.page-news {
  --news-rail: 244px;
  --news-gap: 44px;
  --news-line: rgba(11, 15, 20, 0.14);
  background: var(--am-paper);
  color: var(--am-ink);
}

/* ---------- 面包屑 ---------- */
.page-news .am-breadcrumb {
  padding: 18px 0 6px;
  font-size: 13px;
}

/* ---------- 首屏 ---------- */
.page-news .news-hero {
  position: relative;
  padding: 26px 0 58px;
}

.page-news .news-hero__band {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 5px;
  background: linear-gradient(
    90deg,
    var(--am-tile) 0 38%,
    var(--am-gold) 38% 60%,
    var(--am-coral) 60% 74%,
    var(--am-mist) 74% 100%
  );
}

.page-news .news-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  gap: 52px;
  align-items: center;
}

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

.page-news .news-hero__eyebrow {
  display: inline-block;
  margin: 0 0 18px;
  padding: 6px 12px;
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--am-tile);
  background: rgba(31, 78, 156, 0.07);
  border: 1px solid rgba(31, 78, 156, 0.24);
  border-radius: var(--am-radius);
}

.page-news .news-hero__lead {
  max-width: 46ch;
  color: var(--am-ink-soft);
}

.page-news .news-hero__facts {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
  max-width: 46ch;
}

.page-news .news-hero__facts li {
  display: flex;
  gap: 12px;
  align-items: baseline;
  padding-bottom: 10px;
  font-size: 15px;
  line-height: 1.6;
  color: var(--am-ink-soft);
  border-bottom: 1px dashed var(--news-line);
}

.page-news .news-hero__facts .am-mono {
  flex: none;
  font-size: 11px;
  color: var(--am-gold);
  letter-spacing: 0.08em;
}

.page-news .news-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.page-news .news-hero__figure {
  margin: 0;
  padding: 10px;
  background: var(--am-white);
  border: 1px solid var(--am-line-strong);
  border-radius: var(--am-radius);
  box-shadow: var(--am-shadow-m);
}

.page-news .news-hero__img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1200 / 640;
  object-fit: cover;
  background: var(--am-mist);
  border-radius: 2px;
}

.page-news .news-hero__cap {
  margin: 10px 2px 2px;
  font-family: var(--am-font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--am-slate);
}

/* ---------- 主体布局 ---------- */
.page-news .news-body {
  padding: 52px 0 84px;
}

.page-news .news-layout {
  display: grid;
  grid-template-columns: var(--news-rail) minmax(0, 1fr);
  gap: var(--news-gap);
  align-items: start;
}

.page-news .news-side {
  position: sticky;
  top: calc(var(--am-header-h) + 20px);
  padding: 20px 18px;
  background: var(--am-white);
  border: 1px solid var(--news-line);
  border-radius: var(--am-radius);
  box-shadow: var(--am-shadow-s);
}

.page-news .news-side__title {
  margin: 0 0 14px;
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--am-slate);
}

.page-news .news-side__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-news .news-side__link {
  display: flex;
  gap: 10px;
  align-items: baseline;
  padding: 9px 10px;
  font-size: 14px;
  line-height: 1.5;
  color: var(--am-ink-soft);
  text-decoration: none;
  border-left: 2px solid transparent;
  border-radius: 2px;
  transition: background 0.18s var(--am-ease), border-color 0.18s var(--am-ease), color 0.18s var(--am-ease);
}

.page-news .news-side__link .am-mono {
  flex: none;
  font-size: 10px;
  letter-spacing: 0.08em;
  color: var(--am-gold);
}

.page-news .news-side__link:hover {
  background: var(--am-paper);
  border-left-color: var(--am-slate);
}

.page-news .news-side__link[aria-current="true"] {
  background: rgba(31, 78, 156, 0.08);
  border-left-color: var(--am-tile);
  color: var(--am-tile);
  font-weight: 600;
}

.page-news .news-side__note {
  margin-top: 20px;
  padding: 14px 12px;
  background: rgba(216, 227, 240, 0.34);
  border: 1px solid var(--am-mist);
  border-radius: var(--am-radius);
}

.page-news .news-side__note-title {
  margin: 0 0 8px;
  font-size: 10px;
  letter-spacing: 0.14em;
  color: var(--am-slate);
}

.page-news .news-side__note .am-text {
  margin: 0 0 12px;
  font-size: 13px;
  line-height: 1.7;
}

/* ---------- 系列区块 ---------- */
.page-news .news-stream {
  min-width: 0;
}

.page-news .news-series + .news-series {
  margin-top: 24px;
  padding-top: 40px;
  border-top: 1px solid var(--am-line-strong);
}

.page-news .news-series__head {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 22px;
}

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

.page-news .news-series__intro .am-h2 {
  margin: 0 0 8px;
}

.page-news .news-series__desc {
  margin: 0;
  max-width: 56ch;
  color: var(--am-slate);
}

.page-news .news-series__icon {
  flex: none;
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  color: var(--am-tile);
  background: var(--am-white);
  border: 1px solid var(--news-line);
  border-radius: 50%;
}

.page-news .news-figure {
  margin: 0 0 26px;
}

.page-news .news-figure__img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 900 / 560;
  object-fit: cover;
  background: var(--am-mist);
  border: 1px solid var(--news-line);
  border-radius: var(--am-radius);
}

/* ---------- 条目 ---------- */
.page-news .news-list {
  margin: 0;
  padding: 0;
}

.page-news .news-item {
  position: relative;
  display: grid;
  grid-template-columns: 104px minmax(0, 1fr);
  gap: 22px;
  padding: 20px 0 20px 18px;
  border-top: 1px solid var(--news-line);
}

.page-news .news-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 20px;
  bottom: 20px;
  width: 2px;
  background: var(--news-line);
  transition: width 0.22s var(--am-ease), background 0.22s var(--am-ease);
}

.page-news .news-item:hover::before {
  width: 6px;
  background: var(--am-slate);
}

.page-news .news-item--pin::before {
  width: 4px;
  background: var(--am-tile);
}

.page-news .news-item--pin:hover::before {
  width: 8px;
  background: var(--am-tile);
}

.page-news .news-item__time {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 6px;
  padding-top: 3px;
}

.page-news .news-item__time .am-mono {
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--am-slate);
}

.page-news .news-item--pin .news-item__time .am-mono {
  color: var(--am-tile);
}

.page-news .news-item__pin {
  display: inline-block;
  padding: 2px 7px;
  font-size: 10px;
  letter-spacing: 0.16em;
  color: var(--am-white);
  background: var(--am-tile);
  border-radius: 2px;
}

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

.page-news .news-item__title {
  margin: 0 0 8px;
}

.page-news .news-item__body .am-text {
  margin: 0;
  color: var(--am-ink-soft);
}

.page-news .news-item__body .am-text a {
  color: var(--am-tile);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-news .news-item__more {
  margin-top: 12px;
}

.page-news .news-item__more summary {
  display: inline-block;
  cursor: pointer;
  list-style: none;
  font-family: var(--am-font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--am-tile);
}

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

.page-news .news-item__more summary::before {
  content: "+ ";
  color: var(--am-gold);
}

.page-news .news-item__more[open] summary::before {
  content: "− ";
}

.page-news .news-item__more .am-text {
  margin-top: 10px;
  padding: 12px 14px;
  background: rgba(216, 227, 240, 0.36);
  border-left: 2px solid var(--am-tile);
  border-radius: 0 2px 2px 0;
  font-size: 14px;
}

.page-news .news-tagrow {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}

.page-news .news-tag {
  display: inline-block;
  padding: 3px 9px;
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--am-slate);
  background: var(--am-mist);
  border-radius: 2px;
}

.page-news .news-tag--series {
  color: var(--am-tile);
  background: rgba(31, 78, 156, 0.1);
}

/* ---------- 子分组 ---------- */
.page-news .news-subgroup {
  margin-top: 30px;
}

.page-news .news-subgroup:first-of-type {
  margin-top: 0;
}

.page-news .news-subgroup__title {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 6px;
  font-family: var(--am-font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--am-gold);
}

.page-news .news-subgroup__title::after {
  content: "";
  display: inline-block;
  width: 52px;
  height: 1px;
  background: var(--am-line-strong);
}

/* ---------- 订阅与反馈 ---------- */
.page-news .news-follow__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
  gap: 28px;
  align-items: start;
}

.page-news .news-follow__col {
  min-width: 0;
  padding: 24px 22px;
  background: var(--am-white);
  border: 1px solid var(--news-line);
  border-radius: var(--am-radius);
}

.page-news .news-follow__col--contact {
  background: var(--am-deep);
  border-color: var(--am-deep);
  color: var(--am-paper);
}

.page-news .news-follow__col .am-h3 {
  margin: 0 0 12px;
}

.page-news .news-follow__col .am-text {
  margin: 0 0 16px;
  color: var(--am-ink-soft);
}

.page-news .news-follow__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-news .news-follow__list li {
  position: relative;
  padding-left: 16px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--am-ink-soft);
}

.page-news .news-follow__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 6px;
  background: var(--am-gold);
  border-radius: 1px;
  transform: rotate(45deg);
}

.page-news .news-follow__list strong {
  color: var(--am-ink);
  font-weight: 600;
}

.page-news .news-follow__label {
  margin: 0 0 12px;
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--am-gold);
}

.page-news .news-follow__col--contact .am-text {
  color: var(--am-paper);
}

.page-news .news-follow__contact {
  font-size: 15px;
  line-height: 1.9;
}

.page-news .news-follow__col--contact .am-muted {
  display: block;
  margin: 0 0 20px;
  font-size: 13px;
  line-height: 1.7;
  color: rgba(244, 241, 234, 0.66);
}

/* ---------- 响应式 ---------- */
@media (max-width: 1080px) {
  .page-news .news-layout {
    grid-template-columns: minmax(0, 1fr);
    gap: 32px;
  }

  .page-news .news-side {
    position: static;
  }

  .page-news .news-side__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 4px 12px;
  }

  .page-news .news-side__note {
    max-width: 520px;
  }
}

@media (max-width: 900px) {
  .page-news .news-hero {
    padding: 18px 0 44px;
  }

  .page-news .news-hero__grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 30px;
  }

  .page-news .news-hero__lead,
  .page-news .news-hero__facts {
    max-width: none;
  }

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

@media (max-width: 720px) {
  .page-news .news-body {
    padding: 38px 0 60px;
  }

  .page-news .news-item {
    grid-template-columns: minmax(0, 1fr);
    gap: 8px;
    padding: 18px 0 18px 14px;
  }

  .page-news .news-item::before,
  .page-news .news-item--pin::before {
    top: 18px;
    bottom: 18px;
  }

  .page-news .news-item__time {
    flex-direction: row;
    align-items: center;
    gap: 10px;
    padding-top: 0;
  }

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

  .page-news .news-series__icon {
    margin-left: 0;
    width: 32px;
    height: 32px;
  }

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

  .page-news .news-follow__col {
    padding: 20px 16px;
  }
}

@media (max-width: 480px) {
  .page-news .news-hero__actions {
    flex-direction: column;
    align-items: stretch;
  }

  .page-news .news-hero__actions .am-btn {
    text-align: center;
  }
}