.page-news {
  --news-line: rgba(43, 58, 85, 0.9);
  --news-line-strong: rgba(43, 58, 85, 1);
  --news-rule: rgba(23, 18, 14, 0.16);
  --news-pad: 56px;
  background: var(--ink);
  color: var(--cream);
}

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

.page-news .display {
  font-size: clamp(30px, 6.4vw, 62px);
  line-height: 1.06;
  letter-spacing: -0.02em;
  font-weight: 800;
  margin: 12px 0 0;
  color: var(--cream);
}

.page-news .lead {
  margin: 20px 0 0;
  max-width: 46ch;
  font-size: 16px;
  line-height: 1.75;
  color: var(--blue-soft);
}

.page-news .section-title {
  font-size: clamp(22px, 3.6vw, 34px);
  line-height: 1.2;
  letter-spacing: -0.01em;
  font-weight: 800;
  margin: 8px 0 0;
}

.page-news .section-note {
  margin: 12px 0 0;
  max-width: 60ch;
  font-size: 15px;
  line-height: 1.75;
  opacity: 0.82;
}

.page-news .kicker {
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--orange);
  margin: 0;
}

/* ---------- 首屏 ---------- */

.page-news .news-hero {
  position: relative;
  overflow: hidden;
  padding: calc(var(--header-space) + 44px) 0 58px;
  background:
    radial-gradient(120% 90% at 88% 0%, rgba(31, 107, 255, 0.28), transparent 62%),
    radial-gradient(80% 70% at 6% 100%, rgba(255, 107, 26, 0.16), transparent 60%),
    var(--ink);
}

.page-news .news-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(
    90deg,
    rgba(43, 58, 85, 0.5) 0 1px,
    transparent 1px var(--grid-tile)
  );
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.9), transparent 76%);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.9), transparent 76%);
  opacity: 0.7;
}

.page-news .news-hero .shell {
  z-index: 1;
}

.page-news .hero-kicker {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--orange);
}

.page-news .hero-meta {
  margin: 18px 0 0;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--haze);
}

.page-news .hero-split {
  display: grid;
  gap: 34px;
  margin-top: 26px;
}

.page-news .hero-side {
  border-top: 1px solid var(--news-line);
  padding-top: 18px;
}

.page-news .side-label {
  margin: 0 0 12px;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--haze);
}

.page-news .hero-side .index-item {
  border-bottom: 1px solid var(--news-line);
}

.page-news .hero-side .index-link {
  color: var(--blue-soft);
}

.page-news .hero-side .index-link:hover,
.page-news .hero-side .index-link:focus-visible {
  color: var(--orange);
}

/* ---------- 条目流 ---------- */

.page-news .news-feed {
  background: var(--ink-2);
  padding: var(--news-pad) 0 64px;
  border-top: 1px solid var(--news-line);
}

.page-news .feed-top {
  display: grid;
  gap: 28px;
  margin-bottom: 34px;
}

.page-news .feed-visual {
  margin: 0;
}

.page-news .feed-visual .figure-media {
  border: 1px solid var(--news-line);
  background: var(--ink-3);
}

.page-news .feed-visual .figure-caption {
  color: var(--haze);
}

.page-news .filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.page-news .filter-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 14px;
  border: 1px solid var(--news-line-strong);
  background: transparent;
  color: var(--blue-soft);
  font: inherit;
  font-size: 14px;
  line-height: 1;
  border-radius: var(--radius);
  cursor: pointer;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease),
    background-color var(--dur) var(--ease);
}

.page-news .filter-btn:hover,
.page-news .filter-btn:focus-visible {
  border-color: var(--blue);
  color: var(--cream);
}

.page-news .filter-btn[aria-pressed="true"] {
  border-color: var(--blue);
  color: var(--cream);
  background: rgba(31, 107, 255, 0.16);
  box-shadow: inset 0 -2px 0 0 var(--orange);
}

.page-news .filter-count {
  font-size: 12px;
  color: var(--orange);
}

.page-news .filter-btn[aria-pressed="true"] .filter-count {
  color: var(--orange);
}

.page-news .feed-status {
  margin: 14px 0 0;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--haze);
}

.page-news .feed-status span {
  color: var(--cream);
}

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

.page-news .entry {
  border-top: 1px solid var(--news-line);
  transition: background-color var(--dur) var(--ease);
}

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

.page-news .entry:hover {
  background: rgba(31, 107, 255, 0.07);
}

.page-news .entry-summary {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 12px;
  padding: 16px 8px;
  cursor: pointer;
  list-style: none;
}

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

.page-news .entry-num {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--orange);
  flex: 0 0 auto;
}

.page-news .entry-title {
  flex: 1 1 100%;
  font-size: 16px;
  line-height: 1.55;
  font-weight: 600;
  color: var(--cream);
}

.page-news .entry-tag {
  flex: 0 0 auto;
}

.page-news .entry-time {
  flex: 0 0 auto;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--haze);
}

.page-news .entry[open] .entry-title {
  color: var(--blue-soft);
}

.page-news .entry-body {
  padding: 0 8px 20px;
  max-width: 66ch;
}

.page-news .entry-body p {
  margin: 0;
  padding-top: 12px;
  border-top: 1px dashed var(--news-line);
  font-size: 15px;
  line-height: 1.8;
  color: var(--blue-soft);
}

/* ---------- 三次修订 ---------- */

.page-news .news-revision {
  background: var(--cream);
  color: var(--brown);
  padding: var(--news-pad) 0 60px;
}

.page-news .news-revision .section-title {
  color: var(--brown);
}

.page-news .news-revision .kicker {
  color: var(--orange);
}

.page-news .revision-track {
  display: grid;
  gap: 18px;
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
}

.page-news .rev-card {
  position: relative;
  background: var(--ink-2);
  color: var(--cream);
  padding: 22px 20px 24px;
  border-top: 3px solid var(--blue);
}

.page-news .rev-card::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(
    0deg,
    rgba(43, 58, 85, 0.35) 0 1px,
    transparent 1px var(--grid-tile)
  );
  opacity: 0.5;
}

.page-news .rev-card > * {
  position: relative;
}

.page-news .rev-card--current {
  border-top-color: var(--orange);
}

.page-news .rev-badge {
  display: inline-block;
  margin: 0;
  padding: 3px 8px;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--ink);
  background: var(--blue);
}

.page-news .rev-card--current .rev-badge {
  background: var(--orange);
}

.page-news .rev-title {
  margin: 14px 0 0;
  font-size: 19px;
  line-height: 1.35;
  font-weight: 700;
  color: var(--cream);
}

.page-news .rev-meta {
  margin: 8px 0 0;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--haze);
}

.page-news .rev-list {
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
}

.page-news .rev-item {
  position: relative;
  padding: 8px 0 8px 16px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--blue-soft);
  border-top: 1px solid var(--news-line);
}

.page-news .rev-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 17px;
  width: 6px;
  height: 6px;
  background: var(--orange);
}

.page-news .revision-figure {
  margin: 34px 0 0;
}

.page-news .revision-figure .figure-media {
  border: 1px solid var(--news-rule);
  background: var(--ink);
}

.page-news .revision-figure .figure-caption {
  color: rgba(23, 18, 14, 0.6);
}

/* ---------- 年度观察 ---------- */

.page-news .news-annual {
  background: var(--ink);
  padding: var(--news-pad) 0 64px;
  border-top: 1px solid var(--news-line);
}

.page-news .annual-grid {
  display: grid;
  gap: 28px;
  margin-top: 30px;
}

.page-news .annual-figure {
  margin: 0;
}

.page-news .annual-figure .figure-media {
  border: 1px solid var(--news-line);
  background: var(--ink-3);
}

.page-news .annual-figure .figure-caption {
  color: var(--haze);
}

.page-news .annual-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 16px;
}

.page-news .annual-item {
  border-left: 1px solid var(--news-line);
  padding: 4px 0 4px 18px;
}

.page-news .annual-idx {
  display: inline-block;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--amber);
}

.page-news .annual-title {
  margin: 8px 0 6px;
  font-size: 17px;
  line-height: 1.4;
  font-weight: 700;
  color: var(--cream);
}

.page-news .annual-item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--blue-soft);
}

/* ---------- 订阅与反馈 ---------- */

.page-news .news-subscribe {
  background: var(--cream);
  color: var(--brown);
  padding: var(--news-pad) 0 68px;
}

.page-news .news-subscribe .section-title {
  color: var(--brown);
}

.page-news .subscribe-box {
  border: 1px solid var(--news-rule);
  border-left: 3px solid var(--mint);
  padding: 26px 20px 30px;
  background: rgba(255, 255, 255, 0.42);
}

.page-news .subscribe-grid {
  display: grid;
  gap: 18px;
  margin-top: 28px;
}

.page-news .subscribe-item {
  padding: 18px 16px;
  background: var(--ink);
  color: var(--cream);
  border-top: 2px solid var(--blue);
}

.page-news .sub-idx {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--orange);
}

.page-news .sub-title {
  margin: 10px 0 8px;
  font-size: 17px;
  line-height: 1.4;
  font-weight: 700;
  color: var(--cream);
}

.page-news .subscribe-item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--blue-soft);
}

.page-news .subscribe-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-news .news-subscribe .btn-ghost {
  color: var(--brown);
  border-color: rgba(23, 18, 14, 0.35);
}

.page-news .news-subscribe .btn-ghost:hover,
.page-news .news-subscribe .btn-ghost:focus-visible {
  border-color: var(--orange);
  color: var(--orange);
}

.page-news .subscribe-foot {
  margin: 22px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--news-rule);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: rgba(23, 18, 14, 0.66);
}

/* ---------- 响应式 ---------- */

@media (min-width: 720px) {
  .page-news .entry-summary {
    display: grid;
    grid-template-columns: 56px minmax(0, 1fr) auto auto;
    gap: 16px;
    align-items: center;
    padding: 18px 10px;
  }

  .page-news .entry-title {
    grid-column: 2;
    flex: none;
    font-size: 17px;
  }

  .page-news .entry-num {
    grid-column: 1;
  }

  .page-news .entry-tag {
    grid-column: 3;
  }

  .page-news .entry-time {
    grid-column: 4;
    text-align: right;
    min-width: 108px;
  }

  .page-news .entry-body {
    padding: 0 10px 22px 82px;
  }

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

@media (min-width: 900px) {
  .page-news {
    --news-pad: 76px;
  }

  .page-news .hero-split {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    gap: 56px;
    align-items: start;
  }

  .page-news .hero-title {
    grid-column: 2;
    grid-row: 1;
  }

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

  .page-news .feed-top {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 44px;
    align-items: start;
  }

  .page-news .revision-track {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 22px;
  }

  .page-news .rev-card::after {
    content: "";
    position: absolute;
    right: -22px;
    top: 46px;
    width: 22px;
    height: 1px;
    background: var(--orange);
  }

  .page-news .rev-card:last-child::after {
    display: none;
  }

  .page-news .annual-grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    gap: 44px;
    align-items: start;
  }

  .page-news .subscribe-box {
    padding: 34px 32px 36px;
  }
}

@media (min-width: 1200px) {
  .page-news .entry-summary {
    grid-template-columns: 64px minmax(0, 1fr) 118px 132px;
  }

  .page-news .entry-body {
    padding-left: 90px;
  }

  .page-news .hero-split {
    gap: 72px;
  }
}

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