.page-news {
  --rail-w: 13rem;
  --news-gap: clamp(1.75rem, 4vw, 4rem);
}

/* ============ 首屏 ============ */
.page-news .news-hero {
  position: relative;
  padding: clamp(1.75rem, 4vw, 3rem) 0 clamp(2rem, 4.5vw, 3.5rem);
  border-bottom: 1px solid var(--c-line);
  background:
    radial-gradient(120% 150% at 88% -20%, rgba(31, 227, 208, .12), transparent 58%),
    linear-gradient(180deg, var(--c-navy-2), transparent 78%);
}

.page-news .news-hero-inner {
  display: grid;
  gap: clamp(1.75rem, 4vw, 3rem);
  align-items: end;
}

.page-news .news-hero-text {
  min-width: 0;
}

.page-news .news-hero h1 {
  margin: .5rem 0 0;
  font-size: clamp(2rem, 6.4vw, 4rem);
  font-weight: 900;
  line-height: 1.03;
  letter-spacing: -.025em;
  max-width: 22ch;
}

.page-news .news-hero .lede {
  margin-top: clamp(1rem, 2.4vw, 1.6rem);
  max-width: 52ch;
  font-size: clamp(1rem, 1.35vw, 1.125rem);
  color: var(--c-steel);
}

.page-news .hero-stats {
  display: grid;
  border: 1px solid var(--c-line);
  background: linear-gradient(180deg, rgba(16, 46, 74, .8), rgba(8, 25, 43, .55));
  box-shadow: var(--shadow-card);
}

.page-news .hero-stat {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  justify-content: flex-start;
  padding: .85rem 1.1rem;
  border-bottom: 1px solid var(--c-line-soft);
}

.page-news .hero-stat:last-child {
  border-bottom: 0;
}

.page-news .hero-stat-num {
  font-family: var(--f-mono);
  font-size: var(--fs-28);
  font-weight: 700;
  line-height: 1;
  color: var(--c-cyan);
  min-width: 2.2em;
}

.page-news .hero-stat-label {
  font-size: var(--fs-12);
  letter-spacing: .04em;
  color: var(--c-steel);
}

@media (min-width: 900px) {
  .page-news .news-hero-inner {
    grid-template-columns: minmax(0, 1fr) 15.5rem;
  }
}

/* ============ 主体布局 ============ */
.page-news .news-body {
  padding-top: clamp(1.5rem, 3.5vw, 3rem);
  padding-bottom: clamp(3rem, 7vw, 6rem);
}

.page-news .news-layout {
  display: grid;
  gap: var(--news-gap);
}

.page-news .news-rail {
  min-width: 0;
  overflow-x: auto;
  scrollbar-width: none;
  padding-bottom: .4rem;
  border-bottom: 1px solid var(--c-line-soft);
}

.page-news .news-rail::-webkit-scrollbar {
  display: none;
}

.page-news .rail-list {
  display: flex;
  gap: .5rem;
  margin: 0;
  padding: 0;
  list-style: none;
  min-width: max-content;
}

.page-news .rail-link {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .5rem .8rem;
  border: 1px solid var(--c-line);
  color: var(--c-steel);
  font-size: var(--fs-14);
  font-weight: 600;
  white-space: nowrap;
  text-decoration: none;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-news .rail-link:hover,
.page-news .rail-link:focus-visible {
  color: var(--c-paper);
  border-color: var(--c-cyan);
  background: rgba(31, 227, 208, .08);
}

.page-news .rail-index {
  font-family: var(--f-mono);
  font-size: var(--fs-12);
  color: var(--c-cyan);
}

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

  .page-news .news-rail {
    position: sticky;
    top: 7.5rem;
    overflow: visible;
    border-bottom: 0;
    padding-bottom: 0;
    align-self: start;
  }

  .page-news .rail-list {
    flex-direction: column;
    gap: 0;
    min-width: 0;
    border-left: 1px solid var(--c-line);
  }

  .page-news .rail-link {
    position: relative;
    display: flex;
    border: 0;
    padding: .65rem 0 .65rem 1.15rem;
    background: none;
    white-space: normal;
    line-height: 1.4;
  }

  .page-news .rail-link::before {
    content: "";
    position: absolute;
    left: -1px;
    top: 12%;
    width: 2px;
    height: 76%;
    background: var(--c-cyan);
    transform: scaleY(.25);
    transform-origin: top;
    opacity: 0;
    transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease);
  }

  .page-news .rail-link:hover,
  .page-news .rail-link:focus-visible {
    color: var(--c-paper);
    background: none;
    border-color: transparent;
  }

  .page-news .rail-link:hover::before,
  .page-news .rail-link:focus-visible::before {
    opacity: 1;
    transform: scaleY(1);
  }
}

/* ============ 内容流 ============ */
.page-news .news-stream {
  display: grid;
  gap: clamp(2.75rem, 6vw, 5rem);
  min-width: 0;
}

.page-news .stream-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  padding-bottom: .75rem;
  margin-bottom: clamp(1.25rem, 2.6vw, 2rem);
  border-bottom: 1px solid var(--c-line);
}

.page-news .stream-title {
  margin: 0;
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 900;
  letter-spacing: -.015em;
  line-height: 1.15;
}

.page-news .stream-note {
  font-family: var(--f-mono);
  font-size: var(--fs-12);
  letter-spacing: .06em;
  color: var(--c-steel);
}

.page-news .stream-head--onDark {
  border-bottom-color: rgba(143, 243, 232, .2);
}

/* ============ 条目块 ============ */
.page-news .stream-items {
  display: grid;
  gap: 1rem;
}

.page-news .news-item {
  position: relative;
  border: 1px solid var(--c-line);
  background: linear-gradient(180deg, rgba(16, 46, 74, .5), rgba(8, 25, 43, .38));
  box-shadow: var(--shadow-card);
  transition: border-color var(--dur) var(--ease);
}

.page-news .news-item:hover {
  border-color: rgba(31, 227, 208, .45);
}

.page-news .news-item-body {
  display: grid;
  gap: .65rem;
  align-content: start;
  padding: clamp(1.05rem, 2.4vw, 1.75rem);
}

.page-news .news-item-meta {
  display: flex;
  align-items: center;
  gap: .6rem;
  flex-wrap: wrap;
}

.page-news .news-item-stage {
  font-family: var(--f-mono);
  font-size: var(--fs-12);
  color: var(--c-steel);
  letter-spacing: .02em;
}

.page-news .news-item-title {
  margin: 0;
  font-size: clamp(1.05rem, 2.1vw, 1.35rem);
  font-weight: 900;
  line-height: 1.3;
  letter-spacing: -.01em;
}

.page-news .news-item-summary {
  margin: 0;
  max-width: 48ch;
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--c-steel);
}

.page-news .news-item-link {
  justify-self: start;
  margin-top: .15rem;
  font-size: var(--fs-14);
  font-weight: 700;
  color: var(--c-cyan);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur) var(--ease);
}

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

/* 置顶大条目 */
.page-news .news-item--lead {
  display: grid;
  border-left: 3px solid var(--c-cyan);
}

.page-news .news-item--lead .news-item-media {
  position: relative;
  margin: 0;
  overflow: hidden;
  border-bottom: 1px solid var(--c-line);
}

.page-news .news-item--lead .news-item-media img {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 11rem;
  object-fit: cover;
  filter: saturate(.85) contrast(1.05);
}

.page-news .news-item--lead .news-item-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(160deg, rgba(8, 25, 43, .1), rgba(8, 25, 43, .62));
  pointer-events: none;
}

.page-news .news-item--lead .news-item-title {
  font-size: clamp(1.35rem, 3.1vw, 2.05rem);
}

.page-news .news-item--lead .news-item-summary {
  font-size: var(--fs-16);
}

@media (min-width: 760px) {
  .page-news .news-item--lead {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
  }

  .page-news .news-item--lead .news-item-media {
    border-bottom: 0;
    border-right: 1px solid var(--c-line);
  }

  .page-news .news-item--lead .news-item-body {
    align-content: center;
  }
}

/* 紧凑条目错位 */
@media (min-width: 1000px) {
  .page-news .stream-items > .news-item--compact:nth-child(odd) {
    margin-left: clamp(1rem, 7%, 5rem);
  }

  .page-news .stream-items > .news-item--compact:nth-child(even) {
    margin-right: clamp(1rem, 6%, 4rem);
  }
}

/* ============ 语义标签 ============ */
.page-news .chip {
  display: inline-flex;
  align-items: center;
  padding: .18rem .55rem;
  border: 1px solid currentColor;
  font-size: var(--fs-12);
  font-weight: 700;
  letter-spacing: .06em;
  line-height: 1.55;
}

.page-news .chip--topic {
  color: var(--c-cyan);
  background: rgba(31, 227, 208, .09);
}

.page-news .chip--build {
  color: var(--c-cyan-soft);
  background: rgba(143, 243, 232, .08);
}

.page-news .chip--up {
  color: var(--c-green);
  background: rgba(37, 194, 101, .1);
}

.page-news .chip--down {
  color: var(--c-red);
  background: rgba(240, 82, 75, .1);
}

.page-news .chip--cup {
  color: var(--c-gold);
  background: rgba(243, 197, 68, .1);
}

/* ============ 功能迭代 ============ */
.page-news .iter-wrap {
  display: grid;
  gap: clamp(1.75rem, 4vw, 2.75rem);
}

.page-news .iter-list {
  margin: 0;
  padding: 0 0 0 1.5rem;
  list-style: none;
  border-left: 1px solid var(--c-line);
  display: grid;
}

.page-news .iter-item {
  position: relative;
  padding-bottom: 1.65rem;
}

.page-news .iter-item:last-child {
  padding-bottom: 0;
}

.page-news .iter-item::before {
  content: "";
  position: absolute;
  left: calc(-1.5rem - 3.5px);
  top: .5rem;
  width: 6px;
  height: 6px;
  border: 1px solid var(--c-cyan);
  border-radius: 50%;
  background: var(--c-navy);
  box-shadow: 0 0 0 3px rgba(31, 227, 208, .12);
}

.page-news .iter-stage {
  display: block;
  margin-bottom: .3rem;
  font-family: var(--f-mono);
  font-size: var(--fs-12);
  letter-spacing: .1em;
  color: var(--c-cyan);
}

.page-news .iter-title {
  margin: 0 0 .35rem;
  font-size: var(--fs-20);
  font-weight: 800;
  line-height: 1.35;
}

.page-news .iter-text {
  margin: 0;
  max-width: 46ch;
  font-size: var(--fs-14);
  line-height: 1.8;
  color: var(--c-steel);
}

.page-news .news-figure {
  margin: 0;
  border: 1px solid var(--c-line);
  overflow: hidden;
  background: var(--c-navy-2);
  box-shadow: var(--shadow-card);
}

.page-news .news-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 14 / 9;
  object-fit: cover;
  filter: saturate(.85) contrast(1.05);
}

.page-news .news-figure figcaption {
  padding: .75rem 1rem;
  border-top: 1px solid var(--c-line);
  font-size: var(--fs-12);
  line-height: 1.6;
  color: var(--c-steel);
}

@media (min-width: 900px) {
  .page-news .iter-wrap {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
    align-items: start;
  }

  .page-news .news-figure {
    position: sticky;
    top: 7.5rem;
  }
}

/* ============ 专题系列 ============ */
.page-news .series-band {
  position: relative;
  margin: 0 0 clamp(1.25rem, 3vw, 2rem);
  overflow: hidden;
  border: 1px solid var(--c-line);
}

.page-news .series-band img {
  display: block;
  width: 100%;
  height: clamp(8.5rem, 20vw, 13.5rem);
  object-fit: cover;
  filter: saturate(.9);
}

.page-news .series-band::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(8, 25, 43, .9), rgba(8, 25, 43, .3) 55%, rgba(8, 25, 43, .78));
  pointer-events: none;
}

.page-news .series-band-cap {
  position: absolute;
  left: clamp(1rem, 3vw, 2rem);
  bottom: clamp(.9rem, 2.4vw, 1.6rem);
  z-index: 1;
  display: grid;
  gap: .3rem;
  max-width: 26ch;
}

.page-news .series-band-title {
  font-size: clamp(1.1rem, 2.6vw, 1.6rem);
  font-weight: 900;
  letter-spacing: -.01em;
  color: var(--c-paper);
}

.page-news .series-band-sub {
  font-family: var(--f-mono);
  font-size: var(--fs-12);
  letter-spacing: .05em;
  color: var(--c-cyan-soft);
}

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

.page-news .series-card {
  position: relative;
  padding: clamp(1.1rem, 2.6vw, 1.75rem);
  display: grid;
  gap: .6rem;
  align-content: start;
  background: var(--c-navy-2);
  border-top: 3px solid var(--series-color, var(--c-cyan));
}

.page-news .series-card--up {
  --series-color: var(--c-green);
}

.page-news .series-card--down {
  --series-color: var(--c-red);
}

.page-news .series-card--cup {
  --series-color: var(--c-gold);
}

.page-news .series-card-title {
  margin: .15rem 0 0;
  font-size: var(--fs-20);
  font-weight: 800;
  line-height: 1.35;
}

.page-news .series-card-text {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.8;
  color: var(--c-steel);
}

@media (min-width: 760px) {
  .page-news .series-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ============ 数据节点 ============ */
.page-news .node-list {
  display: grid;
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  border: 1px solid var(--c-line);
  background: var(--c-line);
}

.page-news .node-item {
  padding: clamp(1rem, 2.4vw, 1.5rem);
  display: grid;
  gap: .4rem;
  align-content: start;
  background: var(--c-navy-2);
}

.page-news .node-time {
  font-family: var(--f-mono);
  font-size: var(--fs-14);
  font-weight: 700;
  letter-spacing: .03em;
  color: var(--c-cyan);
}

.page-news .node-title {
  margin: .15rem 0 0;
  font-size: var(--fs-16);
  font-weight: 800;
  line-height: 1.4;
}

.page-news .node-text {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.8;
  color: var(--c-steel);
}

@media (min-width: 760px) {
  .page-news .node-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* ============ 共创 ============ */
.page-news .coop {
  display: grid;
  gap: clamp(1.25rem, 3vw, 2.5rem);
  padding: clamp(1.3rem, 3.2vw, 2.4rem);
  border: 1px solid var(--c-line);
  border-left: 3px solid var(--c-cyan);
  background: linear-gradient(118deg, rgba(16, 46, 74, .78), rgba(8, 25, 43, .5));
}

.page-news .coop-figure {
  display: grid;
  gap: .2rem;
  align-content: center;
}

.page-news .coop-num {
  font-family: var(--f-mono);
  font-size: clamp(3rem, 9vw, 5.5rem);
  font-weight: 700;
  line-height: .88;
  color: var(--c-cyan);
}

.page-news .coop-unit {
  font-size: var(--fs-12);
  letter-spacing: .08em;
  color: var(--c-steel);
}

.page-news .coop-body {
  display: grid;
  gap: .7rem;
  align-content: start;
  min-width: 0;
}

.page-news .coop-title {
  margin: 0;
  font-size: clamp(1.15rem, 2.5vw, 1.6rem);
  font-weight: 900;
  line-height: 1.3;
}

.page-news .coop-text {
  margin: 0;
  max-width: 52ch;
  font-size: var(--fs-14);
  line-height: 1.8;
  color: var(--c-steel);
}

.page-news .coop .btn {
  justify-self: start;
  margin-top: .4rem;
}

@media (min-width: 760px) {
  .page-news .coop {
    grid-template-columns: minmax(0, 12rem) minmax(0, 1fr);
    align-items: center;
  }
}

/* ============ 赛季总结 ============ */
.page-news .season-block {
  position: relative;
  overflow: hidden;
  padding: clamp(1.4rem, 3.6vw, 2.8rem);
  border: 1px solid var(--c-line);
  background: linear-gradient(180deg, var(--c-navy-2), var(--c-navy-deep));
  box-shadow: var(--shadow-pop);
}

.page-news .season-block-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.page-news .season-block-bg img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .2;
  filter: saturate(.7);
}

.page-news .season-block-inner {
  position: relative;
  z-index: 1;
}

.page-news .season-lede {
  margin: 0;
  max-width: 58ch;
  font-size: var(--fs-16);
  line-height: 1.8;
  color: var(--c-steel);
}

.page-news .season-details {
  margin-top: clamp(1.25rem, 3vw, 2rem);
  border-top: 1px solid var(--c-line);
  padding-top: 1rem;
}

.page-news .season-details summary {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  cursor: pointer;
  list-style: none;
  font-size: var(--fs-14);
  font-weight: 700;
  color: var(--c-cyan);
}

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

.page-news .season-details summary::after {
  content: "+";
  font-family: var(--f-mono);
  font-size: var(--fs-16);
  line-height: 1;
}

.page-news .season-details[open] summary::after {
  content: "−";
}

.page-news .archive-grid {
  display: grid;
  gap: 1px;
  margin-top: 1.25rem;
  border: 1px solid var(--c-line);
  background: var(--c-line);
}

.page-news .archive-item {
  padding: 1rem;
  display: grid;
  gap: .35rem;
  align-content: start;
  background: rgba(8, 25, 43, .85);
}

.page-news .archive-season {
  font-family: var(--f-mono);
  font-size: var(--fs-12);
  letter-spacing: .06em;
  color: var(--c-cyan);
}

.page-news .archive-title {
  margin: .1rem 0 0;
  font-size: var(--fs-16);
  font-weight: 800;
  line-height: 1.4;
}

.page-news .archive-text {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--c-steel);
}

.page-news .season-foot {
  margin: clamp(1.25rem, 3vw, 1.75rem) 0 0;
  font-size: var(--fs-14);
  line-height: 1.8;
  color: var(--c-steel);
}

.page-news .season-foot a {
  color: var(--c-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(31, 227, 208, .35);
}

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

@media (min-width: 640px) {
  .page-news .archive-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1024px) {
  .page-news .archive-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}