.page-news {
  --news-rail: 232px;
  --news-item-no: 88px;
  overflow-x: clip;
}

.page-news .news-head {
  display: grid;
  gap: 26px;
  padding: 22px 0 40px;
  border-bottom: var(--hair-green);
}

.page-news .news-head__title {
  margin: 12px 0 0;
  font-size: clamp(30px, 7vw, 54px);
  font-weight: 900;
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: var(--c-ink);
}

.page-news .news-head__lede {
  margin: 18px 0 0;
  max-width: 40ch;
  font-size: 16px;
  line-height: 1.78;
  color: var(--c-ink);
}

.page-news .news-head__stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin: 26px 0 0;
  border-top: var(--hair);
  border-bottom: var(--hair);
}

.page-news .news-stat {
  padding: 12px 10px 12px 0;
  min-width: 0;
}

.page-news .news-stat + .news-stat {
  padding-left: 14px;
  border-left: var(--hair);
}

.page-news .news-stat dt {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--c-ink-mid);
}

.page-news .news-stat dd {
  margin: 6px 0 0;
  font-family: var(--font-mono);
  font-size: 18px;
  letter-spacing: 0.02em;
  color: var(--c-ink);
  white-space: nowrap;
}

.page-news .news-stat dd .num--stat {
  color: var(--c-amber);
  font-size: 24px;
}

.page-news .news-figure {
  margin: 22px 0 0;
}

.page-news .news-figure--head {
  margin: 0;
}

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

.page-news .news-shell {
  display: grid;
  gap: 28px;
  padding: 34px 0 72px;
  align-items: start;
}

.page-news .news-flow-wrap {
  min-width: 0;
}

/* ---------- 侧边索引 ---------- */
.page-news .news-rail {
  min-width: 0;
}

.page-news .news-rail__title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--c-ink-mid);
}

.page-news .index-rail__list {
  display: flex;
  gap: 6px;
  margin: 0;
  padding: 0 0 4px;
  list-style: none;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-news .index-rail__item {
  flex: 0 0 auto;
}

.page-news .index-rail__link {
  display: block;
  min-height: 44px;
  padding: 12px 14px;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--c-ink-mid);
  text-decoration: none;
  white-space: nowrap;
  border: var(--hair);
  border-left: 2px solid transparent;
  background: var(--c-paper);
  transition: color 0.15s var(--ease-out), border-color 0.15s var(--ease-out), background 0.15s var(--ease-out);
}

.page-news .index-rail__link:hover {
  color: var(--c-orange-deep);
  border-color: rgba(30, 122, 107, 0.32);
  border-left-color: var(--c-orange);
}

.page-news .index-rail__link.is-active {
  color: var(--c-ink);
  background: var(--c-green-mist);
  border-left-color: var(--c-orange);
}

/* ---------- 分类筛选 ---------- */
.page-news .news-filter__bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding-bottom: 22px;
  border-bottom: var(--hair-green);
}

.page-news .news-filter__bar label.tag {
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  padding: 7px 14px;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--c-green-deep);
  background: transparent;
  border: var(--hair-green);
  cursor: pointer;
  transition: color 0.15s var(--ease-out), background 0.15s var(--ease-out), border-color 0.15s var(--ease-out);
}

.page-news .news-filter__bar label.tag:hover {
  color: var(--c-orange-deep);
  border-color: var(--c-orange);
}

.page-news #nf-all:checked ~ .news-filter__bar label[for="nf-all"],
.page-news #nf-notice:checked ~ .news-filter__bar label[for="nf-notice"],
.page-news #nf-rule:checked ~ .news-filter__bar label[for="nf-rule"],
.page-news #nf-version:checked ~ .news-filter__bar label[for="nf-version"],
.page-news #nf-tag:checked ~ .news-filter__bar label[for="nf-tag"],
.page-news #nf-topic:checked ~ .news-filter__bar label[for="nf-topic"] {
  color: var(--c-ink);
  background: var(--c-orange);
  border-color: var(--c-orange);
}

.page-news #nf-all:focus-visible ~ .news-filter__bar label[for="nf-all"],
.page-news #nf-notice:focus-visible ~ .news-filter__bar label[for="nf-notice"],
.page-news #nf-rule:focus-visible ~ .news-filter__bar label[for="nf-rule"],
.page-news #nf-version:focus-visible ~ .news-filter__bar label[for="nf-version"],
.page-news #nf-tag:focus-visible ~ .news-filter__bar label[for="nf-tag"],
.page-news #nf-topic:focus-visible ~ .news-filter__bar label[for="nf-topic"] {
  outline: 2px solid var(--c-ink);
  outline-offset: 2px;
}

.page-news #nf-notice:checked ~ .news-group:not([data-group="notice"]),
.page-news #nf-rule:checked ~ .news-group:not([data-group="rule"]),
.page-news #nf-version:checked ~ .news-group:not([data-group="version"]),
.page-news #nf-tag:checked ~ .news-group:not([data-group="tag"]),
.page-news #nf-topic:checked ~ .news-group:not([data-group="topic"]) {
  display: none;
}

/* ---------- 分组 ---------- */
.page-news .news-group {
  padding-top: 38px;
  scroll-margin-top: 92px;
}

.page-news .news-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 4px 14px;
  align-items: baseline;
  padding-bottom: 14px;
  border-bottom: 2px solid var(--c-ink);
}

.page-news .news-group__num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--c-orange-deep);
}

.page-news .news-group__title {
  margin: 0;
  font-size: clamp(20px, 4.4vw, 28px);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.2;
  color: var(--c-ink);
}

.page-news .news-group__note {
  grid-column: 1 / -1;
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--c-ink-mid);
}

/* ---------- 条目流 ---------- */
.page-news .news-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-news .news-item {
  display: grid;
  grid-template-columns: var(--news-item-no) minmax(0, 1fr);
  gap: 4px 16px;
  padding: 18px 8px;
  border-bottom: var(--hair);
  transition: background 0.15s var(--ease-out), border-color 0.15s var(--ease-out);
}

.page-news .news-item:hover {
  background: var(--c-green-mist);
  border-bottom-color: var(--c-orange);
}

.page-news .news-item__no {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--c-ink-mid);
  transition: color 0.15s var(--ease-out);
}

.page-news .news-item:hover .news-item__no {
  color: var(--c-orange-deep);
}

.page-news .news-item__main {
  min-width: 0;
}

.page-news .news-item__title {
  margin: 0;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.5;
  letter-spacing: -0.01em;
  color: var(--c-ink);
}

.page-news .news-item__desc {
  margin: 6px 0 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--c-ink);
}

.page-news .news-item__meta {
  grid-column: 2 / -1;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--c-ink-mid);
}

.page-news .news-item__more {
  grid-column: 2 / -1;
  max-height: 0;
  margin: 0;
  padding-left: 10px;
  overflow: hidden;
  opacity: 0;
  font-size: 13px;
  line-height: 1.6;
  color: var(--c-green-deep);
  border-left: 2px solid var(--c-orange);
  transition: max-height 0.22s var(--ease-out), opacity 0.18s var(--ease-out), margin-top 0.22s var(--ease-out);
}

.page-news .news-item:hover .news-item__more,
.page-news .news-item:focus-within .news-item__more {
  max-height: 90px;
  margin-top: 8px;
  opacity: 1;
}

/* ---------- 结尾入口 ---------- */
.page-news .news-outro {
  margin-top: 44px;
  padding: 24px 20px;
  background: var(--c-green-mist);
  border-left: 3px solid var(--c-orange);
}

.page-news .news-outro__text {
  margin: 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--c-ink);
}

.page-news .news-outro__links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 10px;
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
}

.page-news .news-outro__links a {
  display: inline-block;
  padding: 8px 14px;
  font-size: 14px;
  color: var(--c-green-deep);
  text-decoration: none;
  background: var(--c-paper);
  border: var(--hair-green);
  transition: color 0.15s var(--ease-out), border-color 0.15s var(--ease-out);
}

.page-news .news-outro__links a:hover {
  color: var(--c-orange-deep);
  border-color: var(--c-orange);
}

/* ---------- 平板及以上 ---------- */
@media (min-width: 768px) {
  .page-news .news-item {
    grid-template-columns: var(--news-item-no) minmax(0, 1fr) 168px;
    align-items: baseline;
    gap: 4px 20px;
    padding: 18px 10px;
  }

  .page-news .news-item__meta {
    grid-column: 3;
    text-align: right;
    white-space: nowrap;
  }

  .page-news .news-item__more {
    grid-column: 2 / -1;
  }
}

@media (min-width: 900px) {
  .page-news .news-head {
    grid-template-columns: 7fr 5fr;
    gap: 40px;
    align-items: end;
    padding: 30px 0 52px;
  }

  .page-news .news-head__lede {
    font-size: 17px;
  }

  .page-news .news-figure--head {
    margin: 0;
  }

  .page-news .news-figure {
    margin-top: 26px;
  }
}

/* ---------- 桌面：左索引 + 右条目流 ---------- */
@media (min-width: 1024px) {
  .page-news .news-shell {
    grid-template-columns: var(--news-rail) minmax(0, 1fr);
    gap: 52px;
    padding: 44px 0 88px;
  }

  .page-news .news-rail {
    position: sticky;
    top: 88px;
    align-self: start;
  }

  .page-news .news-rail__title {
    padding-bottom: 10px;
    border-bottom: var(--hair);
  }

  .page-news .index-rail__list {
    display: block;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-news .index-rail__item + .index-rail__item {
    margin-top: 2px;
  }

  .page-news .index-rail__link {
    min-height: 42px;
    padding: 11px 12px;
    border: 0;
    border-left: 2px solid transparent;
    background: transparent;
  }

  .page-news .index-rail__link:hover {
    background: rgba(223, 237, 233, 0.7);
  }

  .page-news .index-rail__link.is-active {
    background: var(--c-green-mist);
  }

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

/* ---------- 大屏收紧条目间距 ---------- */
@media (min-width: 1280px) {
  .page-news .news-item {
    padding: 20px 12px;
  }

  .page-news .news-item__title {
    font-size: 18px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .news-item,
  .page-news .news-item__no,
  .page-news .news-item__more,
  .page-news .index-rail__link,
  .page-news .news-filter__bar label.tag,
  .page-news .news-outro__links a {
    transition: none;
  }
}