.page-news {
  --news-line: rgba(127, 168, 196, 0.28);
  --news-line-strong: rgba(127, 168, 196, 0.55);
  --news-scoop: rgba(14, 44, 71, 0.6);
  background: var(--ink-deep);
  color: var(--text-on-ink);
}

/* ---------- 首屏 ---------- */
.page-news .news-hero {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  padding: calc(var(--header-h) + 36px) 0 60px;
}

.page-news .news-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -2;
  background: linear-gradient(158deg, var(--ink-layer) 0%, var(--ink-deep) 68%);
  clip-path: polygon(0 0, 100% 0, 100% 74%, 0 100%);
}

.page-news .news-hero::after {
  content: "";
  position: absolute;
  z-index: -1;
  top: 4%;
  right: -20vw;
  width: 58vw;
  height: 62%;
  background: linear-gradient(135deg, rgba(53, 240, 208, 0.16), rgba(53, 240, 208, 0) 62%);
  clip-path: polygon(20% 0, 100% 0, 80% 100%, 0 100%);
  pointer-events: none;
}

.page-news .crumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 0 8px;
  margin: 0 0 26px;
  padding: 0;
  list-style: none;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--text-on-ink-dim);
}

.page-news .crumb a {
  color: var(--text-on-ink-dim);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 160ms ease, border-color 160ms ease;
}

.page-news .crumb a:hover {
  color: var(--neon);
  border-bottom-color: var(--neon);
}

.page-news .crumb li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--mist);
}

.page-news .news-hero-inner {
  display: grid;
  gap: 34px;
}

.page-news .news-hero-kicker {
  color: var(--neon);
  margin: 0 0 16px;
}

.page-news .news-hero h1 {
  margin: 0 0 18px;
  font-size: clamp(34px, 7.2vw, 68px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  font-weight: 800;
  color: var(--paper);
  max-width: 15em;
}

.page-news .news-hero-lead {
  max-width: 56ch;
  color: var(--text-on-ink);
  margin: 0 0 26px;
}

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

.page-news .news-hero-figures {
  display: grid;
  gap: 0;
  border: 1px solid var(--news-line-strong);
  background: rgba(14, 44, 71, 0.66);
  padding: 4px 20px;
}

.page-news .hero-figure {
  display: grid;
  gap: 6px;
  padding: 18px 0;
  border-bottom: 1px solid var(--news-line);
}

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

.page-news .hero-figure-value {
  font-size: clamp(24px, 5vw, 34px);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.01em;
  color: var(--neon);
}

.page-news .hero-figure-key {
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--text-on-ink-dim);
  line-height: 1.6;
}

/* ---------- 阶段筛选带 ---------- */
.page-news .stage-strip {
  position: sticky;
  top: var(--header-h-compact);
  z-index: 20;
  overflow: hidden;
  background: var(--ink-deep);
  border-top: 1px solid var(--news-line);
  border-bottom: 1px solid var(--news-line-strong);
}

.page-news .stage-strip-texture {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.18;
  pointer-events: none;
}

.page-news .stage-strip .shell {
  position: relative;
  z-index: 1;
}

.page-news .stage-rail {
  display: flex;
  gap: 6px;
  overflow-x: auto;
  padding: 10px 0;
  scroll-snap-type: x proximity;
  -webkit-overflow-scrolling: touch;
}

.page-news .stage-chip {
  flex: 0 0 auto;
  scroll-snap-align: start;
  display: inline-flex;
  flex-direction: column;
  gap: 3px;
  padding: 8px 16px 10px;
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: border-color 160ms ease, background-color 160ms ease;
}

.page-news .stage-chip-name {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-on-ink-dim);
  white-space: nowrap;
  transition: color 160ms ease;
}

.page-news .stage-chip-meta {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--mist);
  white-space: nowrap;
}

.page-news .stage-chip:hover {
  border-bottom-color: var(--coral);
  background: rgba(14, 44, 71, 0.7);
}

.page-news .stage-chip:hover .stage-chip-name {
  color: var(--paper);
}

.page-news .stage-chip.is-active {
  border-bottom-color: var(--neon);
  background: rgba(53, 240, 208, 0.07);
}

.page-news .stage-chip.is-active .stage-chip-name {
  color: var(--paper);
}

/* ---------- 通用区块 ---------- */
.page-news .news-section {
  padding: 52px 0;
}

.page-news .section-head {
  margin-bottom: 28px;
  max-width: 70ch;
}

.page-news .section-head .label {
  color: var(--neon);
  margin: 0 0 12px;
}

.page-news .section-head h2 {
  margin: 0 0 12px;
  font-size: clamp(24px, 3.6vw, 40px);
  line-height: 1.16;
  letter-spacing: -0.015em;
  font-weight: 800;
  color: var(--paper);
}

.page-news .section-lead {
  margin: 0;
  color: var(--text-on-ink-dim);
  max-width: 62ch;
}

.page-news .section-lead a {
  color: var(--electric);
  text-decoration: none;
  border-bottom: 1px solid var(--neon);
}

.page-news .section-lead a:hover {
  color: var(--neon);
}

/* ---------- 阶段分组与战报列表 ---------- */
.page-news .stage-group + .stage-group {
  margin-top: 44px;
  padding-top: 38px;
  border-top: 1px solid var(--news-line);
}

.page-news .stage-group-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 14px;
  margin-bottom: 16px;
}

.page-news .stage-index {
  font-size: clamp(28px, 5vw, 40px);
  font-weight: 800;
  line-height: 1;
  color: var(--neon);
  opacity: 0.82;
}

.page-news .stage-group-head h3 {
  margin: 0;
  font-size: clamp(18px, 2.4vw, 24px);
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--paper);
}

.page-news .stage-group-note {
  flex: 1 1 100%;
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--text-on-ink-dim);
}

.page-news .report-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--news-line);
}

.page-news .report-item {
  position: relative;
  border-bottom: 1px solid var(--news-line);
  padding: 14px 0 14px 14px;
  transition: background-color 180ms ease;
}

.page-news .report-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  bottom: 12px;
  width: 3px;
  background: var(--coral);
  transform: scaleY(0);
  transform-origin: top center;
  transition: transform 180ms ease;
}

.page-news .report-item:hover,
.page-news .report-item:focus-within {
  background: var(--news-scoop);
}

.page-news .report-item:hover::before,
.page-news .report-item:focus-within::before {
  transform: scaleY(1);
}

.page-news .report-main {
  min-width: 0;
}

.page-news .report-line {
  display: grid;
  gap: 10px;
  min-width: 0;
}

.page-news .report-id {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.page-news .report-teams {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.01em;
  color: var(--paper);
}

.page-news .report-figures {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 18px;
}

.page-news .report-score {
  font-size: clamp(24px, 3.4vw, 32px);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-news .report-metric {
  display: flex;
  flex-direction: column;
  gap: 3px;
  line-height: 1;
}

.page-news .report-metric-value {
  font-size: 17px;
  font-weight: 700;
  color: var(--neon);
}

.page-news .report-metric-key {
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-news .report-item .tag--coral {
  font-size: 12px;
  letter-spacing: 0.04em;
}

.page-news .report-thumb {
  margin: 14px 0 0;
  border: 1px solid var(--news-line-strong);
}

.page-news .report-item--featured {
  padding-top: 20px;
  padding-bottom: 20px;
}

/* ---------- 展开组 ---------- */
.page-news .expand {
  margin-top: 8px;
}

.page-news .expand-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 0;
  background: none;
  border: 0;
  font: inherit;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--electric);
  cursor: pointer;
  transition: color 160ms ease;
}

.page-news .expand-btn:hover,
.page-news .expand-btn:focus-visible {
  color: var(--neon);
}

.page-news .expand-btn:focus-visible {
  outline: 2px solid var(--neon);
  outline-offset: 3px;
}

.page-news .expand-mark {
  width: 9px;
  height: 9px;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: rotate(45deg) translate(-1px, -1px);
  transition: transform 180ms ease;
}

.page-news .expand-btn[aria-expanded="true"] .expand-mark {
  transform: rotate(-135deg) translate(-1px, -1px);
}

.page-news .expand-body {
  overflow: hidden;
  max-height: 0;
  transition: max-height 180ms ease;
}

.page-news .expand[data-open="true"] .expand-body {
  max-height: 420px;
}

.page-news .expand-inner {
  padding: 10px 0 2px;
  border-left: 2px solid rgba(53, 240, 208, 0.4);
  padding-left: 14px;
}

.page-news .expand-inner p {
  margin: 0;
  max-width: 62ch;
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-on-ink-dim);
}

/* ---------- 专题系列（横向带） ---------- */
.page-news .topics-band {
  position: relative;
  margin: 24px 0;
  padding: 76px 0 84px;
  background: var(--ink-layer);
  clip-path: polygon(0 3.2%, 100% 0, 100% 97%, 0 100%);
}

.page-news .topics-band-inner {
  display: grid;
  gap: 28px;
}

.page-news .topics-visual {
  margin: 0;
  border: 1px solid var(--news-line-strong);
}

.page-news .topics-visual img {
  filter: saturate(0.9);
}

.page-news .topics-copy .label {
  color: var(--neon);
  margin: 0 0 12px;
}

.page-news .topics-copy h2 {
  margin: 0 0 12px;
  font-size: clamp(24px, 3.6vw, 40px);
  line-height: 1.16;
  letter-spacing: -0.015em;
  font-weight: 800;
  color: var(--paper);
}

.page-news .topic-list {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  border-top: 1px solid var(--news-line-strong);
}

.page-news .topic-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  padding: 18px 0;
  border-bottom: 1px solid var(--news-line);
}

.page-news .topic-code {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--neon);
  padding-top: 2px;
}

.page-news .topic-body h3 {
  margin: 0 0 6px;
  font-size: 17px;
  font-weight: 700;
  color: var(--paper);
}

.page-news .topic-body p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-on-ink-dim);
  max-width: 58ch;
}

/* ---------- 版本日志 ---------- */
.page-news .version-visual {
  margin: 0 0 26px;
  border: 1px solid var(--news-line-strong);
}

.page-news .version-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--news-line-strong);
}

.page-news .version-item {
  display: grid;
  gap: 8px;
  padding: 18px 0;
  border-bottom: 1px solid var(--news-line);
  transition: background-color 180ms ease;
}

.page-news .version-item:hover {
  background: var(--news-scoop);
}

.page-news .version-code {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--electric);
}

.page-news .version-item p {
  margin: 0;
  max-width: 68ch;
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-on-ink-dim);
}

/* ---------- 回访提示 ---------- */
.page-news .revisit-panel {
  padding: 30px 22px;
}

.page-news .revisit-head h2 {
  margin: 8px 0 10px;
  font-size: clamp(22px, 3vw, 32px);
  line-height: 1.2;
  letter-spacing: -0.01em;
  font-weight: 800;
  color: var(--ink-black);
}

.page-news .revisit-head .lead {
  margin: 0;
  color: #33506A;
  max-width: 58ch;
}

.page-news .revisit-steps {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  border-top: 1px solid rgba(10, 22, 34, 0.18);
}

.page-news .revisit-steps li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  padding: 16px 0;
  border-bottom: 1px solid rgba(10, 22, 34, 0.12);
}

.page-news .revisit-step-num {
  font-size: 15px;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: #0B5B74;
}

.page-news .revisit-steps p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-black);
  max-width: 62ch;
}

.page-news .revisit-steps a {
  color: var(--link-on-paper);
  text-decoration: none;
  border-bottom: 1px solid var(--neon);
}

.page-news .revisit-steps a:hover {
  border-bottom-color: var(--coral);
}

.page-news .revisit-note {
  margin: 18px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: #33506A;
}

.page-news .revisit-note a {
  color: var(--link-on-paper);
  text-decoration: none;
  border-bottom: 1px solid var(--neon);
}

/* ---------- 回到筛选带 ---------- */
.page-news .back-to-stages {
  display: block;
  width: fit-content;
  margin: 0 auto 56px;
  padding: 11px 20px;
  border: 1px solid var(--news-line-strong);
  color: var(--electric);
  font-size: 13px;
  letter-spacing: 0.08em;
  text-decoration: none;
  transition: background-color 160ms ease, color 160ms ease, border-color 160ms ease;
}

.page-news .back-to-stages:hover,
.page-news .back-to-stages:focus-visible {
  background: var(--neon);
  border-color: var(--neon);
  color: var(--ink-deep);
}

.page-news .back-to-stages:focus-visible {
  outline: 2px solid var(--neon);
  outline-offset: 3px;
}

/* ---------- 窄屏基础保障 ---------- */
.page-news img {
  max-width: 100%;
  height: auto;
}

.page-news .report-item,
.page-news .version-item,
.page-news .topic-item {
  min-width: 0;
}

/* ---------- 断点 ---------- */
@media (min-width: 760px) {
  .page-news .news-hero {
    padding: calc(var(--header-h) + 48px) 0 76px;
  }

  .page-news .report-line {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 24px;
  }

  .page-news .stage-group-note {
    flex: 0 1 auto;
  }

  .page-news .version-item {
    grid-template-columns: 96px minmax(0, 1fr);
    gap: 24px;
    align-items: baseline;
  }

  .page-news .revisit-panel {
    padding: 40px 36px;
  }
}

@media (min-width: 900px) {
  .page-news .news-hero-inner {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 0.62fr);
    align-items: end;
    gap: 48px;
  }

  .page-news .news-hero-figures {
    margin-bottom: 6px;
  }

  .page-news .news-section {
    padding: 72px 0;
  }

  .page-news .report-item--featured {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 300px;
    align-items: center;
    gap: 30px;
  }

  .page-news .report-item--featured .report-thumb {
    margin-top: 0;
  }

  .page-news .topics-band {
    padding: 96px 0 104px;
  }

  .page-news .topics-band-inner {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
    align-items: center;
    gap: 44px;
  }

  .page-news .topics-visual {
    transform: translateY(-28px);
  }

  .page-news .back-to-stages {
    margin-bottom: 72px;
  }
}

@media (min-width: 1120px) {
  .page-news .news-hero h1 {
    max-width: 13.5em;
  }

  .page-news .report-item {
    padding-left: 18px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .report-item,
  .page-news .report-item::before,
  .page-news .stage-chip,
  .page-news .expand-body,
  .page-news .expand-mark,
  .page-news .back-to-stages {
    transition: none;
  }
}