.page-news {
  --news-body: #4A4D57;
  --news-hairline: var(--rule-soft);
  overflow-x: hidden;
}

/* ---------- 面包屑（深色首屏内） ---------- */
.page-news .crumbs {
  color: rgba(255, 255, 255, 0.66);
  font-size: 14px;
}
.page-news .crumbs a {
  color: var(--cyan);
  text-decoration: none;
}
.page-news .crumbs a:hover {
  text-decoration: underline;
}

/* ---------- 首屏 ---------- */
.page-news .news-hero {
  position: relative;
  background: var(--pitch);
  color: #FFFFFF;
  padding: 30px 0 48px;
}
.page-news .news-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  background: var(--amber);
}
.page-news .news-hero__inner {
  display: grid;
  gap: 30px;
  margin-top: 26px;
}
.page-news .news-hero__kicker {
  margin: 0 0 14px;
  font-size: 13px;
  letter-spacing: 0.18em;
  color: var(--cyan);
  text-transform: uppercase;
}
.page-news .news-hero__title {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 34px;
  line-height: 1.1;
  letter-spacing: -0.02em;
}
.page-news .news-hero__lead {
  margin: 0;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.85;
  color: rgba(255, 255, 255, 0.86);
}
.page-news .news-hero__aside {
  border-top: 1px solid rgba(0, 229, 160, 0.42);
  padding-top: 20px;
}
.page-news .news-hero__aside-label {
  margin: 0 0 8px;
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--amber);
  font-weight: 700;
}
.page-news .news-hero__aside-value {
  margin: 0;
  font-size: 52px;
  line-height: 1;
  font-weight: 700;
  color: var(--cyan);
}
.page-news .news-hero__aside-note {
  margin: 12px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.72);
}

@media (min-width: 880px) {
  .page-news .news-hero {
    padding: 38px 0 58px;
  }
  .page-news .news-hero__inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: 58px;
    align-items: end;
    margin-top: 34px;
  }
  .page-news .news-hero__title {
    font-size: 44px;
  }
  .page-news .news-hero__lead {
    font-size: 17px;
  }
  .page-news .news-hero__aside {
    border-top: 0;
    border-left: 1px solid rgba(0, 229, 160, 0.42);
    padding-top: 0;
    padding-left: 28px;
  }
}

/* ---------- 章节编号 ---------- */
.page-news .sec-num {
  color: var(--muted);
  transition: color var(--dur) var(--ease);
}
.page-news .sec-num[data-lit] {
  color: var(--cyan);
}
.page-news .section--paper .sec-num[data-lit],
.page-news .section--stack .sec-num[data-lit] {
  color: var(--pitch);
}

/* ---------- 01 本期更新摘要 ---------- */
.page-news .summary-panel {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  margin-top: 26px;
  overflow: hidden;
}
.page-news .summary-panel__list {
  padding: 26px 22px;
}
.page-news .summary-points {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: sp;
}
.page-news .summary-points li {
  position: relative;
  padding-left: 34px;
  padding-bottom: 15px;
  margin-bottom: 15px;
  border-bottom: 1px dashed var(--news-hairline);
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--ink);
}
.page-news .summary-points li:last-child {
  padding-bottom: 0;
  margin-bottom: 0;
  border-bottom: 0;
}
.page-news .summary-points li::before {
  counter-increment: sp;
  content: counter(sp, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 3px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--pitch);
}
.page-news .summary-panel__media {
  margin: 0;
  background: var(--night);
}
.page-news .summary-panel__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 12 / 7;
  object-fit: cover;
}

@media (min-width: 900px) {
  .page-news .summary-panel {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    align-items: stretch;
  }
  .page-news .summary-panel__list {
    padding: 34px 38px;
  }
  .page-news .summary-panel__media img {
    height: 100%;
    aspect-ratio: auto;
  }
}

/* ---------- 02 动态条目列表 ---------- */
.page-news .news-stream {
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
  border-top: 2px solid var(--pitch);
}
.page-news .news-item {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 4px 16px;
  padding: 22px 0;
  border-bottom: 1px solid var(--news-hairline);
}
.page-news .news-item__no {
  grid-row: 1;
  grid-column: 1;
  padding-top: 3px;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.03em;
  color: var(--pitch);
}
.page-news .news-item__body {
  grid-column: 2;
  min-width: 0;
}
.page-news .news-item__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 9px;
}
.page-news .news-item__title {
  margin: 0 0 7px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 18px;
  line-height: 1.5;
  letter-spacing: -0.01em;
  color: var(--ink);
}
.page-news .news-item__text {
  margin: 0;
  max-width: 70ch;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--news-body);
}
.page-news .news-item__time {
  grid-column: 2;
  margin: 10px 0 0;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--muted);
}

@media (min-width: 760px) {
  .page-news .news-item {
    grid-template-columns: 62px minmax(0, 1fr) 130px;
    gap: 0 26px;
    padding: 28px 0;
  }
  .page-news .news-item__no {
    grid-column: 1;
    grid-row: 1;
    font-size: 16px;
  }
  .page-news .news-item__body {
    grid-column: 2;
    grid-row: 1;
  }
  .page-news .news-item__title {
    font-size: 20px;
  }
  .page-news .news-item__time {
    grid-column: 3;
    grid-row: 1;
    margin: 0;
    padding-top: 4px;
    text-align: right;
  }
}

/* ---------- 03 版本发布记录 ---------- */
.page-news .version-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 34px;
  margin-top: 26px;
}
.page-news .version-list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid rgba(0, 229, 160, 0.35);
}
.page-news .version-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  padding: 22px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.13);
}
.page-news .version-row__no {
  margin: 0;
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--amber);
}
.page-news .version-row__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 18px;
  line-height: 1.5;
  color: #FFFFFF;
}
.page-news .version-row__changes {
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-news .version-row__changes li {
  position: relative;
  padding-left: 18px;
  margin-bottom: 6px;
  font-size: 15px;
  line-height: 1.75;
  color: rgba(255, 255, 255, 0.74);
}
.page-news .version-row__changes li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 8px;
  height: 1px;
  background: var(--cyan);
}
.page-news .version-row__time {
  margin: 0;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: rgba(255, 255, 255, 0.5);
}
.page-news .version-figure {
  margin: 0;
}
.page-news .version-figure img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid rgba(255, 255, 255, 0.16);
}
.page-news .version-figure figcaption {
  margin-top: 12px;
  font-size: 13.5px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.56);
}

@media (min-width: 640px) {
  .page-news .version-row {
    grid-template-columns: 92px minmax(0, 1fr);
    gap: 0 26px;
  }
  .page-news .version-row__no {
    padding-top: 2px;
  }
  .page-news .version-row__time {
    grid-column: 2;
    margin-top: 12px;
  }
}

@media (min-width: 940px) {
  .page-news .version-layout {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    gap: 54px;
    align-items: start;
  }
  .page-news .version-row {
    grid-template-columns: 92px minmax(0, 1fr) 128px;
    gap: 0 24px;
  }
  .page-news .version-row__time {
    grid-column: 3;
    margin-top: 2px;
    text-align: right;
  }
}

/* ---------- 04 专题系列 ---------- */
.page-news .series-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
  margin-top: 26px;
}
.page-news .series-card {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  overflow: hidden;
}
.page-news .series-card__cover {
  margin: 0;
  background: var(--night);
}
.page-news .series-card__cover img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}
.page-news .series-card__body {
  padding: 22px 22px 24px;
}
.page-news .series-card__kicker {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--muted);
}
.page-news .series-card__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 22px;
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--ink);
}
.page-news .series-card__text {
  margin: 0 0 18px;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--news-body);
}
.page-news .series-card__count {
  margin: 0;
  padding-top: 14px;
  border-top: 1px solid var(--news-hairline);
  font-size: 14px;
  color: var(--muted);
}
.page-news .series-card__count b {
  font-size: 21px;
  font-weight: 700;
  color: var(--wine);
}

@media (min-width: 800px) {
  .page-news .series-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 32px;
  }
  .page-news .series-card__body {
    padding: 26px 28px 28px;
  }
}

/* ---------- 05 归档与检索 ---------- */
.page-news .archive-axis {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  margin: 26px 0 0;
  padding: 0 0 0 22px;
  list-style: none;
  border-left: 2px solid var(--wine);
}
.page-news .archive-axis__item {
  position: relative;
  padding: 16px 0 20px;
}
.page-news .archive-axis__item::before {
  content: "";
  position: absolute;
  left: -28px;
  top: 24px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--amber);
  box-shadow: 0 0 0 3px var(--stack);
}
.page-news .archive-axis__tick {
  display: block;
  margin-bottom: 8px;
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--wine);
  font-weight: 700;
}
.page-news .archive-axis__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 19px;
  line-height: 1.4;
  color: var(--ink);
}
.page-news .archive-axis__text {
  margin: 0;
  max-width: 62ch;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--news-body);
}
.page-news .archive-figure {
  margin: 34px 0 0;
}
.page-news .archive-figure img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--rule);
}
.page-news .archive-figure figcaption {
  margin-top: 12px;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--muted);
}

@media (min-width: 760px) {
  .page-news .archive-axis {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    padding: 26px 0 0;
    border-left: 0;
    border-top: 2px solid var(--wine);
  }
  .page-news .archive-axis__item {
    padding: 6px 30px 0 0;
  }
  .page-news .archive-axis__item::before {
    left: 0;
    top: -31px;
    box-shadow: 0 0 0 3px var(--stack);
  }
}

/* ---------- 06 署名与校对 ---------- */
.page-news .byline-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  margin-top: 26px;
}
.page-news .byline-card {
  border-top: 3px solid var(--pitch);
  padding-top: 18px;
}
.page-news .byline-card:nth-child(2) {
  border-top-color: var(--wine);
}
.page-news .byline-card:nth-child(3) {
  border-top-color: var(--amber);
}
.page-news .byline-card__role {
  margin: 0 0 10px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--pitch);
}
.page-news .byline-card__text {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--news-body);
}

@media (min-width: 760px) {
  .page-news .byline-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 32px;
  }
}

/* ---------- 动效偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-news .sec-num {
    transition: none;
  }
}