.page-news {
  --news-rail-w: 232px;
  --news-no: #5A6EA3;
  --news-line: rgba(30, 43, 77, 0.72);
  position: relative;
  background: var(--ink);
  color: var(--paper);
  padding-bottom: clamp(40px, 7vw, 88px);
}

.page-news::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: min(720px, 88vh);
  background:
    radial-gradient(120% 78% at 84% -6%, rgba(217, 162, 74, 0.20) 0%, rgba(217, 162, 74, 0) 58%),
    radial-gradient(86% 62% at 4% 2%, rgba(63, 224, 208, 0.10) 0%, rgba(63, 224, 208, 0) 60%);
  pointer-events: none;
}

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

.page-news .page-news__top {
  padding-top: calc(var(--header-h) + 16px);
}

.page-news .breadcrumb {
  margin: 0;
}

/* ============ 主体网格 ============ */
.page-news .news-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(18px, 3vw, 26px);
  padding-top: clamp(16px, 3vw, 26px);
  padding-bottom: clamp(40px, 6vw, 80px);
}

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

/* ============ 左侧情报索引 ============ */
.page-news .news-rail {
  min-width: 0;
}

.page-news .news-rail__head {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--line);
  color: rgba(90, 110, 163, 0.9);
}

.page-news .news-rail__list {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 6px;
  scrollbar-width: thin;
}

.page-news .news-rail__item {
  position: relative;
  display: flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 8px;
  padding: 9px 14px;
  border-radius: var(--pill);
  border: 1px solid var(--news-line);
  color: var(--warm);
  font-size: 14px;
  line-height: 1.2;
  cursor: pointer;
  white-space: nowrap;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease), background-color 0.18s var(--ease);
}

.page-news .news-rail__input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.page-news .news-rail__count {
  font-size: 12px;
  color: rgba(90, 110, 163, 0.95);
}

.page-news .news-rail__item:has(input:checked) {
  color: var(--paper);
  border-color: rgba(217, 162, 74, 0.6);
  background: linear-gradient(90deg, rgba(217, 162, 74, 0.18), rgba(217, 162, 74, 0.02));
}

.page-news .news-rail__item:has(input:checked) .news-rail__count {
  color: var(--gold-hi);
}

.page-news .news-rail__item:has(input:focus-visible) {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-news .news-rail__item:hover {
  color: var(--paper);
  border-color: rgba(217, 162, 74, 0.4);
}

.page-news .news-rail__foot {
  margin: 16px 0 0;
}

.page-news .news-rail__cta {
  display: inline-flex;
  justify-content: center;
  width: 100%;
  padding: 10px 16px;
  font-size: 14px;
}

/* 筛选生效：:has 不支持的浏览器退回为全部可见 */
.page-news .news-layout:has(#nf-batch:checked) .news-item:not([data-cat="batch"]),
.page-news .news-layout:has(#nf-version:checked) .news-item:not([data-cat="version"]),
.page-news .news-layout:has(#nf-entry:checked) .news-item:not([data-cat="entry"]),
.page-news .news-layout:has(#nf-doc:checked) .news-item:not([data-cat="doc"]),
.page-news .news-layout:has(#nf-biz:checked) .news-item:not([data-cat="biz"]) {
  display: none;
}

/* ============ 首屏 ============ */
.page-news .news-hero {
  padding-bottom: clamp(20px, 3vw, 30px);
}

.page-news .news-hero__title {
  margin: 14px 0 16px;
  max-width: 24ch;
  font-size: clamp(30px, 5.2vw, 54px);
  line-height: 1.12;
  letter-spacing: -0.01em;
  font-weight: 800;
}

.page-news .news-hero__lede {
  max-width: 62ch;
  color: var(--warm);
}

.page-news .news-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.page-news .news-hero__actions .btn {
  padding: 12px 24px;
}

/* ============ 置顶速览 ============ */
.page-news .news-lead {
  position: relative;
  margin: 8px 0 clamp(32px, 5vw, 56px);
  padding: clamp(22px, 3.4vw, 40px) clamp(20px, 3.2vw, 40px) clamp(20px, 3vw, 32px);
  border: 1px solid var(--news-line);
  border-radius: 2px;
  background: linear-gradient(180deg, rgba(14, 23, 48, 0.92) 0%, rgba(7, 11, 24, 0.7) 100%);
}

.page-news .news-lead::before,
.page-news .news-lead::after {
  content: "";
  position: absolute;
  width: 14px;
  height: 14px;
  border: 1px solid var(--gold);
}

.page-news .news-lead::before {
  top: 8px;
  left: 8px;
  border-right: 0;
  border-bottom: 0;
}

.page-news .news-lead::after {
  right: 8px;
  bottom: 8px;
  border-left: 0;
  border-top: 0;
}

.page-news .news-lead__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: rgba(90, 110, 163, 0.95);
}

.page-news .news-lead__title {
  margin: 0 0 12px;
  font-size: clamp(22px, 3vw, 30px);
  line-height: 1.3;
  font-weight: 800;
}

.page-news .news-lead__text {
  margin: 0;
  max-width: 66ch;
  color: var(--warm);
  line-height: 1.78;
}

.page-news .news-lead__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px 18px;
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px solid var(--news-line);
}

.page-news .news-lead__stats .stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.page-news .news-lead__stats .stat__num {
  font-family: var(--font-mono);
  font-size: clamp(22px, 3vw, 30px);
  line-height: 1;
  font-weight: 700;
  color: var(--gold-hi);
  font-variant-numeric: tabular-nums;
}

.page-news .news-lead__stats .stat__label {
  font-size: 13px;
  color: var(--warm);
}

.page-news .news-lead__figure {
  margin: 24px 0 0;
  border-radius: 2px;
}

.page-news .media-frame__img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
}

/* ============ 条目列表 ============ */
.page-news .news-stream {
  margin-bottom: clamp(32px, 5vw, 60px);
}

.page-news .news-stream .section__head p {
  max-width: 66ch;
  color: var(--warm);
}

.page-news .news-list {
  margin: clamp(18px, 3vw, 28px) 0 0;
  padding: 0;
  list-style: none;
}

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

.page-news .news-item__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
  margin-bottom: 8px;
  font-size: 12px;
}

.page-news .news-item__no {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--news-no);
}

.page-news .news-item__cat {
  padding: 3px 10px;
  border: 1px solid var(--news-line);
  border-radius: var(--pill);
  color: var(--warm);
  font-size: 12px;
}

.page-news .news-item__time {
  color: var(--gold);
  letter-spacing: 0.06em;
}

.page-news .news-item__title {
  margin: 0 0 8px;
  font-size: clamp(18px, 2.2vw, 22px);
  line-height: 1.4;
  font-weight: 700;
}

.page-news .news-item__excerpt {
  margin: 0;
  max-width: 68ch;
  color: var(--warm);
  line-height: 1.75;
}

.page-news .news-item__figure {
  margin: 16px 0 4px;
  max-width: min(100%, 460px);
  border-radius: 2px;
}

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

.page-news .news-item__more > summary,
.page-news .series-card__list > summary {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  list-style: none;
  cursor: pointer;
  padding: 4px 2px;
  font-size: 13px;
  color: var(--cyan);
  transition: color 0.18s var(--ease);
}

.page-news .news-item__more > summary::-webkit-details-marker,
.page-news .series-card__list > summary::-webkit-details-marker {
  display: none;
}

.page-news .news-item__more > summary::before,
.page-news .series-card__list > summary::before {
  content: "＋";
  font-family: var(--font-mono);
  font-size: 12px;
}

.page-news .news-item__more[open] > summary::before,
.page-news .series-card__list[open] > summary::before {
  content: "－";
}

.page-news .news-item__more > summary:hover {
  color: var(--paper);
}

.page-news .news-item__more p {
  margin: 6px 0 0;
  max-width: 68ch;
  color: var(--warm);
  line-height: 1.78;
  animation: news-fade 0.24s var(--ease) both;
}

@keyframes news-fade {
  from { opacity: 0; transform: translateY(-2px); }
  to { opacity: 1; transform: none; }
}

/* ============ 专题系列 ============ */
.page-news .news-series {
  padding-top: clamp(28px, 4vw, 44px);
  margin-bottom: clamp(32px, 5vw, 60px);
  border-top: 1px solid var(--news-line);
}

.page-news .news-series .section__head p {
  max-width: 66ch;
  color: var(--warm);
}

.page-news .news-series__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(16px, 2.4vw, 24px);
  margin-top: clamp(18px, 3vw, 28px);
}

.page-news .series-card {
  display: flex;
  flex-direction: column;
  padding: clamp(20px, 3vw, 30px);
  border: 1px solid var(--news-line);
  border-radius: 2px;
  background: linear-gradient(180deg, rgba(14, 23, 48, 0.72) 0%, rgba(7, 11, 24, 0.4) 100%);
}

.page-news .series-card__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 14px;
}

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

.page-news .series-card__title {
  margin: 0 0 10px;
  font-size: clamp(19px, 2.4vw, 24px);
  line-height: 1.35;
  font-weight: 700;
}

.page-news .series-card__text {
  margin: 0 0 18px;
  color: var(--warm);
  line-height: 1.75;
}

.page-news .series-meter {
  display: flex;
  gap: 4px;
  margin-bottom: 12px;
}

.page-news .series-meter i {
  flex: 1 1 0;
  height: 4px;
  border-radius: 2px;
  background: var(--grad-gold);
  opacity: 0.85;
}

.page-news .series-card__next {
  margin: 0 0 12px;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: rgba(90, 110, 163, 0.95);
}

.page-news .series-card__list ul {
  margin: 8px 0 0;
  padding-left: 18px;
  color: var(--warm);
  font-size: 14px;
  line-height: 1.85;
}

.page-news .series-card__foot {
  margin: auto 0 0;
  padding-top: 18px;
}

.page-news .series-card__foot .btn {
  padding: 10px 18px;
  font-size: 14px;
}

/* ============ 回看与订阅 ============ */
.page-news .news-back {
  padding-top: clamp(28px, 4vw, 44px);
  border-top: 1px solid var(--news-line);
}

.page-news .news-back__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 32px);
  margin-top: clamp(18px, 3vw, 28px);
}

.page-news .news-back__col {
  padding: clamp(20px, 3vw, 28px);
  border: 1px solid var(--news-line);
  border-radius: 2px;
  background: rgba(14, 23, 48, 0.55);
}

.page-news .news-back__title {
  margin: 0 0 10px;
  font-size: clamp(18px, 2.2vw, 21px);
  font-weight: 700;
}

.page-news .news-back__text {
  margin: 0 0 16px;
  max-width: 62ch;
  color: var(--warm);
  line-height: 1.78;
}

.page-news .news-back__col .copy-field {
  margin-bottom: 16px;
  padding: 12px 14px;
  border: 1px solid var(--news-line);
  border-radius: 2px;
  background: rgba(7, 11, 24, 0.6);
}

.page-news .news-back__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0;
}

.page-news .news-back__links .btn {
  padding: 10px 18px;
  font-size: 14px;
}

/* ============ 窄屏 ============ */
@media (max-width: 639px) {
  .page-news .news-hero__title {
    max-width: none;
  }

  .page-news .news-lead__stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px 12px;
  }

  .page-news .news-item__figure {
    max-width: 100%;
  }

  .page-news .news-back__links .btn {
    width: 100%;
    justify-content: center;
  }
}

/* ============ 桌面 ============ */
@media (min-width: 960px) {
  .page-news .news-layout {
    grid-template-columns: var(--news-rail-w) minmax(0, 1fr);
    gap: clamp(30px, 4vw, 64px);
    align-items: start;
  }

  .page-news .news-rail {
    position: sticky;
    top: calc(var(--header-h-scrolled) + 20px);
    padding-right: 8px;
  }

  .page-news .news-rail__list {
    flex-direction: column;
    gap: 2px;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-news .news-rail__item {
    justify-content: space-between;
    padding: 11px 12px 11px 16px;
    border: 0;
    border-left: 2px solid transparent;
    border-radius: 0;
    white-space: normal;
  }

  .page-news .news-rail__item:has(input:checked) {
    background: linear-gradient(90deg, rgba(217, 162, 74, 0.16), rgba(217, 162, 74, 0));
    border-left-color: var(--gold);
  }

  .page-news .news-rail__item:hover {
    border-left-color: rgba(217, 162, 74, 0.45);
  }

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

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

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

  /* 错位叠压：第二张专题卡轻微下沉，形成新旧并置的层级 */
  .page-news .news-series__grid > .series-card:nth-child(2) {
    margin-top: 22px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .news-item__more p {
    animation: none;
  }

  .page-news .news-rail__item {
    transition: none;
  }
}