/* =============================
   页面：品牌日志 (page-news)
   作用域：.page-news
   ============================= */
.page-news {
  --bg-cream: #f5f0e0;
  --text-dark: #2b2b2b;
  --text-heading: #3d2b1f;
  --accent-red: #d40000;
  --accent-gold: #b8860b;
  --border-light: rgba(184,134,11,0.3);
  --font-heading: Impact, Oswald, sans-serif;
  --font-body: Merriweather, Georgia, serif;
  --shadow-soft: 0 2px 12px rgba(0,0,0,0.08);

  background-color: var(--bg-cream);
  color: var(--text-dark);
  font-family: var(--font-body);
  line-height: 1.8;
  padding: 2rem 1rem;
}

.page-news__container {
  max-width: 1280px;
  margin: 0 auto;
}

/* 面包屑 */
.page-news__breadcrumb {
  margin-bottom: 1.5rem;
  font-family: var(--font-heading);
  font-size: 0.875rem;
  letter-spacing: 0.02em;
}
.page-news__breadcrumb ol {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  gap: 0.5rem;
  align-items: baseline;
}
.page-news__breadcrumb li::after {
  content: " / ";
  margin-left: 0.5rem;
  color: var(--accent-gold);
}
.page-news__breadcrumb li:last-child::after {
  content: none;
}
.page-news__breadcrumb a {
  color: var(--accent-red);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s;
}
.page-news__breadcrumb a:hover {
  border-bottom-color: var(--accent-red);
}
.page-news__breadcrumb [aria-current="page"] {
  color: var(--text-heading);
  font-weight: 700;
}

/* 页头 */
.page-news__header {
  margin-bottom: 2.5rem;
}
.page-news__title {
  font-family: var(--font-heading);
  font-size: 3rem; /* ~48px mobile; scaled up on desktop */
  line-height: 1.2;
  color: var(--text-heading);
  margin: 0 0 0.5rem;
  letter-spacing: -0.02em;
  text-transform: uppercase;
}
.page-news__description {
  font-size: 1.125rem;
  color: #555;
  max-width: 640px;
  margin: 0;
  border-left: 4px solid var(--accent-gold);
  padding-left: 1rem;
}

/* 双栏布局 */
.page-news__layout {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}
@media (min-width: 768px) {
  .page-news__layout {
    flex-direction: row;
    align-items: flex-start;
  }
  .page-news__toc {
    position: sticky;
    top: 2rem;
    width: 260px;
    flex-shrink: 0;
  }
  .page-news__articles {
    flex: 1;
    min-width: 0;
  }
  .page-news__title {
    font-size: 4.5rem;
  }
}

/* 左侧目录 */
.page-news__toc-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1rem;
}
@media (min-width: 768px) {
  .page-news__toc-list {
    flex-direction: column;
    gap: 0.5rem;
  }
}
.page-news__toc-link {
  display: inline-block;
  font-family: var(--font-heading);
  font-size: 1.125rem;
  color: var(--accent-red);
  text-decoration: none;
  padding: 0.25rem 0;
  border-bottom: 2px solid transparent;
  transition: border-color 0.2s, color 0.2s;
}
.page-news__toc-link:hover,
.page-news__toc-link:focus {
  border-bottom-color: var(--accent-gold);
  color: var(--text-heading);
}

/* 文章卡片 */
.page-news__article {
  background: #fff;
  border-radius: 4px;
  box-shadow: var(--shadow-soft);
  border: 1px solid var(--border-light);
  padding: 1.5rem;
  margin-bottom: 2rem;
  transition: box-shadow 0.3s;
}
.page-news__article:hover {
  box-shadow: 0 4px 24px rgba(0,0,0,0.12);
}
.page-news__article-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
}
.page-news__article-icon {
  width: 60px;
  height: 60px;
  object-fit: contain;
  flex-shrink: 0;
}
@media (min-width: 768px) {
  .page-news__article-icon {
    width: 80px;
    height: 80px;
  }
}
.page-news__article-title {
  font-family: var(--font-heading);
  font-size: 2rem;
  line-height: 1.2;
  color: var(--text-heading);
  margin: 0;
}
.page-news__article-content {
  font-size: 1rem;
  line-height: 1.8;
}
.page-news__featured-image,
.page-news__insight-image,
.page-news__tool-image {
  display: block;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: 2px;
  margin: 1.5rem auto;
  box-shadow: 0 1px 4px rgba(0,0,0,0.08);
}
.page-news__featured-image {
  width: 100%;
  max-width: 800px;
}
.page-news__insight-image {
  max-width: 400px;
  float: right;
  margin: 0 0 1rem 1.5rem;
}
@media (max-width: 600px) {
  .page-news__insight-image {
    float: none;
    margin: 1rem auto;
    max-width: 100%;
  }
}
.page-news__tool-image {
  max-width: 500px;
  margin: 1.5rem auto;
}

/* 列表样式 */
.page-news__update-list,
.page-news__insight-list,
.page-news__tool-steps {
  padding-left: 1.5rem;
  margin: 1rem 0;
}
.page-news__update-list li,
.page-news__insight-list li,
.page-news__tool-steps li {
  margin-bottom: 0.5rem;
}
.page-news__article-text {
  margin: 1rem 0;
}

/* 链接 */
.page-news__link {
  color: var(--accent-red);
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: color 0.2s;
}
.page-news__link:hover {
  color: var(--accent-gold);
}

/* 相关链接区域 */
.page-news__related-links {
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-light);
  font-size: 0.9375rem;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
}
.page-news__related-label {
  font-weight: 700;
  color: var(--text-heading);
  font-family: var(--font-heading);
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* 移动端优化 */
@media (max-width: 767px) {
  .page-news {
    padding: 1rem 0.75rem;
  }
  .page-news__title {
    font-size: 2.25rem;
  }
  .page-news__description {
    font-size: 1rem;
    padding-left: 0.75rem;
  }
  .page-news__article {
    padding: 1rem;
  }
  .page-news__article-title {
    font-size: 1.5rem;
  }
  .page-news__tool-image {
    max-width: 100%;
  }
}