.page-news {
  --news-cut: 20px;
  --news-gap: clamp(20px, 4vw, 56px);
  background: var(--ink);
  color: var(--on-dark);
}

/* ---------- 首屏 ---------- */
.page-news .topics-hero {
  position: relative;
  padding: calc(var(--header-h) + 32px) 0 0;
  background:
    radial-gradient(120% 90% at 12% 0%, rgba(18, 76, 60, 0.9) 0%, rgba(11, 59, 46, 0) 62%),
    linear-gradient(180deg, var(--ink) 0%, var(--ink-deep) 100%);
  overflow: hidden;
}

.page-news .topics-hero__inner {
  display: grid;
  gap: 28px;
}

.page-news .topics-hero__frame {
  position: relative;
  padding: clamp(24px, 4vw, 44px);
  border: 1px solid var(--line);
  border-left: 3px solid var(--amber);
  background: linear-gradient(150deg, rgba(18, 76, 60, 0.55), rgba(6, 35, 27, 0.25));
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--news-cut)), calc(100% - var(--news-cut)) 100%, 0 100%);
}

.page-news .topics-hero__title {
  margin: 18px 0 0;
  font-size: clamp(36px, 7.4vw, 82px);
  font-weight: 900;
  line-height: 1.02;
  letter-spacing: -0.02em;
  color: #fff;
}

.page-news .topics-hero__lede {
  margin-top: 22px;
  max-width: 36em;
  font-size: 17px;
  line-height: 1.75;
  color: var(--on-dark);
}

.page-news .topics-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 30px;
}

.page-news .topics-hero__side {
  border-top: 1px solid var(--line-soft);
  padding-top: 22px;
}

.page-news .hero-facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px 20px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-news .hero-facts li {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding-left: 12px;
  border-left: 1px solid var(--line);
}

.page-news .hero-facts__num {
  font-size: 22px;
  font-weight: 700;
  color: var(--amber-soft);
  letter-spacing: 0.02em;
}

.page-news .hero-facts__label {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--gray-green);
}

.page-news .topics-hero__media {
  margin-top: clamp(28px, 5vw, 52px);
  height: clamp(170px, 26vw, 330px);
  border-top: 1px solid var(--line);
  overflow: hidden;
}

.page-news .topics-hero__media .media__img {
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
  display: block;
  filter: saturate(0.85) contrast(1.05);
}

/* ---------- 通用区块 ---------- */
.page-news .topic-block {
  padding: clamp(56px, 9vw, 106px) 0;
  background: var(--ink);
}

.page-news .topic-block--deep {
  background: linear-gradient(180deg, var(--ink-deep) 0%, var(--ink) 100%);
}

.page-news .topic-block--paper {
  background: var(--paper);
  color: var(--char);
}

.page-news .topic-block--cta {
  background:
    linear-gradient(180deg, var(--ink) 0%, var(--ink-deep) 100%);
  border-top: 1px solid var(--line);
}

.page-news .topic-block__head {
  max-width: 46em;
  margin-bottom: clamp(30px, 5vw, 54px);
}

.page-news .topic-block__head h2 {
  margin: 14px 0 0;
  font-size: clamp(26px, 4vw, 46px);
  font-weight: 800;
  line-height: 1.16;
  letter-spacing: -0.01em;
  color: #fff;
}

.page-news .topic-block--paper .topic-block__head h2 {
  color: var(--char);
}

.page-news .topic-block--paper .index-label {
  color: var(--ink);
}

.page-news .topic-block__meta {
  margin: 16px 0 0;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--amber-soft);
}

.page-news .topic-block__lede {
  margin: 18px 0 0;
  font-size: 17px;
  line-height: 1.75;
  color: var(--on-dark);
  max-width: 38em;
}

.page-news .topic-block--paper .topic-block__lede {
  color: rgba(26, 26, 26, 0.78);
}

/* ---------- 最新一期 ---------- */
.page-news .issue-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 26px;
}

.page-news .issue-list__item {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  gap: 16px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--line-soft);
}

.page-news .issue-list__item:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-news .issue-list__no {
  font-size: 15px;
  font-weight: 700;
  color: var(--amber);
  padding-top: 4px;
}

.page-news .issue-list__text h3 {
  margin: 0 0 8px;
  font-size: 20px;
  font-weight: 700;
  color: #fff;
}

.page-news .issue-list__text p {
  margin: 0 0 12px;
  font-size: 16px;
  line-height: 1.75;
  color: var(--on-dark);
  max-width: 34em;
}

.page-news .topic-block__aside {
  display: grid;
  gap: 18px;
  align-content: start;
}

.page-news .side-card {
  padding: 22px;
}

.page-news .side-card__text {
  margin: 12px 0 16px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--on-dark);
}

.page-news .tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
}

.page-news .link-arrow {
  display: inline-block;
  font-size: 14px;
  letter-spacing: 0.04em;
  color: var(--amber-soft);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  padding-bottom: 3px;
}

.page-news .link-arrow:hover {
  color: #fff;
  border-color: var(--coral);
}

/* ---------- 改版纪实 ---------- */
.page-news .revision-layout {
  display: grid;
  gap: clamp(28px, 5vw, 56px);
}

.page-news .revision-figure {
  margin: 0 0 clamp(30px, 5vw, 48px);
  border: 1px solid var(--line-soft);
  background: var(--ink-deep);
  overflow: hidden;
}

.page-news .revision-figure .media__img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

.page-news .media__caption {
  padding: 12px 16px;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--gray-green);
  border-top: 1px solid var(--line-soft);
}

.page-news .timeline {
  position: relative;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-news .timeline::before {
  content: "";
  position: absolute;
  left: 15px;
  top: 10px;
  bottom: 14px;
  width: 1px;
  background: linear-gradient(180deg, var(--amber) 0%, var(--coral) 55%, rgba(232, 106, 51, 0) 100%);
}

.page-news .timeline__item {
  position: relative;
  padding: 0 0 34px 52px;
}

.page-news .timeline__item:last-child {
  padding-bottom: 0;
}

.page-news .timeline__node {
  position: absolute;
  left: 0;
  top: 2px;
  width: 32px;
  height: 32px;
  display: grid;
  place-items: center;
  font-size: 12px;
  font-weight: 700;
  color: var(--ink-deep);
  background: var(--amber);
  border: 1px solid var(--amber);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 9px), calc(100% - 9px) 100%, 0 100%);
}

.page-news .timeline__item--current .timeline__node {
  background: var(--coral);
  border-color: var(--amber-soft);
  color: #fff;
  transform: scale(1.16);
  box-shadow: 0 0 0 6px rgba(232, 106, 51, 0.16);
}

.page-news .timeline__item h3 {
  margin: 0 0 10px;
  font-size: 21px;
  font-weight: 700;
  color: #fff;
}

.page-news .timeline__item p {
  margin: 0;
  font-size: 16px;
  line-height: 1.78;
  color: var(--on-dark);
  max-width: 34em;
}

.page-news .revision-toc {
  align-self: start;
  padding: 20px 22px;
  border: 1px solid var(--line);
  background: rgba(6, 35, 27, 0.5);
}

.page-news .revision-toc__list {
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}

.page-news .revision-toc__list a {
  display: block;
  font-size: 15px;
  color: var(--on-dark);
  text-decoration: none;
  padding-left: 14px;
  border-left: 2px solid transparent;
  transition: color 0.25s var(--ease), border-color 0.25s var(--ease);
}

.page-news .revision-toc__list a:hover,
.page-news .revision-toc__list a[aria-current="true"] {
  color: var(--amber-soft);
  border-left-color: var(--coral);
}

/* ---------- 分类专题 ---------- */
.page-news .cat-layout {
  display: grid;
  gap: clamp(26px, 4vw, 48px);
}

.page-news .cat-grid {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 16px;
}

.page-news .cat-card {
  padding: 20px 20px 18px;
  background: var(--ink-lift);
  border-left: 3px solid var(--amber);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 14px), calc(100% - 14px) 100%, 0 100%);
  transition: background 0.3s var(--ease), transform 0.3s var(--ease);
}

.page-news .cat-card:nth-child(3n + 2) {
  border-left-color: var(--coral);
}

.page-news .cat-card:nth-child(3n + 3) {
  border-left-color: var(--cyan);
}

.page-news .cat-card:hover {
  background: rgba(18, 76, 60, 0.92);
  transform: translateY(-3px);
}

.page-news .cat-card__name {
  margin: 0 0 12px;
  font-size: 18px;
  font-weight: 700;
  color: #fff;
}

.page-news .cat-card__num {
  margin: 0;
  font-size: 15px;
  color: var(--amber-soft);
  letter-spacing: 0.03em;
}

.page-news .cat-card__time {
  margin: 8px 0 0;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--gray-green);
}

.page-news .cat-figure {
  margin: 0;
  border: 1px solid var(--line-soft);
  background: var(--ink-deep);
  overflow: hidden;
}

.page-news .cat-figure .media__img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 周报归档 ---------- */
.page-news .archive-band {
  height: clamp(84px, 14vw, 150px);
  overflow: hidden;
  margin-bottom: clamp(26px, 4vw, 44px);
  border-top: 1px solid rgba(212, 160, 23, 0.4);
  border-bottom: 1px solid rgba(212, 160, 23, 0.4);
}

.page-news .archive-band .media__img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
}

.page-news .archive-layout {
  display: grid;
  gap: 28px;
}

.page-news .archive-filter {
  padding: 22px 20px;
  background: #fff;
  border-left: 3px solid var(--ink);
}

.page-news .archive-filter .index-label {
  color: var(--ink);
}

.page-news .archive-filter .filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}

.page-news .filter-chip {
  appearance: none;
  cursor: pointer;
  font-family: var(--font-sans);
  font-size: 13px;
  line-height: 1;
  padding: 9px 13px;
  color: var(--char);
  background: var(--paper);
  border: 1px solid rgba(26, 26, 26, 0.14);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%);
  transition: background 0.25s var(--ease), color 0.25s var(--ease), border-color 0.25s var(--ease);
}

.page-news .filter-chip:hover {
  border-color: var(--ink);
}

.page-news .filter-chip[aria-pressed="true"] {
  background: var(--ink);
  color: var(--amber-soft);
  border-color: var(--ink);
}

.page-news .archive-filter__count {
  margin: 18px 0 0;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: rgba(26, 26, 26, 0.7);
}

.page-news .archive-filter__count .mono {
  color: var(--ink);
  font-weight: 700;
}

.page-news .filter-empty {
  margin: 12px 0 0;
  font-size: 13px;
  line-height: 1.6;
  color: var(--coral);
}

.page-news .archive-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

.page-news .week-card {
  padding: 22px 22px 20px;
  background: var(--ink-lift);
  border: 1px solid var(--line-soft);
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 0 100%);
  transition: border-color 0.3s var(--ease), background 0.3s var(--ease);
}

.page-news .week-card:hover {
  border-color: var(--line);
  background: rgba(18, 76, 60, 0.94);
}

.page-news .week-card__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}

.page-news .week-card__no {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--amber-soft);
  padding: 4px 8px;
  border: 1px solid var(--line);
}

.page-news .week-card__title {
  margin: 0 0 14px;
  font-size: 19px;
  font-weight: 700;
  line-height: 1.35;
  color: #fff;
}

.page-news .week-card__points {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
}

.page-news .week-card__points li {
  position: relative;
  padding-left: 16px;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--on-dark);
}

.page-news .week-card__points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.7em;
  width: 6px;
  height: 1px;
  background: var(--amber);
}

.page-news .week-card__extra {
  max-height: 0;
  margin: 0;
  overflow: hidden;
  opacity: 0;
  font-size: 12px;
  letter-spacing: 0.05em;
  color: var(--cyan);
  transition: max-height 0.3s var(--ease), opacity 0.3s var(--ease), margin 0.3s var(--ease);
}

.page-news .week-card:hover .week-card__extra {
  max-height: 60px;
  margin-top: 12px;
  opacity: 1;
}

.page-news .week-card__time {
  margin: 14px 0 0;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--gray-green);
}

/* ---------- 术语与资料 ---------- */
.page-news .terms-grid {
  display: grid;
  gap: 20px;
}

.page-news .terms-card {
  padding: 26px 24px;
  border: 1px solid var(--line-soft);
  background: linear-gradient(160deg, rgba(18, 76, 60, 0.6), rgba(6, 35, 27, 0.35));
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 18px), calc(100% - 18px) 100%, 0 100%);
}

.page-news .terms-card__title {
  margin: 0;
  font-size: 22px;
  font-weight: 700;
  color: #fff;
}

.page-news .terms-card__num {
  margin: 12px 0 18px;
  font-size: 30px;
  font-weight: 700;
  color: var(--coral);
  letter-spacing: 0.01em;
}

.page-news .terms-card__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}

.page-news .terms-card__list li {
  position: relative;
  padding-left: 18px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--on-dark);
}

.page-news .terms-card__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.75em;
  width: 8px;
  height: 1px;
  background: var(--cyan);
}

/* ---------- 订阅与回访 ---------- */
.page-news .follow-layout {
  display: grid;
  gap: clamp(28px, 5vw, 56px);
}

.page-news .follow-main h2 {
  margin: 14px 0 0;
  font-size: clamp(26px, 4vw, 46px);
  font-weight: 800;
  line-height: 1.16;
  color: #fff;
}

.page-news .follow-lede {
  margin: 20px 0 0;
  max-width: 34em;
  font-size: 17px;
  line-height: 1.78;
  color: var(--on-dark);
}

.page-news .follow-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 30px;
}

.page-news .follow-steps {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 22px;
}

.page-news .follow-steps__item {
  padding: 20px 22px;
  border-top: 1px solid var(--line);
  background: rgba(6, 35, 27, 0.45);
}

.page-news .follow-steps__no {
  display: block;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--coral);
  margin-bottom: 10px;
}

.page-news .follow-steps__item h3 {
  margin: 0 0 8px;
  font-size: 18px;
  font-weight: 700;
  color: #fff;
}

.page-news .follow-steps__item p {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--on-dark);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-news .terms-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .page-news .hero-facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-news .topics-hero__inner {
    grid-template-columns: minmax(0, 1.62fr) minmax(0, 1fr);
    align-items: end;
  }

  .page-news .topics-hero__side {
    border-top: 0;
    border-left: 1px solid var(--line-soft);
    padding: 0 0 6px 28px;
  }

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

  .page-news .revision-layout {
    grid-template-columns: minmax(0, 1fr) 236px;
    align-items: start;
  }

  .page-news .revision-toc {
    position: sticky;
    top: calc(var(--header-h-scrolled) + 24px);
  }

  .page-news .cat-layout {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-news .archive-layout {
    grid-template-columns: 244px minmax(0, 1fr);
    align-items: start;
  }

  .page-news .archive-filter {
    position: sticky;
    top: calc(var(--header-h-scrolled) + 24px);
  }

  .page-news .follow-layout {
    grid-template-columns: minmax(0, 1fr) 300px;
    align-items: start;
  }
}

@media (min-width: 1120px) {
  .page-news .archive-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .cat-card,
  .page-news .week-card,
  .page-news .week-card__extra,
  .page-news .filter-chip,
  .page-news .revision-toc__list a {
    transition: none;
  }

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