/* ===== 新闻中心 .page-news 专属样式 ===== */
/* 移动端优先 — 基础样式为窄屏设计 */
.page-news {
  --news-sidebar-w: 240px;
  --news-dot-size: 14px;
  --news-dot-border: 4px;
  --news-line-color: rgba(0, 191, 255, 0.25);
  --news-card-radius: 12px;
  --news-card-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
  --news-tag-min: 0.85rem;
  --news-tag-max: 1.35rem;
  display: block;
  width: 100%;
  max-width: var(--container-max, 1200px);
  margin: 0 auto;
  padding: 0 16px 48px;
  font-family: var(--font-body, 'Open Sans', sans-serif);
  color: var(--text-primary, #222);
}

/* ------ 面包屑 ------ */
.page-news .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  font-family: var(--font-mono, 'Fira Code', monospace);
  color: var(--text-secondary, #6B6B6B);
  padding: 16px 0 8px;
  letter-spacing: 0.02em;
}
.page-news .breadcrumb__link {
  color: var(--primary, #00BFFF);
  text-decoration: none;
  transition: color var(--transition, 0.25s);
}
.page-news .breadcrumb__link:hover,
.page-news .breadcrumb__link:focus-visible {
  color: var(--accent, #FF4500);
  outline: 2px solid var(--accent, #FF4500);
  outline-offset: 2px;
}
.page-news .breadcrumb__sep {
  color: var(--text-muted, #A0A0A0);
  user-select: none;
}
.page-news .breadcrumb__current {
  color: var(--text-primary, #222);
  font-weight: 600;
}

/* ------ 主标题 ------ */
.page-news__main-title {
  font-family: var(--font-heading, 'Roboto Condensed', sans-serif);
  font-weight: 700;
  font-style: italic;
  font-size: 2.2rem;
  line-height: 1.15;
  margin: 0 0 20px;
  color: var(--bg-dark, #1A1A2E);
  letter-spacing: -0.01em;
  position: relative;
  padding-bottom: 12px;
}
.page-news__main-title::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 56px;
  height: 4px;
  background: linear-gradient(90deg, var(--primary, #00BFFF), var(--accent, #FF4500));
  border-radius: 2px;
}

/* ------ 布局容器: 移动端纵向，桌面横向 ------ */
.page-news__inner {
  display: flex;
  flex-direction: column;
  gap: 24px;
  position: relative;
}

/* ------ 侧边栏: 移动端为水平分类条，桌面为垂直面板 ------ */
.page-news__sidebar {
  background: var(--surface, #FFF);
  border-radius: var(--radius-md, 8px);
  padding: 16px 18px;
  box-shadow: var(--shadow-sm, 0 2px 8px rgba(0,0,0,0.08));
  border: 1px solid var(--border-color, #DDE0E4);
  order: 0;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
.page-news__sidebar-title {
  font-family: var(--font-heading, 'Roboto Condensed', sans-serif);
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-secondary, #6B6B6B);
  margin: 0 0 12px;
  display: none;
}
.page-news__category-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: nowrap;
  gap: 8px;
}
.page-news__category-link {
  display: block;
  padding: 6px 16px;
  font-size: 0.85rem;
  font-weight: 600;
  font-family: var(--font-mono, 'Fira Code', monospace);
  color: var(--text-secondary, #6B6B6B);
  background: var(--bg-light, #F5F5F5);
  border-radius: 20px;
  cursor: pointer;
  transition: all var(--transition, 0.25s);
  white-space: nowrap;
  user-select: none;
  border: 2px solid transparent;
}
.page-news__category-link:hover {
  background: var(--primary-light, #66D9FF);
  color: var(--bg-dark, #1A1A2E);
  border-color: var(--primary, #00BFFF);
}
.page-news__category-link:focus-visible {
  outline: 2px solid var(--accent, #FF4500);
  outline-offset: 2px;
}
.page-news__sidebar-extra {
  display: none;
}

/* ------ radio 驱动分类高亮与筛选 ------ */
#nc-all:checked ~ .page-news__sidebar .page-news__category-link[for="nc-all"],
#nc-brand:checked ~ .page-news__sidebar .page-news__category-link[for="nc-brand"],
#nc-feature:checked ~ .page-news__sidebar .page-news__category-link[for="nc-feature"],
#nc-content:checked ~ .page-news__sidebar .page-news__category-link[for="nc-content"] {
  background: var(--primary, #00BFFF);
  color: #FFF;
  border-color: var(--primary-dark, #009ACD);
}

#nc-all:checked ~ .page-news__content .page-news__timeline-item { display: flex; }
#nc-brand:checked ~ .page-news__content .page-news__timeline-item[data-category="brand"] { display: flex; }
#nc-brand:checked ~ .page-news__content .page-news__timeline-item:not([data-category="brand"]) { display: none; }
#nc-feature:checked ~ .page-news__content .page-news__timeline-item[data-category="feature"] { display: flex; }
#nc-feature:checked ~ .page-news__content .page-news__timeline-item:not([data-category="feature"]) { display: none; }
#nc-content:checked ~ .page-news__content .page-news__timeline-item[data-category="content"] { display: flex; }
#nc-content:checked ~ .page-news__content .page-news__timeline-item:not([data-category="content"]) { display: none; }

/* ------ 内容区 ------ */
.page-news__content {
  flex: 1;
  min-width: 0;
  order: 1;
}

/* ------ 标签云 ------ */
.page-news__tags-section {
  margin-bottom: 24px;
  padding: 16px 0 8px;
  border-top: 2px dashed var(--border-color, #DDE0E4);
  border-bottom: 2px dashed var(--border-color, #DDE0E4);
}
.page-news__tags-heading {
  font-family: var(--font-heading, 'Roboto Condensed', sans-serif);
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted, #A0A0A0);
  margin: 0 0 12px;
}
.page-news__tags-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  align-items: center;
}
.page-news__tag {
  font-family: var(--font-heading, 'Roboto Condensed', sans-serif);
  font-weight: 700;
  font-style: italic;
  color: var(--text-secondary, #6B6B6B);
  cursor: default;
  padding: 2px 0;
  transition: all var(--transition, 0.25s);
  border-bottom: 2px solid transparent;
  user-select: none;
}
.page-news__tag[data-tag="match"] { font-size: var(--news-tag-max); }
.page-news__tag[data-tag="olympic"] { font-size: var(--news-tag-min); }
.page-news__tag[data-tag="rules"] { font-size: calc(var(--news-tag-min) + 0.1rem); }
.page-news__tag[data-tag="nav"] { font-size: calc(var(--news-tag-min) + 0.25rem); }
.page-news__tag:hover,
.page-news__tag:focus-visible {
  color: var(--accent, #FF4500);
  border-bottom-color: var(--accent, #FF4500);
  transform: translateY(-2px);
}
.page-news__tag:focus-visible {
  outline: 2px solid var(--accent, #FF4500);
  outline-offset: 4px;
}

/* ------ 横幅图片 ------ */
.page-news__banner-wrap {
  margin-bottom: 32px;
  border-radius: var(--news-card-radius);
  overflow: hidden;
  box-shadow: var(--shadow-md, 0 6px 20px rgba(0,0,0,0.12));
}
.page-news__banner-img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  aspect-ratio: 1200 / 600;
}

/* ------ 时间线 ------ */
.page-news__timeline-heading {
  font-family: var(--font-heading, 'Roboto Condensed', sans-serif);
  font-size: 1.6rem;
  font-weight: 700;
  font-style: italic;
  margin: 0 0 24px;
  color: var(--bg-dark, #1A1A2E);
  position: relative;
  padding-left: 20px;
}
.page-news__timeline-heading::before {
  content: '';
  position: absolute;
  left: 0;
  top: 6px;
  bottom: 6px;
  width: 4px;
  background: linear-gradient(180deg, var(--primary, #00BFFF), var(--accent, #FF4500));
  border-radius: 2px;
}
.page-news__timeline-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  position: relative;
  padding-left: 28px;
}
.page-news__timeline-list::before {
  content: '';
  position: absolute;
  left: 6px;
  top: 12px;
  bottom: 12px;
  width: 2px;
  background: repeating-linear-gradient(
    to bottom,
    var(--news-line-color) 0,
    var(--news-line-color) 6px,
    transparent 6px,
    transparent 12px
  );
}

/* ------ 时间线条目 ------ */
.page-news__timeline-item {
  display: flex;
  gap: 16px;
  position: relative;
  padding-bottom: 32px;
  transition: background var(--transition, 0.25s);
  border-radius: var(--radius-sm, 4px);
  margin-left: -28px;
  padding-left: 28px;
}
.page-news__timeline-item:last-child {
  padding-bottom: 0;
}
.page-news__timeline-item:hover {
  background: rgba(0, 191, 255, 0.04);
}
.page-news__dot {
  flex-shrink: 0;
  width: var(--news-dot-size);
  height: var(--news-dot-size);
  border-radius: 50%;
  background: var(--dot-color, var(--primary, #00BFFF));
  border: var(--news-dot-border) solid var(--surface, #FFF);
  box-shadow: 0 0 0 2px var(--dot-color, var(--primary, #00BFFF));
  margin-top: 6px;
  position: relative;
  z-index: 2;
  transition: transform var(--transition, 0.25s);
}
.page-news__timeline-item:hover .page-news__dot {
  transform: scale(1.25);
}

/* ------ 卡片 ------ */
.page-news__card {
  flex: 1;
  min-width: 0;
  background: var(--surface, #FFF);
  border-radius: var(--news-card-radius);
  padding: 18px 20px;
  box-shadow: var(--news-card-shadow);
  border: 1px solid var(--border-color, #DDE0E4);
  transition: box-shadow var(--transition, 0.25s), transform var(--transition, 0.25s);
}
.page-news__timeline-item:hover .page-news__card {
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.12);
  transform: translateY(-2px);
}
.page-news__card-date {
  display: inline-block;
  font-size: 0.75rem;
  font-family: var(--font-mono, 'Fira Code', monospace);
  color: var(--text-muted, #A0A0A0);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 6px;
  background: var(--bg-light, #F5F5F5);
  padding: 2px 10px;
  border-radius: 10px;
}
.page-news__card-title {
  font-family: var(--font-heading, 'Roboto Condensed', sans-serif);
  font-size: 1.2rem;
  font-weight: 700;
  margin: 0 0 6px;
  color: var(--bg-dark, #1A1A2E);
  line-height: 1.25;
}
.page-news__card-tag {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  font-family: var(--font-mono, 'Fira Code', monospace);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 2px 10px;
  border-radius: 10px;
  margin-bottom: 10px;
  background: var(--bg-light, #F5F5F5);
  color: var(--text-secondary, #6B6B6B);
}
.tag-brand { background: rgba(0, 191, 255, 0.12); color: var(--primary-dark, #009ACD); }
.tag-feature { background: rgba(255, 69, 0, 0.12); color: var(--accent-dark, #DC143C); }
.tag-content { background: rgba(50, 205, 50, 0.12); color: #228B22; }
.page-news__card-desc {
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--text-secondary, #6B6B6B);
  margin: 0 0 14px;
}
.page-news__card-img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 800 / 400;
  object-fit: cover;
  border-radius: var(--radius-sm, 4px);
  margin-bottom: 14px;
  background: var(--bg-light, #F5F5F5);
}
.page-news__card-link {
  display: inline-block;
  font-family: var(--font-mono, 'Fira Code', monospace);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--primary, #00BFFF);
  text-decoration: none;
  padding: 6px 0 4px;
  border-bottom: 2px solid transparent;
  transition: all var(--transition, 0.25s);
}
.page-news__card-link:hover,
.page-news__card-link:focus-visible {
  color: var(--accent, #FF4500);
  border-bottom-color: var(--accent, #FF4500);
  padding-left: 4px;
}
.page-news__card-link:focus-visible {
  outline: 2px solid var(--accent, #FF4500);
  outline-offset: 4px;
}

/* ===== 桌面端媒体查询 ===== */
@media (min-width: 768px) {
  .page-news {
    padding: 0 24px 64px;
  }
  .page-news__main-title {
    font-size: 3rem;
    margin-bottom: 28px;
  }
  .page-news__main-title::after {
    width: 80px;
    height: 5px;
  }
  .page-news__inner {
    flex-direction: row;
    align-items: flex-start;
    gap: 36px;
  }
  .page-news__sidebar {
    position: sticky;
    top: 24px;
    width: var(--news-sidebar-w);
    flex-shrink: 0;
    order: 0;
    padding: 24px 20px;
    overflow: visible;
    border-radius: var(--radius-lg, 16px);
  }
  .page-news__sidebar-title {
    display: block;
    font-size: 0.9rem;
    margin-bottom: 18px;
  }
  .page-news__category-list {
    flex-direction: column;
    gap: 6px;
  }
  .page-news__category-link {
    white-space: normal;
    border-radius: var(--radius-sm, 4px);
    padding: 10px 16px;
    font-size: 0.9rem;
    background: transparent;
    border: none;
    border-left: 3px solid transparent;
  }
  .page-news__category-link:hover {
    background: rgba(0, 191, 255, 0.08);
    border-left-color: var(--primary, #00BFFF);
  }
  #nc-all:checked ~ .page-news__sidebar .page-news__category-link[for="nc-all"],
  #nc-brand:checked ~ .page-news__sidebar .page-news__category-link[for="nc-brand"],
  #nc-feature:checked ~ .page-news__sidebar .page-news__category-link[for="nc-feature"],
  #nc-content:checked ~ .page-news__sidebar .page-news__category-link[for="nc-content"] {
    background: rgba(0, 191, 255, 0.12);
    color: var(--primary-dark, #009ACD);
    border-left-color: var(--primary, #00BFFF);
    border-radius: 0 var(--radius-sm, 4px) var(--radius-sm, 4px) 0;
  }
  .page-news__sidebar-extra {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-top: 28px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color, #DDE0E4);
  }
  .page-news__sidebar-link {
    font-family: var(--font-mono, 'Fira Code', monospace);
    font-size: 0.8rem;
    color: var(--text-secondary, #6B6B6B);
    text-decoration: none;
    padding: 4px 0;
    transition: color var(--transition, 0.25s);
  }
  .page-news__sidebar-link:hover,
  .page-news__sidebar-link:focus-visible {
    color: var(--primary, #00BFFF);
  }
  .page-news__sidebar-link:focus-visible {
    outline: 2px solid var(--accent, #FF4500);
    outline-offset: 2px;
  }
  .page-news__content {
    order: 1;
  }
  .page-news__tags-section {
    padding: 20px 0 12px;
  }
  .page-news__tags-cloud {
    gap: 14px 24px;
  }
  .page-news__tag[data-tag="match"] { font-size: calc(var(--news-tag-max) + 0.15rem); }
  .page-news__tag[data-tag="olympic"] { font-size: calc(var(--news-tag-min) + 0.15rem); }
  .page-news__tag[data-tag="rules"] { font-size: calc(var(--news-tag-min) + 0.3rem); }
  .page-news__tag[data-tag="nav"] { font-size: calc(var(--news-tag-min) + 0.45rem); }
  .page-news__timeline-list {
    padding-left: 36px;
  }
  .page-news__timeline-list::before {
    left: 8px;
  }
  .page-news__timeline-item {
    margin-left: -36px;
    padding-left: 36px;
    padding-bottom: 40px;
  }
  .page-news__dot {
    width: calc(var(--news-dot-size) + 4px);
    height: calc(var(--news-dot-size) + 4px);
    margin-top: 8px;
  }
  .page-news__card {
    padding: 24px 28px;
  }
  .page-news__card-title {
    font-size: 1.35rem;
  }
}

/* ===== 大屏优化 ===== */
@media (min-width: 1200px) {
  .page-news {
    padding: 0 32px 80px;
  }
  .page-news__main-title {
    font-size: 3.4rem;
  }
  .page-news__sidebar {
    width: 260px;
    padding: 28px 24px;
  }
  .page-news__card {
    padding: 28px 32px;
  }
}

/* ===== 确保图片响应式 ===== */
.page-news img {
  max-width: 100%;
  height: auto;
}

.page-news {
  --dot-color: none;
}