.page-news {
  --nl-sticky-top: calc(var(--bar-h) + var(--progress-h) + 10px);
  --nl-line: 2px solid var(--blue-400);
}

/* ---------- 首屏 ---------- */
.page-news .news-hero {
  padding-block: clamp(24px, 4vw, 44px) clamp(44px, 7vw, 88px);
  overflow: hidden;
}

.page-news .news-hero__grid {
  display: grid;
  gap: clamp(24px, 4vw, 40px);
  margin-top: clamp(20px, 3.5vw, 38px);
}

.page-news .news-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.1rem, 8.4vw, 4.2rem);
  line-height: 1.02;
  letter-spacing: -0.02em;
  margin: 14px 0 18px;
  color: var(--chalk-50);
  max-width: 20ch;
}

.page-news .news-hero__lede {
  font-size: 1.0625rem;
  line-height: 1.78;
  color: rgba(253, 253, 249, 0.82);
  max-width: 60ch;
  margin: 0;
}

.page-news .news-hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 3vw, 32px);
}

.page-news .news-hero__board {
  border: 3px solid var(--acid-400);
  background: var(--ink-800);
  padding: 20px 20px 18px;
  box-shadow: var(--shadow-acid);
}

.page-news .news-hero__boardcap {
  margin: 0;
  font-size: 0.8125rem;
  letter-spacing: 0.12em;
  color: var(--acid-400);
}

.page-news .news-hero__stats {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
}

.page-news .news-hero__stats li {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding: 11px 0;
  border-bottom: 1px dashed rgba(216, 245, 49, 0.3);
}

.page-news .news-hero__stats li:last-child {
  border-bottom: 0;
}

.page-news .news-hero__k {
  font-size: 0.875rem;
  color: rgba(253, 253, 249, 0.7);
}

.page-news .news-hero__v {
  font-size: 1rem;
  color: var(--acid-400);
  white-space: nowrap;
}

.page-news .news-hero__boardnote {
  margin: 14px 0 0;
  padding-top: 14px;
  border-top: 3px solid var(--ink-950);
  font-size: 0.875rem;
  line-height: 1.7;
  color: rgba(253, 253, 249, 0.68);
}

/* ---------- 区块标题 ---------- */
.page-news .sec-head {
  max-width: 76ch;
  margin-bottom: clamp(24px, 4vw, 44px);
}

.page-news .sec-head h2 {
  font-family: var(--font-display);
  font-size: clamp(1.55rem, 5vw, 2.5rem);
  line-height: 1.1;
  letter-spacing: -0.01em;
  margin: 10px 0 12px;
  color: var(--ink-900);
}

.page-news .section--ink .sec-head h2 {
  color: var(--chalk-50);
}

.page-news .sec-head__note {
  margin: 0;
  font-size: 1rem;
  line-height: 1.78;
  color: rgba(20, 24, 26, 0.76);
}

.page-news .section--ink .sec-head__note {
  color: rgba(253, 253, 249, 0.72);
}

/* ---------- 时间轴 ---------- */
.page-news .news-axis__fig {
  margin: 0 0 clamp(28px, 5vw, 52px);
}

.page-news .news-log {
  position: relative;
}

.page-news .news-log .vf {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.page-news .news-log .vf:focus-visible + .news-log__bar {
  outline: 3px solid var(--acid-400);
  outline-offset: 3px;
}

.page-news .news-log__bar {
  position: sticky;
  top: var(--nl-sticky-top);
  z-index: 6;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 16px;
  padding: 12px 0 14px;
  margin-bottom: clamp(20px, 3vw, 32px);
  background: var(--paper-50);
  border-bottom: 3px solid var(--ink-900);
}

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

.page-news .news-log__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-news .chip {
  display: inline-block;
  padding: 7px 15px;
  border: 2px solid var(--ink-900);
  background: transparent;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.06em;
  color: var(--ink-900);
  cursor: pointer;
  user-select: none;
  transition: background-color 160ms var(--ease), color 160ms var(--ease);
}

.page-news .chip:hover {
  background: var(--acid-200);
}

.page-news .news-log #vf-all:checked ~ .news-log__bar label[for="vf-all"],
.page-news .news-log #vf-version:checked ~ .news-log__bar label[for="vf-version"],
.page-news .news-log #vf-feature:checked ~ .news-log__bar label[for="vf-feature"],
.page-news .news-log #vf-content:checked ~ .news-log__bar label[for="vf-content"],
.page-news .news-log #vf-maintain:checked ~ .news-log__bar label[for="vf-maintain"] {
  background: var(--acid-400);
  color: var(--ink-900);
  border-color: var(--ink-950);
}

.page-news .news-log #vf-version:checked ~ .axis > .axis__item:not([data-cat="version"]),
.page-news .news-log #vf-feature:checked ~ .axis > .axis__item:not([data-cat="feature"]),
.page-news .news-log #vf-content:checked ~ .axis > .axis__item:not([data-cat="content"]),
.page-news .news-log #vf-maintain:checked ~ .axis > .axis__item:not([data-cat="maintain"]) {
  display: none;
}

.page-news .axis {
  list-style: none;
  margin: 0;
  padding: 0;
  border-left: var(--nl-line);
}

.page-news .axis__item {
  position: relative;
  padding: 0 0 18px;
}

.page-news .axis__item::before {
  content: "";
  position: absolute;
  left: -7px;
  top: 16px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--ember-500);
  box-shadow: 0 0 0 3px var(--paper-50);
}

.page-news .axis__item[data-cat="maintain"]::before {
  background: var(--blue-400);
}

.page-news .axis__item[data-cat="content"]::before {
  background: var(--ink-800);
}

.page-news .axis__link {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 6px 12px;
  align-items: baseline;
  margin-left: 26px;
  padding: 14px 16px;
  border: 2px solid var(--ink-900);
  background: var(--paper-50);
  box-shadow: var(--shadow-1);
  text-decoration: none;
  color: var(--ink-900);
  transition: transform 160ms var(--ease), box-shadow 160ms var(--ease), background-color 160ms var(--ease);
}

.page-news .axis__link:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-2);
  background: var(--acid-200);
}

.page-news .axis__link:focus-visible {
  outline: 3px solid var(--acid-400);
  outline-offset: 3px;
}

.page-news .axis__ver {
  font-size: 0.9375rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--ink-950);
}

.page-news .axis__what {
  grid-column: 1 / -1;
  order: 3;
  font-size: 1rem;
  line-height: 1.5;
}

.page-news .axis__when {
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: var(--blue-400);
}

.page-news .axis__link .tag {
  grid-column: 1 / -1;
  order: 4;
  justify-self: start;
}

/* ---------- 季度表格 ---------- */
.page-news .news-quarter__grid {
  display: grid;
  gap: clamp(24px, 4vw, 40px);
}

.page-news .news-quarter__scroll {
  overflow-x: auto;
  border: 3px solid var(--ink-900);
  background: var(--paper-50);
  box-shadow: var(--shadow-1);
  -webkit-overflow-scrolling: touch;
}

.page-news .qtable {
  width: 100%;
  min-width: 640px;
  border-collapse: collapse;
}

.page-news .qtable__cap {
  caption-side: top;
  text-align: left;
  padding: 12px 16px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--blue-400);
  background: var(--paper-50);
}

.page-news .qtable th {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-align: left;
  padding: 12px 16px;
  background: var(--ink-950);
  color: var(--acid-400);
  white-space: nowrap;
}

.page-news .qtable td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--paper-200);
  font-size: 0.9375rem;
  line-height: 1.6;
  vertical-align: top;
  color: var(--ink-900);
}

.page-news .qtable tbody tr:nth-child(even) {
  background: var(--paper-200);
}

.page-news .qtable tbody tr:last-child td {
  border-bottom: 0;
}

.page-news .qtable td.num {
  font-family: var(--font-mono);
  font-weight: 500;
  letter-spacing: 0.02em;
  white-space: nowrap;
  color: var(--ink-950);
}

.page-news .qtable .tag {
  white-space: nowrap;
}

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

/* ---------- 公告条目 ---------- */
.page-news .log-list {
  border-top: 3px solid var(--ink-900);
}

.page-news .log-item {
  border-bottom: 3px solid var(--ink-900);
  border-left: 3px solid var(--blue-400);
  background: var(--paper-50);
  transition: border-left-color 200ms var(--ease);
}

.page-news .log-item[open] {
  border-left-color: var(--acid-400);
}

.page-news .log-item__head {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 6px 12px;
  align-items: baseline;
  padding: 18px 18px 18px 18px;
  cursor: pointer;
  list-style: none;
}

.page-news .log-item__head::-webkit-details-marker {
  display: none;
}

.page-news .log-item__head::marker {
  content: "";
}

.page-news .log-item__head:focus-visible {
  outline: 3px solid var(--acid-400);
  outline-offset: -3px;
}

.page-news .log-item__idx {
  font-size: 0.8125rem;
  color: var(--blue-400);
}

.page-news .log-item__title {
  font-size: 1.0625rem;
  font-weight: 600;
  line-height: 1.5;
  color: var(--ink-950);
}

.page-news .log-item__tag {
  justify-self: start;
  grid-column: 2;
}

.page-news .log-item__when {
  grid-column: 2;
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: var(--blue-400);
}

.page-news .log-item__mark {
  grid-column: 3;
  grid-row: 1 / span 2;
  align-self: center;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border: 2px solid var(--ink-900);
  background: var(--acid-400);
  color: var(--ink-900);
}

.page-news .log-item__mark::before {
  content: "+";
  font-family: var(--font-mono);
  font-size: 1.1rem;
  line-height: 1;
}

.page-news .log-item[open] .log-item__mark::before {
  content: "−";
}

.page-news .log-item__body {
  padding: 0 18px 22px 18px;
  border-top: 1px dashed var(--paper-200);
  margin-top: 4px;
  padding-top: 16px;
}

.page-news .log-item__body p {
  margin: 0;
  font-size: 1rem;
  line-height: 1.78;
  color: rgba(20, 24, 26, 0.86);
  max-width: 68ch;
}

.page-news .log-item__facts {
  margin: 16px 0 0;
  display: grid;
  gap: 12px;
}

.page-news .log-item__facts dt {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  color: var(--blue-400);
}

.page-news .log-item__facts dd {
  margin: 3px 0 0;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--ink-900);
}

/* ---------- 专题观察 ---------- */
.page-news .news-feature__grid {
  display: grid;
  gap: clamp(26px, 4vw, 46px);
}

.page-news .spec {
  border-top: 3px solid var(--acid-400);
  padding-top: 18px;
}

.page-news .spec__cap {
  margin: 0 0 10px;
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  color: var(--acid-400);
}

.page-news .spec h3 {
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 3.4vw, 1.7rem);
  line-height: 1.2;
  margin: 0 0 14px;
  color: var(--chalk-50);
}

.page-news .spec__body {
  margin: 0 0 14px;
  font-size: 1rem;
  line-height: 1.82;
  color: rgba(253, 253, 249, 0.78);
  max-width: 68ch;
}

.page-news .spec__body:last-child {
  margin-bottom: 0;
}

.page-news .news-feature__side {
  display: grid;
  gap: clamp(24px, 4vw, 36px);
  align-content: start;
}

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

/* ---------- 订阅与提醒 ---------- */
.page-news .news-subscribe__grid {
  display: grid;
  gap: clamp(18px, 3vw, 28px);
}

.page-news .route-card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 12px;
  padding: 22px;
  border: 3px solid var(--ink-900);
  background: var(--paper-50);
  box-shadow: var(--shadow-1);
  transition: transform 160ms var(--ease), box-shadow 160ms var(--ease);
}

.page-news .route-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-2);
}

.page-news .route-card__num {
  margin: 0;
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  color: var(--ember-500);
}

.page-news .route-card h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  line-height: 1.25;
  margin: 0;
  color: var(--ink-950);
}

.page-news .route-card p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.78;
  color: rgba(20, 24, 26, 0.8);
}

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

.page-news .news-subscribe__foot {
  margin: clamp(24px, 4vw, 38px) 0 0;
  padding-top: 20px;
  border-top: 3px solid var(--ink-900);
  font-size: 0.9375rem;
  line-height: 1.78;
  color: rgba(20, 24, 26, 0.8);
  max-width: 76ch;
}

.page-news .news-subscribe__foot a {
  color: var(--ink-950);
  font-weight: 600;
  text-decoration: underline;
  text-decoration-color: var(--acid-400);
  text-decoration-thickness: 3px;
  text-underline-offset: 3px;
}

/* ---------- 历史归档 ---------- */
.page-news .news-archive__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: clamp(16px, 3vw, 22px);
}

.page-news .archive-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 20px;
  border: 3px solid var(--ink-900);
  background: var(--paper-50);
  box-shadow: var(--shadow-1);
}

.page-news .archive-card:nth-child(2) {
  transform: rotate(-0.6deg);
}

.page-news .archive-card__cap {
  margin: 0;
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  color: var(--blue-400);
}

.page-news .archive-card h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  line-height: 1.25;
  margin: 0;
  color: var(--ink-950);
}

.page-news .archive-card p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: rgba(20, 24, 26, 0.8);
}

.page-news .archive-card__link {
  margin-top: auto;
  align-self: flex-start;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.06em;
  color: var(--ink-950);
  text-decoration: none;
  border-bottom: 3px solid var(--acid-400);
  padding-bottom: 2px;
}

.page-news .archive-card__link:hover {
  background: var(--acid-200);
}

.page-news .archive-card__link:focus-visible {
  outline: 3px solid var(--acid-400);
  outline-offset: 3px;
}

.page-news .news-archive__fig {
  margin: clamp(28px, 5vw, 48px) 0 0;
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-news .news-hero__grid {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
    align-items: end;
  }

  .page-news .axis__link {
    grid-template-columns: 84px minmax(0, 1fr) auto auto;
    align-items: center;
    gap: 14px;
  }

  .page-news .axis__what {
    grid-column: 2;
    order: 0;
  }

  .page-news .axis__when {
    grid-column: 3;
    order: 0;
    text-align: right;
  }

  .page-news .axis__link .tag {
    grid-column: 4;
    order: 0;
    justify-self: end;
  }

  .page-news .log-item__head {
    grid-template-columns: 52px minmax(0, 1fr) auto auto 34px;
    align-items: center;
    gap: 14px;
    padding: 20px 20px 20px 22px;
  }

  .page-news .log-item__tag {
    grid-column: 3;
    justify-self: end;
  }

  .page-news .log-item__when {
    grid-column: 4;
    text-align: right;
  }

  .page-news .log-item__mark {
    grid-column: 5;
    grid-row: 1;
  }

  .page-news .log-item__body {
    padding: 18px 22px 24px 88px;
  }

  .page-news .log-item__facts {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px 28px;
  }

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

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

@media (min-width: 1020px) {
  .page-news .news-quarter__grid {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-news .news-feature__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
    gap: clamp(40px, 5vw, 72px);
  }

  .page-news .news-feature__side {
    margin-top: 44px;
  }

  .page-news .spec--offset {
    margin-left: 28px;
  }

  .page-news .news-quarter__fig {
    margin-top: 28px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .axis__link,
  .page-news .route-card,
  .page-news .log-item {
    transition: none;
  }

  .page-news .axis__link:hover,
  .page-news .route-card:hover {
    transform: none;
  }
}