.page-news {
  --news-gap: clamp(1.5rem, 4vw, 3rem);
  --news-radius: var(--radius-m);
  --news-line: 1px solid var(--rule);
}

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

.page-news .media-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-news a:focus-visible,
.page-news summary:focus-visible {
  outline: 2px solid var(--amber-light);
  outline-offset: 3px;
  border-radius: var(--radius-s);
}

/* ---------- 首屏 ---------- */
.page-news .news-hero {
  padding-block: calc(var(--header-offset) + clamp(1rem, 3vw, 2rem)) clamp(2.5rem, 6vw, 4rem);
}

.page-news .hero-grid {
  display: grid;
  gap: var(--news-gap);
  align-items: center;
  margin-top: clamp(1.25rem, 3vw, 2rem);
}

.page-news .hero-copy > * + * {
  margin-top: 1rem;
}

.page-news .hero-copy h1 {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(2.1rem, 6.4vw, 3.9rem);
  line-height: 1.08;
  letter-spacing: -0.01em;
  margin: 0;
}

.page-news .hero-copy .lede {
  max-width: 46ch;
}

.page-news .hero-facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.75rem;
  border-top: 2px solid var(--amber);
  padding-top: 0.9rem;
  margin-top: 1.4rem;
}

.page-news .hero-fact {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  min-width: 0;
}

.page-news .hero-fact__num {
  font-size: clamp(1.6rem, 4.4vw, 2.3rem);
  line-height: 1;
  color: var(--amber-light);
}

.page-news .hero-fact__label {
  font-size: 0.78rem;
  color: var(--fg-muted);
  line-height: 1.4;
}

.page-news .hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 1.6rem;
}

.page-news .hero-figure {
  margin: 0;
}

.page-news .hero-figure .media-cap {
  margin-top: 0.6rem;
}

/* ---------- 第 3 版要点 ---------- */
.page-news .news-latest {
  padding-block: clamp(2.5rem, 7vw, 5rem);
}

.page-news .latest-grid {
  display: grid;
  gap: clamp(1.25rem, 3.5vw, 2.5rem);
  margin-top: clamp(1.5rem, 4vw, 2.5rem);
}

.page-news .ver-rail {
  min-width: 0;
}

.page-news .ver-rail__title {
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fg-muted);
  margin: 0 0 0.6rem;
}

.page-news .ver-list {
  display: flex;
  gap: 0.5rem;
  list-style: none;
  margin: 0;
  padding: 0 0 0.4rem;
  overflow-x: auto;
  max-width: 100%;
}

.page-news .ver-list > li {
  flex: 0 0 auto;
}

.page-news .ver-link {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.5rem 0.85rem;
  border: 1px solid var(--rule);
  border-radius: var(--radius-pill);
  color: var(--fg);
  text-decoration: none;
  font-size: 0.82rem;
  white-space: nowrap;
  transition: border-color 0.18s var(--ease), background-color 0.18s var(--ease), transform 0.18s var(--ease);
}

.page-news .ver-link:hover {
  border-color: var(--amber-light);
  transform: translateY(-1px);
}

.page-news .ver-link.is-current {
  border-color: var(--amber);
  background: rgba(217, 154, 43, 0.14);
}

.page-news .ver-link__no {
  color: var(--amber);
  font-size: 0.78rem;
}

.page-news .ver-link__name {
  font-weight: 600;
}

.page-news .latest-body {
  display: grid;
  gap: 1rem;
  min-width: 0;
}

.page-news .log-card {
  background: var(--ink-900);
  border: 1px solid var(--rule);
  border-left: 3px solid var(--amber);
  border-radius: var(--news-radius);
  padding: clamp(1rem, 2.6vw, 1.6rem);
  transition: transform 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-news .log-card:hover {
  transform: translateY(-2px);
  border-color: var(--amber-light);
}

.page-news .log-card__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.74rem;
  color: var(--fg-muted);
  margin: 0 0 0.6rem;
}

.page-news .log-card__no {
  font-size: 1rem;
  color: var(--amber);
  letter-spacing: 0.05em;
}

.page-news .log-card h3 {
  font-family: var(--font-head);
  font-size: clamp(1.05rem, 2.6vw, 1.3rem);
  line-height: 1.35;
  margin: 0 0 0.55rem;
}

.page-news .log-card p {
  margin: 0;
  color: var(--fg-muted);
  line-height: 1.8;
  font-size: 0.94rem;
}

.page-news .log-more {
  margin-top: 0.9rem;
  border-top: 1px dashed var(--rule);
  padding-top: 0.7rem;
}

.page-news .log-more summary {
  cursor: pointer;
  list-style: none;
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--celadon);
  letter-spacing: 0.04em;
}

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

.page-news .log-more summary::before {
  content: "+";
  display: inline-block;
  width: 1rem;
  text-align: center;
  color: var(--amber);
}

.page-news .log-more[open] summary::before {
  content: "–";
}

.page-news .log-more ul {
  margin: 0.7rem 0 0;
  padding-left: 1.1rem;
  display: grid;
  gap: 0.45rem;
}

.page-news .log-more li {
  font-size: 0.86rem;
  line-height: 1.7;
  color: var(--fg-muted);
}

/* ---------- 版本时间线 ---------- */
.page-news .news-timeline {
  padding-block: clamp(2.5rem, 7vw, 5rem);
}

.page-news .timeline-figure {
  margin: clamp(1.5rem, 4vw, 2.5rem) 0 0;
}

.page-news .timeline-figure .media-cap {
  margin-top: 0.6rem;
}

.page-news .timeline {
  list-style: none;
  margin: clamp(1.5rem, 4vw, 2.5rem) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.page-news .tl-node {
  position: relative;
  border-top: 2px solid var(--rule);
  padding: 0.9rem 0 0;
  min-width: 0;
}

.page-news .tl-node::before {
  content: "";
  position: absolute;
  top: -6px;
  left: 0;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--rule);
}

.page-news .tl-node.is-current {
  border-top-color: var(--amber);
}

.page-news .tl-node.is-current::before {
  background: var(--celadon);
  box-shadow: 0 0 0 4px rgba(127, 179, 162, 0.22);
}

.page-news .tl-node__head {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  font-size: 0.75rem;
  color: var(--fg-muted);
  margin: 0 0 0.4rem;
}

.page-news .tl-node__no {
  font-size: 1.05rem;
  color: var(--amber);
}

.page-news .tl-node__title {
  font-family: var(--font-head);
  font-size: 1rem;
  line-height: 1.4;
  margin: 0 0 0.45rem;
}

.page-news .tl-node__desc {
  margin: 0;
  font-size: 0.86rem;
  line-height: 1.75;
  color: var(--fg-muted);
}

.page-news .tl-node__tags {
  margin: 0.6rem 0 0;
}

/* ---------- 变更分类 ---------- */
.page-news .news-cats {
  padding-block: clamp(2.5rem, 7vw, 5rem);
}

.page-news .cats-grid {
  display: grid;
  gap: var(--news-gap);
  margin-top: clamp(1.5rem, 4vw, 2.5rem);
  align-items: start;
}

.page-news .cats-figure {
  margin: 0;
}

.page-news .cats-figure .media-cap {
  margin-top: 0.6rem;
}

.page-news .cats-list {
  display: grid;
  gap: 0.9rem;
  min-width: 0;
}

.page-news .cat {
  border: 1px solid var(--rule);
  border-top: 3px solid var(--amber);
  border-radius: var(--news-radius);
  padding: 0.95rem 1.1rem 1.05rem;
  background: var(--ink-900);
  transition: border-color 0.18s var(--ease), transform 0.18s var(--ease);
}

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

.page-news .cat--zone {
  border-top-color: var(--celadon);
}

.page-news .cat--index {
  border-top-color: var(--amber-light);
}

.page-news .cat--note {
  border-top-color: var(--slate);
}

.page-news .cat__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.6rem;
  font-size: 0.74rem;
  color: var(--fg-muted);
  margin: 0 0 0.5rem;
}

.page-news .cat h3 {
  font-family: var(--font-head);
  font-size: 1.02rem;
  margin: 0 0 0.4rem;
}

.page-news .cat p:last-child {
  margin: 0;
  font-size: 0.87rem;
  line-height: 1.78;
  color: var(--fg-muted);
}

/* ---------- 维护节奏 ---------- */
.page-news .news-rhythm {
  padding-block: clamp(2.5rem, 7vw, 5rem);
}

.page-news .rhythm-grid {
  display: grid;
  gap: var(--news-gap);
  align-items: start;
}

.page-news .rhythm-copy h2 {
  font-family: var(--font-head);
  font-size: clamp(1.45rem, 4.2vw, 2.15rem);
  line-height: 1.25;
  margin: 0.5rem 0 0.8rem;
}

.page-news .rhythm-copy .lede {
  max-width: 44ch;
}

.page-news .rhythm-list {
  list-style: none;
  margin: 1.6rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.9rem;
}

.page-news .rhythm-item {
  border-left: 2px solid var(--rule);
  padding-left: 0.9rem;
}

.page-news .rhythm-item__when {
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  color: var(--amber);
  margin: 0 0 0.25rem;
}

.page-news .rhythm-item h3 {
  font-family: var(--font-head);
  font-size: 0.98rem;
  margin: 0 0 0.3rem;
}

.page-news .rhythm-item p:last-child {
  margin: 0;
  font-size: 0.86rem;
  line-height: 1.75;
  color: var(--fg-muted);
}

.page-news .rhythm-figure {
  margin: 0 auto;
  max-width: 380px;
}

.page-news .rhythm-figure .media-cap {
  margin-top: 0.6rem;
}

/* ---------- 最近更新条目 ---------- */
.page-news .news-feed {
  padding-block: clamp(2.5rem, 7vw, 5rem);
}

.page-news .chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  list-style: none;
  margin: 1rem 0 0;
  padding: 0;
}

.page-news .chips .chip {
  text-decoration: none;
}

.page-news .feed {
  list-style: none;
  margin: clamp(1.5rem, 4vw, 2.2rem) 0 0;
  padding: 0;
}

.page-news .feed-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.35rem 0.9rem;
  padding-block: 1.1rem;
  border-top: 1px solid var(--rule);
  align-items: start;
}

.page-news .feed-item:last-child {
  border-bottom: 1px solid var(--rule);
}

.page-news .feed-item__no {
  font-size: 1.15rem;
  line-height: 1.2;
  color: var(--amber);
}

.page-news .feed-item__body {
  min-width: 0;
}

.page-news .feed-item__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  margin: 0 0 0.35rem;
  font-size: 0.72rem;
  color: var(--fg-muted);
}

.page-news .feed-item__title {
  font-family: var(--font-head);
  font-size: 1rem;
  line-height: 1.4;
  margin: 0 0 0.3rem;
}

.page-news .feed-item__desc {
  margin: 0;
  font-size: 0.87rem;
  line-height: 1.75;
  color: var(--fg-muted);
}

.page-news .feed-item__link {
  grid-column: 2;
  justify-self: start;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--amber);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  padding-bottom: 1px;
  transition: border-color 0.18s var(--ease), color 0.18s var(--ease);
}

.page-news .feed-item__link:hover {
  color: var(--amber-light);
  border-bottom-color: currentColor;
}

/* ---------- 互链与收藏 ---------- */
.page-news .news-bridge {
  padding-block: clamp(2.5rem, 7vw, 5rem) clamp(3rem, 8vw, 6rem);
}

.page-news .bridge-grid {
  display: grid;
  gap: 1rem;
  margin-top: clamp(1.2rem, 3.5vw, 2rem);
}

.page-news .bridge-card {
  display: block;
  border: 1px solid var(--rule);
  border-radius: var(--news-radius);
  padding: 1.1rem 1.15rem 1.25rem;
  color: var(--fg);
  text-decoration: none;
  background: var(--ink-900);
  transition: transform 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-news .bridge-card:hover {
  transform: translateY(-3px);
  border-color: var(--amber);
}

.page-news .bridge-card__no {
  font-size: 0.82rem;
  color: var(--amber);
  margin: 0 0 0.5rem;
}

.page-news .bridge-card h3 {
  font-family: var(--font-head);
  font-size: 1.05rem;
  margin: 0 0 0.45rem;
}

.page-news .bridge-card p {
  margin: 0 0 0.85rem;
  font-size: 0.87rem;
  line-height: 1.75;
  color: var(--fg-muted);
}

.page-news .bridge-card__go {
  font-size: 0.76rem;
  color: var(--celadon);
  letter-spacing: 0.04em;
}

.page-news .bridge-note {
  margin: 1.6rem 0 0;
  padding-top: 1rem;
  border-top: 1px solid var(--rule);
  font-size: 0.83rem;
  line-height: 1.85;
  color: var(--fg-muted);
  max-width: 66ch;
}

.page-news .bridge-note a {
  color: var(--amber);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}

.page-news .bridge-note a:hover {
  color: var(--amber-light);
}

/* ---------- 断点 ---------- */
@media (min-width: 720px) {
  .page-news .timeline {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.4rem 1.6rem;
  }

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

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

  .page-news .feed-item {
    grid-template-columns: auto minmax(0, 1fr) auto;
    align-items: baseline;
  }

  .page-news .feed-item__link {
    grid-column: 3;
    justify-self: end;
  }
}

@media (min-width: 960px) {
  .page-news .hero-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: clamp(2rem, 5vw, 4rem);
  }

  .page-news .latest-grid {
    grid-template-columns: minmax(150px, 190px) minmax(0, 1fr);
    align-items: start;
  }

  .page-news .ver-rail {
    position: sticky;
    top: calc(var(--header-offset) + 1rem);
  }

  .page-news .ver-list {
    flex-direction: column;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-news .ver-list > li {
    flex: 1 1 auto;
  }

  .page-news .ver-link {
    display: flex;
    width: 100%;
    justify-content: space-between;
    border-radius: var(--radius-m);
    border-left: 3px solid var(--line);
    white-space: normal;
  }

  .page-news .ver-link.is-current {
    border-left-color: var(--amber);
  }

  .page-news .cats-grid {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
    align-items: start;
  }

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

  .page-news .rhythm-grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    gap: clamp(2rem, 5vw, 3.5rem);
  }

  .page-news .rhythm-figure {
    position: sticky;
    top: calc(var(--header-offset) + 1rem);
    max-width: none;
  }

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

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

@media (min-width: 1200px) {
  .page-news .timeline {
    gap: 1.4rem 2rem;
  }

  .page-news .hero-facts {
    max-width: 30rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .ver-link,
  .page-news .log-card,
  .page-news .cat,
  .page-news .bridge-card,
  .page-news .feed-item__link {
    transition: none;
  }

  .page-news .ver-link:hover,
  .page-news .log-card:hover,
  .page-news .cat:hover,
  .page-news .bridge-card:hover {
    transform: none;
  }
}