.page-news {
  --news-rail: 184px;
  --news-tick: rgba(230, 201, 126, 0.5);
  background: var(--paper);
  color: var(--graphite);
}

.page-news .shell {
  padding-inline: var(--gutter);
}

/* ---------- 刊头 ---------- */
.page-news .news-mast {
  position: relative;
  overflow: hidden;
  background: var(--ink);
  color: var(--on-dark);
  padding: calc(var(--baseline) * 5) 0 calc(var(--baseline) * 7);
}

.page-news .news-mast::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 6px;
  background-image: repeating-linear-gradient(90deg, var(--gold) 0 1px, transparent 1px 14px);
  opacity: 0.45;
}

.page-news .news-mast::after {
  content: "62";
  position: absolute;
  right: -10px;
  bottom: -46px;
  font-family: var(--font-mono);
  font-size: clamp(150px, 30vw, 320px);
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px rgba(230, 201, 126, 0.16);
  pointer-events: none;
}

.page-news .news-mast__crumb {
  position: relative;
  z-index: 1;
  margin-bottom: calc(var(--baseline) * 4);
}

.page-news .news-mast__crumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--mist);
}

.page-news .news-mast__crumb li + li::before {
  content: "/";
  margin-right: 8px;
  color: rgba(230, 201, 126, 0.5);
}

.page-news .news-mast__crumb a {
  color: var(--on-dark);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.page-news .news-mast__crumb a:hover,
.page-news .news-mast__crumb a:focus-visible {
  border-bottom-color: var(--gold);
}

.page-news .news-mast__crumb [aria-current="page"] {
  color: var(--gold-light);
}

.page-news .news-mast__issue {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 calc(var(--baseline) * 2);
  font-size: 13px;
  letter-spacing: 0.22em;
  color: var(--gold-light);
}

.page-news .news-mast__sep {
  color: rgba(230, 201, 126, 0.45);
}

.page-news .news-mast__title {
  position: relative;
  z-index: 1;
  margin: 0 0 calc(var(--baseline) * 3);
  max-width: 22ch;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(30px, 6.4vw, 60px);
  line-height: 1.18;
  letter-spacing: 0.06em;
  color: var(--on-dark-strong);
}

.page-news .news-mast__lede {
  position: relative;
  z-index: 1;
  margin: 0;
  max-width: 56ch;
  font-size: clamp(15px, 2.6vw, 17px);
  line-height: 1.85;
  color: var(--on-dark);
}

.page-news .news-mast__meta {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin-top: calc(var(--baseline) * 6);
  background: var(--line-dark);
  border-top: 1px solid var(--line-dark);
  border-bottom: 1px solid var(--line-dark);
}

.page-news .news-mast__cell {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 14px;
  background: var(--ink);
}

.page-news .news-mast__val {
  font-family: var(--font-mono);
  font-size: clamp(22px, 4vw, 30px);
  font-weight: 600;
  color: var(--gold-light);
  letter-spacing: 0.02em;
}

.page-news .news-mast__key {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--mist);
}

/* ---------- 本期导读 ---------- */
.page-news .news-brief {
  padding: calc(var(--baseline) * 8) 0 calc(var(--baseline) * 9);
  border-bottom: 1px solid var(--line-light);
}

.page-news .news-brief__grid {
  display: grid;
  gap: calc(var(--baseline) * 4);
}

.page-news .news-brief__rail {
  position: relative;
  padding-top: 4px;
}

.page-news .news-brief__watermark {
  position: absolute;
  top: -22px;
  left: -6px;
  font-size: 76px;
  font-weight: 700;
  line-height: 1;
  color: rgba(46, 59, 71, 0.08);
  pointer-events: none;
}

.page-news .news-brief__railtitle {
  position: relative;
  margin: 0 0 8px;
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: clamp(20px, 3vw, 24px);
  letter-spacing: 0.14em;
  color: var(--ink);
}

.page-news .news-brief__railnote {
  margin: 0;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--mist);
}

.page-news .news-brief__media {
  margin-bottom: calc(var(--baseline) * 4);
  border: 1px solid var(--line-light);
}

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

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

.page-news .brief-item {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 12px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line-light);
}

.page-news .brief-item__no {
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--cinnabar);
  padding-top: 4px;
}

.page-news .brief-item__title {
  margin: 0 0 6px;
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: clamp(16px, 2.6vw, 18px);
  line-height: 1.5;
  letter-spacing: 0.02em;
}

.page-news .brief-item__title a {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid rgba(201, 162, 74, 0.5);
  transition: border-color 0.2s ease, color 0.2s ease;
}

.page-news .brief-item__title a:hover,
.page-news .brief-item__title a:focus-visible {
  color: var(--bronze);
  border-bottom-color: var(--cinnabar);
}

.page-news .brief-item__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--graphite);
}

/* ---------- 更新条目 ---------- */
.page-news .news-feed {
  padding: calc(var(--baseline) * 8) 0 calc(var(--baseline) * 9);
}

.page-news .news-feed__grid {
  display: grid;
  gap: calc(var(--baseline) * 4);
}

.page-news .news-feed__railtitle {
  margin: 0 0 8px;
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: 18px;
  letter-spacing: 0.16em;
  color: var(--ink);
}

.page-news .news-feed__railnote {
  margin: 0 0 18px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
}

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

.page-news .news-feed__cats li {
  border-bottom: 1px solid var(--line-light);
}

.page-news .news-feed__cats a {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  padding: 8px 0;
  font-size: 14px;
  color: var(--graphite);
  text-decoration: none;
  transition: color 0.2s ease, padding-left 0.2s ease;
}

.page-news .news-feed__cats a .mono {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--gold);
  letter-spacing: 0.06em;
}

.page-news .news-feed__cats a:hover,
.page-news .news-feed__cats a:focus-visible {
  color: var(--ink);
  padding-left: 6px;
}

.page-news .news-feed__list {
  border-top: 1px solid var(--line-light);
}

.page-news .feed-item {
  position: relative;
  padding: 22px 0 24px;
  border-bottom: 1px solid var(--line-light);
}

.page-news .feed-item::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--gold);
  transition: width 0.35s ease;
}

.page-news .feed-item:hover::before,
.page-news .feed-item:focus-within::before {
  width: 100%;
}

.page-news .feed-item__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}

.page-news .feed-item__no {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--bronze);
  transition: transform 0.25s ease, color 0.25s ease;
}

.page-news .feed-item:hover .feed-item__no {
  transform: translateX(4px);
  color: var(--cinnabar);
}

.page-news .feed-item__time {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--mist);
}

.page-news .feed-item__title {
  margin: 0 0 8px;
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: clamp(17px, 2.8vw, 21px);
  line-height: 1.5;
  letter-spacing: 0.02em;
  color: var(--ink);
}

.page-news .feed-item__desc {
  margin: 0;
  max-width: 62ch;
  font-size: 14px;
  line-height: 1.8;
  color: var(--graphite);
}

/* ---------- 版本时间轴 ---------- */
.page-news .news-timeline {
  padding: calc(var(--baseline) * 9) 0;
}

.page-news .news-sec-head {
  margin-bottom: calc(var(--baseline) * 4);
}

.page-news .news-sec-head__eyebrow {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.24em;
  color: var(--cinnabar);
}

.page-news .news-sec-head__title {
  margin: 0 0 12px;
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: clamp(22px, 4vw, 34px);
  line-height: 1.35;
  letter-spacing: 0.06em;
  color: var(--ink);
}

.page-news .news-sec-head__desc {
  margin: 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--graphite);
}

.page-news .news-sec-head--dark .news-sec-head__eyebrow {
  color: var(--gold-light);
}

.page-news .news-sec-head--dark .news-sec-head__title {
  color: var(--on-dark-strong);
}

.page-news .news-sec-head--dark .news-sec-head__desc {
  color: var(--on-dark);
}

.page-news .news-timeline__media {
  margin-bottom: calc(var(--baseline) * 5);
  border: 1px solid var(--line-dark);
}

.page-news .tl {
  border-top: 1px solid var(--line-dark);
}

.page-news .tl-node {
  border-bottom: 1px solid var(--line-dark);
}

.page-news .tl-node__summary {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 14px;
  padding: 16px 0;
  min-height: 44px;
  cursor: pointer;
  list-style: none;
}

.page-news .tl-node__summary::-webkit-details-marker {
  display: none;
}

.page-news .tl-node__dot {
  width: 7px;
  height: 7px;
  flex: none;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 0 3px rgba(201, 162, 74, 0.18);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.page-news .tl-node[open] .tl-node__dot {
  transform: scale(1.25);
  box-shadow: 0 0 0 5px rgba(201, 162, 74, 0.22);
}

.page-news .tl-node__ver {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--gold-light);
}

.page-news .tl-node__title {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: clamp(15px, 2.6vw, 18px);
  letter-spacing: 0.04em;
  color: var(--on-dark-strong);
}

.page-news .tl-node__summary:hover .tl-node__title,
.page-news .tl-node__summary:focus-visible .tl-node__title {
  color: var(--gold-light);
}

.page-news .tl-node__summary:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 3px;
}

.page-news .tl-node__body {
  padding: 0 0 20px 21px;
  border-left: 1px solid var(--line-dark);
  margin-left: 3px;
}

.page-news .tl-node__body p {
  margin: 0 0 10px;
  max-width: 62ch;
  font-size: 14px;
  line-height: 1.85;
  color: var(--on-dark);
}

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

.page-news .tl-node__list li {
  position: relative;
  padding-left: 16px;
  margin-bottom: 6px;
  font-size: 13px;
  line-height: 1.75;
  color: rgba(244, 239, 228, 0.66);
}

.page-news .tl-node__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 8px;
  height: 1px;
  background: var(--gold);
}

/* ---------- 案例合集 ---------- */
.page-news .news-cases {
  padding: calc(var(--baseline) * 9) 0;
}

.page-news .news-cases__grid {
  display: grid;
  gap: calc(var(--baseline) * 5);
}

.page-news .news-cases__cover .media {
  border: 1px solid var(--line-light);
}

.page-news .news-cases__caption {
  margin: 12px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
}

.page-news .case-list {
  margin: calc(var(--baseline) * 3) 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line-light);
}

.page-news .case-item {
  padding: 18px 0;
  border-bottom: 1px solid var(--line-light);
}

.page-news .case-item__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
}

.page-news .case-item__no {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--bronze);
}

.page-news .case-item__title {
  margin: 0 0 6px;
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: clamp(15px, 2.6vw, 17px);
  line-height: 1.55;
  color: var(--ink);
}

.page-news .case-item__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--graphite);
}

.page-news .news-cases__link {
  margin: calc(var(--baseline) * 4) 0 0;
}

.page-news .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 22px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-decoration: none;
  transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.page-news .btn--ink {
  background: var(--ink);
  color: var(--on-dark-strong);
  border-color: var(--ink);
}

.page-news .btn--ink:hover,
.page-news .btn--ink:focus-visible {
  background: var(--ink-2);
  border-color: var(--gold);
}

.page-news .btn--gold {
  background: var(--gold);
  color: var(--ink);
  border-color: var(--gold);
}

.page-news .btn--gold:hover,
.page-news .btn--gold:focus-visible {
  background: var(--gold-light);
  border-color: var(--gold-light);
}

.page-news .btn--ghost {
  background: transparent;
  color: var(--on-dark-strong);
  border-color: rgba(230, 201, 126, 0.45);
}

.page-news .btn--ghost:hover,
.page-news .btn--ghost:focus-visible {
  border-color: var(--gold);
  color: var(--gold-light);
}

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

/* ---------- 回溯与协助 ---------- */
.page-news .news-backtrack {
  padding: calc(var(--baseline) * 9) 0;
}

.page-news .news-backtrack__grid {
  display: grid;
  gap: calc(var(--baseline) * 5);
}

.page-news .news-backtrack__media {
  margin-bottom: calc(var(--baseline) * 3);
  border: 1px solid var(--line-dark);
}

.page-news .news-backtrack__title {
  margin: 0 0 12px;
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: clamp(17px, 2.8vw, 20px);
  letter-spacing: 0.1em;
  color: var(--on-dark-strong);
}

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

.page-news .news-backtrack__list li {
  position: relative;
  padding: 12px 0 12px 18px;
  border-bottom: 1px solid var(--line-dark);
  font-size: 14px;
  line-height: 1.8;
  color: var(--on-dark);
}

.page-news .news-backtrack__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 21px;
  width: 9px;
  height: 1px;
  background: var(--gold);
}

.page-news .news-backtrack__list a {
  color: var(--gold-light);
  text-decoration: none;
  border-bottom: 1px solid rgba(230, 201, 126, 0.4);
}

.page-news .news-backtrack__list a:hover,
.page-news .news-backtrack__list a:focus-visible {
  border-bottom-color: var(--gold-light);
}

.page-news .news-backtrack__desc {
  margin: 0 0 calc(var(--baseline) * 3);
  font-size: 14px;
  line-height: 1.85;
  color: var(--on-dark);
}

.page-news .news-backtrack__contact {
  margin: 0 0 calc(var(--baseline) * 3);
  padding: 18px;
  border: 1px solid var(--line-dark);
  background: rgba(10, 26, 42, 0.55);
}

.page-news .news-backtrack__contact > div {
  display: grid;
  gap: 4px;
  padding: 10px 0;
  border-bottom: 1px dashed rgba(230, 201, 126, 0.2);
}

.page-news .news-backtrack__contact > div:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-news .news-backtrack__contact > div:first-child {
  padding-top: 0;
}

.page-news .news-backtrack__contact dt {
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--mist);
}

.page-news .news-backtrack__contact dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.6;
  color: var(--on-dark-strong);
  word-break: break-word;
}

.page-news .news-backtrack__contact dd.mono {
  font-family: var(--font-mono);
  letter-spacing: 0.02em;
}

.page-news .news-backtrack__note {
  margin: 0 0 calc(var(--baseline) * 3);
  font-size: 13px;
  line-height: 1.8;
  color: var(--mist);
}

.page-news .news-backtrack__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 0;
}

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

  .page-news .brief-item {
    grid-template-columns: 56px minmax(0, 1fr);
    gap: 18px;
    padding: 20px 0;
  }

  .page-news .news-backtrack__contact > div {
    grid-template-columns: 96px minmax(0, 1fr);
    align-items: baseline;
    gap: 14px;
  }
}

@media (min-width: 960px) {
  .page-news .news-brief__grid {
    grid-template-columns: var(--news-rail) minmax(0, 1fr);
    gap: calc(var(--baseline) * 6);
    align-items: start;
  }

  .page-news .news-brief__rail {
    position: sticky;
    top: 96px;
  }

  .page-news .news-feed__grid {
    grid-template-columns: var(--news-rail) minmax(0, 1fr);
    gap: calc(var(--baseline) * 6);
  }

  .page-news .news-feed__rail {
    position: sticky;
    top: 96px;
    align-self: start;
  }

  .page-news .news-cases__grid {
    grid-template-columns: minmax(0, 320px) minmax(0, 1fr);
    gap: calc(var(--baseline) * 7);
    align-items: start;
  }

  .page-news .news-backtrack__grid {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
    gap: calc(var(--baseline) * 7);
    align-items: start;
  }

  .page-news .news-backtrack__media {
    max-width: 360px;
  }
}

@media (min-width: 1180px) {
  .page-news .news-mast {
    padding-top: calc(var(--baseline) * 7);
    padding-bottom: calc(var(--baseline) * 9);
  }

  .page-news .feed-item {
    padding: 26px 0 28px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .feed-item::before,
  .page-news .feed-item__no,
  .page-news .tl-node__dot,
  .page-news .news-feed__cats a,
  .page-news .btn {
    transition: none;
  }
}