.page-news {
  --news-gap: clamp(16px, 3vw, 28px);
  --news-card-bg: linear-gradient(158deg, rgba(22, 36, 59, .94), rgba(17, 28, 48, .74));
}

/* ---------- 首屏 ---------- */
.page-news .news-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(20px, 5vw, 46px) 0 clamp(18px, 4vw, 34px);
}

.page-news .news-hero__beam {
  position: absolute;
  inset: -12% -6%;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(46% 58% at 84% 14%, var(--glow) 0%, rgba(11, 18, 32, 0) 68%),
    radial-gradient(42% 52% at 8% 88%, rgba(111, 175, 159, .13) 0%, rgba(11, 18, 32, 0) 72%),
    linear-gradient(118deg, rgba(242, 196, 109, .07), rgba(11, 18, 32, 0) 58%);
}

.page-news .news-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(22px, 4vw, 42px);
  align-items: center;
}

.page-news .news-hero h1 {
  margin: .45em 0 .55em;
  font-family: var(--font-display);
  font-size: clamp(1.85rem, 5vw, 3.2rem);
  font-weight: 600;
  line-height: 1.26;
  letter-spacing: .06em;
  color: var(--paper);
  text-shadow: 0 0 34px var(--glow);
}

.page-news .news-hero .lede {
  margin: 0;
  max-width: 34em;
  color: var(--mist);
  font-size: clamp(.95rem, 2.6vw, 1.05rem);
  line-height: 1.85;
}

.page-news .news-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
  color: var(--mist);
  font-size: .84rem;
  letter-spacing: .04em;
}

.page-news .news-hero__meta li {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  padding-left: 14px;
  border-left: 1px solid var(--line-faint);
}

.page-news .news-hero__meta li:first-child {
  padding-left: 0;
  border-left: 0;
}

.page-news .news-hero__meta .u-mono {
  color: var(--gold);
  font-size: 1.02rem;
  letter-spacing: .02em;
}

.page-news .news-hero__figure {
  position: relative;
  margin: 0;
  border-radius: var(--radius);
  border: 1px solid var(--line-faint);
  overflow: hidden;
  box-shadow: 0 26px 60px -42px rgba(242, 196, 109, .7);
}

.page-news .news-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 320px;
  object-fit: cover;
  opacity: .72;
}

/* ---------- 筛选状态条 ---------- */
.page-news .news-filterbar {
  position: sticky;
  top: var(--topbar);
  z-index: 20;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 20px;
  margin-top: clamp(14px, 3vw, 24px);
  padding: 12px 16px;
  background: rgba(17, 28, 48, .88);
  backdrop-filter: blur(10px);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-sm);
  box-shadow: 0 18px 40px -34px rgba(0, 0, 0, .9);
}

.page-news .news-filterbar__item {
  margin: 0;
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  font-size: .84rem;
}

.page-news .news-filterbar__key {
  color: var(--mist);
  letter-spacing: .06em;
}

.page-news .news-filterbar__val {
  color: var(--paper);
}

.page-news .news-filterbar__val.u-mono {
  color: var(--celadon);
  font-size: 1rem;
}

.page-news .news-filterbar__clear {
  margin-left: auto;
  color: var(--gold);
  font-size: .82rem;
  letter-spacing: .05em;
  text-decoration: none;
  border-bottom: 1px solid var(--line-soft);
  padding-bottom: 2px;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.page-news .news-filterbar__clear:hover,
.page-news .news-filterbar__clear:focus-visible {
  color: var(--amber);
  border-bottom-color: var(--amber);
}

/* ---------- 主题带 ---------- */
.page-news .news-topics__intro {
  max-width: 40em;
  margin: 0 0 clamp(18px, 3vw, 26px);
  color: var(--mist);
  font-size: .96rem;
  line-height: 1.85;
}

.page-news .theme-band {
  position: relative;
  margin: 0 0 clamp(16px, 3vw, 24px);
  border-radius: var(--radius);
  border: 1px solid var(--line-faint);
  overflow: hidden;
}

.page-news .theme-band img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 150px;
  object-fit: cover;
  opacity: .46;
}

.page-news .news-tabs {
  margin-top: 4px;
}

.page-news .news-tabs__rail {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 8px;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.page-news .news-tabs__rail::-webkit-scrollbar {
  height: 4px;
}

.page-news .news-tabs__rail::-webkit-scrollbar-thumb {
  background: var(--line-soft);
  border-radius: 2px;
}

.page-news .news-tabs__rail .tabs__btn {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 10px 15px;
  background: transparent;
  color: var(--mist);
  border: 1px solid var(--line-faint);
  border-bottom: 2px solid transparent;
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: .9rem;
  letter-spacing: .06em;
  cursor: pointer;
  transition: color .2s var(--ease), border-color .2s var(--ease), background .2s var(--ease);
}

.page-news .news-tabs__rail .tabs__btn:hover,
.page-news .news-tabs__rail .tabs__btn:focus-visible {
  color: var(--paper);
  border-color: var(--line-soft);
}

.page-news .news-tabs__rail .tabs__btn[aria-selected="true"] {
  color: var(--gold);
  border-color: var(--line-soft);
  border-bottom-color: var(--celadon);
  background: rgba(111, 175, 159, .09);
  box-shadow: inset 0 -10px 24px -20px var(--celadon);
}

.page-news .news-tabs__no {
  font-size: .7rem;
  letter-spacing: .08em;
  color: var(--celadon);
}

.page-news .news-tabs__rail .tabs__btn[aria-selected="true"] .news-tabs__no {
  color: var(--amber);
}

.page-news .news-tabs__panel {
  padding-top: clamp(16px, 3vw, 24px);
}

.page-news .news-tabs__note {
  margin: 0 0 14px;
  padding-left: 12px;
  border-left: 2px solid var(--line-soft);
  color: var(--mist);
  font-size: .88rem;
  line-height: 1.7;
}

/* ---------- 专题卡片 ---------- */
.page-news .topic-grid {
  display: grid;
  gap: var(--news-gap);
  grid-template-columns: minmax(0, 1fr);
}

.page-news .topic-card {
  position: relative;
  padding: 18px 16px 16px;
  background: var(--news-card-bg);
  border: 1px solid var(--line-faint);
  border-radius: var(--radius-sm);
  transition: border-color .22s var(--ease), box-shadow .22s var(--ease);
}

.page-news .topic-card:hover,
.page-news .topic-card:focus-within {
  border-color: var(--line-soft);
  box-shadow: 0 0 0 1px var(--glow), 0 20px 42px -34px rgba(242, 196, 109, .85);
}

.page-news .topic-card .exhibit-label {
  display: inline-block;
  margin-bottom: 8px;
  color: var(--celadon);
  font-size: .7rem;
  letter-spacing: .12em;
}

.page-news .topic-card__no {
  margin: 0;
  color: var(--line);
  font-size: .74rem;
  letter-spacing: .1em;
}

.page-news .topic-card__title {
  margin: 6px 0 10px;
  font-family: var(--font-display);
  font-size: clamp(1rem, 2.8vw, 1.12rem);
  font-weight: 600;
  line-height: 1.5;
  letter-spacing: .03em;
  color: var(--paper);
}

.page-news .topic-card__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 0 0 10px;
  font-size: .76rem;
}

.page-news .topic-card__time {
  color: var(--mist);
  letter-spacing: .06em;
}

.page-news .topic-card__sum {
  margin: 0;
  color: var(--mist);
  font-size: .88rem;
  line-height: 1.8;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: color .22s var(--ease);
}

.page-news .topic-card:hover .topic-card__sum,
.page-news .topic-card:focus-within .topic-card__sum {
  -webkit-line-clamp: unset;
  color: #c6d2e2;
}

.page-news .topic-card__cover {
  margin: 0 0 14px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1px solid var(--line-faint);
}

.page-news .topic-card__cover .media-frame__img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 260px;
  object-fit: cover;
}

.page-news .topic-card--feature {
  background:
    linear-gradient(158deg, rgba(242, 196, 109, .1), rgba(17, 28, 48, .86) 46%),
    var(--news-card-bg);
  border-color: var(--line-soft);
}

/* ---------- 时间轴 ---------- */
.page-news .news-timeline__intro {
  max-width: 40em;
  margin: 0 0 clamp(18px, 3vw, 26px);
  color: var(--mist);
  font-size: .96rem;
  line-height: 1.85;
}

.page-news .timeline {
  display: grid;
  gap: clamp(20px, 4vw, 36px);
}

.page-news .timeline__figure {
  margin: 0;
  border-radius: var(--radius);
  border: 1px solid var(--line-faint);
  overflow: hidden;
  align-self: start;
}

.page-news .timeline__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  opacity: .62;
}

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

.page-news .timeline__list::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: linear-gradient(180deg, var(--glow), var(--line-soft) 40%, rgba(184, 135, 62, 0) 100%);
}

.page-news .timeline__item {
  position: relative;
  padding: 0 0 22px 30px;
}

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

.page-news .timeline__node {
  position: absolute;
  left: 0;
  top: 5px;
  width: 15px;
  height: 15px;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: var(--ink);
}

.page-news .timeline__item.is-current .timeline__node {
  background: var(--gold);
  border-color: var(--gold);
  box-shadow: 0 0 0 4px var(--glow), 0 0 16px rgba(242, 196, 109, .55);
}

.page-news .timeline__when {
  margin: 0 0 4px;
  color: var(--celadon);
  font-size: .74rem;
  letter-spacing: .1em;
}

.page-news .timeline__item.is-current .timeline__when {
  color: var(--gold);
}

.page-news .timeline__head {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: .04em;
  color: var(--paper);
}

.page-news .timeline__text {
  margin: 0;
  color: var(--mist);
  font-size: .88rem;
  line-height: 1.8;
}

.page-news .news-timeline__note {
  margin: clamp(18px, 3vw, 26px) 0 0;
  color: var(--mist);
  font-size: .86rem;
  line-height: 1.8;
}

.page-news .news-timeline__note a {
  color: var(--gold);
  text-decoration: none;
  border-bottom: 1px solid var(--line-soft);
}

.page-news .news-timeline__note a:hover,
.page-news .news-timeline__note a:focus-visible {
  color: var(--amber);
  border-bottom-color: var(--amber);
}

/* ---------- 筛选说明 ---------- */
.page-news .news-guide__grid {
  display: grid;
  gap: var(--news-gap);
  align-items: start;
}

.page-news .news-guide__copy p {
  margin: 0 0 14px;
  color: var(--mist);
  font-size: .94rem;
  line-height: 1.85;
}

.page-news .news-guide__copy .btn {
  margin-top: 6px;
}

.page-news .news-guide__panel {
  padding: 20px 18px;
  border-color: var(--line-faint);
  background: linear-gradient(170deg, rgba(22, 36, 59, .9), rgba(11, 18, 32, .7));
}

.page-news .news-guide__panel .exhibit-label {
  display: inline-block;
  margin-bottom: 14px;
  color: var(--celadon);
  font-size: .7rem;
  letter-spacing: .12em;
}

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

.page-news .news-guide__list li {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 10px;
  align-items: start;
  padding-top: 12px;
  border-top: 1px solid var(--line-faint);
  color: var(--mist);
  font-size: .88rem;
  line-height: 1.75;
}

.page-news .news-guide__list li:first-child {
  padding-top: 0;
  border-top: 0;
}

.page-news .news-guide__step {
  color: var(--gold);
  font-size: .78rem;
  letter-spacing: .08em;
}

/* ---------- 下一步 ---------- */
.page-news .next-grid {
  display: grid;
  gap: var(--news-gap);
  margin-top: clamp(18px, 3vw, 26px);
}

.page-news .next-card {
  position: relative;
  display: block;
  padding: 20px 18px 18px;
  text-decoration: none;
  color: inherit;
  background: rgba(17, 28, 48, .72);
  border: 1px solid var(--line-faint);
  border-radius: var(--radius-sm);
  transition: border-color .22s var(--ease), transform .22s var(--ease), box-shadow .22s var(--ease);
}

.page-news .next-card:hover,
.page-news .next-card:focus-visible {
  border-color: var(--line-soft);
  transform: translateY(-3px);
  box-shadow: 0 22px 46px -36px rgba(242, 196, 109, .9);
}

.page-news .next-card__no {
  display: inline-block;
  margin-bottom: 10px;
  color: var(--amber);
  font-size: .74rem;
  letter-spacing: .14em;
}

.page-news .next-card__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 1.04rem;
  font-weight: 600;
  letter-spacing: .04em;
  color: var(--paper);
}

.page-news .next-card__text {
  margin: 0 0 14px;
  color: var(--mist);
  font-size: .87rem;
  line-height: 1.78;
}

.page-news .next-card__go {
  display: inline-block;
  color: var(--gold);
  font-size: .8rem;
  letter-spacing: .06em;
  border-bottom: 1px solid var(--line-soft);
  padding-bottom: 2px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-news .news-hero__figure img {
    max-height: 380px;
  }

  .page-news .news-filterbar {
    padding: 14px 20px;
  }

  .page-news .news-filterbar__item {
    font-size: .86rem;
  }

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

  .page-news .topic-card--feature {
    grid-column: 1 / -1;
    display: grid;
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
    grid-template-areas:
      "cover label"
      "cover no"
      "cover title"
      "cover meta"
      "cover sum";
    gap: 0 22px;
    align-content: start;
    padding: 20px;
  }

  .page-news .topic-card--feature .topic-card__cover {
    grid-area: cover;
    margin: 0;
    align-self: stretch;
  }

  .page-news .topic-card--feature .topic-card__cover .media-frame__img {
    height: 100%;
    max-height: none;
    object-fit: cover;
  }

  .page-news .topic-card--feature .exhibit-label { grid-area: label; }
  .page-news .topic-card--feature .topic-card__no { grid-area: no; }
  .page-news .topic-card--feature .topic-card__title { grid-area: title; }
  .page-news .topic-card--feature .topic-card__meta { grid-area: meta; }
  .page-news .topic-card--feature .topic-card__sum { grid-area: sum; }

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

@media (min-width: 960px) {
  .page-news .news-hero__grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr);
  }

  .page-news .news-hero__figure img {
    max-height: 420px;
  }

  .page-news .news-filterbar {
    top: 12px;
  }

  .page-news .news-tabs__rail {
    gap: 10px;
    overflow-x: visible;
    flex-wrap: wrap;
  }

  .page-news .theme-band img {
    max-height: 180px;
  }

  .page-news .topic-grid {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    align-items: start;
  }

  .page-news .topic-grid > .topic-card {
    grid-column: span 6;
  }

  .page-news .topic-grid > .topic-card--feature {
    grid-column: span 12;
  }

  .page-news .topic-grid > .topic-card:not(.topic-card--feature):nth-child(2) {
    margin-top: 30px;
  }

  .page-news .timeline {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
  }

  .page-news .timeline__figure {
    position: sticky;
    top: 90px;
  }

  .page-news .news-guide__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: clamp(24px, 4vw, 44px);
  }

  .page-news .news-guide__panel {
    padding: 24px 22px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .next-card,
  .page-news .topic-card,
  .page-news .news-filterbar__clear {
    transition: none;
  }

  .page-news .next-card:hover,
  .page-news .next-card:focus-visible {
    transform: none;
  }
}