.page-news {
  background-color: var(--color-deep-space);
  padding: var(--space-xl) 0 var(--space-2xl);
  color: var(--color-white);
  font-family: var(--font-body);
  line-height: 1.6;
}

.page-news .content-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

/* breadcrumb – 特殊样式覆盖全局默认 */
.page-news .breadcrumb {
  font-family: var(--font-nav);
  font-size: 14px;
  color: var(--color-gray);
  margin-bottom: var(--space-md);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}
.page-news .breadcrumb a {
  color: var(--color-star-gold);
  text-decoration: none;
  transition: color var(--transition);
}
.page-news .breadcrumb a:hover,
.page-news .breadcrumb a:focus {
  color: var(--color-white);
}
.page-news .breadcrumb [aria-current="page"] {
  color: var(--color-white);
  font-weight: 600;
}

.page-news .page-title {
  font-family: var(--font-heading);
  font-size: 48px;
  font-weight: 700;
  color: var(--color-white);
  margin: 0 0 var(--space-lg);
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

/* 首屏装饰图 */
.page-news .hero-image {
  margin-bottom: var(--space-xl);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}
.page-news .hero-image img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  max-width: 100%;
}

/* 编号章节共用 */
.page-news .section-numbered {
  position: relative;
  margin-top: var(--space-2xl);
  padding-top: var(--space-2xl);
  border-top: 1px solid var(--color-grid-line);
}
.page-news .section-numbered .num {
  font-family: var(--font-heading);
  font-size: 72px;
  font-weight: 900;
  color: var(--color-star-gold);
  line-height: 1;
  margin-bottom: var(--space-sm);
  opacity: 0.5; /* 半透明，不做视觉干扰 */
}
.page-news .section-numbered .section-heading {
  font-family: var(--font-heading);
  font-size: 36px;
  font-weight: 700;
  color: var(--color-white);
  margin: 0 0 var(--space-lg);
  text-transform: uppercase;
  letter-spacing: 1px;
}
.page-news .section-numbered .section-heading::before {
  content: "// ";
  color: var(--color-arena-red);
}

/* 内容索引装饰图 */
.page-news .index-deco {
  margin-bottom: var(--space-lg);
  border-radius: var(--radius-sm);
  overflow: hidden;
  max-width: 600px;
}
.page-news .index-deco img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  max-width: 100%;
}

/* 文章列表 */
.page-news .article-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

/* 单篇文章卡片 */
.page-news .article-card {
  background-color: var(--color-card-bg);
  border: none;
  border-radius: var(--radius-md);
  padding: 0;
  box-shadow: var(--shadow-card);
  transition: box-shadow var(--transition);
}
.page-news .article-card:hover,
.page-news .article-card:focus-within {
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.5);
}

.page-news .article-card summary {
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-lg);
  list-style: none; /* 移除默认三角形 */
  font-family: var(--font-heading);
  font-size: 22px;
  font-weight: 600;
  color: var(--color-white);
  transition: background-color var(--transition);
  border-radius: var(--radius-md);
}
.page-news .article-card summary::-webkit-details-marker {
  display: none;
}
.page-news .article-card summary:hover,
.page-news .article-card summary:focus {
  background-color: rgba(255, 215, 0, 0.08);
}

.page-news .article-card .article-num {
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 700;
  color: var(--color-arena-red);
  min-width: 30px;
}

.page-news .article-card .article-name {
  flex: 1;
}

.page-news .article-card .article-summary {
  padding: 0 var(--space-lg) var(--space-lg);
  color: var(--color-gray);
  font-size: 15px;
}

.page-news .article-card .article-content-flex {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.page-news .article-card .article-image {
  border-radius: var(--radius-sm);
  overflow: hidden;
  max-width: 300px;
  flex-shrink: 0;
}
.page-news .article-card .article-image img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* 按钮样式（微调全局.btn，限定作用域） */
.page-news .btn {
  display: inline-block;
  font-family: var(--font-nav);
  font-size: 14px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: var(--space-sm) var(--space-md);
  border: 2px solid transparent;
  border-radius: var(--radius-sm);
  cursor: pointer;
  text-decoration: none;
  transition: background-color var(--transition), color var(--transition), border-color var(--transition);
  line-height: 1.4;
}
.page-news .btn-outline {
  background: transparent;
  color: var(--color-star-gold);
  border-color: var(--color-star-gold);
}
.page-news .btn-outline:hover,
.page-news .btn-outline:focus {
  background-color: var(--color-star-gold);
  color: var(--color-deep-space);
}
.page-news .btn-primary {
  background-color: var(--color-arena-red);
  color: var(--color-white);
  border-color: var(--color-arena-red);
}
.page-news .btn-primary:hover,
.page-news .btn-primary:focus {
  background-color: #c62e3e;
  border-color: #c62e3e;
}
.page-news .btn-sm {
  padding: var(--space-xs) var(--space-sm);
  font-size: 12px;
}

/* 专题聚焦卡片 */
.page-news .feature-card {
  background-color: var(--color-card-bg);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  box-shadow: var(--shadow-card);
  margin-top: var(--space-lg);
}

.page-news .feature-card .feature-image {
  border-radius: var(--radius-md);
  overflow: hidden;
  max-width: 100%;
}
.page-news .feature-card .feature-image img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-news .feature-card .feature-content {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.page-news .feature-card .feature-title {
  font-family: var(--font-heading);
  font-size: 28px;
  font-weight: 700;
  color: var(--color-white);
  margin: 0;
  line-height: 1.2;
}

.page-news .feature-card .feature-content p {
  margin: 0;
  color: var(--color-gray);
  font-size: 15px;
}

.page-news .feature-card .feature-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}
.page-news .feature-card .feature-list li {
  padding-left: 1.5em;
  position: relative;
  color: var(--color-white);
  font-size: 14px;
}
.page-news .feature-card .feature-list li::before {
  content: "★";
  position: absolute;
  left: 0;
  color: var(--color-star-gold);
  font-size: 12px;
  top: 2px;
}

/* 响应式：平板以上 */
@media (min-width: 768px) {
  .page-news .article-card .article-content-flex {
    flex-direction: row;
    align-items: flex-start;
  }
  .page-news .article-card .article-text {
    flex: 1;
  }
  .page-news .feature-card {
    flex-direction: row;
    align-items: flex-start;
  }
  .page-news .feature-card .feature-image {
    flex: 0 0 400px;
    max-width: 400px;
  }
  .page-news .feature-card .feature-content {
    flex: 1;
  }
  .page-news .index-deco {
    float: right;
    margin: 0 0 var(--space-md) var(--space-md);
  }
}

/* 桌面宽屏微调 */
@media (min-width: 1024px) {
  .page-news .page-title {
    font-size: 64px;
  }
  .page-news .section-numbered .num {
    font-size: 96px;
  }
  .page-news .hero-image {
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
  }
}