.page-news {
  --pn-accent: var(--orange);
  --pn-sticky: 104px;
  display: block;
}

/* ---------- 专题封面首屏 ---------- */

.page-news .topic-cover {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--grid);
  padding-block: clamp(20px, 4vw, 34px) clamp(34px, 6vw, 66px);
}

.page-news .cover-media {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

.page-news .cover-media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.32;
  filter: saturate(0.8) contrast(1.06);
}

.page-news .cover-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(100deg, var(--bg) 6%, rgba(7, 11, 20, 0.78) 48%, rgba(7, 11, 20, 0.4) 100%),
    radial-gradient(110% 88% at 90% 8%, rgba(162, 75, 255, 0.3), transparent 62%),
    radial-gradient(88% 78% at 2% 98%, rgba(255, 106, 26, 0.24), transparent 64%);
}

.page-news .topic-cover .container {
  position: relative;
  z-index: 1;
}

.page-news .topic-cover .breadcrumbs {
  margin-bottom: clamp(18px, 3vw, 30px);
}

.page-news .cover-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 4vw, 40px);
  align-items: end;
}

.page-news .cover-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(44px, 11vw, 84px);
  line-height: 0.92;
  letter-spacing: -0.02em;
  color: var(--text);
  margin: 0 0 14px;
}

.page-news .cover-sub {
  max-width: 42ch;
  margin: 0 0 18px;
  font-size: clamp(15px, 2.1vw, 17px);
  line-height: 1.75;
  color: var(--dim);
}

.page-news .cover-meta {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.08em;
  color: var(--teal);
}

.page-news .cover-index {
  border: 1px solid var(--grid);
  border-radius: var(--radius-md);
  background: linear-gradient(160deg, rgba(15, 23, 40, 0.94), rgba(15, 23, 40, 0.66));
  box-shadow: var(--shadow-hard);
  padding: 14px 16px 10px;
}

.page-news .cover-index-title {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--dim);
}

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

.page-news .cover-index-list a {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 8px;
  align-items: baseline;
  padding: 9px 4px;
  border-bottom: 1px dashed var(--grid);
  text-decoration: none;
  color: var(--text);
  font-size: 14.5px;
  transition: color 0.18s ease, padding-left 0.18s ease;
}

.page-news .cover-index-list li:last-child a {
  border-bottom: 0;
}

.page-news .cover-index-num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--orange);
}

.page-news .cover-index-list a:hover {
  color: var(--orange);
  padding-left: 10px;
}

/* ---------- 横向栏目带 ---------- */

.page-news .channel-band-wrap {
  position: relative;
  margin-top: clamp(26px, 4vw, 42px);
}

.page-news .channel-band-wrap::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  bottom: 26px;
  width: 72px;
  background: linear-gradient(90deg, rgba(7, 11, 20, 0), var(--bg) 80%);
  pointer-events: none;
}

.page-news .channel-band {
  display: flex;
  gap: 12px;
  overflow-x: auto;
  padding: 4px 78px 12px 0;
  scroll-snap-type: x proximity;
  -webkit-overflow-scrolling: touch;
}

.page-news .channel-band::-webkit-scrollbar {
  height: 6px;
}

.page-news .channel-band::-webkit-scrollbar-track {
  background: var(--grid);
  border-radius: var(--radius-pill);
}

.page-news .channel-band::-webkit-scrollbar-thumb {
  background: var(--purple);
  border-radius: var(--radius-pill);
}

.page-news .channel-card {
  position: relative;
  flex: 0 0 min(282px, 76vw);
  scroll-snap-align: start;
  display: grid;
  gap: 8px;
  padding: 16px 16px 18px;
  border: 1px solid var(--grid);
  border-radius: var(--radius-sm);
  background: var(--panel);
  text-decoration: none;
  color: var(--text);
  transition: border-color 0.18s ease, transform 0.18s ease;
}

.page-news .channel-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 28px;
  height: 3px;
  background: var(--orange);
}

.page-news .channel-card:hover {
  border-color: var(--orange);
  transform: translateY(-3px);
}

.page-news .channel-card-no {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.16em;
  color: var(--dim);
}

.page-news .channel-card-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 21px;
  letter-spacing: -0.01em;
}

.page-news .channel-card-desc {
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--dim);
}

.page-news .band-hint {
  margin: 4px 0 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--dim);
}

/* ---------- 主体外壳与侧栏索引 ---------- */

.page-news .topics-shell {
  padding-block: clamp(26px, 5vw, 50px) clamp(40px, 7vw, 78px);
}

.page-news .side-index {
  display: none;
}

.page-news .topics-stream {
  min-width: 0;
}

/* ---------- 栏目区块 ---------- */

.page-news .channel-block {
  --pn-accent: var(--orange);
  padding-block: clamp(26px, 4vw, 42px);
  border-top: 1px solid var(--grid);
  scroll-margin-top: var(--pn-sticky);
}

.page-news .channel-block:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-news .channel-block[data-accent="purple"] {
  --pn-accent: var(--purple);
}

.page-news .channel-block[data-accent="teal"] {
  --pn-accent: var(--teal);
}

.page-news .channel-block[data-accent="amber"] {
  --pn-accent: var(--amber);
}

.page-news .channel-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  column-gap: 14px;
  row-gap: 6px;
  align-items: baseline;
  margin-bottom: 20px;
}

.page-news .channel-no {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--pn-accent);
}

.page-news .channel-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(24px, 5vw, 34px);
  letter-spacing: -0.02em;
  line-height: 1.1;
  color: var(--text);
}

.page-news .channel-desc {
  grid-column: 1 / -1;
  margin: 0;
  max-width: 60ch;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--dim);
}

.page-news .channel-foot {
  margin: 18px 0 0;
  font-size: 14px;
  color: var(--dim);
}

.page-news .channel-foot a {
  color: var(--info);
  text-decoration: none;
  border-bottom: 1px solid rgba(58, 141, 255, 0.4);
}

.page-news .channel-foot a:hover {
  color: var(--orange);
  border-bottom-color: var(--orange);
}

/* ---------- 本期看点 ---------- */

.page-news .pin-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

.page-news .pin-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 18px;
  border: 1px solid var(--grid);
  border-left: 3px solid var(--orange);
  border-radius: var(--radius-xs);
  background: linear-gradient(160deg, rgba(15, 23, 40, 0.95), rgba(15, 23, 40, 0.6));
  text-decoration: none;
  color: var(--text);
  transition: border-color 0.18s ease, transform 0.18s ease, box-shadow 0.18s ease;
}

.page-news .pin-card:nth-child(2) {
  border-left-color: var(--purple);
}

.page-news .pin-card:nth-child(3) {
  border-left-color: var(--teal);
}

.page-news .pin-card:hover {
  transform: translateY(-3px);
  border-color: var(--purple);
  box-shadow: var(--shadow-hard);
}

.page-news .pin-card .tag {
  align-self: flex-start;
}

.page-news .pin-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 20px;
  line-height: 1.32;
  letter-spacing: -0.01em;
  color: var(--text);
}

.page-news .pin-summary {
  margin: 0;
  flex: 1;
  font-size: 14px;
  line-height: 1.75;
  color: var(--dim);
}

.page-news .pin-go {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--orange);
}

/* ---------- 图文分栏 ---------- */

.page-news .channel-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 22px;
}

.page-news .channel-figure {
  margin: 0;
  border: 1px solid var(--grid);
  border-radius: var(--radius-sm);
  background: var(--panel);
  overflow: hidden;
}

.page-news .channel-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(0.88);
}

.page-news .channel-figure figcaption {
  padding: 12px 14px 14px;
  border-top: 1px solid var(--grid);
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.7;
  color: var(--dim);
}

/* ---------- 条目列表 ---------- */

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

.page-news .entry {
  position: relative;
  border-bottom: 1px solid var(--grid);
}

.page-news .entry::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--pn-accent);
  transform: scaleY(0);
  transform-origin: top center;
  transition: transform 0.18s ease;
}

.page-news .entry:hover::before {
  transform: scaleY(1);
}

.page-news .entry-body {
  padding: 15px 6px 15px 18px;
  transition: background-color 0.18s ease;
}

.page-news .entry:hover .entry-body {
  background: rgba(255, 255, 255, 0.022);
}

.page-news .entry-index {
  display: block;
  margin-bottom: 5px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.16em;
  color: var(--pn-accent);
}

.page-news .entry-title {
  margin: 0 0 6px;
  font-size: 16.5px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--text);
}

.page-news .entry-summary {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--dim);
}

.page-news .entry-more {
  margin: 0;
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--text);
  transition: max-height 0.24s ease, opacity 0.24s ease, margin-top 0.24s ease;
}

.page-news .entry:hover .entry-more {
  max-height: 140px;
  opacity: 1;
  margin-top: 9px;
}

/* ---------- 版本更新卡片 ---------- */

.page-news .release-list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
}

.page-news .release-item {
  padding: 15px 16px;
  border: 1px solid var(--grid);
  border-left: 3px solid var(--teal);
  border-radius: var(--radius-xs);
  background: var(--panel);
  transition: border-color 0.18s ease, transform 0.18s ease;
}

.page-news .release-item:hover {
  transform: translateY(-3px);
  border-color: var(--teal);
}

.page-news .release-ver {
  display: inline-block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--teal);
}

.page-news .release-title {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--text);
}

.page-news .release-desc {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--dim);
}

/* ---------- 追踪技巧 ---------- */

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

.page-news .tip {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  gap: 14px;
  padding: 16px 0;
  border-bottom: 1px dashed var(--grid);
}

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

.page-news .tip-no {
  font-family: var(--font-mono);
  font-size: 21px;
  font-weight: 600;
  line-height: 1.1;
  color: var(--amber);
}

.page-news .tip-title {
  margin: 0 0 6px;
  font-size: 16.5px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--text);
}

.page-news .tip-text {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--dim);
}

/* ---------- 栏目与订阅 ---------- */

.page-news .column-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

.page-news .column-card {
  position: relative;
  overflow: hidden;
  display: grid;
  gap: 8px;
  padding: 18px;
  border: 1px solid var(--grid);
  border-radius: var(--radius-sm);
  background: linear-gradient(180deg, rgba(15, 23, 40, 0.95), rgba(15, 23, 40, 0.6));
  transition: border-color 0.18s ease, transform 0.18s ease;
}

.page-news .column-card:hover {
  border-color: var(--purple);
  transform: translateY(-3px);
}

.page-news .column-watermark {
  position: absolute;
  right: 10px;
  bottom: 2px;
  font-family: var(--font-mono);
  font-size: 54px;
  font-weight: 600;
  line-height: 1;
  color: rgba(162, 75, 255, 0.14);
  pointer-events: none;
}

.page-news .column-name {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 20px;
  letter-spacing: -0.01em;
  color: var(--text);
}

.page-news .column-rhythm {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--purple);
}

.page-news .column-text {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--dim);
}

.page-news .next-step {
  margin-top: 22px;
  padding: 18px 18px 20px;
  border: 1px solid var(--grid);
  border-top: 3px solid var(--orange);
  border-radius: var(--radius-xs);
  background: rgba(15, 23, 40, 0.6);
}

.page-news .next-step-text {
  margin: 0 0 12px;
  font-size: 14.5px;
  color: var(--text);
}

.page-news .next-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-news .next-link {
  display: inline-block;
  padding: 8px 14px;
  border: 1px solid var(--grid);
  border-radius: var(--radius-pill);
  font-size: 13.5px;
  color: var(--text);
  text-decoration: none;
  transition: border-color 0.18s ease, color 0.18s ease, background-color 0.18s ease;
}

.page-news .next-link:hover {
  border-color: var(--orange);
  color: var(--orange);
  background: rgba(255, 106, 26, 0.08);
}

/* ---------- 响应式 ---------- */

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

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

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

@media (min-width: 860px) {
  .page-news .channel-body--split {
    grid-template-columns: minmax(0, 1fr) minmax(0, 320px);
    align-items: start;
  }

  .page-news .channel-figure {
    position: sticky;
    top: var(--pn-sticky);
  }
}

@media (min-width: 900px) {
  .page-news .cover-grid {
    grid-template-columns: minmax(0, 1.42fr) minmax(0, 0.58fr);
    gap: clamp(26px, 4vw, 48px);
  }

  .page-news .cover-lead {
    padding-top: clamp(28px, 6vw, 74px);
  }

  .page-news .cover-index {
    transform: translateY(-16px);
  }
}

@media (min-width: 1000px) {
  .page-news .pin-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-news .column-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 1080px) {
  .page-news .topics-shell {
    display: grid;
    grid-template-columns: 168px minmax(0, 1fr);
    column-gap: 44px;
    align-items: start;
  }

  .page-news .side-index {
    display: block;
    position: sticky;
    top: var(--pn-sticky);
  }

  .page-news .side-index .index-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    gap: 2px;
  }

  .page-news .side-index .index-link {
    display: block;
    padding: 7px 10px;
    border-left: 2px solid var(--grid);
    font-size: 13.5px;
    color: var(--dim);
    text-decoration: none;
    transition: color 0.18s ease, border-color 0.18s ease, padding-left 0.18s ease;
  }

  .page-news .side-index .index-link:hover,
  .page-news .side-index .index-link[aria-current] {
    color: var(--orange);
    border-left-color: var(--orange);
    padding-left: 14px;
  }
}

@media (hover: none) {
  .page-news .entry-more {
    max-height: none;
    opacity: 1;
    margin-top: 9px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .channel-card,
  .page-news .pin-card,
  .page-news .release-item,
  .page-news .column-card,
  .page-news .next-link {
    transition: none;
  }

  .page-news .channel-card:hover,
  .page-news .pin-card:hover,
  .page-news .release-item:hover,
  .page-news .column-card:hover {
    transform: none;
  }
}
</main>