/* ============ 数据观察 / page-news ============ */
.page-news {
  --news-rail: 256px;
  --news-line: rgba(169, 189, 212, .14);
  --news-line-strong: rgba(169, 189, 212, .26);
  --news-warm: linear-gradient(90deg, var(--flare), var(--amber));
  color: var(--mist-200);
  padding-bottom: clamp(56px, 9vw, 104px);
}

/* ---------- 面包屑 ---------- */
.page-news .breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  list-style: none;
  margin: 0;
  padding: clamp(14px, 2.4vw, 22px) 0 0;
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--steel-500);
}
.page-news .breadcrumb-item {
  display: inline-flex;
  align-items: center;
}
.page-news .breadcrumb-item + .breadcrumb-item::before {
  content: "/";
  margin: 0 8px;
  color: var(--steel-500);
}
.page-news .breadcrumb-item a {
  color: var(--mist-200);
  text-decoration: none;
  transition: color var(--t) var(--ease);
}
.page-news .breadcrumb-item a:hover,
.page-news .breadcrumb-item a:focus-visible {
  color: var(--neon);
}
.page-news .breadcrumb-item[aria-current="page"] {
  color: var(--cold-white);
}

/* ---------- 页首 ---------- */
.page-news .news-head {
  padding: clamp(22px, 5vw, 52px) 0 clamp(18px, 3vw, 34px);
  border-bottom: 1px solid var(--news-line);
}
.page-news .news-head .kicker {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  font-style: italic;
  letter-spacing: .22em;
  color: var(--neon);
  margin: 0;
}
.page-news .page-title {
  margin: 12px 0 0;
  font-size: clamp(32px, 6.4vw, 62px);
  font-weight: 300;
  letter-spacing: -.02em;
  line-height: 1.04;
  color: var(--cold-white);
}
.page-news .page-lede {
  max-width: 40em;
  margin: 18px 0 0;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.62;
  color: var(--mist-200);
}

/* ---------- 首屏氛围图 ---------- */
.page-news .news-hero {
  position: relative;
  margin: clamp(20px, 3vw, 36px) 0 0;
  border-radius: var(--radius-m);
  overflow: hidden;
  background: var(--ink-800);
}
.page-news .news-hero img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 7;
  object-fit: cover;
}
.page-news .news-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(6, 11, 26, 0) 42%, rgba(6, 11, 26, .74) 100%);
  pointer-events: none;
}

/* ---------- 两栏骨架 ---------- */
.page-news .news-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 44px);
  align-items: start;
  margin-top: clamp(28px, 5vw, 52px);
}
@media (min-width: 960px) {
  .page-news .news-split {
    grid-template-columns: var(--news-rail) minmax(0, 1fr);
  }
}

/* ---------- 左栏索引 ---------- */
.page-news .news-rail-inner {
  border-top: 1px solid var(--news-line-strong);
  padding-top: 16px;
}
@media (min-width: 960px) {
  .page-news .news-rail-inner {
    position: sticky;
    top: calc(var(--header-h) + 20px);
    border-top-color: var(--neon);
  }
}
.page-news .rail-title {
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--steel-500);
  margin: 0 0 12px;
  font-weight: 500;
}
.page-news .rail-title-gap {
  margin-top: 26px;
}
.page-news .news-taglist {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
  list-style: none;
  margin: 0 0 16px;
  padding: 0;
}
.page-news .news-tagitem {
  display: inline-flex;
  align-items: center;
  gap: 7px;
}
.page-news .news-count {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--steel-500);
  font-variant-numeric: tabular-nums;
}
.page-news .rail-meta {
  margin: 0;
  font-size: 12px;
  line-height: 1.6;
  color: var(--steel-500);
}
.page-news .rail-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 0;
  flex-direction: column;
}
.page-news .rail-link {
  display: block;
  padding: 6px 0;
  font-size: 14px;
  color: var(--mist-200);
  text-decoration: none;
  border-left: 2px solid transparent;
  padding-left: 10px;
  transition: color var(--t) var(--ease), border-color var(--t) var(--ease), background-color var(--t) var(--ease);
}
.page-news .rail-link:hover,
.page-news .rail-link:focus-visible,
.page-news .rail-link.is-active {
  color: var(--cold-white);
  border-left-color: var(--neon);
  background: rgba(27, 47, 92, .45);
}
@media (min-width: 960px) {
  .page-news .news-taglist {
    flex-direction: column;
    gap: 0;
    margin-bottom: 18px;
  }
  .page-news .news-tagitem {
    display: flex;
    justify-content: space-between;
    padding: 9px 0;
    border-bottom: 1px solid var(--news-line);
  }
}

/* ---------- 章节通用 ---------- */
.page-news .news-section {
  padding: clamp(36px, 6vw, 64px) 0 0;
}
.page-news .news-content > .news-section:nth-child(even) {
  padding-top: clamp(52px, 9vw, 104px);
}
.page-news .news-section .section-head {
  margin-bottom: clamp(20px, 3vw, 32px);
}
.page-news .news-section .section-index {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  font-style: italic;
  letter-spacing: .2em;
  color: var(--neon);
  margin-bottom: 8px;
}
.page-news .news-section .section-title {
  margin: 0;
  font-size: clamp(20px, 2.8vw, 30px);
  font-weight: 500;
  letter-spacing: -.01em;
  color: var(--cold-white);
}
.page-news .news-section .section-note {
  margin: 8px 0 0;
  max-width: 46em;
  font-size: 13px;
  line-height: 1.6;
  color: var(--steel-500);
}

/* ---------- 条目流 ---------- */
.page-news .entry-flow {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--news-line-strong);
}
.page-news .entry {
  position: relative;
  border-bottom: 1px solid var(--news-line);
  padding: clamp(18px, 3vw, 28px) 0 clamp(18px, 3vw, 28px) 0;
  transition: background-color var(--t) var(--ease), box-shadow var(--t) var(--ease);
}
.page-news .entry:hover,
.page-news .entry:focus-within {
  background: linear-gradient(90deg, rgba(75, 255, 158, .07), rgba(75, 255, 158, 0) 46%);
  box-shadow: inset 3px 0 0 0 var(--neon);
}
.page-news .entry-line {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 12px;
}
@media (min-width: 700px) {
  .page-news .entry-line {
    grid-template-columns: 56px minmax(0, 1fr);
    gap: 18px;
  }
}
.page-news .entry-no {
  font-family: var(--font-mono);
  font-size: 13px;
  font-variant-numeric: tabular-nums;
  color: var(--steel-500);
  padding-top: 5px;
  letter-spacing: .04em;
}
.page-news .entry:hover .entry-no {
  color: var(--neon);
}
.page-news .entry-top {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}
.page-news .entry-when {
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--steel-500);
}
.page-news .entry-title {
  margin: 8px 0 8px;
  font-size: clamp(18px, 2.6vw, 25px);
  font-weight: 500;
  line-height: 1.28;
  letter-spacing: -.01em;
  color: var(--cold-white);
}
.page-news .entry-sum {
  margin: 0 0 12px;
  max-width: 42em;
  font-size: 15px;
  line-height: 1.58;
  color: var(--mist-200);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ---------- 标签 ---------- */
.page-news .tag {
  display: inline-block;
  font-size: 11px;
  line-height: 1;
  letter-spacing: .1em;
  padding: 5px 9px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--news-line-strong);
  color: var(--steel-500);
  background: rgba(20, 34, 56, .6);
  white-space: nowrap;
}
.page-news .tag-neon {
  color: var(--neon);
  border-color: rgba(75, 255, 158, .42);
  background: rgba(75, 255, 158, .08);
}

/* ---------- 折叠 ---------- */
.page-news .accordion-trigger {
  appearance: none;
  background: transparent;
  border: 1px solid var(--news-line-strong);
  border-radius: var(--radius-pill);
  color: var(--mist-200);
  font-family: inherit;
  font-size: 12px;
  letter-spacing: .08em;
  padding: 6px 14px;
  cursor: pointer;
  transition: color var(--t) var(--ease), border-color var(--t) var(--ease), background-color var(--t) var(--ease);
}
.page-news .accordion-trigger:hover {
  color: var(--neon);
  border-color: var(--neon);
  background: rgba(75, 255, 158, .07);
}
.page-news .accordion-trigger:focus-visible {
  outline: 2px solid var(--neon);
  outline-offset: 2px;
}
.page-news .accordion-trigger[aria-expanded="true"] {
  color: var(--neon);
  border-color: var(--neon);
}
.page-news .accordion-panel {
  display: none;
  margin-top: 14px;
  padding-left: 14px;
  border-left: 1px solid var(--news-line-strong);
}
.page-news .accordion-panel[data-open] {
  display: block;
}
.page-news .accordion-panel p {
  margin: 0;
  max-width: 40em;
  font-size: 15px;
  line-height: 1.66;
  color: var(--mist-200);
}

/* ---------- 长期专题 ---------- */
.page-news .topic-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(18px, 3vw, 30px);
}
.page-news .topic-card {
  display: flex;
  flex-direction: column;
  background: var(--ink-800);
  border: 1px solid var(--news-line);
  border-radius: var(--radius-m);
  overflow: hidden;
  transition: border-color var(--t) var(--ease), transform var(--t) var(--ease);
}
.page-news .topic-card:hover {
  border-color: rgba(75, 255, 158, .38);
  transform: translateY(-2px);
}
.page-news .topic-media {
  margin: 0;
  background: var(--ink-700);
}
.page-news .topic-media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}
.page-news .topic-body {
  padding: clamp(16px, 2.4vw, 24px);
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 1;
}
.page-news .topic-kicker {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--amber);
  font-variant-numeric: tabular-nums;
}
.page-news .topic-title {
  margin: 0;
  font-size: clamp(18px, 2.2vw, 22px);
  font-weight: 500;
  color: var(--cold-white);
  letter-spacing: -.01em;
}
.page-news .topic-sum {
  margin: 0;
  font-size: 14px;
  line-height: 1.6;
  color: var(--mist-200);
}
.page-news .topic-link {
  margin-top: auto;
  align-self: flex-start;
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--neon);
  text-decoration: none;
  border-bottom: 1px solid rgba(75, 255, 158, .4);
  padding-bottom: 2px;
  transition: color var(--t) var(--ease), border-color var(--t) var(--ease);
}
.page-news .topic-link:hover,
.page-news .topic-link:focus-visible {
  color: var(--cold-white);
  border-color: var(--cold-white);
}
.page-news .topic-link:focus-visible {
  outline: 2px solid var(--neon);
  outline-offset: 3px;
}
@media (min-width: 900px) {
  .page-news .topic-grid {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    align-items: start;
  }
  .page-news .topic-card:nth-child(1) {
    grid-column: span 7;
  }
  .page-news .topic-card:nth-child(2) {
    grid-column: span 5;
  }
  .page-news .topic-card-wide {
    grid-column: span 12;
    flex-direction: row;
    align-items: stretch;
  }
  .page-news .topic-card-wide .topic-media {
    flex: 0 0 46%;
  }
  .page-news .topic-card-wide .topic-media img {
    height: 100%;
    aspect-ratio: auto;
  }
  .page-news .topic-card-wide .topic-body {
    justify-content: center;
  }
}

/* ---------- 口径变更时间轴 ---------- */
.page-news .timeline {
  list-style: none;
  margin: 0;
  padding: 0 0 0 4px;
  border-left: 1px solid var(--news-line-strong);
}
.page-news .timeline-item {
  position: relative;
  padding: 0 0 clamp(20px, 3vw, 34px) clamp(18px, 3vw, 30px);
}
.page-news .timeline-item:last-child {
  padding-bottom: 0;
}
.page-news .timeline-mark {
  position: absolute;
  left: -5px;
  top: 6px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--steel-500);
}
.page-news .timeline-item[data-state="current"] .timeline-mark {
  background: var(--neon);
  box-shadow: 0 0 0 4px rgba(75, 255, 158, .16);
}
.page-news .timeline-stamp {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--steel-500);
  font-variant-numeric: tabular-nums;
}
.page-news .timeline-item[data-state="current"] .timeline-stamp {
  color: var(--neon);
}
.page-news .timeline-body {
  margin: 8px 0 0;
  max-width: 40em;
  font-size: 15px;
  line-height: 1.66;
  color: var(--mist-200);
}

/* ---------- 反馈收口 ---------- */
.page-news .feedback-box {
  border: 1px solid var(--news-line);
  border-left: 3px solid var(--neon);
  border-radius: var(--radius-m);
  background: linear-gradient(160deg, rgba(27, 47, 92, .55), rgba(11, 20, 40, .25));
  padding: clamp(20px, 3vw, 34px);
}
.page-news .feedback-text {
  margin: 0;
  max-width: 40em;
  font-size: 15px;
  line-height: 1.66;
  color: var(--mist-200);
}
.page-news .feedback-line {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
  margin-top: 20px;
  padding-top: 18px;
  border-top: 1px solid var(--news-line);
}
.page-news .contact-key {
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--steel-500);
}
.page-news .contact-val {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--cold-white);
  word-break: break-all;
}
.page-news .copy-btn {
  appearance: none;
  background: transparent;
  border: 1px solid var(--news-line-strong);
  border-radius: var(--radius-pill);
  color: var(--mist-200);
  font-family: inherit;
  font-size: 12px;
  letter-spacing: .06em;
  padding: 6px 14px;
  cursor: pointer;
  transition: color var(--t) var(--ease), border-color var(--t) var(--ease), background-color var(--t) var(--ease);
}
.page-news .copy-btn:hover {
  color: var(--neon);
  border-color: var(--neon);
}
.page-news .copy-btn:focus-visible {
  outline: 2px solid var(--neon);
  outline-offset: 2px;
}
.page-news .copy-btn[data-copied] {
  color: var(--neon);
  border-color: var(--neon);
  background: rgba(75, 255, 158, .08);
}
.page-news .feedback-more {
  margin: 16px 0 0;
  font-size: 13px;
  color: var(--steel-500);
}
.page-news .feedback-more a {
  color: var(--mist-200);
  text-decoration: none;
  border-bottom: 1px solid var(--news-line-strong);
  transition: color var(--t) var(--ease), border-color var(--t) var(--ease);
}
.page-news .feedback-more a:hover,
.page-news .feedback-more a:focus-visible {
  color: var(--neon);
  border-color: var(--neon);
}

/* ---------- 进入视口淡入 ---------- */
.page-news .reveal {
  opacity: 0;
  transition: opacity 220ms var(--ease);
}
.page-news .reveal.is-visible {
  opacity: 1;
}
@media (prefers-reduced-motion: reduce) {
  .page-news .reveal {
    opacity: 1;
    transition: none;
  }
  .page-news .topic-card:hover {
    transform: none;
  }
}