/* ===== 品牌日志 page-news ===== */
.page-news {
  --news-gold-line: #C9A84C;
  --news-card-shadow: rgba(201, 168, 76, 0.08);
  --news-sidebar-width: 260px;
  --news-gap-col: 40px;
  display: block;
  width: 100%;
  max-width: var(--max-width, 1200px);
  margin: 0 auto;
  padding: calc(var(--nav-height, 56px) + 32px) 20px 60px;
  font-family: var(--font-body, "Noto Sans SC", sans-serif);
  color: var(--text-primary, #F5F5DC);
}

/* ---- 顶部英雄区 ---- */
.page-news__hero {
  margin-bottom: 44px;
  border-bottom: 1px solid var(--border-color, #5A7A5A);
  padding-bottom: 24px;
}
.page-news__hero .breadcrumb {
  font-size: 13px;
  color: var(--text-secondary, #A8B5A0);
  margin-bottom: 12px;
  letter-spacing: 0.02em;
}
.page-news__hero .breadcrumb a {
  color: var(--text-secondary, #A8B5A0);
  text-decoration: none;
  transition: color 0.2s;
}
.page-news__hero .breadcrumb a:hover,
.page-news__hero .breadcrumb a:focus-visible {
  color: var(--accent, #C9A84C);
}
.page-news__hero .breadcrumb .sep {
  margin: 0 8px;
  color: var(--border-color, #5A7A5A);
}
.page-news__hero .breadcrumb [aria-current="page"] {
  color: var(--gold, #C9A84C);
  font-weight: 500;
}
.page-news__heading {
  font-family: var(--font-heading, "Noto Serif SC", serif);
  font-size: 36px;
  font-weight: 700;
  color: var(--text-primary, #F5F5DC);
  margin: 0 0 6px;
  letter-spacing: 0.04em;
  line-height: 1.2;
}
.page-news__tagline {
  font-size: 15px;
  color: var(--text-secondary, #A8B5A0);
  letter-spacing: 0.06em;
  margin: 0;
  font-family: var(--font-accent, "Helvetica Neue", Arial, sans-serif);
}

/* ---- 左右布局（移动端上下） ---- */
.page-news__layout {
  display: flex;
  flex-direction: column;
  gap: 36px;
}

/* ===== 左侧索引 ===== */
.page-news__sidebar {
  background: var(--bg-surface, #2C3E2F);
  border: 1px solid var(--border-color, #5A7A5A);
  border-radius: 4px;
  padding: 24px 20px;
  position: relative;
  flex-shrink: 0;
}
.page-news__sidebar::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: linear-gradient(to bottom, var(--gold, #C9A84C), var(--accent-light, #E8C34A));
  border-radius: 2px 0 0 2px;
}
.page-news__sidebar-title-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 20px;
}
.page-news__sidebar-icon {
  display: inline-block;
  width: 4px;
  height: 20px;
  background: var(--gold, #C9A84C);
  border-radius: 2px;
}
.page-news__sidebar-title {
  font-family: var(--font-heading, "Noto Serif SC", serif);
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary, #F5F5DC);
  margin: 0;
  letter-spacing: 0.04em;
}

/* 年份列表 */
.page-news__year-list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.page-news__year-item {
  border-bottom: 1px solid rgba(90, 122, 90, 0.3);
}
.page-news__year-item:last-child {
  border-bottom: none;
}
.page-news__year-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 14px 0;
  background: transparent;
  border: none;
  color: var(--text-primary, #F5F5DC);
  font-family: var(--font-heading, "Noto Serif SC", serif);
  font-size: 16px;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
  transition: color 0.2s;
  letter-spacing: 0.02em;
}
.page-news__year-toggle:hover,
.page-news__year-toggle:focus-visible {
  color: var(--gold, #C9A84C);
  outline: none;
}
.page-news__year-toggle::after {
  content: "";
  display: inline-block;
  width: 8px;
  height: 8px;
  border-right: 2px solid var(--text-secondary, #A8B5A0);
  border-bottom: 2px solid var(--text-secondary, #A8B5A0);
  transform: rotate(45deg);
  transition: transform 0.3s, border-color 0.2s;
  margin-top: -4px;
}
.page-news__year-toggle[aria-expanded="true"]::after {
  transform: rotate(-135deg);
  margin-top: 2px;
  border-color: var(--gold, #C9A84C);
}
.page-news__year-count {
  font-family: var(--font-accent, "Helvetica Neue", Arial, sans-serif);
  font-size: 12px;
  color: var(--text-secondary, #A8B5A0);
  font-weight: 400;
  margin-left: 8px;
}

/* 手风琴内容（默认隐藏，有 data-open 显示） */
.page-news__category-items {
  list-style: none;
  margin: 0;
  padding: 0 0 12px 0;
  display: none;
}
.page-news__category-items[data-open] {
  display: block;
}
.page-news__category-items li {
  padding: 6px 0;
}
.page-news__category-items a {
  color: var(--text-secondary, #A8B5A0);
  text-decoration: none;
  font-size: 14px;
  transition: color 0.2s, padding-left 0.2s;
  display: block;
  padding-left: 8px;
  border-left: 2px solid transparent;
}
.page-news__category-items a:hover,
.page-news__category-items a:focus-visible {
  color: var(--gold, #C9A84C);
  padding-left: 14px;
  border-left-color: var(--gold, #C9A84C);
  outline: none;
}
.page-news__cross-link {
  font-style: italic;
}
.page-news__sidebar-footnote {
  margin-top: 20px;
  padding-top: 14px;
  border-top: 1px solid rgba(90, 122, 90, 0.3);
}
.page-news__sidebar-footnote p {
  font-size: 13px;
  color: var(--text-secondary, #A8B5A0);
  margin: 0;
  line-height: 1.5;
}

/* ===== 右侧内容区 ===== */
.page-news__content {
  flex: 1;
  min-width: 0;
}

/* 章节 */
.page-news__section {
  margin-bottom: 52px;
}
.page-news__section:last-child {
  margin-bottom: 0;
}
.page-news__section-title {
  display: flex;
  align-items: center;
  gap: 14px;
  font-family: var(--font-heading, "Noto Serif SC", serif);
  font-size: 26px;
  font-weight: 700;
  color: var(--text-primary, #F5F5DC);
  margin: 0 0 24px;
  letter-spacing: 0.02em;
}
.page-news__section-title .section-marker {
  font-family: var(--font-accent, "Helvetica Neue", Arial, sans-serif);
  font-size: 18px;
  font-weight: 400;
  color: var(--gold, #C9A84C);
  opacity: 0.7;
}

/* 卡片网格 */
.page-news__card-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

/* 卡片 */
.page-news__card {
  background: var(--bg-surface, #2C3E2F);
  border: 1px solid var(--border-color, #5A7A5A);
  border-radius: 4px;
  overflow: hidden;
  transition: transform 0.3s var(--transition, 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94)),
              box-shadow 0.3s var(--transition, 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94));
  display: flex;
  flex-direction: column;
}
.page-news__card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px var(--news-card-shadow);
  border-color: var(--gold, #C9A84C);
}
.page-news__card-img-wrap {
  overflow: hidden;
  line-height: 0;
  border-bottom: 1px solid var(--border-color, #5A7A5A);
}
.page-news__card-img {
  width: 100%;
  height: auto;
  aspect-ratio: 300 / 160;
  object-fit: cover;
  display: block;
  transition: transform 0.4s ease;
}
.page-news__card:hover .page-news__card-img {
  transform: scale(1.04);
}
.page-news__card-body {
  padding: 20px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.page-news__card-title {
  font-family: var(--font-heading, "Noto Serif SC", serif);
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary, #F5F5DC);
  margin: 0 0 10px;
  letter-spacing: 0.02em;
  line-height: 1.3;
}
.page-news__card-text {
  font-size: 14px;
  color: var(--text-secondary, #A8B5A0);
  line-height: 1.65;
  margin: 0 0 16px;
  flex: 1;
}
.page-news__card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 500;
  color: var(--accent, #C9A84C);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.2s, border-color 0.2s;
  align-self: flex-start;
}
.page-news__card-link:hover,
.page-news__card-link:focus-visible {
  color: var(--gold-bright, #E8C34A);
  border-bottom-color: var(--gold-bright, #E8C34A);
  outline: none;
}

/* ---- 内容索引（03）特殊样式 ---- */
.page-news__section--index {
  background: var(--bg-surface, #2C3E2F);
  border: 1px solid var(--border-color, #5A7A5A);
  border-radius: 4px;
  padding: 28px 24px 32px;
  position: relative;
}
.page-news__section--index::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--gold, #C9A84C), var(--accent-light, #E8C34A));
  border-radius: 2px 2px 0 0;
}
.page-news__section--index .page-news__section-title {
  margin-bottom: 20px;
}
.page-news__index-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
}
.page-news__index-group {
  border-left: 2px solid var(--border-color, #5A7A5A);
  padding-left: 16px;
}
.page-news__index-group-title {
  font-family: var(--font-heading, "Noto Serif SC", serif);
  font-size: 16px;
  font-weight: 600;
  color: var(--gold, #C9A84C);
  margin: 0 0 10px;
  letter-spacing: 0.02em;
}
.page-news__index-list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.page-news__index-item {
  font-size: 14px;
  color: var(--text-secondary, #A8B5A0);
  padding: 5px 0;
  line-height: 1.5;
  position: relative;
  padding-left: 14px;
}
.page-news__index-item::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--border-color, #5A7A5A);
}
.page-news__index-note {
  margin-top: 24px;
  padding-top: 16px;
  border-top: 1px solid rgba(90, 122, 90, 0.3);
  font-size: 14px;
  color: var(--text-secondary, #A8B5A0);
}
.page-news__index-note a {
  color: var(--accent, #C9A84C);
  text-decoration: none;
  transition: color 0.2s;
}
.page-news__index-note a:hover,
.page-news__index-note a:focus-visible {
  color: var(--gold-bright, #E8C34A);
  outline: none;
}

/* ===== 桌面端 ≥768px ===== */
@media (min-width: 768px) {
  .page-news {
    padding-left: 32px;
    padding-right: 32px;
  }
  .page-news__layout {
    flex-direction: row;
    gap: var(--news-gap-col);
    align-items: flex-start;
  }
  .page-news__sidebar {
    width: var(--news-sidebar-width);
    position: sticky;
    top: calc(var(--nav-height, 56px) + 20px);
    max-height: calc(100vh - var(--nav-height, 56px) - 40px);
    overflow-y: auto;
  }
  .page-news__card-grid {
    grid-template-columns: 1fr 1fr;
  }
  .page-news__index-grid {
    grid-template-columns: 1fr 1fr 1fr;
    gap: 24px;
  }
  .page-news__section--index {
    padding: 32px 32px 36px;
  }
}

/* ===== 宽桌面 ≥1024px ===== */
@media (min-width: 1024px) {
  .page-news {
    padding-left: 40px;
    padding-right: 40px;
  }
  .page-news__heading {
    font-size: 40px;
  }
  .page-news--sidebar {
    width: 280px;
  }
  .page-news__card-body {
    padding: 24px;
  }
  .page-news__card-title {
    font-size: 19px;
  }
}

/* ===== 打印 ===== */
@media print {
  .page-news {
    padding-top: 20px;
    color: #222;
  }
  .page-news__sidebar {
    position: static;
    max-height: none;
    border-color: #ccc;
  }
  .page-news__card {
    break-inside: avoid;
    border-color: #ccc;
    box-shadow: none;
  }
  .page-news__card:hover {
    transform: none;
    box-shadow: none;
    border-color: #ccc;
  }
  .page-news__card-img {
    filter: grayscale(1);
  }
  .page-news__section--index {
    border-color: #ccc;
  }
  .page-news__year-toggle::after {
    display: none;
  }
  .page-news__category-items {
    display: block !important;
  }
}