.page-news {
  --news-rule: rgba(185, 138, 75, .45);
  --news-cat: var(--copper);
  display: block;
  background: var(--paper);
  color: var(--text);
  padding-bottom: 56px;
}

.page-news .journal-shell {
  padding-top: 26px;
}

/* ---------- 题签区 ---------- */
.page-news .journal-masthead {
  display: grid;
  gap: 26px;
  margin-top: 20px;
}

.page-news .journal-masthead .eyebrow {
  margin: 0 0 14px;
}

.page-news .journal-masthead__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.85rem, 6.4vw, 3.4rem);
  line-height: 1.16;
  letter-spacing: -.015em;
  margin: 0 0 16px;
  max-width: 24ch;
}

.page-news .journal-lede {
  margin: 0;
  max-width: 62ch;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--text);
}

.page-news .journal-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 28px;
  list-style: none;
  margin: 24px 0 0;
  padding: 16px 0 0;
  border-top: 2px solid var(--ink-900);
}

.page-news .journal-stats li {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.page-news .journal-stats b {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 600;
  line-height: 1;
  color: var(--ink-900);
}

.page-news .journal-stats span {
  font-size: .875rem;
  color: var(--muted);
}

.page-news .journal-masthead__figure {
  margin: 0;
}

.page-news .journal-masthead__frame {
  position: relative;
  border: 3px solid var(--ink-900);
  background: var(--ink-800);
  box-shadow: var(--hard-shadow);
  overflow: hidden;
}

.page-news .journal-masthead__frame::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 5px;
  background: linear-gradient(90deg, var(--copper), var(--cyan));
}

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

.page-news .journal-masthead__cap {
  display: block;
  margin-top: 10px;
  font-size: .75rem;
  letter-spacing: .12em;
  color: var(--muted);
}

/* ---------- 通用区块标题 ---------- */
.page-news .section-head {
  display: grid;
  gap: 10px;
  padding-top: 18px;
  border-top: 2px solid var(--ink-900);
}

.page-news .section-head__label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: .8125rem;
  letter-spacing: .16em;
  color: var(--copper);
}

.page-news .section-head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.4rem, 4.6vw, 2.1rem);
  line-height: 1.28;
  letter-spacing: -.01em;
}

.page-news .section-head p {
  margin: 0;
  max-width: 62ch;
  font-size: .9375rem;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 公告时间轴 ---------- */
.page-news .announce {
  margin-top: clamp(52px, 8vw, 84px);
}

.page-news .announce-banner {
  margin: 24px 0 0;
}

.page-news .announce-banner img {
  display: block;
  width: 100%;
  height: 170px;
  object-fit: cover;
  border: 2px solid var(--ink-900);
  filter: saturate(.68) contrast(1.05);
}

.page-news .announce-banner figcaption {
  margin-top: 8px;
  font-size: .75rem;
  letter-spacing: .1em;
  color: var(--muted);
}

.page-news .loglist {
  position: relative;
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
}

.page-news .loglist::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 6px;
  bottom: 6px;
  width: 2px;
  background: linear-gradient(180deg, var(--copper) 0%, rgba(185, 138, 75, .1) 100%);
}

.page-news .log-item {
  position: relative;
  padding: 0 0 30px 32px;
}

.page-news .log-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 7px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--news-cat);
  box-shadow: 0 0 0 3px var(--paper), 0 0 0 4px rgba(11, 27, 43, .55);
  transition: box-shadow var(--dur) var(--ease);
}

.page-news .log-item--channel { --news-cat: var(--cyan); }
.page-news .log-item--adapt { --news-cat: var(--copper); }
.page-news .log-item--download { --news-cat: var(--violet); }
.page-news .log-item--subscribe { --news-cat: var(--green); }
.page-news .log-item--visit { --news-cat: var(--copper-bright); }

.page-news .log-item__time {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: .8125rem;
  letter-spacing: .1em;
  color: var(--copper);
}

.page-news .log-item__cat {
  display: inline-block;
  margin: 0 0 8px;
  padding: 3px 10px;
  background: var(--cool);
  border-left: 3px solid var(--news-cat);
  font-family: var(--font-mono);
  font-size: .75rem;
  letter-spacing: .1em;
  color: var(--ink-700);
}

.page-news .log-item__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.0625rem;
  line-height: 1.55;
}

.page-news .log-item__text {
  margin: 0;
  font-size: .9375rem;
  line-height: 1.8;
  color: var(--muted);
}

.page-news .log-more {
  margin-top: 12px;
  padding-top: 10px;
  border-top: 1px dashed rgba(100, 116, 139, .5);
}

.page-news .log-more > summary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  list-style: none;
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: .8125rem;
  letter-spacing: .06em;
  color: var(--ink-700);
  transition: color var(--dur) var(--ease);
}

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

.page-news .log-more > summary::before {
  content: "+";
  font-weight: 700;
  color: var(--copper);
}

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

.page-news .log-more > summary:hover {
  color: var(--ink-900);
}

.page-news .log-more p {
  margin: 10px 0 0;
  font-size: .9375rem;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 版本双栏对照 ---------- */
.page-news .versions {
  margin-top: clamp(52px, 8vw, 84px);
}

.page-news .compare {
  display: grid;
  margin-top: 26px;
  border: 3px solid var(--ink-900);
  background: var(--cool);
  box-shadow: var(--hard-shadow);
}

.page-news .compare__col {
  padding: 22px 20px;
}

.page-news .compare__col--prev {
  border-bottom: 2px solid var(--ink-900);
}

.page-news .compare__col--now {
  background: var(--ink-900);
  color: rgba(243, 239, 231, .86);
}

.page-news .compare__label {
  margin: 0 0 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid currentColor;
  font-size: .8125rem;
  letter-spacing: .14em;
  opacity: .85;
}

.page-news .compare__col--prev .compare__label {
  color: var(--ink-700);
}

.page-news .compare__col--now .compare__label {
  color: var(--copper-bright);
}

.page-news .compare__list {
  display: grid;
  gap: 15px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-news .compare__item {
  display: grid;
  gap: 4px;
  font-size: .9375rem;
  line-height: 1.75;
}

.page-news .compare__item span {
  font-family: var(--font-mono);
  font-size: .75rem;
  letter-spacing: .08em;
}

.page-news .compare__col--prev .compare__item span {
  color: var(--copper);
}

.page-news .compare__col--now .compare__item span {
  color: var(--cyan);
}

.page-news .versions__note {
  margin: 22px 0 0;
  font-size: .9375rem;
  line-height: 1.8;
  color: var(--muted);
}

.page-news .versions__note a {
  color: var(--ink-900);
  text-decoration: none;
  border-bottom: 2px solid var(--copper);
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-news .versions__note a:hover {
  border-bottom-color: var(--ink-900);
  background: var(--cool);
}

/* ---------- 资料下载记录 ---------- */
.page-news .library {
  display: grid;
  gap: 28px;
  margin-top: clamp(52px, 8vw, 84px);
}

.page-news .library-grid {
  display: grid;
  gap: 14px;
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
}

.page-news .library-card {
  display: grid;
  gap: 6px;
  align-content: start;
  padding: 16px 15px 18px;
  background: var(--cool);
  border: 2px solid var(--ink-900);
  border-top: 5px solid var(--copper);
}

.page-news .library-card__num {
  font-family: var(--font-mono);
  font-size: 1.7rem;
  font-weight: 600;
  line-height: 1;
  color: var(--ink-900);
}

.page-news .library-card__name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: .9375rem;
  letter-spacing: .02em;
}

.page-news .library-card p {
  margin: 0;
  font-size: .875rem;
  line-height: 1.7;
  color: var(--muted);
}

.page-news .library__formats {
  margin: 20px 0 0;
  font-size: .9375rem;
  line-height: 1.8;
  color: var(--muted);
}

.page-news .library__formats .mono {
  display: inline-block;
  margin-right: 6px;
  padding: 2px 8px;
  background: var(--ink-900);
  color: var(--cyan);
  font-size: .8125rem;
  letter-spacing: .06em;
}

.page-news .library__figure {
  margin: 0;
}

.page-news .library__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 380px;
  object-fit: cover;
  border: 3px solid var(--ink-900);
  border-left: 8px solid var(--copper);
  filter: saturate(.7);
}

.page-news .library__figure figcaption {
  margin-top: 10px;
  font-size: .75rem;
  letter-spacing: .1em;
  color: var(--muted);
}

/* ---------- 专题索引 ---------- */
.page-news .topics-section {
  margin-top: clamp(52px, 8vw, 84px);
}

.page-news .topics {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  border-top: 2px solid var(--ink-900);
}

.page-news .topics__item {
  border-bottom: 1px solid var(--news-rule);
}

.page-news .topics__link {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr) 24px;
  grid-template-areas:
    "no name go"
    "no note go";
  align-items: center;
  column-gap: 14px;
  row-gap: 4px;
  padding: 16px 4px;
  color: var(--text);
  text-decoration: none;
  transition: background var(--dur) var(--ease), padding-left var(--dur) var(--ease);
}

.page-news .topics__link:hover,
.page-news .topics__link:focus-visible {
  background: var(--cool);
  padding-left: 14px;
}

.page-news .topics__no {
  grid-area: no;
  font-family: var(--font-mono);
  font-size: .875rem;
  color: var(--copper);
}

.page-news .topics__name {
  grid-area: name;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.0625rem;
  line-height: 1.5;
}

.page-news .topics__note {
  grid-area: note;
  font-size: .875rem;
  line-height: 1.7;
  color: var(--muted);
}

.page-news .topics__go {
  grid-area: go;
  justify-self: end;
  color: var(--copper);
  transition: transform var(--dur) var(--ease);
}

.page-news .topics__link:hover .topics__go,
.page-news .topics__link:focus-visible .topics__go {
  transform: translateX(4px);
}

/* ---------- 订阅 ---------- */
.page-news .subscribe {
  margin-top: clamp(52px, 8vw, 84px);
  background: var(--ink-900);
  border: 3px solid var(--ink-900);
  box-shadow: var(--hard-shadow);
}

.page-news .subscribe__inner {
  padding: 26px 20px 30px;
}

.page-news .subscribe .section-head {
  border-top-color: var(--copper);
}

.page-news .subscribe .section-head h2 {
  color: var(--paper);
}

.page-news .subscribe .section-head p {
  color: rgba(243, 239, 231, .78);
}

.page-news .subscribe__figure {
  margin: 24px 0 0;
}

.page-news .subscribe__figure img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid rgba(79, 224, 208, .45);
  object-fit: cover;
}

.page-news .subscribe__path {
  display: grid;
  gap: 10px;
  list-style: none;
  margin: 24px 0 26px;
  padding: 0;
}

.page-news .subscribe__path li {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 10px;
  align-items: baseline;
  font-size: .9375rem;
  line-height: 1.75;
  color: rgba(243, 239, 231, .86);
}

.page-news .subscribe__path .mono {
  font-size: .8125rem;
  letter-spacing: .1em;
  color: var(--cyan);
}

/* ---------- 回访提示 ---------- */
.page-news .revisit {
  margin-top: clamp(44px, 7vw, 72px);
  padding: 22px 20px 24px;
  background: var(--cool);
  border: 2px solid var(--ink-900);
  border-left: 8px solid var(--copper);
}

.page-news .revisit__label {
  margin: 0 0 10px;
  font-size: .75rem;
  letter-spacing: .16em;
  color: var(--copper);
}

.page-news .revisit__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.2rem, 4vw, 1.6rem);
  line-height: 1.35;
}

.page-news .revisit__text {
  margin: 0 0 18px;
  max-width: 60ch;
  font-size: .9375rem;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 桌面端 ---------- */
@media (min-width: 880px) {
  .page-news .journal-masthead {
    grid-template-columns: 1.05fr .95fr;
    gap: 48px;
    align-items: end;
  }

  .page-news .announce-banner img {
    height: 220px;
  }

  .page-news .loglist::before {
    left: 8px;
  }

  .page-news .log-item {
    display: grid;
    grid-template-columns: 104px minmax(0, 1fr);
    column-gap: 34px;
    padding-left: 40px;
  }

  .page-news .log-item::before {
    top: 9px;
  }

  .page-news .log-item__time {
    margin: 4px 0 0;
    font-size: .875rem;
  }

  .page-news .compare {
    grid-template-columns: 1fr 1fr;
  }

  .page-news .compare__col {
    padding: 26px 24px;
  }

  .page-news .compare__col--prev {
    border-bottom: 0;
    border-right: 2px solid var(--ink-900);
  }

  .page-news .library {
    grid-template-columns: 1.45fr .55fr;
    gap: 34px;
    align-items: start;
  }

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

  .page-news .library__figure img {
    max-height: none;
  }

  .page-news .subscribe__inner {
    padding: 36px 40px 40px;
  }

  .page-news .revisit {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    grid-template-areas:
      "label btn"
      "title btn"
      "text btn";
    align-items: center;
    column-gap: 40px;
    padding: 26px 30px;
  }

  .page-news .revisit__label { grid-area: label; }
  .page-news .revisit__title { grid-area: title; }
  .page-news .revisit__text { grid-area: text; margin-bottom: 0; }

  .page-news .revisit .btn {
    grid-area: btn;
    align-self: center;
    white-space: nowrap;
  }
}

@media (min-width: 1100px) {
  .page-news .journal-masthead {
    gap: 64px;
  }

  .page-news .compare__col {
    padding: 30px 28px;
  }

  .page-news .topics__link {
    grid-template-columns: 56px minmax(0, 1fr) 28px;
  }

  .page-news .topics__name {
    font-size: 1.125rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .log-item::before,
  .page-news .log-more > summary,
  .page-news .versions__note a,
  .page-news .topics__link,
  .page-news .topics__go {
    transition: none;
  }

  .page-news .topics__link:hover .topics__go,
  .page-news .topics__link:focus-visible .topics__go {
    transform: none;
  }
}
<<<END>>>

补充一点：上面的 CSS 里 `.page-news .revisit .btn` 依赖共享按钮类；如果共享 `.btn` 在深色/浅色底上的配色不合适，可以在 `.page-news` 作用域内单独调整 `.revisit .btn` 的边框与文字色，不会影响其他页面。