.page-news {
  --color-guide: #00FF87;
  --color-guide-bg: rgba(0, 255, 135, 0.10);
  --color-report: #FFD700;
  --color-report-bg: rgba(255, 215, 0, 0.10);
  --color-update: #4FC3F7;
  --color-update-bg: rgba(79, 195, 247, 0.10);
  --sidebar-width: 220px;
  --card-radius: 6px;
  --card-gap: 1.25rem;

  display: block;
  position: relative;
  padding: 0 1rem 3rem;
  max-width: 1280px;
  margin: 0 auto;
  color: var(--color-text, #FFFFFF);
  font-family: var(--font-body, Inter, sans-serif);
}

/* ── 面包屑 ── */
.page-news .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 0.25rem;
  padding: 1rem 0 0.5rem;
  font-size: 0.8125rem;
  color: var(--color-text-secondary, #B0B8C9);
}
.page-news .breadcrumb-item a {
  color: var(--color-accent, #00FF87);
  text-decoration: none;
  transition: opacity 0.2s;
}
.page-news .breadcrumb-item a:hover {
  opacity: 0.75;
}
.page-news .breadcrumb-item + .breadcrumb-item::before {
  content: "⁄";
  margin-right: 0.25rem;
  color: var(--color-text-dim, #7A85A0);
}

/* ── 英雄区 ── */
.page-news__hero {
  padding: 1.5rem 0 1rem;
  border-bottom: 2px solid var(--color-border, #1E3A5F);
  margin-bottom: 1.5rem;
}
.page-news__hero-title {
  font-family: var(--font-heading, Impact, sans-serif);
  font-size: clamp(2rem, 5.5vw, 3.2rem);
  font-weight: 900;
  line-height: 1.1;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  margin: 0 0 0.5rem;
  color: var(--color-text, #FFFFFF);
}
.page-news__hero-desc {
  font-size: 1rem;
  line-height: 1.5;
  color: var(--color-text-secondary, #B0B8C9);
  max-width: 640px;
  margin: 0;
}

/* ── 布局容器 ── */
.page-news__layout {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

/* ── 侧边栏 ── */
.page-news__sidebar {
  display: none;
}
.page-news__sidebar-inner {
  position: sticky;
  top: calc(var(--header-top-height, 60px) + 1rem);
  padding: 1.25rem;
  background: var(--color-surface, #112240);
  border: 1px solid var(--color-border, #1E3A5F);
  border-radius: var(--radius-md, 8px);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%);
}
.page-news__sidebar-heading {
  font-family: var(--font-heading, Impact, sans-serif);
  font-size: 0.875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-accent, #00FF87);
  margin: 0 0 0.75rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--color-border-light, #2A4A75);
}
.page-news__filter-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
}
.page-news__filter-list li {
  margin: 0;
  padding: 0;
}
.page-news__sidebar-note {
  font-size: 0.75rem;
  color: var(--color-text-dim, #7A85A0);
  margin: 1rem 0 0;
  line-height: 1.4;
}

/* ── 筛选按钮（通用） ── */
.page-news__filter-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.5rem 1rem;
  font-size: 0.8125rem;
  font-weight: 600;
  font-family: var(--font-body, Inter, sans-serif);
  color: var(--color-text-secondary, #B0B8C9);
  background: transparent;
  border: 1px solid var(--color-border, #1E3A5F);
  border-radius: var(--radius-sm, 4px);
  cursor: pointer;
  transition: all 0.25s ease;
  white-space: nowrap;
  width: 100%;
  text-align: left;
}
.page-news__filter-btn:hover {
  background: var(--color-surface-hover, #18335A);
  color: var(--color-text, #FFFFFF);
}
.page-news__filter-btn.is-active {
  background: var(--color-accent-dim, rgba(0,255,135,0.12));
  color: var(--color-accent, #00FF87);
  border-color: var(--color-accent, #00FF87);
}
.page-news__filter-btn--guide.is-active {
  background: var(--color-guide-bg);
  color: var(--color-guide);
  border-color: var(--color-guide);
}
.page-news__filter-btn--report.is-active {
  background: var(--color-report-bg);
  color: var(--color-report);
  border-color: var(--color-report);
}
.page-news__filter-btn--update.is-active {
  background: var(--color-update-bg);
  color: var(--color-update);
  border-color: var(--color-update);
}

/* ── 移动端筛选标签 ── */
.page-news__mobile-filters {
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
  padding: 0 0 0.75rem;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}
.page-news__mobile-filters::-webkit-scrollbar {
  display: none;
}
.page-news__mobile-filters .page-news__filter-btn {
  flex-shrink: 0;
  width: auto;
  text-align: center;
}

/* ── 文章列表区 ── */
.page-news__articles {
  position: relative;
  flex: 1;
  min-width: 0;
}

/* ── 背景装饰 ── */
.page-news__bg-decor {
  position: absolute;
  right: 0;
  bottom: 0;
  width: 40%;
  max-width: 400px;
  pointer-events: none;
  z-index: 0;
  opacity: 0.06;
  mix-blend-mode: screen;
}
.page-news__bg-img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: contain;
}

/* ── 分类区块 ── */
.page-news__section {
  position: relative;
  z-index: 1;
  margin-bottom: 2.5rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--color-border, #1E3A5F);
}
.page-news__section:last-of-type {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}
.page-news__section-header {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
  align-items: flex-start;
}
.page-news__section-img {
  width: 100%;
  max-width: 360px;
  height: auto;
  aspect-ratio: 400 / 250;
  object-fit: cover;
  border-radius: var(--radius-sm, 4px);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 6px), calc(100% - 6px) 100%, 0 100%);
  border: 1px solid var(--color-border-light, #2A4A75);
}
.page-news__section-icon {
  width: 80px;
  height: 80px;
  object-fit: contain;
  border-radius: 50%;
  background: var(--color-surface, #112240);
  border: 1px solid var(--color-border, #1E3A5F);
  padding: 0.5rem;
  flex-shrink: 0;
}
.page-news__section-title-group {
  flex: 1;
  min-width: 0;
}
.page-news__section-label {
  display: inline-block;
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-sm, 4px);
  margin-bottom: 0.375rem;
}
.page-news__section-label--guide {
  color: var(--color-guide);
  background: var(--color-guide-bg);
  border: 1px solid var(--color-guide);
}
.page-news__section-label--report {
  color: var(--color-report);
  background: var(--color-report-bg);
  border: 1px solid var(--color-report);
}
.page-news__section-label--update {
  color: var(--color-update);
  background: var(--color-update-bg);
  border: 1px solid var(--color-update);
}
.page-news__section-title {
  font-family: var(--font-heading, Impact, sans-serif);
  font-size: clamp(1.25rem, 3vw, 1.75rem);
  font-weight: 700;
  margin: 0 0 0.25rem;
  color: var(--color-text, #FFFFFF);
  line-height: 1.2;
}
.page-news__section-desc {
  font-size: 0.9375rem;
  color: var(--color-text-secondary, #B0B8C9);
  margin: 0;
  line-height: 1.5;
}

/* ── 卡片网格 ── */
.page-news__card-grid {
  gap: var(--card-gap);
}
.page-news .grid-2 {
  display: grid;
  grid-template-columns: 1fr;
}

/* ── 卡片 ── */
.page-news__card {
  background: var(--color-surface, #112240);
  border: 1px solid var(--color-border, #1E3A5F);
  border-radius: var(--radius-md, 8px);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%);
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.page-news__card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.35);
  border-color: var(--color-border-light, #2A4A75);
}
.page-news__card-body {
  padding: 1rem 1.125rem 1.125rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  flex: 1;
}
.page-news__tag {
  display: inline-block;
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-sm, 4px);
  align-self: flex-start;
  border: 1px solid transparent;
}
.page-news__tag--guide {
  color: var(--color-guide);
  background: var(--color-guide-bg);
  border-color: var(--color-guide);
}
.page-news__tag--report {
  color: var(--color-report);
  background: var(--color-report-bg);
  border-color: var(--color-report);
}
.page-news__tag--update {
  color: var(--color-update);
  background: var(--color-update-bg);
  border-color: var(--color-update);
}
.page-news__card-title {
  font-family: var(--font-heading, Impact, sans-serif);
  font-size: 1.0625rem;
  font-weight: 700;
  line-height: 1.25;
  margin: 0;
  color: var(--color-text, #FFFFFF);
}
.page-news__card-summary {
  font-size: 0.875rem;
  line-height: 1.5;
  color: var(--color-text-secondary, #B0B8C9);
  margin: 0;
  flex: 1;
}
.page-news__card-link {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-accent, #00FF87);
  text-decoration: none;
  transition: gap 0.25s ease, color 0.2s;
  margin-top: 0.25rem;
}
.page-news__card-link:hover {
  gap: 0.5rem;
  color: var(--color-accent2, #FFD700);
}
.page-news__card-link span {
  transition: transform 0.25s ease;
}
.page-news__card-link:hover span {
  transform: translateX(3px);
}

/* ── CTA ── */
.page-news__cta {
  position: relative;
  z-index: 1;
  margin-top: 2.5rem;
  padding-top: 2rem;
  border-top: 2px solid var(--color-border, #1E3A5F);
}
.page-news__cta-inner {
  text-align: center;
  padding: 2rem 1rem;
  background: var(--color-surface, #112240);
  border: 1px solid var(--color-border, #1E3A5F);
  border-radius: var(--radius-md, 8px);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%);
}
.page-news__cta-title {
  font-family: var(--font-heading, Impact, sans-serif);
  font-size: clamp(1.3rem, 3vw, 1.75rem);
  font-weight: 700;
  margin: 0 0 0.5rem;
  color: var(--color-text, #FFFFFF);
}
.page-news__cta-desc {
  font-size: 0.9375rem;
  color: var(--color-text-secondary, #B0B8C9);
  margin: 0 0 1.25rem;
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.5;
}
.page-news .btn-accent {
  display: inline-block;
  padding: 0.75rem 2rem;
  font-family: var(--font-heading, Impact, sans-serif);
  font-size: 0.9375rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-bg, #0B1D3A);
  background: var(--gradient-accent, linear-gradient(135deg, #00FF87, #FFD700));
  border: none;
  border-radius: var(--radius-sm, 4px);
  text-decoration: none;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  cursor: pointer;
}
.page-news .btn-accent:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(0, 255, 135, 0.25);
}

/* ── 滚动动画（渐进增强） ── */
[data-scroll-animate] {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

/* ── 桌面端：≥768px ── */
@media (min-width: 768px) {
  .page-news {
    padding: 0 2rem 4rem;
  }
  .page-news__layout {
    flex-direction: row;
    align-items: flex-start;
    gap: 2rem;
  }
  .page-news__sidebar {
    display: block;
    width: var(--sidebar-width);
    flex-shrink: 0;
  }
  .page-news__mobile-filters {
    display: none;
  }
  .page-news__articles {
    flex: 1;
    min-width: 0;
  }
  .page-news .grid-2 {
    grid-template-columns: 1fr 1fr;
  }
  .page-news__section-header {
    flex-direction: row;
    align-items: center;
    gap: 1.25rem;
  }
  .page-news__section-img {
    width: 220px;
    max-width: 220px;
    flex-shrink: 0;
  }
  .page-news__section-icon {
    width: 100px;
    height: 100px;
  }
  .page-news__card-body {
    padding: 1.125rem 1.25rem 1.25rem;
  }
  .page-news__bg-decor {
    width: 30%;
    max-width: 320px;
    opacity: 0.08;
  }
  .page-news__cta-inner {
    padding: 2.5rem 2rem;
  }
}

/* ── 桌面端较大：≥1024px ── */
@media (min-width: 1024px) {
  .page-news {
    padding: 0 2.5rem 5rem;
  }
  .page-news__sidebar {
    width: 240px;
  }
  .page-news .grid-2 {
    gap: 1.5rem;
  }
  .page-news__section-img {
    width: 260px;
    max-width: 260px;
  }
  .page-news__section-icon {
    width: 120px;
    height: 120px;
  }
  .page-news__card-title {
    font-size: 1.125rem;
  }
  .page-news__card-summary {
    font-size: 0.9rem;
  }
  .page-news__bg-decor {
    width: 25%;
    max-width: 280px;
    opacity: 0.1;
  }
}

/* ── 桌面端超大：≥1280px ── */
@media (min-width: 1280px) {
  .page-news__layout {
    gap: 2.5rem;
  }
  .page-news__sidebar {
    width: 260px;
  }
  .page-news .grid-2 {
    gap: 1.75rem;
  }
  .page-news__section-img {
    width: 300px;
    max-width: 300px;
  }
  .page-news__section-icon {
    width: 140px;
    height: 140px;
  }
}