/* ===== 页面专属：.page-news ===== */
.page-news {
  --color-timeline-accent: #B829F0;
  --color-timeline-glow: rgba(184, 41, 240, 0.25);
  --color-card-bg: rgba(22, 27, 34, 0.72);
  --color-card-border: rgba(48, 54, 61, 0.5);
  --color-card-hover-border: rgba(184, 41, 240, 0.5);
  --color-text-accent: #39FF14;
  --font-data-stack: 'JetBrains Mono', monospace;
  --timeline-line-width: 2px;
  --marker-size: 48px;
  position: relative;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px 60px;
  color: var(--color-text-high-contrast);
  font-family: var(--font-body, 'Inter', sans-serif);
}

/* 面包屑 */
.page-news__context {
  padding: 16px 0 8px;
}
.page-news__breadcrumb {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 6px 12px;
  margin: 0;
  padding: 0;
  font-size: 0.875rem;
  color: var(--color-text-medium);
}
.page-news__breadcrumb-item {
  display: flex;
  align-items: center;
  gap: 6px;
}
.page-news__breadcrumb-item + .page-news__breadcrumb-item::before {
  content: "·";
  color: var(--color-divider);
  margin-right: 4px;
}
.page-news__breadcrumb-item a {
  color: var(--color-accent-neon-purple);
  text-decoration: none;
  transition: opacity 0.2s;
}
.page-news__breadcrumb-item a:hover,
.page-news__breadcrumb-item a:focus-visible {
  opacity: 0.7;
  outline: 2px solid var(--color-accent-neon-purple);
  outline-offset: 2px;
}

/* 首屏标题区 */
.page-news__hero {
  position: relative;
  padding: 40px 0 32px;
  margin-bottom: 24px;
  border-bottom: 1px solid var(--color-divider);
  overflow: hidden;
}
.page-news__hero-bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(10, 25, 47, 0.6) 0%, rgba(13, 17, 23, 0.9) 100%);
  z-index: 0;
  pointer-events: none;
}
.page-news__hero-title {
  position: relative;
  z-index: 1;
  font-family: var(--font-heading, 'Inter', sans-serif);
  font-weight: 800;
  font-size: clamp(2.2rem, 6vw, 4rem);
  letter-spacing: -0.03em;
  margin: 0 0 12px;
  line-height: 1.1;
  background: linear-gradient(135deg, #FFFFFF 0%, #C0C0C0 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.page-news__hero-desc {
  position: relative;
  z-index: 1;
  font-size: 1.125rem;
  color: var(--color-text-medium);
  max-width: 600px;
  margin: 0 0 16px;
  line-height: 1.5;
}
.page-news__hero-meta {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}
.page-news__hero-tag {
  display: inline-block;
  padding: 4px 14px;
  font-size: 0.8rem;
  font-weight: 600;
  font-family: var(--font-data-stack);
  background: var(--color-accent-neon-purple);
  color: #FFFFFF;
  border-radius: 20px;
  letter-spacing: 0.04em;
}
.page-news__hero-date {
  font-size: 0.85rem;
  color: var(--color-primary-metallic-silver);
  font-family: var(--font-data-stack);
}

/* 搜索过滤区 */
.page-news__filter {
  margin-bottom: 40px;
}
.page-news__filter-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  max-width: 520px;
}
.page-news__filter-input {
  flex: 1 1 200px;
  padding: 10px 16px;
  font-size: 1rem;
  font-family: var(--font-body);
  color: var(--color-text-high-contrast);
  background: var(--color-bg-card);
  border: 1px solid var(--color-divider);
  border-radius: 8px;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.page-news__filter-input::placeholder {
  color: var(--color-text-medium);
  opacity: 0.7;
}
.page-news__filter-input:focus {
  border-color: var(--color-accent-neon-purple);
  box-shadow: 0 0 0 3px var(--color-hover-glow);
}
.page-news__filter-hint {
  font-size: 0.8rem;
  color: var(--color-text-medium);
  font-style: italic;
}

/* 时间线容器 */
.page-news__timeline {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0;
}

/* 每个章节 */
.page-news__chapter {
  display: flex;
  gap: 24px;
  position: relative;
  padding: 32px 0;
}
/* 时间线标记列 */
.page-news__chapter-marker {
  display: flex;
  flex-direction: column;
  align-items: center;
  flex-shrink: 0;
  width: var(--marker-size);
  position: relative;
  z-index: 2;
}
.page-news__chapter-num {
  display: flex;
  align-items: center;
  justify-content: center;
  width: var(--marker-size);
  height: var(--marker-size);
  border-radius: 50%;
  background: var(--color-bg-dark);
  border: 2px solid var(--color-timeline-accent);
  font-family: var(--font-data-stack);
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-timeline-accent);
  box-shadow: 0 0 12px var(--color-timeline-glow);
  transition: transform 0.2s, box-shadow 0.2s;
}
.page-news__chapter:hover .page-news__chapter-num,
.page-news__chapter:focus-within .page-news__chapter-num {
  transform: scale(1.08);
  box-shadow: 0 0 20px rgba(184, 41, 240, 0.45);
}
.page-news__chapter-line {
  display: block;
  width: var(--timeline-line-width);
  flex: 1;
  min-height: 60px;
  background: linear-gradient(to bottom, var(--color-timeline-accent), transparent);
  opacity: 0.4;
}

/* 章节内容区 */
.page-news__chapter-content {
  flex: 1;
  min-width: 0;
}
.page-news__chapter-heading {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: clamp(1.4rem, 3vw, 2rem);
  letter-spacing: -0.02em;
  margin: 0 0 12px;
  color: var(--color-text-high-contrast);
  position: relative;
  display: inline-block;
}
.page-news__chapter-heading::after {
  content: "";
  display: block;
  width: 60%;
  height: 4px;
  margin-top: 4px;
  background: linear-gradient(90deg, var(--color-timeline-accent), transparent);
  border-radius: 2px;
}
.page-news__chapter-intro {
  font-size: 1rem;
  color: var(--color-text-medium);
  max-width: 580px;
  margin: 0 0 20px;
  line-height: 1.6;
}
.page-news__highlight {
  color: var(--color-accent-neon-green);
  font-weight: 600;
}

/* 卡片组 */
.page-news__card-group {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  margin-bottom: 20px;
}
.page-news__card-group--wide {
  grid-template-columns: 1fr;
}
.page-news__card-group--three {
  grid-template-columns: 1fr;
}

/* 卡片 */
.page-news__card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-card-border);
  border-radius: 12px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.25s ease, border-color 0.25s, box-shadow 0.25s;
  cursor: default;
  position: relative;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}
.page-news__card:hover,
.page-news__card:focus-within {
  transform: translateY(-4px);
  border-color: var(--color-card-hover-border);
  box-shadow: 0 8px 30px var(--color-timeline-glow);
}
.page-news__card-visual {
  position: relative;
  overflow: hidden;
  aspect-ratio: 3 / 2;
  background: var(--color-bg-dark);
}
.page-news__card-img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s;
}
.page-news__card:hover .page-news__card-img,
.page-news__card:focus-within .page-news__card-img {
  transform: scale(1.03);
}
.page-news__card-icon {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(10, 25, 47, 0.75);
  border-radius: 50%;
  color: var(--color-timeline-accent);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  border: 1px solid rgba(184, 41, 240, 0.3);
}
.page-news__card-body {
  padding: 18px 20px 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 1;
}
.page-news__card-title {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.125rem;
  letter-spacing: -0.01em;
  margin: 0;
  color: var(--color-text-high-contrast);
}
.page-news__card-text {
  font-size: 0.925rem;
  line-height: 1.6;
  color: var(--color-text-medium);
  margin: 0;
}
.page-news__card-meta {
  display: inline-block;
  font-size: 0.75rem;
  font-family: var(--font-data-stack);
  color: var(--color-accent-neon-green);
  letter-spacing: 0.03em;
  text-transform: uppercase;
  margin-top: auto;
  padding-top: 8px;
  border-top: 1px solid var(--color-divider);
}
.page-news__card-stats {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  margin-top: 4px;
}
.page-news__stat {
  font-size: 0.85rem;
  color: var(--color-text-medium);
  display: flex;
  align-items: center;
  gap: 4px;
}
.page-news__stat-value {
  font-family: var(--font-data-stack);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--color-timeline-accent);
}

/* 特色卡片 */
.page-news__card--featured {
  grid-column: 1 / -1;
}
.page-news__card--featured .page-news__card-visual {
  aspect-ratio: 3 / 1;
}

/* 章节底部链接 */
.page-news__chapter-footer {
  padding-top: 8px;
  display: flex;
  justify-content: flex-end;
}
.page-news__link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-accent-neon-purple);
  text-decoration: none;
  padding: 6px 12px;
  border-radius: 6px;
  transition: background 0.2s, color 0.2s;
}
.page-news__link:hover,
.page-news__link:focus-visible {
  background: rgba(184, 41, 240, 0.12);
  color: var(--color-text-high-contrast);
  outline: 2px solid var(--color-accent-neon-purple);
  outline-offset: 2px;
}

/* 信任声明 */
.page-news__trust {
  margin-top: 40px;
  padding: 28px 24px;
  border-top: 1px solid var(--color-divider);
  border-bottom: 1px solid var(--color-divider);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  background: rgba(22, 27, 34, 0.4);
  border-radius: 12px;
}
.page-news__trust-text {
  font-size: 0.95rem;
  color: var(--color-text-medium);
  margin: 0;
  max-width: 540px;
  line-height: 1.5;
}
.page-news__trust-links {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

/* 可折叠面板 */
.page-news__extra {
  margin-top: 32px;
  border: 1px solid var(--color-divider);
  border-radius: 10px;
  overflow: hidden;
  background: var(--color-bg-card);
}
.page-news__extra-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 14px 20px;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-text-high-contrast);
  background: transparent;
  border: none;
  cursor: pointer;
  transition: background 0.2s;
  font-family: var(--font-body);
}
.page-news__extra-toggle:hover,
.page-news__extra-toggle:focus-visible {
  background: rgba(184, 41, 240, 0.08);
  outline: 2px solid var(--color-accent-neon-purple);
  outline-offset: -2px;
}
.page-news__extra-toggle-icon {
  font-size: 1.4rem;
  font-weight: 300;
  color: var(--color-timeline-accent);
  transition: transform 0.2s;
}
.page-news__extra-toggle[aria-expanded="true"] .page-news__extra-toggle-icon {
  transform: rotate(45deg);
}
.page-news__extra-body {
  padding: 0 20px 20px;
}
.page-news__extra-text {
  font-size: 0.925rem;
  color: var(--color-text-medium);
  margin: 0;
  line-height: 1.6;
}

/* ===== 响应式 ===== */
@media (min-width: 600px) {
  .page-news__card-group {
    grid-template-columns: 1fr 1fr;
  }
  .page-news__card-group--three {
    grid-template-columns: 1fr 1fr;
  }
  .page-news__card--featured .page-news__card-visual {
    aspect-ratio: 3 / 1.2;
  }
}
@media (min-width: 860px) {
  .page-news {
    padding: 0 32px 80px;
  }
  .page-news__chapter {
    gap: 40px;
    padding: 48px 0;
  }
  .page-news__card-group--three {
    grid-template-columns: 1fr 1fr 1fr;
  }
  .page-news__card--featured {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
  }
  .page-news__card--featured .page-news__card-visual {
    aspect-ratio: unset;
    height: 100%;
  }
  .page-news__card--featured .page-news__card-body {
    justify-content: center;
  }
  .page-news__trust {
    flex-direction: row;
    padding: 32px 40px;
  }
}
@media (min-width: 1024px) {
  .page-news__hero {
    padding: 60px 0 40px;
  }
  .page-news__hero-title {
    font-size: 3.6rem;
  }
  .page-news__chapter {
    gap: 56px;
  }
  .page-news__chapter-marker {
    width: 56px;
  }
  .page-news__chapter-num {
    width: 56px;
    height: 56px;
    font-size: 1.2rem;
  }
  .page-news__card-body {
    padding: 22px 24px 24px;
  }
}

/* 窄屏优化：防止横向溢出 */
@media (max-width: 420px) {
  .page-news {
    padding: 0 12px 40px;
  }
  .page-news__chapter {
    gap: 14px;
    padding: 24px 0;
  }
  .page-news__chapter-marker {
    width: 36px;
  }
  .page-news__chapter-num {
    width: 36px;
    height: 36px;
    font-size: 0.8rem;
  }
  .page-news__card-visual {
    aspect-ratio: 4 / 3;
  }
  .page-news__filter-input {
    font-size: 0.925rem;
  }
  .page-news__trust {
    flex-direction: column;
    align-items: flex-start;
    padding: 20px;
  }
}
</style>