.page-news {
  --pn-text: #C6D2E0;
  --pn-strong: #F3EDE1;
  --pn-muted: #A3B2C4;
  --pn-line: #29384E;
  --pn-line-soft: #1E2D40;
  --pn-panel: #14263A;
  --pn-deep: #0B1420;

  background: var(--ink);
  color: var(--pn-text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
}

.page-news h1,
.page-news h2,
.page-news h3 {
  margin: 0;
  font-family: var(--font-title);
  color: var(--pn-strong);
  line-height: 1.25;
  letter-spacing: 0.01em;
}

.page-news p {
  margin: 0;
}

.page-news a {
  color: var(--jade-light);
  text-decoration: none;
  text-underline-offset: 4px;
}

.page-news a:hover {
  text-decoration: underline;
}

.page-news a:focus-visible,
.page-news button:focus-visible,
.page-news label:focus-visible {
  outline: 2px solid var(--jade-light);
  outline-offset: 2px;
  border-radius: 2px;
}

.page-news .mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

/* ---------- 面包屑 ---------- */
.page-news .crumb {
  padding-top: 26px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.page-news .crumb__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-news .crumb__item + .crumb__item::before {
  content: "/";
  margin-right: 8px;
  color: var(--pn-line);
}

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

/* ---------- 区块抬头 ---------- */
.page-news .section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 18px;
  padding-bottom: 16px;
  margin-bottom: 34px;
  border-bottom: 2px solid var(--gold);
}

.page-news .section-head__num {
  flex: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--gold);
}

.page-news .section-head__title {
  flex: 1 1 auto;
  font-size: clamp(23px, 3.4vw, 36px);
  font-weight: 800;
}

.page-news .section-head__note {
  flex: 1 1 280px;
  text-align: right;
  font-size: 13.5px;
  color: var(--pn-muted);
}

/* ---------- 首屏 ---------- */
.page-news .lede {
  padding: 30px 0 62px;
  border-bottom: 2px solid var(--gold);
  background:
    radial-gradient(120% 90% at 88% 0%, rgba(138, 90, 43, 0.24) 0%, rgba(15, 27, 42, 0) 58%),
    var(--ink);
}

.page-news .lede__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 42px;
}

.page-news .lede__coord {
  margin-bottom: 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--gold);
}

.page-news h1 {
  font-size: clamp(34px, 6.2vw, 62px);
  font-weight: 800;
  letter-spacing: -0.012em;
}

.page-news .lede__intro {
  margin-top: 22px;
  max-width: 62ch;
  font-size: 16.5px;
  color: var(--pn-text);
}

/* 最近迭代速览 */
.page-news .glance {
  margin-top: 42px;
  border-top: 2px solid var(--pn-line);
}

.page-news .glance__title {
  padding: 16px 0 10px;
  font-size: 19px;
  font-weight: 700;
  color: var(--pn-strong);
}

.page-news .glance__list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-news .glance__row {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 14px;
  padding: 13px 0;
  border-top: 1px solid var(--pn-line);
}

.page-news .glance__ver {
  flex: none;
  width: 132px;
  font-family: var(--font-mono);
  font-size: 14.5px;
  letter-spacing: 0.02em;
  color: var(--gold);
  word-break: break-all;
}

.page-news .glance__text {
  flex: 1 1 240px;
  font-size: 14.5px;
  color: var(--pn-muted);
}

/* 侧栏 */
.page-news .lede__side {
  display: grid;
  align-content: start;
  gap: 22px;
  padding: 18px;
  background: var(--pn-panel);
  border: 2px solid var(--pn-line);
  box-shadow: var(--shadow-hard);
}

.page-news .lede__figure {
  margin: 0;
}

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

.page-news .media__caption {
  margin-top: 10px;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.page-news .chan-key {
  display: grid;
  gap: 0;
  margin: 0;
}

.page-news .chan-key__item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 10px 0;
  border-top: 1px solid var(--pn-line);
}

.page-news .chan-key dt {
  flex: none;
  display: flex;
  align-items: center;
  gap: 8px;
  width: 112px;
  font-size: 13.5px;
  font-weight: 700;
  color: var(--pn-strong);
}

.page-news .chan-key dd {
  margin: 0;
  font-size: 13px;
  line-height: 1.65;
  color: var(--pn-muted);
}

.page-news .chan-dot {
  flex: none;
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.page-news .chan-dot--stable { background: var(--gold); }
.page-news .chan-dot--lts { background: var(--jade); }
.page-news .chan-dot--preview { background: var(--gold-soft); }
.page-news .chan-dot--patch { background: var(--clay); }

/* ---------- 更新记录列表 ---------- */
.page-news .log {
  padding: 66px 0 78px;
  background: linear-gradient(180deg, var(--ink) 0%, var(--pn-deep) 100%);
}

.page-news .log__banner {
  height: 150px;
  overflow: hidden;
  border: 2px solid var(--pn-line);
}

.page-news .log__banner img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.7;
}

/* 筛选标签条 */
.page-news .filter-rig {
  margin-top: 30px;
}

.page-news .channel-switch {
  position: sticky;
  top: 52px;
  z-index: 6;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding: 12px 0;
  background: rgba(11, 20, 32, 0.94);
  border-bottom: 2px solid var(--gold);
}

.page-news .channel-switch__input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.page-news .channel-switch__label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  font-size: 14px;
  color: var(--pn-text);
  background: var(--ink-2);
  border: 2px solid var(--pn-line);
  cursor: pointer;
  transition: transform 120ms ease-out, border-color 120ms ease-out, background 120ms ease-out;
}

.page-news .channel-switch__label::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--muted);
}

.page-news .channel-switch__label[for="chan-stable"]::before { background: var(--gold); }
.page-news .channel-switch__label[for="chan-lts"]::before { background: var(--jade); }
.page-news .channel-switch__label[for="chan-preview"]::before { background: var(--gold-soft); }
.page-news .channel-switch__label[for="chan-patch"]::before { background: var(--clay); }

.page-news .channel-switch__label:hover {
  transform: translateY(-2px);
  border-color: var(--gold);
}

.page-news .channel-switch__input:checked + .channel-switch__label {
  background: var(--gold-soft);
  border-color: var(--gold);
  color: var(--ink);
  font-weight: 700;
}

.page-news .channel-switch__input:focus-visible + .channel-switch__label {
  outline: 2px solid var(--jade-light);
  outline-offset: 2px;
}

/* 通道过滤（渐进增强：不支持 :has 时全部显示） */
.page-news .filter-rig:has(#chan-stable:checked) .timeline .entry:not(.entry--stable),
.page-news .filter-rig:has(#chan-lts:checked) .timeline .entry:not(.entry--lts),
.page-news .filter-rig:has(#chan-preview:checked) .timeline .entry:not(.entry--preview),
.page-news .filter-rig:has(#chan-patch:checked) .timeline .entry:not(.entry--patch) {
  display: none;
}

/* 时间轴 */
.page-news .timeline {
  margin: 10px 0 0;
  padding: 0;
  list-style: none;
}

.page-news .entry {
  display: grid;
  grid-template-columns: 26px 1fr;
  column-gap: 18px;
  padding: 26px 0;
  border-bottom: 1px solid var(--pn-line-soft);
}

.page-news .entry__rail {
  position: relative;
  display: block;
}

.page-news .entry__rail::before {
  content: "";
  position: absolute;
  left: 50%;
  top: -26px;
  bottom: -26px;
  width: 2px;
  transform: translateX(-1px);
  background: var(--pn-line);
}

.page-news .entry:first-child .entry__rail::before { top: 0; }
.page-news .entry:last-child .entry__rail::before { bottom: 0; }

.page-news .entry__rail::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 8px;
  width: 12px;
  height: 12px;
  transform: translateX(-50%);
  border-radius: 50%;
  background: var(--muted);
  box-shadow: 0 0 0 3px var(--ink);
}

.page-news .entry--stable .entry__rail::after { background: var(--gold); }
.page-news .entry--lts .entry__rail::after { background: var(--jade); }
.page-news .entry--preview .entry__rail::after { background: var(--gold-soft); }
.page-news .entry--patch .entry__rail::after { background: var(--clay); }

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

.page-news .entry__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 14px;
}

.page-news .entry__ver {
  font-family: var(--font-mono);
  font-size: 17px;
  letter-spacing: 0.02em;
  color: var(--gold);
  word-break: break-all;
}

.page-news .entry__when {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--muted);
}

.page-news .entry__title {
  margin-top: 12px;
  font-size: 18.5px;
  font-weight: 700;
}

.page-news .entry__desc {
  margin-top: 8px;
  font-size: 15px;
  color: var(--pn-text);
}

.page-news .entry__facts {
  display: grid;
  gap: 8px;
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
}

.page-news .entry__facts li {
  position: relative;
  padding-left: 20px;
  font-size: 14px;
  color: var(--pn-muted);
}

.page-news .entry__facts li::before {
  content: "▚";
  position: absolute;
  left: 0;
  color: var(--gold-soft);
  font-size: 12px;
}

.page-news .entry__meta {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 7px 14px;
  margin-top: 16px;
  padding-top: 12px;
  border-top: 1px dashed var(--pn-line);
  font-size: 13.5px;
}

.page-news .entry__meta-k {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--gold);
  padding-top: 3px;
}

.page-news .entry__meta-v {
  color: var(--pn-muted);
}

/* ---------- 专题系列 ---------- */
.page-news .topics {
  padding: 70px 0;
  background: var(--ink);
}

.page-news .topics__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}

.page-news .topics__visual {
  border: 2px solid var(--pn-line);
  overflow: hidden;
}

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

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

.page-news .topic {
  display: grid;
  grid-template-columns: 42px 1fr;
  gap: 16px;
  padding: 24px 0;
  border-top: 2px solid var(--pn-line);
}

.page-news .topic__num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--gold);
  padding-top: 4px;
}

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

.page-news .topic__title {
  font-size: 21px;
  font-weight: 800;
}

.page-news .topic__desc {
  margin-top: 10px;
  font-size: 15px;
  color: var(--pn-text);
}

.page-news .topic__links {
  margin-top: 12px;
  font-size: 13px;
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
  color: var(--muted);
}

.page-news .topic__side {
  display: none;
}

/* ---------- 历史回溯 ---------- */
.page-news .trace {
  padding: 70px 0;
  background: var(--pn-panel);
  border-top: 2px solid var(--pn-line);
  border-bottom: 2px solid var(--pn-line);
}

.page-news .trace__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
}

.page-news .trace__item {
  padding: 22px;
  background: var(--ink);
  border: 2px solid var(--pn-line);
  transition: transform 120ms ease-out, border-color 120ms ease-out, box-shadow 120ms ease-out;
}

.page-news .trace__item:hover {
  transform: translateY(-2px);
  border-color: var(--gold);
  box-shadow: var(--shadow-hard);
}

.page-news .trace__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--gold);
}

.page-news .trace__title {
  margin-top: 12px;
  font-size: 19px;
  font-weight: 700;
}

.page-news .trace__text {
  margin-top: 10px;
  font-size: 14.5px;
  color: var(--pn-muted);
}

/* ---------- 订阅与提醒 ---------- */
.page-news .subscribe {
  padding: 70px 0;
  background: var(--ink);
}

.page-news .subscribe__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 34px;
}

.page-news .subscribe__visual {
  border: 2px solid var(--pn-line);
  overflow: hidden;
}

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

.page-news .drawer {
  border-top: 1px solid var(--pn-line);
}

.page-news .drawer__head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  width: 100%;
  padding: 18px 0;
  background: none;
  border: 0;
  text-align: left;
  font-family: var(--font-title);
  font-size: 16.5px;
  font-weight: 700;
  color: var(--pn-strong);
  cursor: pointer;
}

.page-news .drawer__head:hover {
  color: var(--gold);
}

.page-news .drawer__sign {
  flex: none;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1.2;
  color: var(--gold);
}

.page-news .drawer__sign::before {
  content: "+";
}

.page-news .drawer__head[aria-expanded="true"] .drawer__sign::before {
  content: "−";
}

.page-news .drawer__panel {
  padding: 0 0 20px;
  font-size: 14.5px;
  color: var(--pn-muted);
}

.page-news .drawer__panel p {
  max-width: 66ch;
}

/* ---------- 收束条 ---------- */
.page-news .next-step {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 20px;
  margin: 0 0 72px;
  padding: 26px 22px;
  border: 2px solid var(--gold);
  background: var(--ink-2);
}

.page-news .next-step__text {
  flex: 1 1 340px;
  font-size: 15px;
  color: var(--pn-text);
}

.page-news .next-step__acts {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 响应式 ---------- */
@media (max-width: 700px) {
  .page-news .section-head__note {
    flex-basis: 100%;
    text-align: left;
  }

  .page-news .glance__ver {
    width: 100%;
  }

  .page-news .chan-key__item {
    flex-direction: column;
    gap: 4px;
  }

  .page-news .chan-key dt {
    width: auto;
  }

  .page-news .entry__meta {
    grid-template-columns: 1fr;
    gap: 2px;
  }

  .page-news .entry__meta-k {
    padding-top: 10px;
  }

  .page-news .channel-switch {
    top: 48px;
  }
}

@media (min-width: 760px) {
  .page-news .log__banner {
    height: 210px;
  }

  .page-news .entry {
    grid-template-columns: 30px 1fr;
    column-gap: 26px;
    padding: 32px 0;
  }

  .page-news .entry__rail::before {
    top: -32px;
    bottom: -32px;
  }

  .page-news .entry__ver {
    font-size: 20px;
    min-width: 132px;
  }

  .page-news .entry__title {
    font-size: 20px;
  }

  .page-news .trace__grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }
}

@media (min-width: 1000px) {
  .page-news .lede__grid {
    grid-template-columns: 7fr 5fr;
    gap: 52px;
    align-items: start;
  }

  .page-news .lede {
    padding: 40px 0 76px;
  }

  .page-news .topics__grid {
    grid-template-columns: 5fr 7fr;
    gap: 44px;
    align-items: start;
  }

  .page-news .topics__visual {
    position: sticky;
    top: 92px;
  }

  .page-news .topic {
    grid-template-columns: 42px 1fr 26px;
  }

  .page-news .topic__side {
    display: block;
    grid-column: 3;
    writing-mode: vertical-rl;
    justify-self: end;
    align-self: start;
    padding-top: 4px;
    font-size: 12px;
    letter-spacing: 0.24em;
    color: var(--gold);
    opacity: 0.75;
  }

  .page-news .subscribe__grid {
    grid-template-columns: 6fr 6fr;
    gap: 46px;
    align-items: start;
  }

  .page-news .log {
    padding: 78px 0 92px;
  }
}

@media (min-width: 1240px) {
  .page-news .lede__grid {
    grid-template-columns: 8fr 4fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .channel-switch__label,
  .page-news .trace__item {
    transition: none;
  }

  .page-news .channel-switch__label:hover,
  .page-news .trace__item:hover {
    transform: none;
  }
}