/* =========================================================
   动态与公告 /news/
   作用域：.page-news
   ========================================================= */

.page-news {
  --news-rule: 1px solid var(--c-grid);
  --news-gap: clamp(26px, 3.6vw, 44px);
  padding-bottom: clamp(40px, 7vw, 88px);
}

.page-news .section-title {
  margin: 0;
  font-size: clamp(22px, 3.2vw, 34px);
  font-weight: 900;
  line-height: 1.25;
  letter-spacing: -.01em;
  color: var(--c-text);
}

.page-news .media-frame {
  margin: 0;
  overflow: hidden;
}

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

/* ---------- 首屏 ---------- */

.page-news .news-hero {
  position: relative;
  border-bottom: var(--news-rule);
  background:
    radial-gradient(115% 125% at 88% -12%, rgba(122, 92, 255, .18), transparent 62%),
    linear-gradient(180deg, rgba(39, 230, 214, .06), transparent 58%);
}

.page-news .news-hero__inner {
  display: grid;
  gap: clamp(26px, 4vw, 52px);
  align-items: center;
  padding-block: clamp(30px, 5.5vw, 70px) clamp(34px, 6vw, 80px);
}

.page-news .news-hero__title {
  margin: 14px 0 0;
  font-size: clamp(30px, 5.2vw, 58px);
  font-weight: 900;
  line-height: 1.14;
  letter-spacing: -.015em;
  color: var(--c-text);
}

.page-news .news-hero__title em {
  font-style: normal;
  color: var(--c-cyan);
}

.page-news .news-hero__copy .lede {
  margin-top: 18px;
}

.page-news .news-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 3vw, 32px);
}

.page-news .news-hero__media {
  border: var(--news-rule);
  aspect-ratio: 16 / 7;
  background: var(--c-panel);
}

.page-news .news-hero__media img {
  height: 100%;
}

/* ---------- 概览数据带 ---------- */

.page-news .news-metrics {
  padding-block: clamp(22px, 3.4vw, 38px);
  border-bottom: var(--news-rule);
  background: var(--c-panel);
}

/* ---------- 条目流 ---------- */

.page-news .news-stream__head {
  margin-bottom: clamp(24px, 3.4vw, 40px);
}

.page-news .news-stream__head .lede {
  margin-top: 14px;
}

.page-news .news-layout {
  display: block;
}

.page-news .news-side {
  margin-bottom: clamp(24px, 3.4vw, 40px);
}

.page-news .news-side__note {
  margin: 14px 0 0;
  font-size: 12px;
  letter-spacing: .05em;
  color: var(--c-dim);
}

.page-news .topic-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-news .topic-tab {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 14px;
  border: var(--news-rule);
  background: transparent;
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--c-dim);
  text-decoration: none;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-news .topic-tab::before {
  content: "";
  width: 6px;
  height: 6px;
  background: currentColor;
}

.page-news .topic-tab:hover,
.page-news .topic-tab:focus-visible {
  color: var(--c-text);
  border-color: var(--c-text);
  background: var(--c-panel);
}

.page-news .topic-tab--all::before { background: var(--c-text); }
.page-news .topic-tab--cyan::before { background: var(--c-cyan); }
.page-news .topic-tab--violet::before { background: var(--c-violet); }
.page-news .topic-tab--orange::before { background: var(--c-orange); }
.page-news .topic-tab--green::before { background: var(--c-green); }

.page-news .news-flow > * + * {
  margin-top: var(--news-gap);
}

.page-news .entry-group__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding-bottom: 12px;
  border-bottom: var(--news-rule);
}

.page-news .entry-group__title {
  margin: 0;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .16em;
  color: var(--c-text);
}

.page-news .entry-group__meta {
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--c-dim);
}

.page-news .entry-list {
  border-bottom: var(--news-rule);
}

.page-news .entry {
  border-top: var(--news-rule);
  background: transparent;
  transition: background var(--dur) var(--ease);
}

.page-news .entry:first-child {
  border-top: 0;
}

.page-news .entry > summary {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 16px;
  padding: clamp(16px, 2.3vw, 22px) 6px;
  cursor: pointer;
  list-style: none;
  transition: background var(--dur) var(--ease);
}

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

.page-news .entry > summary:focus-visible {
  outline: 2px solid var(--c-cyan);
  outline-offset: 2px;
}

.page-news .entry:hover > summary,
.page-news .entry[open] > summary {
  background: linear-gradient(90deg, rgba(39, 230, 214, .07), transparent 72%);
}

.page-news .entry__idx {
  flex: 0 0 auto;
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--c-cyan);
}

.page-news .entry__title {
  flex: 1 1 240px;
  font-size: clamp(16px, 1.5vw, 19px);
  font-weight: 700;
  line-height: 1.5;
  color: var(--c-text);
  transition: color var(--dur) var(--ease);
}

.page-news .entry:hover .entry__title,
.page-news .entry[open] .entry__title {
  color: var(--c-cyan);
}

.page-news .entry__time {
  flex: 0 0 auto;
  font-size: 12px;
  letter-spacing: .07em;
  color: var(--c-dim);
}

.page-news .entry__body {
  max-width: 68ch;
  margin: 0 6px 0 0;
  padding: 0 0 clamp(18px, 2.6vw, 26px) 18px;
  border-left: 1px solid var(--c-grid);
  font-size: 15px;
  line-height: 1.85;
  color: var(--c-dim);
}

.page-news .entry__body p {
  margin: 0 0 10px;
}

.page-news .entry__body p:last-child {
  margin-bottom: 0;
}

/* ---------- 版本矩阵插图 ---------- */

.page-news .news-spot__frame {
  border: var(--news-rule);
  aspect-ratio: 10 / 7;
  background: var(--c-panel);
}

.page-news .news-spot__frame img {
  height: 100%;
}

.page-news .news-spot .media-cap {
  margin-top: 10px;
}

/* ---------- 专题系列 ---------- */

.page-news .news-topics__head .lede {
  margin-top: 14px;
}

.page-news .topic-strip {
  display: grid;
  gap: 1px;
  margin-top: clamp(22px, 3.4vw, 38px);
  background: var(--c-grid);
  border: var(--news-rule);
}

.page-news .topic-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: clamp(18px, 2.4vw, 28px);
  background: var(--c-panel);
  transition: background var(--dur) var(--ease);
}

.page-news .topic-card:hover {
  background: var(--c-panel-2);
}

.page-news .topic-card__media {
  aspect-ratio: 16 / 9;
  border: var(--news-rule);
  background: var(--c-bg);
}

.page-news .topic-card__media img {
  height: 100%;
}

.page-news .topic-card__title {
  margin: 6px 0 0;
  font-size: clamp(17px, 1.8vw, 20px);
  font-weight: 700;
  color: var(--c-text);
}

.page-news .topic-card__count {
  margin: 0;
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--c-violet);
}

.page-news .topic-card__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--c-dim);
}

.page-news .topic-card__link {
  margin-top: auto;
  padding-top: 12px;
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--c-cyan);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  align-self: flex-start;
}

.page-news .topic-card__link:hover,
.page-news .topic-card__link:focus-visible {
  border-bottom-color: var(--c-cyan);
}

/* ---------- 更新节奏 ---------- */

.page-news .rhythm-grid {
  display: grid;
  gap: clamp(28px, 4vw, 56px);
  align-items: center;
}

.page-news .rhythm-copy p {
  margin: 16px 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--c-dim);
}

.page-news .rhythm-copy .btn {
  margin-top: 24px;
}

.page-news .rhythm-scale {
  position: relative;
  height: 92px;
  border-top: var(--news-rule);
  background-image: repeating-linear-gradient(
    90deg,
    var(--c-grid) 0,
    var(--c-grid) 1px,
    transparent 1px,
    transparent 26px
  );
  background-repeat: repeat-x;
  background-position: left bottom;
  background-size: auto 32px;
}

.page-news .rhythm-node {
  position: absolute;
  bottom: 0;
  width: 2px;
  height: 34px;
}

.page-news .rhythm-node:nth-child(1) { left: 14%; background: var(--c-cyan); }
.page-news .rhythm-node:nth-child(2) { left: 38%; height: 52px; background: var(--c-orange); }
.page-news .rhythm-node:nth-child(3) { left: 63%; height: 44px; background: var(--c-violet); }
.page-news .rhythm-node:nth-child(4) { left: 88%; background: var(--c-cyan); }

.page-news .rhythm-legend {
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
  font-size: 13px;
  color: var(--c-dim);
}

.page-news .rhythm-legend li {
  display: flex;
  align-items: center;
  gap: 10px;
}

.page-news .rhythm-dot {
  flex: 0 0 auto;
  width: 8px;
  height: 8px;
}

.page-news .rhythm-dot--cyan { background: var(--c-cyan); }
.page-news .rhythm-dot--orange { background: var(--c-orange); }
.page-news .rhythm-dot--violet { background: var(--c-violet); }

/* ---------- 公告归档 ---------- */

.page-news .archive-grid {
  display: grid;
  gap: clamp(26px, 4vw, 48px);
  align-items: start;
}

.page-news .archive-copy p {
  margin: 16px 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--c-dim);
  max-width: 62ch;
}

.page-news .archive-list {
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
  border-top: var(--news-rule);
}

.page-news .archive-list li {
  display: flex;
  gap: 14px;
  padding: 14px 0;
  border-bottom: var(--news-rule);
  font-size: 14px;
  line-height: 1.7;
  color: var(--c-dim);
}

.page-news .archive-list__idx {
  flex: 0 0 auto;
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--c-orange);
  padding-top: 3px;
}

.page-news .archive-media__frame {
  border: var(--news-rule);
  aspect-ratio: 2 / 1;
  background: var(--c-panel);
}

.page-news .archive-media__frame img {
  height: 100%;
}

.page-news .archive-media .media-cap {
  margin-top: 10px;
}

/* ---------- 行动入口 ---------- */

.page-news .news-cta {
  border-top: var(--news-rule);
}

.page-news .news-cta__inner {
  display: grid;
  gap: clamp(22px, 3vw, 36px);
  align-items: end;
  padding: clamp(30px, 5vw, 56px) 0 0;
  border-top: 2px solid var(--c-cyan);
}

.page-news .news-cta__title {
  margin: 0;
  font-size: clamp(22px, 3vw, 32px);
  font-weight: 900;
  line-height: 1.3;
  color: var(--c-text);
}

.page-news .news-cta__copy p {
  margin: 14px 0 0;
  max-width: 60ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--c-dim);
}

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

/* ---------- 响应式 ---------- */

@media (min-width: 720px) {
  .page-news .news-hero__media {
    aspect-ratio: 8 / 3;
  }

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

  .page-news .rhythm-legend {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
  }

  .page-news .news-cta__inner {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
  }

  .page-news .news-cta__actions {
    justify-content: flex-end;
  }
}

@media (min-width: 900px) {
  .page-news .news-hero__inner {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.02fr);
  }

  .page-news .rhythm-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
  }

  .page-news .archive-grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
  }
}

@media (min-width: 1040px) {
  .page-news .news-layout {
    display: grid;
    grid-template-columns: 244px minmax(0, 1fr);
    gap: clamp(28px, 4vw, 56px);
    align-items: start;
  }

  .page-news .news-side {
    position: sticky;
    top: calc(var(--header-h) + 24px);
    margin-bottom: 0;
  }

  .page-news .news-side .topic-tabs {
    flex-direction: column;
    align-items: stretch;
  }

  .page-news .news-side .topic-tab {
    justify-content: flex-start;
  }

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

@media (max-width: 480px) {
  .page-news .entry > summary {
    gap: 4px 12px;
  }

  .page-news .entry__title {
    flex: 1 1 100%;
    order: 3;
  }

  .page-news .entry__time {
    margin-left: auto;
  }

  .page-news .entry__body {
    padding-left: 12px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .entry,
  .page-news .entry__title,
  .page-news .topic-tab,
  .page-news .topic-card {
    transition: none;
  }
}