.page-news {
  --news-axis-w: 208px;
  --news-shell-gap: clamp(24px, 4vw, 56px);
}

/* ---------- 首屏 ---------- */
.page-news .news-hero {
  position: relative;
  isolation: isolate;
  padding: clamp(28px, 5vw, 64px) 0 clamp(20px, 3vw, 36px);
}

.page-news .news-hero::before {
  content: "";
  position: absolute;
  top: -8px;
  right: calc(-1 * var(--gutter));
  width: min(52vw, 480px);
  height: clamp(140px, 22vw, 230px);
  background: var(--panel);
  clip-path: polygon(22% 0, 100% 0, 100% 100%, 0 76%);
  z-index: -1;
  pointer-events: none;
}

.page-news .news-hero__title {
  max-width: 16ch;
  margin: 14px 0 20px;
}

.page-news .news-hero__lead {
  max-width: 60ch;
  color: var(--muted);
}

.page-news .news-stats {
  margin-top: clamp(24px, 4vw, 40px);
  padding: 18px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px 12px;
}

.page-news .news-stats .stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
}

.page-news .news-stats .stat-value {
  font-family: var(--font-mono);
  font-size: var(--fs-28);
  font-weight: 700;
  line-height: 1.1;
  color: var(--green-300);
}

.page-news .news-stats .stat-label {
  font-size: var(--fs-14);
  color: var(--muted);
  line-height: 1.5;
}

/* ---------- 双栏外壳 ---------- */
.page-news .news-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
  padding-bottom: clamp(48px, 8vw, 88px);
}

/* ---------- 章节轴 ---------- */
.page-news .news-axis {
  padding-top: 4px;
  margin-bottom: 20px;
}

.page-news .axis-head {
  display: none;
}

.page-news .axis-list {
  list-style: none;
  margin: 0;
  padding: 0 0 8px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-news .axis-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--text);
  text-decoration: none;
  font-size: var(--fs-14);
  white-space: nowrap;
  transition: border-color 160ms var(--ease), color 160ms var(--ease), background-color 160ms var(--ease);
}

.page-news .axis-num {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: var(--fs-12);
  color: var(--green-500);
}

.page-news .axis-item:hover,
.page-news .axis-item:focus-visible {
  border-color: var(--green-500);
  color: var(--green-300);
  background: rgba(16, 191, 108, 0.08);
}

/* ---------- 章节通用 ---------- */
.page-news .news-section {
  padding-top: clamp(28px, 4vw, 44px);
}

.page-news .news-section .section-head {
  margin-bottom: clamp(18px, 3vw, 28px);
}

/* ---------- 01 专题 ---------- */
.page-news .series-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
}

.page-news .series-card {
  display: flex;
  flex-direction: column;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-news .series-card__media {
  margin: 0;
  border-radius: 0;
}

.page-news .series-body {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 16px 16px 18px;
  flex: 1;
}

.page-news .series-flags {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0;
}

.page-news .series-count {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: var(--fs-12);
  color: var(--muted);
}

.page-news .series-title {
  margin: 0;
  font-size: var(--fs-20);
  font-weight: 700;
  line-height: 1.4;
}

.page-news .series-desc {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--muted);
}

.page-news .series-next {
  margin: auto 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  font-weight: 600;
  color: var(--orange-500);
}

/* ---------- 02 条目列表 ---------- */
.page-news .news-tablist {
  overflow-x: auto;
  flex-wrap: nowrap;
  scrollbar-width: thin;
}

.page-news .news-tabs .tab {
  white-space: nowrap;
}

.page-news .tab-panel {
  padding-top: 6px;
}

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

.page-news .update-item {
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr);
  gap: 2px 12px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
  align-items: start;
}

.page-news .update-item:first-child {
  border-top: 1px solid var(--line);
}

.page-news .update-idx {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: var(--fs-14);
  color: var(--green-500);
  line-height: 1.6;
}

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

.page-news .update-title {
  margin: 0;
  font-size: var(--fs-16);
  font-weight: 700;
  line-height: 1.5;
}

.page-news .update-sum {
  margin: 4px 0 0;
  font-size: var(--fs-14);
  line-height: 1.7;
  color: var(--muted);
}

.page-news .update-tail {
  grid-column: 2;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-top: 8px;
}

/* ---------- 03 常设栏目 ---------- */
.page-news .pillar-banner {
  margin: 0 0 18px;
}

.page-news .pillar-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-news .pillar-cell {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 20px 18px 22px;
  background: var(--panel);
}

.page-news .pillar-icon {
  display: block;
  width: 34px;
  height: 34px;
  color: var(--green-500);
}

.page-news .pillar-icon svg {
  width: 100%;
  height: 100%;
  display: block;
}

.page-news .pillar-name {
  margin: 0;
  font-size: var(--fs-16);
  font-weight: 700;
}

.page-news .pillar-desc {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--muted);
}

.page-news .pillar-cadence {
  margin: auto 0 0;
  padding-top: 12px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  font-weight: 600;
  color: var(--orange-500);
}

/* ---------- 04 时间线 ---------- */
.page-news .tl-banner {
  margin: 0 0 24px;
}

.page-news .news-timeline {
  list-style: none;
  margin: 0;
  padding: 0 0 0 22px;
  border-left: 1px solid var(--line);
}

.page-news .news-timeline .timeline-item {
  position: relative;
  padding: 0 0 26px 18px;
}

.page-news .news-timeline .timeline-item:last-child {
  padding-bottom: 0;
}

.page-news .news-timeline .timeline-dot {
  position: absolute;
  left: -28px;
  top: 6px;
  width: 11px;
  height: 11px;
  background: var(--green-500);
  border-radius: 60% 60% 60% 10%;
  transform: rotate(-45deg);
}

.page-news .news-timeline .timeline-time {
  margin: 0 0 4px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.page-news .news-timeline .timeline-title {
  margin: 0 0 6px;
  font-size: var(--fs-16);
  font-weight: 700;
}

.page-news .news-timeline .timeline-body {
  margin: 0;
  max-width: 58ch;
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--muted);
}

.page-news .tl-footnote {
  margin: 22px 0 0;
  padding: 14px 16px;
  border-left: 4px solid var(--green-500);
  background: var(--panel);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: var(--fs-14);
  line-height: 1.7;
  color: var(--text);
}

/* ---------- 05 追读 ---------- */
.page-news .follow-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
}

.page-news .follow-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 20px 18px 22px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-left: 4px solid var(--green-500);
  border-radius: var(--radius);
}

.page-news .follow-title {
  margin: 0;
  font-size: var(--fs-16);
  font-weight: 700;
}

.page-news .follow-desc {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--muted);
}

.page-news .follow-card .btn {
  align-self: flex-start;
  margin-top: auto;
}

.page-news .news-cta {
  margin-top: clamp(24px, 4vw, 36px);
  padding: 22px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.page-news .news-cta__text {
  margin: 0;
  max-width: 56ch;
  font-size: var(--fs-16);
  line-height: 1.75;
}

.page-news .news-cta .btn {
  align-self: flex-start;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-news .pillar-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .page-news .news-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-news .update-item {
    grid-template-columns: 48px minmax(0, 1fr) auto;
    align-items: center;
    gap: 0 16px;
  }

  .page-news .update-tail {
    grid-column: auto;
    margin-top: 0;
    justify-content: flex-end;
    flex-wrap: nowrap;
  }
}

@media (min-width: 760px) {
  .page-news .series-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

  .page-news .news-cta {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    padding: 24px 26px;
  }

  .page-news .news-cta .btn {
    align-self: center;
    flex: 0 0 auto;
  }
}

@media (min-width: 1000px) {
  .page-news .news-shell {
    grid-template-columns: var(--news-axis-w) minmax(0, 1fr);
    gap: 0 var(--news-shell-gap);
    align-items: start;
  }

  .page-news .news-axis {
    position: sticky;
    top: calc(var(--header-h, 96px) + 28px);
    margin-bottom: 0;
    padding-top: clamp(28px, 4vw, 44px);
  }

  .page-news .axis-head {
    display: block;
    margin: 0 0 10px;
    font-family: var(--font-mono);
    font-size: var(--fs-12);
    font-weight: 600;
    letter-spacing: 0.12em;
    color: var(--muted);
    text-transform: uppercase;
  }

  .page-news .axis-list {
    display: block;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-news .axis-item {
    display: grid;
    grid-template-columns: 30px minmax(0, 1fr);
    gap: 0 10px;
    align-items: center;
    width: 100%;
    padding: 14px 0 14px 14px;
    border: 0;
    border-left: 2px solid var(--line);
    border-radius: 0;
    background: transparent;
    white-space: normal;
    font-size: var(--fs-14);
    position: relative;
    transition: border-color 160ms var(--ease), color 160ms var(--ease);
  }

  .page-news .axis-item::after {
    content: "";
    position: absolute;
    left: -6px;
    top: 50%;
    width: 10px;
    height: 10px;
    margin-top: -5px;
    border-radius: 50%;
    background: var(--green-500);
    opacity: 0;
    transition: opacity 160ms var(--ease);
  }

  .page-news .axis-item:hover,
  .page-news .axis-item:focus-visible {
    border-left-color: var(--green-500);
    background: transparent;
  }

  .page-news .axis-item:hover::after,
  .page-news .axis-item:focus-visible::after {
    opacity: 1;
  }

  .page-news .pillar-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-news .axis-item,
  .page-news .axis-item::after {
    transition: none;
  }
}