.page-news {
  --page-news-line-color: var(--color-gold, #F5B041);
  --page-news-line-width: 3px;
  --page-news-dot-size: 16px;
  --page-news-card-radius: 12px;
  --page-news-card-bg: rgba(15, 43, 92, 0.65);
  --page-news-card-bg-hover: rgba(15, 43, 92, 0.85);
  --page-news-card-border: rgba(245, 176, 65, 0.25);
  --page-news-card-border-hover: rgba(245, 176, 65, 0.55);
  --page-news-accent: var(--color-fluorescent-green, #00FF84);
  --page-news-text: var(--color-text-primary, #f0f4f8);
  --page-news-text-secondary: var(--color-text-secondary, #b0c4de);
  --page-news-gap: 2.5rem;
  --page-news-timeline-offset: 28px;

  display: block;
  width: 100%;
  background-color: var(--color-bg-primary, #0B1A34);
  color: var(--page-news-text);
  font-family: var(--font-body, 'Source Sans Pro', sans-serif);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* 内部容器 */
.page-news__inner {
  max-width: var(--content-max-width, 1200px);
  margin: 0 auto;
  padding: 1.5rem var(--content-padding, 1.5rem) 3rem;
}

/* 面包屑 */
.page-news__breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.85rem;
  margin-bottom: 1.5rem;
  color: var(--page-news-text-secondary);
  letter-spacing: 0.01em;
}
.page-news__breadcrumb-link {
  color: var(--page-news-text-secondary);
  text-decoration: none;
  transition: color 0.2s;
}
.page-news__breadcrumb-link:hover {
  color: var(--page-news-accent);
}
.page-news__breadcrumb-sep {
  color: var(--page-news-line-color);
  opacity: 0.6;
}
.page-news__breadcrumb-current {
  color: var(--page-news-text);
  font-weight: 600;
}

/* Hero 区 */
.page-news__hero {
  margin-bottom: 2.8rem;
  position: relative;
}
.page-news__hero-title {
  font-family: var(--font-heading, 'Inter', sans-serif);
  font-size: clamp(2.4rem, 8vw, 4.2rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin: 0 0 0.5rem;
  background: linear-gradient(135deg, var(--page-news-text) 40%, var(--page-news-line-color) 85%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.page-news__hero-sub {
  font-size: 1.1rem;
  color: var(--page-news-text-secondary);
  margin: 0 0 1.2rem;
  max-width: 520px;
  line-height: 1.5;
}
.page-news__hero-line {
  width: 80px;
  height: 4px;
  background: linear-gradient(90deg, var(--page-news-line-color), transparent);
  border-radius: 2px;
  margin-bottom: 1.5rem;
}

/* 筛选按钮 */
.page-news__filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}
.page-news__filter-btn {
  display: inline-flex;
  align-items: center;
  padding: 0.45rem 1.2rem;
  font-family: var(--font-heading, 'Inter', sans-serif);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--page-news-text-secondary);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.10);
  border-radius: 24px;
  cursor: pointer;
  transition: all 0.25s ease;
  -webkit-appearance: none;
  appearance: none;
}
.page-news__filter-btn:hover {
  background: rgba(0, 255, 132, 0.12);
  border-color: rgba(0, 255, 132, 0.30);
  color: var(--page-news-text);
}
.page-news__filter-btn.is-active {
  background: rgba(0, 255, 132, 0.18);
  border-color: var(--page-news-accent);
  color: var(--page-news-accent);
  box-shadow: 0 0 20px rgba(0, 255, 132, 0.12);
}

/* 时间线容器 */
.page-news__timeline {
  position: relative;
  padding-left: var(--page-news-timeline-offset);
  margin-bottom: 2.5rem;
}

/* 时间线竖线 */
.page-news__timeline-line {
  position: absolute;
  left: calc(var(--page-news-timeline-offset) / 2 - var(--page-news-line-width) / 2);
  top: 0;
  bottom: 0;
  width: var(--page-news-line-width);
  background: linear-gradient(180deg, var(--page-news-line-color) 0%, rgba(245, 176, 65, 0.20) 80%, transparent 100%);
  border-radius: 2px;
}

/* 卡片 */
.page-news__card {
  position: relative;
  margin-bottom: var(--page-news-gap);
  opacity: 1;
  transition: opacity 0.4s ease, transform 0.4s ease;
}
.page-news__card[data-filter-target]:not([data-filter-target=""]) {
  /* 由 JS 控制显隐，默认全部可见 */
}

/* 时间线圆点 */
.page-news__card-dot {
  position: absolute;
  left: calc(var(--page-news-timeline-offset) / 2 - var(--page-news-dot-size) / 2);
  top: 28px;
  width: var(--page-news-dot-size);
  height: var(--page-news-dot-size);
  border-radius: 50%;
  background: var(--page-news-line-color);
  border: 3px solid var(--color-bg-primary, #0B1A34);
  box-shadow: 0 0 0 3px rgba(245, 176, 65, 0.30), 0 0 18px rgba(245, 176, 65, 0.15);
  z-index: 2;
}

/* 卡片内部 */
.page-news__card-inner {
  background: var(--page-news-card-bg);
  border: 1px solid var(--page-news-card-border);
  border-radius: var(--page-news-card-radius);
  overflow: hidden;
  transition: transform 0.35s ease, box-shadow 0.35s ease, border-color 0.35s ease, background 0.35s ease;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}
.page-news__card-inner:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.45), 0 0 0 1px rgba(245, 176, 65, 0.15);
  border-color: var(--page-news-card-border-hover);
  background: var(--page-news-card-bg-hover);
}

/* 卡片图片 */
.page-news__card-img-wrap {
  width: 100%;
  overflow: hidden;
  background: var(--color-deep-blue, #0F2B5C);
}
.page-news__card-img-wrap--square {
  max-width: 160px;
  margin: 1.2rem auto 0;
  border-radius: 8px;
}
@media (min-width: 640px) {
  .page-news__card-img-wrap--square {
    max-width: 180px;
    margin: 0;
    flex-shrink: 0;
    border-radius: 10px 0 0 10px;
  }
}
.page-news__card-img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  aspect-ratio: attr(width) / attr(height);
}
.page-news__card-img--contain {
  object-fit: contain;
  background: var(--color-deep-blue, #0F2B5C);
  padding: 0.5rem;
}

/* 卡片内容区 */
.page-news__card-body {
  padding: 1.2rem 1.4rem 1.6rem;
}
@media (min-width: 640px) {
  .page-news__card-inner {
    display: flex;
    align-items: flex-start;
  }
  .page-news__card-img-wrap {
    flex-shrink: 0;
    width: 260px;
    border-radius: var(--page-news-card-radius) 0 0 var(--page-news-card-radius);
  }
  .page-news__card-img-wrap--square {
    width: 180px;
  }
  .page-news__card-body {
    flex: 1;
    padding: 1.4rem 1.8rem 1.8rem;
  }
}
@media (min-width: 960px) {
  .page-news__card-img-wrap {
    width: 320px;
  }
  .page-news__card-img-wrap--square {
    width: 200px;
  }
  .page-news__card-body {
    padding: 1.8rem 2.2rem 2rem;
  }
}

/* 标签 */
.page-news__card-tag {
  display: inline-block;
  padding: 0.2rem 0.8rem;
  font-family: var(--font-heading, 'Inter', sans-serif);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--page-news-accent);
  background: rgba(0, 255, 132, 0.12);
  border-radius: 20px;
  margin-bottom: 0.6rem;
  border: 1px solid rgba(0, 255, 132, 0.15);
}

/* 标题 */
.page-news__card-title {
  font-family: var(--font-heading, 'Inter', sans-serif);
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1.25;
  margin: 0 0 0.5rem;
  color: var(--page-news-text);
  letter-spacing: -0.01em;
}
@media (min-width: 640px) {
  .page-news__card-title {
    font-size: 1.7rem;
  }
}
@media (min-width: 960px) {
  .page-news__card-title {
    font-size: 1.9rem;
  }
}

/* 摘要 */
.page-news__card-summary {
  font-size: 1rem;
  color: var(--page-news-text-secondary);
  margin: 0 0 0.8rem;
  line-height: 1.6;
  max-width: 600px;
}

/* details / summary 展开 */
.page-news__card-details {
  margin-top: 0.4rem;
}
.page-news__card-summary-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-family: var(--font-heading, 'Inter', sans-serif);
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--page-news-line-color);
  cursor: pointer;
  padding: 0.2rem 0;
  transition: color 0.2s;
  list-style: none;
}
.page-news__card-summary-btn::-webkit-details-marker {
  display: none;
}
.page-news__card-summary-btn:hover {
  color: var(--page-news-accent);
}
.page-news__card-arrow {
  display: inline-block;
  transition: transform 0.25s ease;
}
.page-news__card-details[open] .page-news__card-arrow {
  transform: rotate(90deg);
}
.page-news__card-detail-content {
  margin-top: 0.8rem;
  padding-top: 0.8rem;
  border-top: 1px solid rgba(245, 176, 65, 0.15);
  font-size: 0.95rem;
  color: var(--page-news-text-secondary);
  line-height: 1.7;
}
.page-news__card-detail-content p {
  margin: 0 0 0.5rem;
}
.page-news__card-extra {
  margin-top: 0.6rem;
  font-size: 0.9rem;
}
.page-news__card-link {
  color: var(--page-news-accent);
  text-decoration: none;
  font-weight: 600;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s, color 0.2s;
}
.page-news__card-link:hover {
  color: var(--page-news-line-color);
  border-bottom-color: var(--page-news-line-color);
}

/* 了解更多区域 */
.page-news__more {
  margin: 3rem 0 2rem;
  padding: 2rem 1.5rem;
  background: rgba(255, 255, 255, 0.03);
  border-radius: 16px;
  border: 1px solid rgba(245, 176, 65, 0.10);
}
.page-news__more-title {
  font-family: var(--font-heading, 'Inter', sans-serif);
  font-size: 1.2rem;
  font-weight: 700;
  margin: 0 0 1rem;
  color: var(--page-news-text);
}
.page-news__more-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem 1.6rem;
}
.page-news__more-link {
  color: var(--page-news-text-secondary);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  transition: color 0.2s;
}
.page-news__more-link:hover {
  color: var(--page-news-accent);
}

/* 底部品牌装饰 */
.page-news__brand-deco {
  display: flex;
  justify-content: center;
  margin-top: 2rem;
  padding: 1.5rem 0 0.5rem;
  opacity: 0.60;
}
.page-news__brand-img {
  display: block;
  max-width: 100%;
  height: auto;
  object-fit: contain;
  opacity: 0.70;
}

/* 筛选隐藏状态（配合JS，无JS时全部可见） */
.page-news__card.is-hidden {
  display: none;
}

/* 移动端额外适配 */
@media (max-width: 639px) {
  .page-news__inner {
    padding: 1rem 1rem 2.5rem;
  }
  .page-news__timeline {
    padding-left: 24px;
  }
  .page-news__timeline-line {
    left: 9px;
  }
  .page-news__card-dot {
    left: 7px;
    top: 22px;
    width: 14px;
    height: 14px;
    border-width: 2px;
  }
  .page-news__card-body {
    padding: 0.9rem 1rem 1.2rem;
  }
  .page-news__card-title {
    font-size: 1.25rem;
  }
  .page-news__card-img-wrap--square {
    max-width: 120px;
    margin: 0.8rem auto 0;
  }
  .page-news__more {
    padding: 1.2rem 1rem;
  }
  .page-news__more-list {
    flex-direction: column;
    gap: 0.5rem;
  }
  .page-news__brand-deco {
    margin-top: 1rem;
    padding-top: 0.8rem;
  }
}

/* 桌面端增强 */
@media (min-width: 1024px) {
  .page-news__inner {
    padding: 2rem var(--content-padding, 1.5rem) 4rem;
  }
  .page-news__timeline {
    padding-left: 40px;
  }
  .page-news__timeline-line {
    left: 16px;
    width: 4px;
  }
  .page-news__card-dot {
    left: 10px;
    top: 34px;
    width: 20px;
    height: 20px;
    border-width: 4px;
    box-shadow: 0 0 0 4px rgba(245, 176, 65, 0.25), 0 0 30px rgba(245, 176, 65, 0.10);
  }
  .page-news__card {
    margin-bottom: 3rem;
  }
  .page-news__card-inner {
    transition: transform 0.4s cubic-bezier(0.22, 1, 0.36, 1), box-shadow 0.4s ease, border-color 0.4s ease;
  }
  .page-news__card-inner:hover {
    transform: translateY(-6px);
    box-shadow: 0 24px 56px rgba(0, 0, 0, 0.50), 0 0 0 1px rgba(245, 176, 65, 0.20);
  }
  .page-news__more {
    padding: 2.5rem 2.8rem;
    margin-top: 4rem;
  }
  .page-news__more-list {
    gap: 1rem 2.4rem;
  }
  .page-news__more-link {
    font-size: 1rem;
  }
}