.page-news {
  --news-rail-w: 268px;
  --news-gap: clamp(20px, 3vw, 40px);
  --news-line: 1px solid var(--rule);
  --news-muted: rgba(61, 90, 115, 0.9);
  background: var(--ink-0);
  color: var(--frost);
  font-family: var(--font-body);
  overflow-x: hidden;
}

.page-news .breadcrumb {
  padding-top: 20px;
}

.page-news .breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--rule);
}

.page-news .breadcrumb__list a {
  color: var(--rule);
  text-decoration: none;
  transition: color var(--ease);
}

.page-news .breadcrumb__list a:hover,
.page-news .breadcrumb__list a:focus-visible {
  color: var(--signal);
}

.page-news .breadcrumb__current {
  color: var(--frost);
}

.page-news .eyebrow {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--venue);
}

/* ---------- 首屏 ---------- */

.page-news .news-hero {
  display: grid;
  gap: 22px;
  padding-block: clamp(22px, 4vw, 42px) clamp(26px, 4vw, 46px);
  border-bottom: var(--news-line);
}

.page-news .news-hero__eyebrow {
  margin: 0;
}

.page-news .news-hero h1 {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(1.85rem, 4.2vw, 3.2rem);
  line-height: 1.16;
  letter-spacing: -0.015em;
  max-width: 18ch;
}

.page-news .news-hero__lead {
  margin: 0;
  font-size: 0.98rem;
  line-height: 1.78;
  color: var(--frost);
  opacity: 0.78;
  max-width: 46ch;
}

.page-news .news-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: var(--frost);
  opacity: 0.72;
}

.page-news .news-hero__facts li {
  display: flex;
  align-items: baseline;
  gap: 7px;
}

.page-news .news-hero__facts .mono {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.35rem;
  line-height: 1;
  color: var(--signal);
  opacity: 1;
}

@media (min-width: 900px) {
  .page-news .news-hero {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: end;
    gap: 18px 56px;
  }

  .page-news .news-hero__eyebrow {
    grid-column: 1 / -1;
  }
}

/* ---------- 主布局 ---------- */

.page-news .news-layout {
  display: grid;
  gap: var(--news-gap);
  padding-block: clamp(26px, 4vw, 46px) clamp(40px, 6vw, 72px);
}

.page-news .news-body {
  min-width: 0;
  display: grid;
  gap: clamp(34px, 5vw, 60px);
}

@media (min-width: 1040px) {
  .page-news .news-layout {
    grid-template-columns: var(--news-rail-w) minmax(0, 1fr);
    align-items: start;
  }
}

/* ---------- 左侧索引 ---------- */

.page-news .news-rail {
  display: grid;
  gap: 26px;
  padding: 20px 18px;
  border: var(--news-line);
  background: var(--ink-1);
}

@media (min-width: 1040px) {
  .page-news .news-rail {
    position: sticky;
    top: calc(var(--header-h) + 20px);
  }
}

.page-news .news-rail__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--rule);
}

.page-news .news-rail__hint {
  margin: 0 0 14px;
  font-size: 0.82rem;
  line-height: 1.65;
  color: var(--frost);
  opacity: 0.68;
}

.page-news .news-rail__block--action {
  padding-top: 20px;
  border-top: var(--news-line);
}

.page-news .phase-scale {
  position: relative;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-news .phase-scale::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 12px;
  bottom: 12px;
  width: 2px;
  background: var(--ink-2);
}

.page-news .phase-scale__item {
  position: relative;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding: 9px 0 9px 26px;
}

.page-news .phase-scale__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 14px;
  width: 12px;
  height: 12px;
  border: 2px solid var(--rule);
  background: var(--ink-1);
  transform: rotate(45deg);
  transition: border-color var(--ease), background var(--ease);
}

.page-news .phase-scale__item.is-active::before {
  border-color: var(--signal);
  background: var(--signal);
}

.page-news .phase-scale__name {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--frost);
  opacity: 0.82;
}

.page-news .phase-scale__item.is-active .phase-scale__name {
  color: var(--signal);
  opacity: 1;
}

.page-news .phase-scale__meta {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--rule);
}

.page-news .phase-scale__item.is-active .phase-scale__meta {
  color: var(--signal);
}

.page-news .series-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-news .series-tag {
  display: inline-block;
  padding: 6px 10px;
  border: 1px solid var(--rule);
  font-size: 0.79rem;
  color: var(--frost);
  text-decoration: none;
  transition: transform var(--ease), border-color var(--ease), color var(--ease), background var(--ease);
}

.page-news .series-tag:hover,
.page-news .series-tag:focus-visible {
  border-color: var(--signal);
  color: var(--signal);
  transform: translateY(2px);
}

/* ---------- 头条观察 ---------- */

.page-news .news-lead {
  position: relative;
  border: var(--news-line);
  background: var(--ink-1);
  overflow: hidden;
}

.page-news .news-lead__media {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
}

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

.page-news .news-lead__body {
  padding: 20px;
  display: grid;
  gap: 12px;
}

.page-news .news-lead__kicker {
  display: flex;
  align-items: center;
  gap: 12px;
}

.page-news .news-lead__num {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.6rem;
  line-height: 1;
  color: var(--signal);
}

.page-news .news-lead h2 {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(1.25rem, 2.6vw, 2rem);
  line-height: 1.28;
  color: var(--frost);
}

.page-news .news-lead__text {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.78;
  color: var(--frost);
  opacity: 0.8;
}

.page-news .news-lead__foot {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  font-family: var(--font-mono);
  font-size: 0.71rem;
  letter-spacing: 0.08em;
  color: var(--rule);
}

@media (min-width: 880px) {
  .page-news .news-lead {
    aspect-ratio: 16 / 8;
    min-height: 320px;
  }

  .page-news .news-lead__media {
    position: absolute;
    inset: 0;
    aspect-ratio: auto;
  }

  .page-news .news-lead__media::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(7, 16, 24, 0.12) 0%, rgba(7, 16, 24, 0.58) 50%, rgba(7, 16, 24, 0.95) 100%);
  }

  .page-news .news-lead__body {
    position: absolute;
    inset: auto 0 0 0;
    padding: clamp(22px, 3vw, 38px);
    background: none;
    max-width: 62ch;
  }

  .page-news .news-lead h2 {
    font-size: clamp(1.4rem, 2.4vw, 2.1rem);
  }
}

/* ---------- 章节头 ---------- */

.page-news .news-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: end;
  gap: 0 16px;
  padding-bottom: 14px;
  margin-bottom: 20px;
  border-bottom: 2px solid var(--signal);
}

.page-news .news-head .chapter-num {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.4rem, 5.4vw, 3.8rem);
  line-height: 0.82;
  color: var(--signal);
  letter-spacing: -0.02em;
}

.page-news .news-head .eyebrow {
  margin: 0 0 4px;
  color: var(--rule);
}

.page-news .news-head h2 {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(1.12rem, 2.2vw, 1.5rem);
  line-height: 1.32;
  color: var(--frost);
}

/* ---------- 观察条目 ---------- */

.page-news .obs-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
}

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

.page-news .obs-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 22px 18px 16px;
  border: 1px solid var(--rule);
  min-width: 0;
  transition: border-color var(--ease), box-shadow var(--ease);
}

.page-news .obs-card--paper {
  background: var(--paper);
  color: var(--ink-dark);
  border-color: var(--ink-2);
}

.page-news .obs-card--dark {
  background: var(--ink-1);
  color: var(--frost);
}

.page-news .obs-card:hover {
  border-color: var(--signal);
}

.page-news .obs-card__tab {
  position: absolute;
  top: 14px;
  left: -10px;
  padding: 3px 10px;
  font-family: var(--font-mono);
  font-size: 0.67rem;
  letter-spacing: 0.1em;
  background: var(--venue);
  color: var(--ink-0);
  z-index: 2;
}

.page-news .obs-card__tab--venue {
  background: var(--venue);
  color: var(--ink-0);
}

.page-news .obs-card__tab--injury {
  background: var(--amber);
  color: var(--ink-0);
}

.page-news .obs-card__tab--version {
  background: var(--signal);
  color: var(--on-signal);
}

.page-news .obs-card__tab--calendar {
  background: var(--ink-2);
  color: var(--frost);
}

.page-news .obs-card__media {
  margin: 2px 0 4px;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border: 1px solid var(--rule);
}

.page-news .obs-card__media img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
}

.page-news .obs-card__meta {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 0.69rem;
  letter-spacing: 0.07em;
  color: var(--rule);
}

.page-news .obs-card--paper .obs-card__meta {
  color: rgba(17, 20, 23, 0.55);
}

.page-news .obs-card__title {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 1.02rem;
  line-height: 1.5;
}

.page-news .obs-card__sum {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--frost);
  opacity: 0.78;
}

.page-news .obs-card--paper .obs-card__sum {
  color: rgba(17, 20, 23, 0.78);
  opacity: 1;
}

/* ---------- 资料卡展开 ---------- */

.page-news .dossier {
  margin-top: auto;
  padding-top: 8px;
  border-top: 1px dashed rgba(61, 90, 115, 0.45);
}

.page-news .obs-card--paper .dossier {
  border-top-color: rgba(17, 20, 23, 0.22);
}

.page-news .dossier__trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  width: 100%;
  padding: 8px 0 2px;
  background: none;
  border: 0;
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: inherit;
  transition: color var(--ease);
}

.page-news .dossier__trigger:hover,
.page-news .dossier__trigger:focus-visible {
  color: var(--signal);
}

.page-news .dossier__sign {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  border: 1px solid currentColor;
  font-size: 0.9rem;
  line-height: 1;
  transition: transform 200ms ease;
}

.page-news .dossier[data-open] .dossier__sign {
  transform: rotate(45deg);
}

.page-news .dossier__panel {
  display: none;
}

.page-news .dossier[data-open] .dossier__panel {
  display: block;
}

.page-news .dossier__body {
  padding: 12px 0 6px;
}

.page-news .dossier__body ul {
  display: grid;
  gap: 9px;
  margin: 0;
  padding-left: 18px;
}

.page-news .dossier__body li {
  font-size: 0.85rem;
  line-height: 1.68;
}

.page-news .dossier__body li::marker {
  color: var(--signal);
}

/* ---------- 专题系列 ---------- */

.page-news .series-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
}

@media (min-width: 820px) {
  .page-news .series-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-news .series-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 24px 20px 20px;
  background: var(--ink-1);
  border: 1px solid var(--rule);
  scroll-margin-top: calc(var(--header-h) + 24px);
}

.page-news .series-card::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--venue);
}

.page-news .series-card--injury::after {
  background: var(--amber);
}

.page-news .series-card--version::after {
  background: var(--signal);
}

.page-news .series-card h3 {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 1rem;
  line-height: 1.45;
  color: var(--frost);
}

.page-news .series-card p {
  margin: 0;
  font-size: 0.87rem;
  line-height: 1.72;
  color: var(--frost);
  opacity: 0.72;
}

.page-news .series-card__count {
  margin-top: auto;
  padding-top: 10px;
  border-top: 1px solid var(--ink-2);
  font-family: var(--font-mono);
  font-size: 0.71rem;
  letter-spacing: 0.08em;
  color: var(--venue);
  opacity: 1;
}

/* ---------- 订阅 ---------- */

.page-news .news-sub {
  display: grid;
  gap: 24px;
  padding: clamp(24px, 4vw, 40px);
  border: 1px solid var(--rule);
  background: linear-gradient(135deg, var(--ink-1) 0%, var(--ink-2) 100%);
  scroll-margin-top: calc(var(--header-h) + 24px);
}

.page-news .news-sub .eyebrow {
  margin-bottom: 8px;
}

.page-news .news-sub h2 {
  margin: 0 0 12px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(1.25rem, 2.6vw, 1.8rem);
  line-height: 1.32;
  color: var(--frost);
}

.page-news .news-sub p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--frost);
  opacity: 0.78;
  max-width: 54ch;
}

.page-news .news-sub__action {
  display: grid;
  gap: 12px;
  align-content: start;
}

.page-news .news-sub__action .btn {
  text-align: center;
}

.page-news .news-sub__note {
  font-size: 0.8rem;
  opacity: 0.62;
}

.page-news .news-sub__note a {
  color: var(--venue);
  text-decoration: underline;
  text-underline-offset: 3px;
}

@media (min-width: 820px) {
  .page-news .news-sub {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: start;
    gap: 32px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .dossier__sign,
  .page-news .series-tag,
  .page-news .obs-card,
  .page-news .phase-scale__item::before {
    transition: none;
  }
}