.page-news {
  --pn-axis: 26px;
  --pn-line: rgba(124, 143, 160, .3);
}

.page-news img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* ---------- 首屏框景 ---------- */
.page-news .news-hero {
  position: relative;
  display: grid;
  gap: 26px;
  margin-top: clamp(22px, 4vw, 46px);
  padding: clamp(22px, 4vw, 44px);
  background: var(--ink-700);
  border: 2px solid var(--ink-600);
  box-shadow: var(--shadow-hard);
}

.page-news .news-hero::before,
.page-news .news-hero::after {
  content: "";
  position: absolute;
  width: 22px;
  height: 22px;
  border: 2px solid var(--signal);
  pointer-events: none;
}

.page-news .news-hero::before {
  top: -2px;
  left: -2px;
  border-right: 0;
  border-bottom: 0;
}

.page-news .news-hero::after {
  right: -2px;
  bottom: -2px;
  border-top: 0;
  border-left: 0;
}

.page-news .news-title {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(38px, 8vw, 70px);
  line-height: 1.05;
  letter-spacing: -.02em;
  color: var(--paper);
}

.page-news .news-lede {
  max-width: 36ch;
  margin: 16px 0 0;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.85;
  color: var(--rock);
}

.page-news .news-lede--tight {
  max-width: 52ch;
  margin-top: 12px;
}

.page-news .news-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 26px;
  margin-top: 24px;
  padding-top: 16px;
  border-top: 1px solid var(--pn-line);
}

.page-news .news-fact {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--rock);
}

.page-news .news-fact strong {
  color: var(--paper);
  font-weight: 400;
}

.page-news .news-hero-media {
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--ink-600);
  min-height: 200px;
}

.page-news .news-hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(.55) brightness(.85);
}

/* ---------- 章节骨架 ---------- */
.page-news .news-section {
  padding-block: clamp(40px, 6vw, 78px);
}

.page-news .news-h2 {
  margin: 8px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(25px, 4.2vw, 40px);
  line-height: 1.15;
  letter-spacing: -.02em;
  color: var(--paper);
}

/* ---------- 筛选 ---------- */
.page-news .news-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 24px 0 4px;
}

.page-news .f-input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.page-news .f-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 13px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--rock);
  background: var(--ink-700);
  border: 1px solid var(--ink-600);
  cursor: pointer;
  transition: color .18s var(--ease), background .18s var(--ease), border-color .18s var(--ease);
}

.page-news .f-chip:hover {
  color: var(--paper);
  border-color: var(--rock);
}

.page-news .f-count {
  color: inherit;
  opacity: .6;
}

.page-news .f-input:checked + .f-chip {
  color: var(--ink-900);
  background: var(--signal);
  border-color: var(--signal);
}

.page-news .f-input:focus-visible + .f-chip {
  outline: 2px solid var(--celadon);
  outline-offset: 2px;
}

.page-news .news-filter:has(#nf-version:checked) ~ .news-timeline .tl-item:not([data-cat="version"]),
.page-news .news-filter:has(#nf-index:checked) ~ .news-timeline .tl-item:not([data-cat="index"]),
.page-news .news-filter:has(#nf-doc:checked) ~ .news-timeline .tl-item:not([data-cat="doc"]),
.page-news .news-filter:has(#nf-service:checked) ~ .news-timeline .tl-item:not([data-cat="service"]) {
  display: none;
}

/* ---------- 时间线 ---------- */
.page-news .news-timeline {
  position: relative;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
}

.page-news .news-timeline::before {
  content: "";
  position: absolute;
  left: var(--pn-axis);
  top: 6px;
  bottom: 40px;
  width: 1px;
  background: var(--pn-line);
}

.page-news .news-timeline::after {
  content: "";
  position: absolute;
  left: var(--pn-axis);
  bottom: 14px;
  width: 40px;
  height: 2px;
  background: var(--signal);
}

.page-news .tl-item {
  position: relative;
  padding-left: calc(var(--pn-axis) + 24px);
  padding-block: 20px;
}

.page-news .tl-item::before {
  content: "";
  position: absolute;
  left: calc(var(--pn-axis) - 5px);
  top: 28px;
  width: 11px;
  height: 11px;
  box-sizing: border-box;
  background: var(--signal);
  border: 2px solid var(--ink-800);
}

.page-news .tl-item[data-cat="index"]::before {
  background: var(--celadon);
}

.page-news .tl-item[data-cat="doc"]::before {
  background: var(--terracotta);
}

.page-news .tl-item[data-cat="service"]::before {
  background: var(--paper);
}

.page-news .tl-no {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--terracotta);
  transition: color .18s var(--ease);
}

.page-news .tl-item:hover .tl-no {
  color: var(--signal);
}

.page-news .tl-tag {
  display: inline-block;
  margin: 10px 0 0;
  padding: 2px 9px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .04em;
  color: var(--paper);
  background: var(--ink-600);
  border-left: 3px solid var(--signal);
}

.page-news .tl-item[data-cat="index"] .tl-tag {
  border-left-color: var(--celadon);
}

.page-news .tl-item[data-cat="doc"] .tl-tag {
  border-left-color: var(--terracotta);
}

.page-news .tl-item[data-cat="service"] .tl-tag {
  border-left-color: var(--celadon);
}

.page-news .tl-title {
  margin: 10px 0 0;
  font-family: var(--font-body);
  font-weight: 900;
  font-size: clamp(17px, 2.1vw, 20px);
  line-height: 1.45;
  color: var(--paper);
}

.page-news .tl-sum {
  max-width: 48ch;
  margin: 8px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--rock);
}

.page-news .tl-more {
  margin-top: 10px;
}

.page-news .tl-more summary {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--celadon);
  cursor: pointer;
  list-style: none;
}

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

.page-news .tl-more summary::before {
  content: "＋";
}

.page-news .tl-more[open] summary::before {
  content: "－";
}

.page-news .tl-more summary:focus-visible {
  outline: 2px solid var(--celadon);
  outline-offset: 2px;
}

.page-news .tl-more p {
  max-width: 46ch;
  margin: 10px 0 0;
  padding-left: 14px;
  border-left: 2px solid var(--ink-600);
  font-size: 14px;
  line-height: 1.85;
  color: var(--rock);
}

/* ---------- 专题区 ---------- */
.page-news .news-topics {
  margin-top: clamp(12px, 2vw, 24px);
  background: var(--ink-900);
  border-top: 1px solid var(--pn-line);
  border-bottom: 1px solid var(--pn-line);
}

.page-news .topics-intro {
  display: grid;
  gap: 24px;
  padding-block: clamp(34px, 5vw, 64px);
  border-bottom: 1px solid var(--pn-line);
}

.page-news .topics-lede {
  max-width: 40ch;
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--rock);
}

.page-news .news-topic-cover {
  margin: 0;
  border: 1px solid var(--ink-600);
  box-shadow: var(--shadow-soft);
}

.page-news .news-topic-cover img {
  width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(.5) brightness(.9);
}

.page-news .topic {
  display: grid;
  gap: 22px;
  padding-block: clamp(28px, 4vw, 52px);
  border-bottom: 1px solid var(--pn-line);
}

.page-news .topic-no {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--terracotta);
}

.page-news .topic-title {
  margin: 8px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(24px, 5vw, 44px);
  line-height: 1.05;
  letter-spacing: -.02em;
  color: var(--paper);
}

.page-news .topic-desc {
  max-width: 40ch;
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--rock);
}

.page-news .news-topic-figure {
  margin: 0;
  border: 1px solid var(--ink-600);
}

.page-news .news-topic-figure img {
  width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(.55) brightness(.88);
}

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

.page-news .topic-item {
  border-top: 1px solid var(--pn-line);
}

.page-news .topic-item:nth-child(even) {
  margin-left: clamp(0px, 5%, 54px);
}

.page-news .topic-link {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 13px 2px;
  color: var(--paper);
  text-decoration: none;
  transition: color .18s var(--ease);
}

.page-news .topic-link-title {
  font-size: 15px;
  line-height: 1.6;
}

.page-news .topic-link-meta {
  flex: none;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .04em;
  color: var(--rock);
  white-space: nowrap;
}

.page-news .topic-link:hover .topic-link-title,
.page-news .topic-link:focus-visible .topic-link-title {
  color: var(--signal);
}

.page-news .topic-link:focus-visible {
  outline: 2px solid var(--celadon);
  outline-offset: 2px;
}

/* ---------- 节奏 ---------- */
.page-news .news-rhythm .news-lede--tight {
  max-width: 50ch;
}

.page-news .rhythm-grid {
  display: grid;
  gap: 14px;
  margin-top: 28px;
}

.page-news .rhythm-card {
  padding: 20px 20px 18px;
  background: var(--ink-700);
  border: 1px solid var(--ink-600);
  border-left: 3px solid var(--celadon);
}

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

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

.page-news .rhythm-card:nth-child(4) {
  border-left-color: var(--rock);
}

.page-news .rhythm-no {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--rock);
}

.page-news .rhythm-title {
  margin: 8px 0 0;
  font-family: var(--font-body);
  font-weight: 900;
  font-size: 17px;
  line-height: 1.4;
  color: var(--paper);
}

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

.page-news .rhythm-freq {
  display: inline-block;
  margin-top: 14px;
  padding: 3px 9px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .04em;
  color: var(--ink-900);
  background: var(--paper);
}

.page-news .news-rhythm-figure {
  margin: 26px 0 0;
  border: 1px solid var(--ink-600);
  box-shadow: var(--shadow-soft);
}

.page-news .news-rhythm-figure img {
  width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(.5) brightness(.9);
}

/* ---------- 结尾入口 ---------- */
.page-news .news-cta {
  padding-block: clamp(36px, 6vw, 72px) clamp(44px, 7vw, 88px);
  border-top: 1px solid var(--pn-line);
}

.page-news .news-cta .news-lede--tight {
  max-width: 48ch;
}

.page-news .cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-news .cta-note {
  margin: 20px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--rock);
}

.page-news .cta-note a {
  color: var(--celadon);
  text-decoration: none;
  border-bottom: 1px solid var(--ink-600);
}

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

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-news .news-hero {
    grid-template-columns: 1.1fr .9fr;
    align-items: stretch;
  }

  .page-news .news-hero-media {
    min-height: 100%;
  }

  .page-news .rhythm-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }

  .page-news .topics-intro {
    grid-template-columns: 1.15fr .85fr;
    align-items: start;
  }
}

@media (min-width: 880px) {
  .page-news .news-timeline {
    --pn-axis: 118px;
  }

  .page-news .tl-item {
    display: grid;
    grid-template-columns: var(--pn-axis) minmax(0, 1fr);
    padding-left: 0;
    padding-block: 22px;
  }

  .page-news .tl-no {
    grid-column: 1;
    padding-right: 24px;
    padding-top: 3px;
    text-align: right;
  }

  .page-news .tl-card {
    grid-column: 2;
    padding-left: 24px;
  }

  .page-news .topic {
    grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr);
    gap: 36px;
    align-items: start;
  }

  .page-news .topic--offset .topic-head {
    padding-top: 34px;
    margin-left: 10%;
  }

  .page-news .news-topic-figure {
    margin-top: 6px;
  }

  .page-news .news-rhythm-figure {
    margin-top: 34px;
    max-width: 78%;
  }
}

@media (min-width: 1080px) {
  .page-news .news-hero {
    grid-template-columns: 1.15fr .85fr;
    gap: 40px;
  }

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

  .page-news .topic-list {
    margin-top: 8px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .f-chip,
  .page-news .tl-no,
  .page-news .topic-link {
    transition: none;
  }
}
<<<END>>>