.page-news {
  --news-sticky-top: calc(var(--tb-mast-h) + 1.5rem);
  --news-hair: rgba(176, 141, 87, 0.42);
}

.page-news img {
  display: block;
  max-width: 100%;
  height: auto;
}

/* ---------- 面包屑 ---------- */
.page-news .tb-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem;
  padding: 1.5rem 0 0;
  font-size: 0.8125rem;
  letter-spacing: 0.02em;
  color: var(--tb-graphite);
}

.page-news .tb-breadcrumb a {
  color: var(--tb-copper);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.page-news .tb-breadcrumb a:hover,
.page-news .tb-breadcrumb a:focus-visible {
  border-bottom-color: var(--tb-copper);
  outline: none;
}

.page-news .tb-breadcrumb__sep {
  color: var(--tb-sand);
}

.page-news .tb-breadcrumb [aria-current="page"] {
  color: var(--tb-ink);
  font-weight: 600;
}

/* ---------- 页头 ---------- */
.page-news .news-masthead {
  padding: 1.5rem 0 2.25rem;
  border-bottom: 1px solid var(--tb-sand);
}

.page-news .news-masthead__title {
  margin: 0.35rem 0 0;
  font-family: var(--tb-font-head);
  font-size: clamp(2.5rem, 8vw, 4.75rem);
  line-height: 1.02;
  letter-spacing: -0.015em;
  color: var(--tb-ink);
}

.page-news .news-masthead__cols {
  display: grid;
  gap: 1.25rem;
  margin-top: 1.35rem;
}

.page-news .news-masthead__lead {
  margin: 0;
  font-size: 1.0625rem;
  line-height: 1.85;
  color: var(--tb-graphite);
  max-width: 60ch;
}

.page-news .news-masthead__aside {
  border-left: 2px solid var(--tb-gold);
  padding-left: 0.9rem;
}

.page-news .news-masthead__aside .tb-note {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.75;
}

.page-news .news-masthead__figure {
  margin: 1.75rem 0 0;
  overflow: hidden;
  border-radius: 4px;
  background: var(--tb-paper-deep);
}

.page-news .news-masthead__figure img {
  width: 100%;
  aspect-ratio: 2 / 1;
  object-fit: cover;
  filter: saturate(0.92) contrast(1.02);
}

/* ---------- 主布局 ---------- */
.page-news .news-layout {
  display: grid;
  gap: 2rem;
  padding: 2.25rem 0;
}

.page-news .news-side__inner {
  display: grid;
  gap: 1.5rem;
}

.page-news .news-side__heading {
  margin: 0;
  font-family: var(--tb-font-head);
  font-size: 0.9375rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--tb-gold);
  text-transform: uppercase;
}

.page-news .news-side__heading--sub {
  margin-top: 0.25rem;
}

.page-news .news-index {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--news-hair);
}

.page-news .news-index li {
  border-bottom: 1px solid var(--news-hair);
}

.page-news .news-index a {
  display: grid;
  grid-template-columns: 1.3rem 1fr;
  align-items: baseline;
  gap: 0.5rem;
  padding: 0.6rem 0.4rem;
  font-size: 0.875rem;
  line-height: 1.5;
  color: var(--tb-ink);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: background-color 0.18s ease, color 0.18s ease, border-color 0.18s ease, padding-left 0.18s ease;
}

.page-news .news-index a:hover,
.page-news .news-index a:focus-visible {
  background: var(--tb-paper-deep);
  color: var(--tb-copper);
  border-left-color: var(--tb-copper);
  padding-left: 0.65rem;
  outline: none;
}

.page-news .news-index__idx {
  font-size: 0.75rem;
  color: var(--tb-gold);
  letter-spacing: 0.06em;
}

.page-news .news-index--tags a {
  grid-template-columns: 0.75rem 1fr;
}

.page-news .news-dot {
  display: block;
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 50%;
  transform: translateY(-0.1rem);
}

.page-news .news-dot--gold { background: var(--tb-gold); }
.page-news .news-dot--copper { background: var(--tb-copper); }
.page-news .news-dot--violet { background: var(--tb-violet); }
.page-news .news-dot--cinnabar { background: var(--tb-cinnabar); }
.page-news .news-dot--ink { background: var(--tb-ink); }

.page-news .news-side__fig {
  margin: 0;
  border-radius: 4px;
  overflow: hidden;
  background: var(--tb-paper-deep);
}

.page-news .news-side__fig img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
}

/* ---------- 条目区 ---------- */
.page-news .news-feed {
  display: grid;
  gap: 2rem;
  min-width: 0;
}

.page-news .news-feed__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.5rem;
  padding-bottom: 0.6rem;
  border-bottom: 2px solid var(--tb-ink);
}

.page-news .news-feed__head h2 {
  margin: 0;
  font-family: var(--tb-font-head);
  font-size: clamp(1.5rem, 3.4vw, 2.125rem);
  color: var(--tb-ink);
  letter-spacing: -0.01em;
}

.page-news .news-feed__meta {
  margin: 0;
  font-size: 0.8125rem;
  color: var(--tb-gold);
  letter-spacing: 0.08em;
}

.page-news .news-series {
  scroll-margin-top: var(--news-sticky-top);
}

.page-news .news-series + .news-series {
  margin-top: 1.75rem;
}

.page-news .news-series__head {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.9rem;
}

.page-news .news-series__head h3 {
  margin: 0;
  font-family: var(--tb-font-head);
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--tb-ink);
  white-space: nowrap;
}

.page-news .news-series__head::after {
  content: "";
  flex: 1 1 auto;
  height: 1px;
  background-image: repeating-linear-gradient(to right, var(--tb-sand) 0 6px, transparent 6px 12px);
}

.page-news .news-series__count {
  order: 3;
  font-size: 0.75rem;
  color: var(--tb-gold);
  white-space: nowrap;
}

.page-news .news-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.7rem;
}

.page-news .news-entry {
  border-left: 3px solid var(--tb-gold);
  background: linear-gradient(to right, rgba(176, 141, 87, 0.09), rgba(176, 141, 87, 0) 46%), var(--tb-paper-deep);
  border-radius: 0 5px 5px 0;
  transition: border-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

.page-news .news-entry:hover {
  transform: translateX(2px);
  box-shadow: 0 5px 16px rgba(30, 42, 58, 0.09);
}

.page-news .news-entry--stock { border-left-color: var(--tb-copper); }
.page-news .news-entry--network { border-left-color: var(--tb-violet); }
.page-news .news-entry--auth { border-left-color: var(--tb-cinnabar); }
.page-news .news-entry--version { border-left-color: var(--tb-ink); }

.page-news .news-entry__sum {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem 0.7rem;
  padding: 0.85rem 1rem;
  cursor: pointer;
  list-style: none;
}

.page-news .news-entry__sum::-webkit-details-marker {
  display: none;
}

.page-news .news-entry__sum:focus-visible {
  outline: 2px solid var(--tb-copper-lit);
  outline-offset: -2px;
}

.page-news .news-entry__time {
  flex: 0 0 auto;
  padding: 0.1rem 0.45rem;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--tb-gold);
  border: 1px solid var(--news-hair);
  border-radius: 2px;
  white-space: nowrap;
}

.page-news .news-entry__name {
  flex: 1 1 12ch;
  min-width: 0;
  font-size: 0.9875rem;
  font-weight: 600;
  line-height: 1.55;
  color: var(--tb-ink);
}

.page-news .news-entry__sum .tb-tag {
  flex: 0 0 auto;
}

.page-news .news-entry__sum::after {
  content: "+";
  flex: 0 0 auto;
  font-family: var(--tb-font-mono);
  font-size: 1rem;
  line-height: 1;
  color: var(--tb-copper);
}

.page-news .news-entry[open] .news-entry__sum::after {
  content: "–";
}

.page-news .news-entry__body {
  padding: 0 1rem 1rem;
  font-size: 0.9375rem;
  line-height: 1.78;
  color: var(--tb-graphite);
  border-top: 1px dashed var(--news-hair);
  padding-top: 0.85rem;
  margin-top: 0.15rem;
}

.page-news .news-entry__body p {
  margin: 0 0 0.6rem;
}

.page-news .news-entry__body p:last-child {
  margin-bottom: 0;
}

.page-news .news-entry__body ul {
  margin: 0 0 0.6rem;
  padding-left: 1.05rem;
}

.page-news .news-entry__body li {
  margin-bottom: 0.2rem;
}

.page-news .news-entry__fig {
  margin: 0.9rem 0 0;
  border-radius: 3px;
  overflow: hidden;
  background: var(--tb-paper);
}

.page-news .news-entry__fig img {
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

/* ---------- 时间刻线 ---------- */
.page-news .news-timeline {
  padding: 2.25rem 0;
  border-top: 1px solid var(--tb-sand);
}

.page-news .news-section-head {
  margin-bottom: 1.5rem;
}

.page-news .news-section-head h2 {
  margin: 0.4rem 0 0;
  font-family: var(--tb-font-head);
  font-size: clamp(1.5rem, 3.6vw, 2.25rem);
  line-height: 1.2;
  color: var(--tb-ink);
  letter-spacing: -0.01em;
}

.page-news .news-section-head__lead {
  margin: 0.7rem 0 0;
  max-width: 62ch;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--tb-graphite);
}

.page-news .news-timeline__board {
  display: grid;
  gap: 1.25rem;
  padding: 1.35rem 0.9rem 0.4rem;
  background: var(--tb-paper-deep);
  border-radius: 5px;
}

.page-news .news-timeline__svg {
  display: block;
  width: 100%;
  height: auto;
}

.page-news .news-timeline__fig {
  margin: 0;
  border-radius: 4px;
  overflow: hidden;
}

.page-news .news-timeline__fig img {
  width: 100%;
  aspect-ratio: 2 / 1;
  object-fit: cover;
}

.page-news .news-timeline__foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem;
  margin-top: 1.15rem;
}

.page-news .news-timeline__foot .tb-note {
  flex: 1 1 18rem;
  margin: 0;
  font-size: 0.875rem;
}

.page-news .news-timeline__foot .tb-btn {
  flex: 0 0 auto;
  text-decoration: none;
}

/* ---------- 标签口径 ---------- */
.page-news .news-cats {
  padding: 2.25rem 0;
  border-top: 1px solid var(--tb-sand);
}

.page-news .news-cats__grid {
  display: grid;
  gap: 0.9rem;
}

.page-news .news-cat {
  position: relative;
  padding: 1.1rem 1.1rem 1.15rem;
  background: var(--tb-paper);
  border: 1px solid var(--news-hair);
  border-radius: 4px;
  scroll-margin-top: var(--news-sticky-top);
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.page-news .news-cat::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 4px;
  border-radius: 4px 0 0 4px;
  background: var(--tb-gold);
}

.page-news .news-cat--copper::before { background: var(--tb-copper); }
.page-news .news-cat--violet::before { background: var(--tb-violet); }
.page-news .news-cat--cinnabar::before { background: var(--tb-cinnabar); }
.page-news .news-cat--ink::before { background: var(--tb-ink); }

.page-news .news-cat:hover {
  transform: translateY(-2px);
  border-color: var(--tb-copper);
}

.page-news .news-cat__no {
  margin: 0;
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  color: var(--tb-gold);
}

.page-news .news-cat h3 {
  margin: 0.35rem 0 0.45rem;
  font-family: var(--tb-font-head);
  font-size: 1.125rem;
  color: var(--tb-ink);
}

.page-news .news-cat p:last-child {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--tb-graphite);
}

/* ---------- 回溯路径 ---------- */
.page-news .news-lookup {
  padding: 2.25rem 0 1rem;
  border-top: 1px solid var(--tb-sand);
}

.page-news .news-lookup__grid {
  display: grid;
  gap: 1rem;
}

.page-news .news-lookup__item {
  padding: 1rem 1.1rem;
  background: linear-gradient(160deg, var(--tb-paper-deep), var(--tb-paper));
  border-radius: 4px;
  border-bottom: 2px solid var(--tb-sand);
  transition: border-color 0.2s ease;
}

.page-news .news-lookup__item:hover {
  border-bottom-color: var(--tb-copper);
}

.page-news .news-lookup__item h3 {
  margin: 0 0 0.45rem;
  font-family: var(--tb-font-head);
  font-size: 1.0625rem;
  color: var(--tb-ink);
}

.page-news .news-lookup__item p {
  margin: 0 0 0.7rem;
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--tb-graphite);
}

.page-news .news-lookup__link {
  display: inline-block;
  font-size: 0.875rem;
  color: var(--tb-copper);
  text-decoration: none;
  border-bottom: 1px solid var(--news-hair);
  padding-bottom: 0.1rem;
  transition: color 0.18s ease, border-color 0.18s ease;
}

.page-news .news-lookup__link:hover,
.page-news .news-lookup__link:focus-visible {
  color: var(--tb-copper-lit);
  border-bottom-color: var(--tb-copper-lit);
  outline: none;
}

.page-news .news-lookup__note {
  margin: 1.5rem 0 0;
  font-size: 0.875rem;
  line-height: 1.75;
  color: var(--tb-graphite);
}

.page-news .news-lookup__note a {
  color: var(--tb-copper);
  text-decoration: none;
  border-bottom: 1px solid var(--news-hair);
}

.page-news .news-lookup__note a:hover,
.page-news .news-lookup__note a:focus-visible {
  color: var(--tb-copper-lit);
  border-bottom-color: var(--tb-copper-lit);
  outline: none;
}

/* ---------- 平板 ---------- */
@media (min-width: 640px) {
  .page-news .news-masthead {
    padding: 2rem 0 2.75rem;
  }

  .page-news .news-feed__head h2 {
    font-size: 2rem;
  }

  .page-news .news-entry__sum {
    padding: 0.9rem 1.25rem;
  }

  .page-news .news-entry__body {
    padding: 0.9rem 1.25rem 1.15rem;
  }

  .page-news .news-timeline__board {
    padding: 1.75rem 1.5rem 0.75rem;
  }

  .page-news .news-cats__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-news .news-cat--ink {
    grid-column: 1 / -1;
  }

  .page-news .news-lookup__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 900px) {
  .page-news .news-masthead__cols {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
    gap: 2.5rem;
    align-items: start;
  }

  .page-news .news-masthead__figure {
    margin-top: 2.25rem;
  }

  .page-news .news-layout {
    grid-template-columns: 224px minmax(0, 1fr);
    gap: 3rem;
    padding: 3rem 0 2.5rem;
  }

  .page-news .news-side__inner {
    position: sticky;
    top: var(--news-sticky-top);
    gap: 1.6rem;
  }

  .page-news .news-side__fig {
    margin-top: 0.4rem;
  }

  .page-news .news-entry__name {
    font-size: 1.0125rem;
  }

  .page-news .news-cats__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-news .news-cat--ink {
    grid-column: auto;
  }

  .page-news .news-cats__grid > .news-cat:nth-child(1),
  .page-news .news-cats__grid > .news-cat:nth-child(2) {
    grid-column: span 1;
  }

  .page-news .news-timeline__board {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    align-items: center;
    gap: 1.75rem;
  }
}

@media (min-width: 1120px) {
  .page-news .news-layout {
    grid-template-columns: 248px minmax(0, 1fr);
    gap: 3.5rem;
  }
}

/* ---------- 减少动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-news .news-entry,
  .page-news .news-cat,
  .page-news .news-lookup__item,
  .page-news .news-index a {
    transition: none;
  }

  .page-news .news-entry:hover,
  .page-news .news-cat:hover {
    transform: none;
  }
}