.page-news {
  --news-gutter: 18px;
  display: block;
}

.page-news a:focus-visible,
.page-news button:focus-visible,
.page-news summary:focus-visible {
  outline: 2px solid var(--neon);
  outline-offset: 3px;
}

/* ---------- 引入区 ---------- */
.page-news .news-intro {
  padding: 26px 0 6px;
}

.page-news .news-intro__grid {
  display: grid;
  gap: 22px;
  margin-top: 18px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
}

.page-news .news-kicker {
  margin: 0 0 12px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--brass-lit);
}

.page-news .news-intro h1 {
  margin: 0 0 18px;
  font-size: clamp(1.85rem, 7.6vw, 3.3rem);
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: var(--text);
}

.page-news .news-intro__lead p {
  margin: 0 0 12px;
  max-width: 68ch;
  font-size: 16px;
  color: var(--text);
}

.page-news .news-intro__lead p:last-child {
  margin-bottom: 0;
  font-size: 15px;
  color: var(--muted);
}

.page-news .news-jump {
  border: 1px solid var(--line);
  background: var(--panel);
  padding: 16px 18px 18px;
}

.page-news .news-jump__title {
  margin: 0 0 12px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-news .news-jump ol {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 9px;
}

.page-news .news-jump a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding-bottom: 2px;
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--text);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 180ms var(--ease), border-color 180ms var(--ease);
}

.page-news .news-jump a::before {
  content: "→";
  color: var(--brass);
}

.page-news .news-jump a:hover {
  color: var(--neon);
  border-bottom-color: var(--karst);
}

/* ---------- 轮次状态条 ---------- */
.page-news .news-round {
  padding-top: 30px;
}

.page-news .news-section__sr {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  margin: 0;
  font-size: 1px;
}

.page-news .news-round__strip {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-news .news-round__cell {
  background: var(--panel);
  padding: 14px 16px 16px;
}

.page-news .news-round__label {
  display: block;
  margin-bottom: 7px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-news .news-round__value {
  display: block;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--text);
}

.page-news .news-round__cell--live {
  background: var(--panel-2);
  box-shadow: inset 2px 0 0 var(--neon);
}

.page-news .news-round__cell--live .news-round__value {
  color: var(--neon);
}

/* ---------- 通用章节头 ---------- */
.page-news .news-section {
  padding-top: 46px;
}

.page-news .news-section__head {
  margin-bottom: 22px;
}

.page-news .news-section__kicker {
  margin: 0 0 10px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--brass-lit);
}

.page-news .news-section h2 {
  margin: 0 0 10px;
  font-size: clamp(1.42rem, 4.6vw, 2.1rem);
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--text);
}

.page-news .news-section__note {
  margin: 0;
  max-width: 72ch;
  font-size: 15px;
  color: var(--muted);
}

/* ---------- 图片 ---------- */
.page-news .news-media {
  margin: 22px 0 0;
}

.page-news .news-media img,
.page-news .news-outro img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}

/* ---------- 筛选栏 ---------- */
.page-news .news-filter {
  position: sticky;
  top: 0;
  z-index: 6;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 26px 0 0;
  padding: 12px 0;
  background: var(--ink);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-news .news-filter .filter-count {
  margin-left: auto;
  padding-left: 10px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--brass-lit);
}

/* ---------- 条目流水 ---------- */
.page-news .news-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-news .news-item {
  padding: 22px 0 20px;
  border-bottom: 1px solid var(--line);
}

.page-news .news-item__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}

.page-news .news-item__no {
  order: -1;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--brass-lit);
}

.page-news .news-item__when {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.page-news .news-item__title {
  margin: 0 0 8px;
  font-size: clamp(1.04rem, 3.3vw, 1.3rem);
  line-height: 1.36;
  font-weight: 700;
  color: var(--text);
}

.page-news .news-item__sum {
  margin: 0;
  max-width: 74ch;
  font-size: 15px;
  line-height: 1.7;
  color: var(--muted);
}

.page-news .news-paths {
  display: grid;
  gap: 5px;
  margin: 13px 0 0;
  padding: 10px 12px 11px;
  background: var(--panel-2);
  border-left: 2px solid var(--brass);
}

.page-news .news-paths__row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  line-height: 1.6;
}

.page-news .news-paths__key {
  min-width: 4.4em;
  color: var(--muted);
}

.page-news .news-paths__val {
  color: var(--text);
  overflow-wrap: anywhere;
}

.page-news .news-paths__row--old .news-paths__val {
  color: var(--muted);
  text-decoration: line-through;
  text-decoration-color: var(--alert);
  text-decoration-thickness: 1px;
}

.page-news .news-item__more {
  margin-top: 12px;
}

.page-news .news-item__more summary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  list-style: none;
  cursor: pointer;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--karst-lift);
  transition: color 180ms var(--ease);
}

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

.page-news .news-item__more summary::before {
  content: "+";
  font-size: 14px;
  color: var(--brass);
}

.page-news .news-item__more[open] summary::before {
  content: "−";
  color: var(--neon);
}

.page-news .news-item__more summary:hover {
  color: var(--neon);
}

.page-news .news-item__more p {
  margin: 12px 0 0;
  max-width: 74ch;
  font-size: 15px;
  line-height: 1.72;
  color: var(--text);
}

.page-news .news-item__more a,
.page-news .news-aside a,
.page-news .news-cadence__item a {
  color: var(--neon);
  text-decoration: none;
  border-bottom: 1px solid var(--karst);
  transition: border-color 180ms var(--ease);
}

.page-news .news-item__more a:hover,
.page-news .news-aside a:hover,
.page-news .news-cadence__item a:hover {
  border-bottom-color: var(--neon);
}

.page-news .news-item__link {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.04em;
}

.page-news .news-pager {
  margin-top: 20px;
}

/* ---------- 版本迭代线 ---------- */
.page-news .news-versions__grid {
  display: grid;
  gap: 28px;
}

.page-news .news-timeline {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 4px 0 4px 24px;
}

.page-news .news-timeline::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 10px;
  bottom: 10px;
  width: 1px;
  background: linear-gradient(180deg, var(--karst-lift), var(--line));
}

.page-news .news-timeline__node {
  position: relative;
  padding: 0 0 26px;
}

.page-news .news-timeline__node:last-child {
  padding-bottom: 0;
}

.page-news .news-timeline__node .status-dot {
  position: absolute;
  left: -23px;
  top: 6px;
}

.page-news .news-timeline__link {
  display: block;
  text-decoration: none;
  color: var(--text);
}

.page-news .news-timeline__code {
  display: inline-block;
  margin-bottom: 8px;
  padding: 1px 7px 2px;
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--brass-lit);
  border: 1px solid var(--brass);
}

.page-news .news-timeline__title {
  display: block;
  margin-bottom: 6px;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: -0.005em;
  transition: color 180ms var(--ease);
}

.page-news .news-timeline__desc {
  display: block;
  max-width: 62ch;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--muted);
}

.page-news .news-timeline__link:hover .news-timeline__title {
  color: var(--neon);
}

/* ---------- 专题索引 ---------- */
.page-news .news-topics__grid {
  display: grid;
  gap: 26px;
}

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

.page-news .news-topic {
  padding: 18px 0 19px;
  border-bottom: 1px solid var(--line);
}

.page-news .news-topic__count {
  display: block;
  margin-bottom: 7px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--brass-lit);
}

.page-news .news-topic h3 {
  margin: 0 0 7px;
  font-size: 17px;
  line-height: 1.4;
  color: var(--text);
}

.page-news .news-topic p {
  margin: 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 更新节奏 ---------- */
.page-news .news-cadence {
  display: grid;
  gap: 24px;
}

.page-news .news-cadence__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-news .news-cadence__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
}

.page-news .news-cadence__item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.page-news .news-cadence__no {
  padding-top: 3px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--brass);
}

.page-news .news-cadence__item p {
  margin: 0;
  max-width: 70ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--text);
}

.page-news .news-aside {
  align-self: start;
}

.page-news .news-aside p {
  margin: 0 0 12px;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--text);
}

.page-news .news-aside p:last-child {
  margin-bottom: 0;
}

/* ---------- 收尾 ---------- */
.page-news .news-outro {
  margin: 54px 0 0;
}

.page-news .rule-line {
  margin: 30px 0 0;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-news .news-round__strip {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-news .news-intro {
    padding-top: 34px;
  }

  .page-news .news-intro__grid {
    grid-template-columns: minmax(0, 1.7fr) minmax(0, 1fr);
    gap: 48px;
    align-items: start;
  }

  .page-news .news-round__strip {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .page-news .news-versions__grid {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
    gap: 46px;
    align-items: start;
  }

  .page-news .news-topics__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
    gap: 42px;
    align-items: start;
  }

  .page-news .news-cadence {
    grid-template-columns: minmax(0, 1.9fr) minmax(0, 1fr);
    gap: 46px;
    align-items: start;
  }

  .page-news .news-media {
    margin-top: 0;
  }

  .page-news .news-filter {
    margin-top: 30px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .news-jump a,
  .page-news .news-item__more summary,
  .page-news .news-timeline__title {
    transition: none;
  }
}