.page-news {
  --_news-grid-line: rgba(26, 52, 96, 0.38);
  --_news-marker-shadow: rgba(61, 255, 131, 0.18);
  position: relative;
  padding-bottom: var(--space-7);
}

.page-news__wrap {
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

/* ===== 面包屑 ===== */
.page-news__crumbs {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  padding: var(--space-4) 0 var(--space-2);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
}

.page-news__crumbs a {
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.page-news__crumbs a:hover {
  color: var(--color-accent-green);
}

.page-news__crumbs-sep {
  color: var(--color-bg-line);
}

.page-news__crumbs-here {
  color: var(--color-white);
}

/* ===== 页头 ===== */
.page-news__hero {
  position: relative;
  padding: var(--space-3) 0 var(--space-5);
  margin-bottom: var(--space-5);
  border-bottom: 1px solid var(--color-bg-line);
  background-image:
    linear-gradient(var(--_news-grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--_news-grid-line) 1px, transparent 1px);
  background-size: 32px 32px;
}

.page-news__hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--color-accent-green) 0 64px, var(--color-bg-line) 64px 100%);
  clip-path: polygon(0 0, 100% 0, calc(100% - 28px) 100%, 0 100%);
}

.page-news__hero .eyebrow {
  margin-bottom: var(--space-2);
}

.page-news__hero h1 {
  font-family: var(--font-headings);
  font-size: clamp(38px, 6vw, 64px);
  font-weight: 700;
  line-height: 1.05;
  margin: 0 0 var(--space-3);
  max-width: 12em;
}

.page-news__hero-sub {
  font-size: 17px;
  line-height: 1.75;
  color: var(--color-text-muted);
  max-width: 62ch;
  margin: 0 0 var(--space-4);
}

.page-news__hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

/* ===== 左右布局 ===== */
.page-news__layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-5);
  align-items: start;
  margin-top: var(--space-5);
}

/* ===== 侧边栏 ===== */
.page-news__sidebar {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.page-news__sidebar-title {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin: 0;
  font-family: var(--font-headings);
  font-size: 14px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.page-news__sidebar-title::before {
  content: "";
  width: 22px;
  height: 4px;
  background: var(--color-accent-green);
  clip-path: polygon(0 0, 100% 0, 82% 100%, 0 100%);
}

.page-news__category-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-news__category {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border: 1px solid var(--color-bg-line);
  border-radius: var(--radius-pill);
  color: var(--color-body-text);
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  background: transparent;
  transition:
    border-color var(--transition-fast),
    color var(--transition-fast),
    background var(--transition-fast),
    box-shadow var(--transition-fast);
}

.page-news__category::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
  opacity: 0.4;
}

.page-news__category:hover {
  border-color: var(--color-accent-green);
  color: var(--color-white);
  box-shadow: 0 0 18px var(--_news-marker-shadow);
}

.page-news__category.is-active {
  background: var(--color-accent-green);
  border-color: var(--color-accent-green);
  color: var(--color-bg-deep);
  font-weight: 700;
}

.page-news__category.is-active::before {
  background: var(--color-bg-deep);
  opacity: 1;
}

.page-news__sidebar-note {
  position: relative;
  padding: var(--space-4);
  background: var(--color-bg-panel);
  border: 1px solid var(--color-bg-line);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.page-news__sidebar-note::after {
  content: "";
  position: absolute;
  top: -36px;
  right: -36px;
  width: 90px;
  height: 90px;
  border-radius: 50%;
  background: rgba(61, 255, 131, 0.12);
}

.page-news__sidebar-note-title {
  margin: 0 0 var(--space-2);
  font-family: var(--font-headings);
  font-size: 16px;
  letter-spacing: 0.03em;
  color: var(--color-white);
}

.page-news__sidebar-note p {
  margin: 0 0 var(--space-3);
  font-size: 14px;
  line-height: 1.78;
  color: var(--color-text-muted);
}

.page-news__sidebar-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--color-accent-green);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  transition: gap var(--transition-fast);
}

.page-news__sidebar-link:hover {
  gap: 10px;
  text-decoration: underline;
}

/* ===== 头条专题 ===== */
.page-news__feature {
  position: relative;
  display: flex;
  align-items: flex-end;
  min-height: 460px;
  margin-bottom: var(--space-5);
  background: var(--color-bg-black);
  border: 1px solid var(--color-bg-line);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.page-news__feature-media {
  position: absolute;
  inset: 0;
}

.page-news__feature-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.page-news__feature-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(4, 10, 20, 0.1) 0%, rgba(4, 10, 20, 0.42) 55%, rgba(4, 10, 20, 0.93) 100%);
  transition: background var(--transition-base);
}

.page-news__feature:hover .page-news__feature-media img {
  transform: scale(1.03);
}

.page-news__feature:hover .page-news__feature-media::after {
  background: linear-gradient(180deg, rgba(4, 10, 20, 0.08) 0%, rgba(4, 10, 20, 0.36) 55%, rgba(4, 10, 20, 0.91) 100%);
}

.page-news__feature-body {
  position: relative;
  z-index: 1;
  width: 100%;
  padding: var(--space-4);
}

.page-news__feature-tags {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-3);
}

.page-news__feature-body h2 {
  margin: 0 0 var(--space-2);
  max-width: 22ch;
  font-family: var(--font-headings);
  font-size: 28px;
  line-height: 1.15;
  color: var(--color-white);
  text-shadow: 0 2px 18px rgba(0, 0, 0, 0.45);
}

.page-news__feature-body p {
  max-width: 58ch;
  margin: 0 0 var(--space-3);
  font-size: 15px;
  line-height: 1.7;
  color: var(--color-body-text);
}

/* ===== 相对时间标签 ===== */
.page-news__relative-time {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  background: rgba(4, 10, 20, 0.25);
  border: 1px solid var(--color-bg-line);
  border-radius: var(--radius-pill);
}

/* ===== 时间线新闻流 ===== */
.page-news__timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--space-4);
  position: relative;
}

.page-news__item {
  position: relative;
}

.page-news__card {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  position: relative;
  background: var(--color-bg-panel);
  border: 1px solid var(--color-bg-line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition:
    border-color var(--transition-base),
    transform var(--transition-base),
    box-shadow var(--transition-base);
}

.page-news__card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--color-accent-green);
  opacity: 0.4;
  z-index: 2;
  transition: width var(--transition-fast), opacity var(--transition-fast);
}

.page-news__card:hover {
  border-color: rgba(61, 255, 131, 0.55);
  transform: translateY(-2px);
  box-shadow: 0 14px 40px rgba(0, 0, 0, 0.3);
}

.page-news__card:hover::before {
  width: 6px;
  opacity: 1;
}

.page-news__card-media {
  position: relative;
  min-height: 180px;
  overflow: hidden;
  background: var(--color-bg-deep);
}

.page-news__card-media img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.45s ease;
}

.page-news__card:hover .page-news__card-media img {
  transform: scale(1.04);
}

.page-news__card-body {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-2);
  padding: var(--space-4);
}

.page-news__card-top {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
}

.page-news__card-body h3 {
  margin: 0;
  font-family: var(--font-headings);
  font-size: 19px;
  line-height: 1.32;
}

.page-news__card-body h3 a {
  color: var(--color-white);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.page-news__card-body h3 a:hover {
  color: var(--color-accent-green);
}

.page-news__card-body p {
  margin: 0;
  font-size: 14px;
  line-height: 1.68;
  color: var(--color-text-muted);
}

/* ===== 更多入口 ===== */
.page-news__more {
  position: relative;
  margin-top: var(--space-5);
  padding: var(--space-5) var(--space-4);
  background: var(--color-bg-panel);
  border: 1px solid var(--color-bg-line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  text-align: center;
  display: grid;
  justify-items: center;
  gap: var(--space-3);
}

.page-news__more::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--color-accent-green), var(--color-flow-cyan), var(--color-accent-orange), transparent);
}

.page-news__more p {
  margin: 0;
  max-width: 46ch;
  font-size: 15px;
  line-height: 1.7;
  color: var(--color-text-muted);
}

.page-news__more-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 26px;
  border: 1px solid var(--color-accent-green);
  border-radius: var(--radius-pill);
  color: var(--color-accent-green);
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  transition: background var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
}

.page-news__more-link:hover {
  background: rgba(61, 255, 131, 0.12);
  color: var(--color-white);
  transform: translateY(-2px);
}

/* ===== 中屏：卡片双栏 ===== */
@media (min-width: 680px) {
  .page-news__feature-body {
    padding: var(--space-5);
  }

  .page-news__feature-body h2 {
    font-size: 36px;
  }

  .page-news__card--media {
    grid-template-columns: 200px minmax(0, 1fr);
  }

  .page-news__card--media .page-news__card-media {
    min-height: 100%;
  }
}

/* ===== 桌面：左右分屏 + 时间线 ===== */
@media (min-width: 960px) {
  .page-news__hero h1 {
    font-size: 60px;
  }

  .page-news__layout {
    grid-template-columns: 236px minmax(0, 1fr);
    gap: var(--space-6);
  }

  .page-news__sidebar {
    position: sticky;
    top: 132px;
  }

  .page-news__category-list {
    flex-direction: column;
    gap: 8px;
  }

  .page-news__category {
    width: 100%;
    justify-content: flex-start;
  }

  .page-news__timeline {
    padding-left: 32px;
  }

  .page-news__timeline::before {
    content: "";
    position: absolute;
    left: 4px;
    top: 0;
    bottom: 0;
    width: 1px;
    background: linear-gradient(to bottom, var(--color-bg-line), var(--color-accent-green), var(--color-bg-line));
  }

  .page-news__item::before {
    content: "";
    position: absolute;
    left: -28px;
    top: 24px;
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background: var(--color-accent-green);
    box-shadow: 0 0 0 3px var(--_news-marker-shadow);
    z-index: 1;
  }

  .page-news__feature {
    min-height: 560px;
  }
}