.page-news {
  --news-rail-w: 258px;
  --news-hair: 1px solid var(--green-500);
  --news-card: var(--green-700);
  background: var(--green-900);
  color: var(--paper);
  min-width: 0;
}

.page-news .shell {
  min-width: 0;
}

/* ---------- 首屏 ---------- */
.page-news .news-hero {
  padding-block: clamp(28px, 5vw, 48px) clamp(40px, 6vw, 72px);
  background:
    radial-gradient(1100px 520px at 88% -10%, rgba(47, 240, 196, .14), transparent 62%),
    radial-gradient(760px 420px at 4% 110%, rgba(20, 82, 58, .5), transparent 68%);
}

.page-news .breadcrumb {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--mist);
  margin-bottom: clamp(22px, 4vw, 40px);
}

.page-news .breadcrumb a {
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .18s var(--ease), border-color .18s var(--ease);
}

.page-news .breadcrumb a:hover {
  color: var(--cyan-400);
  border-bottom-color: var(--cyan-400);
}

.page-news .breadcrumb__sep {
  color: var(--green-500);
}

.page-news .breadcrumb [aria-current="page"] {
  color: var(--paper);
}

.page-news .news-hero__grid {
  display: grid;
  gap: var(--gap-m);
  align-items: end;
}

.page-news .news-hero__title {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(30px, 5vw, 52px);
  line-height: 1.22;
  letter-spacing: -0.01em;
  margin: 14px 0 18px;
  max-width: 20ch;
}

.page-news .news-hero__lead {
  max-width: 58ch;
  color: #D6E3DC;
}

.page-news .news-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(20px, 3vw, 32px);
}

.page-news .news-hero__board {
  padding: clamp(20px, 3vw, 30px);
  border-radius: var(--r-l);
  position: relative;
}

.page-news .news-hero__time {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(48px, 9vw, 78px);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--cyan-400);
  font-variant-numeric: tabular-nums;
  margin: 10px 0 6px;
}

.page-news .news-hero__timesub {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--mist);
}

.page-news .news-hero__mini {
  margin: 22px 0 0;
  display: grid;
  gap: 0;
  border-top: var(--news-hair);
}

.page-news .news-hero__minirow {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  padding: 11px 0;
  border-bottom: var(--news-hair);
}

.page-news .news-hero__minirow dt {
  font-size: 13px;
  color: var(--mist);
}

.page-news .news-hero__minirow dd {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 15px;
  color: var(--paper);
  font-variant-numeric: tabular-nums;
}

.page-news .news-hero__svg {
  display: block;
  width: 100%;
  height: auto;
  margin-top: 20px;
}

.page-news .news-hero__svgcap {
  margin: 4px 0 0;
  font-size: 12px;
  line-height: 1.6;
  color: var(--mist);
}

/* ---------- 系列带 ---------- */
.page-news .news-series {
  border-block: var(--news-hair);
  padding-block: clamp(28px, 4vw, 44px);
}

.page-news .section__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px 24px;
  margin-bottom: clamp(20px, 3vw, 32px);
}

.page-news .news-series__title,
.page-news .news-feed__title,
.page-news .news-versions__title,
.page-news .news-bridge__title,
.page-news .news-rhythm__title {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(22px, 3vw, 32px);
  line-height: 1.3;
  margin: 0;
  color: var(--paper);
}

.page-news .news-series__note,
.page-news .news-feed__note,
.page-news .news-versions__note,
.page-news .news-bridge__note {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .07em;
  color: var(--mist);
}

.page-news .news-series__track {
  list-style: none;
  margin: 0;
  padding: 0 0 10px;
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: 78%;
  gap: var(--gap-s);
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}

.page-news .news-series__item {
  scroll-snap-align: start;
  background: var(--news-card);
  border: var(--news-hair);
  border-radius: var(--r-m);
  padding: 20px;
  min-width: 0;
  transition: border-color .18s var(--ease), transform .24s var(--ease);
}

.page-news .news-series__item:hover {
  border-color: var(--cyan-400);
  transform: translateY(-3px);
}

.page-news .news-series__item:nth-child(odd) {
  border-top-left-radius: var(--r-l);
}

.page-news .news-series__name {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 20px;
  margin: 10px 0 6px;
  color: var(--paper);
}

.page-news .news-series__freq {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--amber);
  margin: 0 0 10px;
}

.page-news .news-series__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: #C7D6CE;
}

/* ---------- 条目流 ---------- */
.page-news .news-feed {
  padding-block: clamp(40px, 6vw, 72px);
}

.page-news .news-feed__grid {
  display: grid;
  gap: var(--gap-m);
  min-width: 0;
}

.page-news .news-feed__rail {
  min-width: 0;
}

.page-news .news-feed__rail .tabs__list {
  display: flex;
  gap: 6px;
  overflow-x: auto;
  padding-bottom: 6px;
  -webkit-overflow-scrolling: touch;
}

.page-news .news-feed__rail .tab {
  flex: 0 0 auto;
  appearance: none;
  background: transparent;
  border: var(--news-hair);
  border-radius: 999px;
  color: var(--mist);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  padding: 9px 16px;
  cursor: pointer;
  white-space: nowrap;
  transition: color .18s var(--ease), border-color .18s var(--ease), background-color .18s var(--ease);
}

.page-news .news-feed__rail .tab:hover {
  color: var(--paper);
  border-color: var(--cyan-200);
}

.page-news .news-feed__rail .tab[aria-selected="true"] {
  color: var(--green-900);
  background: var(--cyan-400);
  border-color: var(--cyan-400);
  font-weight: 600;
}

.page-news .news-feed__railnote {
  margin: 14px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
}

.page-news .news-feed__stream {
  min-width: 0;
}

.page-news .tab-panel:focus-visible {
  outline: 2px solid var(--cyan-400);
  outline-offset: 4px;
}

.page-news .news-list {
  display: grid;
  gap: var(--gap-s);
}

.page-news .news-item {
  position: relative;
  background: var(--news-card);
  border: var(--news-hair);
  border-radius: var(--r-m);
  padding: 22px 20px 20px;
  min-width: 0;
  overflow: hidden;
  transition: border-color .18s var(--ease);
}

.page-news .news-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 18px;
  bottom: 18px;
  width: 2px;
  background: var(--green-500);
  transition: background-color .18s var(--ease);
}

.page-news .news-item:hover {
  border-color: rgba(47, 240, 196, .5);
}

.page-news .news-item:hover::before {
  background: var(--cyan-400);
}

.page-news .news-item__num {
  position: absolute;
  top: 10px;
  right: 16px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(30px, 6vw, 46px);
  line-height: 1;
  letter-spacing: -0.02em;
  color: rgba(47, 240, 196, .14);
  font-variant-numeric: tabular-nums;
  pointer-events: none;
}

.page-news .news-item__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 0 0 12px;
}

.page-news .news-item__title {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(18px, 2.4vw, 23px);
  line-height: 1.4;
  margin: 0 0 10px;
  color: var(--paper);
  max-width: 34ch;
  background-image: linear-gradient(var(--cyan-400), var(--cyan-400));
  background-repeat: no-repeat;
  background-position: 0 100%;
  background-size: 0 2px;
  transition: background-size .24s var(--ease);
}

.page-news .news-item:hover .news-item__title {
  background-size: 100% 2px;
}

.page-news .news-item__excerpt {
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.78;
  color: #C7D6CE;
  max-width: 62ch;
}

.page-news .news-item__link {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .07em;
  color: var(--cyan-400);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 240, 196, .4);
  padding-bottom: 2px;
  transition: border-color .18s var(--ease), color .18s var(--ease);
}

.page-news .news-item__link:hover {
  color: var(--cyan-200);
  border-bottom-color: var(--cyan-200);
}

.page-news .news-item__media {
  margin-bottom: 16px;
}

.page-news .news-item--lead {
  padding-top: 24px;
}

.page-news .news-item--slim {
  padding-left: 20px;
}

.page-news .news-item--slim .news-item__meta {
  margin-bottom: 6px;
}

/* accordion 在条目内 */
.page-news .news-item .accordion__trigger {
  width: 100%;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 14px;
  text-align: left;
  background: transparent;
  border: 0;
  padding: 0;
  cursor: pointer;
  color: inherit;
  font: inherit;
}

.page-news .news-item .accordion__trigger .news-item__title {
  margin-bottom: 0;
  flex: 1 1 auto;
}

.page-news .news-item .accordion__icon {
  flex: 0 0 auto;
  width: 22px;
  height: 22px;
  border: var(--news-hair);
  border-radius: 50%;
  position: relative;
  margin-top: 4px;
  transition: border-color .18s var(--ease), background-color .18s var(--ease);
}

.page-news .news-item .accordion__icon::before,
.page-news .news-item .accordion__icon::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  background: var(--cyan-400);
  transform: translate(-50%, -50%);
  transition: opacity .18s var(--ease);
}

.page-news .news-item .accordion__icon::before {
  width: 10px;
  height: 1.5px;
}

.page-news .news-item .accordion__icon::after {
  width: 1.5px;
  height: 10px;
}

.page-news .news-item .accordion__trigger[aria-expanded="true"] .accordion__icon {
  border-color: var(--cyan-400);
  background: rgba(47, 240, 196, .12);
}

.page-news .news-item .accordion__trigger[aria-expanded="true"] .accordion__icon::after {
  opacity: 0;
}

.page-news .news-item .accordion__panel {
  padding-top: 14px;
}

/* 系列筛选的精简列表 */
.page-news .news-mini {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--gap-s);
}

.page-news .news-mini__item {
  background: var(--news-card);
  border: var(--news-hair);
  border-left: 2px solid var(--cyan-400);
  border-radius: var(--r-s);
  padding: 18px 20px;
}

.page-news .news-mini__title {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 18px;
  line-height: 1.45;
  margin: 8px 0 8px;
  color: var(--paper);
}

.page-news .news-mini__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- 版本更新 ---------- */
.page-news .news-versions {
  padding-block: clamp(44px, 6vw, 76px);
}

.page-news .news-versions__grid {
  display: grid;
  gap: var(--gap-m);
}

.page-news .news-versions__media {
  border-radius: var(--r-m);
  overflow: hidden;
  border: var(--news-hair);
}

.page-news .news-track {
  list-style: none;
  margin: 0;
  padding: 0 0 0 22px;
  display: grid;
  gap: var(--gap-s);
  position: relative;
}

.page-news .news-track::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: var(--green-500);
}

.page-news .news-track__node {
  position: relative;
  padding-left: 4px;
}

.page-news .news-track__node::before {
  content: "";
  position: absolute;
  left: -21px;
  top: 7px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--green-700);
  border: 1.5px solid var(--cyan-400);
  transition: background-color .18s var(--ease), box-shadow .18s var(--ease);
}

.page-news .news-track__node:hover::before {
  background: var(--cyan-400);
  box-shadow: 0 0 0 5px rgba(47, 240, 196, .16);
}

.page-news .news-track__title {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 19px;
  line-height: 1.4;
  margin: 8px 0 8px;
  color: var(--paper);
}

.page-news .news-track__desc {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: #C7D6CE;
  max-width: 56ch;
}

.page-news .news-versions__foot {
  margin: clamp(24px, 4vw, 36px) 0 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--mist);
}

.page-news .news-versions__foot a {
  color: var(--cyan-400);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 240, 196, .4);
}

.page-news .news-versions__foot a:hover {
  color: var(--cyan-200);
}

/* ---------- 更新节奏 ---------- */
.page-news .news-rhythm {
  padding-block: clamp(44px, 6vw, 80px);
  background:
    linear-gradient(150deg, rgba(255, 176, 32, .07), transparent 42%),
    var(--green-900);
}

.page-news .news-rhythm__grid {
  display: grid;
  gap: var(--gap-m);
}

.page-news .news-rhythm__clock {
  border-left: 3px solid var(--amber);
  padding-left: 20px;
}

.page-news .news-rhythm__num {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(52px, 11vw, 96px);
  line-height: .95;
  letter-spacing: -0.02em;
  color: var(--cyan-400);
  font-variant-numeric: tabular-nums;
  margin: 12px 0 8px;
}

.page-news .news-rhythm__sub {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--amber);
  margin: 0;
}

.page-news .news-rhythm__title {
  margin-bottom: 16px;
}

.page-news .news-rhythm__body p {
  margin: 0 0 14px;
  color: #C7D6CE;
}

.page-news .news-rhythm__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  margin-top: 22px;
}

/* ---------- 引导 ---------- */
.page-news .news-bridge {
  padding-block: clamp(44px, 6vw, 76px);
}

.page-news .news-bridge__grid {
  display: grid;
  gap: var(--gap-s);
}

.page-news .news-bridge__card {
  padding: 24px 20px;
  border-radius: var(--r-m);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 10px;
}

.page-news .news-bridge__cardtitle {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 19px;
  line-height: 1.42;
  margin: 0;
  color: var(--paper);
}

.page-news .news-bridge__carddesc {
  margin: 0 0 6px;
  font-size: 14.5px;
  line-height: 1.78;
  color: #C7D6CE;
}

.page-news .news-bridge__card .btn {
  margin-top: auto;
}

.page-news .news-bridge__foot {
  margin: clamp(22px, 4vw, 34px) 0 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--mist);
}

.page-news .news-bridge__foot a {
  color: var(--cyan-400);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 240, 196, .4);
}

.page-news .news-bridge__foot a:hover {
  color: var(--cyan-200);
}

/* ---------- 图片通用 ---------- */
.page-news img {
  display: block;
  max-width: 100%;
  height: auto;
}

.page-news .media {
  position: relative;
  overflow: hidden;
  border-radius: var(--r-m);
  background: var(--green-900);
}

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

.page-news .media--wide img {
  aspect-ratio: 16 / 9;
}

.page-news .media--tall img {
  aspect-ratio: 4 / 3;
}

/* ---------- 平板 ---------- */
@media (min-width: 700px) {
  .page-news .news-series__track {
    grid-auto-flow: row;
    grid-template-columns: repeat(6, 1fr);
    overflow: visible;
    padding-bottom: 0;
  }

  .page-news .news-series__item:nth-child(1) { grid-column: span 3; }
  .page-news .news-series__item:nth-child(2) { grid-column: span 3; }
  .page-news .news-series__item:nth-child(3) { grid-column: span 2; }
  .page-news .news-series__item:nth-child(4) { grid-column: span 2; }
  .page-news .news-series__item:nth-child(5) { grid-column: span 2; }

  .page-news .news-item--lead,
  .page-news .news-item--split {
    display: grid;
    gap: var(--gap-m);
    align-items: center;
    grid-template-columns: 1fr 1fr;
    padding: 26px;
  }

  .page-news .news-item--lead .news-item__media,
  .page-news .news-item--split .news-item__media {
    margin-bottom: 0;
    align-self: stretch;
  }

  .page-news .news-item--lead .news-item__media img,
  .page-news .news-item--split .news-item__media img {
    height: 100%;
    aspect-ratio: 4 / 3;
  }

  .page-news .news-item--reverse .news-item__media {
    order: 2;
  }

  .page-news .news-versions__grid {
    grid-template-columns: 0.9fr 1.1fr;
    align-items: start;
    gap: var(--gap-l);
  }

  .page-news .news-versions__media {
    position: sticky;
    top: 96px;
  }

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

/* ---------- 桌面 ---------- */
@media (min-width: 1000px) {
  .page-news .news-hero__grid {
    grid-template-columns: 1.4fr 0.6fr;
    gap: var(--gap-l);
  }

  .page-news .news-feed__grid {
    grid-template-columns: var(--news-rail-w) minmax(0, 1fr);
    gap: var(--gap-l);
  }

  .page-news .news-feed__rail {
    position: sticky;
    top: 92px;
    align-self: start;
  }

  .page-news .news-feed__rail .tabs__list {
    flex-direction: column;
    gap: 2px;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-news .news-feed__rail .tab {
    border: 0;
    border-left: 2px solid var(--green-500);
    border-radius: 0;
    padding: 11px 12px 11px 16px;
    text-align: left;
    background: transparent;
    color: var(--mist);
  }

  .page-news .news-feed__rail .tab:hover {
    color: var(--paper);
    border-left-color: var(--cyan-200);
  }

  .page-news .news-feed__rail .tab[aria-selected="true"] {
    background: rgba(47, 240, 196, .08);
    color: var(--cyan-400);
    border-left-color: var(--cyan-400);
  }

  .page-news .news-rhythm__grid {
    grid-template-columns: 0.7fr 1.3fr;
    gap: var(--gap-l);
    align-items: start;
  }

  .page-news .news-item--lead {
    grid-template-columns: 1.15fr 0.85fr;
  }
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-news .news-series__item,
  .page-news .news-item,
  .page-news .news-item__title,
  .page-news .news-track__node::before {
    transition: none;
  }

  .page-news .news-series__item:hover {
    transform: none;
  }
}