/* ============================================================
   资讯中心 · 页面专属样式  (作用域 .page-news)
   ============================================================ */

.page-news {
  --n-line: rgba(166, 162, 192, 0.2);
  --n-line-soft: rgba(166, 162, 192, 0.1);
  --n-cyan: rgba(53, 240, 208, 0.38);
  --n-gap: clamp(20px, 3vw, 40px);
  background: var(--ink);
  color: var(--paper);
}

/* ------------------------------ 1. 首屏 ------------------------------ */

.page-news .news-hero {
  position: relative;
  padding: clamp(104px, 14vw, 168px) 0 clamp(46px, 6vw, 76px);
  overflow: hidden;
  border-bottom: 1px solid var(--n-line);
}

.page-news .news-hero__media {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.page-news .news-hero__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.55;
}

.page-news .news-hero__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(104deg, rgba(6, 7, 13, 0.95) 0%, rgba(6, 7, 13, 0.74) 46%, rgba(21, 14, 43, 0.88) 100%),
    linear-gradient(180deg, rgba(6, 7, 13, 0.18) 0%, rgba(6, 7, 13, 0.9) 74%, var(--ink) 100%);
}

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

.page-news .news-hero__title {
  margin: 16px 0 0;
  max-width: 12em;
  font-size: clamp(38px, 6.8vw, 88px);
  font-weight: 320;
  line-height: 1.05;
  letter-spacing: -0.03em;
  color: var(--paper);
}

.page-news .news-hero__lead {
  margin: 22px 0 0;
  max-width: 46ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--mute);
}

/* 置顶动态 */
.page-news .news-pin {
  position: relative;
  margin: clamp(30px, 4.4vw, 52px) 0 0;
  max-width: 840px;
  padding: 20px 22px;
  background: linear-gradient(118deg, rgba(21, 14, 43, 0.96) 0%, rgba(21, 14, 43, 0.7) 100%);
  border: 1px solid rgba(108, 59, 244, 0.44);
  border-left: 3px solid var(--violet);
  box-shadow: 0 0 12px rgba(108, 59, 244, 0.18);
}

.page-news .news-pin::after {
  content: "";
  position: absolute;
  top: -1px;
  right: -1px;
  width: 22px;
  height: 22px;
  border-top: 1px solid var(--cyan);
  border-right: 1px solid var(--cyan);
  pointer-events: none;
}

.page-news .news-pin__summary {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 14px;
  cursor: pointer;
  list-style: none;
}

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

.page-news .news-pin__summary::marker {
  content: "";
}

.page-news .news-pin__summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 6px;
}

.page-news .news-pin__flag {
  flex: none;
  padding: 3px 8px;
  border-radius: var(--radius);
  background: var(--cyan);
  color: var(--ink);
  font-size: 11px;
  letter-spacing: 0.18em;
}

.page-news .news-pin__headline {
  flex: 1 1 240px;
  font-size: clamp(17px, 2.1vw, 23px);
  font-weight: 600;
  line-height: 1.45;
  color: var(--paper);
}

.page-news .news-pin__time {
  flex: none;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--mute);
}

.page-news .news-pin__body {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--n-line-soft);
}

.page-news .news-pin__body p {
  margin: 0;
  max-width: 56ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mute);
}

.page-news .news-pin__body p + p {
  margin-top: 10px;
}

/* 分类快捷入口 */
.page-news .news-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 26px;
  margin: clamp(26px, 3.6vw, 42px) 0 0;
}

.page-news .news-chip {
  display: inline-block;
  padding: 4px 0;
  font-size: 14px;
  color: var(--mute);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: color 180ms ease, border-color 180ms ease;
}

.page-news .news-chip:hover,
.page-news .news-chip:focus-visible {
  color: var(--paper);
  border-bottom-color: var(--cyan);
}

.page-news .news-chip:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 4px;
}

/* ------------------------------ 2. 动态索引 ------------------------------ */

.page-news .news-index {
  padding: clamp(44px, 6vw, 82px) 0;
}

.page-news .news-index__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--n-gap);
}

/* 左侧分类 */
.page-news .news-rail {
  padding-top: 16px;
  border-top: 1px solid var(--n-line);
}

.page-news .news-rail__label {
  margin: 0 0 12px;
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--mute);
}

.page-news .news-rail__list {
  margin: 0;
  padding: 0;
}

.page-news .news-rail__list li + li {
  border-top: 1px solid var(--n-line-soft);
}

.page-news .news-rail__list a {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  padding: 11px 0;
  font-size: 14px;
  color: var(--mute);
  text-decoration: none;
  transition: color 180ms ease;
}

.page-news .news-rail__list a:hover,
.page-news .news-rail__list a:focus-visible {
  color: var(--cyan);
}

.page-news .news-rail__list a:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.page-news .news-rail__list .mono {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--blue);
}

.page-news .news-rail .note {
  margin: 18px 0 0;
}

/* 中间条目流 */
.page-news .news-board {
  min-width: 0;
}

.page-news .news-anchor {
  display: block;
  height: 0;
  overflow: hidden;
  scroll-margin-top: 110px;
}

.page-news .news-board .section-head {
  margin-bottom: 6px;
}

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

.page-news .news-item {
  display: grid;
  grid-template-columns: 54px minmax(0, 1fr);
  gap: 14px;
  padding: 18px 0;
  border-bottom: 1px solid var(--n-line-soft);
  transition: background 200ms ease;
}

.page-news .news-item:hover {
  background: linear-gradient(90deg, rgba(108, 59, 244, 0.1), transparent 62%);
}

.page-news .news-item__aside {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding-top: 3px;
}

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

.page-news .news-item__time {
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--mute);
}

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

.page-news .news-item__tag {
  display: inline-block;
  margin-bottom: 8px;
  padding: 2px 7px;
  border: 1px solid var(--n-cyan);
  border-radius: var(--radius);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--cyan);
}

.page-news .news-item__title {
  margin: 0;
  font-size: clamp(15px, 1.55vw, 18px);
  font-weight: 600;
  line-height: 1.55;
  color: var(--paper);
}

.page-news .news-item__summary {
  margin: 8px 0 0;
  max-width: 56ch;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mute);
}

/* 分类筛选：纯前端，靠 :target 切换 */
.page-news .news-anchor:target ~ .news-stream .news-item {
  display: none;
}

.page-news #f-all:target ~ .news-stream .news-item {
  display: grid;
}

.page-news #f-version:target ~ .news-stream .news-item--version {
  display: grid;
}

.page-news #f-structure:target ~ .news-stream .news-item--structure {
  display: grid;
}

.page-news #f-path:target ~ .news-stream .news-item--path {
  display: grid;
}

.page-news #f-series:target ~ .news-stream .news-item--series {
  display: grid;
}

/* 右侧回看 */
.page-news .news-side {
  padding-top: 16px;
  border-top: 1px solid var(--n-line);
}

.page-news .news-side__list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-news .news-side__list li + li {
  border-top: 1px solid var(--n-line-soft);
}

.page-news .news-side__list a {
  display: block;
  padding: 14px 0;
  color: inherit;
  text-decoration: none;
}

.page-news .news-side__list a:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.page-news .news-side__no {
  display: block;
  margin-bottom: 6px;
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--violet);
}

.page-news .news-side__title {
  display: block;
  font-size: 14px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--paper);
  transition: color 180ms ease;
}

.page-news .news-side__desc {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--mute);
}

.page-news .news-side__list a:hover .news-side__title,
.page-news .news-side__list a:focus-visible .news-side__title {
  color: var(--cyan);
}

.page-news .news-side .note {
  margin: 18px 0 0;
}

/* ------------------------------ 3. 深度栏目 ------------------------------ */

.page-news .news-deep {
  padding: clamp(48px, 6.4vw, 88px) 0;
  border-top: 1px solid var(--n-line);
}

.page-news .news-deep--version {
  background:
    radial-gradient(ellipse 70% 58% at 88% 0%, rgba(108, 59, 244, 0.17), transparent 70%),
    linear-gradient(180deg, rgba(21, 14, 43, 0.55), transparent 62%);
}

.page-news .news-deep--structure {
  background:
    radial-gradient(ellipse 58% 54% at 8% 100%, rgba(46, 124, 246, 0.14), transparent 70%);
}

.page-news .news-deep--path {
  background:
    radial-gradient(ellipse 62% 58% at 92% 88%, rgba(53, 240, 208, 0.1), transparent 70%);
}

.page-news .news-deep__head {
  max-width: 58ch;
  margin-bottom: clamp(26px, 3.6vw, 46px);
}

.page-news .news-deep__lead {
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mute);
}

.page-news .news-deep__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 52px);
}

.page-news .news-deep__note {
  margin: clamp(24px, 3.6vw, 40px) 0 0;
  padding-top: 18px;
  border-top: 1px solid var(--n-line-soft);
  max-width: 64ch;
  font-size: 14px;
  line-height: 1.85;
  color: var(--mute);
}

/* 版本步骤 */
.page-news .news-steps {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-news .news-step {
  display: grid;
  grid-template-columns: 84px minmax(0, 1fr);
  gap: 18px;
  padding: 20px 0;
  border-top: 1px solid var(--n-line-soft);
}

.page-news .news-step:first-child {
  border-top: 1px solid var(--n-line);
}

.page-news .news-step__no {
  font-size: 15px;
  letter-spacing: 0.06em;
  color: var(--blue);
}

.page-news .news-step__body h3 {
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--paper);
}

.page-news .news-step__body p {
  margin: 0;
  max-width: 48ch;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mute);
}

/* 结构变更条目 */
.page-news .news-changes {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-news .news-changes li {
  padding: 18px 0;
  border-top: 1px solid var(--n-line-soft);
}

.page-news .news-changes li:first-child {
  border-top: 1px solid var(--n-line);
}

.page-news .news-changes__tag {
  display: inline-block;
  margin-bottom: 8px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--cyan);
}

.page-news .news-changes p {
  margin: 0;
  max-width: 50ch;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mute);
}

/* 路径观察数字 */
.page-news .news-metrics {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  border: 1px solid var(--n-line);
  background: var(--n-line-soft);
}

.page-news .news-metric {
  padding: 22px 18px;
  background: var(--ink);
}

.page-news .news-metric__num {
  display: block;
  font-size: clamp(28px, 3.6vw, 40px);
  font-weight: 400;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-news .news-metric__unit {
  margin-left: 4px;
  font-size: 0.42em;
  letter-spacing: 0;
  color: var(--cyan);
}

.page-news .news-metric__label {
  display: block;
  margin-top: 12px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--mute);
}

/* 配图 */
.page-news .news-figure {
  margin: 0;
}

.page-news .news-figure__frame {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--n-line);
  background:
    radial-gradient(ellipse 80% 70% at 30% 14%, rgba(108, 59, 244, 0.22), transparent 72%),
    var(--ink-2);
}

.page-news .news-figure__frame img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-news .news-figure__cap {
  margin-top: 10px;
  font-size: 12px;
  line-height: 1.7;
  color: var(--mute);
}

/* ------------------------------ 4. 专题与系列 ------------------------------ */

.page-news .news-series {
  padding: clamp(48px, 6.4vw, 88px) 0;
  border-top: 1px solid var(--n-line);
  background: linear-gradient(180deg, rgba(21, 14, 43, 0.68), transparent 72%);
}

.page-news .news-series__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin-top: clamp(26px, 3.6vw, 46px);
  border: 1px solid var(--n-line);
  background: var(--n-line-soft);
}

.page-news .news-series__item {
  display: flex;
  flex-direction: column;
  padding: 24px 20px;
  background: var(--ink);
}

.page-news .news-series__no {
  margin: 0;
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--violet);
}

.page-news .news-series__item h3 {
  margin: 10px 0 0;
  font-size: 17px;
  font-weight: 600;
  line-height: 1.45;
  color: var(--paper);
}

.page-news .news-series__list {
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
  counter-reset: news-series;
}

.page-news .news-series__list li {
  position: relative;
  padding-left: 26px;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--mute);
  counter-increment: news-series;
}

.page-news .news-series__list li + li {
  margin-top: 12px;
}

.page-news .news-series__list li::before {
  content: counter(news-series, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--blue);
}

/* ------------------------------ 5. 回看与后续 ------------------------------ */

.page-news .news-recall {
  padding: clamp(48px, 6.4vw, 88px) 0 clamp(72px, 9vw, 128px);
}

.page-news .news-recall__panel {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 3.6vw, 48px);
  padding: clamp(26px, 3.6vw, 46px);
}

.page-news .news-recall__panel .section-title {
  color: var(--paper-ink);
}

.page-news .news-recall__panel .section-title::before {
  background: var(--violet);
  border-color: var(--violet);
}

.page-news .news-recall__panel .section-kicker {
  color: var(--violet);
}

.page-news .news-recall__panel p {
  margin: 14px 0 0;
  max-width: 52ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--paper-ink);
}

.page-news .news-recall__links {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 4px 22px;
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
}

.page-news .news-recall__links a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 8px 0;
  border-bottom: 1px solid var(--paper-2);
  font-size: 14px;
  color: var(--paper-ink);
  text-decoration: none;
  transition: color 180ms ease;
}

.page-news .news-recall__links a:hover,
.page-news .news-recall__links a:focus-visible {
  color: var(--violet);
}

.page-news .news-recall__links a:focus-visible {
  outline: 2px solid var(--violet);
  outline-offset: 3px;
}

.page-news .news-recall__links .mono {
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--violet);
}

.page-news .news-recall__side {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 16px;
}

.page-news .news-recall__side p {
  margin: 0;
}

.page-news .news-recall__alt {
  font-size: 13.5px !important;
  line-height: 1.8 !important;
}

.page-news .news-recall__alt a {
  color: var(--violet);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ============================ 响应式 ============================ */

@media (min-width: 560px) {
  .page-news .news-metrics {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 860px) {
  .page-news .news-deep__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    align-items: start;
  }

  .page-news .news-series__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-news .news-recall__panel {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  }
}

@media (min-width: 900px) {
  .page-news .news-index__inner {
    grid-template-columns: 176px minmax(0, 1fr) 232px;
    gap: clamp(28px, 3.4vw, 52px);
  }

  .page-news .news-rail,
  .page-news .news-side {
    position: sticky;
    top: 104px;
    align-self: start;
  }
}

@media (hover: hover) and (pointer: fine) and (min-width: 900px) {
  .page-news .news-item__summary {
    max-height: 0;
    margin-top: 0;
    opacity: 0;
    overflow: hidden;
    transition: max-height 260ms ease, margin-top 260ms ease, opacity 200ms ease;
  }

  .page-news .news-item:hover .news-item__summary,
  .page-news .news-item:focus-within .news-item__summary {
    max-height: 9em;
    margin-top: 8px;
    opacity: 1;
  }
}

@media (max-width: 559px) {
  .page-news .news-recall__links {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 420px) {
  .page-news .news-item {
    grid-template-columns: 40px minmax(0, 1fr);
    gap: 10px;
  }

  .page-news .news-step {
    grid-template-columns: 68px minmax(0, 1fr);
    gap: 14px;
  }

  .page-news .news-hero__title {
    font-size: clamp(32px, 9vw, 44px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .news-item,
  .page-news .news-chip,
  .page-news .news-rail__list a,
  .page-news .news-side__title,
  .page-news .news-recall__links a {
    transition: none;
  }

  .page-news .news-item__summary {
    max-height: none;
    opacity: 1;
    margin-top: 8px;
    transition: none;
  }
}