/* templet4 分类信息 — 卡片流 + 正文侧栏（区别于商品采购台） */

.t4-ilist { padding-bottom: 20px; }
.t4-ilist-head {
  display: flex;
  gap: 16px;
  align-items: flex-end;
  justify-content: space-between;
  flex-wrap: wrap;
  margin-bottom: 14px;
  padding: 16px 18px;
  background: linear-gradient(135deg, #fff 0%, #f0f7fc 100%);
  border: 1px solid var(--t4-line);
  border-left: 4px solid var(--t4-accent);
  border-radius: var(--t4-radius);
}
.t4-ilist-heading {
  margin: 0 0 4px;
  font-size: 22px;
  color: var(--t4-brand);
  letter-spacing: .02em;
}
.t4-ilist-lead {
  margin: 0;
  font-size: 13px;
  color: var(--t4-muted);
}
.t4-ilist-search {
  display: flex;
  gap: 8px;
  align-items: center;
  min-width: min(100%, 320px);
  flex: 1;
  max-width: 380px;
}
.t4-ilist-search input {
  flex: 1;
  min-width: 0;
  border: 1px solid var(--t4-line);
  border-radius: 6px;
  padding: 9px 12px;
  font-size: 13px;
  background: #fff;
}
.t4-ilist-filter {
  background: #fff;
  border: 1px solid var(--t4-line);
  border-radius: var(--t4-radius);
  padding: 12px 14px;
  margin-bottom: 12px;
}
.t4-ilist-filter-row {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  margin-bottom: 10px;
}
.t4-ilist-filter-row:last-child { margin-bottom: 0; }
.t4-ilist-filter-label {
  flex: 0 0 36px;
  padding-top: 6px;
  font-size: 13px;
  color: var(--t4-muted);
  font-weight: 600;
}
.t4-ilist-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.t4-ilist-chips a {
  padding: 5px 12px;
  border-radius: 999px;
  border: 1px solid var(--t4-line);
  background: #f8fafc;
  font-size: 13px;
  color: var(--t4-ink);
}
.t4-ilist-chips a:hover {
  border-color: var(--t4-brand);
  color: var(--t4-brand);
}
.t4-ilist-chips a.is-on {
  background: var(--t4-brand);
  border-color: var(--t4-brand);
  color: #fff;
}
.t4-ilist-meta {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 10px;
  font-size: 13px;
  color: var(--t4-muted);
}
.t4-ilist-meta strong { color: var(--t4-ink); }
.t4-ilist-feed {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.t4-ilist-card {
  display: grid;
  grid-template-columns: 148px minmax(0, 1fr);
  gap: 14px;
  background: #fff;
  border: 1px solid var(--t4-line);
  border-radius: var(--t4-radius);
  overflow: hidden;
  transition: border-color .15s, box-shadow .15s;
}
.t4-ilist-card:hover {
  border-color: #94a3b8;
  box-shadow: var(--t4-shadow);
}
.t4-ilist-cover {
  display: block;
  background: #e8eef5;
  min-height: 118px;
}
.t4-ilist-cover img {
  width: 100%;
  height: 100%;
  min-height: 118px;
  object-fit: cover;
  display: block;
}
.t4-ilist-cover-empty {
  display: grid;
  place-items: center;
  height: 100%;
  min-height: 118px;
  font-size: 28px;
  color: var(--t4-muted);
}
.t4-ilist-body {
  padding: 12px 14px 12px 0;
  display: flex;
  flex-direction: column;
  min-width: 0;
}
.t4-ilist-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 6px;
}
.t4-ilist-tag {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 4px;
  background: var(--t4-soft);
  color: var(--t4-brand);
  font-size: 12px;
  font-weight: 600;
}
.t4-ilist-tag-src {
  background: #fff7ed;
  color: var(--t4-accent);
}
.t4-ilist-title {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  font-size: 16px;
  font-weight: 700;
  color: var(--t4-ink);
  line-height: 1.35;
}
.t4-ilist-title:hover { color: var(--t4-brand); }
.t4-ilist-excerpt {
  margin: 6px 0 0;
  font-size: 13px;
  color: var(--t4-muted);
  line-height: 1.55;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
}
.t4-ilist-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 10px;
  padding-top: 8px;
  border-top: 1px dashed #e2e8f0;
}
.t4-ilist-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 14px;
  align-items: baseline;
  font-size: 12px;
  color: var(--t4-muted);
}
.t4-ilist-price {
  font-style: normal;
  font-size: 16px;
  font-weight: 700;
  color: var(--t4-accent);
}
.t4-ilist-price.is-muted {
  font-size: 13px;
  font-weight: 600;
  color: var(--t4-muted);
}

.t4-idp { padding-bottom: 24px; }
.t4-idp-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 280px;
  gap: 16px;
  align-items: start;
}
.t4-idp-main {
  background: #fff;
  border: 1px solid var(--t4-line);
  border-radius: var(--t4-radius);
  overflow: hidden;
}
.t4-idp-header {
  padding: 18px 20px 14px;
  border-bottom: 1px solid #eef2f6;
  background: linear-gradient(180deg, #f8fbfe 0%, #fff 100%);
}
.t4-idp-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 8px; }
.t4-idp-title {
  margin: 0 0 10px;
  font-size: 24px;
  line-height: 1.35;
  color: var(--t4-ink);
}
.t4-idp-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
  align-items: center;
  font-size: 13px;
  color: var(--t4-muted);
}
.t4-idp-price {
  margin-left: auto;
  font-size: 20px;
  color: var(--t4-accent);
  font-weight: 800;
}
.t4-idp-price.is-muted {
  font-size: 14px;
  font-weight: 600;
  color: var(--t4-muted);
}
.t4-idp-media { padding: 14px 16px 0; }
.t4-idp-gallery {
  position: relative;
  height: 480px;
  min-height: 480px;
  background: #f1f5f9;
  border-radius: 6px;
  overflow: hidden;
}
.t4-idp-gallery-single {
  height: 480px;
  min-height: 480px;
  display: grid;
  place-items: center;
}
.t4-idp-gallery-single img {
  width: 100%;
  height: 100%;
  max-height: 480px;
  object-fit: contain;
  display: block;
}
.t4-idp-gallery .t4-article-slide {
  position: absolute;
  inset: 0;
  display: none;
  place-items: center;
  padding: 12px;
}
.t4-idp-gallery .t4-article-slide.is-on { display: grid; }
.t4-idp-gallery .t4-article-slide img {
  max-height: 100%;
  max-width: 100%;
  height: auto;
  width: auto;
  object-fit: contain;
}
.t4-idp-thumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 10px;
}
.t4-idp-thumbs button {
  width: 56px;
  height: 56px;
  padding: 0;
  border: 2px solid transparent;
  border-radius: 4px;
  overflow: hidden;
  background: #e2e8f0;
  cursor: pointer;
}
.t4-idp-thumbs button.is-on { border-color: var(--t4-accent); }
.t4-idp-thumbs img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.t4-idp-section {
  padding: 16px 20px 18px;
  border-top: 1px solid #eef2f6;
}
.t4-idp-section-title {
  margin: 0 0 12px;
  font-size: 16px;
  color: var(--t4-brand);
  padding-left: 10px;
  border-left: 3px solid var(--t4-accent);
}
.t4-idp-tips-box { background: #fffbf7; }
.t4-idp-tips {
  margin: 0;
  padding-left: 18px;
  line-height: 1.9;
  color: var(--t4-muted);
  font-size: 14px;
}
.t4-idp-related-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}
.t4-idp-related-head .t4-idp-section-title { margin: 0; }
.t4-idp-related-head a {
  font-size: 13px;
  color: var(--t4-brand);
  font-weight: 600;
}
.t4-idp-related {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}
.t4-idp-related a {
  display: block;
  border: 1px solid var(--t4-line);
  border-radius: 6px;
  overflow: hidden;
  background: #f8fafc;
  height: 100%;
}
.t4-idp-related a:hover { border-color: var(--t4-brand); }
.t4-idp-related-cover {
  display: block;
  aspect-ratio: 4 / 3;
  background: #e2e8f0;
}
.t4-idp-related-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.t4-idp-related-cover em {
  display: grid;
  place-items: center;
  height: 100%;
  font-style: normal;
  font-size: 22px;
}
.t4-idp-related-text { display: block; padding: 8px 10px 10px; }
.t4-idp-related-text strong {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  font-size: 13px;
  line-height: 1.4;
  color: var(--t4-ink);
}
.t4-idp-related-text i {
  display: block;
  margin-top: 4px;
  font-style: normal;
  font-size: 13px;
  font-weight: 700;
  color: var(--t4-accent);
}
.t4-idp-side {
  display: flex;
  flex-direction: column;
  gap: 12px;
  position: sticky;
  top: 12px;
}
.t4-idp-card {
  background: #fff;
  border: 1px solid var(--t4-line);
  border-radius: var(--t4-radius);
  padding: 16px;
}
.t4-idp-publisher {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 6px;
}
.t4-idp-avatar {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: var(--t4-brand);
  color: #fff;
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 4px;
}
.t4-idp-publisher strong { font-size: 15px; }
.t4-idp-publisher span { font-size: 12px; color: var(--t4-muted); margin-bottom: 6px; }
.t4-idp-contact h3 {
  margin: 0 0 12px;
  font-size: 15px;
  color: var(--t4-brand);
}
.t4-idp-contact p {
  margin: 0 0 8px;
  font-size: 13px;
  display: flex;
  gap: 8px;
}
.t4-idp-contact p span {
  color: var(--t4-muted);
  min-width: 42px;
}
.t4-idp-muted {
  font-size: 12px;
  color: var(--t4-muted);
  margin: 0 0 10px;
}
.t4-idp-muted a { color: var(--t4-accent); font-weight: 600; }

@media (max-width: 980px) {
  .t4-idp-layout { grid-template-columns: 1fr; }
  .t4-idp-side { position: static; }
  .t4-idp-related { grid-template-columns: repeat(2, 1fr); }
  .t4-ilist-card { grid-template-columns: 110px minmax(0, 1fr); }
}
@media (max-width: 560px) {
  .t4-ilist-head { align-items: stretch; }
  .t4-ilist-search { max-width: none; width: 100%; }
  .t4-ilist-card { grid-template-columns: 1fr; }
  .t4-ilist-body { padding: 0 12px 12px; }
  .t4-ilist-cover,
  .t4-ilist-cover img,
  .t4-ilist-cover-empty { min-height: 160px; }
  .t4-idp-related { grid-template-columns: 1fr; }
  .t4-idp-price { margin-left: 0; width: 100%; }
}