/* ===== 动态与变更说明 / page-news ===== */
.page-news {
  --news-hair: rgba(244, 247, 250, 0.14);
  --news-hair-ink: rgba(18, 26, 36, 0.14);
  --news-glass: rgba(244, 247, 250, 0.08);
  --news-card: #141c26;
  --news-ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --news-focus: 0 0 0 2px var(--abyss-950), 0 0 0 4px var(--electron-400);
}

.page-news .panel {
  padding-block: clamp(44px, 6vw, 92px);
}

.page-news .breadcrumb {
  margin-bottom: clamp(20px, 3vw, 34px);
}

.page-news h2 {
  font-size: clamp(26px, 4vw, 44px);
  line-height: 1.16;
  font-weight: 800;
  letter-spacing: -0.015em;
  margin: 0.25em 0 0.5em;
  max-width: 22ch;
}

.page-news h3 {
  margin: 0;
  font-size: clamp(17px, 2vw, 21px);
  line-height: 1.4;
  font-weight: 700;
}

.page-news .news-lede {
  margin: 0;
  font-size: 16px;
  line-height: 1.85;
  max-width: 64ch;
  color: var(--haze-400);
}

.page-news .panel--board .news-lede {
  color: var(--steel-600);
}

/* ---------- 首屏 ---------- */

.page-news .news-h1 {
  margin: 0.24em 0 0.5em;
  font-size: clamp(32px, 6vw, 74px);
  line-height: 1.06;
  font-weight: 900;
  letter-spacing: -0.02em;
  max-width: 18ch;
  color: var(--board-050);
}

.page-news .news-hero-lead {
  margin: 0;
  max-width: 56ch;
  font-size: 17px;
  line-height: 1.85;
  color: var(--haze-400);
}

.page-news .news-version-band {
  display: grid;
  gap: clamp(20px, 3vw, 36px);
  margin-top: clamp(30px, 4vw, 52px);
  padding-top: clamp(26px, 3vw, 42px);
  border-top: 1px solid var(--news-hair);
}

.page-news .news-version-left {
  display: flex;
  flex-direction: column;
  gap: 12px;
  border-left: 3px solid var(--signal-500);
  padding-left: clamp(14px, 2vw, 24px);
}

.page-news .news-version-no {
  font-family: var(--font-mono);
  font-size: clamp(46px, 10vw, 118px);
  line-height: 0.96;
  letter-spacing: -0.03em;
  font-weight: 700;
  color: var(--signal-500);
  overflow-wrap: anywhere;
}

@supports (-webkit-text-stroke: 3px transparent) {
  .page-news .news-version-no {
    color: transparent;
    -webkit-text-stroke: 3px var(--signal-500);
  }
}

.page-news .news-version-meta {
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--haze-400);
}

.page-news .news-version-sum {
  padding: clamp(20px, 3vw, 30px);
  display: flex;
  flex-direction: column;
  gap: 16px;
  border-radius: var(--radius);
}

.page-news .news-sum-title {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--haze-400);
}

.page-news .news-sum-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.page-news .news-sum-list li {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 14px;
  padding-top: 12px;
  border-top: 1px solid var(--news-hair);
  font-size: 15px;
  line-height: 1.75;
  color: var(--board-050);
}

.page-news .news-sum-list li:first-child {
  padding-top: 0;
  border-top: 0;
}

.page-news .news-sum-k {
  flex: 0 0 auto;
  min-width: 5em;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--haze-400);
}

.page-news .news-version-sum .btn {
  align-self: flex-start;
}

.page-news .news-hero-figure {
  margin: clamp(30px, 4vw, 50px) 0 0;
}

.page-news .news-hero-figure img {
  border-radius: var(--radius);
}

/* ---------- 类别索引 ---------- */

.page-news .news-filter {
  position: sticky;
  top: var(--bar-h);
  z-index: 5;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: clamp(20px, 3vw, 30px) 0 clamp(24px, 3vw, 38px);
  padding: 12px 0;
  background: var(--graphite-900);
  border-bottom: 1px solid var(--news-hair);
}

.page-news .news-chip {
  display: inline-flex;
  align-items: center;
  padding: 8px 16px;
  border: 1px solid var(--news-hair);
  border-radius: 999px;
  font-size: 14px;
  line-height: 1.4;
  white-space: nowrap;
  color: var(--haze-400);
  text-decoration: none;
  transition: color var(--t-base) var(--news-ease),
    border-color var(--t-base) var(--news-ease),
    background var(--t-base) var(--news-ease);
}

.page-news .news-chip:hover {
  color: var(--board-050);
  border-color: var(--electron-400);
  background: var(--news-glass);
}

.page-news .news-chip:focus-visible {
  outline: none;
  box-shadow: var(--news-focus);
}

.page-news .news-cat-body {
  display: grid;
  gap: clamp(24px, 3vw, 40px);
}

.page-news .news-cat-grid {
  display: grid;
  gap: 1px;
  background: var(--news-hair);
  border: 1px solid var(--news-hair);
}

.page-news .news-cat-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: clamp(20px, 2.6vw, 30px);
  background: var(--news-card);
  scroll-margin-top: calc(var(--bar-h) + 96px);
  transition: background var(--t-base) var(--news-ease);
}

.page-news .news-cat-card:hover {
  background: var(--route-700);
}

.page-news .news-cat-tag {
  margin: 0;
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--signal-500);
}

.page-news .news-cat-card h3 {
  color: var(--board-050);
}

.page-news .news-cat-card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--haze-400);
}

.page-news .news-cat-who {
  padding-top: 10px;
  border-top: 1px solid var(--news-hair);
  font-size: 14px !important;
  color: var(--electron-400) !important;
}

.page-news .news-cat-figure {
  margin: 0;
}

.page-news .news-cat-figure img {
  border-radius: var(--radius);
}

/* ---------- 版本时间轴 ---------- */

.page-news .news-timeline {
  position: relative;
  list-style: none;
  margin: clamp(28px, 4vw, 48px) 0 0;
  padding: 0;
}

.page-news .news-timeline::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 18px;
  bottom: 18px;
  width: 1px;
  background: linear-gradient(180deg, var(--electron-400), rgba(34, 211, 208, 0.05));
  opacity: 0.55;
}

.page-news .news-tl-item {
  position: relative;
  padding-left: clamp(26px, 4vw, 40px);
  padding-bottom: clamp(14px, 2vw, 22px);
}

.page-news .news-tl-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 18px;
  width: 11px;
  height: 11px;
  box-sizing: border-box;
  border-radius: 50%;
  background: var(--abyss-950);
  border: 1px solid var(--electron-400);
  transition: transform var(--t-base) var(--news-ease);
}

.page-news .news-tl-item.is-current::before {
  background: var(--signal-500);
  border-color: var(--signal-500);
  transform: scale(1.25);
  box-shadow: 0 0 0 4px rgba(255, 90, 31, 0.16);
}

.page-news .news-tl-item > details {
  border-radius: var(--radius);
}

.page-news .news-tl-item summary {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 16px;
  padding: 14px 16px;
  cursor: pointer;
  list-style: none;
  border-radius: var(--radius);
  transition: background var(--t-base) var(--news-ease);
}

.page-news .news-tl-item summary::-webkit-details-marker {
  display: none;
}

.page-news .news-tl-item summary::marker {
  content: "";
}

.page-news .news-tl-item summary:hover {
  background: var(--news-glass);
}

.page-news .news-tl-item summary:focus-visible {
  outline: none;
  box-shadow: var(--news-focus);
}

.page-news .news-tl-item details[open] > summary {
  background: var(--news-glass);
  border-bottom: 1px solid var(--news-hair);
  border-radius: var(--radius) var(--radius) 0 0;
}

.page-news .news-tl-ver {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--signal-500);
}

.page-news .news-tl-head {
  flex: 1 1 12ch;
  min-width: 0;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--board-050);
}

.page-news .news-tl-when {
  margin-left: auto;
  font-size: 12px;
  letter-spacing: 0.08em;
  white-space: nowrap;
  color: var(--haze-400);
}

.page-news .news-tl-body {
  padding: 16px;
  display: grid;
  gap: 14px;
}

.page-news .news-tl-body dl {
  margin: 0;
  display: grid;
  gap: 10px;
}

.page-news .news-tl-body dt {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--haze-400);
}

.page-news .news-tl-body dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--board-050);
}

.page-news .news-tl-link {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--haze-400);
}

.page-news .news-tl-link a {
  color: var(--electron-400);
}

/* ---------- 观察文章列表 ---------- */

.page-news .news-observe-figure {
  margin: clamp(24px, 3vw, 40px) 0 0;
}

.page-news .news-observe-figure img {
  border-radius: var(--radius);
}

.page-news .news-posts {
  display: grid;
  margin-top: clamp(24px, 3vw, 40px);
  border-top: 1px solid var(--news-hair-ink);
}

.page-news .news-post {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 20px 0;
  border-bottom: 1px solid var(--news-hair-ink);
  transition: transform var(--t-base) var(--news-ease),
    border-color var(--t-base) var(--news-ease);
}

.page-news .news-post:hover {
  transform: translateY(-2px);
  border-bottom-color: var(--signal-500);
}

.page-news .news-post:last-child {
  border-bottom: 1px solid var(--news-hair-ink);
}

.page-news .news-post-meta {
  margin: 0;
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--signal-500);
}

.page-news .news-post h3 {
  color: var(--ink-800);
}

.page-news .news-post p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--steel-600);
}

/* ---------- 专题系列 ---------- */

.page-news .news-series-grid {
  display: grid;
  gap: clamp(24px, 3vw, 40px);
  margin-top: clamp(24px, 3vw, 40px);
}

.page-news .news-series-figure {
  margin: 0;
}

.page-news .news-series-figure img {
  border-radius: var(--radius);
}

.page-news .news-series-list {
  display: grid;
  gap: 1px;
  background: var(--news-hair);
  border: 1px solid var(--news-hair);
}

.page-news .news-series-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: clamp(18px, 2.4vw, 28px);
  background: var(--abyss-950);
  transition: background var(--t-base) var(--news-ease);
}

.page-news .news-series-card:hover {
  background: var(--graphite-900);
}

.page-news .news-series-no {
  margin: 0;
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--electron-400);
}

.page-news .news-series-card h3 {
  color: var(--board-050);
}

.page-news .news-series-card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--haze-400);
}

/* ---------- 更新节奏 ---------- */

.page-news .news-cadence-grid {
  display: grid;
  gap: clamp(24px, 3vw, 36px);
  margin-top: clamp(24px, 3vw, 40px);
}

.page-news .news-cadence-card {
  padding-top: clamp(16px, 2vw, 22px);
  border-top: 2px solid var(--signal-500);
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.page-news .news-cadence-card h3 {
  color: var(--board-050);
}

.page-news .news-cadence-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.page-news .news-cadence-list li {
  position: relative;
  padding-left: 16px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--haze-400);
}

.page-news .news-cadence-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 6px;
  height: 1px;
  background: var(--electron-400);
}

.page-news .news-cadence-list a {
  color: var(--electron-400);
}

/* ---------- 响应式 ---------- */

@media (min-width: 700px) {
  .page-news .news-tl-body dl {
    grid-template-columns: 7.5em minmax(0, 1fr);
    gap: 10px 20px;
    align-items: baseline;
  }

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

@media (min-width: 760px) {
  .page-news .news-posts {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: clamp(24px, 4vw, 64px);
  }

  .page-news .news-post {
    padding: 22px 0;
  }
}

@media (min-width: 900px) {
  .page-news .news-filter {
    top: 0;
  }

  .page-news .news-version-band {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
    gap: clamp(32px, 4vw, 56px);
    align-items: start;
  }

  .page-news .news-cat-body {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-news .news-cat-figure {
    position: sticky;
    top: calc(var(--bar-h) + 96px);
  }

  .page-news .news-series-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr);
    align-items: start;
  }

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

@media (min-width: 1200px) {
  .page-news .news-cat-grid {
    gap: 1px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .news-post:hover {
    transform: none;
  }

  .page-news .news-tl-item.is-current::before {
    transform: none;
  }
}
<<<END>>>