.page-news {
  --news-idx-w: 224px;
  --news-top-offset: 96px;
}

/* ---------- 面包屑 ---------- */
.page-news .news-crumb {
  padding: 20px 0 0;
}

/* ---------- 首屏 ---------- */
.page-news .news-hero {
  padding: 26px 0 0;
}

.page-news .news-hero h1 {
  font-family: var(--f-display);
  font-size: var(--t26);
  line-height: 1.18;
  letter-spacing: -.02em;
  font-weight: 900;
  color: var(--ink);
  margin: 12px 0 16px;
  max-width: 20em;
}

.page-news .news-hero__lede {
  max-width: 42em;
  margin: 0;
  font-size: var(--t16);
  line-height: 1.85;
  color: var(--cool-600);
}

.page-news .news-strip {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--cool-100);
  border: 1px solid var(--cool-100);
  margin: 30px 0 0;
}

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

.page-news .news-strip dt {
  font-family: var(--f-mono);
  font-size: var(--t12);
  letter-spacing: .08em;
  color: var(--cool-600);
}

.page-news .news-strip dd {
  margin: 6px 0 0;
  font-family: var(--f-display);
  font-size: var(--t20);
  font-weight: 800;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
}

/* ---------- 主体双栏 ---------- */
.page-news .news-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 36px;
  padding: 40px 0 0;
}

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

/* ---------- 左侧分类索引 ---------- */
.page-news .news-index {
  min-width: 0;
}

.page-news .news-index__h {
  font-family: var(--f-mono);
  font-size: var(--t12);
  font-weight: 400;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--cool-600);
  margin: 0 0 12px;
}

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

.page-news .news-index__link {
  position: relative;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 4px 12px 16px;
  border-bottom: 1px solid var(--cool-100);
  color: var(--ink);
  text-decoration: none;
  font-size: var(--t14);
  transition: color .18s var(--ease), background-color .18s var(--ease);
}

.page-news .news-index__link::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 3px;
  height: 0;
  background: var(--orange);
  transform: translateY(-50%);
  transition: height .22s var(--ease);
}

.page-news .news-index__link:hover,
.page-news .news-index__link:focus-visible {
  color: var(--orange-ink);
  background-color: rgba(255, 106, 26, .06);
}

.page-news .news-index__link:hover::before,
.page-news .news-index__link:focus-visible::before {
  height: 58%;
}

.page-news .news-index__name {
  font-weight: 600;
}

.page-news .news-index__n {
  margin-left: auto;
  font-family: var(--f-mono);
  font-size: var(--t12);
  color: var(--cool-600);
  font-variant-numeric: tabular-nums;
}

.page-news .news-index__note {
  margin: 14px 0 0;
  font-size: var(--t12);
  line-height: 1.8;
  color: var(--cool-600);
}

/* ---------- 分组 ---------- */
.page-news .news-group {
  margin: 0 0 56px;
  scroll-margin-top: 104px;
}

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

.page-news .news-group__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--ink);
  margin-bottom: 4px;
}

.page-news .news-group__title {
  margin: 0;
  font-family: var(--f-display);
  font-size: var(--t26);
  font-weight: 800;
  letter-spacing: -.015em;
  color: var(--ink);
}

.page-news .news-group__note {
  color: var(--cool-600);
  white-space: nowrap;
}

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

.page-news .entry {
  position: relative;
  border-bottom: 1px solid var(--cool-100);
}

.page-news .entry::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 3px;
  height: 0;
  background: var(--orange);
  transform: translateY(-50%);
  transition: height .22s var(--ease);
}

.page-news .entry:hover::before,
.page-news .entry:focus-within::before {
  height: 54%;
}

.page-news .entry__head {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 12px;
  padding: 18px 30px 18px 16px;
  cursor: pointer;
  list-style: none;
  transition: background-color .18s var(--ease);
}

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

.page-news .entry__head:hover {
  background-color: rgba(255, 106, 26, .04);
}

.page-news .entry__head::after {
  content: "+";
  position: absolute;
  right: 6px;
  top: 18px;
  font-family: var(--f-mono);
  font-size: var(--t14);
  line-height: 1;
  color: var(--cool-600);
  transition: color .18s var(--ease);
}

.page-news .entry[open] .entry__head::after {
  content: "\2212";
  color: var(--orange);
}

.page-news .entry__no {
  color: var(--orange-ink);
  white-space: nowrap;
}

.page-news .entry__title {
  flex: 1 1 260px;
  margin: 0;
  font-size: var(--t16);
  font-weight: 700;
  line-height: 1.5;
  letter-spacing: -.005em;
  color: var(--ink);
}

.page-news .entry__when {
  margin-left: auto;
  font-family: var(--f-mono);
  font-size: var(--t12);
  color: var(--cool-600);
  white-space: nowrap;
}

.page-news .entry__body {
  max-width: 44em;
  padding: 0 30px 22px 16px;
}

.page-news .entry__body p {
  margin: 0;
  font-size: var(--t14);
  line-height: 1.85;
  color: var(--cool-600);
}

.page-news .entry__figure {
  margin: 16px 0 0;
  border: 1px solid var(--edge);
  padding: 8px;
  background: var(--paper);
}

.page-news .entry__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-news .entry__cap {
  margin: 10px 2px 2px;
  font-family: var(--f-mono);
  font-size: var(--t12);
  letter-spacing: .04em;
  color: var(--cool-600);
}

/* ---------- 重点条目 ---------- */
.page-news .lead-entry {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
  margin: 18px 0 0;
  padding: 18px;
  background: var(--arena);
  border: 1px solid var(--edge);
}

.page-news .lead-entry__media {
  min-width: 0;
  border: 1px solid var(--edge);
}

.page-news .lead-entry__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-news .lead-entry__paper {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 20px;
  background: var(--paper);
  border: 1px solid var(--edge);
}

.page-news .lead-entry__kicker {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 0;
}

.page-news .lead-entry__title {
  margin: 0;
  font-family: var(--f-display);
  font-size: var(--t20);
  font-weight: 800;
  line-height: 1.35;
  letter-spacing: -.015em;
  color: var(--ink);
}

.page-news .lead-entry__text {
  margin: 0;
  font-size: var(--t14);
  line-height: 1.85;
  color: var(--cool-600);
}

/* ---------- 兼容性测试配图 ---------- */
.page-news .compat-figure {
  margin: 18px 0 0;
  border: 1px solid var(--edge);
  background: var(--panel);
  padding: 10px;
}

.page-news .compat-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-news .compat-figure__cap {
  margin: 10px 2px 2px;
  font-family: var(--f-mono);
  font-size: var(--t12);
  letter-spacing: .04em;
  color: var(--muted);
}

/* ---------- 分区标题（专题 / 归档共用） ---------- */
.page-news .news-block-head {
  padding-bottom: 18px;
  border-bottom: 1px solid var(--cool-100);
  margin-bottom: 28px;
}

.page-news .news-block-head h2 {
  margin: 10px 0 0;
  font-family: var(--f-display);
  font-size: var(--t26);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -.018em;
  color: var(--ink);
  max-width: 22em;
}

.page-news .news-block-head__text {
  margin: 14px 0 0;
  max-width: 46em;
  font-size: var(--t14);
  line-height: 1.85;
  color: var(--cool-600);
}

/* ---------- 专题系列 ---------- */
.page-news .news-series {
  padding: 64px 0 0;
}

.page-news .news-series__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
}

.page-news .news-series__media {
  margin: 0;
  border: 1px solid var(--edge);
  background: var(--arena);
  padding: 10px;
}

.page-news .news-series__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: cover;
}

.page-news .series-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 22px 20px;
  background: var(--white);
  border: 1px solid var(--cool-100);
  box-shadow: var(--shadow-1);
  transition: border-color .2s var(--ease);
}

.page-news .series-card:hover {
  border-color: var(--orange);
}

.page-news .series-card .index {
  color: var(--orange-ink);
}

.page-news .series-card__title {
  margin: 0;
  font-size: var(--t20);
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: -.01em;
  color: var(--ink);
}

.page-news .series-card__text {
  margin: 0;
  font-size: var(--t14);
  line-height: 1.85;
  color: var(--cool-600);
}

.page-news .series-card__meta {
  margin: auto 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--cool-100);
  font-family: var(--f-mono);
  font-size: var(--t12);
  letter-spacing: .08em;
  color: var(--cool-600);
}

/* ---------- 归档与检索 ---------- */
.page-news .news-archive {
  padding: 64px 0 0;
}

.page-news .archive-paths {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--cool-100);
  border: 1px solid var(--cool-100);
}

.page-news .archive-path {
  background: var(--paper);
  padding: 22px 20px;
}

.page-news .archive-path .index {
  color: var(--orange-ink);
}

.page-news .archive-path__title {
  margin: 10px 0 8px;
  font-size: var(--t16);
  font-weight: 700;
  line-height: 1.45;
  color: var(--ink);
}

.page-news .archive-path__text {
  margin: 0;
  font-size: var(--t14);
  line-height: 1.85;
  color: var(--cool-600);
}

/* ---------- 底部引导 ---------- */
.page-news .news-next {
  margin: 64px 0 72px;
  padding: 26px 22px;
  background: var(--panel);
  border: 1px solid var(--edge);
}

.page-news .news-next__title {
  margin: 0;
  font-family: var(--f-display);
  font-size: var(--t20);
  font-weight: 800;
  line-height: 1.35;
  letter-spacing: -.015em;
  color: var(--white);
}

.page-news .news-next__text {
  margin: 12px 0 0;
  max-width: 42em;
  font-size: var(--t14);
  line-height: 1.85;
  color: var(--muted);
}

.page-news .news-next__acts {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 20px 0 0;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-news .news-strip {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-news .lead-entry {
    padding: 22px;
    gap: 22px;
  }

  .page-news .lead-entry__paper {
    padding: 24px;
  }

  .page-news .news-series__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
  }

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

  .page-news .news-block-head h2 {
    font-size: var(--t34);
  }

  .page-news .news-next {
    padding: 32px 28px;
  }

  .page-news .news-next__title {
    font-size: var(--t26);
  }
}

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

  .page-news .news-hero h1 {
    font-size: var(--t34);
  }

  .page-news .news-body {
    grid-template-columns: var(--news-idx-w) minmax(0, 1fr);
    gap: 56px;
    padding-top: 52px;
  }

  .page-news .news-index {
    position: sticky;
    top: var(--news-top-offset);
  }

  .page-news .news-index__list {
    border-top-width: 1px;
    border-top-color: var(--edge);
  }

  .page-news .lead-entry {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
    padding: 24px;
    gap: 24px;
  }

  .page-news .news-series,
  .page-news .news-archive {
    padding-top: 88px;
  }

  .page-news .news-next {
    margin-top: 88px;
  }
}

@media (min-width: 1120px) {
  .page-news .news-hero h1 {
    font-size: var(--t48);
  }

  .page-news .news-series__grid {
    grid-template-columns: minmax(0, .9fr) minmax(0, 1fr) minmax(0, 1fr);
    grid-auto-rows: minmax(0, auto);
  }

  .page-news .news-series__media {
    grid-row: span 2;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .news-index__link,
  .page-news .news-index__link::before,
  .page-news .entry::before,
  .page-news .entry__head,
  .page-news .entry__head::after,
  .page-news .series-card {
    transition: none;
  }
}