/* ===== 品牌日志页专属样式（.page-news 作用域） ===== */
.page-news {
  --news-gold: #FFD700;
  --news-primary: #0D1B2A;
  --news-secondary: #1B3A5C;
  --news-accent: #4A90D9;
  --news-white: #FFFFFF;
  --news-light-gray: #F5F5F5;
  --news-medium-gray: #CCCCCC;
  --news-dark-gray: #333333;
  --news-timeline-width: 120px;
  --news-dot-size: 16px;
  --news-card-radius: 12px;
  --news-transition: 0.25s ease;
}

/* ---- 首屏英雄区 ---- */
.page-news .news-hero {
  background: var(--news-primary);
  color: var(--news-white);
  padding: 2rem 0 0;
  position: relative;
  overflow: hidden;
}

.page-news .hero-layout {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  position: relative;
  z-index: 2;
}

.page-news .hero-text {
  order: 2;
}

.page-news .hero-visual {
  order: 1;
  margin: 0 calc(-1 * var(--spacing-unit) * 2);
  border-radius: var(--news-card-radius);
  overflow: hidden;
  max-height: 220px;
}

.page-news .hero-bg {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  min-height: 180px;
}

.page-news .news-breadcrumb {
  font: var(--font-body);
  font-size: 0.85rem;
  color: var(--news-medium-gray);
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.35rem;
  flex-wrap: wrap;
}

.page-news .breadcrumb-link {
  color: var(--news-accent);
  text-decoration: none;
  transition: color var(--news-transition);
}

.page-news .breadcrumb-link:hover,
.page-news .breadcrumb-link:focus-visible {
  color: var(--news-gold);
  text-decoration: underline;
}

.page-news .breadcrumb-sep {
  color: var(--news-medium-gray);
  user-select: none;
}

.page-news .breadcrumb-current {
  color: var(--news-gold);
  font-weight: 600;
}

.page-news .hero-title {
  font: var(--font-heading);
  font-size: 2.2rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--news-gold);
  margin: 0 0 0.5rem;
  line-height: 1.1;
}

.page-news .hero-desc {
  font: var(--font-body);
  font-size: 1rem;
  color: var(--news-light-gray);
  max-width: 640px;
  margin: 0 0 1rem;
  line-height: 1.6;
}

.page-news .hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.page-news .meta-tag {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  font: var(--font-body);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--news-primary);
  background: var(--news-gold);
  border-radius: 20px;
  letter-spacing: 0.02em;
}

/* ---- 标签索引区 ---- */
.page-news .news-tags {
  background: var(--news-secondary);
  padding: 1.5rem 0;
}

.page-news .tags-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.page-news .tags-icon {
  width: 40px;
  height: 40px;
  object-fit: contain;
  flex-shrink: 0;
  border-radius: 8px;
}

.page-news .tags-heading {
  font: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--news-white);
  margin: 0;
  letter-spacing: 0.03em;
}

.page-news .tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.page-news .tag-btn {
  display: inline-block;
  padding: 0.45rem 1.1rem;
  font: var(--font-body);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--news-white);
  background: transparent;
  border: 2px solid var(--news-gold);
  border-radius: 24px;
  cursor: pointer;
  transition: all var(--news-transition);
  letter-spacing: 0.02em;
  line-height: 1.4;
}

.page-news .tag-btn:hover,
.page-news .tag-btn:focus-visible {
  background: var(--news-gold);
  color: var(--news-primary);
  outline: none;
}

.page-news .tag-btn[aria-selected="true"] {
  background: var(--news-gold);
  color: var(--news-primary);
  border-color: var(--news-gold);
}

/* ---- 最新文章时间线 ---- */
.page-news .news-timeline {
  background: var(--news-light-gray);
  padding: 2.5rem 0;
}

.page-news .section-heading {
  font: var(--font-heading);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--news-primary);
  margin: 0 0 1.5rem;
  letter-spacing: 0.02em;
  position: relative;
  display: inline-block;
}

.page-news .section-heading::after {
  content: '';
  display: block;
  width: 60%;
  height: 4px;
  background: var(--news-gold);
  border-radius: 2px;
  margin-top: 0.4rem;
}

.page-news .timeline {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

/* 时间轴线 */
.page-news .timeline::before {
  content: '';
  position: absolute;
  left: 28px;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--news-medium-gray);
  border-radius: 2px;
  opacity: 0.5;
}

.page-news .timeline-item {
  position: relative;
  display: flex;
  flex-direction: row;
  align-items: flex-start;
  gap: 1rem;
}

.page-news .timeline-left {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-width: 56px;
  padding-top: 0.25rem;
  position: relative;
  z-index: 2;
}

.page-news .timeline-time {
  font: var(--font-data);
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--news-dark-gray);
  white-space: nowrap;
  margin-bottom: 0.35rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  background: var(--news-light-gray);
  padding: 0 0.2rem;
}

.page-news .timeline-dot {
  display: block;
  width: var(--news-dot-size);
  height: var(--news-dot-size);
  background: var(--news-gold);
  border: 3px solid var(--news-primary);
  border-radius: 50%;
  flex-shrink: 0;
  box-shadow: 0 0 0 3px var(--news-light-gray);
}

.page-news .timeline-card {
  flex: 1;
  background: var(--news-white);
  border-radius: var(--news-card-radius);
  overflow: hidden;
  box-shadow: 0 2px 12px rgba(13, 27, 42, 0.08);
  transition: box-shadow var(--news-transition), transform var(--news-transition);
  display: flex;
  flex-direction: column;
}

.page-news .timeline-card:hover,
.page-news .timeline-card:focus-within {
  box-shadow: 0 6px 24px rgba(13, 27, 42, 0.15);
  transform: translateY(-2px);
}

.page-news .card-img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  display: block;
}

.page-news .card-body {
  padding: 1rem 1.2rem 1.2rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.page-news .card-title {
  font: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--news-primary);
  margin: 0 0 0.4rem;
  line-height: 1.3;
}

.page-news .card-text {
  font: var(--font-body);
  font-size: 0.92rem;
  color: var(--news-dark-gray);
  margin: 0 0 0.75rem;
  line-height: 1.5;
  flex: 1;
}

.page-news .card-link {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font: var(--font-body);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--news-accent);
  text-decoration: none;
  transition: color var(--news-transition);
  align-self: flex-start;
}

.page-news .card-link:hover,
.page-news .card-link:focus-visible {
  color: var(--news-gold);
  text-decoration: underline;
}

/* ---- 视频专区 ---- */
.page-news .news-video {
  background: var(--news-primary);
  padding: 2.5rem 0;
  color: var(--news-white);
}

.page-news .news-video .section-heading {
  color: var(--news-white);
}

.page-news .news-video .section-heading::after {
  background: var(--news-gold);
}

.page-news .video-desc {
  font: var(--font-body);
  font-size: 1rem;
  color: var(--news-medium-gray);
  margin: -0.8rem 0 1.5rem;
  line-height: 1.5;
}

.page-news .video-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.2rem;
}

.page-news .video-card {
  margin: 0;
  background: var(--news-secondary);
  border-radius: var(--news-card-radius);
  overflow: hidden;
  transition: transform var(--news-transition), box-shadow var(--news-transition);
  display: flex;
  flex-direction: column;
}

.page-news .video-card:hover,
.page-news .video-card:focus-within {
  transform: translateY(-3px);
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.3);
}

.page-news .video-thumb {
  position: relative;
  overflow: hidden;
  aspect-ratio: 4 / 3;
}

.page-news .thumb-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform var(--news-transition);
}

.page-news .video-card:hover .thumb-img {
  transform: scale(1.03);
}

.page-news .play-badge {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.8rem;
  color: var(--news-gold);
  background: rgba(13, 27, 42, 0.45);
  transition: background var(--news-transition);
  cursor: pointer;
}

.page-news .video-card:hover .play-badge {
  background: rgba(13, 27, 42, 0.25);
}

.page-news .video-caption {
  padding: 0.9rem 1rem 1.1rem;
}

.page-news .video-title {
  font: var(--font-heading);
  font-size: 1rem;
  font-weight: 700;
  color: var(--news-white);
  margin: 0 0 0.3rem;
  letter-spacing: 0.02em;
}

.page-news .video-text {
  font: var(--font-body);
  font-size: 0.85rem;
  color: var(--news-medium-gray);
  margin: 0;
  line-height: 1.4;
}

.page-news .video-footer {
  margin-top: 1.5rem;
  text-align: center;
}

.page-news .btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.7rem 1.8rem;
  font: var(--font-body);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--news-primary);
  background: var(--news-gold);
  border: none;
  border-radius: 32px;
  text-decoration: none;
  transition: background var(--news-transition), transform var(--news-transition);
  cursor: pointer;
}

.page-news .btn-primary:hover,
.page-news .btn-primary:focus-visible {
  background: #e6c200;
  transform: translateY(-2px);
  outline: none;
}

/* ---- 探索导航区 ---- */
.page-news .news-explore {
  background: var(--news-light-gray);
  padding: 1.2rem 0;
  text-align: center;
}

.page-news .explore-text {
  font: var(--font-body);
  font-size: 0.92rem;
  color: var(--news-dark-gray);
  margin: 0;
}

.page-news .explore-text a {
  color: var(--news-accent);
  text-decoration: underline;
  font-weight: 600;
  transition: color var(--news-transition);
}

.page-news .explore-text a:hover,
.page-news .explore-text a:focus-visible {
  color: var(--news-gold);
}

/* ---- 响应式：平板及以上 ---- */
@media (min-width: 640px) {
  .page-news .hero-layout {
    flex-direction: row;
    align-items: center;
    gap: 2rem;
  }

  .page-news .hero-text {
    order: 1;
    flex: 1 1 55%;
  }

  .page-news .hero-visual {
    order: 2;
    flex: 1 1 40%;
    margin: 0;
    max-height: 280px;
    border-radius: 16px;
  }

  .page-news .hero-title {
    font-size: 2.8rem;
  }

  .page-news .hero-desc {
    font-size: 1.1rem;
  }

  .page-news .hero-visual {
    max-height: 320px;
  }

  .page-news .timeline::before {
    left: 140px;
  }

  .page-news .timeline-item {
    gap: 1.5rem;
  }

  .page-news .timeline-left {
    min-width: 130px;
    padding-top: 0.6rem;
    flex-direction: row;
    gap: 0.5rem;
    align-items: center;
  }

  .page-news .timeline-time {
    font-size: 0.8rem;
    margin-bottom: 0;
    background: transparent;
    padding: 0;
  }

  .page-news .timeline-dot {
    width: 18px;
    height: 18px;
  }

  .page-news .timeline-card {
    flex-direction: row;
  }

  .page-news .card-img {
    width: 160px;
    height: auto;
    min-height: 140px;
    flex-shrink: 0;
  }

  .page-news .card-body {
    padding: 1rem 1.2rem;
  }

  .page-news .video-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-news .tags-heading {
    font-size: 1.3rem;
  }

  .page-news .tag-btn {
    font-size: 0.9rem;
    padding: 0.5rem 1.3rem;
  }
}

/* ---- 响应式：桌面 ---- */
@media (min-width: 1024px) {
  .page-news .news-hero {
    padding: 3rem 0 0;
  }

  .page-news .hero-title {
    font-size: 3.5rem;
  }

  .page-news .hero-desc {
    font-size: 1.2rem;
  }

  .page-news .hero-visual {
    max-height: 380px;
  }

  .page-news .hero-bg {
    min-height: 240px;
  }

  .page-news .timeline-card {
    max-width: 780px;
  }

  .page-news .card-img {
    width: 200px;
  }

  .page-news .card-title {
    font-size: 1.15rem;
  }

  .page-news .card-text {
    font-size: 0.95rem;
  }

  .page-news .video-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-news .tags-header {
    margin-bottom: 1.2rem;
  }

  .page-news .tag-list {
    gap: 0.8rem;
  }

  .page-news .section-heading {
    font-size: 1.8rem;
  }

  .page-news .video-desc {
    font-size: 1.05rem;
  }
}