.page-news {
  --news-sidebar-w: 320px;
  --news-section-gap: 48px;
  --news-line: rgba(11, 30, 59, 0.1);
  background: var(--c-light);
  color: var(--c-navy);
  line-height: 1.7;
}

/* ========== Hero ========== */
.page-news__hero {
  position: relative;
  overflow: hidden;
  background: var(--c-navy);
  color: var(--c-white);
  padding: 40px 0 72px;
}

.page-news__hero::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 56%;
  height: 8px;
  background: linear-gradient(90deg, var(--c-orange) 0%, var(--c-gold) 100%);
  z-index: 2;
}

.page-news__hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -26px;
  height: 52px;
  background: var(--c-light);
  transform: skewY(-1.4deg);
  transform-origin: left bottom;
  z-index: 1;
}

.page-news__hero .container {
  position: relative;
  z-index: 3;
}

.page-news__hero .breadcrumb {
  margin-bottom: 32px;
}

.page-news__hero .breadcrumb a {
  color: rgba(255, 255, 255, 0.72);
  text-decoration: none;
}

.page-news__hero .breadcrumb a:hover {
  color: var(--c-gold);
}

.page-news__hero .breadcrumb [aria-current="page"] {
  color: var(--c-white);
}

.page-news__hero-grid {
  display: grid;
  gap: 40px;
}

.page-news__hero-kicker {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--c-gold);
  border-left: 4px solid var(--c-orange);
  padding-left: 12px;
  margin: 0 0 14px;
}

.page-news__hero h1 {
  font-size: clamp(34px, 6vw, 60px);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -0.03em;
  margin: 0 0 18px;
}

.page-news__hero-desc {
  font-size: 15px;
  line-height: 1.75;
  color: rgba(255, 255, 255, 0.8);
  max-width: 560px;
  margin: 0;
}

.page-news__hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.page-news__hero-stat {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.14);
  padding: 14px 10px;
  text-align: center;
}

.page-news__hero-num {
  display: block;
  font-family: var(--font-mono);
  font-size: 24px;
  font-weight: 700;
  color: var(--c-orange);
  line-height: 1.2;
}

.page-news__hero-label {
  display: block;
  font-size: 12px;
  color: rgba(255, 255, 255, 0.62);
  margin-top: 4px;
}

/* ========== 布局 ========== */
.page-news__layout {
  position: relative;
  padding-top: 40px;
  padding-bottom: 64px;
}

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

/* ========== 主要内容区 ========== */
.page-news__section {
  margin-bottom: var(--news-section-gap);
}

.page-news__section-head {
  margin-bottom: 20px;
}

.page-news__section-head h2 {
  font-size: 26px;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin: 0 0 6px;
  display: inline-flex;
  align-items: center;
}

.page-news__section-head h2::before {
  content: "";
  display: inline-block;
  width: 10px;
  height: 20px;
  background: var(--c-orange);
  margin-right: 10px;
}

.page-news__section-head p {
  margin: 0;
  font-size: 14px;
  color: var(--c-gray);
  padding-left: 20px;
}

.page-news__keyword {
  color: var(--c-navy);
  font-weight: 700;
}

/* ========== 筛选 ========== */
.page-news__filter-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-bottom: 28px;
  padding: 16px;
  background: var(--c-white);
  border: 1px solid var(--news-line);
}

.page-news__filter-bar-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--c-navy);
}

.page-news__filter-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-news__filter-tabs label {
  display: inline-block;
  padding: 7px 14px;
  font-size: 13px;
  font-weight: 600;
  color: var(--c-navy);
  background: var(--c-light);
  border: 1px solid transparent;
  cursor: pointer;
  user-select: none;
  transition: all 0.2s ease;
}

.page-news__filter-tabs label:hover {
  color: var(--c-orange);
  background: var(--c-orange-light);
}

/* ========== 文章时间线 ========== */
.page-news__timeline {
  padding-left: 0;
}

.page-news__post {
  position: relative;
  padding: 0 0 28px;
  margin-bottom: 28px;
  border-bottom: 1px solid var(--news-line);
}

.page-news__post:last-child {
  margin-bottom: 0;
  padding-bottom: 0;
  border-bottom: none;
}

.page-news__post::before {
  content: "";
  position: absolute;
  left: 9px;
  top: 34px;
  bottom: -18px;
  width: 2px;
  background: var(--c-orange-light);
}

.page-news__post:last-child::before {
  display: none;
}

.page-news__post::after {
  content: "";
  position: absolute;
  left: 4px;
  top: 10px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--c-orange);
  box-shadow: 0 0 0 4px var(--c-orange-light);
  transition: background 0.2s ease, box-shadow 0.2s ease;
}

.page-news__post:hover::after {
  background: var(--c-gold);
  box-shadow: 0 0 0 4px rgba(233, 196, 106, 0.25);
}

.page-news__post-marker {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  color: var(--c-orange-dark);
  background: var(--c-orange-light);
  padding: 2px 12px;
  margin: 0 0 10px 32px;
}

.page-news__post-content {
  display: block;
}

.page-news__post-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 8px;
}

.page-news__post-title {
  font-size: 20px;
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -0.01em;
  margin: 0 0 8px;
  transition: color 0.2s ease;
}

.page-news__post:hover .page-news__post-title {
  color: var(--c-orange-dark);
}

.page-news__post-excerpt {
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-gray);
  margin: 0;
}

.page-news__post-thumb {
  margin-top: 14px;
}

.page-news__post-thumb img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border: 1px solid var(--news-line);
}

/* ========== 编辑推荐 ========== */
.page-news__section--featured {
  padding-top: 36px;
  border-top: 3px solid var(--c-navy);
}

.page-news__featured {
  display: grid;
  grid-template-columns: 1fr;
  margin-bottom: 24px;
  background: var(--c-navy);
  color: var(--c-white);
}

.page-news__featured-media {
  background: var(--c-navy-dark);
  min-height: 0;
}

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

.page-news__featured-body {
  padding: 24px 22px;
}

.page-news__featured-body h3 {
  font-size: 24px;
  font-weight: 800;
  line-height: 1.25;
  margin: 0 0 12px;
}

.page-news__featured-body p {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.82);
  margin: 0;
}

.page-news__featured-body a {
  color: var(--c-gold);
  text-decoration: underline;
  text-underline-offset: 4px;
}

.page-news__featured-body a:hover {
  color: var(--c-orange);
}

.page-news__featured--compact {
  background: var(--c-white);
  border: 1px solid var(--news-line);
  border-left: 4px solid var(--c-gold);
}

.page-news__featured--compact .page-news__featured-body {
  padding: 24px;
}

.page-news__featured--compact h3 {
  font-size: 20px;
  color: var(--c-navy);
  margin-bottom: 10px;
}

.page-news__featured--compact p {
  color: var(--c-gray);
}

.page-news__featured--compact a {
  color: var(--c-orange-dark);
}

/* ========== 数据观察专栏 ========== */
.page-news__section--column {
  padding-top: 36px;
  border-top: 3px solid var(--c-navy);
}

.page-news__column {
  display: grid;
  grid-template-columns: 1fr;
  background: var(--c-white);
  border: 1px solid var(--news-line);
}

.page-news__column-media {
  background: var(--c-orange-light);
}

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

.page-news__column-body {
  padding: 24px;
}

.page-news__column-kicker {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--c-orange-dark);
  text-transform: uppercase;
  margin: 0 0 8px;
}

.page-news__column-body h3 {
  font-size: 22px;
  font-weight: 800;
  margin: 0 0 10px;
}

.page-news__column-body p {
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-gray);
  margin: 0 0 10px;
}

.page-news__column-body a {
  color: var(--c-orange-dark);
  text-decoration: underline;
  text-underline-offset: 4px;
}

.page-news__column-footnote {
  font-size: 13px;
  color: var(--c-gray);
  border-left: 3px solid var(--c-gold);
  padding-left: 12px;
}

/* ========== 侧边栏 ========== */
.page-news__sidebar {
  margin-top: 20px;
}

.page-news__widget {
  background: var(--c-white);
  border: 1px solid var(--news-line);
  padding: 22px;
  margin-bottom: 24px;
}

.page-news__widget h2 {
  font-size: 18px;
  font-weight: 800;
  letter-spacing: -0.01em;
  margin: 0 0 12px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--c-navy);
}

.page-news__widget-desc {
  font-size: 13px;
  color: var(--c-gray);
  margin: 0 0 14px;
}

.page-news__tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-news__tag-cloud label {
  cursor: pointer;
  user-select: none;
  transition: all 0.2s ease;
}

.page-news__tag-cloud label:hover {
  color: var(--c-orange);
  background: var(--c-orange-light);
  border-color: var(--c-orange);
}

/* ========== 推荐工具 ========== */
.page-news__tool-list {
  display: grid;
  gap: 10px;
}

.page-news__tool-card {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 14px;
  background: var(--c-light);
  border: 1px solid var(--news-line);
  text-decoration: none;
  transition: background 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.page-news__tool-card:hover {
  background: var(--c-orange-light);
  border-color: var(--c-orange);
  transform: translateY(-2px);
}

.page-news__tool-marker {
  font-size: 16px;
  color: var(--c-orange);
  line-height: 1.4;
}

.page-news__tool-copy {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.page-news__tool-copy strong {
  font-size: 15px;
  font-weight: 700;
  color: var(--c-navy);
}

.page-news__tool-copy span {
  font-size: 13px;
  color: var(--c-gray);
  line-height: 1.5;
}

/* ========== 数据可信度 ========== */
.page-news__trust-list {
  margin: 0 0 16px;
  padding: 0;
  list-style: none;
}

.page-news__trust-list li {
  position: relative;
  padding: 6px 0 6px 20px;
  font-size: 14px;
  color: var(--c-navy);
}

.page-news__trust-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 14px;
  width: 8px;
  height: 8px;
  background: var(--c-gold);
}

.page-news__widget-link {
  display: inline-block;
  font-size: 14px;
  font-weight: 600;
  color: var(--c-orange-dark);
  text-decoration: none;
  border-bottom: 2px solid var(--c-orange);
  padding-bottom: 2px;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.page-news__widget-link:hover {
  color: var(--c-navy);
  border-color: var(--c-navy);
}

/* ========== 筛选状态 ========== */
#filter-schedule:checked ~ .page-news__main .page-news__post:not([data-category="schedule"]),
#filter-team:checked ~ .page-news__main .page-news__post:not([data-category="team"]),
#filter-tool:checked ~ .page-news__main .page-news__post:not([data-category="tool"]),
#filter-analysis:checked ~ .page-news__main .page-news__post:not([data-category="analysis"]) {
  display: none;
}

#filter-schedule:checked ~ .page-news__main .page-news__filter-tabs label[for="filter-schedule"],
#filter-team:checked ~ .page-news__main .page-news__filter-tabs label[for="filter-team"],
#filter-tool:checked ~ .page-news__main .page-news__filter-tabs label[for="filter-tool"],
#filter-analysis:checked ~ .page-news__main .page-news__filter-tabs label[for="filter-analysis"],
#filter-all:checked ~ .page-news__main .page-news__filter-tabs label[for="filter-all"],
#filter-schedule:checked ~ .page-news__sidebar .page-news__tag-cloud label[for="filter-schedule"],
#filter-team:checked ~ .page-news__sidebar .page-news__tag-cloud label[for="filter-team"],
#filter-tool:checked ~ .page-news__sidebar .page-news__tag-cloud label[for="filter-tool"],
#filter-analysis:checked ~ .page-news__sidebar .page-news__tag-cloud label[for="filter-analysis"],
#filter-all:checked ~ .page-news__sidebar .page-news__tag-cloud label[for="filter-all"] {
  background: var(--c-orange);
  border-color: var(--c-orange);
  color: var(--c-white);
}

/* ========== 桌面端 ========== */
@media (min-width: 768px) {
  .page-news__hero {
    padding: 48px 0 84px;
  }

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

  .page-news__hero-desc {
    font-size: 16px;
  }

  .page-news__hero-stats {
    min-width: 320px;
  }

  .page-news__post-content {
    display: flex;
    gap: 20px;
    align-items: flex-start;
  }

  .page-news__post-copy {
    flex: 1;
  }

  .page-news__post-thumb {
    flex-shrink: 0;
    width: 200px;
    margin-top: 0;
  }

  .page-news__post-thumb img {
    width: 200px;
    height: 150px;
  }

  .page-news__featured {
    grid-template-columns: 3fr 2fr;
    gap: 0;
  }

  .page-news__featured--compact {
    grid-template-columns: 1fr;
    margin-left: 0;
  }

  .page-news__column {
    grid-template-columns: 3fr 4fr;
    gap: 0;
  }

  .page-news__column-media {
    min-height: 220px;
  }
}

@media (min-width: 1024px) {
  .page-news__layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) var(--news-sidebar-w);
    gap: 48px;
    align-items: start;
  }

  .page-news__main {
    min-width: 0;
  }

  .page-news__sidebar {
    margin-top: 0;
    position: sticky;
    top: 88px;
  }

  .page-news__section-head h2 {
    font-size: 30px;
  }

  .page-news__post-marker {
    margin-left: 36px;
  }

  .page-news__post-title {
    font-size: 21px;
  }
}