.page-news {
  --news-rail: 196px;
  background: var(--ink-900);
  color: var(--paper);
  font-family: var(--font-body);
  padding-bottom: 80px;
  overflow-x: hidden;
}

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

.page-news .news-crumbs .breadcrumb {
  margin: 0;
}

/* ---------- 首屏 ---------- */

.page-news .news-head {
  margin-top: 18px;
  padding: 40px 0 0;
  background:
    radial-gradient(circle at 84% 14%, rgba(56, 232, 210, .12), transparent 48%),
    linear-gradient(180deg, var(--ink-850), var(--ink-900));
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-news .news-head-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
  padding-bottom: 40px;
}

.page-news .news-head-copy h1 {
  font-family: var(--font-head);
  font-weight: 800;
  letter-spacing: -.02em;
  line-height: 1.14;
  font-size: clamp(30px, 5.2vw, 52px);
  margin: 14px 0 18px;
  max-width: 16em;
}

.page-news .news-lede {
  font-size: 16px;
  line-height: 1.85;
  color: var(--mist);
  margin: 0;
  max-width: 34em;
}

.page-news .news-head-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 24px;
}

.page-news .news-head-fig {
  margin: 0;
  border: 1px solid var(--line);
  box-shadow: var(--shadow-paper);
}

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

/* ---------- 横向主题带 ---------- */

.page-news .news-tax {
  background:
    linear-gradient(90deg, transparent, rgba(56, 232, 210, .07) 50%, transparent),
    repeating-linear-gradient(90deg, var(--line-soft) 0 1px, transparent 1px 96px);
  border-bottom: 1px solid var(--line);
}

.page-news .news-tax-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
  padding-top: 14px;
  padding-bottom: 14px;
}

.page-news .news-tax-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--cyan);
  text-transform: uppercase;
}

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

.page-news .news-tax-list a {
  display: inline-block;
  padding: 6px 12px;
  border: 1px solid var(--line);
  color: var(--mist);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  text-decoration: none;
  background: rgba(8, 18, 38, .55);
  transition: color .2s ease, border-color .2s ease, background-color .2s ease;
}

.page-news .news-tax-list a:hover,
.page-news .news-tax-list a:focus-visible {
  color: var(--cyan);
  border-color: var(--cyan-dim);
  background: rgba(56, 232, 210, .09);
}

/* ---------- 主体栅格 ---------- */

.page-news .news-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 44px;
  padding-top: 52px;
}

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

.page-news .news-section + .news-section {
  margin-top: 8px;
}

.page-news .news-section-head {
  margin-bottom: 24px;
}

.page-news .news-section-head h2 {
  font-family: var(--font-head);
  font-weight: 800;
  letter-spacing: -.015em;
  font-size: clamp(22px, 3.4vw, 32px);
  line-height: 1.25;
  margin: 0 0 10px;
  padding-left: 14px;
  border-left: 3px solid var(--cyan);
}

.page-news .news-section-head p {
  margin: 0 0 0 17px;
  color: var(--mist);
  font-size: 15px;
  line-height: 1.8;
  max-width: 40em;
}

/* ---------- 研究板摘要卡 ---------- */

.page-news .news-board {
  position: relative;
  border: 1px solid var(--line);
  background: linear-gradient(180deg, var(--ink-800), var(--ink-850));
  box-shadow: var(--shadow-paper);
  padding: 24px 22px 22px;
  transition: transform .22s ease, box-shadow .22s ease, border-color .22s ease;
}

.page-news .news-board::before {
  content: "";
  position: absolute;
  top: -1px;
  left: -1px;
  right: -1px;
  height: 3px;
  background: linear-gradient(90deg, var(--cyan), var(--cyan-dim) 42%, transparent);
}

.page-news .news-board:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-paper-lift);
  border-color: var(--cyan-dim);
}

.page-news .news-board-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
}

.page-news .news-board-no {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--cyan);
}

.page-news .news-board h3 {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(19px, 2.6vw, 25px);
  line-height: 1.35;
  letter-spacing: -.01em;
  margin: 0 0 12px;
}

.page-news .news-board-text {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist);
}

.page-news .news-details {
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px dashed var(--line);
}

.page-news .news-details summary {
  cursor: pointer;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--cyan);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

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

.page-news .news-details summary::after {
  content: "+";
  font-size: 14px;
}

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

.page-news .news-details summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.page-news .news-details-body {
  padding-top: 12px;
  border-left: 2px solid var(--line);
  margin-left: 4px;
  padding-left: 16px;
}

.page-news .news-details-body ul {
  margin: 0 0 10px;
  padding-left: 18px;
  color: var(--mist);
  font-size: 15px;
  line-height: 1.85;
}

.page-news .news-details-body li {
  margin-bottom: 6px;
}

.page-news .news-details-body p {
  margin: 0;
  font-size: 14px;
  color: var(--coral-soft);
  line-height: 1.75;
}

.page-news .news-path {
  display: inline-block;
  margin-top: 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  padding-bottom: 3px;
  transition: color .2s ease, border-color .2s ease;
}

.page-news .news-path:hover,
.page-news .news-path:focus-visible {
  color: var(--paper);
  border-color: var(--cyan);
}

/* ---------- 短记录列表 ---------- */

.page-news .news-list {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
}

.page-news .news-item {
  position: relative;
  border-top: 1px solid var(--line-soft);
  padding: 18px 0 18px 0;
  transition: background-color .2s ease;
}

.page-news .news-item:hover {
  background: rgba(18, 36, 69, .45);
}

.page-news .news-item-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--mist);
  margin-bottom: 8px;
}

.page-news .news-item-no {
  color: var(--cyan-dim);
}

.page-news .news-item-title {
  display: block;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 17px;
  line-height: 1.5;
  color: var(--paper);
  text-decoration: none;
  transition: color .2s ease;
}

.page-news .news-item-title:hover,
.page-news .news-item-title:focus-visible {
  color: var(--cyan);
}

.page-news .news-item-text {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
  max-width: 46em;
}

.page-news .news-item-go {
  display: inline-block;
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--cyan);
  opacity: 0;
  transform: translateX(-4px);
  transition: opacity .22s ease, transform .22s ease;
}

.page-news .news-item:hover .news-item-go,
.page-news .news-item:focus-within .news-item-go {
  opacity: 1;
  transform: translateX(0);
}

/* ---------- 轨道分隔线 ---------- */

.page-news .news-rule {
  border: 0;
  height: 1px;
  margin: 46px 0;
  background: repeating-linear-gradient(90deg, var(--line) 0 10px, transparent 10px 20px);
}

/* ---------- 专题系列 ---------- */

.page-news .news-series {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 20px;
}

.page-news .series-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--cyan-dim);
  background: linear-gradient(180deg, rgba(18, 36, 69, .72), rgba(11, 24, 48, .5));
  padding: 22px 20px;
  transition: border-color .22s ease, transform .22s ease;
}

.page-news .series-item:hover {
  border-left-color: var(--cyan);
  transform: translateY(-2px);
}

.page-news .series-no {
  font-family: var(--font-mono);
  font-size: 30px;
  line-height: 1;
  letter-spacing: .04em;
  color: var(--cyan);
}

.page-news .series-body h3 {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 20px;
  letter-spacing: -.01em;
  margin: 0 0 10px;
}

.page-news .series-desc {
  margin: 0 0 14px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
}

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

.page-news .series-list li {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: baseline;
  padding: 10px 0;
  border-top: 1px solid var(--line-soft);
  font-size: 14px;
  line-height: 1.75;
  color: var(--paper);
}

.page-news .series-code {
  flex: none;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--coral);
}

.page-news .news-fig {
  margin: 18px 0 0;
  border: 1px solid var(--line);
}

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

/* ---------- 场景案例 ---------- */

.page-news .news-fig--cases {
  margin: 0 0 26px;
  box-shadow: var(--shadow-paper);
}

.page-news .case-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
}

.page-news .case-item {
  border: 1px solid var(--line);
  background: var(--ink-850);
  padding: 18px 18px 16px;
  transition: border-color .22s ease, background-color .22s ease;
}

.page-news .case-item:hover {
  border-color: var(--cyan-dim);
  background: var(--ink-800);
}

.page-news .case-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 12px;
  margin-bottom: 12px;
  padding-bottom: 10px;
  border-bottom: 1px dashed var(--line);
}

.page-news .case-no {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--cyan);
}

.page-news .case-head h3 {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 17px;
  margin: 0;
  flex: 1 1 auto;
  min-width: 0;
}

.page-news .case-line {
  margin: 0 0 8px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
}

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

.page-news .case-line strong {
  color: var(--paper);
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: .02em;
}

/* ---------- 更新节奏 ---------- */

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

.page-news .cadence-cell {
  border: 1px solid var(--line);
  background:
    repeating-linear-gradient(90deg, rgba(27, 51, 88, .35) 0 1px, transparent 1px 72px),
    var(--ink-850);
  padding: 20px 18px;
}

.page-news .cadence-num {
  display: block;
  font-family: var(--font-mono);
  font-size: 24px;
  line-height: 1.2;
  letter-spacing: -.01em;
  color: var(--coral);
  margin-bottom: 8px;
}

.page-news .cadence-title {
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 15px;
  color: var(--paper);
}

.page-news .cadence-text {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
}

.page-news .news-outro {
  margin-top: 30px;
  padding: 24px 20px;
  border: 1px solid var(--line);
  border-top: 3px solid var(--coral);
  background: linear-gradient(180deg, rgba(255, 106, 69, .08), transparent 70%), var(--ink-850);
}

.page-news .news-outro p {
  margin: 0 0 18px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--paper);
  max-width: 38em;
}

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

/* ---------- 右侧索引 ---------- */

.page-news .news-rail {
  border: 1px solid var(--line);
  background: var(--ink-850);
  padding: 20px 18px;
}

.page-news .news-rail-title {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--mist);
  margin: 0 0 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line-soft);
}

.page-news .news-rail-title + .news-rail-list,
.page-news .news-rail-list + .news-rail-title {
  margin-top: 22px;
}

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

.page-news .news-rail-list li + li {
  margin-top: 10px;
}

.page-news .news-rail-list a {
  display: block;
  font-size: 13px;
  line-height: 1.5;
  color: var(--mist);
  text-decoration: none;
  padding-left: 12px;
  border-left: 2px solid transparent;
  transition: color .2s ease, border-color .2s ease;
}

.page-news .news-rail-list a:hover,
.page-news .news-rail-list a:focus-visible {
  color: var(--cyan);
  border-left-color: var(--cyan);
}

.page-news .news-tagcloud {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 12px;
}

.page-news .news-tagcloud a {
  color: var(--mist);
  font-size: 12px;
  line-height: 1.5;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .2s ease, border-color .2s ease;
}

.page-news .news-tagcloud a.w2 {
  font-size: 13px;
  color: var(--coral-soft);
}

.page-news .news-tagcloud a.w3 {
  font-size: 15px;
  font-weight: 700;
  color: var(--paper);
}

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

.page-news .news-rail-note {
  margin: 22px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--line-soft);
  font-size: 12px;
  line-height: 1.8;
  color: var(--mist);
}

.page-news .news-rail-note a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
}

/* ---------- 焦点可见性 ---------- */

.page-news a:focus-visible,
.page-news summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

/* ---------- 断点 ---------- */

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

  .page-news .cadence-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-news .news-head-grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 1fr);
    align-items: end;
    gap: 48px;
    padding-bottom: 48px;
  }

  .page-news .news-series {
    gap: 22px;
  }

  .page-news .series-item {
    grid-template-columns: 74px minmax(0, 1fr);
    align-items: start;
    padding: 26px 24px;
  }

  .page-news .series-no {
    font-size: 34px;
    padding-top: 2px;
  }

  .page-news .cadence-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 1000px) {
  .page-news .news-body {
    grid-template-columns: minmax(0, 1fr) var(--news-rail);
    gap: 56px;
    align-items: start;
  }

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

  .page-news .case-list {
    gap: 18px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .news-board,
  .page-news .series-item,
  .page-news .news-item-go,
  .page-news .news-item,
  .page-news .case-item,
  .page-news .news-path {
    transition: none;
  }

  .page-news .news-board:hover,
  .page-news .series-item:hover {
    transform: none;
  }

  .page-news .news-item-go {
    opacity: 1;
    transform: none;
  }
}