.page-news {
  --news-serif-xl: clamp(2.1rem, 6.2vw, 4.4rem);
  --news-serif-lg: clamp(1.7rem, 3.6vw, 3.4rem);
  --news-gap: clamp(20px, 3vw, 40px);
  color: var(--ky-snow);
}

.page-news .news-crumb {
  padding-top: 24px;
}

/* ---------- 首屏 ---------- */
.page-news .news-masthead {
  padding-top: clamp(28px, 5vw, 64px);
}

.page-news .news-masthead__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--news-gap);
  align-items: start;
}

.page-news .news-masthead__title {
  font-family: var(--ky-font-serif);
  font-weight: 900;
  font-size: var(--news-serif-xl);
  line-height: 1.06;
  letter-spacing: -0.02em;
  margin: 16px 0 0;
  max-width: 16ch;
}

.page-news .news-masthead__lead {
  margin-top: 22px;
  max-width: 46ch;
  color: var(--ky-fog);
}

.page-news .news-masthead__panel {
  border: 2px solid var(--ky-line);
  background: var(--ky-ink-2);
  padding: 20px 22px 8px;
}

.page-news .news-masthead__panel-title {
  font-family: var(--ky-font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--ky-cyan);
  margin: 0 0 12px;
}

.page-news .news-stats {
  margin: 0;
}

.page-news .news-stats__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 0;
  border-top: 1px solid var(--ky-line-soft);
}

.page-news .news-stats__row dt {
  font-size: 14px;
  color: var(--ky-mist);
}

.page-news .news-stats__row dd {
  margin: 0;
  display: flex;
  align-items: baseline;
  gap: 4px;
}

.page-news .news-stats__num {
  font-family: var(--ky-font-mono);
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--ky-snow);
}

.page-news .news-stats__unit {
  font-family: var(--ky-font-mono);
  font-size: 12px;
  color: var(--ky-mist);
}

/* ---------- 章节头 ---------- */
.page-news .news-head {
  border-top: 2px solid var(--ky-line);
  padding-top: 20px;
  margin-bottom: clamp(24px, 3vw, 36px);
}

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

.page-news .news-head__title {
  font-family: var(--ky-font-serif);
  font-weight: 600;
  font-size: clamp(1.45rem, 2.8vw, 2.35rem);
  line-height: 1.25;
  margin: 0;
}

.page-news .news-head__note {
  margin: 10px 0 0;
  color: var(--ky-mist);
  font-size: 15px;
}

/* ---------- 四栏目 ---------- */
.page-news .news-cats {
  list-style: none;
  margin: 0 0 clamp(24px, 3vw, 36px);
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  border-top: 1px solid var(--ky-line-soft);
}

.page-news .news-cat {
  padding: 20px 0;
  border-bottom: 1px solid var(--ky-line-soft);
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 6px 16px;
}

.page-news .news-cat__no {
  font-family: var(--ky-font-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--ky-cyan);
  padding-top: 4px;
}

.page-news .news-cat__name {
  font-family: var(--ky-font-serif);
  font-weight: 600;
  font-size: 22px;
  margin: 0;
  grid-column: 2;
}

.page-news .news-cat__desc {
  grid-column: 2;
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ky-fog);
}

.page-news .news-cat__freq {
  grid-column: 2;
  margin: 0;
  font-family: var(--ky-font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--ky-mist);
}

.page-news .news-ratio {
  margin-bottom: clamp(24px, 3vw, 36px);
}

.page-news .news-ratio__label {
  font-family: var(--ky-font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--ky-mist);
  margin: 0 0 10px;
}

.page-news .news-ratio__bar {
  display: block;
  width: 100%;
  height: 8px;
}

.page-news .news-ratio__legend {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  font-family: var(--ky-font-mono);
  font-size: 12px;
  color: var(--ky-fog);
}

.page-news .news-ratio__legend li {
  display: flex;
  align-items: center;
  gap: 8px;
}

.page-news .news-ratio__chip {
  width: 10px;
  height: 10px;
  display: inline-block;
}

.page-news .news-ratio__chip--cyan { background: var(--ky-cyan); }
.page-news .news-ratio__chip--mist { background: var(--ky-mist); }
.page-news .news-ratio__chip--amber { background: var(--ky-amber); }
.page-news .news-ratio__chip--verify { background: var(--ky-verify); }

.page-news .news-columns__media {
  margin: 0;
}

/* ---------- 置顶 ---------- */
.page-news .news-feature__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--news-gap);
  align-items: start;
  border-top: 2px solid var(--ky-line);
  padding-top: clamp(24px, 3vw, 40px);
}

.page-news .news-feature__meta {
  font-family: var(--ky-font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--ky-cyan);
  margin: 0 0 18px;
}

.page-news .news-feature__title {
  font-family: var(--ky-font-serif);
  font-weight: 900;
  font-size: var(--news-serif-lg);
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin: 0;
  max-width: 20ch;
}

.page-news .news-feature__lead {
  margin: 20px 0 0;
  max-width: 48ch;
  color: var(--ky-fog);
  line-height: 1.8;
}

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

.page-news .news-feature__media {
  margin: 0;
}

/* ---------- 筛选按钮 ---------- */
.page-news .news-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-news .news-filter__btn {
  font-family: var(--ky-font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  padding: 8px 15px;
  border-radius: 999px;
  border: 2px solid var(--ky-line);
  background: transparent;
  color: var(--ky-mist);
  cursor: pointer;
  transition: border-color 160ms ease, color 160ms ease, background 160ms ease;
}

.page-news .news-filter__btn:hover {
  border-color: var(--ky-cyan);
  color: var(--ky-snow);
}

.page-news .news-filter__btn[aria-pressed="true"] {
  background: var(--ky-snow);
  border-color: var(--ky-snow);
  color: var(--ky-ink);
}

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

.page-news .news-feed__list > li {
  border-bottom: 1px solid var(--ky-line-soft);
}

.page-news .news-entry {
  position: relative;
  padding: 0;
  transition: transform 180ms ease;
}

.page-news .news-entry::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  bottom: 8px;
  width: 3px;
  background: var(--ky-cyan);
  opacity: 0;
  transition: opacity 180ms ease;
}

.page-news .news-entry:hover {
  transform: translateX(4px);
}

.page-news .news-entry:hover::before,
.page-news .news-entry[open]::before {
  opacity: 1;
}

.page-news .news-entry__summary {
  list-style: none;
  cursor: pointer;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 6px;
  padding: 18px 0 18px 14px;
}

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

.page-news .news-entry__tag {
  font-family: var(--ky-font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  padding: 3px 8px;
  border: 1px solid var(--ky-line);
  color: var(--ky-mist);
  justify-self: start;
}

.page-news .news-entry__tag--preview { color: var(--ky-cyan); border-color: var(--ky-cyan-deep); }
.page-news .news-entry__tag--release { color: var(--ky-amber); border-color: var(--ky-amber-deep); }
.page-news .news-entry__tag--archive { color: var(--ky-snow); border-color: var(--ky-line); }
.page-news .news-entry__tag--note { color: var(--ky-verify); border-color: var(--ky-line); }

.page-news .news-entry__title {
  font-family: var(--ky-font-serif);
  font-weight: 600;
  font-size: 19px;
  line-height: 1.45;
  margin: 0;
  color: var(--ky-snow);
}

.page-news .news-entry__abstract {
  display: block;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ky-mist);
}

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

.page-news .news-entry__more {
  margin: 0 0 18px 14px;
  padding: 14px 16px;
  border-left: 2px solid var(--ky-line);
  background: var(--ky-ink-2);
  font-size: 14px;
  line-height: 1.8;
  color: var(--ky-fog);
  max-width: 68ch;
}

.page-news .news-feed__media {
  margin: clamp(28px, 4vw, 48px) 0 0;
}

/* ---------- 发布节奏 ---------- */
.page-news .news-cadence__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--news-gap);
  align-items: start;
  border-top: 2px solid var(--ky-line);
  padding-top: clamp(24px, 3vw, 40px);
}

.page-news .news-cadence__lead {
  margin: 16px 0 0;
  max-width: 52ch;
  color: var(--ky-fog);
  line-height: 1.8;
}

.page-news .news-cadence__list {
  margin: 26px 0 0;
  padding: 0;
}

.page-news .news-cadence__item {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 4px;
  padding: 14px 0;
  border-top: 1px solid var(--ky-line-soft);
}

.page-news .news-cadence__item dt {
  font-family: var(--ky-font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--ky-amber);
}

.page-news .news-cadence__item dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--ky-fog);
}

.page-news .news-cadence__counts {
  margin-top: 26px;
  border: 2px solid var(--ky-line);
  padding: 18px 20px;
}

.page-news .news-cadence__counts-label {
  margin: 0 0 14px;
  font-size: 14px;
  color: var(--ky-mist);
}

.page-news .news-cadence__counts-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 12px 28px;
}

.page-news .news-cadence__counts-list li {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.page-news .news-cadence__count {
  font-family: var(--ky-font-mono);
  font-size: 20px;
  font-weight: 700;
  color: var(--ky-snow);
}

.page-news .news-cadence__body .ky-actions {
  margin-top: 26px;
}

.page-news .news-cadence__media {
  margin: 0;
}

/* ---------- 专题 ---------- */
.page-news .news-series__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
  border-top: 1px solid var(--ky-line-soft);
}

.page-news .news-series__item {
  padding: 22px 0;
  border-bottom: 1px solid var(--ky-line-soft);
  display: grid;
  gap: 8px;
}

.page-news .news-series__no {
  font-family: var(--ky-font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--ky-cyan);
}

.page-news .news-series__name {
  font-family: var(--ky-font-serif);
  font-weight: 600;
  font-size: 21px;
  line-height: 1.4;
  margin: 0;
}

.page-news .news-series__desc {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ky-fog);
  max-width: 46ch;
}

.page-news .news-series__meta {
  margin: 0;
  font-family: var(--ky-font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--ky-mist);
}

/* ---------- 订阅 ---------- */
.page-news .news-subscribe__box {
  border: 2px solid var(--ky-cyan-deep);
  background: var(--ky-ink-2);
  padding: clamp(22px, 3.5vw, 44px);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--news-gap);
  align-items: start;
  box-shadow: 8px 8px 0 rgba(34, 211, 238, 0.14);
}

.page-news .news-subscribe__title {
  font-family: var(--ky-font-serif);
  font-weight: 600;
  font-size: clamp(1.5rem, 3vw, 2.4rem);
  line-height: 1.25;
  margin: 0;
}

.page-news .news-subscribe__lead {
  margin: 16px 0 0;
  max-width: 50ch;
  color: var(--ky-fog);
  line-height: 1.8;
}

.page-news .news-subscribe__box .ky-actions {
  margin-top: 24px;
}

.page-news .news-subscribe__points {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-news .news-subscribe__points li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  padding: 14px 0;
  border-top: 1px solid var(--ky-line-soft);
  font-size: 14px;
  line-height: 1.75;
  color: var(--ky-fog);
}

.page-news .news-subscribe__points .ky-dot {
  margin-top: 8px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-news .news-entry__summary {
    grid-template-columns: 106px minmax(0, 1fr) 128px;
    gap: 8px 20px;
    align-items: start;
    padding-left: 18px;
  }

  .page-news .news-entry__title {
    font-size: 21px;
  }

  .page-news .news-entry__abstract {
    grid-column: 2;
  }

  .page-news .news-entry__when {
    grid-column: 3;
    grid-row: 1;
    justify-self: end;
    text-align: right;
  }

  .page-news .news-entry__tag {
    grid-column: 1;
    grid-row: 1;
  }

  .page-news .news-entry__more {
    margin-left: 18px;
  }

  .page-news .news-series__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    column-gap: 28px;
    border-top: 0;
  }

  .page-news .news-series__item {
    border-top: 2px solid var(--ky-line);
    border-bottom: 0;
    padding-top: 20px;
  }
}

@media (min-width: 1000px) {
  .page-news .news-masthead__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: clamp(32px, 6vw, 96px);
  }

  .page-news .news-head--feed {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: end;
  }

  .page-news .news-cats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: clamp(28px, 5vw, 72px);
    border-top: 0;
  }

  .page-news .news-cat {
    border-top: 1px solid var(--ky-line-soft);
  }

  .page-news .news-feature__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    gap: clamp(32px, 6vw, 88px);
  }

  .page-news .news-cadence__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    gap: clamp(32px, 6vw, 88px);
  }

  .page-news .news-cadence__item {
    grid-template-columns: 120px minmax(0, 1fr);
    gap: 8px 20px;
  }

  .page-news .news-subscribe__box {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: clamp(32px, 6vw, 80px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .news-entry,
  .page-news .news-entry::before,
  .page-news .news-filter__btn {
    transition: none;
  }

  .page-news .news-entry:hover {
    transform: none;
  }
}