.page-news {
  background: var(--night);
  color: var(--paper);
  padding-bottom: clamp(40px, 7vw, 88px);
}

/* ============ 封面 ============ */
.page-news .news-cover {
  position: relative;
  padding-top: clamp(20px, 4vw, 44px);
  overflow: hidden;
}

.page-news .news-cover::before {
  content: "";
  position: absolute;
  top: -180px;
  right: -140px;
  width: min(660px, 82vw);
  height: min(660px, 82vw);
  background: radial-gradient(circle at center, rgba(242, 169, 59, 0.16), transparent 68%);
  pointer-events: none;
}

.page-news .news-cover .shell {
  position: relative;
}

.page-news .news-cover__title {
  margin: 14px 0 22px;
  max-width: 18ch;
}

.page-news .news-cover__lede {
  max-width: 54ch;
  margin: 0;
  color: var(--silver);
  font-size: clamp(0.98rem, 1.5vw, 1.1rem);
  line-height: 1.8;
}

.page-news .news-cover__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.page-news .news-cover__figure {
  margin: clamp(30px, 5vw, 58px) 0 0;
}

/* ============ 共享媒体框兜底 ============ */
.page-news .media-frame {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-md);
  border: 1px solid var(--hair);
  background: var(--char);
}

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

.page-news .media-frame__caption {
  display: block;
  padding: 10px 14px;
  font-size: var(--step-note);
  color: var(--silver);
  letter-spacing: 0.02em;
}

/* ============ 四条主线索引 ============ */
.page-news .news-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--hair);
}

.page-news .news-index__item {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 6px 14px;
  padding: 22px 0;
  border-bottom: 1px solid var(--hair);
}

.page-news .news-index__no {
  font-size: 0.92rem;
  color: var(--gold);
  letter-spacing: 0.08em;
  line-height: 1.5;
}

.page-news .news-index__name {
  margin: 0;
  font-size: 1.12rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  line-height: 1.4;
}

.page-news .news-index__desc {
  grid-column: 2;
  margin: 0;
  color: var(--silver);
  font-size: 0.94rem;
  line-height: 1.75;
}

.page-news .news-index__cadence {
  grid-column: 2;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.06em;
  color: var(--cyan);
}

/* ============ 最近更新 ============ */
.page-news .news-latest {
  background: var(--char);
  border-top: 1px solid var(--hair);
  border-bottom: 1px solid var(--hair);
}

.page-news .news-latest__grid {
  display: grid;
  gap: 34px;
  margin-top: clamp(24px, 3.5vw, 40px);
}

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

.page-news .news-rail__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--silver);
}

.page-news .news-rail__list {
  list-style: none;
  margin: 0 0 26px;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 4px 18px;
}

.page-news .news-rail__link {
  display: block;
  padding: 6px 0;
  color: var(--paper);
  text-decoration: none;
  font-size: 0.94rem;
  border-bottom: 1px solid transparent;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-news .news-rail__link:hover,
.page-news .news-rail__link:focus-visible {
  color: var(--gold);
  border-bottom-color: var(--gold-line);
}

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

/* ---- 首条特稿 ---- */
.page-news .news-stream {
  min-width: 0;
}

.page-news .news-feature {
  border: 1px solid var(--gold-line);
  border-radius: var(--radius-lg);
  background: linear-gradient(165deg, var(--char-2) 0%, var(--night) 78%);
  overflow: hidden;
  margin-bottom: 34px;
  transition: border-color 0.24s var(--ease);
}

.page-news .news-feature:hover {
  border-color: var(--gold);
}

.page-news .news-feature__figure {
  border: 0;
  border-radius: 0;
  border-bottom: 1px solid var(--hair);
}

.page-news .news-feature__body {
  padding: clamp(20px, 3vw, 34px);
}

.page-news .news-feature__meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 14px;
}

.page-news .news-feature__time {
  font-size: 0.76rem;
  color: var(--silver);
}

.page-news .news-feature__title {
  margin: 0 0 14px;
  font-size: clamp(1.3rem, 2.6vw, 2rem);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.01em;
}

.page-news .news-feature__excerpt {
  margin: 0;
  color: var(--silver);
  font-size: 0.98rem;
  line-height: 1.78;
}

/* ---- 紧凑条目 ---- */
.page-news .news-entry {
  padding: 24px 0 24px 18px;
  border-top: 1px solid var(--hair);
  border-left: 2px solid transparent;
  display: grid;
  gap: 10px;
  transition: border-left-color 0.24s var(--ease), background 0.24s var(--ease);
}

.page-news .news-entry:last-child {
  border-bottom: 1px solid var(--hair);
}

.page-news .news-entry:hover {
  border-left-color: var(--gold);
  background: var(--gold-soft);
}

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

.page-news .news-entry__time {
  font-size: 0.76rem;
  color: var(--silver);
}

.page-news .news-entry__title {
  margin: 0;
  font-size: clamp(1.02rem, 1.7vw, 1.18rem);
  font-weight: 700;
  line-height: 1.45;
}

.page-news .news-entry__excerpt {
  margin: 0;
  color: var(--silver);
  font-size: 0.94rem;
  line-height: 1.78;
}

.page-news .news-entry__figure {
  margin: 4px 0 0;
  max-width: 620px;
}

/* ============ 展开组 ============ */
.page-news .expand-group {
  margin-top: 4px;
}

.page-news .expand-trigger {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 2px;
  padding: 4px 0;
  background: none;
  border: 0;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  color: var(--gold);
  cursor: pointer;
  transition: color 0.2s var(--ease);
}

.page-news .expand-trigger:hover,
.page-news .expand-trigger:focus-visible {
  color: var(--gold-lift);
}

.page-news .expand-trigger:focus-visible {
  outline: 2px solid var(--gold-line);
  outline-offset: 4px;
  border-radius: var(--radius-sm);
}

.page-news .expand-sign {
  display: inline-block;
  font-size: 1rem;
  line-height: 1;
  transition: transform 0.24s var(--ease);
}

.page-news .expand-trigger[aria-expanded="true"] .expand-sign {
  transform: rotate(45deg);
}

.page-news .expand-panel {
  margin-top: 10px;
  color: var(--silver);
  font-size: 0.92rem;
  line-height: 1.8;
}

.page-news .expand-panel[hidden] {
  display: none;
}

.page-news .expand-panel ul {
  margin: 0;
  padding-left: 18px;
  list-style: none;
}

.page-news .expand-panel li {
  position: relative;
  margin-bottom: 6px;
}

.page-news .expand-panel li::before {
  content: "—";
  position: absolute;
  left: -18px;
  color: var(--gold-deep);
}

/* ============ 专题系列 ============ */
.page-news .news-series-section .section-head {
  margin-bottom: clamp(22px, 3vw, 34px);
}

.page-news .news-series {
  display: grid;
  gap: 18px;
}

.page-news .news-serie-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: clamp(20px, 2.6vw, 28px);
  border: 1px solid var(--hair);
  border-radius: var(--radius-md);
  background: var(--char);
  transition: transform 0.24s var(--ease), border-color 0.24s var(--ease);
}

.page-news .news-serie-card:hover {
  transform: translateY(-4px);
  border-color: var(--gold-line);
}

.page-news .news-serie-card__figure {
  margin: 0 0 4px;
  border: 0;
  border-radius: var(--radius-sm);
}

.page-news .news-serie-card__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
}

.page-news .news-serie-card__name {
  margin: 0;
  font-size: 1.18rem;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.page-news .news-serie-card__count {
  font-size: 0.76rem;
  color: var(--cyan);
  white-space: nowrap;
}

.page-news .news-serie-card__desc {
  margin: 0;
  color: var(--silver);
  font-size: 0.93rem;
  line-height: 1.78;
}

.page-news .news-serie-card--wide {
  background: linear-gradient(120deg, var(--char-2) 0%, var(--night) 90%);
  border-color: var(--gold-line);
}

/* ============ 版本迭代记录 ============ */
.page-news .news-versions {
  background: var(--char);
  border-top: 1px solid var(--hair);
  border-bottom: 1px solid var(--hair);
}

.page-news .news-versions__cols {
  display: grid;
  gap: 36px;
  margin-top: clamp(22px, 3vw, 36px);
}

.page-news .news-versions__label {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.1em;
  color: var(--gold);
}

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

.page-news .news-versions__row {
  display: grid;
  grid-template-columns: 68px minmax(0, 1fr);
  gap: 4px 16px;
  padding: 18px 0;
  border-bottom: 1px solid var(--hair);
}

.page-news .news-versions__no {
  font-size: 1.02rem;
  color: var(--gold);
  letter-spacing: 0.02em;
}

.page-news .news-versions__when {
  align-self: center;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--silver);
}

.page-news .news-versions__what {
  grid-column: 2;
  margin: 0;
  font-size: 0.93rem;
  line-height: 1.75;
  color: var(--paper);
}

.page-news .news-versions__note {
  margin: 14px 0 0;
  font-size: var(--step-note);
  line-height: 1.7;
  color: var(--silver);
}

/* ============ 订阅与线索入口 ============ */
.page-news .news-subscribe {
  background: linear-gradient(120deg, var(--char) 0%, var(--night) 62%);
  border-top: 1px solid var(--gold-line);
}

.page-news .news-subscribe__inner {
  display: grid;
  gap: 32px;
}

.page-news .news-subscribe__lead h2 {
  margin: 0 0 16px;
}

.page-news .news-subscribe__text {
  margin: 0;
  max-width: 42ch;
  color: var(--silver);
  font-size: 0.98rem;
  line-height: 1.8;
}

.page-news .news-subscribe__paths {
  display: grid;
  gap: 18px;
}

.page-news .news-subscribe__path {
  padding: 4px 0 4px 18px;
  border-left: 2px solid var(--gold-deep);
}

.page-news .news-subscribe__path h3 {
  margin: 0 0 8px;
  font-size: 1.04rem;
  font-weight: 700;
}

.page-news .news-subscribe__path p {
  margin: 0 0 12px;
  color: var(--silver);
  font-size: 0.93rem;
  line-height: 1.78;
}

/* ============ 响应式 ============ */
@media (min-width: 640px) {
  .page-news .news-index__item {
    grid-template-columns: 56px 168px minmax(0, 1fr);
    gap: 22px;
    align-items: start;
  }

  .page-news .news-index__name {
    grid-column: 2;
    grid-row: 1;
    margin-top: 2px;
  }

  .page-news .news-index__desc {
    grid-column: 3;
    grid-row: 1;
  }

  .page-news .news-index__cadence {
    grid-column: 3;
    grid-row: 2;
  }

  .page-news .news-versions__row {
    grid-template-columns: 82px 104px minmax(0, 1fr);
    align-items: baseline;
  }

  .page-news .news-versions__what {
    grid-column: 3;
  }

  .page-news .news-versions__when {
    align-self: baseline;
  }

  .page-news .news-subscribe__paths {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px;
  }
}

@media (min-width: 820px) {
  .page-news .news-index__item {
    grid-template-columns: 64px 188px minmax(0, 1fr) 168px;
    gap: 26px;
  }

  .page-news .news-index__cadence {
    grid-column: 4;
    grid-row: 1;
    text-align: right;
    margin-top: 6px;
  }
}

@media (min-width: 900px) {
  .page-news .news-series {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: 20px;
  }

  .page-news .news-serie-card:nth-child(1) {
    grid-column: span 5;
  }

  .page-news .news-serie-card:nth-child(2) {
    grid-column: span 7;
  }

  .page-news .news-serie-card:nth-child(3) {
    grid-column: span 12;
  }

  .page-news .news-serie-card--wide {
    flex-direction: row;
    align-items: center;
  }

  .page-news .news-serie-card--wide .news-serie-card__body {
    max-width: 74ch;
  }

  .page-news .news-versions__cols {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 48px;
  }

  .page-news .news-subscribe__inner {
    grid-template-columns: 5fr 7fr;
    gap: 64px;
    align-items: start;
  }
}

@media (min-width: 1000px) {
  .page-news .news-latest__grid {
    grid-template-columns: 224px minmax(0, 1fr);
    gap: 72px;
  }

  .page-news .news-rail {
    position: sticky;
    top: calc(var(--header-h) + 28px);
  }

  .page-news .news-rail__list {
    flex-direction: column;
    gap: 0;
  }

  .page-news .news-rail__link {
    border-bottom: 1px solid var(--hair);
  }

  .page-news .news-rail__link:last-child {
    border-bottom: 1px solid var(--hair);
  }
}

@media (min-width: 1240px) {
  .page-news .news-series {
    gap: 24px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .news-serie-card,
  .page-news .news-entry,
  .page-news .news-feature,
  .page-news .expand-sign {
    transition: none;
  }

  .page-news .news-serie-card:hover {
    transform: none;
  }
}