.page-news {
  --news-line: rgba(240, 244, 248, 0.16);
  --news-text-muted-light: #5A6B7A;
  background: #F0F4F8;
  color: #1A202C;
  overflow-x: hidden;
}

.page-news-container {
  width: min(calc(100% - 40px), 1200px);
  margin-inline: auto;
}

.page-news-section-index {
  font-family: var(--font-data);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--color-accent);
  margin-bottom: var(--space-2);
}

.page-news-sec-title {
  font-family: var(--font-heading);
  font-size: clamp(24px, 3vw, 36px);
  font-weight: 800;
  letter-spacing: -0.01em;
  margin-bottom: var(--space-3);
}

.page-news-sec-title-light {
  color: var(--color-text-light);
}

.page-news-sec-desc {
  color: var(--news-text-muted-light);
  line-height: 1.7;
  max-width: 48ch;
}

.page-news-sr-title {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

/* ===== Hero ===== */
.page-news-hero {
  position: relative;
  background-color: var(--color-bg-primary);
  color: var(--color-text-light);
  padding-block: var(--space-6) var(--space-8);
  border-bottom: 2px solid var(--color-accent);
}

.page-news-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--news-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--news-line) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
}

.page-news-hero .breadcrumb-link {
  color: rgba(240, 244, 248, 0.6);
}

.page-news-hero .breadcrumb-link:hover {
  color: var(--color-accent);
}

.page-news-hero .breadcrumb-current {
  color: var(--color-text-light);
}

.page-news-breadcrumb-sep {
  color: rgba(240, 244, 248, 0.4);
}

.page-news-hero-grid {
  display: grid;
  gap: var(--space-6);
  align-items: start;
  position: relative;
}

.page-news-hero-copy {
  max-width: 640px;
}

.page-news-hero-title {
  font-family: var(--font-heading);
  font-size: clamp(30px, 5vw, 56px);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-4);
}

.page-news-hero-desc {
  font-size: 17px;
  line-height: 1.7;
  color: rgba(240, 244, 248, 0.72);
  max-width: 52ch;
}

.page-news-hero-panel {
  border: var(--border-w) solid rgba(240, 244, 248, 0.2);
  background: var(--color-bg-secondary);
  padding: var(--space-5);
  box-shadow: 6px 6px 0 0 rgba(255, 107, 53, 0.35);
}

.page-news-hero-panel-title {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: rgba(240, 244, 248, 0.5);
  border-bottom: 1px solid rgba(240, 244, 248, 0.14);
  padding-bottom: var(--space-3);
  margin-bottom: var(--space-3);
}

.page-news-hero-stats {
  display: grid;
  gap: var(--space-2);
  margin: 0;
}

.page-news-hero-stats div {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-4);
  padding-block: var(--space-2);
  border-bottom: 1px solid rgba(240, 244, 248, 0.1);
}

.page-news-hero-stats div:last-child {
  border-bottom: none;
}

.page-news-hero-stats dt {
  color: rgba(240, 244, 248, 0.55);
  font-size: 13px;
}

.page-news-hero-stats dd {
  margin: 0;
  font-size: 20px;
  font-weight: 700;
  color: var(--color-accent);
}

.page-news-hero-figure {
  grid-column: 1 / -1;
  position: relative;
  border: var(--border-w) solid rgba(240, 244, 248, 0.22);
  background: var(--color-bg-secondary);
  box-shadow: 8px 8px 0 0 rgba(255, 107, 53, 0.5);
  margin: 0;
}

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

/* ===== 最新动态 + 筛选 ===== */
.page-news-listing {
  background: var(--color-bg-light);
  color: var(--color-text);
  padding-block: var(--space-7) var(--space-8);
}

.page-news-listing-head {
  display: grid;
  gap: var(--space-6);
  margin-bottom: var(--space-6);
}

.page-news-filter {
  border: var(--border-w) solid var(--color-bg-primary);
  background: #fff;
  box-shadow: var(--shadow-card);
  padding: var(--space-5);
}

.page-news-filter-title {
  font-family: var(--font-data);
  font-size: 14px;
  letter-spacing: 0.05em;
  color: var(--color-bg-primary);
  margin: 0 0 var(--space-4);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.page-news-filter-title::after {
  content: "";
  height: 2px;
  background: var(--color-accent);
  flex: 1;
}

.page-news-filter-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.page-news-filter-input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.page-news-filter-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-data);
  font-size: 13px;
  letter-spacing: 0.04em;
  border: 2px solid var(--color-bg-primary);
  background: var(--color-bg-light);
  color: var(--color-bg-primary);
  padding: 9px 14px;
  box-shadow: 4px 4px 0 0 rgba(10, 25, 47, 0.18);
  cursor: pointer;
  user-select: none;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.page-news-filter-btn:hover {
  transform: translate(-2px, -2px);
  box-shadow: 6px 6px 0 0 var(--color-accent);
  border-color: var(--color-accent);
}

.page-news-filter-input:focus-visible + .page-news-filter-btn {
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
}

.page-news-filter-input:checked + .page-news-filter-btn {
  background: var(--color-bg-primary);
  color: var(--color-text-light);
  box-shadow: 4px 4px 0 0 var(--color-accent);
}

.page-news-listing:has(#filter-update:checked) .page-news-item:not(.is-update) {
  display: none;
}

.page-news-listing:has(#filter-venue:checked) .page-news-item:not(.is-venue) {
  display: none;
}

.page-news-listing:has(#filter-team:checked) .page-news-item:not(.is-team) {
  display: none;
}

.page-news-listing:has(#filter-data:checked) .page-news-item:not(.is-data) {
  display: none;
}

.page-news-listing-media {
  display: grid;
  gap: var(--space-5);
  align-items: center;
  margin-bottom: var(--space-8);
}

.page-news-filter-figure {
  border: var(--border-w) solid var(--color-bg-primary);
  background: var(--color-bg-light);
  box-shadow: 6px 6px 0 0 var(--color-bg-secondary);
  margin: 0;
}

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

.page-news-filter-tip {
  border-left: 3px solid var(--color-accent);
  padding-left: var(--space-4);
  color: var(--news-text-muted-light);
  font-size: 14px;
  line-height: 1.7;
  margin: 0;
}

/* ===== 时间线 ===== */
.page-news-timeline {
  --tl-offset: 20px;
  position: relative;
  padding-left: var(--tl-offset);
  border-left: 2px solid var(--color-bg-primary);
  display: grid;
  gap: var(--space-5);
}

.page-news-item {
  position: relative;
  background: #fff;
  border: 2px solid var(--color-bg-primary);
  box-shadow: 4px 4px 0 0 rgba(26, 32, 44, 0.12);
  padding: var(--space-5);
  transition: transform 0.2s ease, box-shadow 0.3s ease;
}

.page-news-item::before {
  content: "";
  position: absolute;
  left: calc(-1 * (var(--tl-offset) + 6px));
  top: 24px;
  width: 12px;
  height: 12px;
  border-radius: 999px;
  background: var(--color-accent);
  border: 2px solid var(--color-bg-light);
  box-shadow: 0 0 0 2px var(--color-bg-primary);
  z-index: 1;
}

.page-news-item:hover {
  transform: translate(-2px, -2px);
  box-shadow: 8px 8px 0 0 var(--color-accent);
}

.page-news-item-meta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
}

.page-news-item-meta time {
  font-size: 13px;
  color: var(--news-text-muted-light);
}

.page-news-item-title {
  font-family: var(--font-heading);
  font-size: clamp(19px, 2vw, 24px);
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: var(--space-3);
  color: var(--color-bg-primary);
}

.page-news-item-summary {
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text);
  margin-bottom: var(--space-3);
}

.page-news-item-expand {
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transform: translateY(-4px);
  transition: max-height 0.3s ease, opacity 0.3s ease, transform 0.3s ease, margin 0.3s ease;
  font-size: 15px;
  line-height: 1.7;
  color: var(--news-text-muted-light);
  border-left: 3px solid var(--color-accent-2);
  padding-left: var(--space-4);
}

.page-news-item:hover .page-news-item-expand,
.page-news-item:focus-within .page-news-item-expand {
  max-height: 180px;
  opacity: 1;
  transform: translateY(0);
  margin-bottom: var(--space-3);
}

.page-news-item-link {
  display: inline-block;
  font-family: var(--font-data);
  font-size: 14px;
  color: var(--color-accent);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: border-color 0.2s ease;
}

.page-news-item-link:hover {
  border-bottom-color: var(--color-accent);
}

/* ===== 近期专题 ===== */
.page-news-feature {
  background: var(--color-bg-primary);
  padding-block: var(--space-7) var(--space-8);
}

.page-news-feature-card {
  display: grid;
  gap: var(--space-6);
  margin-top: var(--space-6);
  border: var(--border-w) solid var(--color-accent);
  background: var(--color-bg-secondary);
  box-shadow: 8px 8px 0 0 rgba(255, 107, 53, 0.4);
  padding: var(--space-6);
}

.page-news-feature-kicker {
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--color-accent);
  margin-bottom: var(--space-3);
}

.page-news-feature-title {
  font-family: var(--font-heading);
  font-size: clamp(22px, 3vw, 32px);
  font-weight: 800;
  line-height: 1.25;
  color: var(--color-text-light);
  margin-bottom: var(--space-4);
}

.page-news-feature-desc {
  color: rgba(240, 244, 248, 0.72);
  font-size: 16px;
  line-height: 1.75;
  margin-bottom: var(--space-4);
}

.page-news-feature-code {
  display: grid;
  gap: var(--space-3);
  align-content: start;
  border-left: 2px solid var(--color-accent);
  padding-left: var(--space-4);
  font-size: 13px;
  color: rgba(240, 244, 248, 0.55);
  line-height: 1.6;
}

.page-news-feature-code span::before {
  content: "▹ ";
  color: var(--color-accent);
}

/* ===== 数据更新记录 ===== */
.page-news-changelog {
  background: var(--color-bg-deep);
  padding-block: var(--space-7) var(--space-8);
}

.page-news-changelog-grid {
  display: grid;
  gap: var(--space-6);
  margin-top: var(--space-6);
}

.page-news-changelog-list {
  border: var(--border-w) solid rgba(240, 244, 248, 0.16);
  background: var(--color-bg-primary);
}

.page-news-changelog-row {
  display: grid;
  grid-template-columns: 88px 1fr;
  gap: var(--space-4);
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid rgba(240, 244, 248, 0.1);
}

.page-news-changelog-row:last-child {
  border-bottom: none;
}

.page-news-changelog-label {
  color: var(--color-accent);
  font-size: 13px;
  padding-top: 2px;
}

.page-news-changelog-value {
  font-size: 15px;
  line-height: 1.6;
  color: var(--color-text-light);
}

.page-news-changelog-media {
  display: grid;
  gap: var(--space-5);
}

.page-news-changelog-figure {
  border: var(--border-w) solid rgba(240, 244, 248, 0.18);
  background: var(--color-bg-primary);
  box-shadow: 4px 4px 0 0 rgba(255, 107, 53, 0.3);
  margin: 0;
}

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

/* ===== 响应式 ===== */
@media (min-width: 700px) {
  .page-news-listing-media {
    grid-template-columns: 400px 1fr;
  }

  .page-news-timeline {
    --tl-offset: 30px;
  }

  .page-news-hero-figure {
    margin-top: var(--space-2);
  }
}

@media (min-width: 900px) {
  .page-news-hero-grid {
    grid-template-columns: 1fr 280px;
    gap: var(--space-7);
  }

  .page-news-hero-figure {
    grid-column: 1 / -1;
  }

  .page-news-listing-head {
    grid-template-columns: 1fr 400px;
    align-items: end;
  }

  .page-news-feature-card {
    grid-template-columns: 1fr 220px;
  }

  .page-news-changelog-grid {
    grid-template-columns: 1fr 440px;
  }
}

@media (max-width: 480px) {
  .page-news-changelog-row {
    grid-template-columns: 76px 1fr;
    padding-inline: var(--space-4);
  }

  .page-news-hero-stats {
    grid-template-columns: 1fr 1fr;
  }

  .page-news-hero-stats div {
    border-bottom: 0;
  }

  .page-news-filter-btn {
    flex: 1 1 calc(50% - 8px);
    justify-content: center;
  }
}