.page-news {
  --news-gap: clamp(56px, 7.5vw, 104px);
  background-color: var(--sea);
  background-image:
    linear-gradient(to right, rgba(53, 224, 208, 0.04) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(53, 224, 208, 0.04) 1px, transparent 1px);
  background-size: 108px 108px;
  color: var(--cream);
  padding-bottom: clamp(48px, 7vw, 96px);
  overflow-x: hidden;
}

.page-news .section {
  padding-block: var(--news-gap);
}

.page-news .eyebrow {
  color: var(--signal);
}

.page-news .section__head h2 {
  font-family: var(--font-narrow);
  font-weight: 700;
  font-size: clamp(26px, 3.4vw, 38px);
  line-height: 1.18;
  letter-spacing: -0.01em;
  color: var(--cream);
  margin: 10px 0 12px;
}

.page-news .section__head p:last-child {
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--cream-64);
  margin: 0;
  max-width: 640px;
}

/* 面包屑 */
.page-news .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding-top: clamp(20px, 3vw, 32px);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--cream-64);
}

.page-news .breadcrumb a {
  color: var(--cream-80);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 160ms var(--ease), border-color 160ms var(--ease);
}

.page-news .breadcrumb a:hover,
.page-news .breadcrumb a:focus-visible {
  color: var(--signal);
  border-bottom-color: var(--signal);
}

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

/* 首屏 */
.page-news .news-hero {
  padding-top: clamp(24px, 4vw, 56px);
}

.page-news .news-hero__inner {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
}

.page-news .news-hero__lead .display {
  font-size: clamp(52px, 10vw, 106px);
  font-weight: 200;
  line-height: 0.94;
  letter-spacing: -0.03em;
  color: var(--cream);
  margin: 10px 0 0;
}

.page-news .news-hero__aside .lede {
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.85;
  color: var(--cream-80);
  margin: 0 0 22px;
}

.page-news .news-hero__keys {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 30px;
  list-style: none;
  margin: 0;
  padding: 18px 0 0;
  border-top: 1px solid var(--line-dark);
}

.page-news .news-hero__keys li {
  display: flex;
  align-items: baseline;
  gap: 8px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--cream-64);
}

.page-news .news-hero__keys .mono {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0;
  color: var(--signal);
}

/* 通用图片框 */
.page-news .news-figure {
  margin: 0;
  position: relative;
  background: var(--sea-layer);
  border: 1px solid var(--line-dark);
  box-shadow: inset 0 0 0 1px rgba(53, 224, 208, 0.14);
  overflow: hidden;
}

.page-news .news-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  filter: saturate(0.55) contrast(1.04);
}

.page-news .news-figure figcaption {
  padding: 10px 14px;
  font-size: 11px;
  letter-spacing: 0.09em;
  color: var(--cream-64);
  border-top: 1px solid var(--line-dark-soft);
}

/* 主题标签 */
.page-news .tag {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 11px;
  letter-spacing: 0.14em;
  line-height: 1;
  color: var(--cream-64);
  white-space: nowrap;
}

.page-news .tag__dot {
  display: block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  flex: none;
}

.page-news .tag--version .tag__dot {
  background: var(--signal);
}

.page-news .tag--season .tag__dot {
  background: var(--moss);
}

.page-news .tag--method .tag__dot {
  background: var(--terracotta);
}

.page-news .tag--notice .tag__dot {
  background: var(--coral);
}

/* 置顶 */
.page-news .pinned-stack {
  display: grid;
  gap: 16px;
  margin-top: clamp(28px, 4vw, 44px);
}

.page-news .pinned-card {
  position: relative;
  background: var(--glass);
  border: 1px solid var(--line-dark);
  padding: clamp(20px, 3vw, 30px);
  transition: border-color 160ms var(--ease), background-color 160ms var(--ease);
}

.page-news .pinned-card:hover,
.page-news .pinned-card:focus-within {
  border-color: var(--signal);
  background: rgba(53, 224, 208, 0.06);
}

.page-news .pinned-card--feature {
  display: grid;
  padding: 0;
  overflow: hidden;
}

.page-news .pinned-card--feature .pinned-card__body {
  padding: clamp(22px, 3vw, 34px);
}

.page-news .pinned-card__media {
  border: 0;
  box-shadow: none;
  min-height: 200px;
  order: -1;
}

.page-news .pinned-card__media img {
  height: 100%;
  max-height: 260px;
}

.page-news .pinned-card__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 16px;
  margin: 0 0 12px;
}

.page-news .pinned-card__when {
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--cream-64);
}

.page-news .pinned-card__title {
  font-family: var(--font-narrow);
  font-size: clamp(20px, 2.4vw, 26px);
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.005em;
  color: var(--cream);
  margin: 0 0 10px;
}

.page-news .pinned-card__text {
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--cream-80);
  margin: 0;
}

/* 主题列表 */
.page-news .topics-layout {
  display: grid;
  gap: clamp(28px, 4vw, 48px);
  margin-top: clamp(28px, 4vw, 44px);
}

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

.page-news .topic-row {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 14px;
  align-items: start;
  padding: 18px 0;
  border-top: 1px solid var(--line-dark-soft);
  transition: border-color 160ms var(--ease);
}

.page-news .topic-row:first-child {
  border-top-color: var(--line-dark);
}

.page-news .topic-row:hover {
  border-top-color: var(--signal);
}

.page-news .topic-row__dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  margin-top: 8px;
  flex: none;
}

.page-news .topic-row__dot--version {
  background: var(--signal);
}

.page-news .topic-row__dot--season {
  background: var(--moss);
}

.page-news .topic-row__dot--method {
  background: var(--terracotta);
}

.page-news .topic-row__dot--notice {
  background: var(--coral);
}

.page-news .topic-row__body h3 {
  font-size: 17px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--cream);
  margin: 0 0 6px;
}

.page-news .topic-row__body p {
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--cream-64);
  margin: 0;
}

.page-news .topic-row__count {
  font-size: 16px;
  font-weight: 700;
  color: var(--cream-80);
  letter-spacing: 0.04em;
  align-self: center;
}

.page-news .topics-figure {
  align-self: start;
}

/* 时间线 */
.page-news .timeline-banner {
  margin-top: clamp(28px, 4vw, 44px);
}

.page-news .timeline-banner img {
  max-height: 240px;
}

.page-news .timeline {
  position: relative;
  margin-top: clamp(24px, 3.5vw, 40px);
}

.page-news .timeline__rail {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 4px;
  width: 2px;
  background: linear-gradient(to bottom, var(--terracotta), rgba(196, 116, 79, 0.22));
}

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

.page-news .timeline__item {
  position: relative;
  padding-left: 34px;
  margin-bottom: 14px;
}

.page-news .timeline__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 20px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--moss);
  box-shadow: 0 0 0 4px var(--sea);
  transition: background-color 160ms var(--ease);
}

.page-news .timeline__item:hover::before {
  background: var(--signal);
}

.page-news .timeline__item:nth-child(4n) {
  margin-bottom: 56px;
}

/* 条目 */
.page-news .entry {
  background: var(--cream);
  color: var(--ink);
  border: 1px solid rgba(11, 37, 64, 0.1);
  padding: 16px 18px;
  transition: border-color 160ms var(--ease), box-shadow 160ms var(--ease);
}

.page-news .entry:hover {
  border-color: var(--signal);
  box-shadow: 0 0 0 1px rgba(53, 224, 208, 0.34);
}

.page-news .entry[open] {
  border-color: var(--signal);
}

.page-news .entry > summary {
  display: block;
  list-style: none;
  cursor: pointer;
  position: relative;
  padding-right: 26px;
}

.page-news .entry > summary::-webkit-details-marker {
  display: none;
}

.page-news .entry > summary::after {
  content: "+";
  position: absolute;
  top: -2px;
  right: 0;
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 600;
  line-height: 1;
  color: var(--sea-layer);
  transition: color 160ms var(--ease);
}

.page-news .entry[open] > summary::after {
  content: "−";
  color: var(--signal-deep);
}

.page-news .entry__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 14px;
  margin-bottom: 8px;
}

.page-news .entry .tag {
  color: var(--stone);
}

.page-news .entry__when {
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--stone);
}

.page-news .entry__title {
  display: block;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.55;
  color: var(--ink);
}

.page-news .entry__body {
  margin: 12px 0 0;
  padding-top: 12px;
  border-top: 1px dashed rgba(11, 37, 64, 0.16);
  font-size: 14px;
  line-height: 1.9;
  color: var(--stone);
}

.page-news .entry__body a {
  color: var(--signal-deep);
  text-decoration: none;
  border-bottom: 1px solid var(--signal);
  transition: color 160ms var(--ease);
}

.page-news .entry__body a:hover,
.page-news .entry__body a:focus-visible {
  color: var(--sea);
  border-bottom-color: var(--sea);
}

/* 留白带 */
.page-news .news-breath {
  padding-block: clamp(36px, 5.5vw, 76px);
}

.page-news .news-breath__inner {
  display: flex;
  align-items: center;
  gap: 20px;
}

.page-news .news-breath__num {
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--moss);
}

.page-news .news-breath__rule {
  flex: 1;
  height: 1px;
  background: var(--line-dark);
}

/* 专题系列 */
.page-news .series-layout {
  display: grid;
  gap: clamp(28px, 4vw, 56px);
  margin-top: clamp(28px, 4vw, 44px);
}

.page-news .series-list {
  display: grid;
  gap: 0;
}

.page-news .series-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 4px 18px;
  padding: 22px 0;
  border-top: 1px solid var(--line-dark-soft);
}

.page-news .series-item:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-news .series-item__num {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--signal);
  padding-top: 5px;
}

.page-news .series-item h3 {
  font-family: var(--font-narrow);
  font-size: clamp(18px, 2vw, 21px);
  font-weight: 700;
  line-height: 1.35;
  color: var(--cream);
  margin: 0 0 8px;
}

.page-news .series-item p {
  font-size: 14px;
  line-height: 1.85;
  color: var(--cream-80);
  margin: 0 0 10px;
}

.page-news .series-item__note {
  display: flex;
  align-items: baseline;
  gap: 8px;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--cream-64);
  margin: 0;
}

.page-news .series-item__note::before {
  content: "";
  width: 5px;
  height: 5px;
  flex: none;
  background: var(--signal);
  transform: translateY(-2px);
}

.page-news .series-figure {
  align-self: start;
}

/* 反馈面板 */
.page-news .feedback-panel {
  position: relative;
  display: grid;
  gap: clamp(24px, 4vw, 48px);
  padding: clamp(24px, 4vw, 48px);
  background: var(--sea-layer);
  border: 1px solid var(--line-dark);
  overflow: hidden;
}

.page-news .feedback-panel::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 96px;
  height: 2px;
  background: var(--signal);
}

.page-news .feedback-panel h2 {
  font-family: var(--font-narrow);
  font-size: clamp(26px, 3.2vw, 36px);
  font-weight: 700;
  line-height: 1.2;
  color: var(--cream);
  margin: 10px 0 14px;
}

.page-news .feedback-panel__body > p {
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--cream-80);
  margin: 0 0 20px;
  max-width: 520px;
}

.page-news .feedback-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-news .feedback-links a {
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--signal);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
  transition: border-color 180ms var(--ease);
}

.page-news .feedback-links a:hover,
.page-news .feedback-links a:focus-visible {
  border-bottom-color: var(--signal);
}

.page-news .feedback-panel__mail {
  font-size: clamp(14px, 1.7vw, 17px);
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--signal);
  margin: 0 0 10px;
  word-break: break-all;
}

.page-news .feedback-panel__hours {
  font-size: 12.5px;
  letter-spacing: 0.08em;
  color: var(--cream-64);
  margin: 0 0 22px;
}

.page-news .feedback-panel__side .btn {
  display: inline-block;
}

.page-news .feedback-panel__mail:focus-visible,
.page-news .topic-row:focus-within {
  outline: 2px solid var(--signal);
  outline-offset: 3px;
}

/* 断点 */
@media (min-width: 860px) {
  .page-news .pinned-card--feature {
    grid-template-columns: 1.45fr 1fr;
  }

  .page-news .pinned-card__media {
    order: 0;
    min-height: 100%;
  }

  .page-news .pinned-card__media img {
    height: 100%;
    max-height: none;
  }

  .page-news .feedback-panel {
    grid-template-columns: 1.1fr 1fr;
    align-items: start;
  }
}

@media (min-width: 880px) {
  .page-news .news-hero__inner {
    grid-template-columns: 1.05fr 1fr;
    align-items: end;
  }
}

@media (min-width: 900px) {
  .page-news .topics-layout {
    grid-template-columns: 1.25fr 1fr;
    align-items: start;
  }

  .page-news .series-layout {
    grid-template-columns: 1.35fr 1fr;
    align-items: start;
  }
}

@media (min-width: 960px) {
  .page-news .timeline__rail {
    left: 50%;
    margin-left: -1px;
  }

  .page-news .timeline__item {
    width: calc(50% - 24px);
    padding-left: 0;
    margin-bottom: 18px;
  }

  .page-news .timeline__item:nth-child(odd) {
    margin-right: auto;
  }

  .page-news .timeline__item:nth-child(even) {
    margin-left: auto;
  }

  .page-news .timeline__item:nth-child(odd)::before {
    left: auto;
    right: -30px;
  }

  .page-news .timeline__item:nth-child(even)::before {
    left: -30px;
    right: auto;
  }

  .page-news .timeline__item:nth-child(4n) {
    margin-bottom: 76px;
  }
}

@media (max-width: 520px) {
  .page-news .entry {
    padding: 14px 15px;
  }

  .page-news .entry__title {
    font-size: 15px;
  }

  .page-news .pinned-card__media img {
    max-height: 200px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news *,
  .page-news *::before,
  .page-news *::after {
    transition-duration: 0.01ms !important;
  }
}