.page-news {
  --news-rail: 22px;
  --news-card-bg: linear-gradient(180deg, rgba(18, 28, 51, .88), rgba(11, 18, 32, .9));
  --news-line: rgba(63, 224, 208, .5);
  display: block;
}

.page-news [data-section] {
  scroll-margin-top: 96px;
}

.page-news .news-context {
  padding-top: 22px;
  padding-bottom: 2px;
}

/* ---------- 索引头 ---------- */

.page-news .news-index {
  position: relative;
  padding: 30px 0 6px;
  overflow: hidden;
}

.page-news .news-index::before {
  content: "";
  position: absolute;
  left: -12%;
  right: -12%;
  top: -140px;
  height: 460px;
  transform: rotate(-8deg);
  background:
    radial-gradient(58% 78% at 76% 24%, rgba(63, 224, 208, .18), transparent 72%),
    radial-gradient(46% 66% at 14% 4%, rgba(255, 138, 61, .14), transparent 74%);
  pointer-events: none;
}

.page-news .news-index__inner {
  position: relative;
  display: grid;
  gap: 30px;
}

.page-news .news-index__title {
  margin: 12px 0 16px;
  font-size: clamp(2rem, 5.4vw, 3.5rem);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.015em;
  color: var(--paper);
}

.page-news .news-index__copy .lede {
  max-width: 46ch;
  color: var(--mist);
  font-size: 1.02rem;
  line-height: 1.78;
}

.page-news .news-index__facts {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  font-size: .93rem;
  color: var(--mist);
}

.page-news .news-index__facts li {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
}

.page-news .news-index__facts .mono {
  color: var(--cyan);
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: .02em;
}

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

.page-news .news-index__visual img {
  width: 100%;
  display: block;
}

/* ---------- 置顶专题 ---------- */

.page-news .news-pin {
  padding-top: 62px;
}

.page-news .news-pin__grid {
  display: grid;
  gap: 22px;
}

.page-news .news-pin__main {
  padding: 28px 24px;
}

.page-news .news-pin__lede {
  margin: 16px 0 14px;
  font-size: 1.1rem;
  line-height: 1.75;
  color: var(--paper);
}

.page-news .news-pin__main p {
  margin: 0 0 12px;
  color: var(--mist);
  font-size: .97rem;
  line-height: 1.78;
}

.page-news .news-pin__visual {
  margin: 22px 0 0;
}

.page-news .news-pin__visual img {
  width: 100%;
  display: block;
}

.page-news .news-pin__side {
  padding: 26px 22px;
  border: 1px solid var(--ink-600);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(27, 42, 74, .92), rgba(11, 18, 32, .92));
}

.page-news .news-pin__side-title {
  margin: 0 0 18px;
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: .02em;
  color: var(--paper);
}

.page-news .news-pin__points {
  list-style: none;
  margin: 0 0 22px;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-news .news-pin__points li {
  display: grid;
  grid-template-columns: 32px minmax(0, 1fr);
  gap: 10px;
}

.page-news .news-pin__points .mono {
  color: var(--amber);
  font-size: .92rem;
  font-weight: 700;
}

.page-news .news-pin__points strong {
  display: block;
  margin-bottom: 5px;
  color: var(--paper);
  font-size: .99rem;
  font-weight: 700;
}

.page-news .news-pin__points p {
  margin: 0;
  color: var(--mist);
  font-size: .91rem;
  line-height: 1.65;
}

.page-news .news-pin__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ---------- 条目筛选与列表 ---------- */

.page-news .news-stream-section {
  padding-top: 66px;
}

.page-news .news-filter {
  margin-top: 6px;
}

.page-news .news-filter__bar {
  display: flex;
  gap: 8px;
  padding: 6px 2px 20px;
  overflow-x: auto;
  scrollbar-width: thin;
  -webkit-overflow-scrolling: touch;
}

.page-news .news-filter__tab {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 16px;
  border: 1px solid var(--ink-600);
  border-radius: 999px;
  background: rgba(18, 28, 51, .72);
  color: var(--mist);
  font: inherit;
  font-size: .93rem;
  cursor: pointer;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease),
    background var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-news .news-filter__tab:hover {
  color: var(--paper);
  border-color: var(--cyan);
  transform: translateY(-2px);
}

.page-news .news-filter__tab .mono {
  color: var(--amber);
  font-size: .82rem;
}

.page-news .news-filter__tab.is-active,
.page-news .news-filter__tab[aria-selected="true"] {
  color: var(--ink-900);
  border-color: transparent;
  background: linear-gradient(100deg, var(--cyan-soft), var(--cyan));
}

.page-news .news-filter__tab.is-active .mono,
.page-news .news-filter__tab[aria-selected="true"] .mono {
  color: var(--ink-900);
}

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

.page-news .tab-panel {
  display: none;
}

.page-news .tab-panel.is-active {
  display: block;
}

.page-news .news-panel {
  position: relative;
  padding-left: var(--news-rail);
}

.page-news .news-panel::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 12px;
  bottom: 18px;
  width: 1px;
  background: linear-gradient(180deg, var(--news-line), rgba(63, 224, 208, .08) 86%, transparent);
}

.page-news .news-item {
  position: relative;
  padding: 18px 20px 18px 22px;
  margin-bottom: 18px;
  border: 1px solid var(--ink-600);
  border-radius: var(--radius);
  background: var(--news-card-bg);
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease),
    box-shadow var(--dur) var(--ease);
}

.page-news .news-item::before {
  content: "";
  position: absolute;
  left: calc(-1 * var(--news-rail));
  top: 22px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--ink-800);
  border: 2px solid var(--cyan);
  box-shadow: 0 0 0 4px rgba(63, 224, 208, .1);
}

.page-news .news-item:hover {
  transform: translateY(-3px);
  border-color: var(--cyan);
  box-shadow: -7px 11px 0 rgba(63, 224, 208, .07);
}

.page-news .news-item:focus-within {
  border-color: var(--cyan-soft);
}

.page-news .news-item__time {
  display: block;
  margin: 0 0 8px;
  color: var(--amber);
  font-size: .8rem;
  letter-spacing: .05em;
}

.page-news .news-item__title {
  margin: 0 0 8px;
  color: var(--paper);
  font-size: 1.15rem;
  font-weight: 700;
  line-height: 1.42;
}

.page-news .news-item__text {
  margin: 0;
  color: var(--mist);
  font-size: .95rem;
  line-height: 1.75;
}

.page-news .news-item__more {
  margin-top: 14px;
  padding-top: 11px;
  border-top: 1px dashed var(--ink-600);
}

.page-news .news-item__more summary {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--cyan);
  font-size: .89rem;
  cursor: pointer;
  list-style: none;
}

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

.page-news .news-item__more summary::after {
  content: "＋";
  font-size: .95rem;
}

.page-news .news-item__more[open] summary::after {
  content: "－";
}

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

.page-news .news-item__paths {
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-news .news-item__paths li {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  border: 1px solid var(--ink-600);
  border-left: 2px solid var(--cyan);
  border-radius: 6px;
  background: rgba(6, 10, 20, .62);
  font-size: .87rem;
}

.page-news .news-item__paths .mono {
  color: var(--paper);
  letter-spacing: .02em;
}

/* ---------- 版本节奏看板 ---------- */

.page-news .news-board {
  padding-top: 68px;
}

.page-news .news-board__grid {
  display: grid;
  gap: 22px;
}

.page-news .news-chart {
  padding: 26px 22px 22px;
}

.page-news .news-chart .panel__title {
  margin: 0 0 6px;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--paper);
}

.page-news .news-chart__svg {
  display: block;
  width: 100%;
  height: auto;
  margin-top: 8px;
}

.page-news .news-chart__svg .grid-line {
  stroke: rgba(169, 184, 208, .16);
  stroke-width: 1;
}

.page-news .news-chart__svg .bar {
  transition: opacity var(--dur) var(--ease);
}

.page-news .news-chart__svg .bar:hover {
  opacity: .7;
}

.page-news .news-chart__svg .axis-label {
  fill: var(--mist);
  font-family: var(--font-mono);
  font-size: 12px;
}

.page-news .news-chart__svg .value-label {
  fill: var(--amber);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
}

.page-news .news-chart__note {
  margin: 10px 0 0;
  color: var(--mist);
  font-size: .86rem;
  line-height: 1.6;
}

.page-news .news-board__visual img {
  width: 100%;
  display: block;
}

/* ---------- 回溯入口 ---------- */

.page-news .news-archive {
  padding-top: 68px;
  padding-bottom: 24px;
}

.page-news .news-archive__grid {
  display: grid;
  gap: 24px;
}

.page-news .news-archive__visual img {
  width: 100%;
  display: block;
}

.page-news .news-archive__cards {
  display: grid;
  gap: 14px;
}

.page-news .news-archive__card {
  display: block;
  padding: 20px 18px 22px;
  border: 1px solid var(--ink-600);
  border-radius: var(--radius);
  background: linear-gradient(160deg, rgba(27, 42, 74, .72), rgba(11, 18, 32, .92));
  color: inherit;
  text-decoration: none;
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-news .news-archive__card:hover,
.page-news .news-archive__card:focus-visible {
  transform: translateY(-3px);
  border-color: var(--cyan);
}

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

.page-news .news-archive__card-title {
  margin: 12px 0 8px;
  color: var(--paper);
  font-size: 1.08rem;
  font-weight: 700;
  line-height: 1.4;
}

.page-news .news-archive__card p {
  margin: 0 0 14px;
  color: var(--mist);
  font-size: .91rem;
  line-height: 1.7;
}

.page-news .news-archive__go {
  display: inline-block;
  color: var(--cyan);
  font-size: .89rem;
  font-weight: 600;
  letter-spacing: .02em;
}

/* ---------- 断点 ---------- */

@media (min-width: 640px) {
  .page-news {
    --news-rail: 30px;
  }

  .page-news .news-item {
    padding: 20px 24px 20px 26px;
  }

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

@media (min-width: 900px) {
  .page-news .news-index {
    padding-top: 46px;
  }

  .page-news .news-index__inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: center;
    gap: 46px;
  }

  .page-news .news-pin__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
    gap: 26px;
  }

  .page-news .news-panel .news-item:nth-child(even) {
    margin-left: 22px;
  }

  .page-news .news-board__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: center;
    gap: 32px;
  }

  .page-news .news-archive__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
    gap: 32px;
  }
}

@media (min-width: 1120px) {
  .page-news .news-pin__main {
    padding: 34px 32px;
  }

  .page-news .news-pin__side {
    padding: 30px 26px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .news-item,
  .page-news .news-filter__tab,
  .page-news .news-archive__card {
    transition: none;
  }

  .page-news .news-item:hover,
  .page-news .news-filter__tab:hover,
  .page-news .news-archive__card:hover {
    transform: none;
  }
}