.page-news {
  --news-line: rgba(134, 167, 157, 0.30);
  --news-line-soft: rgba(134, 167, 157, 0.16);
  --news-glow: rgba(70, 224, 200, 0.10);
  color: var(--paper);
  padding-bottom: clamp(48px, 8vw, 96px);
}

.page-news a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--t-fast) var(--ease), color var(--t-fast) var(--ease);
}

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

/* ---------- 面包屑 ---------- */
.page-news__crumbs {
  padding: 24px 0 8px;
}

.page-news__crumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--sage);
}

.page-news__crumbs li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--sage);
  opacity: 0.6;
}

.page-news__crumbs a {
  color: var(--sage);
}

.page-news__crumbs [aria-current="page"] {
  color: var(--paper);
}

/* ---------- 首屏 ---------- */
.page-news__hero {
  display: grid;
  gap: 28px;
  padding: 12px 0 clamp(36px, 6vw, 64px);
  border-bottom: 1px solid var(--news-line);
}

.page-news__hero-text h1 {
  font-size: clamp(30px, 6vw, 52px);
  line-height: 1.1;
  letter-spacing: -0.02em;
  font-weight: 900;
  margin: 14px 0 18px;
  max-width: 20ch;
}

.page-news__lead {
  font-size: 16px;
  line-height: 1.78;
  color: var(--paper);
  opacity: 0.92;
  max-width: 46ch;
  margin: 0 0 22px;
}

.page-news__hero-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 28px;
  list-style: none;
  padding: 14px 0;
  margin: 0 0 22px;
  border-top: 1px solid var(--news-line-soft);
  border-bottom: 1px solid var(--news-line-soft);
}

.page-news__hero-facts li {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.page-news__fact-num {
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 700;
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
}

.page-news__fact-txt {
  font-size: 13px;
  color: var(--sage);
  letter-spacing: 0.02em;
}

.page-news__hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-news__hero-actions .og-btn {
  border-bottom: none;
}

.page-news__hero-fig {
  margin: 0;
  position: relative;
  border: 1px solid var(--news-line);
  background: var(--ink-deep);
  overflow: hidden;
}

.page-news__hero-fig::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(160deg, rgba(46, 127, 107, 0.18), rgba(70, 224, 200, 0.05) 60%, transparent 85%);
  pointer-events: none;
}

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

.page-news__hero-fig figcaption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 10px 14px;
  font-size: 12px;
  color: var(--manila);
  background: rgba(11, 43, 36, 0.82);
  border-top: 1px solid var(--news-line);
}

/* ---------- 概览统计 ---------- */
.page-news__overview {
  padding: clamp(36px, 6vw, 56px) 0;
  border-bottom: 1px solid var(--news-line);
}

.page-news__overview-head h2 {
  font-size: clamp(22px, 3.4vw, 30px);
  line-height: 1.2;
  letter-spacing: -0.01em;
  margin: 12px 0 12px;
}

.page-news__overview-sum {
  margin: 0 0 24px;
  max-width: 56ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--sage);
}

.page-news__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  list-style: none;
  margin: 0;
  padding: 0;
  background: var(--news-line);
  border: 1px solid var(--news-line);
}

.page-news__stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 20px 16px;
  background: var(--ink);
}

.page-news__stat--signal {
  background: var(--moss);
}

.page-news__stat-num {
  font-family: var(--font-mono);
  font-size: clamp(34px, 7vw, 48px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
}

.page-news__stat--signal .page-news__stat-num {
  color: var(--orange);
}

.page-news__stat-label {
  font-size: 14px;
  color: var(--paper);
}

.page-news__stat-note {
  font-size: 12px;
  color: var(--sage);
  letter-spacing: 0.02em;
}

/* ---------- 入口路径 ---------- */
.page-news__path {
  padding: clamp(36px, 6vw, 56px) 0;
  border-bottom: 1px solid var(--news-line);
}

.page-news__path-head h2 {
  font-size: clamp(22px, 3.6vw, 32px);
  line-height: 1.22;
  letter-spacing: -0.01em;
  margin: 12px 0 24px;
  max-width: 24ch;
}

.page-news__path-body {
  display: grid;
  gap: 26px;
}

.page-news__path-copy p {
  font-size: 15px;
  line-height: 1.78;
  color: var(--paper);
  opacity: 0.9;
  margin: 0 0 14px;
  max-width: 58ch;
}

.page-news__path-copy a {
  color: var(--cyan);
}

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

.page-news__path-steps li {
  display: flex;
  gap: 14px;
  align-items: baseline;
  padding: 12px 0;
  border-bottom: 1px dashed var(--news-line-soft);
  font-size: 14px;
  color: var(--paper);
}

.page-news__step-no {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--orange);
  letter-spacing: 0.08em;
  flex: 0 0 auto;
}

.page-news__path-fig {
  margin: 0;
  border: 1px solid var(--news-line);
  background: var(--ink-deep);
}

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

.page-news__path-fig figcaption {
  padding: 10px 14px;
  font-size: 12px;
  color: var(--sage);
  border-top: 1px solid var(--news-line);
}

.page-news__path-svg {
  display: block;
  width: 100%;
  height: auto;
  margin-top: 26px;
  overflow: visible;
}

/* ---------- 条目列表 ---------- */
.page-news__log {
  padding: clamp(36px, 6vw, 56px) 0;
  border-bottom: 1px solid var(--news-line);
}

.page-news__log-head h2 {
  font-size: clamp(22px, 3.6vw, 32px);
  line-height: 1.22;
  letter-spacing: -0.01em;
  margin: 12px 0 10px;
}

.page-news__log-note {
  margin: 0 0 26px;
  font-size: 14px;
  color: var(--sage);
  max-width: 52ch;
}

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

.page-news__log-item {
  display: grid;
  grid-template-columns: 76px minmax(0, 1fr);
  gap: 12px;
  padding: 16px 0;
  border-bottom: 1px dashed var(--news-line-soft);
  position: relative;
}

.page-news__log-time {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding-top: 3px;
  position: relative;
}

.page-news__log-time::before {
  content: "";
  position: absolute;
  left: -8px;
  top: 10px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 3px rgba(70, 224, 200, 0.14);
}

.page-news__log-phase {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--cyan);
}

.page-news__log-week {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  color: var(--sage);
}

.page-news__log-body {
  min-width: 0;
}

.page-news__log-summary {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 12px;
  cursor: pointer;
  list-style: none;
  padding: 4px 0;
  outline-offset: 4px;
}

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

.page-news__log-summary::marker {
  content: "";
}

.page-news__log-summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 4px;
}

.page-news__log-title {
  font-size: 15px;
  font-weight: 700;
  line-height: 1.45;
  color: var(--paper);
  flex: 1 1 220px;
  min-width: 0;
  border-bottom: 1px solid transparent;
  transition: border-color var(--t-fast) var(--ease);
}

.page-news__log-summary:hover .page-news__log-title {
  border-bottom-color: var(--cyan);
}

.page-news__log-tick {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--sage);
  letter-spacing: 0.04em;
  flex: 0 0 auto;
  padding: 2px 8px;
  border: 1px solid var(--news-line);
  border-radius: 999px;
}

.page-news__log-detail {
  padding: 10px 0 4px;
}

.page-news__log-detail p {
  margin: 0 0 8px;
  font-size: 14px;
  line-height: 1.72;
  color: var(--paper);
  opacity: 0.84;
  max-width: 62ch;
}

.page-news__log-meta {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.03em;
  color: var(--sage);
  opacity: 1;
}

.page-news__log-meta a {
  color: var(--cyan);
}

.page-news__tag {
  display: inline-block;
  font-size: 11px;
  letter-spacing: 0.08em;
  padding: 3px 10px;
  border-radius: 999px;
  border: 1px solid currentColor;
  background: transparent;
  flex: 0 0 auto;
  white-space: nowrap;
  line-height: 1.5;
}

.page-news__tag--cyan {
  color: var(--cyan);
}

.page-news__tag--signal {
  color: var(--orange);
}

.page-news__tag--sage {
  color: var(--sage);
}

.page-news__tag--alert {
  color: var(--alert);
}

.page-news__log-item--media {
  display: block;
  padding: 22px 0;
}

.page-news__log-fig {
  margin: 0;
  border: 1px solid var(--news-line);
  background: var(--ink-deep);
}

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

.page-news__log-fig figcaption {
  padding: 10px 14px;
  font-size: 12px;
  color: var(--manila);
  border-top: 1px solid var(--news-line);
}

/* ---------- 标签说明 ---------- */
.page-news__legend {
  padding: clamp(36px, 6vw, 56px) 0;
  border-bottom: 1px solid var(--news-line);
}

.page-news__legend h2 {
  font-size: clamp(22px, 3.6vw, 32px);
  line-height: 1.22;
  letter-spacing: -0.01em;
  margin: 12px 0 26px;
}

.page-news__legend-grid {
  display: grid;
  gap: 14px;
}

.page-news__legend-card {
  padding: 20px 18px;
  border: 1px solid var(--news-line);
  background: rgba(23, 69, 59, 0.28);
  display: flex;
  flex-direction: column;
  gap: 10px;
  align-items: flex-start;
}

.page-news__legend-card h3 {
  font-size: 17px;
  line-height: 1.4;
  margin: 0;
  color: var(--paper);
  font-weight: 700;
}

.page-news__legend-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--sage);
}

.page-news__legend-card--tip {
  background: var(--ink-deep);
  border-color: var(--cyan);
}

.page-news__legend-card--tip p {
  color: var(--paper);
  opacity: 0.86;
}

.page-news__legend-card--tip .og-btn {
  margin-top: 4px;
  border-bottom: none;
}

/* ---------- 回溯 ---------- */
.page-news__history {
  padding: clamp(36px, 6vw, 56px) 0 0;
}

.page-news__history-grid {
  display: grid;
  gap: 26px;
}

.page-news__history-fig {
  margin: 0;
  border: 1px solid var(--news-line);
  background: var(--ink-deep);
}

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

.page-news__history-fig figcaption {
  padding: 10px 14px;
  font-size: 12px;
  color: var(--sage);
  border-top: 1px solid var(--news-line);
}

.page-news__history-copy h2 {
  font-size: clamp(22px, 3.6vw, 32px);
  line-height: 1.22;
  letter-spacing: -0.01em;
  margin: 12px 0 16px;
}

.page-news__history-copy p {
  font-size: 15px;
  line-height: 1.78;
  color: var(--paper);
  opacity: 0.9;
  margin: 0 0 14px;
  max-width: 58ch;
}

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

.page-news__history-list li {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 14px;
  padding: 12px 0;
  border-bottom: 1px dashed var(--news-line-soft);
  font-size: 13.5px;
  color: var(--paper);
  opacity: 0.88;
}

.page-news__history-k {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--orange);
  flex: 0 0 92px;
}

.page-news__history-cta {
  font-size: 14px;
  color: var(--sage);
}

.page-news__history-cta a {
  color: var(--cyan);
}

/* ---------- 窄屏细节 ---------- */
@media (max-width: 479px) {
  .page-news__log-item {
    grid-template-columns: 64px minmax(0, 1fr);
    gap: 10px;
  }

  .page-news__log-tick {
    font-size: 10px;
  }

  .page-news__hero-facts {
    gap: 10px 18px;
  }

  .page-news__history-k {
    flex-basis: 100%;
  }
}

/* ---------- 平板 ---------- */
@media (min-width: 640px) {
  .page-news__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

  .page-news__path-steps {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    border-top: none;
    gap: 12px;
  }

  .page-news__path-steps li {
    flex-direction: column;
    gap: 8px;
    padding: 16px 14px;
    border: 1px solid var(--news-line);
    border-bottom: 1px solid var(--news-line);
    background: rgba(23, 69, 59, 0.22);
  }

  .page-news__log-item {
    grid-template-columns: 96px minmax(0, 1fr);
    gap: 18px;
  }

  .page-news__log-title {
    font-size: 16px;
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 900px) {
  .page-news__hero {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: end;
    gap: 40px;
  }

  .page-news__hero-fig {
    align-self: stretch;
  }

  .page-news__hero-fig img {
    height: 100%;
    min-height: 340px;
  }

  .page-news__overview {
    display: grid;
    grid-template-columns: minmax(0, 0.42fr) minmax(0, 0.58fr);
    gap: 40px;
    align-items: start;
  }

  .page-news__overview-sum {
    margin-bottom: 0;
  }

  .page-news__path-body {
    grid-template-columns: minmax(0, 0.58fr) minmax(0, 0.42fr);
    gap: 36px;
    align-items: start;
  }

  .page-news__path-copy {
    order: 2;
  }

  .page-news__path-fig {
    order: 1;
  }

  .page-news__legend-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
  }

  .page-news__legend-card--tip {
    grid-column: span 3;
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px 20px;
  }

  .page-news__legend-card--tip h3 {
    flex: 0 0 auto;
  }

  .page-news__legend-card--tip p {
    flex: 1 1 320px;
  }

  .page-news__history-grid {
    grid-template-columns: minmax(0, 0.36fr) minmax(0, 0.64fr);
    gap: 40px;
    align-items: start;
  }

  .page-news__history-fig {
    position: sticky;
    top: 32px;
  }

  .page-news__log-item--media {
    padding: 28px 0;
  }

  .page-news__log-fig img {
    max-height: 320px;
  }
}

@media (min-width: 1100px) {
  .page-news__hero-text h1 {
    max-width: 18ch;
  }

  .page-news__log-item {
    grid-template-columns: 120px minmax(0, 1fr);
    gap: 24px;
  }

  .page-news__log-time::before {
    left: -14px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news a,
  .page-news__log-title {
    transition: none;
  }
}
<<<END>>>