/* ===== 页面 page-news 专属样式 ===== */
.page-news {
  --news-red: #E63946;
  --news-blue: #1D3557;
  --news-blue-light: #2a4a7f;
  --news-gold: #F4A261;
  --news-green: #2A9D8F;
  --news-dark: #2B2D42;
  --news-light-bg: #F8F9FA;
  --news-white: #FFFFFF;
  --news-font-heading: "Oswald", "Bebas Neue", sans-serif;
  --news-font-body: "Noto Sans SC", "Microsoft YaHei", sans-serif;
  --news-font-data: "Fira Code", "Consolas", monospace;
  --news-radius-card: 16px;
  --news-radius-btn: 50px;
  --news-shadow-sm: 0 2px 8px rgba(0,0,0,0.08);
  --news-shadow-hover: 0 8px 24px rgba(0,0,0,0.12);
  --news-transition: 0.3s ease;
  --news-timeline-line: #DCE1E8;

  display: block;
  background: var(--news-light-bg);
  padding-bottom: 3rem;
}

/* 容器复用共享 .container，但额外约束 */
.page-news .container {
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.25rem;
  padding-right: 1.25rem;
}

/* ===== 面包屑 ===== */
.page-news__breadcrumb {
  padding-top: 1.25rem;
  padding-bottom: 0.5rem;
  font-family: var(--news-font-body);
  font-size: 0.8125rem;
  color: var(--news-blue);
  display: flex;
  flex-wrap: wrap;
  gap: 0.375rem;
  align-items: center;
}
.page-news__breadcrumb a {
  color: var(--news-blue);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--news-transition);
}
.page-news__breadcrumb a:hover,
.page-news__breadcrumb a:focus-visible {
  border-bottom-color: var(--news-red);
}
.page-news__sep {
  color: var(--news-red);
  font-size: 0.75rem;
  opacity: 0.7;
}
.page-news__current {
  font-weight: 600;
  color: var(--news-dark);
}

/* ===== 刊头 ===== */
.page-news__masthead {
  padding-top: 1rem;
  padding-bottom: 1.5rem;
  border-bottom: 2px solid var(--news-red);
  margin-bottom: 2rem;
}
.page-news__title {
  font-family: var(--news-font-heading);
  font-size: clamp(2rem, 6vw, 3.25rem);
  font-weight: 700;
  color: var(--news-blue);
  margin: 0 0 0.375rem 0;
  line-height: 1.05;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}
.page-news__subtitle {
  font-family: var(--news-font-body);
  font-size: clamp(0.9375rem, 2vw, 1.125rem);
  color: var(--news-dark);
  opacity: 0.8;
  margin: 0;
  font-weight: 400;
}

/* ===== 热门标签 ===== */
.page-news__tags {
  margin-bottom: 2.25rem;
}
.page-news__tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
}
.page-news__tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1.25rem 0.5rem 1rem;
  font-family: var(--news-font-body);
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--news-blue);
  background: var(--news-white);
  border: 2px solid var(--news-blue);
  border-radius: var(--news-radius-btn);
  cursor: pointer;
  transition: all var(--news-transition);
  box-shadow: var(--news-shadow-sm);
}
.page-news__tag:hover,
.page-news__tag:focus-visible {
  border-color: var(--news-red);
  color: var(--news-red);
  box-shadow: var(--news-shadow-hover);
  transform: translateY(-2px);
}
.page-news__tag--active {
  background: var(--news-red);
  border-color: var(--news-red);
  color: var(--news-white);
}
.page-news__tag--active:hover {
  background: var(--news-red);
  border-color: var(--news-red);
  color: var(--news-white);
  transform: translateY(-2px);
  box-shadow: var(--news-shadow-hover);
}
.page-news__tag-icon {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
}
@media (min-width: 640px) {
  .page-news__tag-icon {
    width: 28px;
    height: 28px;
  }
}

/* ===== 时间线网格 ===== */
.page-news__timeline {
  margin-bottom: 3rem;
}
.page-news__section-heading {
  font-family: var(--news-font-heading);
  font-size: clamp(1.5rem, 4vw, 2.25rem);
  font-weight: 700;
  color: var(--news-blue);
  margin: 0 0 1.5rem 0;
  line-height: 1.1;
  position: relative;
  padding-left: 1rem;
  border-left: 4px solid var(--news-red);
}
.page-news__timeline-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  position: relative;
}
/* 左侧时间线竖线 —— 桌面显示 */
@media (min-width: 768px) {
  .page-news__timeline-grid {
    grid-template-columns: 1fr 1fr;
    gap: 2rem 2.5rem;
  }
  .page-news__timeline-grid::before {
    content: "";
    position: absolute;
    left: calc(50% - 1px);
    top: 0;
    bottom: 0;
    width: 3px;
    background: var(--news-timeline-line);
    border-radius: 2px;
  }
}
@media (min-width: 1024px) {
  .page-news__timeline-grid {
    grid-template-columns: 1fr 1fr 1fr;
    gap: 2.5rem;
  }
  .page-news__timeline-grid::before {
    left: calc(50% - 1px);
  }
}

/* ===== 文章卡片 ===== */
.page-news__card {
  position: relative;
  background: var(--news-white);
  border-radius: var(--news-radius-card);
  box-shadow: var(--news-shadow-sm);
  overflow: hidden;
  transition: transform var(--news-transition), box-shadow var(--news-transition);
  display: flex;
  flex-direction: column;
  border: 1px solid rgba(0,0,0,0.04);
}
.page-news__card:hover {
  transform: translateY(-4px);
  box-shadow: var(--news-shadow-hover);
}
.page-news__card-index {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  font-family: var(--news-font-data);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--news-blue);
  opacity: 0.3;
  letter-spacing: 0.05em;
  line-height: 1;
  z-index: 2;
  background: rgba(255,255,255,0.7);
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
}
.page-news__card-image-wrap {
  width: 100%;
  aspect-ratio: 400 / 250;
  overflow: hidden;
  background: var(--news-light-bg);
}
.page-news__card-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.4s ease;
}
.page-news__card:hover .page-news__card-img {
  transform: scale(1.04);
}
.page-news__card-body {
  padding: 1rem 1.125rem 1.125rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.page-news__card-title {
  font-family: var(--news-font-body);
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--news-dark);
  margin: 0 0 0.5rem 0;
  line-height: 1.3;
}
.page-news__card-summary {
  font-family: var(--news-font-body);
  font-size: 0.875rem;
  color: var(--news-dark);
  opacity: 0.75;
  margin: 0 0 0.75rem 0;
  line-height: 1.55;
  flex: 1;
}
.page-news__card-tag-label {
  display: inline-block;
  font-family: var(--news-font-data);
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 0.2rem 0.75rem;
  border-radius: 20px;
  background: var(--news-light-bg);
  color: var(--news-blue);
  align-self: flex-start;
  margin-bottom: 0.75rem;
  border: 1px solid var(--news-blue);
}
.page-news__card-tag-label[data-category="red-yellow"] {
  border-color: var(--news-gold);
  color: #b8632e;
  background: #fef5ea;
}
.page-news__card-tag-label[data-category="lineup"] {
  border-color: var(--news-green);
  color: var(--news-green);
  background: #eaf7f4;
}
.page-news__card-tag-label[data-category="stats"] {
  border-color: var(--news-blue);
  color: var(--news-blue);
  background: #eef2f7;
}
.page-news__card-expand {
  font-family: var(--news-font-body);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--news-red);
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
  align-self: flex-start;
  transition: color var(--news-transition);
  text-decoration: underline 1px dotted transparent;
  text-underline-offset: 3px;
}
.page-news__card-expand:hover,
.page-news__card-expand:focus-visible {
  color: var(--news-blue);
  text-decoration-color: var(--news-red);
}
.page-news__card-detail {
  margin-top: 0.75rem;
  padding-top: 0.75rem;
  border-top: 1px dashed var(--news-timeline-line);
  font-family: var(--news-font-body);
  font-size: 0.875rem;
  color: var(--news-dark);
  line-height: 1.6;
  opacity: 0.9;
}
.page-news__card-detail[hidden] {
  display: none;
}

/* ===== 深度阅读 ===== */
.page-news__deep-read {
  margin-bottom: 2.5rem;
}
.page-news__deep-card {
  display: flex;
  flex-direction: column;
  background: var(--news-white);
  border-radius: var(--news-radius-card);
  box-shadow: var(--news-shadow-sm);
  overflow: hidden;
  border: 1px solid rgba(0,0,0,0.04);
  transition: box-shadow var(--news-transition);
}
.page-news__deep-card:hover {
  box-shadow: var(--news-shadow-hover);
}
.page-news__deep-image-wrap {
  width: 100%;
  aspect-ratio: 1200 / 600;
  overflow: hidden;
  background: var(--news-light-bg);
}
.page-news__deep-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.4s ease;
}
.page-news__deep-card:hover .page-news__deep-img {
  transform: scale(1.03);
}
.page-news__deep-body {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
}
.page-news__deep-badge {
  display: inline-block;
  font-family: var(--news-font-data);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 0.25rem 1rem;
  border-radius: 20px;
  background: var(--news-red);
  color: var(--news-white);
  align-self: flex-start;
  margin-bottom: 1rem;
}
.page-news__deep-title {
  font-family: var(--news-font-heading);
  font-size: clamp(1.25rem, 3vw, 1.875rem);
  font-weight: 700;
  color: var(--news-blue);
  margin: 0 0 0.75rem 0;
  line-height: 1.2;
}
.page-news__deep-summary {
  font-family: var(--news-font-body);
  font-size: 0.9375rem;
  color: var(--news-dark);
  opacity: 0.85;
  margin: 0 0 1.25rem 0;
  line-height: 1.6;
  max-width: 72ch;
}
.page-news__deep-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  margin-bottom: 1.25rem;
}
.page-news__deep-stat {
  font-family: var(--news-font-body);
  font-size: 0.875rem;
  color: var(--news-dark);
  opacity: 0.75;
  display: flex;
  align-items: center;
  gap: 0.375rem;
}
.page-news__num {
  font-family: var(--news-font-data);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--news-red);
  line-height: 1;
}
.page-news__deep-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--news-font-body);
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--news-white);
  background: var(--news-blue);
  padding: 0.7rem 2rem;
  border-radius: var(--news-radius-btn);
  text-decoration: none;
  align-self: flex-start;
  transition: background var(--news-transition), transform var(--news-transition);
  border: 2px solid var(--news-blue);
}
.page-news__deep-cta:hover,
.page-news__deep-cta:focus-visible {
  background: var(--news-red);
  border-color: var(--news-red);
  transform: translateY(-2px);
}

/* 桌面深度阅读水平布局 */
@media (min-width: 768px) {
  .page-news__deep-card {
    flex-direction: row;
    align-items: stretch;
  }
  .page-news__deep-image-wrap {
    width: 45%;
    aspect-ratio: auto;
    min-height: 300px;
  }
  .page-news__deep-body {
    width: 55%;
    padding: 2rem 2.5rem;
    justify-content: center;
  }
}
@media (min-width: 1024px) {
  .page-news__deep-image-wrap {
    width: 50%;
  }
  .page-news__deep-body {
    width: 50%;
    padding: 2.5rem 3rem;
  }
}

/* ===== 内联导航 ===== */
.page-news__internal-nav {
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 2px solid var(--news-timeline-line);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem 1.5rem;
}
.page-news__internal-label {
  font-family: var(--news-font-body);
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--news-blue);
  margin: 0;
}
.page-news__internal-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
  list-style: none;
  margin: 0;
  padding: 0;
}
.page-news__internal-link {
  font-family: var(--news-font-body);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--news-blue);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: border-color var(--news-transition), color var(--news-transition);
}
.page-news__internal-link:hover,
.page-news__internal-link:focus-visible {
  color: var(--news-red);
  border-bottom-color: var(--news-red);
}

/* ===== 响应式微调 ===== */
@media (max-width: 480px) {
  .page-news .container {
    padding-left: 0.875rem;
    padding-right: 0.875rem;
  }
  .page-news__masthead {
    padding-top: 0.75rem;
    padding-bottom: 1rem;
    margin-bottom: 1.5rem;
  }
  .page-news__tag-list {
    gap: 0.5rem;
  }
  .page-news__tag {
    padding: 0.375rem 0.875rem 0.375rem 0.75rem;
    font-size: 0.8125rem;
  }
  .page-news__card-body {
    padding: 0.875rem;
  }
  .page-news__deep-body {
    padding: 1rem;
  }
  .page-news__deep-meta {
    gap: 1rem;
  }
  .page-news__internal-nav {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.75rem;
  }
}
/* 横向溢出防护 */
img {
  max-width: 100%;
  height: auto;
}
.page-news *,
.page-news *::before,
.page-news *::after {
  box-sizing: border-box;
}
/* 屏幕阅读器仅可见 */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}
/* 展开按钮焦点样式 */
.page-news__card-expand:focus-visible,
.page-news__tag:focus-visible,
.page-news__deep-cta:focus-visible,
.page-news__internal-link:focus-visible {
  outline: 3px solid var(--news-gold);
  outline-offset: 2px;
}
/* 暗纹时间线装饰 移动端无需竖线 */
@media (max-width: 767px) {
  .page-news__timeline-grid {
    position: relative;
  }
  .page-news__timeline-grid::before {
    content: "";
    position: absolute;
    left: 0.75rem;
    top: 0;
    bottom: 0;
    width: 3px;
    background: var(--news-timeline-line);
    border-radius: 2px;
    opacity: 0.5;
  }
  .page-news__card {
    margin-left: 1.5rem;
  }
  .page-news__card-index {
    left: -1.75rem;
    right: auto;
    top: 0.5rem;
    background: var(--news-white);
    box-shadow: 0 0 0 3px var(--news-light-bg);
    font-size: 0.6875rem;
    opacity: 0.8;
    padding: 0.15rem 0.4rem;
  }
}