.page-news {
  --news-gap: clamp(1rem, 2vw, 1.6rem);
  --rail-w: 15.5rem;
}

.page-news .breadcrumbs {
  padding-top: clamp(1.2rem, 3vw, 2rem);
}

.page-news .news-hero {
  position: relative;
  padding-block: clamp(1.6rem, 5vw, 3.2rem) clamp(2rem, 5vw, 3.4rem);
  border-bottom: var(--line-w, 2px) solid var(--line);
  background:
    radial-gradient(120% 90% at 85% 0%, rgba(43, 231, 208, .14), transparent 62%),
    linear-gradient(165deg, var(--ink-1), var(--ink-0) 68%);
}

.page-news .news-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  height: 3px;
  background: linear-gradient(90deg, var(--cyan) 0%, var(--cyan) 18%, transparent 18%, transparent 100%);
}

.page-news .news-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 5vw, 3.4rem);
  line-height: 1.08;
  letter-spacing: -.01em;
  margin: .5rem 0 0;
  max-width: 24ch;
  color: var(--white);
}

.page-news .news-hero .lede {
  margin-top: clamp(.8rem, 2vw, 1.2rem);
  max-width: 60ch;
}

.page-news .news-facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2px;
  margin: clamp(1.4rem, 3vw, 2.4rem) 0 0;
  border: var(--line-w, 2px) solid var(--line);
  background: var(--line);
  box-shadow: var(--shadow-hard);
}

.page-news .news-facts > div {
  background: var(--ink-2);
  padding: .85rem 1rem;
  min-width: 0;
}

.page-news .news-facts dt {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .12em;
  color: var(--mist);
  text-transform: uppercase;
}

.page-news .news-facts dd {
  margin: .35rem 0 0;
  font-family: var(--font-mono);
  font-size: clamp(1.05rem, 2.4vw, 1.4rem);
  color: var(--cyan);
  letter-spacing: -.01em;
}

.page-news .news-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.6rem, 4vw, 2.6rem);
  padding-block: clamp(2rem, 5vw, 3.5rem);
  align-items: start;
}

/* 左侧固定栏目索引 */
.page-news .news-rail {
  display: flex;
  flex-direction: column;
  gap: .85rem;
  min-width: 0;
}

.page-news .rail-label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-news .rail-list {
  list-style: none;
  margin: 0;
  padding: 0 0 .4rem;
  display: flex;
  gap: .5rem;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-news .rail-list li {
  flex: 0 0 auto;
}

.page-news .rail-list a {
  display: flex;
  align-items: center;
  gap: .5rem;
  padding: .55rem .85rem;
  border: var(--line-w, 2px) solid var(--line);
  background: var(--ink-2);
  color: var(--white);
  text-decoration: none;
  font-size: .88rem;
  white-space: nowrap;
  transition: color .22s ease, border-color .22s ease, box-shadow .22s ease;
}

.page-news .rail-list a .mono {
  color: var(--cyan);
  font-size: .78rem;
}

.page-news .rail-list a:hover,
.page-news .rail-list a:focus-visible {
  border-color: var(--cyan);
  color: var(--cyan-soft);
}

.page-news .rail-list a[data-active] {
  border-color: var(--cyan);
  background: var(--ink-1);
  color: var(--white);
  box-shadow: inset 4px 0 0 0 var(--cyan);
}

.page-news .rail-fav {
  align-self: flex-start;
  white-space: nowrap;
}

.page-news .rail-fav[aria-pressed="true"] {
  border-color: var(--orange);
  color: var(--orange);
  box-shadow: inset 0 0 0 2px var(--orange);
}

.page-news .rail-note {
  margin: .2rem 0 0;
  font-size: .82rem;
  line-height: 1.65;
  color: var(--mist);
  max-width: 24ch;
}

.page-news .rail-note a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(43, 231, 208, .5);
}

/* 章节与条目流 */
.page-news .news-stream {
  min-width: 0;
  display: flex;
  flex-direction: column;
}
.page-news .news-block {
  padding-block: clamp(1.8rem, 4vw, 2.6rem);
  border-top: var(--line-w, 2px) solid var(--line);
  scroll-margin-top: 6.5rem;
}

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

.page-news .news-head {
  margin-bottom: clamp(1.2rem, 3vw, 2rem);
}

.page-news .news-head .chapter-index {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 8vw, 5.5rem);
  line-height: .85;
  color: transparent;
  -webkit-text-stroke: 2px var(--line);
  margin-bottom: .4rem;
}

.page-news .news-head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 3.2vw, 2.1rem);
  line-height: 1.16;
  letter-spacing: -.01em;
  color: var(--white);
}

.page-news .news-sub {
  margin: .6rem 0 0;
  max-width: 52ch;
  color: var(--mist);
  font-size: .95rem;
  line-height: 1.75;
}

.page-news .news-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--news-gap);
  min-width: 0;
}

.page-news .news-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: .7rem;
  min-width: 0;
  padding: clamp(1rem, 2.2vw, 1.5rem);
  background: var(--ink-2);
  border: var(--line-w, 2px) solid var(--line);
  box-shadow: var(--shadow-hard);
  transition: transform .24s ease, border-color .24s ease, box-shadow .24s ease;
}

.page-news .news-card:hover {
  border-color: var(--cyan);
  transform: translate(-3px, -3px);
}

.page-news .news-seq {
  display: inline-block;
  font-size: .76rem;
  letter-spacing: .1em;
  color: var(--cyan);
}

.page-news .news-card h3,
.page-news .version-item h3,
.page-news .follow-block h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.05rem, 2.3vw, 1.4rem);
  line-height: 1.25;
  color: var(--white);
}

.page-news .news-card-text {
  margin: 0;
  font-size: .92rem;
  line-height: 1.75;
  color: var(--white);
}

.page-news .news-points {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .35rem;
  font-size: .88rem;
  line-height: 1.6;
  color: var(--mist);
}

.page-news .news-points li {
  padding-left: 1rem;
  position: relative;
}

.page-news .news-points li::before {
  content: "›";
  position: absolute;
  left: 0;
  color: var(--cyan);
}

.page-news .news-card details {
  border-top: 1px solid var(--line);
  padding-top: .65rem;
  margin-top: auto;
}

.page-news .news-card summary {
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .06em;
  color: var(--cyan);
}

.page-news .news-card summary:hover {
  color: var(--cyan-soft);
}

.page-news .news-card details p {
  margin: .7rem 0 0;
  font-size: .9rem;
  line-height: 1.75;
  color: var(--mist);
}

/* 首条大卡：宽窄对比 */
.page-news .news-card--lead {
  grid-column: 1 / -1;
  gap: clamp(1rem, 2.5vw, 1.8rem);
  background:
    linear-gradient(140deg, rgba(43, 231, 208, .08), transparent 55%),
    var(--ink-2);
}

.page-news .news-card--lead .news-card-body {
  display: flex;
  flex-direction: column;
  gap: .7rem;
  min-width: 0;
}

.page-news .news-card--lead .news-card-text {
  font-size: .95rem;
}

/* 图文容器 */
.page-news .media-frame {
  margin: 0;
  min-width: 0;
}

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

.page-news .news-figure {
  margin-top: var(--news-gap);
}

/* 数据更新日志 */
.page-news .news-log {
  display: grid;
  gap: 2px;
  background: var(--line);
  border: var(--line-w, 2px) solid var(--line);
  align-self: start;
}

.page-news .log-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: .3rem;
  padding: .9rem 1rem;
  background: var(--ink-1);
  min-width: 0;
}

.page-news .log-week {
  font-size: .8rem;
  color: var(--cyan);
  letter-spacing: .04em;
}

.page-news .log-text {
  font-size: .9rem;
  line-height: 1.65;
  color: var(--white);
}

.page-news .log-value {
  font-size: .84rem;
  color: var(--orange);
  letter-spacing: .06em;
}

.page-news .log-chart {
  margin: 0;
  padding: 1rem;
  border: var(--line-w, 2px) solid var(--line);
  background: var(--ink-1);
  box-shadow: var(--shadow-hard);
  min-width: 0;
}

.page-news .log-chart-title {
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .08em;
  color: var(--mist);
  text-transform: uppercase;
}

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

.page-news .log-chart-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin: .7rem 0 0;
  font-size: .74rem;
  color: var(--mist);
}

.page-news .legend-cyan {
  color: var(--cyan);
}

.page-news .legend-orange {
  color: var(--orange);
}

/* 版本迭代 */
.page-news .version-list {
  display: grid;
  gap: .9rem;
  min-width: 0;
}

.page-news .version-item {
  display: grid;
  gap: .4rem;
  padding: .85rem 0 .85rem 1.1rem;
  border-left: 3px solid var(--line);
  min-width: 0;
  transition: border-color .24s ease;
}

.page-news .version-item:hover {
  border-left-color: var(--cyan);
}

.page-news .version-item--current {
  border-left-color: var(--orange);
  background: linear-gradient(90deg, rgba(255, 122, 51, .12), transparent 70%);
}

.page-news .version-tag {
  font-size: .76rem;
  letter-spacing: .1em;
  color: var(--cyan);
}

.page-news .version-item--current .version-tag {
  color: var(--orange);
}

.page-news .version-item p {
  margin: 0;
  font-size: .9rem;
  line-height: 1.7;
  color: var(--mist);
}

/* 专题系列 */
.page-news .series-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--news-gap);
  min-width: 0;
}

.page-news .series-card {
  background:
    linear-gradient(180deg, rgba(43, 231, 208, .07), transparent 60%),
    var(--ink-2);
}

.page-news .series-link {
  margin-top: auto;
  align-self: flex-start;
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .06em;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(43, 231, 208, .55);
  padding-bottom: 2px;
}

.page-news .series-link:hover {
  color: var(--cyan-soft);
}

/* 更新订阅 */
.page-news .follow-block {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1rem, 2.5vw, 1.8rem);
  padding: clamp(1.2rem, 3vw, 2rem);
  border: var(--line-w, 2px) solid var(--orange);
  background:
    linear-gradient(135deg, rgba(255, 122, 51, .14), transparent 58%),
    var(--ink-1);
  box-shadow: var(--shadow-hard);
  min-width: 0;
}

.page-news .follow-block h3 {
  margin-bottom: .6rem;
}

.page-news .follow-actions {
  display: flex;
  flex-wrap: wrap;
  gap: .7rem;
  margin-top: 1.1rem;
}

.page-news .follow-points {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .6rem;
  font-size: .88rem;
  line-height: 1.6;
  color: var(--mist);
}

.page-news .follow-points li {
  padding-left: 1.1rem;
  position: relative;
}

.page-news .follow-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .55em;
  width: .5rem;
  height: .5rem;
  background: var(--cyan);
}

.page-news .news-crosslinks {
  display: flex;
  flex-wrap: wrap;
  gap: .6rem;
  margin-top: 1.2rem;
}

.page-news .crosslink {
  display: inline-block;
  padding: .5rem .85rem;
  font-size: .84rem;
  color: var(--white);
  text-decoration: none;
  border: 2px solid var(--line);
  background: var(--ink-2);
  transition: border-color .22s ease, color .22s ease;
}

.page-news .crosslink:hover {
  border-color: var(--cyan);
  color: var(--cyan);
}

/* 平板 */
@media (min-width: 720px) {
  .page-news .news-facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

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

  .page-news .log-row {
    grid-template-columns: 9.5rem minmax(0, 1fr) auto;
    align-items: center;
    gap: 1rem;
  }

  .page-news .log-value {
    text-align: right;
  }

  .page-news .follow-block {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    align-items: center;
  }
}

/* 桌面：左索引 + 右画幅 */
@media (min-width: 1000px) {
  .page-news .news-shell {
    grid-template-columns: var(--rail-w) minmax(0, 1fr);
    gap: clamp(2rem, 3.4vw, 3.6rem);
  }

  .page-news .news-rail {
    position: sticky;
    top: 6.5rem;
    padding-right: .5rem;
    border-right: var(--line-w, 2px) solid var(--line);
    padding-bottom: 1rem;
  }

  .page-news .rail-list {
    flex-direction: column;
    overflow: visible;
    gap: .4rem;
  }

  .page-news .rail-list a {
    white-space: normal;
  }

  .page-news .news-card--lead {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.02fr);
    align-items: center;
  }

  .page-news .news-card--lead .news-card-body {
    order: 1;
  }

  .page-news .news-card--lead .media-frame {
    order: 2;
  }

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

  .page-news .version-list {
    gap: 1.1rem;
  }
}

@media (min-width: 1280px) {
  .page-news .news-head {
    display: grid;
    grid-template-columns: 6.5rem minmax(0, 1fr);
    column-gap: 1.6rem;
    align-items: start;
  }

  .page-news .news-head .chapter-index {
    margin-bottom: 0;
    font-size: clamp(4rem, 7vw, 6.5rem);
  }

  .page-news .news-head h2,
  .page-news .news-head .news-sub {
    grid-column: 2;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .news-card,
  .page-news .version-item,
  .page-news .crosslink,
  .page-news .rail-list a {
    transition: none;
  }

  .page-news .news-card:hover {
    transform: none;
  }
}