/* page-news 专属样式 */
.page-news {
  --page-padding: var(--spacing-md);
  --card-radius: var(--radius-md);
  --card-gap: var(--spacing-md);
  color: var(--clr-primary-text);
  background-color: var(--clr-primary-bg);
}

/* 容器 */
.page-news .content-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: calc(var(--nav-height) + var(--spacing-lg)) var(--page-padding) var(--spacing-xl);
}

/* 面包屑 */
.page-news .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  font-family: var(--font-heading);
  font-size: 0.85rem;
  margin-bottom: var(--spacing-md);
  color: rgba(255,255,255,0.6);
}
.page-news .breadcrumb__link {
  color: var(--clr-accent);
  text-decoration: none;
  transition: color 0.2s;
}
.page-news .breadcrumb__link:hover,
.page-news .breadcrumb__link:focus-visible {
  color: var(--clr-accent-hover);
}
.page-news .breadcrumb__sep {
  margin: 0 0.25rem;
}
.page-news .breadcrumb__current {
  color: var(--clr-primary-text);
}

/* Hero 区域 */
.page-news__hero {
  position: relative;
  margin-bottom: var(--spacing-xl);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background-color: #000;
}
.page-news__hero-img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 400px;
  object-fit: cover;
  object-position: center 30%;
}
.page-news__hero-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: var(--spacing-lg);
  background: linear-gradient(to top, rgba(10,10,10,0.85) 0%, transparent 70%);
}
.page-news__hero-title {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.1;
  margin: 0 0 var(--spacing-xs);
  color: var(--clr-primary-text);
}
.page-news__hero-desc {
  font-family: var(--font-body);
  font-size: clamp(1rem, 2vw, 1.2rem);
  margin: 0;
  color: rgba(255,255,255,0.8);
  max-width: 500px;
}

/* 区块标题 */
.page-news__section {
  margin-bottom: var(--spacing-xl);
}
.page-news__section-title {
  font-family: var(--font-heading);
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.1;
  margin: 0 0 var(--spacing-sm);
  color: var(--clr-primary-text);
  border-left: 4px solid var(--clr-accent);
  padding-left: var(--spacing-sm);
}
.page-news__section-desc {
  font-family: var(--font-body);
  font-size: 1.05rem;
  margin: 0 0 var(--spacing-md);
  color: rgba(255,255,255,0.7);
  max-width: 600px;
}

/* 折叠卡片组 */
.page-news__card-group {
  display: flex;
  flex-direction: column;
  gap: var(--card-gap);
}

/* 单张卡片 */
.page-news__card {
  background-color: var(--clr-secondary-bg);
  color: var(--clr-secondary-text);
  border-radius: var(--card-radius);
  border: 1px solid var(--clr-card-border);
  overflow: hidden;
  transition: box-shadow 0.3s ease, border-color 0.3s ease;
}
.page-news__card:hover,
.page-news__card:focus-within {
  box-shadow: 0 4px 20px rgba(242,140,40,0.2);
  border-color: var(--clr-accent);
}

/* 卡片头部（可点击展开区） */
.page-news__card-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  cursor: pointer;
  user-select: none;
  transition: background-color 0.2s;
}
.page-news__card-header:hover,
.page-news__card-header:focus-visible {
  background-color: rgba(242,140,40,0.06);
}
.page-news__card-header .tag {
  flex-shrink: 0;
}
.page-news__card-title {
  font-family: var(--font-heading);
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  font-weight: 700;
  margin: 0;
  flex: 1;
  color: var(--clr-secondary-text);
}
.page-news__card-icon {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 300;
  line-height: 1;
  color: var(--clr-accent);
  transition: transform 0.3s ease;
  flex-shrink: 0;
}
/* 展开状态 - 由js添加open类 */
.page-news__card[data-open] .page-news__card-icon {
  transform: rotate(45deg);
}
.page-news__card[data-open] .page-news__card-body {
  display: block;
}

/* 卡片主体（折叠内容） */
.page-news__card-body {
  padding: 0 var(--spacing-md) var(--spacing-md);
  display: none;
  animation: page-news-fadeIn 0.3s ease;
}
.page-news__card-body p {
  font-family: var(--font-body);
  font-size: 1.05rem;
  line-height: 1.6;
  margin: 0;
  color: var(--clr-secondary-text);
}
.page-news__card-img {
  width: 100%;
  max-width: 600px;
  height: auto;
  border-radius: var(--radius-sm);
  margin-bottom: var(--spacing-sm);
  object-fit: cover;
}

@keyframes page-news-fadeIn {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* 分隔线 */
.page-news__divider {
  text-align: center;
  margin: var(--spacing-xl) 0;
}
.page-news__divider-img {
  display: inline-block;
  max-width: 100%;
  height: auto;
  opacity: 0.6;
}

/* 索引网格 */
.page-news__index-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-md);
}
.page-news__index-card {
  background-color: var(--clr-secondary-bg);
  color: var(--clr-secondary-text);
  border-radius: var(--card-radius);
  border: 1px solid var(--clr-card-border);
  padding: var(--spacing-md);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--spacing-sm);
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}
.page-news__index-card:hover,
.page-news__index-card:focus-within {
  transform: translateY(-4px);
  box-shadow: 0 8px 30px rgba(242,140,40,0.15);
  border-color: var(--clr-accent);
}
.page-news__index-icon {
  width: 80px;
  height: 80px;
  border-radius: var(--radius-full);
  object-fit: cover;
  background-color: var(--clr-tag-bg);
  padding: 0.25rem;
  flex-shrink: 0;
}
.page-news__index-title {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 700;
  margin: 0;
  color: var(--clr-secondary-text);
}
.page-news__index-text {
  font-family: var(--font-body);
  font-size: 0.95rem;
  line-height: 1.5;
  margin: 0;
  color: rgba(26,26,26,0.8);
}
.page-news__index-card .btn--outline {
  margin-top: auto;
}

/* 移动端适配 */
@media (max-width: 768px) {
  .page-news .content-container {
    padding: calc(var(--nav-height) + var(--spacing-md)) var(--spacing-sm) var(--spacing-lg);
  }
  .page-news__hero {
    border-radius: var(--radius-md);
  }
  .page-news__hero-overlay {
    padding: var(--spacing-md);
  }
  .page-news__hero-title {
    font-size: 1.75rem;
  }
  .page-news__hero-desc {
    font-size: 0.95rem;
  }
  .page-news__card-header {
    flex-wrap: wrap;
    padding: var(--spacing-sm);
  }
  .page-news__card-body {
    padding: 0 var(--spacing-sm) var(--spacing-sm);
  }
  .page-news__card-title {
    font-size: 1rem;
  }
  .page-news__section-title {
    font-size: 1.5rem;
  }
  .page-news__index-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-sm);
  }
  .page-news__index-icon {
    width: 60px;
    height: 60px;
  }
}