/* ===== page-news 专属样式 ===== */
.page-news {
  --news-gap: 4rem;
  --card-radius: 4px;
  --card-border-w: 4px;
  --card-shadow: 8px 8px 0 rgba(0,0,0,0.45);
  --card-shadow-hover: 12px 12px 0 rgba(0,0,0,0.55);
  --tag-bg: rgba(0,212,255,0.12);
  --tag-border: #00D4FF;
  --timeline-line: #D4A843;
  --timeline-dot: #D4A843;
  --num-color: rgba(212,168,67,0.18);
  --summary-focus: #00D4FF;

  background-color: #0A1F3F;
  color: #FFFFFF;
}

/* 容器复用共享 .container，但在此调整内边距 */
.page-news .container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem 1.5rem 3rem;
}

/* ===== 面包屑 ===== */
.page-news .breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: #B0B8C4;
  margin-bottom: 2.5rem;
  letter-spacing: 0.02em;
}
.page-news .breadcrumb-link {
  color: #B0B8C4;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.2s, border-color 0.2s;
}
.page-news .breadcrumb-link:hover,
.page-news .breadcrumb-link:focus-visible {
  color: #00D4FF;
  border-bottom-color: #00D4FF;
  outline: none;
}
.page-news .breadcrumb-separator {
  color: #D4A843;
  font-weight: 700;
}
.page-news .breadcrumb-current {
  color: #D4A843;
  font-weight: 600;
}

/* ===== 页面标题区 ===== */
.page-news__header {
  margin-bottom: 3.5rem;
}
.page-news__title {
  font-family: "Noto Sans SC", sans-serif;
  font-weight: 800;
  font-style: italic;
  font-size: 2.8rem;
  letter-spacing: 0.06em;
  color: #D4A843;
  text-transform: uppercase;
  margin: 0 0 0.5rem;
  line-height: 1.1;
}
.page-news__subtitle {
  font-size: 1.05rem;
  color: #B0B8C4;
  margin: 0;
  max-width: 640px;
  line-height: 1.6;
}

/* ===== 区块通用 ===== */
.news-section {
  margin-bottom: var(--news-gap);
  scroll-margin-top: 2rem;
}
.section__header {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  margin-bottom: 1.75rem;
  border-bottom: 2px solid rgba(212,168,67,0.25);
  padding-bottom: 0.6rem;
}
.section__num {
  font-family: "JetBrains Mono", monospace;
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--num-color);
  line-height: 1;
  letter-spacing: -0.03em;
}
.section__heading {
  font-family: "Noto Sans SC", sans-serif;
  font-weight: 700;
  font-style: italic;
  font-size: 1.75rem;
  color: #FFFFFF;
  margin: 0;
  letter-spacing: 0.04em;
}

/* ===== 卡片基础 ===== */
.page-news .card {
  background-color: #1A2A4A;
  border: var(--card-border-w) solid #D4A843;
  box-shadow: var(--card-shadow);
  display: flex;
  flex-direction: column;
  border-radius: var(--card-radius);
  overflow: hidden;
  transition: box-shadow 0.25s ease, border-color 0.25s ease;
}
.page-news .card:hover {
  box-shadow: var(--card-shadow-hover);
}
.page-news .card:focus-within {
  border-color: #00D4FF;
  box-shadow: 8px 8px 0 rgba(0,212,255,0.25);
}

/* 图片容器 */
.card__image-wrap {
  overflow: hidden;
  flex-shrink: 0;
  background-color: #0F2644;
}
.card__img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  transition: transform 0.3s ease;
}
.card:hover .card__img {
  transform: scale(1.02);
}

/* 正文区 */
.card__body {
  padding: 1.5rem 1.5rem 1.8rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  flex: 1;
}
.card__tag {
  display: inline-block;
  font-family: "JetBrains Mono", monospace;
  font-size: 0.7rem;
  font-weight: 500;
  color: #00D4FF;
  background: var(--tag-bg);
  border: 1px solid var(--tag-border);
  border-radius: 100px;
  padding: 0.2rem 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  width: fit-content;
}
.card__title {
  font-family: "Noto Sans SC", sans-serif;
  font-weight: 700;
  font-size: 1.35rem;
  color: #FFFFFF;
  margin: 0;
  line-height: 1.3;
}
.card__title--sm {
  font-size: 1.2rem;
}
.card__summary {
  font-size: 0.95rem;
  color: #B0B8C4;
  margin: 0;
  line-height: 1.7;
  max-width: 580px;
}
.card__footnote {
  font-size: 0.82rem;
  color: #8892A0;
  margin: 0.4rem 0 0;
  line-height: 1.5;
}

/* 展开详情 (details/summary) */
.card__details {
  margin-top: 0.2rem;
  border-top: 1px solid rgba(212,168,67,0.2);
  padding-top: 0.6rem;
}
.card__details-summary {
  cursor: pointer;
  font-family: "Noto Sans SC", sans-serif;
  font-weight: 600;
  font-size: 0.88rem;
  color: #D4A843;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  transition: color 0.2s;
  user-select: none;
}
.card__details-summary::-webkit-details-marker {
  display: none;
}
.card__details-summary::before {
  content: "+";
  display: inline-block;
  font-family: "JetBrains Mono", monospace;
  font-weight: 700;
  font-size: 1.1rem;
  line-height: 1;
  color: #D4A843;
  transition: transform 0.25s ease;
}
.card__details[open] .card__details-summary::before {
  content: "−";
  transform: rotate(0deg);
}
.card__details-summary:hover,
.card__details-summary:focus-visible {
  color: #00D4FF;
  outline: none;
}
.card__details-summary:hover::before,
.card__details-summary:focus-visible::before {
  color: #00D4FF;
}
.card__details-content {
  padding: 0.75rem 0 0.2rem;
  color: #B0B8C4;
  font-size: 0.9rem;
  line-height: 1.7;
}
.card__details-content p {
  margin: 0 0 0.75rem;
}
.card__details-content p:last-child {
  margin-bottom: 0;
}

/* ===== 功能更新卡片 ===== */
.card--feature .card__image-wrap--left {
  order: -1;
}

/* ===== 数据调整记录卡片（含时间轴） ===== */
.card--timeline .card__body {
  gap: 0.8rem;
}
.timeline {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  padding: 0.5rem 0 0.2rem 0.8rem;
  border-left: 3px solid var(--timeline-line);
  margin: 0.2rem 0 0.2rem 0.4rem;
}
.timeline__item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  position: relative;
}
.timeline__dot {
  flex: 0 0 12px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--timeline-dot);
  margin-top: 0.35rem;
  box-shadow: 0 0 0 3px rgba(212,168,67,0.2);
  transition: background 0.2s, box-shadow 0.2s;
}
.timeline__item:hover .timeline__dot,
.timeline__item:focus-within .timeline__dot {
  background: #00D4FF;
  box-shadow: 0 0 0 3px rgba(0,212,255,0.35);
}
.timeline__content {
  flex: 1;
}
.timeline__label {
  font-family: "JetBrains Mono", monospace;
  font-weight: 600;
  font-size: 0.82rem;
  color: #D4A843;
  letter-spacing: 0.03em;
}
.timeline__desc {
  font-size: 0.88rem;
  color: #B0B8C4;
  margin: 0.15rem 0 0;
  line-height: 1.6;
}

/* ===== 行业观察卡片 ===== */
.card--insight .card__image-wrap--left {
  order: -1;
}

/* ===== 使用指南卡片 ===== */
.guide-steps {
  list-style: none;
  margin: 0.6rem 0 0.2rem;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.guide-steps__item {
  display: flex;
  align-items: flex-start;
  gap: 0.9rem;
}
.guide-steps__num {
  flex: 0 0 36px;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: #D4A843;
  color: #0A1F3F;
  font-family: "JetBrains Mono", monospace;
  font-weight: 700;
  font-size: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
  margin-top: 0.1rem;
  box-shadow: 3px 3px 0 rgba(0,0,0,0.3);
  transition: background 0.2s, box-shadow 0.2s;
}
.guide-steps__item:hover .guide-steps__num,
.guide-steps__item:focus-within .guide-steps__num {
  background: #00D4FF;
  box-shadow: 3px 3px 0 rgba(0,212,255,0.3);
}
.guide-steps__text {
  flex: 1;
}
.guide-steps__text strong {
  display: block;
  font-family: "Noto Sans SC", sans-serif;
  font-weight: 700;
  font-size: 1rem;
  color: #FFFFFF;
  margin-bottom: 0.15rem;
}
.guide-steps__text p {
  margin: 0;
  font-size: 0.88rem;
  color: #B0B8C4;
  line-height: 1.6;
}

/* ===== 站内链接样式 ===== */
.section-link {
  color: #00D4FF;
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
  text-decoration-color: rgba(0,212,255,0.4);
  transition: color 0.2s, text-decoration-color 0.2s;
}
.section-link:hover,
.section-link:focus-visible {
  color: #D4A843;
  text-decoration-color: #D4A843;
  outline: none;
}

/* ===== 信任声明 ===== */
.page-news__trust {
  margin-top: 1.5rem;
  padding: 1.2rem 1.5rem;
  border-left: 4px solid #D4A843;
  background: rgba(212,168,67,0.06);
  border-radius: 0 4px 4px 0;
}
.trust-text {
  margin: 0;
  font-size: 0.88rem;
  color: #B0B8C4;
  line-height: 1.7;
  letter-spacing: 0.02em;
}

/* ===== 桌面端布局 (≥768px) ===== */
@media (min-width: 768px) {
  .page-news .container {
    padding: 2.5rem 2.5rem 4rem;
  }
  .page-news__title {
    font-size: 3.6rem;
  }
  .page-news__subtitle {
    font-size: 1.1rem;
  }
  .section__heading {
    font-size: 2rem;
  }
  .section__num {
    font-size: 1.9rem;
  }
  .news-section {
    margin-bottom: 5rem;
  }

  /* 卡片水平非对称布局 */
  .page-news .card {
    flex-direction: row;
    align-items: stretch;
  }
  .card__image-wrap {
    flex: 0 0 42%;
    max-width: 42%;
    min-height: 240px;
  }
  .card__image-wrap--left {
    order: -1;
  }
  .card__image-wrap--right {
    order: 1;
  }
  .card__body {
    flex: 1;
    padding: 1.8rem 2rem 2rem;
  }
  .card__title {
    font-size: 1.5rem;
  }
  .card__title--sm {
    font-size: 1.3rem;
  }

  /* 功能更新 & 行业观察：图片左，文字右（默认左） */
  .card--feature .card__image-wrap--left {
    order: -1;
  }
  .card--insight .card__image-wrap--left {
    order: -1;
  }

  /* 数据调整记录 & 使用指南：图片右 */
  .card--timeline .card__image-wrap--right {
    order: 1;
  }
  .card--guide .card__image-wrap--right {
    order: 1;
  }

  /* 时间轴增加水平交互感 */
  .timeline {
    padding-left: 1.2rem;
    margin-left: 0.6rem;
  }
  .timeline__dot {
    width: 14px;
    height: 14px;
    flex: 0 0 14px;
  }

  /* 指南步骤更紧凑 */
  .guide-steps {
    gap: 1.2rem;
  }
  .guide-steps__num {
    width: 40px;
    height: 40px;
    flex: 0 0 40px;
    font-size: 1.1rem;
  }
}

/* ===== 大桌面端 (≥1024px) ===== */
@media (min-width: 1024px) {
  .page-news .container {
    padding: 3rem 3.5rem 5rem;
  }
  .page-news__title {
    font-size: 4.2rem;
  }
  .card__image-wrap {
    flex: 0 0 44%;
    max-width: 44%;
  }
  .card__body {
    padding: 2.2rem 2.5rem 2.5rem;
  }
  .card__title {
    font-size: 1.7rem;
  }
  .card__title--sm {
    font-size: 1.4rem;
  }
  .timeline {
    gap: 1rem;
  }
  .timeline__desc {
    font-size: 0.92rem;
  }
  .guide-steps__text p {
    font-size: 0.92rem;
  }
}

/* ===== 确保窄屏不横向溢出 ===== */
@media (max-width: 400px) {
  .page-news .container {
    padding-left: 0.8rem;
    padding-right: 0.8rem;
  }
  .page-news__title {
    font-size: 2rem;
  }
  .section__heading {
    font-size: 1.35rem;
  }
  .card__body {
    padding: 1rem 1rem 1.4rem;
  }
  .card__title {
    font-size: 1.1rem;
  }
  .timeline {
    padding-left: 0.4rem;
  }
  .guide-steps__num {
    width: 30px;
    height: 30px;
    flex: 0 0 30px;
    font-size: 0.85rem;
  }
}

/* ===== 焦点与键盘导航 ===== */
.page-news *:focus-visible {
  outline: 2px solid #00D4FF;
  outline-offset: 3px;
}
.page-news .card:focus-within {
  outline: none;
}