/* ==========================================================
   内容观察 / news  —— 页面专属样式
   全部选择器限定在 .page-news 作用域内
   ========================================================== */

.page-news {
  --news-radius: 14px;
  --news-radius-sm: 10px;
  --news-tap: rgba(31, 78, 107, .32);
  display: block;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  overflow-x: clip;
}

/* ---------- 面包屑 ---------- */
.page-news .news-crumb {
  padding-top: 26px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--mono-ink);
}
.page-news .news-crumb a {
  color: var(--blue);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color .18s var(--ease), color .18s var(--ease);
}
.page-news .news-crumb a:hover,
.page-news .news-crumb a:focus-visible {
  border-bottom-color: var(--red);
  color: var(--red);
}
.page-news .news-crumb__sep {
  margin: 0 8px;
  color: var(--rule);
}
.page-news .news-crumb__here {
  color: var(--ink);
}

/* ---------- 首屏 ---------- */
.page-news .news-masthead {
  position: relative;
  padding: 34px 0 64px;
  background:
    radial-gradient(120% 92% at 88% 0%, rgba(31, 78, 107, .11), transparent 62%),
    linear-gradient(180deg, var(--paper) 0%, var(--paper-2) 100%);
  border-bottom: 1px solid var(--rule);
}
.page-news .news-masthead__inner {
  display: grid;
  gap: 34px;
  align-items: end;
}
.page-news .news-eyebrow {
  display: inline-block;
  margin: 0 0 20px;
  padding: 5px 13px;
  border: 1px solid var(--news-tap);
  border-radius: 999px;
  background: var(--glass);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .14em;
  color: var(--blue);
}
.page-news .news-title {
  margin: 0 0 20px;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: clamp(29px, 5.4vw, 44px);
  line-height: 1.3;
  letter-spacing: -.01em;
  color: var(--ink);
}
.page-news .news-standfirst {
  margin: 0;
  max-width: 48ch;
  font-size: 16.5px;
  line-height: 1.9;
  color: var(--ink);
}
.page-news .news-jump {
  margin: 26px 0 0;
}
.page-news .news-jump a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 17px;
  border: 1px solid var(--news-tap);
  border-radius: 999px;
  background: var(--glass);
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .08em;
  color: var(--blue);
  text-decoration: none;
  transition: background-color .18s var(--ease), color .18s var(--ease), border-color .18s var(--ease);
}
.page-news .news-jump a:hover,
.page-news .news-jump a:focus-visible {
  background: var(--blue);
  border-color: var(--blue);
  color: var(--on-dark);
}
.page-news .news-masthead__figure {
  position: relative;
  margin: 0;
}
.page-news .news-masthead__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1400 / 520;
  object-fit: cover;
  border: 1px solid var(--rule);
  border-radius: var(--news-radius);
  box-shadow: var(--shadow-card);
}
.page-news .news-masthead__figure::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: var(--news-radius);
  pointer-events: none;
  opacity: .42;
  background-image:
    linear-gradient(rgba(31, 78, 107, .18) 1px, transparent 1px),
    linear-gradient(90deg, rgba(31, 78, 107, .18) 1px, transparent 1px);
  background-size: 44px 44px;
}

/* ---------- 主区：索引 + 条目流 ---------- */
.page-news .news-body {
  padding: 62px 0 0;
}
.page-news .news-body__inner {
  display: grid;
  gap: 38px;
}
.page-news .news-index {
  border-top: 1px solid var(--rule);
  padding-top: 18px;
}
.page-news .news-index__title {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .18em;
  color: var(--mono-ink);
}
.page-news .news-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.page-news .news-index__link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: 40px;
  padding: 8px 12px;
  border-left: 2px solid transparent;
  border-radius: 8px;
  color: var(--ink);
  text-decoration: none;
  font-size: 14.5px;
  transition: background-color .18s var(--ease), border-color .18s var(--ease), color .18s var(--ease);
}
.page-news .news-index__link:hover,
.page-news .news-index__link:focus-visible {
  background: var(--paper-2);
  border-left-color: var(--red);
  color: var(--blue);
}
.page-news .news-index__no {
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--mono-ink);
}

.page-news .news-anchor {
  display: block;
  scroll-margin-top: 96px;
}

.page-news .news-section__head {
  margin-bottom: 30px;
}
.page-news .news-chapter {
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--red);
}
.page-news .news-h2 {
  margin: 0 0 14px;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: clamp(23px, 3.6vw, 31px);
  line-height: 1.35;
  letter-spacing: -.01em;
  color: var(--ink);
}
.page-news .news-section__lead {
  margin: 0;
  max-width: 62ch;
  font-size: 15.5px;
  line-height: 1.9;
  color: var(--ink-2);
}

/* ---------- 标签页 ---------- */
.page-news .tabs__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 26px;
}
.page-news .tabs__tab {
  appearance: none;
  padding: 9px 17px;
  border: 1px solid var(--rule);
  border-radius: 999px;
  background: var(--glass);
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.4;
  color: var(--ink);
  cursor: pointer;
  transition: background-color .18s var(--ease), color .18s var(--ease), border-color .18s var(--ease);
}
.page-news .tabs__tab:hover {
  border-color: var(--news-tap);
  color: var(--blue);
}
.page-news .tabs__tab[aria-selected="true"] {
  background: var(--blue);
  border-color: var(--blue);
  color: var(--on-dark);
}
.page-news .tabs__tab:focus-visible {
  outline: 2px solid var(--red);
  outline-offset: 2px;
}
.page-news .tabs__panel:focus-visible {
  outline: 2px solid var(--red);
  outline-offset: 6px;
  border-radius: 6px;
}

/* ---------- 条目卡 ---------- */
.page-news .news-feed {
  display: grid;
  gap: 20px;
}
.page-news .news-card {
  display: flex;
  flex-direction: column;
  gap: 11px;
  padding: 22px 22px 18px;
  border: 1px solid var(--rule);
  border-radius: var(--news-radius);
  background: var(--paper);
  box-shadow: var(--shadow-card);
  transition: transform .22s var(--ease), border-color .22s var(--ease);
}
.page-news .news-card:hover {
  transform: translateY(-3px);
  border-color: var(--news-tap);
}
.page-news .news-card__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}
.page-news .news-card__tag {
  padding: 3px 10px;
  border: 1px solid var(--news-tap);
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .1em;
  color: var(--blue);
}
.page-news .news-card__time {
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--mono-ink);
}
.page-news .news-card__time--new::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  margin-right: 7px;
  border-radius: 50%;
  background: var(--red);
  vertical-align: middle;
}
.page-news .news-card__title {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 18.5px;
  line-height: 1.5;
  color: var(--ink);
}
.page-news .news-card--lead .news-card__title {
  font-size: 21px;
}
.page-news .news-card__sum {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink-2);
}
.page-news .news-card__more {
  margin-top: auto;
  padding-top: 13px;
  border-top: 1px dashed var(--rule);
}
.page-news .news-card__more summary {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  list-style: none;
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--blue);
}
.page-news .news-card__more summary::-webkit-details-marker {
  display: none;
}
.page-news .news-card__more summary::after {
  content: "＋";
  font-size: 13px;
  line-height: 1;
}
.page-news .news-card__more[open] summary::after {
  content: "－";
}
.page-news .news-card__more summary:focus-visible {
  outline: 2px solid var(--red);
  outline-offset: 3px;
  border-radius: 4px;
}
.page-news .news-card__more p {
  margin: 13px 0 0;
  font-size: 14.5px;
  line-height: 1.88;
  color: var(--ink);
}

/* ---------- 通用章节 ---------- */
.page-news .news-section {
  padding: 92px 0 0;
}
.page-news .news-section:last-of-type {
  padding-bottom: 8px;
}

/* ---------- 专题卡片带 ---------- */
.page-news .series-wrap {
  position: relative;
  margin-top: 8px;
}
.page-news .series-wrap::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  bottom: 22px;
  width: 44px;
  pointer-events: none;
  background: linear-gradient(90deg, transparent, var(--paper));
}
.page-news .series-rail {
  list-style: none;
  margin: 0;
  padding: 4px 0 22px;
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(228px, 76%);
  gap: 18px;
  overflow-x: auto;
  overscroll-behavior-x: contain;
  scroll-snap-type: x mandatory;
  scrollbar-width: thin;
  scrollbar-color: var(--rule) transparent;
}
.page-news .series-rail:focus-visible {
  outline: 2px solid var(--red);
  outline-offset: 4px;
  border-radius: 8px;
}
.page-news .series-rail > li {
  scroll-snap-align: start;
}
.page-news .series-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  height: 100%;
  padding: 20px;
  border: 1px solid var(--rule);
  border-radius: var(--news-radius);
  background: var(--paper-2);
}
.page-news .series-card__fig {
  margin: 0 0 4px;
  border: 1px solid var(--rule);
  border-radius: var(--news-radius-sm);
  overflow: hidden;
  background: var(--paper);
}
.page-news .series-card__fig img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: cover;
}
.page-news .series-card__no {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .14em;
  color: var(--red);
}
.page-news .series-card__title {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 19px;
  line-height: 1.45;
  color: var(--ink);
}
.page-news .series-card__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--ink-2);
}
.page-news .series-card__foot {
  margin: auto 0 0;
  padding-top: 12px;
  border-top: 1px dashed var(--rule);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .04em;
  color: var(--mono-ink);
}

/* ---------- 更新记录 ---------- */
.page-news .news-versions__fig {
  margin: 0 0 40px;
  border: 1px solid var(--rule);
  border-radius: var(--news-radius);
  overflow: hidden;
}
.page-news .news-versions__fig img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1200 / 420;
  object-fit: cover;
}
.page-news .batch-list {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
}
.page-news .batch-list::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 8px;
  bottom: 14px;
  width: 1px;
  background: var(--rule);
}
.page-news .batch {
  position: relative;
  padding: 0 0 34px 36px;
}
.page-news .batch:last-child {
  padding-bottom: 0;
}
.page-news .batch::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  width: 9px;
  height: 9px;
  border: 2px solid var(--blue);
  border-radius: 50%;
  background: var(--paper);
}
.page-news .batch--latest::before {
  border-color: var(--red);
  background: var(--red);
}
.page-news .batch__no {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .14em;
  color: var(--mono-ink);
}
.page-news .batch__title {
  margin: 0 0 10px;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 18px;
  line-height: 1.5;
  color: var(--ink);
}
.page-news .batch p {
  margin: 0 0 10px;
  max-width: 66ch;
  font-size: 15px;
  line-height: 1.88;
  color: var(--ink-2);
}
.page-news .batch__tags {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .04em;
  color: var(--mono-ink);
}

/* ---------- 往期归档 ---------- */
.page-news .archive-grid {
  display: grid;
  gap: 34px;
}
.page-news .archive-list {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  border-top: 1px solid var(--rule);
}
.page-news .archive-item {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 6px 18px;
  padding: 15px 2px;
  border-bottom: 1px dashed var(--rule);
}
.page-news .archive-item__name {
  font-size: 15.5px;
  color: var(--ink);
}
.page-news .archive-item__meta {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--mono-ink);
}
.page-news .archive-note {
  margin: 24px 0 0;
  max-width: 60ch;
  font-size: 15px;
  line-height: 1.9;
  color: var(--ink-2);
}
.page-news .archive-note a {
  color: var(--blue);
  text-decoration: none;
  border-bottom: 1px solid var(--red);
  transition: color .18s var(--ease);
}
.page-news .archive-note a:hover,
.page-news .archive-note a:focus-visible {
  color: var(--red);
}
.page-news .archive-fig {
  margin: 0;
  border: 1px solid var(--rule);
  border-radius: var(--news-radius);
  overflow: hidden;
  background: var(--paper-2);
}
.page-news .archive-fig img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 900 / 700;
  object-fit: cover;
}

/* ---------- 后续入口 ---------- */
.page-news .news-next {
  padding: 92px 0 96px;
}
.page-news .news-next__grid {
  display: grid;
  gap: 16px;
  margin-top: 28px;
}
.page-news .news-next__card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 22px 20px;
  border: 1px solid var(--rule);
  border-radius: var(--news-radius);
  background: var(--paper-2);
  color: var(--ink);
  text-decoration: none;
  transition: background-color .2s var(--ease), border-color .2s var(--ease), transform .2s var(--ease);
}
.page-news .news-next__card:hover,
.page-news .news-next__card:focus-visible {
  background: var(--paper);
  border-color: var(--news-tap);
  transform: translateY(-3px);
}
.page-news .news-next__card:focus-visible {
  outline: 2px solid var(--red);
  outline-offset: 2px;
}
.page-news .news-next__no {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .14em;
  color: var(--red);
}
.page-news .news-next__name {
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 18px;
  line-height: 1.45;
  color: var(--blue);
}
.page-news .news-next__desc {
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--ink-2);
}

/* ==========================================================
   媒体查询
   ========================================================== */

@media (max-width: 719px) {
  .page-news .news-masthead__figure img {
    aspect-ratio: 3 / 2;
  }
  .page-news .news-section,
  .page-news .news-next {
    padding-top: 68px;
  }
  .page-news .news-next {
    padding-bottom: 72px;
  }
}

@media (min-width: 720px) {
  .page-news .news-feed {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-news .news-card--lead {
    grid-column: 1 / -1;
  }
  .page-news .news-next__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-news .series-rail {
    grid-auto-columns: minmax(248px, 33%);
  }
}

@media (min-width: 920px) {
  .page-news .news-masthead {
    padding: 46px 0 78px;
  }
  .page-news .news-masthead__inner {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    gap: 56px;
  }
  .page-news .news-body {
    padding-top: 78px;
  }
}

@media (min-width: 980px) {
  .page-news .news-body__inner {
    grid-template-columns: 214px minmax(0, 1fr);
    gap: 54px;
    align-items: start;
  }
  .page-news .news-index {
    position: sticky;
    top: 28px;
  }
  .page-news .news-index__list {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 2px;
  }
  .page-news .news-index__link {
    width: 100%;
  }
  .page-news .archive-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, .82fr);
    gap: 56px;
    align-items: start;
  }
}

@media (min-width: 1180px) {
  .page-news .news-section {
    padding-top: 112px;
  }
  .page-news .series-rail {
    grid-auto-columns: minmax(258px, 25%);
    gap: 22px;
  }
}

/* ---------- 动效偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-news .news-card,
  .page-news .news-next__card,
  .page-news .news-index__link,
  .page-news .news-jump a,
  .page-news .tabs__tab {
    transition: none;
  }
  .page-news .news-card:hover,
  .page-news .news-next__card:hover {
    transform: none;
  }
}