/* ============================================================
   ARTICLE DETAIL SECTION
============================================================ */
.article-detail-page {
  padding: 60px 0 0;
}

.article-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 40px;
}

/* ============================================================
   ARTICLE HEADER - 只显示标题
============================================================ */
.article-header {
  padding-bottom: 40px;
  margin-bottom: 48px;
  border-bottom: 1px solid var(--line);
  text-align: center;
}

.article-main-title {
  font-family: var(--f-display);
  font-size: 2.5rem;
  font-weight: 800;
  line-height: 1.25;
  color: var(--ink);
  max-width: 800px;
  margin: 0 auto;
}

.meta-title {
  color: var(--ink);
  font-weight: 700;
  font-size: 0.95rem;
  line-height: 1.35;
}

/* ============================================================
   ARTICLE CONTENT
============================================================ */
.article-content {
  font-family: var(--f-body);
  font-size: 1.05rem;
  line-height: 1.85;
  color: var(--ink-2);
  margin-bottom: 56px;
}

/* Lead paragraph */
.article-lead {
  margin-bottom: 36px;
}

.article-lead p {
  font-size: 1.2rem;
  line-height: 1.75;
  color: var(--ink-3);
  font-weight: 400;
}

/* Headings */
.article-content h2 {
  font-family: var(--f-display);
  font-size: 1.85rem;
  font-weight: 700;
  color: var(--ink);
  margin-top: 48px;
  margin-bottom: 20px;
  line-height: 1.3;
}

.article-content h3 {
  font-family: var(--f-display);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--ink);
  margin-top: 36px;
  margin-bottom: 16px;
  line-height: 1.35;
}

/* Paragraphs */
.article-content p {
  margin-bottom: 20px;
}

/* Lists */
.article-content ul,
.article-content ol {
  margin: 24px 0;
  padding-left: 28px;
}

.article-content li {
  margin-bottom: 12px;
  line-height: 1.75;
}

.article-content ul li {
  list-style-type: disc;
}

.article-content ol li {
  list-style-type: decimal;
}

/* Conclusion */
.article-conclusion {
  margin-top: 48px;
  padding: 28px 32px;
  background: var(--sand);
  border-left: 4px solid var(--c1);
  border-radius: var(--r-sm);
  margin-bottom: 2rem;
}

.article-conclusion p {
  font-size: 1.08rem;
  line-height: 1.8;
  color: var(--ink-2);
  margin-bottom: 0;
}

/* ============================================================
   ARTICLE FOOTER
============================================================ */
.article-footer {
  padding: 32px 0;
  margin-bottom: 48px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.article-tags {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}

.tags-label {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--muted);
}

.article-tag {
  display: inline-block;
  padding: 6px 14px;
  background: var(--sand);
  color: var(--ink-3);
  border-radius: 6px;
  font-size: 0.85rem;
  font-weight: 500;
  transition: all 0.25s var(--ease);
}

.article-tag:hover {
  background: var(--c1);
  color: #fff;
  transform: translateY(-2px);
}

.article-share {
  display: flex;
  align-items: center;
  gap: 12px;
}

.share-label {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--muted);
}

.share-btn {
  width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: var(--white);
  color: var(--ink-3);
  font-size: 1.1rem;
  transition: all 0.25s var(--ease);
  cursor: pointer;
}

.share-btn:hover {
  background: var(--c1);
  border-color: var(--c1);
  color: #fff;
  transform: translateY(-2px);
}

/* ============================================================
   ARTICLE NAVIGATION - 左右布局优化
============================================================ */
.article-navigation {
  display: flex;
  justify-content: space-between;
  gap: 32px;
  margin-bottom: 60px;
}

.nav-link {
  flex: 1;
  max-width: 48%;
  display: flex;
  flex-direction: column;
  padding: 28px;
  background: var(--sand);
  border-radius: var(--r-md);
  border: 1px solid var(--line);
  transition: all 0.3s var(--ease);
}

.nav-link:hover {
  background: var(--white);
  border-color: var(--c1);
  box-shadow: 0 6px 20px rgba(155, 12, 14, 0.12);
  transform: translateY(-4px);
}

.nav-link.nav-prev {
  align-items: flex-start;
  text-align: left;
}

.nav-link.nav-next {
  align-items: flex-end;
  text-align: right;
}

.nav-direction {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--gray-light);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 10px;
}

.nav-direction i {
  font-size: 1rem;
}

.nav-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--ink);
  line-height: 1.4;
  transition: color 0.3s var(--ease);
}

.nav-link:hover .nav-title {
  color: var(--c1);
}

/* ============================================================
   RELATED ARTICLES
============================================================ */
.related-articles {
  background: var(--sand);
  padding: 72px 0;
}

.related-articles h2 {
  font-family: var(--f-display);
  font-size: 2rem;
  font-weight: 700;
  color: var(--ink);
  text-align: center;
  margin-bottom: 40px;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
}

.related-card {
  background: var(--white);
  border-radius: var(--r-md);
  overflow: hidden;
  border: 1px solid var(--line);
  transition: all 0.35s var(--ease);
}

.related-card:hover {
  border-color: transparent;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
  transform: translateY(-6px);
}

.related-image {
  width: 100%;
  height: 180px;
  overflow: hidden;
  background: var(--sand);
}

.related-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s var(--ease);
}

.related-card:hover .related-image img {
  transform: scale(1.08);
}

.related-content {
  padding: 20px;
}

.related-content h3 {
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.4;
  color: var(--ink);
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: color 0.3s var(--ease);
}

.related-card:hover .related-content h3 {
  color: var(--c1);
}

.related-content p {
  font-size: 0.88rem;
  line-height: 1.6;
  color: var(--muted);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ============================================================
   BACK TO ARTICLES CTA
============================================================ */
.back-cta {
  background: var(--white);
  padding: 48px 0;
  text-align: center;
}

.back-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 32px;
  background: var(--ink);
  color: #fff;
  border-radius: 50px;
  font-size: 0.95rem;
  font-weight: 600;
  transition: all 0.3s var(--ease);
}

.back-btn:hover {
  background: var(--c1);
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(155, 12, 14, 0.3);
}

.back-btn i {
  font-size: 1.1rem;
}

/* ============================================================
   RESPONSIVE
============================================================ */
@media (max-width: 1024px) {
  .related-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .article-detail-page {
    padding: 40px 0 0;
  }

  .article-container {
    padding: 0 24px;
  }

  .article-content {
    font-size: 1rem;
  }

  .article-lead p {
    font-size: 1.1rem;
  }

  .article-content h2 {
    font-size: 1.5rem;
    margin-top: 36px;
  }

  .article-content h3 {
    font-size: 1.2rem;
    margin-top: 28px;
  }

  .article-navigation {
    gap: 16px;
  }

  .nav-link {
    padding: 20px;
  }

  .nav-link.nav-next {
    text-align: right;
  }

  .nav-direction {
    font-size: 0.7rem;
  }

  .nav-title {
    font-size: 0.95rem;
  }

  .related-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  .related-articles {
    padding: 56px 0;
  }

  .related-articles h2 {
    font-size: 1.6rem;
    margin-bottom: 32px;
  }
}

@media (max-width: 480px) {
  .article-container {
    padding: 0 16px;
  }

  .article-header {
    padding-bottom: 14px;
    margin-bottom: 0;
  }

  .article-main-title {
    font-size: 22px;
    text-align: left;
  }

  .article-content {
    font-size: 0.95rem;
    margin-bottom: 40px;
  }

  .article-lead p {
    font-size: 1.05rem;
  }

  .article-content h2 {
    font-size: 1.35rem;
    margin-top: 32px;
    margin-bottom: 16px;
  }

  .article-content h3 {
    font-size: 1.1rem;
    margin-top: 24px;
    margin-bottom: 12px;
  }

  .article-content ul,
  .article-content ol {
    padding-left: 20px;
    margin: 20px 0;
  }

  .article-conclusion {
    padding: 20px 18px;
  }

  .article-conclusion p,
  .article-content p {
    font-size: 12px;
  }

  .article-footer {
    padding: 24px 0;
    margin-bottom: 36px;
  }

  .article-tags {
    margin-bottom: 16px;
  }

  .nav-link {
    padding: 18px;
  }

  .nav-title {
    font-size: 0.95rem;
  }

  .related-image {
    height: 150px;
  }
}