/* ===== 悦盈赛场 · 品牌动态 专属样式 ===== */
.page-news {
  --color-primary: #E63946;
  --color-primary-light: #FF6B6B;
  --color-dark: #1D1D2A;
  --color-dark-card: #2C2C3A;
  --color-accent: #00FF88;
  --color-white: #FFFFFF;
  --color-light-gray: #F0F0F0;
  --color-medium-gray: #888888;
  --color-border: rgba(255,255,255,0.08);
  --font-heading: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  --font-mono: "JetBrains Mono", "SF Mono", "Fira Code", "Consolas", "Courier New", monospace;
  --radius-sm: 4px;
  --radius-md: 8px;
  --shadow-card: 0 2px 8px rgba(0,0,0,0.08);
  --shadow-hover: 0 8px 24px rgba(0,0,0,0.12);
  --transition-fast: 0.2s ease;
  --transition-smooth: 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.page-news,
.page-news *,
.page-news *::before,
.page-news *::after {
  box-sizing: border-box;
}

/* ===== 页面容器 ===== */
.page-news__shell {
  max-width: var(--max-width, 1200px);
  margin: 0 auto;
  padding: 0 20px 60px;
}

/* ===== 顶部标识区 ===== */
.page-news__mast {
  padding: 48px 0 32px;
  position: relative;
}

.page-news__mast-inner {
  position: relative;
}

.page-news__mast-bread {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--color-medium-gray);
  text-transform: uppercase;
  margin-bottom: 12px;
}

.page-news__mast-head {
  display: flex;
  align-items: baseline;
  gap: 12px;
}

.page-news__mast-number {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 72px;
  line-height: 1;
  color: var(--color-primary);
  letter-spacing: -0.04em;
  flex-shrink: 0;
}

.page-news__mast-title {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 36px;
  line-height: 1.1;
  color: var(--color-white);
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.page-news__mast-desc {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--color-medium-gray);
  margin: 8px 0 16px;
  letter-spacing: 0.06em;
}

.page-news__skew {
  margin-top: 12px;
  width: 80px;
  height: 4px;
  background: var(--color-primary);
  clip-path: polygon(0 0, 100% 0, 90% 100%, 0 100%);
}

/* ===== 章节通用 ===== */
.page-news__section {
  margin-top: 56px;
  position: relative;
}

.page-news__section-head {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin-bottom: 24px;
  position: relative;
  padding-left: 0;
}

.page-news__section-number {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 28px;
  line-height: 1;
  color: var(--color-primary);
  letter-spacing: -0.02em;
  flex-shrink: 0;
}

.page-news__section-title {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 22px;
  color: var(--color-white);
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.page-news__section-label {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-medium-gray);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-left: auto;
  opacity: 0.6;
}

/* ===== 时间轴包装器 ===== */
.page-news__timeline-wrap {
  position: relative;
}

/* 时间轴轨道 — 移动端用左侧边框模拟 */
.page-news__timeline-rail {
  display: none;
}

/* ===== Bento 网格 ===== */
.page-news__grid {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* ===== 文章卡片 ===== */
.news-card {
  background: var(--color-dark-card);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-smooth), box-shadow var(--transition-smooth);
  border: 1px solid var(--color-border);
}

.news-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.news-card__index {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  color: var(--color-primary);
  letter-spacing: 0.1em;
  padding: 12px 16px 0;
  text-transform: uppercase;
}

.news-card__media {
  width: 100%;
  overflow: hidden;
  position: relative;
}

.news-card__media--square {
  aspect-ratio: 1 / 1;
  max-height: 200px;
}

.news-card__media--thumb {
  aspect-ratio: 1 / 1;
  max-height: 160px;
}

.news-card__img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  transition: transform var(--transition-smooth);
}

.news-card:hover .news-card__img {
  transform: scale(1.03);
}

.news-card__body {
  padding: 12px 16px 20px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.news-card__title {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 18px;
  color: var(--color-white);
  margin: 6px 0 4px;
  line-height: 1.2;
  letter-spacing: 0.02em;
}

.news-card__excerpt {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--color-light-gray);
  line-height: 1.5;
  margin: 4px 0 0;
  flex: 1;
}

/* 摘要 — 默认折叠，hover 展开 */
.news-card__summary {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--color-medium-gray);
  line-height: 1.5;
  margin-top: 8px;
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-smooth), opacity var(--transition-smooth), margin var(--transition-smooth);
  opacity: 0;
}

.news-card[data-expand]:hover .news-card__summary,
.news-card[data-expand]:focus-within .news-card__summary {
  max-height: 160px;
  opacity: 1;
  margin-top: 10px;
}

.news-card__link {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: color var(--transition-fast);
}

.news-card__link:hover {
  color: var(--color-primary-light);
}

/* 特色卡片 — 功能更新第一条 */
.news-card--featured {
  border-left: 3px solid var(--color-primary);
}

.news-card--featured .news-card__title {
  font-size: 20px;
}

/* 公告卡片 */
.news-card--notice {
  border-left: 3px solid var(--color-accent);
}

.news-card--notice .news-card__index {
  color: var(--color-accent);
}

/* 洞察卡片 */
.news-card--insight {
  border-left: 3px solid var(--color-primary-light);
}

.news-card--insight .news-card__index {
  color: var(--color-primary-light);
}

/* ===== 底部装饰 ===== */
.page-news__deco {
  margin-top: 56px;
  width: 100%;
  overflow: hidden;
  border-radius: var(--radius-sm);
  opacity: 0.7;
}

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

/* ===== 桌面端 ≥768px ===== */
@media (min-width: 768px) {
  .page-news__shell {
    padding: 0 32px 80px;
  }

  .page-news__mast {
    padding: 56px 0 40px;
  }

  .page-news__mast-number {
    font-size: 96px;
  }

  .page-news__mast-title {
    font-size: 48px;
  }

  .page-news__mast-desc {
    font-size: 14px;
  }

  .page-news__section {
    margin-top: 72px;
  }

  .page-news__section-head {
    margin-bottom: 32px;
  }

  .page-news__section-number {
    font-size: 36px;
  }

  .page-news__section-title {
    font-size: 28px;
  }

  /* 启用时间轴轨道 */
  .page-news__timeline-rail {
    display: block;
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 28px;
    pointer-events: none;
    z-index: 1;
  }

  .page-news__rail-line {
    position: absolute;
    left: 13px;
    top: 8px;
    bottom: 8px;
    width: 2px;
    background: linear-gradient(to bottom, var(--color-primary), var(--color-accent));
    border-radius: 1px;
    opacity: 0.35;
  }

  .page-news__rail-dot {
    position: absolute;
    left: 8px;
    width: 12px;
    height: 12px;
    background: var(--color-primary);
    border: 2px solid var(--color-dark);
    border-radius: 50%;
    transform: translateY(-50%);
    box-shadow: 0 0 0 2px rgba(230, 57, 70, 0.25);
  }

  /* Bento 网格 — 桌面 */
  .page-news__grid {
    display: grid;
    gap: 20px;
  }

  /* 功能更新网格 — 非对称三列 */
  .page-news__grid--features {
    grid-template-columns: 1fr 1fr;
    grid-auto-rows: auto;
  }

  .page-news__grid--features .news-card:first-child {
    grid-column: 1 / 2;
    grid-row: 1 / 3;
  }

  .page-news__grid--features .news-card:nth-child(2) {
    grid-column: 2 / 3;
    grid-row: 1 / 2;
  }

  .page-news__grid--features .news-card:nth-child(3) {
    grid-column: 2 / 3;
    grid-row: 2 / 3;
  }

  /* 品牌公告网格 — 两列 */
  .page-news__grid--announcements {
    grid-template-columns: 1fr 1fr;
  }

  .page-news__grid--announcements .news-card:first-child {
    grid-column: 1 / 2;
  }

  .page-news__grid--announcements .news-card:nth-child(2) {
    grid-column: 2 / 3;
  }

  /* 行业观察网格 — 三列 */
  .page-news__grid--insights {
    grid-template-columns: 1fr 1fr 1fr;
  }

  .page-news__grid--insights .news-card:first-child {
    grid-column: 1 / 3;
    display: grid;
    grid-template-columns: 200px 1fr;
    align-items: start;
  }

  .page-news__grid--insights .news-card:first-child .news-card__media {
    height: 100%;
  }

  .page-news__grid--insights .news-card:first-child .news-card__body {
    padding-top: 16px;
  }

  /* 卡片布局微调 */
  .news-card {
    flex-direction: column;
  }

  .news-card--featured .news-card__media {
    max-height: 260px;
  }

  .news-card__index {
    padding: 14px 20px 0;
  }

  .news-card__body {
    padding: 14px 20px 22px;
  }

  .news-card__title {
    font-size: 20px;
  }

  .news-card--featured .news-card__title {
    font-size: 24px;
  }

  .news-card__summary {
    font-size: 14px;
  }

  /* 时间轴 + 网格偏移 */
  .page-news__timeline-wrap {
    padding-left: 40px;
  }

  .page-news__timeline-rail {
    left: 0;
  }

  .page-news__deco {
    margin-top: 72px;
  }
}

/* ===== 大桌面 ≥1024px ===== */
@media (min-width: 1024px) {
  .page-news__shell {
    padding: 0 40px 100px;
  }

  .page-news__mast-number {
    font-size: 120px;
  }

  .page-news__mast-title {
    font-size: 56px;
  }

  .page-news__section-number {
    font-size: 42px;
  }

  .page-news__section-title {
    font-size: 32px;
  }

  .page-news__grid--features {
    gap: 24px;
  }

  .page-news__grid--features .news-card:first-child {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: start;
  }

  .page-news__grid--features .news-card:first-child .news-card__media {
    height: 100%;
    max-height: none;
  }

  .page-news__grid--features .news-card:first-child .news-card__body {
    padding-top: 20px;
  }

  .page-news__grid--announcements {
    gap: 24px;
  }

  .page-news__grid--insights {
    gap: 24px;
  }

  .page-news__grid--insights .news-card:first-child {
    grid-template-columns: 240px 1fr;
  }
}