.page-news {
  --axis-gap: 2.2rem;
  --node: 11px;
  background: var(--pearl);
}

/* ---------- 面包屑与首屏 ---------- */

.page-news .breadcrumb {
  padding-top: 1.5rem;
}

.page-news .news-hero {
  padding-top: 1.4rem;
}

.page-news .news-hero__inner {
  display: grid;
  gap: 1.4rem;
}

.page-news .news-hero__kicker {
  font-size: var(--fz-13);
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--coral);
  margin: 0 0 .7rem;
}

.page-news .news-hero__title {
  margin: 0;
  font-size: var(--fz-56);
  font-weight: 900;
  line-height: 1.02;
  letter-spacing: -.02em;
  color: var(--deep-sea);
}

.page-news .news-hero__aside {
  display: grid;
  gap: .9rem;
  align-content: end;
  border-top: 1px solid var(--line);
  padding-top: 1rem;
}

.page-news .news-hero__dek {
  margin: 0;
  font-size: var(--fz-17);
  line-height: 1.85;
  color: #3d332d;
}

.page-news .news-hero__note {
  margin: 0;
  font-size: var(--fz-15);
  line-height: 1.8;
  color: var(--mist);
}

.page-news .hero-band {
  margin: 1.8rem 0 0;
  overflow: hidden;
  background: linear-gradient(155deg, var(--deep-sea), var(--abyss));
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 16px), 0 100%);
}

.page-news .hero-band img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 置顶说明条 ---------- */

.page-news .pin-zone {
  padding-top: 2rem;
}

.page-news .pin-note {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  gap: 1rem;
  padding: 1rem 1.15rem;
  background: var(--deep-sea);
  color: var(--on-dark);
  border-left: 4px solid var(--coral);
}

.page-news .pin-note__text {
  flex: 1 1 18rem;
  margin: 0;
  font-size: var(--fz-15);
  line-height: 1.8;
}

.page-news .pin-note__tag {
  display: inline-block;
  margin-right: .6rem;
  padding: .1rem .45rem;
  font-size: var(--fz-13);
  color: var(--abyss);
  background: var(--amber);
}

.page-news .pin-note__close {
  cursor: pointer;
  font-size: var(--fz-13);
  letter-spacing: .1em;
  color: var(--on-dark-dim);
  border: 1px solid var(--on-dark-dim);
  padding: .2rem .6rem;
  white-space: nowrap;
}

.page-news .pin-note__close:hover,
.page-news .pin-note__close:focus-visible {
  color: var(--abyss);
  background: var(--amber);
  border-color: var(--amber);
}

.page-news #pin-dismiss:checked ~ .pin-note {
  display: none;
}

.page-news #pin-dismiss:focus-visible ~ .pin-note {
  outline: 2px solid var(--coral);
  outline-offset: 2px;
}

/* ---------- 时间轴流区 ---------- */

.page-news .news-stream {
  padding-top: 3rem;
}

.page-news .stream-title {
  margin: 0;
  font-size: var(--fz-28);
  font-weight: 900;
  line-height: 1.3;
  color: var(--ink);
}

.page-news .stream-sub {
  margin: .6rem 0 1.4rem;
  font-size: var(--fz-15);
  line-height: 1.8;
  color: #4a3f38;
  max-width: 60ch;
}

.page-news .filter-bar {
  display: grid;
  gap: .6rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--line);
}

.page-news .filter-bar__label {
  font-size: var(--fz-13);
  letter-spacing: .16em;
  color: var(--mist);
  margin: 0;
}

.page-news .chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
}

.page-news .cat-chip {
  display: inline-flex;
  align-items: baseline;
  gap: .45rem;
  padding: .38rem .8rem;
  font-size: var(--fz-13);
  letter-spacing: .06em;
  color: var(--ink);
  background: var(--cream);
  border: 1px solid var(--line-strong);
  cursor: pointer;
  clip-path: polygon(0 0, calc(100% - 9px) 0, 100% 9px, 100% 100%, 0 100%);
  transition: background-color .18s var(--ease), border-color .18s var(--ease);
}

.page-news .cat-chip:hover {
  border-color: var(--amber);
}

.page-news .cat-chip__n {
  font-size: var(--fz-13);
  color: var(--mist);
}

.page-news #cat-all:checked ~ .filter-bar label[for="cat-all"],
.page-news #cat-version:checked ~ .filter-bar label[for="cat-version"],
.page-news #cat-column:checked ~ .filter-bar label[for="cat-column"],
.page-news #cat-maintain:checked ~ .filter-bar label[for="cat-maintain"],
.page-news #cat-topic:checked ~ .filter-bar label[for="cat-topic"] {
  background: var(--amber);
  border-color: var(--amber);
  color: var(--ink);
  font-weight: 700;
}

.page-news #cat-all:checked ~ .filter-bar label[for="cat-all"] .cat-chip__n,
.page-news #cat-version:checked ~ .filter-bar label[for="cat-version"] .cat-chip__n,
.page-news #cat-column:checked ~ .filter-bar label[for="cat-column"] .cat-chip__n,
.page-news #cat-maintain:checked ~ .filter-bar label[for="cat-maintain"] .cat-chip__n,
.page-news #cat-topic:checked ~ .filter-bar label[for="cat-topic"] .cat-chip__n {
  color: rgba(36, 28, 24, .7);
}

.page-news #cat-all:focus-visible ~ .filter-bar label[for="cat-all"],
.page-news #cat-version:focus-visible ~ .filter-bar label[for="cat-version"],
.page-news #cat-column:focus-visible ~ .filter-bar label[for="cat-column"],
.page-news #cat-maintain:focus-visible ~ .filter-bar label[for="cat-maintain"],
.page-news #cat-topic:focus-visible ~ .filter-bar label[for="cat-topic"] {
  outline: 2px solid var(--coral);
  outline-offset: 2px;
}

/* 纯前端过滤 */
.page-news #cat-version:checked ~ .news-axis .axis-item:not([data-cat="version"]),
.page-news #cat-column:checked ~ .news-axis .axis-item:not([data-cat="column"]),
.page-news #cat-maintain:checked ~ .news-axis .axis-item:not([data-cat="maintain"]),
.page-news #cat-topic:checked ~ .news-axis .axis-item:not([data-cat="topic"]) {
  display: none;
}

/* ---------- 轴线本体 ---------- */

.page-news .news-axis {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 2rem 0 0 var(--axis-gap);
}

.page-news .news-axis::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 6px;
  width: 2px;
  background: var(--line);
}

.page-news .axis-item {
  position: relative;
  padding-bottom: 2.3rem;
  max-width: 64ch;
}

.page-news .axis-item::before {
  content: "";
  position: absolute;
  top: .7rem;
  left: calc(-1 * var(--axis-gap) + 1.5px);
  width: var(--node);
  height: var(--node);
  box-sizing: border-box;
  background: var(--pearl);
  border: 2px solid var(--amber);
  transform: rotate(45deg);
}

.page-news .axis-item--latest::before {
  background: var(--coral);
  border-color: var(--coral);
  box-shadow: 0 0 0 4px rgba(232, 72, 59, .16);
}

.page-news .axis-item--pause {
  padding-bottom: 4.4rem;
}

.page-news .axis-item--pause::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 2.5rem;
  height: 1px;
  background: repeating-linear-gradient(90deg, var(--line-strong) 0 8px, transparent 8px 16px);
}

.page-news .axis-item__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .5rem;
}

.page-news .axis-item__date {
  font-size: var(--fz-13);
  letter-spacing: .1em;
  color: var(--mist);
}

.page-news .axis-item--latest .axis-item__date {
  padding: .1rem .5rem;
  color: var(--coral);
  border: 1px solid var(--coral);
  clip-path: polygon(0 0, calc(100% - 8px) 0, 100% 8px, 100% 100%, 0 100%);
}

.page-news .axis-item__title {
  margin: .5rem 0 .45rem;
  font-size: var(--fz-20);
  font-weight: 800;
  line-height: 1.5;
  color: var(--ink);
}

.page-news .axis-item__sum {
  margin: 0;
  font-size: var(--fz-17);
  line-height: 1.8;
  color: #3d332d;
}

.page-news .axis-item__fig {
  margin: .9rem 0 0;
  max-width: 330px;
  overflow: hidden;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 12px), 0 100%);
  background: linear-gradient(150deg, var(--deep-sea), var(--abyss));
}

.page-news .axis-item__fig img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-news .axis-more {
  margin-top: .55rem;
}

.page-news .axis-more > summary {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  cursor: pointer;
  list-style: none;
  font-size: var(--fz-13);
  letter-spacing: .06em;
  color: var(--deep-sea);
  padding: .15rem 0;
  border-bottom: 1px solid var(--line-strong);
}

.page-news .axis-more > summary::-webkit-details-marker {
  display: none;
}

.page-news .axis-more > summary::after {
  content: "＋";
  font-size: .9em;
  color: var(--coral);
}

.page-news .axis-more[open] > summary::after {
  content: "－";
}

.page-news .axis-more > summary:focus-visible {
  outline: 2px solid var(--coral);
  outline-offset: 3px;
}

.page-news .axis-more ul {
  margin: .75rem 0 0;
  padding-left: 1.15rem;
  display: grid;
  gap: .4rem;
  font-size: var(--fz-15);
  line-height: 1.75;
  color: #3b312b;
}

/* ---------- 栏目变更专区 ---------- */

.page-news .change-zone {
  margin-top: 3.2rem;
  padding: 2.2rem 0 2.6rem;
  background: var(--cream);
  border-left: 4px solid var(--coral);
}

.page-news .change-zone__inner {
  display: grid;
  gap: 1.8rem;
}

.page-news .change-zone__kicker {
  margin: 0 0 .6rem;
  font-size: var(--fz-13);
  letter-spacing: .2em;
  color: var(--coral);
}

.page-news .change-zone__title {
  margin: 0;
  font-size: var(--fz-28);
  font-weight: 900;
  line-height: 1.32;
  color: var(--ink);
}

.page-news .change-zone__lead {
  margin: .8rem 0 1.4rem;
  font-size: var(--fz-17);
  line-height: 1.85;
  color: #3d332d;
  max-width: 56ch;
}

.page-news .change-list {
  margin: 0 0 1.6rem;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
}

.page-news .change-row {
  display: grid;
  gap: .35rem;
  padding: .85rem 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-news .change-row dt {
  font-size: var(--fz-13);
  letter-spacing: .14em;
  color: var(--tide);
}

.page-news .change-row dd {
  margin: 0;
  font-size: var(--fz-15);
  line-height: 1.8;
  color: #3b312b;
}

.page-news .change-zone__fig {
  margin: 0;
  align-self: start;
  overflow: hidden;
  background: var(--pearl);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 18px), 0 100%);
}

.page-news .change-zone__fig img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 翻阅与回访 ---------- */

.page-news .revisit {
  padding: 3rem 0 3.6rem;
}

.page-news .revisit-card {
  padding: 1.2rem 1.1rem 1.3rem;
  background: var(--cream);
  border-top: 3px solid var(--deep-sea);
}

.page-news .revisit-card__tag {
  margin: 0 0 .5rem;
  font-size: var(--fz-13);
  letter-spacing: .16em;
  color: var(--mist);
}

.page-news .revisit-card__title {
  margin: 0 0 .5rem;
  font-size: var(--fz-20);
  font-weight: 800;
  line-height: 1.45;
  color: var(--deep-sea);
}

.page-news .revisit-card p {
  margin: 0;
  font-size: var(--fz-15);
  line-height: 1.8;
  color: #3b312b;
}

.page-news .revisit-card__link {
  display: inline-block;
  margin-top: .7rem;
  font-size: var(--fz-13);
  color: var(--coral);
  border-bottom: 1px solid var(--coral);
  text-decoration: none;
}

.page-news .revisit-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .6rem;
  margin-top: 1.8rem;
  padding-top: 1.1rem;
  border-top: 1px solid var(--line);
  font-size: var(--fz-13);
  letter-spacing: .06em;
}

.page-news .revisit-nav a {
  color: var(--deep-sea);
  text-decoration: none;
  border-bottom: 1px solid var(--line-strong);
}

.page-news .revisit-nav a:hover,
.page-news .revisit-nav a:focus-visible {
  color: var(--coral);
  border-bottom-color: var(--coral);
}

.page-news .revisit-nav span {
  color: var(--mist);
}

/* ---------- 响应式 ---------- */

@media (min-width: 640px) {
  .page-news .news-hero__aside {
    border-top: 1px solid var(--line);
  }
  .page-news .change-row {
    grid-template-columns: 5.5rem 1fr;
    gap: 1rem;
    align-items: baseline;
  }
}

@media (min-width: 900px) {
  .page-news {
    --axis-gap: 2.8rem;
  }

  .page-news .news-hero {
    padding-top: 2rem;
  }

  .page-news .news-hero__inner {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    gap: 3.2rem;
    align-items: end;
  }

  .page-news .news-hero__title {
    font-size: var(--fz-72);
  }

  .page-news .news-hero__aside {
    padding-top: 1.2rem;
  }

  .page-news .filter-bar {
    grid-template-columns: 9rem 1fr;
    align-items: center;
    gap: 1.2rem;
  }

  .page-news .change-zone__inner {
    grid-template-columns: minmax(0, 1fr) 16rem;
    gap: 2.6rem;
    align-items: start;
  }

  .page-news .change-zone {
    padding: 3rem 0 3.4rem;
  }
}

/* 平板横向浏览：轴线与条目之间自动加宽 */
@media (min-width: 768px) and (max-width: 1199px) {
  .page-news {
    --axis-gap: 3.6rem;
  }

  .page-news .news-axis {
    padding-top: 2.4rem;
  }

  .page-news .axis-item {
    max-width: 72ch;
  }

  .page-news .axis-item__fig {
    max-width: 380px;
  }
}

@media (min-width: 1200px) {
  .page-news .axis-item {
    max-width: 62ch;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .cat-chip {
    transition: none;
  }
}