/**
 * 首页新闻时间轴
 * - 台式（≥1025px）：横向轨道，五条均分，卡片上下交错
 * - 平板（768–1024px）：横向轨道，卡片横向滑动
 * - 手机（≤767px）：竖向轨道，卡片左右交错
 */

.home-news {
  --news-accent: #fdbbdb;
  --news-accent-deep: #f0a8c4;
  --news-accent-text: #a85878;
  --news-accent-muted: #c97a96;
  --timeline-axis-offset: 50%;
  --bp-tablet: 1024px;
  --bp-mobile: 767px;

  height: auto;
  min-height: 0;
  padding: 20px 0;
}

section.home-news {
  align-items: stretch;
}

.home-news .section-wrap.home-news-stage {
  display: block;
  position: relative;
  height: auto;
  min-height: 0;
  max-height: none;
  overflow: visible;
}

.home-news .news-timeline-panel,
.home-news .news-timeline-wrap,
.home-news .news-timeline {
  overflow: visible;
}

.home-news .news-title {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: #111;
  border-bottom: 1px solid rgba(255, 255, 255, 0.5);
  padding-bottom: 0.5rem;
  text-align: center;
}

.home-news .home-news-board-bar {
  margin-bottom: 1rem;
}

/* ---------- 时间轴容器 ---------- */
.home-news .news-timeline-wrap {
  position: relative;
  width: 100%;
  max-width: none;
  margin: 2rem 0 0;
  padding: 0.5rem 0 1.5rem;
  box-sizing: border-box;
}

.home-news .news-timeline-panel {
  contain: layout style;
}

.home-news .news-timeline {
  position: relative;
  min-height: 13.5rem;
  height: auto;
  padding: 0.5rem 0 0;
}

/* ---------- 横向轨道（台式 + 平板） ---------- */
.home-news .news-timeline-rail {
  position: absolute;
  left: 1.25rem;
  right: 1.25rem;
  top: var(--timeline-axis-offset);
  transform: translateY(-50%);
  height: 3px;
  width: auto;
  pointer-events: none;
  z-index: 0;
}

.home-news .news-timeline-line {
  display: block;
  width: 100%;
  height: 100%;
  border-radius: 999px;
  background: linear-gradient(
    90deg,
    rgba(253, 189, 219, 0.35) 0%,
    rgba(253, 189, 219, 0.75) 55%,
    rgba(240, 168, 196, 0.9) 100%
  );
  box-shadow: 0 0 10px rgba(253, 189, 219, 0.25);
}

.home-news .news-timeline-arrow {
  position: absolute;
  right: -0.35rem;
  top: 50%;
  transform: translateY(-50%);
  width: 1.5rem;
  height: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--news-accent-deep);
  font-size: 0.85rem;
  filter: drop-shadow(0 1px 3px rgba(253, 189, 219, 0.45));
}

.home-news .news-timeline-arrow .news-timeline-arrow-icon--down {
  display: none;
}

.home-news .news-timeline-items {
  list-style: none;
  margin: 0;
  padding: 0 0.5rem;
  display: flex;
  align-items: stretch;
  justify-content: space-between;
  gap: 0.65rem;
  position: relative;
  z-index: 1;
  min-height: 13.5rem;
}

.home-news .news-timeline-item {
  flex: 1 1 0;
  min-width: 0;
  max-width: 11.5rem;
  display: grid;
  grid-template-rows: 1fr auto 1fr;
  grid-template-columns: none;
  align-items: center;
  justify-items: center;
}

.home-news .news-timeline-node {
  grid-row: 2;
  grid-column: auto;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.85);
  border: 2px solid var(--news-accent-deep);
  box-shadow:
    0 0 0 3px rgba(253, 189, 219, 0.25),
    0 2px 8px rgba(253, 189, 219, 0.35);
  flex-shrink: 0;
  z-index: 2;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.home-news .news-timeline-item:nth-child(odd) .news-timeline-card {
  grid-row: 1;
  grid-column: auto;
  align-self: end;
  margin: 0 0 0.45rem;
}

.home-news .news-timeline-item:nth-child(even) .news-timeline-card {
  grid-row: 3;
  grid-column: auto;
  align-self: start;
  margin: 0.45rem 0 0;
}

.home-news .news-timeline-item:hover .news-timeline-node {
  transform: scale(1.15);
  box-shadow:
    0 0 0 4px rgba(253, 189, 219, 0.35),
    0 4px 12px rgba(253, 189, 219, 0.4);
}

.home-news .news-timeline-card {
  width: 100%;
  padding: 0.65rem 0.75rem;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.38);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.42);
  box-shadow: 0 6px 20px rgba(253, 189, 219, 0.12);
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.home-news .news-timeline-item:nth-child(odd):hover .news-timeline-card {
  transform: translateY(-4px);
  background: rgba(255, 255, 255, 0.52);
  box-shadow: 0 10px 28px rgba(253, 189, 219, 0.22);
}

.home-news .news-timeline-item:nth-child(even):hover .news-timeline-card {
  transform: translateY(4px);
  background: rgba(255, 255, 255, 0.52);
  box-shadow: 0 10px 28px rgba(253, 189, 219, 0.22);
}

.home-news .news-timeline-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35rem 0.5rem;
  margin-bottom: 0.35rem;
}

.home-news .news-timeline-date {
  font-size: 0.6875rem;
  font-weight: 700;
  color: var(--news-accent-muted);
  white-space: nowrap;
}

.home-news .news-timeline-board {
  font-size: 0.625rem;
  font-weight: 600;
  color: var(--news-accent-text);
  background: rgba(253, 189, 219, 0.22);
  padding: 0.1rem 0.35rem;
  border-radius: 3px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 100%;
}

.home-news .news-timeline-title {
  margin: 0;
  min-width: 0;
}

.home-news .news-timeline-link {
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
  overflow: hidden;
  font-size: 0.8125rem;
  font-weight: 600;
  line-height: 1.35;
  color: #222;
  text-decoration: none;
}

.home-news .news-timeline-link:hover {
  color: var(--news-accent-text);
}

.home-news .news-timeline-empty {
  margin: 0;
  text-align: center;
  color: #666;
  font-size: 0.9rem;
}

.home-news .news-timeline-item-empty {
  flex: 1 1 100%;
  max-width: none;
  grid-template-rows: auto;
  grid-template-columns: 1fr;
}

.home-news .news-timeline-item-empty .news-timeline-card {
  grid-row: 1;
  grid-column: 1;
  margin: 0;
}

.home-news .news-timeline-wrap::before {
  content: "";
  position: absolute;
  left: 5%;
  right: 5%;
  top: var(--timeline-axis-offset);
  transform: translateY(-50%);
  height: 70%;
  background: radial-gradient(
    ellipse 85% 100% at 50% 50%,
    rgba(253, 189, 219, 0.18) 0%,
    transparent 72%
  );
  pointer-events: none;
  z-index: 0;
}

/* ========== 平板（768px–1024px）：横向轨道 + 卡片横滑 ========== */
@media (max-width: 1024px) {
  .home-news .news-timeline-wrap {
    margin-top: 1.75rem;
  }

  .home-news .news-timeline {
    min-height: 12rem;
  }

  .home-news .news-timeline-items {
    justify-content: flex-start;
    flex-wrap: nowrap;
    gap: 0.75rem;
    min-height: 12rem;
    overflow-x: auto;
    overflow-y: visible;
    scroll-snap-type: x proximity;
    -webkit-overflow-scrolling: touch;
    padding: 0 0.5rem 0.5rem;
    scrollbar-width: thin;
    scrollbar-color: rgba(253, 189, 219, 0.5) transparent;
  }

  .home-news .news-timeline-items::-webkit-scrollbar {
    height: 5px;
  }

  .home-news .news-timeline-items::-webkit-scrollbar-thumb {
    background: rgba(253, 189, 219, 0.45);
    border-radius: 999px;
  }

  .home-news .news-timeline-item {
    flex: 0 0 auto;
    width: min(10.5rem, 38vw);
    max-width: 11rem;
    scroll-snap-align: center;
  }

  .home-news .news-timeline-rail {
    left: 0.75rem;
    right: 0.75rem;
  }
}

/* ========== 手机（≤767px）：竖向时间轴 ========== */
@media (max-width: 767px) {
  .home-news .news-timeline-wrap {
    margin-top: 1.5rem;
  }

  .home-news .news-timeline-wrap::before {
    left: 50%;
    right: auto;
    top: 4%;
    bottom: 4%;
    width: min(18rem, 72%);
    height: auto;
    transform: translateX(-50%);
    background: radial-gradient(
      ellipse 70% 90% at 50% 50%,
      rgba(253, 189, 219, 0.2) 0%,
      transparent 72%
    );
  }

  .home-news .news-timeline {
    min-height: 0;
    padding: 0.25rem 0 0.5rem;
  }

  .home-news .news-timeline-rail {
    left: 50%;
    right: auto;
    top: 0.35rem;
    bottom: 0.65rem;
    width: 3px;
    height: auto;
    transform: translateX(-50%);
  }

  .home-news .news-timeline-line {
    width: 100%;
    height: 100%;
    background: linear-gradient(
      180deg,
      rgba(253, 189, 219, 0.35) 0%,
      rgba(253, 189, 219, 0.75) 55%,
      rgba(240, 168, 196, 0.9) 100%
    );
  }

  .home-news .news-timeline-arrow {
    left: 50%;
    right: auto;
    top: auto;
    bottom: -0.6rem;
    transform: translateX(-50%);
  }

  .home-news .news-timeline-arrow .news-timeline-arrow-icon--right {
    display: none;
  }

  .home-news .news-timeline-arrow .news-timeline-arrow-icon--down {
    display: block;
  }

  .home-news .news-timeline-items {
    flex-direction: column;
    align-items: stretch;
    gap: 1.25rem;
    min-height: 0;
    padding: 0.35rem 0.5rem 1.25rem;
    overflow: visible;
    scroll-snap-type: none;
  }

  .home-news .news-timeline-item {
    flex: none;
    width: 100%;
    max-width: none;
    display: grid;
    grid-template-columns: minmax(0, 1fr) 12px minmax(0, 1fr);
    grid-template-rows: auto;
    column-gap: 0.55rem;
  }

  .home-news .news-timeline-node {
    grid-row: 1;
    grid-column: 2;
    justify-self: center;
  }

  .home-news .news-timeline-item:nth-child(odd) .news-timeline-card {
    grid-row: 1;
    grid-column: 3;
    align-self: center;
    margin: 0;
  }

  .home-news .news-timeline-item:nth-child(even) .news-timeline-card {
    grid-row: 1;
    grid-column: 1;
    align-self: center;
    margin: 0;
  }

  .home-news .news-timeline-item:nth-child(odd):hover .news-timeline-card {
    transform: translateX(4px);
  }

  .home-news .news-timeline-item:nth-child(even):hover .news-timeline-card {
    transform: translateX(-4px);
  }

  .home-news .news-timeline-item-empty {
    grid-template-columns: 1fr;
  }

  .home-news .news-timeline-card {
    padding: 0.6rem 0.65rem;
  }

  .home-news .news-timeline-link {
    font-size: 0.78rem;
  }
}