.page-news {
  --news-line: 1px solid rgba(51, 80, 143, .5);
  --news-line-soft: 1px solid rgba(195, 201, 218, .14);
  --news-gap: clamp(48px, 7vw, 96px);
  color: var(--snow-50);
  padding-bottom: clamp(72px, 10vw, 128px);
}

.page-news .news-shell {
  position: relative;
}

/* ---------- 面包屑 ---------- */
.page-news .breadcrumb {
  padding-top: clamp(20px, 4vw, 40px);
  font-size: 13px;
}

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

.page-news .breadcrumb li {
  display: flex;
  align-items: center;
  gap: 8px;
}

.page-news .breadcrumb li + li::before {
  content: "/";
  color: var(--ink-500);
}

.page-news .breadcrumb a {
  color: var(--mist-300);
  text-decoration: none;
}

.page-news .breadcrumb a:hover {
  color: var(--gold-300);
}

/* ---------- 刊头区 ---------- */
.page-news .news-mast {
  display: grid;
  gap: clamp(26px, 5vw, 52px);
  padding: clamp(30px, 6vw, 68px) 0 clamp(38px, 6vw, 78px);
  border-bottom: var(--news-line-soft);
}

.page-news .news-mast h1 {
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: clamp(28px, 5.2vw, 54px);
  line-height: 1.26;
  letter-spacing: .02em;
  color: var(--snow-50);
  margin: .38em 0 .55em;
  max-width: 20ch;
}

.page-news .news-mast .lead {
  margin: 0;
  max-width: 46ch;
}

.page-news .news-mast__side {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  gap: clamp(20px, 4vw, 40px);
  padding-left: 18px;
  border-left: var(--news-line);
}

.page-news .news-vertnote {
  display: none;
  writing-mode: vertical-rl;
  font-family: var(--font-sans);
  font-size: 11px;
  letter-spacing: .3em;
  text-transform: uppercase;
  color: var(--gold-500);
}

.page-news .news-stats {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: clamp(24px, 4vw, 44px);
}

.page-news .news-stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-news .news-stat__num {
  font-family: var(--font-sans);
  font-variant-numeric: tabular-nums;
  font-size: clamp(26px, 4vw, 36px);
  font-weight: 700;
  line-height: 1;
  color: var(--gold-500);
}

.page-news .news-stat__label {
  font-size: 12.5px;
  letter-spacing: .1em;
  color: var(--mist-300);
}

/* ---------- 本期头条 ---------- */
.page-news .news-lead {
  display: grid;
  gap: clamp(24px, 4vw, 46px);
  padding: var(--news-gap) 0;
  border-bottom: var(--news-line-soft);
}

.page-news .news-lead__meta {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  font-size: 12.5px;
  letter-spacing: .06em;
}

.page-news .news-lead__title {
  font-family: var(--font-serif);
  font-weight: 800;
  font-size: clamp(23px, 3.6vw, 34px);
  line-height: 1.38;
  letter-spacing: .01em;
  color: var(--snow-50);
  margin: .55em 0 .6em;
  max-width: 22ch;
}

.page-news .news-lead__text {
  margin: 0;
  font-size: 16px;
  line-height: 1.85;
  color: var(--mist-300);
  max-width: 62ch;
}

.page-news .news-lead__facts {
  display: grid;
  gap: 18px;
  margin: 26px 0 30px;
  padding-top: 24px;
  border-top: var(--news-line-soft);
}

.page-news .news-lead__facts > div {
  min-width: 0;
}

.page-news .news-lead__facts dt {
  font-family: var(--font-sans);
  font-size: 11.5px;
  letter-spacing: .2em;
  color: var(--gold-500);
  margin-bottom: 8px;
}

.page-news .news-lead__facts dd {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--mist-300);
}

.page-news .news-lead__media {
  margin: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: var(--news-line-soft);
}

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

/* ---------- 更新记录 ---------- */
.page-news .news-log {
  padding: var(--news-gap) 0;
  border-bottom: var(--news-line-soft);
}

.page-news .section__head h2 {
  font-family: var(--font-serif);
  font-weight: 800;
  font-size: clamp(22px, 3.4vw, 34px);
  line-height: 1.32;
  letter-spacing: .015em;
  color: var(--snow-50);
  margin: .38em 0 .5em;
  max-width: 24ch;
}

.page-news .news-log__note,
.page-news .news-themes__note,
.page-news .news-cases__note {
  margin: 0 0 clamp(22px, 3vw, 36px);
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--mist-300);
  max-width: 56ch;
}

.page-news .news-log__list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: var(--news-line-soft);
}

.page-news .news-log__item {
  border-bottom: var(--news-line-soft);
}

.page-news .news-log__entry > summary {
  display: grid;
  grid-template-columns: 62px minmax(0, 1fr) 18px;
  align-items: center;
  gap: 12px;
  padding: 16px 6px;
  cursor: pointer;
  list-style: none;
  transition: background .3s ease, padding-left .3s ease;
}

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

.page-news .news-log__entry > summary::marker {
  content: "";
}

.page-news .news-log__entry > summary::after {
  content: "";
  justify-self: end;
  width: 9px;
  height: 9px;
  border-right: 1.5px solid var(--gold-500);
  border-bottom: 1.5px solid var(--gold-500);
  transform: rotate(45deg);
  transition: transform .3s ease;
}

.page-news .news-log__entry[open] > summary::after {
  transform: rotate(-135deg);
}

.page-news .news-log__entry > summary:hover {
  background: rgba(51, 80, 143, .17);
  padding-left: 14px;
}

.page-news .news-log__entry > summary:focus-visible {
  outline: 2px solid var(--gold-500);
  outline-offset: -2px;
  border-radius: var(--radius-sm);
}

.page-news .news-log__no {
  font-family: var(--font-sans);
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  letter-spacing: .02em;
  color: var(--mist-300);
  transition: color .3s ease;
}

.page-news .news-log__entry[open] .news-log__no {
  color: var(--gold-500);
}

.page-news .news-log__head {
  min-width: 0;
}

.page-news .news-log__topic {
  display: block;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(15px, 2.2vw, 18px);
  line-height: 1.5;
  color: var(--snow-50);
}

.page-news .news-log__scope {
  display: block;
  margin-top: 5px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--mist-300);
}

.page-news .news-log__body {
  padding: 2px 6px 24px 74px;
}

.page-news .news-log__body p {
  margin: 0 0 12px;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--mist-300);
  max-width: 64ch;
}

.page-news .news-log__body p:last-child {
  margin-bottom: 0;
}

.page-news .news-log__body strong {
  color: var(--gold-300);
  font-weight: 600;
}

/* ---------- 三条主题带 ---------- */
.page-news .news-themes {
  padding: var(--news-gap) 0;
  border-bottom: var(--news-line-soft);
}

.page-news .news-rail-group {
  display: grid;
  gap: clamp(34px, 5vw, 58px);
}

.page-news .news-rail {
  display: grid;
  gap: 16px;
  --rail-c: var(--ink-500);
}

.page-news .news-rail--version {
  --rail-c: var(--banner-cyan);
}

.page-news .news-rail--fit {
  --rail-c: var(--banner-green);
}

.page-news .news-rail--scene {
  --rail-c: var(--gold-500);
}

.page-news .news-rail__head {
  display: grid;
  gap: 8px;
  padding-bottom: 14px;
  border-bottom: 3px solid var(--rail-c);
}

.page-news .news-rail__title {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 800;
  font-size: clamp(19px, 2.6vw, 24px);
  line-height: 1.4;
  color: var(--snow-50);
}

.page-news .news-rail__desc {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--mist-300);
  max-width: 52ch;
}

.page-news .news-rail__track {
  display: flex;
  gap: 16px;
  overflow-x: auto;
  scroll-snap-type: x proximity;
  padding: 4px 2px 16px;
  scrollbar-width: thin;
  scrollbar-color: var(--ink-500) transparent;
  -webkit-overflow-scrolling: touch;
}

.page-news .news-rail__track > * {
  scroll-snap-align: start;
}

.page-news .news-rail__track:focus-visible {
  outline: 2px solid var(--gold-500);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

.page-news .news-card {
  flex: 0 0 min(76vw, 300px);
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 18px 18px 20px;
  border: var(--news-line-soft);
  border-radius: var(--radius-md);
  background: linear-gradient(158deg, rgba(30, 49, 96, .62), rgba(16, 28, 62, .5));
  transition: border-color .3s ease, transform .3s ease;
}

.page-news .news-card--feature {
  flex: 0 0 min(84vw, 380px);
}

.page-news .news-card:hover {
  border-color: rgba(217, 164, 65, .5);
  transform: translateY(-3px);
}

.page-news .news-card__thumb {
  margin: -18px -18px 4px;
  border-radius: var(--radius-md) var(--radius-md) 0 0;
  overflow: hidden;
  aspect-ratio: 4 / 3;
  background: linear-gradient(150deg, var(--ink-700), var(--ink-950));
}

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

.page-news .news-card__kicker {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 11px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--rail-c);
}

.page-news .news-card__title {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 17px;
  line-height: 1.52;
  color: var(--snow-50);
}

.page-news .news-card__meta {
  margin: auto 0 0;
  padding-top: 10px;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--mist-300);
}

/* ---------- 案例与方法 ---------- */
.page-news .news-cases {
  padding: var(--news-gap) 0;
  border-bottom: var(--news-line-soft);
}

.page-news .news-case {
  display: grid;
  gap: 10px;
  padding: clamp(22px, 3.4vw, 34px) 0;
  border-top: var(--news-line-soft);
}

.page-news .news-cases__note + .news-case {
  border-top: none;
}

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

.page-news .news-case__no {
  font-family: var(--font-sans);
  font-variant-numeric: tabular-nums;
  font-size: 13px;
  letter-spacing: .18em;
  color: var(--gold-500);
}

.page-news .news-case__title {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 800;
  font-size: clamp(18px, 2.4vw, 23px);
  line-height: 1.45;
  color: var(--snow-50);
}

.page-news .news-case__link {
  display: inline-block;
  margin-top: 12px;
  font-size: 13.5px;
  color: var(--gold-300);
  text-decoration: none;
  border-bottom: 1px solid rgba(240, 206, 134, .4);
  padding-bottom: 2px;
}

.page-news .news-case__link:hover {
  color: var(--snow-50);
  border-bottom-color: var(--snow-50);
}

.page-news .news-case__link:focus-visible {
  outline: 2px solid var(--gold-500);
  outline-offset: 3px;
  border-radius: 3px;
}

.page-news .news-case__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist-300);
  max-width: 62ch;
}

/* ---------- 专题系列 ---------- */
.page-news .news-series {
  padding: var(--news-gap) 0;
  border-bottom: var(--news-line-soft);
}

.page-news .news-series__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-news .news-series__item {
  display: grid;
  gap: 10px;
  padding: clamp(20px, 3vw, 30px) 0;
  border-top: var(--news-line-soft);
}

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

.page-news .news-series__title {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 800;
  font-size: clamp(17px, 2.2vw, 21px);
  line-height: 1.5;
  color: var(--snow-50);
}

.page-news .news-series__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist-300);
  max-width: 60ch;
}

.page-news .news-series__meta {
  font-size: 12.5px;
  letter-spacing: .06em;
  color: var(--gold-500);
}

/* ---------- 收尾面板 ---------- */
.page-news .news-follow {
  margin-top: var(--news-gap);
  padding: clamp(28px, 5vw, 52px);
  border-radius: var(--radius-lg);
  border: var(--news-line-soft);
  background:
    radial-gradient(120% 160% at 88% 0%, rgba(217, 164, 65, .18), transparent 58%),
    linear-gradient(150deg, var(--ink-700), var(--ink-950));
  display: grid;
  gap: clamp(24px, 4vw, 40px);
}

.page-news .news-follow h2 {
  margin: .4em 0 .6em;
  font-family: var(--font-serif);
  font-weight: 800;
  font-size: clamp(21px, 3vw, 30px);
  line-height: 1.4;
  color: var(--snow-50);
  max-width: 24ch;
}

.page-news .news-follow__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist-300);
  max-width: 58ch;
}

.page-news .news-follow__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-content: start;
}

/* ---------- 响应式 ---------- */
@media (max-width: 639px) {
  .page-news .news-log__entry > summary {
    grid-template-columns: 52px minmax(0, 1fr) 16px;
    gap: 10px;
    padding: 15px 4px;
  }

  .page-news .news-log__entry > summary:hover {
    padding-left: 8px;
  }

  .page-news .news-log__no {
    font-size: 11px;
  }

  .page-news .news-log__body {
    padding: 2px 4px 22px 62px;
  }

  .page-news .news-card {
    flex: 0 0 min(84vw, 300px);
  }

  .page-news .news-card--feature {
    flex: 0 0 min(88vw, 340px);
  }
}

@media (min-width: 860px) {
  .page-news .news-lead__facts {
    grid-template-columns: 1fr 1fr;
    gap: 28px;
  }

  .page-news .news-case {
    grid-template-columns: 60px minmax(0, .95fr) minmax(0, 1.05fr);
    align-items: start;
    gap: 30px;
  }

  .page-news .news-case__no {
    padding-top: 8px;
  }

  .page-news .news-series__item {
    grid-template-columns: minmax(0, .8fr) minmax(0, 1.3fr) minmax(0, .6fr);
    align-items: baseline;
    gap: 32px;
  }
}

@media (min-width: 900px) {
  .page-news .news-mast {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, .7fr);
    align-items: end;
  }

  .page-news .news-mast__side {
    flex-direction: column;
    align-items: flex-end;
    justify-content: flex-end;
    gap: 28px;
    padding-left: 0;
    padding-right: 18px;
    border-left: none;
    border-right: var(--news-line);
    text-align: right;
  }

  .page-news .news-vertnote {
    display: block;
  }

  .page-news .news-stats {
    flex-direction: column;
    gap: 18px;
    align-items: flex-end;
  }

  .page-news .news-stat {
    align-items: flex-end;
  }

  .page-news .news-follow {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, .8fr);
    align-items: end;
  }

  .page-news .news-follow__actions {
    justify-content: flex-end;
  }
}

@media (min-width: 960px) {
  .page-news .news-lead {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    align-items: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .news-card,
  .page-news .news-log__entry > summary,
  .page-news .news-log__entry > summary::after,
  .page-news .news-log__no {
    transition: none;
  }

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