border-top: 2px solid var(--ink);
  border-bottom: 1px solid var(--ink-3);
  padding: 12px 0;
}
@media (min-width: 1080px) { .cat-filters { top: 56px; } }
.cat-filters-row {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  justify-content: space-between;
}
.chip-row {
  display: flex;
  gap: 6px;
  overflow-x: auto;
  scrollbar-width: none;
  align-items: center;
}
.chip-row::-webkit-scrollbar { display: none; }
.chip {
  padding: 5px 12px;
  border-radius: var(--r-pill);
  background: transparent;
  border: 1px solid var(--paper-4);
  font-size: 12px;
  font-weight: 500;
  color: var(--ink-2);
  white-space: nowrap;
  flex-shrink: 0;
  transition: background var(--t-fast), color var(--t-fast);
}
.chip:hover { background: var(--paper-2); color: var(--ink); }
.chip.active {
  background: var(--ink);
  color: var(--paper);
  border-color: var(--ink);
}
.sort-toggle { font-family: var(--font-mono); font-size: 11px; color: var(--ink-3); white-space: nowrap; }

.cat-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--s-7);
  padding: var(--s-6) 0;
}
@media (min-width: 1080px) {
  .cat-layout { grid-template-columns: minmax(0, 1fr) 320px; gap: 40px; }
}

.lead-card {
  border-bottom: 2px solid var(--ink);
  padding-bottom: var(--s-6);
  margin-bottom: var(--s-5);
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--s-5);
}
@media (min-width: 768px) {
  .lead-card { grid-template-columns: 1.4fr 1fr; gap: 28px; }
}
.lead-card-img {
  aspect-ratio: 4/3;
  width: 100%;
  object-fit: cover;
}
.lead-card-title {
  font-family: var(--font-head);
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.018em;
  margin: 12px 0;
  color: var(--ink);
}

/* Article list */
.cat-list { display: flex; flex-direction: column; }
.cat-list-item {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 14px;
  padding: 16px 0;
  border-bottom: 1px solid var(--paper-3);
}
@media (min-width: 768px) {
  .cat-list-item { grid-template-columns: 180px 1fr auto; gap: 20px; padding: 18px 0; align-items: flex-start; }
}
.cat-list-item:hover .article-card-image { transform: scale(1.02); }
.cat-list-img {
  aspect-ratio: 4/3;
  object-fit: cover;
  width: 100%;
}
.cat-list-title {
  font-family: var(--font-head);
  font-size: clamp(16px, 1.8vw, 21px);
  font-weight: 600;
  line-height: 1.2;
  margin-top: 8px;
  color: var(--ink);
}
.cat-list-excerpt {
  font-size: 13px;
  color: var(--ink-2);
  line-height: 1.55;
  margin-top: 8px;
  max-width: 620px;
  display: none;
}
@media (min-width: 768px) { .cat-list-excerpt { display: block; } }
.cat-list-date {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-3);
  white-space: nowrap;
  display: none;
}
@media (min-width: 768px) { .cat-list-date { display: inline; } }

/* Pagination */
.pagination {
  display: flex;
  gap: 8px;
  justify-content: center;
  margin: var(--s-7) 0 var(--s-5);
  flex-wrap: wrap;
}
.pagination span, .pagination a {
  padding: 6px 12px;
  border: 1px solid var(--paper-4);
  font-size: 13px;
  color: var(--ink);
  cursor: pointer;
}
.pagination .current { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.pagination a:hover { background: var(--paper-2); }

/* Category sidebar */
.cat-sidebar { display: flex; flex-direction: column; gap: var(--s-5); }

.popular-box {
  padding: 18px;
  border: 2px solid var(--ink);
}
.popular-box h4 {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 14px;
}
.popular-list { display: flex; flex-direction: column; }
.popular-item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px dashed var(--paper-3);
  align-items: flex-start;
}
.popular-item:last-child { border-bottom: 0; }
.popular-num {
  font-family: var(--font-head);
  font-size: 28px;
  font-weight: 800;
  color: var(--accent);
  line-height: 0.9;
  letter-spacing: -0.04em;
}
.popular-title {
  font-family: var(--font-head);
  font-size: 14px;
  font-weight: 600;
  line-height: 1.3;
  color: var(--ink);
}

.cat-newsletter-block {
  padding: 22px;
  background: var(--ink);
  color: var(--paper);
}
.cat-newsletter-block h4 {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 6px;
}
.cat-newsletter-block .cn-title {
  font-family: var(--font-head);
  font-size: 22px;
  font-weight: 700;
  color: var(--paper);
  margin-bottom: 10px;
  line-height: 1.1;
  letter-spacing: -0.02em;
}
.cat-newsletter-block .cn-text {
  font-size: 13px;
  color: var(--paper-3);
  line-height: 1.5;
  margin-bottom: 12px;
}

.topics-box { padding: 18px; background: var(--paper-2); }
.topics-box h4 {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 10px;
}
.topics-tags { display: flex; gap: 6px; flex-wrap: wrap; }