/* ========== Banner ========== */
.page-banner {
  height: 400px;
  background-size: cover;
  background-position: center;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
}
.page-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(140,151,166,0.5), rgba(0,0,0,0.4));
}
.banner-inner {
  position: relative;
  z-index: 1;
  text-align: center;
}
.banner-title {
  font-size: 42px;
  font-weight: 700;
  letter-spacing: 2px;
  text-shadow: 0 2px 12px rgba(0,0,0,0.4);
}

/* ========== 面包屑 ========== */
.breadcrumb {
  background: #f5f6f8;
  padding: 12px 0;
  font-size: 14px;
  color: var(--text-light);
  border-bottom: 1px solid #eee;
}
.breadcrumb .container a {
  color: var(--primary);
  text-decoration: none;
}
.breadcrumb .container a:hover {
  text-decoration: underline;
}

/* ========== 文章详情定制 ========== */
.article-detail .article-title {
  font-size: 32px;
  color: #1a1a1a;
}
.article-detail .article-cover img {
  max-height: 420px;
  border-radius: 12px;
  object-fit: cover;
  display: block;
}
.article-detail .article-summary {
  background: #f0f2f5;
  border-left: 4px solid var(--primary);
  font-size: 16px;
  border-radius: 0 8px 8px 0;
}
.article-detail .btn-back {
  border-radius: 24px;
  padding: 10px 28px;
  font-size: 15px;
}

/* ========== 响应式 ========== */
@media (max-width: 768px) {
  .page-banner { height: 280px; }
  .banner-title { font-size: 28px; }
  .article-detail .article-title { font-size: 26px; }
}
@media (max-width: 480px) {
  .page-banner { height: 220px; }
  .banner-title { font-size: 22px; }
}