.page-news {
  padding-bottom: clamp(40px, 6vw, 80px);
}

.page-news .sec-head {
  margin-bottom: clamp(20px, 3vw, 32px);
  max-width: 72ch;
}

.page-news .sec-head h2 {
  font-family: var(--font-display);
  font-size: clamp(24px, 3.6vw, 34px);
  font-weight: 800;
  line-height: 1.16;
  letter-spacing: -0.01em;
  color: var(--text);
  margin: 8px 0 12px;
}

.page-news .sec-head p {
  color: var(--muted);
  font-size: 16px;
  line-height: 1.8;
  margin: 0;
}

.page-news .link {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 215, 255, 0.35);
}

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

/* ============ 首屏 ============ */
.page-news .news-head {
  padding-top: clamp(18px, 3vw, 32px);
  padding-bottom: clamp(28px, 5vw, 56px);
  border-bottom: 1px solid var(--line);
}

.page-news .news-head__grid {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
}

@media (min-width: 920px) {
  .page-news .news-head__grid {
    grid-template-columns: minmax(0, 1.65fr) minmax(280px, 0.85fr);
    align-items: end;
  }
}

.page-news .news-head h1 {
  font-family: var(--font-display);
  font-size: clamp(30px, 5.2vw, 58px);
  font-weight: 900;
  line-height: 1.06;
  letter-spacing: -0.025em;
  color: var(--text);
  margin: 10px 0 18px;
}

.page-news .news-head__text {
  font-size: 17px;
  line-height: 1.8;
  color: var(--muted);
  max-width: 60ch;
  margin: 0 0 22px;
}

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

.page-news .news-head__board {
  border: 1px solid var(--line);
  background: var(--ink-800);
  padding: 6px 10px;
}

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

@media (min-width: 920px) {
  .page-news .news-head__board .scoreboard {
    grid-template-columns: 1fr;
  }
}

/* 首屏横向摘要轨道 */
.page-news .news-rail {
  position: relative;
  margin-top: clamp(28px, 4vw, 44px);
  overflow: hidden;
}

.page-news .news-rail::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: clamp(36px, 7vw, 110px);
  background: linear-gradient(90deg, rgba(10, 18, 36, 0), var(--ink-900) 82%);
  pointer-events: none;
}

.page-news .news-rail__track {
  display: flex;
  gap: 14px;
  list-style: none;
  margin: 0;
  padding: 4px var(--gutter) 16px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}

.page-news .news-rail__item {
  flex: 0 0 auto;
  width: min(76vw, 292px);
  scroll-snap-align: start;
  background: var(--ink-800);
  border: 1px solid var(--line);
  border-left-width: 3px;
  padding: 16px 18px 18px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.page-news .news-rail__item--version {
  border-left-color: var(--violet);
}

.page-news .news-rail__item--round {
  border-left-color: var(--green);
}

.page-news .news-rail__item--feature {
  border-left-color: var(--cyan);
}

.page-news .news-rail__item--topic {
  border-left-color: var(--orange);
}

.page-news .news-rail__cat {
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.page-news .news-rail__key {
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 600;
  color: var(--text);
  letter-spacing: 0.02em;
}

.page-news .news-rail__note {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
  flex: 1 1 auto;
}

.page-news .news-rail__link {
  align-self: flex-start;
  font-size: 13px;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 215, 255, 0.35);
  padding-bottom: 1px;
}

.page-news .news-rail__link:hover {
  border-bottom-color: var(--cyan);
}

/* ============ 更新流 ============ */
.page-news .news-feed {
  border-bottom: 1px solid var(--line);
}

.page-news .feed-shell {
  position: relative;
}

.page-news .feed-radio {
  position: absolute;
  top: 0;
  left: 0;
  width: 1px;
  height: 1px;
  margin: 0;
  opacity: 0;
  pointer-events: none;
}

.page-news .feed-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 22px;
}

.page-news .feed-chip {
  display: inline-flex;
  align-items: center;
  padding: 8px 16px;
  border: 1px solid var(--line);
  background: var(--ink-800);
  color: var(--muted);
  font-size: 13px;
  letter-spacing: 0.08em;
  cursor: pointer;
  user-select: none;
  transition: color 0.18s ease, border-color 0.18s ease, background-color 0.18s ease;
}

.page-news .feed-chip:hover {
  border-color: var(--green-dim);
  color: var(--text);
}

.page-news #nf-all:checked ~ .feed-chips label[for="nf-all"],
.page-news #nf-version:checked ~ .feed-chips label[for="nf-version"],
.page-news #nf-round:checked ~ .feed-chips label[for="nf-round"],
.page-news #nf-feature:checked ~ .feed-chips label[for="nf-feature"],
.page-news #nf-topic:checked ~ .feed-chips label[for="nf-topic"] {
  background: var(--green);
  border-color: var(--green);
  color: var(--ink-900);
  font-weight: 700;
}

.page-news #nf-version:checked ~ .feed-list .feed-item:not(.is-version),
.page-news #nf-round:checked ~ .feed-list .feed-item:not(.is-round),
.page-news #nf-feature:checked ~ .feed-list .feed-item:not(.is-feature),
.page-news #nf-topic:checked ~ .feed-list .feed-item:not(.is-topic) {
  display: none;
}

.page-news .feed-list {
  border-top: 1px solid var(--line);
}

.page-news .feed-item {
  border-bottom: 1px solid var(--line);
}

.page-news .feed-item__sum {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 16px;
  padding: 18px 2px;
  cursor: pointer;
  list-style: none;
}

.page-news .feed-item__sum::-webkit-details-marker {
  display: none;
}

.page-news .feed-item__sum::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--green);
  margin-left: auto;
  flex: none;
}

.page-news .feed-item__box[open] .feed-item__sum::after {
  content: "−";
}

.page-news .feed-item__box[open] .feed-item__sum {
  padding-bottom: 12px;
}

.page-news .feed-item__tag {
  flex: none;
  font-size: 12px;
  letter-spacing: 0.12em;
  padding: 3px 10px;
  border: 1px solid currentColor;
  line-height: 1.6;
}

.page-news .feed-item__tag--version {
  color: var(--violet);
}

.page-news .feed-item__tag--round {
  color: var(--green);
}

.page-news .feed-item__tag--feature {
  color: var(--cyan);
}

.page-news .feed-item__tag--topic {
  color: var(--orange);
}

.page-news .feed-item__key {
  flex: none;
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  letter-spacing: 0.03em;
  min-width: 5.2em;
}

.page-news .feed-item__title {
  flex: 1 1 15em;
  min-width: 0;
  font-size: 16px;
  line-height: 1.55;
  color: var(--text);
}

.page-news .feed-item__body {
  padding: 0 2px 22px;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.8;
  max-width: 78ch;
}

.page-news .feed-item__body p {
  margin: 0 0 12px;
}

.page-news .feed-item__points {
  margin: 0;
  padding: 0 0 0 18px;
  list-style: none;
}

.page-news .feed-item__points li {
  position: relative;
  margin-bottom: 6px;
}

.page-news .feed-item__points li::before {
  content: "";
  position: absolute;
  left: -16px;
  top: 0.72em;
  width: 6px;
  height: 1px;
  background: var(--green);
}

/* ============ 图 ============ */
.page-news .news-figure {
  margin: 0 0 clamp(22px, 3vw, 34px);
  border: 1px solid var(--line);
  background: var(--ink-800);
}

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

.page-news .news-figure figcaption {
  padding: 12px 16px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--muted);
}

@media (min-width: 900px) {
  .page-news .news-figure--narrow,
  .page-news .news-figure--topic {
    max-width: 760px;
  }
}

/* ============ 版本迭代 ============ */
.page-news .news-versions {
  border-bottom: 1px solid var(--line);
}

.page-news .version-track {
  list-style: none;
  margin: 0 0 clamp(22px, 3vw, 32px);
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

@media (min-width: 960px) {
  .page-news .version-track {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-news .version-node {
  background: var(--ink-800);
  padding: clamp(20px, 2.6vw, 28px);
  display: flex;
  flex-direction: column;
  gap: 10px;
  border-top: 3px solid var(--line);
}

.page-news .version-node--latest {
  border-top-color: var(--green);
  background: var(--ink-700);
}

.page-news .version-node__ver {
  font-family: var(--font-mono);
  font-size: clamp(28px, 4vw, 36px);
  font-weight: 600;
  line-height: 1;
  color: var(--green);
  letter-spacing: 0.01em;
}

.page-news .version-node__when {
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.page-news .version-node h3 {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--text);
  margin: 4px 0 0;
}

.page-news .version-node__points {
  list-style: none;
  margin: 6px 0 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-news .version-node__points li {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

.page-news .version-node__points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.68em;
  width: 7px;
  height: 1px;
  background: var(--green-dim);
}

.page-news .versions-note {
  margin: 0;
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--orange);
  background: var(--ink-800);
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

/* ============ 轮次进度 ============ */
.page-news .news-rounds {
  border-bottom: 1px solid var(--line);
}

.page-news .round-panel {
  border: 1px solid var(--line);
  background: var(--ink-800);
  padding: clamp(20px, 3vw, 32px);
  margin-bottom: clamp(22px, 3vw, 32px);
}

.page-news .round-panel__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 16px;
  margin-bottom: 22px;
}

.page-news .round-panel__big {
  font-family: var(--font-mono);
  font-size: clamp(40px, 8vw, 68px);
  font-weight: 600;
  line-height: 1;
  color: var(--green);
}

.page-news .round-panel__unit {
  font-family: var(--font-mono);
  font-size: 16px;
  color: var(--muted);
}

.page-news .round-panel__status {
  margin-left: auto;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--cyan);
}

.page-news .round-strip {
  position: relative;
  height: 46px;
  border: 1px solid var(--line);
  background-color: var(--ink-900);
  background-image: repeating-linear-gradient(
    90deg,
    var(--line) 0 1px,
    transparent 1px 2.6316%
  );
  overflow: hidden;
}

.page-news .round-strip__fill {
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  width: 71.05%;
  background: linear-gradient(90deg, rgba(61, 255, 158, 0.08), rgba(61, 255, 158, 0.32));
  border-right: 2px solid var(--green);
}

.page-news .round-legend {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--muted);
}

.page-news .round-legend b {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 15px;
  color: var(--green);
  margin-right: 2px;
}

/* ============ 专题 ============ */
.page-news .news-topics {
  border-bottom: 1px solid var(--line);
}

.page-news .topic-grid {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  margin-bottom: clamp(22px, 3vw, 32px);
}

@media (min-width: 860px) {
  .page-news .topic-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-news .topic-card {
  background: var(--ink-800);
  padding: clamp(20px, 2.6vw, 28px);
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: background-color 0.18s ease;
}

.page-news .topic-card:hover {
  background: var(--ink-700);
}

.page-news .topic-card h3 {
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--text);
  margin: 0;
}

.page-news .topic-card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
  flex: 1 1 auto;
}

.page-news .topic-meta {
  margin: 0;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 6px 14px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-size: 13px;
}

.page-news .topic-meta dt {
  color: var(--muted);
  letter-spacing: 0.1em;
}

.page-news .topic-meta dd {
  margin: 0;
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 13px;
}

/* ============ 更新提醒 ============ */
.page-news .sub-panel {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
  border: 1px solid var(--line);
  border-top: 3px solid var(--cyan);
  background: var(--ink-800);
  padding: clamp(22px, 3.4vw, 40px);
}

@media (min-width: 900px) {
  .page-news .sub-panel {
    grid-template-columns: minmax(0, 1.5fr) minmax(260px, 0.85fr);
    align-items: start;
  }
}

.page-news .sub-panel h2 {
  font-family: var(--font-display);
  font-size: clamp(22px, 3.2vw, 30px);
  font-weight: 800;
  line-height: 1.2;
  color: var(--text);
  margin: 8px 0 12px;
}

.page-news .sub-panel__text > p {
  margin: 0 0 18px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--muted);
}

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

.page-news .sub-list li {
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
  padding-left: 0;
}

.page-news .sub-list__k {
  display: inline-block;
  min-width: 5.6em;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--cyan);
  letter-spacing: 0.04em;
}

.page-news .sub-panel__action {
  border: 1px solid var(--line);
  background: var(--ink-900);
  padding: 20px;
}

.page-news .switch {
  position: relative;
  display: flex;
  align-items: center;
  gap: 14px;
  cursor: pointer;
  user-select: none;
}

.page-news .switch__input {
  position: absolute;
  top: 4px;
  left: 0;
  width: 52px;
  height: 28px;
  margin: 0;
  opacity: 0;
  cursor: pointer;
  z-index: 2;
}

.page-news .switch__track {
  position: relative;
  flex: none;
  width: 52px;
  height: 28px;
  border: 1px solid var(--line);
  background: var(--ink-700);
  transition: background-color 0.2s ease, border-color 0.2s ease;
}

.page-news .switch__track::after {
  content: "";
  position: absolute;
  top: 3px;
  left: 3px;
  width: 20px;
  height: 20px;
  background: var(--muted);
  transition: transform 0.2s ease, background-color 0.2s ease;
}

.page-news .switch__input:checked ~ .switch__track {
  border-color: var(--green);
  background: rgba(61, 255, 158, 0.14);
}

.page-news .switch__input:checked ~ .switch__track::after {
  transform: translateX(24px);
  background: var(--green);
}

.page-news .switch__input:focus-visible ~ .switch__track {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-news .switch__text {
  font-size: 15px;
  color: var(--text);
  letter-spacing: 0.02em;
}

.page-news .switch__text--on {
  display: none;
  color: var(--green);
}

.page-news .switch__input:checked ~ .switch__text--off {
  display: none;
}

.page-news .switch__input:checked ~ .switch__text--on {
  display: inline;
}

.page-news .sub-panel__hint {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  line-height: 1.8;
  color: var(--muted);
}

@media (prefers-reduced-motion: reduce) {
  .page-news .feed-chip,
  .page-news .switch__track,
  .page-news .switch__track::after,
  .page-news .topic-card {
    transition: none;
  }
}
<<<END>>>

以上是完整的主体 HTML 与页面专属 CSS。正文以“谁在更新、更新到哪、对你意味着什么”三个层次展开，首屏用横向摘要轨道配合比分牌式数字块给出可核查的版本号与轮次，正文依次落到更新流筛选、版本迭代、赛季轮次、专题系列与更新提醒，全部交互均为渐进增强，无脚本也能完整阅读。