.page-news {
  --news-navy: #0B1B3A;
  --news-blue: #1E4FA3;
  --news-gold: #C9A227;
  --news-vermilion: #C8352A;
  --news-ink: #0A0A0A;
  --news-body: #26313D;
  --news-muted: #5B6B7C;
  --news-border: rgba(11, 27, 58, 0.12);
  background: var(--color-paper);
  color: var(--color-body);
  overflow-x: hidden;
}

/* 页首区 */
.page-news__hero {
  position: relative;
  overflow: hidden;
  background: var(--color-paper);
  border-bottom: 1px solid var(--news-border);
  padding: 40px 0 48px;
}

.page-news__hero::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 260px;
  height: 260px;
  background: linear-gradient(135deg, rgba(11, 27, 58, 0.05), rgba(201, 162, 39, 0.12));
  clip-path: polygon(100% 0, 0 0, 100% 100%);
  pointer-events: none;
}

.page-news__hero .site-breadcrumbs {
  position: relative;
  z-index: 1;
}

.page-news__hero-grid {
  display: grid;
  gap: 36px;
  margin-top: 40px;
  position: relative;
  z-index: 1;
}

.page-news__hero-index {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 8px;
  border-left: 4px solid var(--news-gold);
  padding-left: 20px;
}

.page-news__hero-count {
  font-family: var(--font-data);
  font-size: 76px;
  font-weight: 700;
  line-height: 0.9;
  letter-spacing: -0.06em;
  color: var(--news-navy);
}

.page-news__hero-index p {
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--news-muted);
  margin: 0;
}

.page-news__hero-copy h1 {
  font-family: var(--font-heading);
  font-size: 2.2rem;
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: -0.02em;
  color: var(--news-navy);
  margin: 0 0 20px;
}

.page-news__hero-topics {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 32px;
}

.page-news__hero-topics span {
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--news-navy);
  background: rgba(11, 27, 58, 0.05);
  border: 1px solid rgba(11, 27, 58, 0.08);
  padding: 6px 12px;
}

/* 区块通用 */
.page-news__latest {
  background: var(--color-pearl);
  padding: 64px 0 72px;
}

.page-news__series {
  background: var(--color-white);
  padding: 64px 0 72px;
}

.page-news__changelog {
  background: var(--color-paper);
  padding: 64px 0 72px;
}

.page-news__section-head {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 32px;
}

.page-news__section-head h2 {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 800;
  color: var(--news-navy);
  margin: 0;
}

.page-news__section-head--center {
  flex-direction: column;
  align-items: center;
  text-align: center;
  margin-bottom: 40px;
}

/* 筛选按钮 */
.page-news__filterbar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-news__filterbar .filter-btn {
  font-family: var(--font-heading);
  font-size: 13px;
  font-weight: 700;
  padding: 8px 16px;
  border: 1px solid var(--color-border);
  background: var(--color-white);
  color: var(--color-muted);
  cursor: pointer;
  transition: color 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

.page-news__filterbar .filter-btn:hover {
  border-color: var(--color-navy);
  color: var(--color-navy);
}

.page-news__filterbar .filter-btn.is-active {
  background: var(--color-navy);
  border-color: var(--color-navy);
  color: #FFFFFF;
}

/* 杂志式网格 */
.page-news__magazine {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

/* 特色文章 */
.page-news__feature {
  position: relative;
  display: flex;
  flex-direction: column;
  background: var(--color-white);
  border-top: 6px solid var(--color-navy);
  box-shadow: 0 2px 12px rgba(11, 27, 58, 0.04);
}

.page-news__feature::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 72px;
  height: 6px;
  background: var(--news-gold);
  z-index: 1;
}

.page-news__feature-media {
  aspect-ratio: 3 / 2;
  overflow: hidden;
  background: linear-gradient(135deg, var(--color-navy), var(--color-blue));
}

.page-news__feature-media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-news__feature-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  padding: 28px 24px 32px;
}

.page-news__feature-body h3 {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 800;
  line-height: 1.3;
  color: var(--news-navy);
  margin: 16px 0 12px;
}

.page-news__feature-body p {
  font-family: var(--font-body);
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--color-body);
  margin: 0 0 20px;
}

.page-news__feature-body .page-news__readmore {
  margin-top: auto;
}

/* 信息条 */
.page-news__meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}

.page-news__time {
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--color-muted);
}

.page-news__tag {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-heading);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  padding: 4px 10px;
  border-radius: 2px;
}

.page-news__tag--update {
  background: rgba(11, 27, 58, 0.1);
  color: var(--color-navy);
}

.page-news__tag--insight {
  background: rgba(30, 79, 163, 0.12);
  color: var(--color-blue);
}

.page-news__tag--feature {
  background: rgba(200, 53, 42, 0.1);
  color: var(--color-vermilion);
}

.page-news__tag--release {
  background: rgba(10, 10, 10, 0.08);
  color: var(--color-ink);
}

/* 小卡片 */
.page-news__card {
  position: relative;
  display: flex;
  padding: 26px 22px;
  background: var(--color-white);
  border-left: 4px solid var(--color-navy);
  box-shadow: 0 2px 12px rgba(11, 27, 58, 0.03);
}

.page-news__card[data-filter-item="行业分析"] {
  border-left-color: var(--color-blue);
}

.page-news__card[data-filter-item="专题观察"] {
  border-left-color: var(--color-vermilion);
}

.page-news__card[data-filter-item="版本发布"] {
  border-left-color: var(--color-ink);
}

.page-news__card-inner {
  display: flex;
  flex-direction: column;
  gap: 12px;
  width: 100%;
}

.page-news__card h3 {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1.45;
  color: var(--news-navy);
  margin: 0;
}

.page-news__card h3::after {
  content: "";
  display: block;
  width: 28px;
  height: 3px;
  background: var(--news-gold);
  margin-top: 12px;
}

.page-news__card p {
  font-family: var(--font-body);
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--color-muted);
  margin: 0;
}

/* 阅读链接 */
.page-news__readmore {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-heading);
  font-size: 13px;
  font-weight: 700;
  color: var(--color-blue);
  text-decoration: none;
  transition: color 0.2s ease;
}

.page-news__readmore:hover {
  color: var(--color-navy);
}

/* 深色横幅 */
.page-news__more {
  display: flex;
  flex-direction: column;
  gap: 20px;
  padding: 32px 24px;
  background: linear-gradient(120deg, var(--color-navy) 0%, #10294F 100%);
  color: #FFFFFF;
}

.page-news__more .site-kicker {
  color: var(--news-gold);
}

.page-news__more h3 {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 800;
  color: #FFFFFF;
  margin: 8px 0 4px;
}

.page-news__more p {
  font-family: var(--font-body);
  font-size: 0.875rem;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.74);
  margin: 0;
}

.page-news__more-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-news .site-btn--ghost {
  border-color: rgba(11, 27, 58, 0.18);
  color: var(--color-navy);
}

.page-news__more .site-btn--ghost {
  border-color: rgba(255, 255, 255, 0.5);
  color: #FFFFFF;
}

.page-news__more .site-btn--ghost:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: #FFFFFF;
  color: #FFFFFF;
}

/* 专题系列 */
.page-news__series-grid {
  display: grid;
  gap: 24px;
}

.page-news__series-card {
  background: var(--color-paper);
  border-top: 1px solid var(--color-border);
}

.page-news__series-cover {
  position: relative;
  aspect-ratio: 3 / 4;
  overflow: hidden;
  background: linear-gradient(160deg, var(--color-navy), var(--color-blue));
}

.page-news__series-cover img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.page-news__series-card:hover .page-news__series-cover img {
  transform: scale(1.02);
}

.page-news__series-badge {
  position: absolute;
  bottom: 14px;
  left: 14px;
  font-family: var(--font-data);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.12em;
  padding: 6px 12px;
  color: #FFFFFF;
  background: rgba(10, 10, 10, 0.75);
  border: 1px solid rgba(255, 255, 255, 0.22);
}

.page-news__series-body {
  padding: 22px 20px 26px;
}

.page-news__series-body h3 {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--news-navy);
  margin: 12px 0 8px;
}

.page-news__series-body p {
  font-family: var(--font-body);
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--color-muted);
  margin: 0;
}

.page-news__code-cover {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 14px;
  background: radial-gradient(circle at 30% 20%, #1E4FA3 0%, #0B1B3A 75%);
}

.page-news__code-symbol {
  font-family: var(--font-data);
  font-size: 64px;
  font-weight: 700;
  color: rgba(255, 255, 255, 0.85);
}

.page-news__code-label {
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.24em;
  color: rgba(255, 255, 255, 0.66);
}

/* 更新日志 */
.page-news__changelog-grid {
  display: grid;
  gap: 32px;
}

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

.page-news__log-badge {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid rgba(201, 162, 39, 0.45);
}

.page-news__log-list {
  border-top: 1px solid var(--color-border);
}

.page-news__log-item {
  border-bottom: 1px solid var(--color-border);
}

.page-news__log-item summary {
  list-style: none;
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 12px;
  padding: 20px 4px;
  cursor: pointer;
}

.page-news__log-item summary::-webkit-details-marker {
  display: none;
}

.page-news__log-item summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-data);
  font-size: 24px;
  line-height: 1;
  color: var(--news-gold);
  transition: transform 0.2s ease;
}

.page-news__log-item[open] summary::after {
  content: "−";
}

.page-news__log-version {
  font-family: var(--font-data);
  font-size: 14px;
  font-weight: 600;
  color: var(--news-gold);
  min-width: 52px;
}

.page-news__log-title {
  font-family: var(--font-heading);
  font-size: 15px;
  font-weight: 700;
  color: var(--news-navy);
}

.page-news__log-time {
  font-family: var(--font-data);
  font-size: 12px;
  color: var(--color-muted);
  margin-left: 6px;
}

.page-news__log-detail {
  padding: 0 4px 24px 72px;
}

.page-news__log-detail p {
  font-family: var(--font-body);
  font-size: 0.875rem;
  line-height: 1.75;
  color: var(--color-body);
  margin: 0;
}

/* 侧边栏 */
.page-news__sidebar {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.page-news__tagcloud {
  position: relative;
  overflow: hidden;
  padding: 28px 24px;
  background: var(--color-navy);
  color: #FFFFFF;
}

.page-news__tagcloud-img {
  position: absolute;
  top: 0;
  right: 0;
  width: 120px;
  height: 120px;
  object-fit: cover;
  opacity: 0.35;
  pointer-events: none;
  z-index: 0;
}

.page-news__tagcloud > * {
  position: relative;
  z-index: 1;
}

.page-news__tagcloud .site-kicker {
  color: var(--news-gold);
}

.page-news__tagcloud h3 {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 800;
  color: #FFFFFF;
  margin: 10px 0 2px;
}

.page-news__tagcloud > p {
  font-family: var(--font-body);
  font-size: 12px;
  color: rgba(255, 255, 255, 0.56);
  margin: 0 0 20px;
}

.page-news__tagcloud-body {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-news__tagcloud-item {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 5px 12px;
  border-radius: 100px;
  font-family: var(--font-heading);
  font-weight: 700;
  background: rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.88);
}

.page-news__tagcloud-item--lg {
  font-size: 16px;
  padding: 7px 14px;
  background: rgba(201, 162, 39, 0.25);
  color: #F2D77E;
}

.page-news__tagcloud-item--md {
  font-size: 14px;
}

.page-news__tagcloud-item--sm {
  font-size: 12px;
  opacity: 0.7;
}

.page-news__sidebar-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  box-shadow: 0 2px 12px rgba(11, 27, 58, 0.03);
  padding: 28px 24px;
}

.page-news__sidebar-card h3 {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--news-navy);
  margin: 8px 0 8px;
}

.page-news__sidebar-card p {
  font-family: var(--font-body);
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--color-muted);
  margin: 0 0 20px;
}

.page-news__sidebar-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* 桌面端断点 */
@media (min-width: 900px) {
  .page-news__hero {
    padding: 64px 0 80px;
  }

  .page-news__hero-grid {
    grid-template-columns: 220px 1fr;
    gap: 48px;
    align-items: end;
  }

  .page-news__hero-copy h1 {
    font-size: 3.4rem;
    max-width: 900px;
  }

  .page-news__hero-topics {
    margin-top: 48px;
    gap: 12px;
  }

  .page-news__latest {
    padding: 96px 0;
  }

  .page-news__series {
    padding: 96px 0;
  }

  .page-news__changelog {
    padding: 96px 0;
  }

  .page-news__section-head {
    flex-direction: row;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: 48px;
  }

  .page-news__section-head h2 {
    font-size: 2.6rem;
  }

  .page-news__section-head--center {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .page-news__magazine {
    grid-template-columns: repeat(12, 1fr);
    gap: 32px 28px;
  }

  .page-news__feature {
    grid-column: span 8;
  }

  .page-news__card {
    grid-column: span 4;
  }

  .page-news__more {
    grid-column: span 8;
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    padding: 36px 40px;
  }

  .page-news__series-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
  }

  .page-news__changelog-grid {
    grid-template-columns: 8fr 4fr;
    gap: 48px;
  }

  .page-news__log-badge {
    width: 84px;
    height: 84px;
  }

  .page-news__tagcloud-img {
    width: 140px;
    height: 140px;
  }
}