/* ===== 更新动态页 · page-news ===== */
.page-news {
  --page-silver: linear-gradient(135deg, #6B7280, #E5E7EB);
  --page-card-bg: rgba(17, 24, 39, 0.62);
  --page-glow-cyan: 0 0 14px rgba(0, 229, 255, 0.35);
  --page-glow-pink: 0 0 14px rgba(255, 62, 142, 0.3);
  --page-aside-w: 216px;
}

/* 面包屑 */
.page-news .breadcrumb {
  margin-bottom: 2rem;
  font-size: 0.85rem;
}

/* ===== 首屏头图 ===== */
.page-news .news-hero {
  position: relative;
  padding: 1.6rem 0 0;
  margin-bottom: 2.2rem;
}

.page-news .news-hero::before {
  content: "";
  display: block;
  width: 110px;
  height: 2px;
  margin-bottom: 1.1rem;
  background: var(--page-silver);
}

.page-news .news-hero h1 {
  font-size: clamp(1.8rem, 4.6vw, 2.5rem);
  line-height: 1.22;
  letter-spacing: -0.005em;
  max-width: 1000px;
  margin: 0.6rem 0 0.8rem;
  font-weight: 800;
}

.page-news .news-hero .intro {
  max-width: 720px;
  color: var(--text-dim);
  font-size: 1rem;
  line-height: 1.8;
  margin: 0 0 2rem;
}

.page-news .news-hero__visual {
  position: relative;
  overflow: hidden;
  border-radius: 16px;
  border: 1px solid var(--line);
  background: var(--bg-deep);
}

.page-news .news-hero__visual img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-news .news-hero__visual::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(0, 229, 255, 0.06) 0%, transparent 30%, transparent 75%, rgba(109, 40, 217, 0.18) 100%);
}

/* ===== 主体两栏布局 ===== */
.page-news .news-layout {
  display: grid;
  gap: 2rem;
  margin-top: 2.8rem;
}

/* ===== 侧栏时间轴 ===== */
.page-news .news-aside {
  display: none;
}

.page-news .news-timeline {
  display: flex;
  flex-direction: column;
  position: relative;
  gap: 1.35rem;
}

.page-news .news-timeline::before {
  content: "";
  position: absolute;
  top: 8px;
  bottom: 8px;
  left: 5px;
  width: 1px;
  background: linear-gradient(180deg, var(--accent), var(--line-strong) 28%, var(--line-strong) 70%, transparent);
}

.page-news .news-timeline__item {
  position: relative;
  padding-left: 1.4rem;
  display: flex;
  align-items: center;
  gap: 0.55rem;
  min-height: 1.6rem;
}

.page-news .news-timeline__dot {
  position: absolute;
  left: 0;
  top: 50%;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--bg-deep);
  border: 2px solid var(--text-dim);
  transform: translateY(-50%);
}

.page-news .news-timeline__item.is-live .news-timeline__dot {
  border-color: var(--accent);
  box-shadow: var(--page-glow-cyan);
}

.page-news .news-timeline__item.is-live .mono-label {
  color: var(--accent);
}

.page-news .news-timeline__item::after {
  content: attr(data-tip);
  position: absolute;
  left: 2.2rem;
  top: -0.35rem;
  white-space: nowrap;
  background: var(--bg-raised);
  border: 1px solid var(--line);
  padding: 0.3rem 0.6rem;
  font-size: 0.72rem;
  color: var(--text-dim);
  border-radius: 6px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
  z-index: 2;
}

.page-news .news-timeline__item:hover::after {
  opacity: 1;
}

/* ===== 主体信息流 ===== */
.page-news .news-main {
  min-width: 0;
}

.page-news .news-section {
  margin-bottom: 4rem;
}

.page-news .news-section__head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  padding-bottom: 0.9rem;
  margin-bottom: 1.6rem;
  border-bottom: 1px solid var(--line);
}

.page-news .news-section__head h2 {
  font-size: 1.55rem;
  margin: 0.4rem 0 0;
  font-weight: 750;
}

.page-news .news-section__head .mono-label {
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  color: var(--text-dim);
}

.page-news .section-note {
  color: var(--text-dim);
  font-size: 0.9rem;
  line-height: 1.7;
  margin: -0.6rem 0 1.3rem;
}

/* ===== 更新卡片流 ===== */
.page-news .news-feed {
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}

.page-news .news-card {
  position: relative;
  display: grid;
  grid-template-columns: 2.4rem minmax(0, 1fr);
  gap: 1rem;
  padding: 1.3rem 1.3rem 1.05rem;
  background: var(--page-card-bg);
  border: 1px solid var(--line);
  border-radius: 14px;
  transition: border-color 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease, background-color 0.3s ease;
}

.page-news .news-card::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 22px;
  height: 22px;
  clip-path: polygon(100% 0, 0 0, 100% 100%);
  background: var(--accent);
  opacity: 0.18;
  transition: opacity 0.3s ease;
}

.page-news .news-card__index {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-dim);
  padding-top: 0.35rem;
  letter-spacing: 0.08em;
}

.page-news .news-card__body {
  min-width: 0;
}

.page-news .news-card__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.8rem;
  margin-bottom: 0.55rem;
}

.page-news .news-card__meta time {
  font-size: 0.78rem;
  color: var(--text-dim);
  font-family: var(--font-mono);
}

.page-news .news-card h3 {
  margin: 0 0 0.5rem;
  font-size: 1.08rem;
  line-height: 1.45;
  font-weight: 700;
}

.page-news .news-card__body > p {
  margin: 0 0 0.8rem;
  color: var(--text-dim);
  font-size: 0.92rem;
  line-height: 1.75;
}

.page-news .news-card__foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  padding-top: 0.7rem;
  border-top: 1px dashed var(--line);
}

.page-news .news-card__foot .mono-label {
  font-size: 0.72rem;
  color: var(--text-dim);
}

.page-news .news-card__link {
  color: var(--accent);
  font-size: 0.85rem;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease, opacity 0.2s ease;
}

.page-news .news-card__link:hover {
  border-bottom-color: var(--accent);
  opacity: 0.85;
}

/* ===== 标签变体 ===== */
.page-news .tag {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.28rem 0.7rem;
  font-size: 0.76rem;
  font-weight: 500;
  border-radius: 999px;
  letter-spacing: 0.03em;
}

.page-news .tag-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: currentColor;
  box-shadow: 0 0 6px currentColor;
}

.page-news .tag--cyan {
  color: var(--accent);
  background: rgba(0, 229, 255, 0.08);
  border: 1px solid rgba(0, 229, 255, 0.22);
}

.page-news .tag--pink {
  color: var(--accent-2);
  background: rgba(255, 62, 142, 0.08);
  border: 1px solid rgba(255, 62, 142, 0.22);
}

.page-news .tag--blue {
  color: #93C5FD;
  background: rgba(59, 130, 246, 0.08);
  border: 1px solid rgba(59, 130, 246, 0.22);
}

.page-news .tag--silver {
  color: #D1D5DB;
  background: rgba(209, 213, 219, 0.08);
  border: 1px solid rgba(209, 213, 219, 0.2);
}

/* ===== 版本归档 ===== */
.page-news .version-archive {
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(11, 12, 16, 0.3);
  overflow: hidden;
}

.page-news .version-row {
  display: grid;
  grid-template-columns: auto auto minmax(0, 1fr);
  align-items: center;
  gap: 0.4rem 0.9rem;
  padding: 0.9rem 1.1rem;
  border-bottom: 1px solid var(--line);
  transition: background 0.2s ease;
}

.page-news .version-row:last-child {
  border-bottom: 0;
}

.page-news .version-row:hover {
  background: rgba(255, 255, 255, 0.025);
}

.page-news .version-row__mark {
  color: var(--text-dim);
  font-size: 0.8rem;
}

.page-news .version-row__num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.92rem;
  white-space: nowrap;
}

.page-news .version-row__desc {
  color: var(--text-dim);
  font-size: 0.85rem;
  min-width: 0;
  overflow-wrap: break-word;
}

.page-news .version-row__date {
  grid-column: 1 / -1;
  font-size: 0.76rem;
  color: var(--text-dim);
  opacity: 0.75;
}

.page-news .version-row--current {
  background: linear-gradient(90deg, rgba(0, 229, 255, 0.07), transparent 70%);
  border-left: 3px solid var(--accent);
}

.page-news .version-row--current .version-row__mark {
  color: var(--accent);
  text-shadow: var(--page-glow-cyan);
}

/* ===== 专题合集 ===== */
.page-news .topic-grid {
  display: grid;
  gap: 1.2rem;
}

.page-news .topic-card {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--line);
  border-radius: 14px;
  overflow: hidden;
  background: var(--bg-panel);
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.page-news .topic-card__visual {
  position: relative;
  overflow: hidden;
  aspect-ratio: 3 / 2;
  background: var(--bg-deep);
}

.page-news .topic-card__visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.page-news .topic-card__visual::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 45%, rgba(11, 12, 16, 0.4) 100%);
  pointer-events: none;
}

.page-news .topic-card__body {
  padding: 1rem 1.1rem 1.05rem;
}

.page-news .topic-card__body .chip {
  margin-bottom: 0.7rem;
}

.page-news .topic-card__body h3 {
  margin: 0 0 0.4rem;
  font-size: 1.02rem;
  line-height: 1.4;
  font-weight: 700;
}

.page-news .topic-card__body p {
  margin: 0;
  color: var(--text-dim);
  font-size: 0.87rem;
  line-height: 1.65;
}

/* ===== 量化面板 ===== */
.page-news .metrics-panel {
  display: grid;
  gap: 1.4rem;
  padding: 1.4rem;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: linear-gradient(135deg, rgba(30, 58, 138, 0.16), rgba(109, 40, 217, 0.1));
}

.page-news .metrics-panel__chart {
  border: 1px solid var(--line);
  border-radius: 12px;
  overflow: hidden;
  background: var(--bg-deep);
}

.page-news .metrics-panel__chart img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}

.page-news .metrics-panel__stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.9rem;
}

.page-news .stat-block {
  padding: 1rem 1.05rem;
  background: rgba(11, 12, 16, 0.4);
  border: 1px solid var(--line);
  border-radius: 12px;
}

.page-news .stat-num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(1.3rem, 3vw, 1.7rem);
  font-weight: 700;
  color: var(--accent);
  line-height: 1.2;
  margin-bottom: 0.25rem;
}

.page-news .stat-label {
  display: block;
  font-size: 0.82rem;
  color: var(--text-dim);
}

/* ===== 底部相关链接 ===== */
.page-news .news-cta {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.8rem;
  margin-top: 1.8rem;
  padding-top: 2rem;
  border-top: 1px solid var(--line);
}

.page-news .news-cta__link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  padding: 1rem 1.1rem;
  border: 1px solid var(--line);
  border-radius: 12px;
  text-decoration: none;
  color: var(--text);
  font-size: 0.92rem;
  transition: border-color 0.25s ease, background-color 0.25s ease;
}

.page-news .news-cta__link:hover {
  border-color: var(--accent);
  background: rgba(0, 229, 255, 0.05);
}

.page-news .news-cta__arrow {
  color: var(--accent);
  font-size: 1.05rem;
  transition: transform 0.25s ease;
}

.page-news .news-cta__link:hover .news-cta__arrow {
  transform: translateX(3px);
}

/* ===== 悬停与动效增强 ===== */
@media (hover: hover) and (prefers-reduced-motion: no-preference) {
  .page-news .news-card:hover {
    transform: translateY(-3px);
    border-color: var(--line-strong);
    box-shadow: var(--shadow);
    background: rgba(17, 24, 39, 0.78);
  }

  .page-news .news-card:hover::before {
    opacity: 0.45;
  }

  .page-news .topic-card:hover {
    transform: translateY(-4px);
    border-color: var(--line-strong);
    box-shadow: var(--shadow);
  }
}

/* ===== 响应式布局 ===== */
@media (min-width: 640px) {
  .page-news .version-row {
    grid-template-columns: auto auto minmax(0, 1fr) auto;
  }

  .page-news .version-row__date {
    grid-column: auto;
  }

  .page-news .metrics-panel {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
    align-items: center;
    padding: 1.6rem;
  }

  .page-news .news-cta {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 720px) {
  .page-news .topic-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1rem;
  }
}

@media (min-width: 992px) {
  .page-news .news-layout {
    grid-template-columns: var(--page-aside-w) minmax(0, 1fr);
    align-items: start;
    gap: 3.2rem;
    margin-top: 3.4rem;
  }

  .page-news .news-aside {
    display: block;
    position: sticky;
    top: calc(var(--strip-h) + var(--nav-h) + 1.25rem);
    border-right: 1px solid var(--line);
    padding: 0.5rem 1.4rem 0.5rem 0;
  }

  .page-news .news-cta {
    grid-template-columns: repeat(4, 1fr);
  }
}