/* ===== 专题中心 / topcis page ===== */
.page-news {
  --cat-version: var(--green);
  --cat-adapt: var(--cyan);
  --cat-data: var(--orange);
  --cat-ops: var(--beacon);
  --news-rail-w: 168px;
  --news-gap: 22px;
  display: block;
}

/* --- 首屏 --- */
.page-news .news-hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
  padding: clamp(26px, 5vw, 56px) 0 clamp(24px, 4vw, 44px);
  border-bottom: 1px solid var(--line);
}

.page-news .news-hero-note {
  order: 2;
  display: flex;
  align-items: center;
}

.page-news .news-hero-body h1 {
  margin: 10px 0 18px;
  font-size: clamp(52px, 12vw, 118px);
  font-weight: 900;
  line-height: 0.9;
  letter-spacing: -0.03em;
  color: var(--ink);
}

.page-news .news-hero-body .lede {
  max-width: 46em;
  margin: 0;
  color: var(--slate);
}

.page-news .news-hero-note .vertical-note {
  color: var(--orange);
  font-weight: 500;
  letter-spacing: 0.16em;
}

@media (min-width: 760px) {
  .page-news .news-hero {
    grid-template-columns: 64px minmax(0, 1fr);
    gap: 28px;
  }
  .page-news .news-hero-note {
    order: 0;
    justify-content: center;
    padding-top: 14px;
  }
  .page-news .news-hero-note .vertical-note {
    writing-mode: vertical-rl;
    transform: rotate(180deg);
  }
  .page-news .news-hero-body h1 {
    width: max-content;
    max-width: 100%;
  }
}

/* --- 主推专题 --- */
.page-news .news-feature {
  padding-top: clamp(32px, 5vw, 64px);
}

.page-news .feature-card {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  background: var(--card);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.page-news .feature-card::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 5px;
  background: linear-gradient(100deg, var(--green) 0 58%, var(--orange) 58% 100%);
}

.page-news .feature-figure {
  margin: 0;
  border-bottom: 1px solid var(--line);
}

.page-news .feature-figure .figure-frame img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 14 / 8;
  object-fit: cover;
}

.page-news .feature-figure .figure-cap {
  padding: 10px 20px;
  border-top: 1px solid var(--line);
  background: var(--paper-2);
  color: var(--slate);
  font-size: 13px;
  letter-spacing: 0.06em;
}

.page-news .feature-text {
  padding: clamp(22px, 3.5vw, 40px);
}

.page-news .feature-num {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: clamp(56px, 9vw, 104px);
  font-weight: 700;
  line-height: 0.85;
  color: transparent;
  -webkit-text-stroke: 1.5px var(--green);
  letter-spacing: -0.04em;
}

.page-news .feature-title {
  margin: 6px 0 16px;
  font-size: clamp(24px, 3.4vw, 38px);
  font-weight: 900;
  line-height: 1.24;
  color: var(--ink);
}

.page-news .feature-text p {
  margin: 0 0 14px;
  color: var(--slate);
  line-height: 1.85;
}

.page-news .feature-points {
  margin: 18px 0 20px;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.page-news .feature-points li {
  position: relative;
  padding: 12px 0 12px 26px;
  border-bottom: 1px solid var(--line);
  color: var(--ink);
  font-size: 15.5px;
  line-height: 1.7;
}

.page-news .feature-points li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 21px;
  width: 12px;
  height: 2px;
  background: var(--orange);
}

.page-news .tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}

@media (min-width: 900px) {
  .page-news .feature-card {
    grid-template-columns: 1.12fr 1fr;
  }
  .page-news .feature-figure {
    border-bottom: 0;
    border-right: 1px solid var(--line);
    display: flex;
    flex-direction: column;
    justify-content: center;
  }
  .page-news .feature-figure .figure-frame img {
    aspect-ratio: 14 / 9;
  }
}

/* --- 列表区 --- */
.page-news .news-stream {
  padding-top: clamp(34px, 5vw, 68px);
  padding-bottom: clamp(34px, 5vw, 68px);
}

.page-news .section-head {
  margin-bottom: clamp(20px, 3vw, 32px);
}

.page-news .news-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
}

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

/* 筛选条 */
.page-news .news-filter {
  display: flex;
  gap: 8px;
  margin-bottom: 24px;
  padding-bottom: 10px;
  overflow-x: auto;
  scrollbar-width: thin;
  border-bottom: 1px solid var(--line);
}

.page-news .news-filter .filter-btn {
  flex: 0 0 auto;
  border-radius: 999px;
  white-space: nowrap;
}

.page-news .news-filter .filter-btn .mono {
  margin-left: 4px;
  font-size: 11px;
  opacity: 0.7;
}

.page-news .news-filter .filter-btn[aria-pressed="true"] {
  background: var(--ink);
  color: var(--paper);
  border-color: var(--ink);
  box-shadow: inset 0 -2px 0 var(--beacon);
}

/* 卡片列表：多列不等高 */
.page-news .news-cards {
  columns: 1;
  column-gap: var(--news-gap);
}

.page-news .news-card {
  position: relative;
  display: block;
  width: 100%;
  break-inside: avoid;
  -webkit-column-break-inside: avoid;
  margin: 0 0 var(--news-gap);
  padding: 20px 20px 20px 24px;
  background: var(--card);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  transition: transform 180ms ease, box-shadow 180ms ease, opacity 180ms ease, border-color 180ms ease;
}

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

.page-news .news-card[data-tags~="adapt"]::before {
  background: var(--cat-adapt);
}

.page-news .news-card[data-tags~="data"]::before {
  background: var(--cat-data);
}

.page-news .news-card[data-tags~="ops"]::before {
  background: var(--cat-ops);
}

.page-news .news-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lift);
  border-color: rgba(11, 18, 32, 0.24);
}

.page-news .news-card:focus-within {
  outline: 2px solid var(--beacon);
  outline-offset: 2px;
}

.page-news .news-card-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin: 0 0 12px;
  color: var(--slate);
  font-size: 12px;
  letter-spacing: 0.06em;
}

.page-news .news-card-tag {
  display: inline-block;
  padding: 3px 9px;
  background: var(--paper-2);
  border-left: 3px solid var(--cat-version);
  color: var(--ink);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.page-news .news-card-tag--adapt {
  border-left-color: var(--cat-adapt);
}

.page-news .news-card-tag--data {
  border-left-color: var(--cat-data);
}

.page-news .news-card-tag--ops {
  border-left-color: var(--green-deep);
}

.page-news .news-card-title {
  margin: 0 0 10px;
  font-size: 19px;
  font-weight: 700;
  line-height: 1.42;
  color: var(--ink);
}

.page-news .news-card-text {
  margin: 0 0 10px;
  color: var(--slate);
  font-size: 15px;
  line-height: 1.78;
}

.page-news .news-card-text:last-child {
  margin-bottom: 0;
}

.page-news .news-card-figure {
  margin: 0 0 14px;
  border: 1px solid var(--line);
  background: var(--ink-2);
  overflow: hidden;
}

.page-news .news-card-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 10 / 7;
  object-fit: cover;
}

.page-news .news-card--tall .news-card-figure img {
  aspect-ratio: 12 / 8;
}

.page-news .filter-count {
  margin: 4px 0 0;
  color: var(--slate);
  font-size: 12px;
  letter-spacing: 0.08em;
}

@media (min-width: 700px) {
  .page-news .news-cards {
    columns: 2;
  }
}

@media (min-width: 1080px) {
  .page-news .news-cards {
    columns: 3;
  }
}

/* --- 右侧时间刻度 --- */
.page-news .news-rail {
  align-self: start;
  padding-top: 4px;
}

.page-news .rail-title {
  margin: 0 0 12px;
  color: var(--orange);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.page-news .news-rail .timeline-track {
  display: flex;
  gap: 14px;
  overflow-x: auto;
  padding-bottom: 8px;
  scrollbar-width: thin;
}

.page-news .news-rail .timeline-node {
  position: relative;
  flex: 0 0 auto;
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 128px;
  padding-left: 20px;
  opacity: 0.45;
  transition: opacity 320ms ease;
}

.page-news .news-rail .timeline-node::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 8px;
  bottom: -14px;
  width: 1px;
  background: var(--line);
}

.page-news .news-rail .timeline-dot {
  position: absolute;
  left: 0;
  top: 6px;
  width: 11px;
  height: 11px;
  border: 2px solid var(--green);
  background: var(--paper-2);
  border-radius: 50%;
}

.page-news .news-rail .timeline-node.is-lit {
  opacity: 1;
}

.page-news .news-rail .timeline-node.is-lit .timeline-dot {
  background: var(--beacon);
  box-shadow: 0 0 0 3px rgba(233, 255, 61, 0.24);
}

.page-news .news-rail .timeline-node--old .timeline-dot {
  border-style: dashed;
  border-color: var(--slate);
}

.page-news .news-rail .timeline-node-title {
  color: var(--ink);
  font-size: 14px;
  font-weight: 700;
}

.page-news .news-rail .timeline-node-meta {
  color: var(--slate);
  font-size: 11px;
  letter-spacing: 0.08em;
}

@media (min-width: 900px) {
  .page-news .news-layout {
    grid-template-columns: minmax(0, 1fr) var(--news-rail-w);
    gap: 0 40px;
    align-items: start;
  }
  .page-news .news-rail {
    position: sticky;
    top: 96px;
  }
  .page-news .news-rail .timeline-track {
    display: block;
    overflow: visible;
    padding-bottom: 0;
  }
  .page-news .news-rail .timeline-node {
    display: block;
    min-width: 0;
    padding: 0 0 30px 22px;
  }
  .page-news .news-rail .timeline-node:last-child::before {
    display: none;
  }
}

/* --- 对照阅读路线 --- */
.page-news .news-routes {
  padding-top: clamp(34px, 5vw, 68px);
  padding-bottom: clamp(34px, 5vw, 68px);
  border-top: 1px solid var(--line);
}

.page-news .routes-lede {
  max-width: 44em;
  margin: 0 0 clamp(22px, 3vw, 34px);
  color: var(--slate);
  line-height: 1.85;
}

.page-news .route-list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

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

.page-news .route-index {
  display: inline-block;
  margin-bottom: 10px;
  padding: 3px 10px;
  background: var(--ink);
  color: var(--beacon);
  font-size: 11px;
  letter-spacing: 0.14em;
}

.page-news .route-title {
  margin: 0 0 8px;
  font-size: 21px;
  font-weight: 700;
  color: var(--ink);
}

.page-news .route-text {
  margin: 0 0 12px;
  max-width: 40em;
  color: var(--slate);
  font-size: 15.5px;
  line-height: 1.8;
}

.page-news .route-link {
  display: inline-block;
  color: var(--green-deep);
  font-weight: 700;
  font-size: 15px;
  text-decoration: none;
  border-bottom: 2px solid var(--green);
  padding-bottom: 2px;
}

.page-news .route-link:hover {
  color: var(--orange);
  border-bottom-color: var(--orange);
}

@media (min-width: 860px) {
  .page-news .route-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0 34px;
    border-top: 0;
  }
  .page-news .route-item {
    padding-top: 0;
    border-top: 3px solid var(--ink);
    padding-top: 20px;
  }
  .page-news .route-item:nth-child(2) {
    border-top-color: var(--orange);
  }
  .page-news .route-item:nth-child(3) {
    border-top-color: var(--green);
  }
}

/* --- 订阅 --- */
.page-news .news-subscribe {
  padding-top: clamp(38px, 5vw, 72px);
  padding-bottom: clamp(38px, 5vw, 72px);
}

.page-news .sub-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 48px);
}

.page-news .sub-copy .section-title {
  color: var(--paper);
  margin-bottom: 16px;
}

.page-news .sub-copy p {
  margin: 0 0 14px;
  max-width: 38em;
  color: rgba(246, 241, 228, 0.72);
  line-height: 1.85;
}

.page-news .sub-sample {
  padding: 22px;
  background: var(--ink-2);
  border: 1px solid var(--line-ink);
  box-shadow: inset 0 0 0 1px rgba(233, 255, 61, 0.06);
}

.page-news .sub-sample-title {
  margin: 0 0 14px;
  color: var(--cyan);
  font-size: 12px;
  letter-spacing: 0.12em;
}

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

.page-news .sub-sample-list li {
  display: flex;
  gap: 12px;
  padding: 11px 0;
  border-bottom: 1px solid var(--line-ink);
  color: rgba(246, 241, 228, 0.86);
  font-size: 15px;
  line-height: 1.7;
}

.page-news .sub-sample-list li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-news .sub-sample-list .mono {
  flex: 0 0 auto;
  color: var(--beacon);
  font-size: 12px;
  letter-spacing: 0.1em;
  padding-top: 4px;
}

@media (min-width: 900px) {
  .page-news .sub-grid {
    grid-template-columns: 1.25fr 1fr;
    align-items: start;
  }
}

/* --- 选题共建 --- */
.page-news .news-partner {
  padding-top: clamp(36px, 5vw, 68px);
  padding-bottom: clamp(36px, 5vw, 68px);
}

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

.page-news .partner-card {
  position: relative;
  padding: 26px 22px 24px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-top: 3px solid var(--green);
}

.page-news .partner-card:nth-child(2) {
  border-top-color: var(--orange);
}

.page-news .partner-card:nth-child(3) {
  border-top-color: var(--ink);
}

.page-news .partner-num {
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 28px;
  font-weight: 700;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1.2px var(--slate);
}

.page-news .partner-card h3 {
  margin: 0 0 10px;
  font-size: 19px;
  font-weight: 700;
  color: var(--ink);
}

.page-news .partner-card p {
  margin: 0;
  color: var(--slate);
  font-size: 15px;
  line-height: 1.8;
}

.page-news .partner-cta {
  margin-top: clamp(24px, 3vw, 34px);
  padding: 22px 24px;
  background: var(--ink);
  border-left: 5px solid var(--beacon);
}

.page-news .partner-cta p {
  margin: 0 0 16px;
  color: rgba(246, 241, 228, 0.84);
  line-height: 1.8;
}

.page-news .partner-cta .btn-row {
  flex-wrap: wrap;
  gap: 12px;
}

.page-news .partner-cta .btn--ghost {
  color: var(--paper);
  border-color: rgba(246, 241, 228, 0.4);
}

.page-news .partner-cta .btn--ghost:hover {
  color: var(--beacon);
  border-color: var(--beacon);
}

@media (min-width: 820px) {
  .page-news .partner-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 24px;
  }
}

/* --- 降低动效偏好 --- */
@media (prefers-reduced-motion: reduce) {
  .page-news .news-card,
  .page-news .news-rail .timeline-node {
    transition: opacity 180ms ease;
  }
  .page-news .news-card:hover {
    transform: none;
  }
}
<<<END>>>