.page-news {
  --pn-rail: 216px;
  --pn-gap: 54px;
  display: block;
  background: var(--ink);
}

.page-news__top {
  padding-top: 22px;
}

/* ---------- 首屏 ---------- */
.page-news__hero {
  padding-top: 30px;
  padding-bottom: 44px;
}

.page-news__hero-copy {
  max-width: 78ch;
}

.page-news__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(32px, 6.4vw, 64px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--white);
  margin: 16px 0 0;
}

.page-news__lede {
  margin-top: 20px;
  color: var(--mist);
  font-size: 16px;
  line-height: 1.8;
}

.page-news__band {
  margin-top: 22px;
}

.page-news__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  margin-top: 30px;
}

.page-news__stat {
  background: var(--ink);
  padding: 16px 16px 18px;
}

.page-news__stat-num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(26px, 5vw, 34px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
  color: var(--white);
}

.page-news__stat-num--cyan {
  color: var(--cyan);
}

.page-news__stat-num--orange {
  color: var(--orange);
}

.page-news__stat-num--ice {
  color: var(--ice);
}

.page-news__stat--cyan .page-news__stat-num {
  color: var(--cyan);
}

.page-news__stat--orange .page-news__stat-num {
  color: var(--orange);
}

.page-news__stat--ice .page-news__stat-num {
  color: var(--ice);
}

.page-news__stat-label {
  display: block;
  margin-top: 8px;
  font-size: 13px;
  line-height: 1.5;
  color: var(--mist);
}

.page-news__hero-figure {
  margin: 42px 0 0;
}

.page-news__hero-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: 3px 16px 3px 16px;
}

/* ---------- 主体两栏 ---------- */
.page-news__body {
  display: grid;
  gap: 26px;
  padding-top: 18px;
  padding-bottom: 72px;
}

.page-news__rail {
  align-self: start;
}

.page-news__rail-title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--ice);
}

.page-news__rail-list {
  list-style: none;
  margin: 0;
  padding: 0 0 6px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-news__rail-list::-webkit-scrollbar {
  display: none;
}

.page-news__rail-link {
  display: block;
  white-space: nowrap;
  padding: 7px 14px;
  font-size: 13px;
  color: var(--mist);
  text-decoration: none;
  border: 1px solid var(--line);
  border-radius: 999px;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.page-news__rail-link:hover,
.page-news__rail-link:focus-visible {
  color: var(--white);
  border-color: var(--cyan);
  background: rgba(22, 224, 208, 0.08);
}

.page-news__stream {
  min-width: 0;
}

.page-news__intro {
  margin: 20px 0 0;
  color: var(--mist);
  font-size: 15px;
  line-height: 1.85;
  max-width: 72ch;
}

/* ---------- 本轮焦点 ---------- */
.page-news__focus {
  position: relative;
  isolation: isolate;
  padding: 34px 22px 32px;
}

.page-news__focus::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(150deg, rgba(22, 224, 208, 0.16) 0%, rgba(10, 46, 51, 0.92) 52%, rgba(14, 26, 51, 0.96) 100%);
  border-radius: 3px 16px 3px 16px;
  transform: skewY(-1.4deg);
  box-shadow: inset 0 0 0 1px rgba(22, 224, 208, 0.2);
}

.page-news__focus-lead {
  margin: 22px 0 0;
  color: var(--white);
  font-size: 16px;
  line-height: 1.85;
  max-width: 68ch;
}

.page-news__focus-nums {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(132px, 1fr));
  gap: 1px;
  margin-top: 26px;
  background: rgba(159, 216, 255, 0.18);
  border-top: 1px solid rgba(159, 216, 255, 0.18);
  border-bottom: 1px solid rgba(159, 216, 255, 0.18);
}

.page-news__focus-num {
  background: rgba(7, 14, 31, 0.55);
  padding: 16px 16px 18px;
}

/* ---------- 刷新日志 ---------- */
.page-news__feed {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-news__feed-item {
  position: relative;
  border-bottom: 1px solid var(--line);
}

.page-news__feed-item::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: 2px;
  background: var(--cyan);
  transform: scaleY(0);
  transform-origin: bottom;
  transition: transform 0.28s var(--ease);
}

.page-news__feed-item:hover::after,
.page-news__feed-item:focus-within::after {
  transform: scaleY(1);
}

.page-news__disclosure {
  border: 0;
}

.page-news__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  grid-template-areas:
    "tag time"
    "title title";
  gap: 10px 12px;
  align-items: center;
  padding: 18px 34px 18px 0;
  cursor: pointer;
  list-style: none;
  position: relative;
}

.page-news__row::-webkit-details-marker {
  display: none;
}

.page-news__row::after {
  content: "+";
  position: absolute;
  right: 2px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--cyan);
}

.page-news__disclosure[open] .page-news__row::after {
  content: "–";
}

.page-news__row .tag {
  grid-area: tag;
  justify-self: start;
}

.page-news__row-time {
  grid-area: time;
  justify-self: end;
  font-size: 12px;
  color: var(--mist);
  white-space: nowrap;
}

.page-news__row-title {
  grid-area: title;
  display: block;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--white);
}

.page-news__feed-item--lead .page-news__row-title {
  font-family: var(--font-display);
  font-size: clamp(20px, 3.6vw, 28px);
  line-height: 1.3;
}

.page-news__disclosure[open] .page-news__row {
  padding-bottom: 6px;
}

.page-news__row-body {
  padding: 0 0 22px;
  max-width: 70ch;
}

.page-news__row-body p {
  margin: 0;
  color: var(--mist);
  font-size: 15px;
  line-height: 1.85;
}

/* ---------- 版本迭代 ---------- */
.page-news__versions-grid {
  margin-top: 28px;
}

.page-news__versions-figure {
  margin: 0 0 30px;
}

.page-news__versions-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: 3px 16px 3px 16px;
}

.page-news__timeline {
  list-style: none;
  margin: 0;
  padding: 0 0 0 24px;
  border-left: 1px solid var(--line);
}

.page-news__tl-item {
  position: relative;
  padding-bottom: 28px;
}

.page-news__tl-item:last-child {
  padding-bottom: 0;
}

.page-news__tl-item::before {
  content: "";
  position: absolute;
  left: -28.5px;
  top: 7px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--ice);
  box-shadow: 0 0 0 4px rgba(159, 216, 255, 0.14);
}

.page-news__tl-year {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--ice);
}

.page-news__tl-title {
  font-family: var(--font-display);
  font-size: 20px;
  line-height: 1.35;
  color: var(--white);
  margin: 6px 0 8px;
}

.page-news__tl-text {
  margin: 0;
  color: var(--mist);
  font-size: 15px;
  line-height: 1.8;
  max-width: 60ch;
}

/* ---------- 交锋专题 ---------- */
.page-news__series-figure {
  margin: 28px 0 0;
}

.page-news__series-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: 3px 16px 3px 16px;
}

.page-news__series-list {
  list-style: none;
  margin: 30px 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-news__series-row {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  grid-template-areas:
    "tag span"
    "title title"
    "text text";
  gap: 8px 14px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}

.page-news__series-row::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: 2px;
  background: var(--ice);
  transform: scaleY(0);
  transform-origin: bottom;
  transition: transform 0.28s var(--ease);
}

.page-news__series-row:hover::after,
.page-news__series-row:focus-within::after {
  transform: scaleY(1);
}

.page-news__series-row .tag {
  grid-area: tag;
  justify-self: start;
}

.page-news__series-span {
  grid-area: span;
  justify-self: end;
  font-size: 12px;
  color: var(--ice);
  white-space: nowrap;
}

.page-news__series-title {
  grid-area: title;
  margin: 4px 0 0;
  font-family: var(--font-display);
  font-size: 20px;
  line-height: 1.35;
  color: var(--white);
}

.page-news__series-text {
  grid-area: text;
  margin: 0;
  color: var(--mist);
  font-size: 15px;
  line-height: 1.8;
  max-width: 66ch;
}

.page-news__series-more {
  margin: 22px 0 0;
  font-size: 14px;
  color: var(--mist);
}

.page-news__series-more a {
  color: var(--ice);
  text-decoration: none;
  border-bottom: 1px solid rgba(159, 216, 255, 0.4);
}

.page-news__series-more a:hover,
.page-news__series-more a:focus-visible {
  color: var(--white);
  border-bottom-color: var(--white);
}

/* ---------- 本地观察 ---------- */
.page-news__local-grid {
  margin-top: 26px;
}

.page-news__obs-list {
  list-style: none;
  margin: 0 0 30px;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-news__obs-item {
  display: grid;
  grid-template-columns: 68px minmax(0, 1fr);
  gap: 14px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.page-news__obs-kicker {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--amber);
  padding-top: 3px;
}

.page-news__obs-item p {
  margin: 0;
  color: var(--mist);
  font-size: 15px;
  line-height: 1.8;
}

.page-news__local-figure {
  margin: 0;
}

.page-news__local-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: 3px 16px 3px 16px;
}

/* ---------- 订阅与投稿 ---------- */
.page-news__sub-grid {
  display: grid;
  gap: 1px;
  margin-top: 26px;
  background: var(--line);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-news__sub-col {
  background: var(--ink);
  padding: 22px 20px 24px;
}

.page-news__sub-title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: 19px;
  line-height: 1.4;
  color: var(--white);
}

.page-news__sub-col p {
  margin: 0;
  color: var(--mist);
  font-size: 15px;
  line-height: 1.8;
}

.page-news__sub-details {
  margin-top: 24px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-news__sub-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-news__sub-note {
  margin: 20px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
}

.page-news__sub-note a {
  color: var(--ice);
  text-decoration: none;
  border-bottom: 1px solid rgba(159, 216, 255, 0.4);
}

.page-news__sub-note a:hover,
.page-news__sub-note a:focus-visible {
  color: var(--white);
  border-bottom-color: var(--white);
}

/* ---------- 中屏与桌面 ---------- */
@media (min-width: 700px) {
  .page-news__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-news__stat {
    padding: 20px 20px 22px;
  }

  .page-news__row {
    grid-template-columns: auto minmax(0, 1fr) auto;
    grid-template-areas: "tag title time";
    gap: 18px;
    padding: 22px 38px 22px 0;
  }

  .page-news__row-time {
    font-size: 13px;
  }

  .page-news__obs-item {
    grid-template-columns: 84px minmax(0, 1fr);
    padding: 20px 0;
  }

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

@media (min-width: 900px) {
  .page-news__body {
    grid-template-columns: var(--pn-rail) minmax(0, 1fr);
    gap: var(--pn-gap);
    padding-top: 26px;
  }

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

  .page-news__rail-list {
    flex-direction: column;
    gap: 2px;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-news__rail-link {
    white-space: normal;
    padding: 9px 0 9px 14px;
    border: 0;
    border-left: 2px solid var(--line);
    border-radius: 0;
    font-size: 14px;
  }

  .page-news__rail-link:hover,
  .page-news__rail-link:focus-visible {
    background: transparent;
    border-left-color: var(--cyan);
  }

  .page-news__versions-grid {
    display: grid;
    grid-template-columns: minmax(0, 0.88fr) minmax(0, 1.12fr);
    gap: 44px;
    align-items: start;
  }

  .page-news__versions-figure {
    position: sticky;
    top: 96px;
    margin: 0;
  }

  .page-news__local-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    gap: 42px;
    align-items: start;
  }

  .page-news__obs-list {
    margin-bottom: 0;
  }
}

@media (min-width: 1180px) {
  .page-news__focus {
    padding: 42px 40px 40px;
  }

  .page-news__sub-col {
    padding: 26px 24px 28px;
  }
}