/* ===== 页面专属：内容专栏 ===== */
.page-news {
  --news-track-width: 72px;
  --news-card-radius: 4px;
  --news-card-shadow: 0 4px 20px rgba(0, 0, 0, 0.45);
  --news-card-border: 1px solid rgba(255, 215, 0, 0.25);
  --news-transition: 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --news-gap: 20px;
  --news-col-gap: 20px;

  display: flex;
  flex-direction: row;
  max-width: var(--max-width, 1280px);
  margin: 0 auto;
  padding: 0 var(--gap, 24px);
  min-height: 70vh;
  position: relative;
}

/* ---- 左侧品牌轨道 ---- */
.page-news__brand-track {
  flex: 0 0 var(--news-track-width);
  max-width: var(--news-track-width);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  padding: 48px 0 24px;
  position: relative;
  z-index: 2;
}

.page-news__track-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  position: sticky;
  top: 90px;
}

.page-news__track-logo {
  writing-mode: vertical-rl;
  font-family: var(--font-heading, 'Montserrat Black', 'Helvetica Neue', Arial, sans-serif);
  font-size: 1.1rem;
  font-weight: 900;
  color: var(--color-gold, #FFD700);
  letter-spacing: 0.15em;
  text-orientation: mixed;
}

.page-news__track-label {
  writing-mode: vertical-rl;
  font-family: var(--font-body, 'Open Sans', 'Noto Sans SC', sans-serif);
  font-size: 0.7rem;
  color: var(--color-gray-light, #B0B0B0);
  letter-spacing: 0.3em;
  text-orientation: mixed;
  opacity: 0.8;
}

.page-news__track-line {
  display: block;
  width: 2px;
  height: 60px;
  background: linear-gradient(to bottom, var(--color-gold, #FFD700), transparent);
}

.page-news__track-deco {
  display: block;
  width: 40px;
  height: auto;
  opacity: 0.35;
  transform: rotate(90deg);
  margin-top: 8px;
}

/* ---- 右侧主内容 ---- */
.page-news__content {
  flex: 1;
  min-width: 0;
  padding: 32px 0 48px 32px;
  position: relative;
}

/* 面包屑 */
.page-news__breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  font-family: var(--font-body, 'Open Sans', 'Noto Sans SC', sans-serif);
  margin-bottom: 12px;
  color: var(--color-gray-light, #B0B0B0);
}

.page-news__breadcrumb-link {
  color: var(--color-gold-dark, #DAA520);
  text-decoration: none;
  transition: color var(--news-transition);
}

.page-news__breadcrumb-link:hover,
.page-news__breadcrumb-link:focus-visible {
  color: var(--color-gold, #FFD700);
  text-decoration: underline;
}

.page-news__breadcrumb-sep {
  color: var(--color-gray-mid, #6B6B6B);
}

.page-news__breadcrumb-current {
  color: var(--color-white, #FFFFFF);
  font-weight: 500;
}

/* 页面标题 */
.page-news__heading {
  font-family: var(--font-heading, 'Montserrat Black', 'Helvetica Neue', Arial, sans-serif);
  font-size: 2.6rem;
  font-weight: 900;
  color: var(--color-gold, #FFD700);
  margin: 0 0 4px;
  line-height: 1.15;
  letter-spacing: -0.01em;
}

.page-news__subheading {
  font-family: var(--font-body, 'Open Sans', 'Noto Sans SC', sans-serif);
  font-size: 0.95rem;
  color: var(--color-gray-light, #B0B0B0);
  margin: 0 0 28px;
  max-width: 560px;
  line-height: 1.5;
}

/* ---- 分类筛选（radio 隐藏） ---- */
.page-news__filter {
  display: none;
}

.page-news__radio {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ---- 分类标签（水平滑动） ---- */
.page-news__tabs {
  display: flex;
  flex-direction: row;
  gap: 10px;
  overflow-x: auto;
  overflow-y: hidden;
  scroll-behavior: smooth;
  -webkit-overflow-scrolling: touch;
  padding: 4px 0 16px;
  margin-bottom: 8px;
  scrollbar-width: thin;
  scrollbar-color: var(--color-gold-dark, #DAA520) transparent;
  white-space: nowrap;
}

.page-news__tabs::-webkit-scrollbar {
  height: 4px;
}

.page-news__tabs::-webkit-scrollbar-thumb {
  background: var(--color-gold-dark, #DAA520);
  border-radius: 4px;
}

.page-news__tabs::-webkit-scrollbar-track {
  background: transparent;
}

.page-news__tab {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  font-family: var(--font-body, 'Open Sans', 'Noto Sans SC', sans-serif);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-white, #FFFFFF);
  background: transparent;
  border: 1px solid var(--color-gray-mid, #6B6B6B);
  border-radius: var(--radius, 4px);
  cursor: pointer;
  transition: background var(--news-transition), border-color var(--news-transition), color var(--news-transition);
  user-select: none;
  flex-shrink: 0;
  position: relative;
}

.page-news__tab::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--color-gold, #FFD700);
  transition: width var(--news-transition), left var(--news-transition);
}

.page-news__tab:hover::after,
.page-news__tab:focus-visible::after {
  width: 80%;
  left: 10%;
}

.page-news__tab:hover,
.page-news__tab:focus-visible {
  background: rgba(139, 0, 0, 0.35);
  border-color: var(--color-gold-dark, #DAA520);
}

.page-news__tab-icon {
  width: 20px;
  height: 20px;
  object-fit: contain;
  flex-shrink: 0;
  border-radius: 2px;
}

.page-news__tab-icon--empty {
  display: inline-block;
  width: 20px;
  height: 20px;
  background: var(--color-gray-mid, #6B6B6B);
  border-radius: 2px;
}

/* radio 选中时对应 tab 高亮 */
#news-cat-all:checked ~ .page-news__tabs label[for="news-cat-all"],
#news-cat-updates:checked ~ .page-news__tabs label[for="news-cat-updates"],
#news-cat-tips:checked ~ .page-news__tabs label[for="news-cat-tips"],
#news-cat-data:checked ~ .page-news__tabs label[for="news-cat-data"],
#news-cat-announce:checked ~ .page-news__tabs label[for="news-cat-announce"] {
  background: var(--color-crimson, #8B0000);
  border-color: var(--color-gold, #FFD700);
  color: var(--color-gold, #FFD700);
}

#news-cat-all:checked ~ .page-news__tabs label[for="news-cat-all"]::after,
#news-cat-updates:checked ~ .page-news__tabs label[for="news-cat-updates"]::after,
#news-cat-tips:checked ~ .page-news__tabs label[for="news-cat-tips"]::after,
#news-cat-data:checked ~ .page-news__tabs label[for="news-cat-data"]::after,
#news-cat-announce:checked ~ .page-news__tabs label[for="news-cat-announce"]::after {
  width: 80%;
  left: 10%;
}

/* ---- 瀑布流文章列表 ---- */
.page-news__articles {
  column-count: 2;
  column-gap: var(--news-col-gap);
  padding: 4px 0 12px;
}

/* 卡片 */
.page-news__card {
  break-inside: avoid;
  margin-bottom: var(--news-gap);
  background: var(--color-bg-darker, #1F1F1F);
  border: var(--news-card-border);
  border-radius: var(--news-card-radius);
  box-shadow: var(--news-card-shadow);
  padding: 0;
  overflow: hidden;
  transition: background var(--news-transition), box-shadow var(--news-transition), transform var(--news-transition);
  position: relative;
  display: flex;
  flex-direction: column;
}

.page-news__card:hover {
  background: var(--color-crimson, #8B0000);
  box-shadow: 0 6px 28px rgba(139, 0, 0, 0.35);
  transform: translateY(-2px);
}

/* 纸张叠层效果：每张卡片不同微偏移 */
.page-news__card:nth-child(2n) {
  transform: translateY(12px);
}
.page-news__card:nth-child(2n):hover {
  transform: translateY(10px);
}
.page-news__card:nth-child(3n) {
  transform: translateY(-6px);
}
.page-news__card:nth-child(3n):hover {
  transform: translateY(-8px);
}
.page-news__card:nth-child(5n) {
  transform: translateY(18px);
}
.page-news__card:nth-child(5n):hover {
  transform: translateY(16px);
}

/* 图片 */
.page-news__card-img-wrap {
  width: 100%;
  overflow: hidden;
  position: relative;
  border-bottom: 2px solid var(--color-gold-dark, #DAA520);
}

.page-news__card-img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  aspect-ratio: 400 / 150;
  transition: transform 0.4s ease;
}

.page-news__card:hover .page-news__card-img {
  transform: scale(1.03);
}

/* 分类标签 */
.page-news__card-tag {
  align-self: flex-start;
  margin: 12px 14px 4px;
  font-size: 0.7rem;
  letter-spacing: 0.05em;
  padding: 3px 12px;
  border-radius: 2px;
}

/* 标题 */
.page-news__card-title {
  font-family: var(--font-heading, 'Montserrat Black', 'Helvetica Neue', Arial, sans-serif);
  font-size: 1.1rem;
  font-weight: 900;
  color: var(--color-gold, #FFD700);
  margin: 4px 14px 6px;
  line-height: 1.3;
}

/* 摘要 */
.page-news__card-summary {
  font-family: var(--font-body, 'Open Sans', 'Noto Sans SC', sans-serif);
  font-size: 0.9rem;
  color: var(--color-white, #FFFFFF);
  line-height: 1.6;
  margin: 0 14px 12px;
  opacity: 0.92;
}

/* details 展开 */
.page-news__card-details {
  margin: 0 14px 14px;
  font-family: var(--font-body, 'Open Sans', 'Noto Sans SC', sans-serif);
}

.page-news__card-summary-btn {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-gold-dark, #DAA520);
  cursor: pointer;
  transition: color var(--news-transition);
  padding: 2px 0;
  border-bottom: 1px dashed var(--color-gold-dark, #DAA520);
  list-style: none;
}

.page-news__card-summary-btn::-webkit-details-marker {
  display: none;
}

.page-news__card-summary-btn::before {
  content: '▸ ';
  color: var(--color-gold, #FFD700);
}

.page-news__card-details[open] .page-news__card-summary-btn::before {
  content: '▾ ';
}

.page-news__card-summary-btn:hover,
.page-news__card-summary-btn:focus-visible {
  color: var(--color-gold, #FFD700);
}

.page-news__card-detail-body {
  margin-top: 10px;
  padding: 12px 14px;
  background: rgba(0, 0, 0, 0.25);
  border-left: 3px solid var(--color-gold-dark, #DAA520);
  border-radius: 0 var(--radius, 4px) var(--radius, 4px) 0;
  font-size: 0.85rem;
  color: var(--color-gray-light, #B0B0B0);
  line-height: 1.7;
}

.page-news__card-detail-body p {
  margin: 0 0 8px;
}

.page-news__card-detail-body p:last-child {
  margin-bottom: 0;
}

/* ---- 筛选逻辑（纯 CSS） ---- */
/* 默认全部显示 */
#news-cat-all:checked ~ .page-news__articles .page-news__card {
  display: flex;
}

/* 各分类筛选 */
#news-cat-updates:checked ~ .page-news__articles .page-news__card:not([data-category="updates"]),
#news-cat-tips:checked ~ .page-news__articles .page-news__card:not([data-category="tips"]),
#news-cat-data:checked ~ .page-news__articles .page-news__card:not([data-category="data"]),
#news-cat-announce:checked ~ .page-news__articles .page-news__card:not([data-category="announce"]) {
  display: none;
}

#news-cat-updates:checked ~ .page-news__articles .page-news__card[data-category="updates"],
#news-cat-tips:checked ~ .page-news__articles .page-news__card[data-category="tips"],
#news-cat-data:checked ~ .page-news__articles .page-news__card[data-category="data"],
#news-cat-announce:checked ~ .page-news__articles .page-news__card[data-category="announce"] {
  display: flex;
}

/* ---- 延伸阅读 ---- */
.page-news__extras {
  margin-top: 40px;
  padding: 24px 0 16px;
  border-top: 1px solid rgba(255, 215, 0, 0.2);
}

.page-news__extras-title {
  font-size: 1.4rem;
  margin-bottom: 16px;
}

.page-news__extras-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 12px 28px;
}

.page-news__extras-link {
  font-family: var(--font-body, 'Open Sans', 'Noto Sans SC', sans-serif);
  font-size: 0.9rem;
  color: var(--color-gray-light, #B0B0B0);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--news-transition), border-color var(--news-transition);
  position: relative;
}

.page-news__extras-link::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 0;
  height: 1px;
  background: var(--color-gold, #FFD700);
  transition: width var(--news-transition);
}

.page-news__extras-link:hover::after,
.page-news__extras-link:focus-visible::after {
  width: 100%;
}

.page-news__extras-link:hover,
.page-news__extras-link:focus-visible {
  color: var(--color-gold, #FFD700);
}

/* ===== 移动端优先适配 ===== */
@media (max-width: 767px) {
  .page-news {
    flex-direction: column;
    padding: 0 12px;
  }

  .page-news__brand-track {
    flex: 0 0 auto;
    max-width: none;
    flex-direction: row;
    padding: 12px 0 8px;
    justify-content: flex-start;
    border-bottom: 1px solid rgba(255, 215, 0, 0.15);
    margin-bottom: 12px;
  }

  .page-news__track-inner {
    flex-direction: row;
    position: static;
    gap: 12px;
    align-items: center;
  }

  .page-news__track-logo {
    writing-mode: horizontal-tb;
    font-size: 1rem;
    letter-spacing: 0.08em;
  }

  .page-news__track-label {
    writing-mode: horizontal-tb;
    font-size: 0.7rem;
    letter-spacing: 0.1em;
  }

  .page-news__track-line {
    width: 40px;
    height: 2px;
    background: linear-gradient(to right, var(--color-gold, #FFD700), transparent);
  }

  .page-news__track-deco {
    display: none;
  }

  .page-news__content {
    padding: 8px 0 32px;
  }

  .page-news__heading {
    font-size: 1.8rem;
  }

  .page-news__subheading {
    font-size: 0.85rem;
    margin-bottom: 18px;
  }

  .page-news__tabs {
    gap: 8px;
    padding-bottom: 12px;
    margin-bottom: 4px;
  }

  .page-news__tab {
    padding: 6px 14px;
    font-size: 0.78rem;
  }

  .page-news__tab-icon {
    width: 16px;
    height: 16px;
  }

  .page-news__tab-icon--empty {
    width: 16px;
    height: 16px;
  }

  .page-news__articles {
    column-count: 1;
    column-gap: 0;
  }

  .page-news__card {
    transform: none !important;
    margin-bottom: 16px;
  }

  .page-news__card:hover {
    transform: none !important;
  }

  .page-news__card:nth-child(2n),
  .page-news__card:nth-child(3n),
  .page-news__card:nth-child(5n) {
    transform: none !important;
  }

  .page-news__card-title {
    font-size: 1rem;
  }

  .page-news__extras {
    margin-top: 24px;
    padding-top: 16px;
  }

  .page-news__extras-list {
    flex-direction: column;
    gap: 10px;
  }
}

/* ===== 桌面增强: 较大屏 ===== */
@media (min-width: 1024px) {
  .page-news__heading {
    font-size: 3rem;
  }

  .page-news__articles {
    column-count: 2;
    column-gap: 28px;
  }

  .page-news__card-title {
    font-size: 1.2rem;
  }
}

/* ===== 确保卡片在筛选时过渡平滑 ===== */
.page-news__card {
  transition: background var(--news-transition), box-shadow var(--news-transition), transform var(--news-transition), display 0.2s ease;
}

/* ===== 打印样式 ===== */
@media print {
  .page-news__brand-track {
    display: none;
  }
  .page-news__content {
    padding-left: 0;
  }
  .page-news__card {
    break-inside: avoid;
    box-shadow: none;
    border: 1px solid #ccc;
  }
}