/* ============================================================
   动态观察 / page-news
   ============================================================ */

.page-news {
  --news-gap: clamp(22px, 3.4vw, 44px);
  --news-pad-y: clamp(56px, 7.5vw, 100px);
  display: block;
  background: var(--base-900);
  color: var(--archive-050);
  overflow-x: clip;
}

.page-news .eyebrow {
  margin: 0 0 10px;
  color: var(--signal-400);
}

/* ---------- 首屏 ---------- */

.page-news .news-hero {
  position: relative;
  padding: clamp(22px, 3.6vw, 46px) 0 clamp(46px, 7vw, 88px);
  background:
    radial-gradient(118% 82% at 88% 2%, rgba(66, 245, 209, 0.13) 0%, rgba(6, 23, 19, 0) 62%),
    linear-gradient(180deg, var(--layer-800) 0%, var(--base-900) 78%);
  overflow: hidden;
}

.page-news .news-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(0deg, rgba(22, 74, 61, 0.5) 0 1px, transparent 1px 92px),
    repeating-linear-gradient(90deg, rgba(22, 74, 61, 0.5) 0 1px, transparent 1px 92px);
  opacity: 0.38;
  pointer-events: none;
}

.page-news .news-hero .wrap {
  position: relative;
  z-index: 1;
}

.page-news .news-hero__grid {
  display: grid;
  gap: var(--news-gap);
  margin-top: clamp(20px, 3.4vw, 42px);
}

.page-news .news-hero__copy {
  display: grid;
  gap: clamp(14px, 1.8vw, 22px);
  align-content: start;
}

.page-news .news-hero__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(34px, 6vw, 70px);
  line-height: 1.08;
  letter-spacing: -0.015em;
  text-wrap: balance;
}

.page-news .news-hero__lede {
  margin: 0;
  color: var(--mist-200);
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.8;
  max-width: 40em;
}

.page-news .news-hero__figure {
  margin: 0;
  aspect-ratio: 16 / 9;
  border: 1px solid var(--line-700);
  background: var(--layer-800);
  overflow: hidden;
}

.page-news .news-hero__figure img,
.page-news .news-log__figure img,
.page-news .rev-figure img,
.page-news .series-figure img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ---------- 本期索引 ---------- */

.page-news .news-contents {
  border-top: 1px solid var(--line-700);
}

.page-news .news-contents__grid {
  display: grid;
  gap: clamp(22px, 3.4vw, 42px);
}

.page-news .news-contents__head {
  display: grid;
  gap: 12px;
  align-content: start;
}

.page-news .news-contents__note {
  margin: 0;
  color: var(--index-600);
  font-size: 14px;
  line-height: 1.75;
  max-width: 30em;
}

.page-news .news-toc {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line-700);
}

.page-news .news-toc__item {
  border-bottom: 1px solid var(--line-700);
}

.page-news .news-toc__link {
  display: grid;
  grid-template-columns: 3.2em minmax(0, 1fr);
  gap: 4px 14px;
  padding: 16px 2px;
  color: inherit;
  text-decoration: none;
  transition: color 0.2s var(--ease);
}

.page-news .news-toc__num {
  grid-row: 1 / 3;
  align-self: start;
  padding-top: 3px;
  color: var(--signal-400);
  font-size: 12px;
  letter-spacing: 0.16em;
}

.page-news .news-toc__name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(17px, 2.2vw, 20px);
  line-height: 1.3;
}

.page-news .news-toc__meta {
  color: var(--index-600);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.03em;
}

.page-news .news-toc__link:hover .news-toc__name,
.page-news .news-toc__link:focus-visible .news-toc__name {
  color: var(--signal-400);
}

.page-news .news-toc__link:focus-visible {
  outline: 2px solid var(--focus-300);
  outline-offset: 3px;
}

/* ---------- 章节通用头 ---------- */

.page-news .news-sec__head {
  display: grid;
  gap: 12px;
  margin-bottom: clamp(26px, 4vw, 48px);
  max-width: 44em;
}

.page-news .news-sec__lead {
  margin: 0;
  color: var(--index-600);
  font-size: 15px;
  line-height: 1.8;
}

/* ---------- 节奏观察：条目列表 ---------- */

.page-news .entry-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line-700);
}

.page-news .entry {
  display: grid;
  gap: 10px;
  padding: clamp(20px, 3vw, 32px) 0;
  border-bottom: 1px solid var(--line-700);
}

.page-news .entry__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

.page-news .entry__round {
  color: var(--round-500);
  font-size: clamp(15px, 2.2vw, 19px);
  letter-spacing: 0.02em;
}

.page-news .entry__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: clamp(18px, 2.5vw, 24px);
  line-height: 1.36;
}

.page-news .entry__body {
  margin: 0;
  color: var(--mist-200);
  font-size: 15px;
  line-height: 1.8;
  max-width: 42em;
}

/* ---------- 版本记录：时间轴 ---------- */

.page-news .news-log__figure {
  margin: 0 0 clamp(32px, 4.6vw, 58px);
  aspect-ratio: 8 / 3;
  border: 1px solid var(--line-700);
  background: var(--layer-800);
  overflow: hidden;
}

.page-news .news-log__figure .media__caption {
  position: absolute;
  left: 0;
  bottom: 0;
  padding: 6px 12px;
  background: rgba(6, 23, 19, 0.82);
  color: var(--mist-200);
  font-size: 12px;
}

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

.page-news .news-axis {
  position: relative;
  padding-left: 30px;
}

.page-news .news-axis__line {
  position: absolute;
  left: 3px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: linear-gradient(180deg, var(--signal-400) 0%, var(--line-700) 26%, var(--line-700) 100%);
  transform-origin: top center;
}

.page-news .news-axis__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: clamp(24px, 3.4vw, 40px);
}

.page-news .news-axis__item {
  position: relative;
  display: grid;
  gap: 9px;
}

.page-news .news-axis__mark {
  position: absolute;
  left: -31px;
  top: 8px;
  width: 7px;
  height: 7px;
  background: var(--base-900);
  border: 1px solid var(--signal-400);
  transform: rotate(45deg);
}

.page-news .news-axis__round {
  color: var(--round-500);
  font-size: 13px;
  letter-spacing: 0.08em;
}

.page-news .news-axis__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(17px, 2.3vw, 21px);
  line-height: 1.4;
}

.page-news .news-axis__body {
  margin: 0;
  color: var(--mist-200);
  font-size: 15px;
  line-height: 1.8;
  max-width: 40em;
}

.page-news .news-axis__item .tag {
  justify-self: start;
}

/* ---------- 数据修订 ---------- */

.page-news .news-revisions__grid {
  display: grid;
  gap: clamp(26px, 3.6vw, 48px);
}

.page-news .rev-figure {
  position: relative;
  margin: 0;
  aspect-ratio: 14 / 9;
  border: 1px solid var(--line-700);
  background: var(--layer-800);
  overflow: hidden;
}

.page-news .rev-figure .media__caption {
  position: absolute;
  left: 0;
  bottom: 0;
  padding: 6px 12px;
  background: rgba(6, 23, 19, 0.82);
  color: var(--mist-200);
  font-size: 12px;
}

.page-news .rev-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line-700);
}

.page-news .rev-item {
  display: grid;
  gap: 8px;
  padding: clamp(18px, 2.6vw, 26px) 0;
  border-bottom: 1px solid var(--line-700);
}

.page-news .rev-item__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

.page-news .rev-item__round {
  color: var(--index-600);
  font-size: 13px;
  letter-spacing: 0.06em;
}

.page-news .rev-item__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(16px, 2.1vw, 19px);
  line-height: 1.4;
}

.page-news .rev-item__body {
  margin: 0;
  color: var(--mist-200);
  font-size: 14.5px;
  line-height: 1.8;
  max-width: 40em;
}

/* ---------- 专题系列 ---------- */

.page-news .series-figure {
  position: relative;
  margin: 0 0 clamp(26px, 3.6vw, 44px);
  aspect-ratio: 8 / 5;
  border: 1px solid var(--line-700);
  background: var(--layer-800);
  overflow: hidden;
}

.page-news .series-figure .media__caption {
  position: absolute;
  left: 0;
  bottom: 0;
  padding: 6px 12px;
  background: rgba(6, 23, 19, 0.82);
  color: var(--mist-200);
  font-size: 12px;
}

.page-news .series-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line-700);
  border: 1px solid var(--line-700);
}

.page-news .series-card {
  display: grid;
  gap: 10px;
  padding: clamp(20px, 3vw, 30px);
  background: var(--base-900);
}

.page-news .series-card__id {
  color: var(--signal-400);
  font-size: 12px;
  letter-spacing: 0.2em;
}

.page-news .series-card__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(17px, 2.2vw, 20px);
  line-height: 1.35;
}

.page-news .series-card__body {
  margin: 0;
  color: var(--mist-200);
  font-size: 14.5px;
  line-height: 1.8;
}

.page-news .series-card__count {
  color: var(--round-500);
  font-size: 12px;
  letter-spacing: 0.06em;
}

/* ---------- 订阅收束 ---------- */

.page-news .news-subscribe {
  position: relative;
  overflow: hidden;
  background:
    linear-gradient(180deg, var(--base-900) 0%, var(--layer-800) 100%);
  border-top: 1px solid var(--line-700);
}

.page-news .news-subscribe__inner {
  display: grid;
  gap: clamp(20px, 3vw, 36px);
  align-items: end;
}

.page-news .news-subscribe__copy {
  display: grid;
  gap: 12px;
  max-width: 40em;
}

.page-news .news-subscribe__lede {
  margin: 0;
  color: var(--mist-200);
  font-size: 15px;
  line-height: 1.8;
}

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

.page-news .news-subscribe__anchor {
  position: absolute;
  right: clamp(-10px, 1vw, 8px);
  top: -0.24em;
  font-size: clamp(88px, 18vw, 200px);
  line-height: 1;
  color: var(--signal-400);
  opacity: 0.07;
  pointer-events: none;
  user-select: none;
}

/* ---------- 响应式 ---------- */

@media (min-width: 720px) {
  .page-news .entry {
    grid-template-columns: minmax(0, 3fr) minmax(0, 9fr);
    gap: 12px 34px;
  }

  .page-news .entry__meta {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

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

@media (min-width: 920px) {
  .page-news .news-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: end;
  }

  .page-news .news-contents__grid {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    align-items: start;
  }

  .page-news .news-toc__link {
    grid-template-columns: 4em minmax(0, 1fr) minmax(0, 14em);
    align-items: baseline;
  }

  .page-news .news-toc__num {
    grid-row: auto;
    padding-top: 0;
  }

  .page-news .news-toc__meta {
    text-align: right;
  }

  .page-news .entry {
    grid-template-columns: minmax(0, 3fr) minmax(0, 9fr);
  }

  .page-news .news-axis {
    padding-left: 0;
  }

  .page-news .news-axis__line {
    left: 0;
    right: 0;
    top: 0;
    bottom: auto;
    width: auto;
    height: 1px;
    background: linear-gradient(90deg, var(--signal-400) 0%, var(--line-700) 40%, var(--line-700) 100%);
  }

  .page-news .news-axis__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: clamp(22px, 2.6vw, 34px);
    padding-top: 34px;
  }

  .page-news .news-axis__item {
    padding-right: 12px;
  }

  .page-news .news-axis__mark {
    left: 0;
    top: -38px;
  }

  .page-news .news-axis__item:nth-child(n + 4) .news-axis__mark {
    top: auto;
  }

  .page-news .news-revisions__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
  }

  .page-news .series-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-news .news-subscribe__inner {
    grid-template-columns: minmax(0, 8fr) minmax(0, 4fr);
  }

  .page-news .news-subscribe__actions {
    justify-content: flex-end;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .news-toc__link,
  .page-news .news-axis__mark {
    transition: none;
  }
}