.page-news {
  --news-line: rgba(192, 138, 62, 0.28);
  --news-line-strong: rgba(192, 138, 62, 0.55);
  --news-rail: 176px;
  background: var(--ink);
  color: var(--text-body);
}

/* ---------- 页头 ---------- */
.page-news .news-hero {
  position: relative;
  padding: 40px 0 36px;
  overflow: hidden;
  border-bottom: 1px solid var(--news-line);
}

.page-news .news-hero__coord {
  position: absolute;
  top: 18px;
  right: 16px;
  color: var(--graphite);
  letter-spacing: 0.14em;
}

.page-news .news-hero__inner {
  position: relative;
  z-index: 1;
}

.page-news .news-hero__kicker {
  margin: 20px 0 12px;
  color: var(--copper-bright);
}

.page-news .news-hero__title {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.2rem, 8vw, 4.2rem);
  line-height: 1.08;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-news .news-hero__lede {
  margin: 0;
  max-width: 640px;
  font-size: 16px;
  line-height: 1.85;
  color: var(--text-body);
}

.page-news .news-hero__facts {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-top: 28px;
  padding-top: 20px;
  border-top: 1px solid var(--news-line);
}

.page-news .news-fact {
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.page-news .news-fact__num {
  font-size: 1.6rem;
  line-height: 1;
  color: var(--copper-bright);
}

.page-news .news-fact__label {
  font-size: 13px;
  color: var(--graphite);
  letter-spacing: 0.04em;
}

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

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

/* ---------- 布局 ---------- */
.page-news .news-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 32px;
  padding-top: 44px;
  padding-bottom: 56px;
}

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

.page-news .news-block,
.page-news .news-group {
  margin-bottom: 52px;
}

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

/* ---------- 节奏图 ---------- */
.page-news .news-chart {
  margin: 0 0 26px;
  padding: 18px 16px 10px;
  background: var(--ink-soft);
  border: 1px solid var(--news-line);
}

.page-news .news-chart__cap {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: baseline;
  gap: 8px;
  margin-bottom: 10px;
  color: var(--graphite);
}

.page-news .news-chart__unit {
  font-size: 11px;
  color: var(--graphite);
}

.page-news .news-chart__svg {
  display: block;
  width: 100%;
  height: auto;
}

.page-news .news-chart__axis {
  stroke: var(--news-line-strong);
  stroke-width: 1;
}

.page-news .news-chart__bars rect {
  fill: rgba(192, 138, 62, 0.5);
}

.page-news .news-chart__bars rect.is-peak {
  fill: var(--copper-bright);
}

.page-news .news-chart__labels text {
  fill: var(--graphite);
  font-family: var(--font-mono);
  font-size: 11px;
}

/* ---------- 筛选 ---------- */
.page-news .filter-bar {
  margin-bottom: 22px;
}

.page-news .filter-btn[aria-pressed="true"],
.page-news .filter-btn[data-active="true"] {
  background: var(--copper);
  border-color: var(--copper);
  color: var(--ink);
}

/* ---------- 条目列表 ---------- */
.page-news .update-list {
  border-top: 1px solid var(--news-line);
}

.page-news .update-card {
  border-bottom: 1px solid var(--news-line);
}

.page-news .update-card[hidden] {
  display: none;
}

.page-news .update-card__summary {
  position: relative;
  display: grid;
  gap: 8px;
  padding: 20px 14px 20px 22px;
  cursor: pointer;
  list-style: none;
}

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

.page-news .update-card__summary::before {
  content: "";
  position: absolute;
  left: 0;
  top: 22px;
  bottom: 22px;
  width: 2px;
  background: var(--copper);
  transition: top var(--dur) var(--ease), bottom var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-news .update-card__box[open] .update-card__summary::before {
  top: 0;
  bottom: 0;
  background: var(--copper-bright);
}

.page-news .update-card__summary:hover .update-card__title,
.page-news .update-card__box[open] .update-card__title {
  color: var(--copper-bright);
}

.page-news .update-card__line {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 12px;
}

.page-news .update-card__time {
  font-size: 12px;
  color: var(--graphite);
}

.page-news .update-card__id {
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--copper);
}

.page-news .update-card__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.05rem, 3.4vw, 1.3rem);
  line-height: 1.5;
  color: var(--white);
  transition: color var(--dur) var(--ease);
}

.page-news .update-card__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 14px;
}

.page-news .update-card__scope,
.page-news .update-card__read {
  font-size: 12px;
  color: var(--graphite);
}

.page-news .update-card__read {
  letter-spacing: 0.04em;
}

.page-news .update-card__cue {
  margin-left: auto;
  font-size: 11px;
  color: var(--copper);
  letter-spacing: 0.12em;
}

.page-news .update-card__cue::after {
  content: "展开";
}

.page-news .update-card__box[open] .update-card__cue::after {
  content: "收起";
}

.page-news .update-card__body {
  padding: 0 14px 22px 22px;
}

.page-news .update-card__body p {
  margin: 0 0 12px;
  max-width: 68ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--text-body);
}

.page-news .update-card__impact {
  padding-left: 12px;
  border-left: 2px solid var(--news-line-strong);
  color: var(--text-dim);
  font-size: 14px;
}

.page-news .update-card__impact .label {
  color: var(--cinnabar);
  margin-right: 6px;
}

/* ---------- 说明区块 ---------- */
.page-news .news-group {
  padding-top: 30px;
  border-top: 1px solid var(--news-line);
}

.page-news .news-group__split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
}

.page-news .news-group__prose p {
  margin: 0 0 16px;
  max-width: 68ch;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--text-body);
}

.page-news .news-group a,
.page-news .news-group__foot a {
  color: var(--copper-bright);
  text-decoration: none;
  border-bottom: 1px solid var(--news-line-strong);
}

.page-news .news-group a:hover,
.page-news .news-group__foot a:hover {
  border-bottom-color: var(--copper-bright);
}

.page-news .news-points {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-news .news-points li {
  position: relative;
  padding-left: 20px;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--text-dim);
}

.page-news .news-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.85em;
  width: 10px;
  height: 1px;
  background: var(--copper);
}

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

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

.page-news .news-group__foot {
  margin: 24px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--news-line);
  font-size: 14px;
  color: var(--text-dim);
}

/* ---------- 技巧卡片 ---------- */
.page-news .news-tips {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

.page-news .news-tip {
  padding: 18px 16px;
  background: var(--ink-soft);
  border: 1px solid var(--news-line);
}

.page-news .news-tip__no {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--copper-bright);
}

.page-news .news-tip__title {
  margin: 8px 0 6px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.02rem;
  color: var(--white);
}

.page-news .news-tip p:last-child {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-dim);
}

/* ---------- 订阅与回溯（反白分区） ---------- */
.page-news .news-sub {
  margin-top: 8px;
  background: var(--paper);
  color: var(--ink);
  border-top: 1px solid var(--copper);
  padding: 30px 20px;
}

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

.page-news .news-sub__eyebrow {
  margin: 0 0 10px;
  color: var(--cinnabar);
}

.page-news .news-sub__title {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.4rem, 4.6vw, 2rem);
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-news .news-sub__lead p:last-child {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(11, 13, 16, 0.78);
}

.page-news .news-sub__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.page-news .news-sub__list li {
  padding: 14px 0;
  border-bottom: 1px solid var(--paper-line);
  font-size: 14.5px;
  line-height: 1.8;
  color: rgba(11, 13, 16, 0.82);
}

.page-news .news-sub__list li:first-child {
  border-top: 1px solid var(--paper-line);
}

.page-news .news-sub__key {
  display: block;
  margin-bottom: 4px;
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--copper);
}

.page-news .news-sub a {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid var(--copper);
}

.page-news .news-sub a:hover {
  border-bottom-color: var(--ink);
}

/* ---------- 回到顶部 ---------- */
.page-news .news-topline {
  margin: 32px 0 0;
  text-align: right;
}

.page-news .news-topline__link {
  display: inline-block;
  padding: 8px 14px;
  border: 1px solid var(--news-line);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--copper);
  text-decoration: none;
}

.page-news .news-topline__link:hover {
  border-color: var(--copper-bright);
  color: var(--copper-bright);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-news .news-hero {
    padding: 56px 0 48px;
  }

  .page-news .news-hero__facts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }

  .page-news .news-chart {
    padding: 22px 24px 12px;
  }

  .page-news .update-card__summary {
    padding: 24px 20px 24px 26px;
  }

  .page-news .update-card__body {
    padding: 0 20px 26px 26px;
  }

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

  .page-news .news-sub {
    padding: 40px 32px;
  }
}

@media (min-width: 960px) {
  .page-news .news-group__split {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: start;
    gap: 34px;
  }

  .page-news .news-sub__inner {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr);
    gap: 40px;
  }
}

@media (min-width: 1200px) {
  .page-news .news-layout {
    grid-template-columns: var(--news-rail) minmax(0, 1fr);
    gap: 48px;
    padding-top: 56px;
    padding-bottom: 72px;
  }

  .page-news .news-block,
  .page-news .news-group {
    margin-bottom: 64px;
  }
}