.page-news {
  --news-rail: 236px;
  --news-ink-soft: rgba(244, 242, 238, .74);
  background: var(--xc-paper);
  color: var(--xc-text);
  overflow-x: clip;
}

/* ---------- 面包屑 ---------- */
.page-news .breadcrumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 22px 0 4px;
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--xc-muted);
}

.page-news .breadcrumbs a {
  color: var(--xc-muted);
  text-decoration: none;
}

.page-news .breadcrumbs a:hover,
.page-news .breadcrumbs a:focus-visible {
  color: var(--xc-signal-deep);
}

/* ---------- 首屏 ---------- */
.page-news .news-masthead {
  position: relative;
  isolation: isolate;
  padding-bottom: 44px;
}

.page-news .news-masthead__mesh {
  position: absolute;
  inset: 0 0 auto;
  height: 420px;
  z-index: -1;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(201, 198, 192, .45) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(201, 198, 192, .45) 1px, transparent 1px);
  background-size: 48px 48px;
  -webkit-mask-image: radial-gradient(130% 92% at 6% 0%, #000 0%, rgba(0, 0, 0, .22) 60%, transparent 88%);
  mask-image: radial-gradient(130% 92% at 6% 0%, #000 0%, rgba(0, 0, 0, .22) 60%, transparent 88%);
}

.page-news .news-masthead__inner {
  display: grid;
  gap: 34px;
  padding-top: 6px;
  padding-bottom: 40px;
}

.page-news .news-masthead__title {
  margin: 14px 0 0;
  max-width: 16ch;
  letter-spacing: -.02em;
  color: var(--xc-ink);
}

.page-news .news-masthead__lead {
  margin: 22px 0 0;
  max-width: 38ch;
  color: var(--xc-text);
}

.page-news .news-masthead__rhythm {
  display: grid;
  margin: 0;
  border-top: 1px solid var(--xc-line);
}

.page-news .news-rhythm-item {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 0;
  border-bottom: 1px solid var(--xc-line);
}

.page-news .news-rhythm-item dt {
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--xc-muted);
}

.page-news .news-rhythm-item dd {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 20px;
  letter-spacing: -.01em;
  color: var(--xc-ink);
  font-variant-numeric: tabular-nums;
}

/* 节奏条 */
.page-news .news-beats {
  position: relative;
  padding: 24px 0 0;
  border-top: 1px solid var(--xc-line);
}

.page-news .news-beats__label {
  display: block;
  margin-bottom: 18px;
  font-size: 12px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--xc-muted);
}

.page-news .news-beats__track {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 20px;
}

.page-news .news-beats__stop {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding-left: 24px;
}

.page-news .news-beats__stop::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 15px;
  bottom: -20px;
  width: 1px;
  background: var(--xc-line);
}

.page-news .news-beats__stop:last-child::before {
  display: none;
}

.page-news .news-beats__dot {
  position: absolute;
  left: 0;
  top: 7px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--xc-line);
}

.page-news .news-beats__stop.is-current .news-beats__dot {
  background: var(--xc-signal);
  box-shadow: 0 0 0 5px rgba(240, 90, 40, .16);
}

.page-news .news-beats__name {
  font-size: 15px;
  font-weight: 600;
  color: var(--xc-ink);
  font-variant-numeric: tabular-nums;
}

.page-news .news-beats__note {
  font-size: 13px;
  line-height: 1.6;
  color: var(--xc-muted);
}

/* ---------- 本期专题 ---------- */
.page-news .news-feature {
  position: relative;
  margin-top: 44px;
  padding: 56px 0 0;
  background: var(--xc-stand-deep);
  color: var(--xc-paper);
}

.page-news .news-feature__head {
  max-width: 860px;
  padding-bottom: 34px;
}

.page-news .news-feature__kicker {
  margin: 12px 0 0;
  font-size: 12px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--xc-lime);
}

.page-news .news-feature__title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(28px, 4.4vw, 52px);
  line-height: 1.12;
  letter-spacing: -.02em;
  color: var(--xc-paper);
}

.page-news .news-feature__focus {
  margin: 20px 0 0;
  max-width: 46ch;
  font-size: 17px;
  line-height: 1.8;
  color: var(--news-ink-soft);
}

.page-news .news-feature__media {
  margin: 0;
  width: 100%;
}

.page-news .news-feature__more {
  margin-top: 40px;
  padding: 22px 0 56px;
  border-top: 1px solid rgba(244, 242, 238, .18);
}

.page-news .news-feature__summary {
  display: flex;
  align-items: center;
  gap: 12px;
  list-style: none;
  cursor: pointer;
  font-family: var(--font-display);
  font-size: 17px;
  letter-spacing: .02em;
  color: var(--xc-paper);
}

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

.page-news .news-feature__summary::before {
  content: "+";
  flex: none;
  width: 22px;
  font-family: var(--font-display);
  font-size: 22px;
  line-height: 1;
  color: var(--xc-signal);
}

.page-news .news-feature__more[open] .news-feature__summary::before {
  content: "—";
  font-size: 18px;
}

.page-news .news-feature__summary:focus-visible {
  outline: 2px solid var(--xc-lime);
  outline-offset: 4px;
}

.page-news .news-feature__points {
  display: grid;
  gap: 22px;
  margin-top: 28px;
}

.page-news .news-feature__point h3 {
  margin: 0 0 8px;
  font-size: 18px;
  color: var(--xc-paper);
}

.page-news .news-feature__point p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--news-ink-soft);
}

/* ---------- 观察条目 ---------- */
.page-news .news-stream {
  padding: 56px 0 40px;
}

.page-news .news-stream__head {
  display: grid;
  gap: 8px;
  padding-bottom: 26px;
}

.page-news .news-stream__head .xc-h2 {
  margin: 0;
  color: var(--xc-ink);
}

.page-news .news-stream__body {
  display: grid;
  gap: 28px;
}

/* 标签筛选 */
.page-news .news-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-news .news-filter-input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.page-news .news-tag {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 9px 16px;
  border: 1px solid var(--xc-line);
  border-radius: var(--xc-pill);
  font-size: 14px;
  color: var(--xc-text);
  cursor: pointer;
  user-select: none;
  transition: background .2s var(--xc-ease), color .2s var(--xc-ease), border-color .2s var(--xc-ease);
}

.page-news .news-tag__count {
  font-family: var(--font-display);
  font-size: 13px;
  font-variant-numeric: tabular-nums;
  color: var(--xc-muted);
}

.page-news .news-filter-input:checked + .news-tag {
  background: var(--xc-signal);
  border-color: var(--xc-signal);
  color: #fff;
}

.page-news .news-filter-input:checked + .news-tag .news-tag__count {
  color: rgba(255, 255, 255, .85);
}

.page-news .news-filter-input:focus-visible + .news-tag {
  outline: 2px solid var(--xc-lake);
  outline-offset: 2px;
}

/* 纯 CSS 前端筛选 */
.page-news .news-stream:has(#nf-sup:checked) .news-entry:not([data-tag~="sup"]) {
  display: none;
}

.page-news .news-stream:has(#nf-run:checked) .news-entry:not([data-tag~="run"]) {
  display: none;
}

.page-news .news-stream:has(#nf-note:checked) .news-entry:not([data-tag~="note"]) {
  display: none;
}

.page-news .news-stream:has(#nf-story:checked) .news-entry:not([data-tag~="story"]) {
  display: none;
}

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

.page-news .news-entry {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 12px;
  padding: 22px 0;
  border-bottom: 1px solid var(--xc-line);
}

.page-news .news-entry__no {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 15px;
  line-height: 1.7;
  color: var(--xc-line);
  font-variant-numeric: tabular-nums;
}

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

.page-news .news-entry__title {
  margin: 0;
  font-size: 18px;
  line-height: 1.5;
  font-weight: 700;
}

.page-news .news-entry__link {
  display: inline-block;
  color: var(--xc-ink);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: transform .22s var(--xc-ease), color .22s var(--xc-ease), border-color .22s var(--xc-ease);
}

.page-news .news-entry__link:hover,
.page-news .news-entry__link:focus-visible {
  transform: translateX(4px);
  color: var(--xc-signal-deep);
  border-bottom-color: var(--xc-signal);
}

.page-news .news-entry__excerpt {
  margin: 8px 0 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--xc-muted);
}

.page-news .news-entry__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin: 12px 0 0;
}

.page-news .news-entry__time {
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--xc-muted);
  font-variant-numeric: tabular-nums;
}

.page-news .news-entry--figure {
  grid-template-columns: minmax(0, 1fr);
  padding: 26px 0;
}

.page-news .news-entry__figure {
  margin: 0;
  width: 100%;
}

/* ---------- 更新节奏 ---------- */
.page-news .news-cadence {
  padding: 62px 0 66px;
  background: var(--xc-stand-deep);
  color: var(--xc-paper);
}

.page-news .news-cadence__head {
  max-width: 720px;
  padding-bottom: 34px;
}

.page-news .news-cadence__title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(26px, 3.6vw, 40px);
  letter-spacing: -.02em;
  color: var(--xc-paper);
}

.page-news .news-cadence__lead {
  margin: 14px 0 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--news-ink-soft);
}

.page-news .news-cadence__grid {
  display: grid;
  gap: 26px;
  border-top: 1px solid rgba(244, 242, 238, .18);
  padding-top: 30px;
}

.page-news .news-cadence__item {
  padding-left: 18px;
  border-left: 2px solid var(--xc-stand-mid);
}

.page-news .news-cadence__item:nth-child(2) {
  border-left-color: var(--xc-lake);
}

.page-news .news-cadence__item:nth-child(3) {
  border-left-color: var(--xc-dusk);
}

.page-news .news-cadence__num {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(24px, 4vw, 36px);
  line-height: 1.1;
  letter-spacing: -.02em;
  color: var(--xc-lime);
  font-variant-numeric: tabular-nums;
}

.page-news .news-cadence__label {
  margin: 10px 0 0;
  font-size: 17px;
  color: var(--xc-paper);
}

.page-news .news-cadence__text {
  margin: 8px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--news-ink-soft);
}

.page-news .news-cadence__foot {
  margin: 34px 0 0;
  padding-top: 22px;
  border-top: 1px solid rgba(244, 242, 238, .18);
  font-size: 15px;
  line-height: 1.8;
  color: var(--news-ink-soft);
}

.page-news .news-cadence__foot .link-line {
  color: var(--xc-lime);
}

/* ---------- 投稿与合作 ---------- */
.page-news .news-contribute {
  padding: 62px 0 76px;
  background: var(--xc-paper);
}

.page-news .news-contribute__grid {
  display: grid;
  gap: 36px;
  align-items: center;
}

.page-news .news-contribute__title {
  margin: 14px 0 0;
  color: var(--xc-ink);
  max-width: 20ch;
}

.page-news .news-contribute__para {
  margin: 20px 0 0;
  max-width: 42ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--xc-text);
}

.page-news .news-contribute__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  margin: 30px 0 0;
}

.page-news .news-contribute__hint {
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--xc-muted);
}

.page-news .news-contribute__media {
  margin: 0;
  width: 100%;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-news .news-beats__track {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 32px;
  }

  .page-news .news-beats__track::before {
    content: "";
    position: absolute;
    left: 4px;
    right: 12%;
    top: 4px;
    height: 1px;
    background: var(--xc-line);
  }

  .page-news .news-beats__stop {
    padding-left: 0;
    padding-top: 24px;
  }

  .page-news .news-beats__stop::before {
    display: none;
  }

  .page-news .news-beats__dot {
    top: 0;
    left: 0;
  }

  .page-news .news-feature__points {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 34px;
  }

  .page-news .news-entry {
    grid-template-columns: 56px minmax(0, 1fr);
    gap: 20px;
    padding: 24px 0;
  }

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

  .page-news .news-cadence__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 32px;
  }
}

@media (min-width: 900px) {
  .page-news .news-masthead {
    padding-bottom: 56px;
  }

  .page-news .news-masthead__inner {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
    gap: 60px;
    align-items: end;
    padding-top: 22px;
    padding-bottom: 56px;
  }

  .page-news .news-feature {
    margin-top: 60px;
    padding-top: 72px;
  }

  .page-news .news-contribute__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
    gap: 64px;
  }
}

@media (min-width: 960px) {
  .page-news .news-stream__body {
    grid-template-columns: var(--news-rail) minmax(0, 1fr);
    gap: 56px;
    align-items: start;
  }

  .page-news .news-rail {
    position: sticky;
    top: 108px;
  }

  .page-news .news-filters {
    flex-direction: column;
    gap: 0;
    border-top: 1px solid var(--xc-line);
  }

  .page-news .news-tag {
    justify-content: space-between;
    padding: 14px 14px 14px 12px;
    border: 0;
    border-bottom: 1px solid var(--xc-line);
    border-radius: 0;
    background: transparent;
  }

  .page-news .news-filter-input:checked + .news-tag {
    background: var(--xc-signal);
    border-bottom-color: var(--xc-signal);
    color: #fff;
  }
}

/* ---------- 尊重减少动效偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-news .news-entry__link,
  .page-news .news-tag {
    transition: none;
  }

  .page-news .news-entry__link:hover,
  .page-news .news-entry__link:focus-visible {
    transform: none;
  }
}