.guide-hero {
  background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
  padding: 120px 0 64px;
  color: white;
}
.guide-hero .breadcrumb-nav a {
  color: rgba(255, 255, 255, 0.55);
  text-decoration: none;
  font-size: 0.88rem;
  transition: color 0.2s ease;
}
.guide-hero .breadcrumb-nav a:hover {
  color: rgba(255, 255, 255, 0.85);
}
.guide-hero .breadcrumb-nav .bc-sep {
  color: rgba(255, 255, 255, 0.3);
  margin: 0 8px;
}
.guide-hero .breadcrumb-nav .bc-current {
  color: rgba(255, 255, 255, 0.8);
  font-size: 0.88rem;
}
.guide-hero .article-tag {
  display: inline-block;
  background: rgba(148, 163, 184, 0.15);
  color: #94a3b8;
  border: 1px solid rgba(148, 163, 184, 0.2);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 6px 14px;
  border-radius: 4px;
  margin-bottom: 20px;
}
.guide-hero h1 {
  font-size: 2.4rem;
  font-weight: 700;
  line-height: 1.25;
  max-width: 750px;
  color: #ffffff !important;
}
.guide-hero .article-meta {
  color: #64748b;
  font-size: 0.9rem;
  margin-top: 20px;
}
.guide-hero .article-meta span {
  margin-right: 24px;
}

.toc-sidebar {
  position: sticky;
  top: 90px;
  background: #f8fafc;
  border-radius: 10px;
  padding: 22px 20px;
  border: 1px solid #e2e8f0;
}
.toc-sidebar .toc-title {
  color: #64748b;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 14px;
}
.toc-sidebar ol {
  padding-left: 18px;
  margin: 0;
}
.toc-sidebar ol li {
  margin-bottom: 8px;
}
.toc-sidebar ol li a {
  color: #475569;
  text-decoration: none;
  font-size: 0.875rem;
  line-height: 1.5;
  transition: color 0.2s;
}
.toc-sidebar ol li a:hover {
  color: #3b82f6;
}

.article-body h2 {
  font-size: 1.6rem;
  font-weight: 700;
  color: #0f172a;
  margin-top: 3rem;
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid #e2e8f0;
}
.article-body h3 {
  font-size: 1.15rem;
  font-weight: 600;
  color: #1e293b;
  margin-top: 1.75rem;
  margin-bottom: 0.6rem;
}
.article-body p {
  color: #374151;
  font-size: 1rem;
  line-height: 1.8;
  margin-bottom: 1rem;
}
.article-body ul,
.article-body ol {
  color: #374151;
  font-size: 1rem;
  line-height: 1.8;
  margin-bottom: 1rem;
  padding-left: 1.4rem;
}
.article-body li {
  margin-bottom: 0.35rem;
}

.blog-body h2 {
  font-size: 1.6rem;
  font-weight: 700;
  color: #0f172a;
  margin-top: 3rem;
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid #e2e8f0;
}
.blog-body h3 {
  font-size: 1.15rem;
  font-weight: 600;
  color: #1e293b;
  margin-top: 1.75rem;
  margin-bottom: 0.6rem;
}
.blog-body p {
  color: #374151;
  font-size: 1rem;
  line-height: 1.8;
  margin-bottom: 1rem;
}
.blog-body ul,
.blog-body ol {
  color: #374151;
  font-size: 1rem;
  line-height: 1.8;
  margin-bottom: 1rem;
  padding-left: 1.4rem;
}
.blog-body li {
  margin-bottom: 0.35rem;
}

.definition-box {
  background: #f0f9ff;
  border-left: 4px solid #3b82f6;
  border-radius: 0 8px 8px 0;
  padding: 16px 20px;
  margin: 1.5rem 0;
}
.definition-box p {
  color: #1e3a5f;
  margin: 0;
  font-size: 0.97rem;
  line-height: 1.6;
}
.definition-box .def-label {
  font-size: 0.72rem;
  font-weight: 700;
  color: #3b82f6;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 4px;
}

.note-box {
  background: #fff7ed;
  border-left: 4px solid #f97316;
  border-radius: 0 8px 8px 0;
  padding: 16px 20px;
  margin: 1.5rem 0;
}
.note-box p {
  color: #7c2d12;
  margin: 0;
  font-size: 0.97rem;
  line-height: 1.6;
}
.note-box {
  padding: 14px 18px;
  margin: 1.25rem 0;
}

.tldr {
  background: #f8fafc;
  border-left: 4px solid #5624d0;
  border-radius: 0 8px 8px 0;
  padding: 16px 20px;
  margin: 1.5rem 0;
}
.tldr p {
  color: #374151;
  margin: 0;
  font-size: 0.97rem;
  line-height: 1.6;
}
.tldr {
  padding: 1rem 1.5rem;
  margin-bottom: 2rem;
  border-radius: 0 8px 8px 0;
}
.tldr p {
  font-size: 1.05rem;
}

.concept-table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-size: 0.93rem;
}
.concept-table th {
  background: #f1f5f9;
  color: #334155;
  font-weight: 600;
  padding: 10px 14px;
  text-align: left;
  border-bottom: 2px solid #e2e8f0;
}
.concept-table td {
  padding: 10px 14px;
  color: #475569;
  border-bottom: 1px solid #f1f5f9;
  vertical-align: top;
}
.concept-table tr:last-child td {
  border-bottom: none;
}

.section-divider {
  border: none;
  border-top: 1px solid #e2e8f0;
  margin: 3rem 0;
}

.article-cta {
  background: linear-gradient(135deg, #1e40af 0%, #3b82f6 100%);
  border-radius: 16px;
  color: white;
}
.article-cta h3 {
  color: white;
}
.article-cta p {
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 0;
}
.article-cta {
  padding: 36px 40px;
  margin: 3rem 0;
}
.article-cta h3 {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.cta-box {
  background: linear-gradient(135deg, #5624d0 0%, #7c3aed 100%);
  border-radius: 12px;
  color: white;
}
.cta-box h3 {
  color: white;
}
.cta-box p {
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 0;
}
.cta-box {
  padding: 2rem;
  text-align: center;
  margin: 3rem 0;
}
.cta-box h3 {
  margin-bottom: 0.75rem;
}
.cta-box .btn {
  background: #fff;
  color: #5624d0;
  font-weight: 600;
  padding: 0.75rem 2rem;
  border-radius: 8px;
  text-decoration: none;
  display: inline-block;
  margin-top: 0.5rem;
  transition: background 0.2s ease;
}
.cta-box .btn:hover {
  background: #f0f0f0;
}

.guide-cta-section {
  background: linear-gradient(135deg, #0f172a 0%, #1e3a5f 100%);
  padding: 72px 0;
  color: white;
}

.blog-container {
  max-width: 900px;
  margin: 0 auto;
  padding: 2rem 1rem;
}

.blog-header {
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 2px solid #f0f0f0;
}

.blog-meta {
  color: #6c757d;
  font-size: 0.9rem;
  margin-bottom: 1rem;
}
.blog-meta span {
  margin-right: 1rem;
}

.breadcrumb-blog {
  font-size: 0.85rem;
  padding: 0.75rem 0;
}
.breadcrumb-blog a {
  color: #5624d0;
  text-decoration: none;
  transition: color 0.2s ease;
}
.breadcrumb-blog a:hover {
  color: rgb(68.0245901639, 28.4754098361, 164.5245901639);
}
.breadcrumb-blog span {
  color: #999;
  margin: 0 0.4rem;
}

.post-card {
  border: 1px solid #e0e0e0;
  border-radius: 12px;
  padding: 1.5rem;
  margin-bottom: 1.5rem;
  transition: box-shadow 0.2s ease;
}
.post-card:hover {
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
}
.post-card h2 {
  font-size: 1.3rem;
  margin-bottom: 0.5rem;
}
.post-card h2 a {
  color: #2c3e50;
  text-decoration: none;
}
.post-card h2 a:hover {
  color: #5624d0;
}
.post-card .excerpt {
  color: #555;
  line-height: 1.6;
}

.badge-category {
  background: #e8e0f7;
  color: #5624d0;
  padding: 2px 10px;
  border-radius: 12px;
  font-size: 0.8rem;
  font-weight: 500;
}

.badge-reading {
  color: #999;
  font-size: 0.85rem;
}

.related-posts {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 2px solid #f0f0f0;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 1.5rem;
}

.related-card {
  border: 1px solid #e0e0e0;
  border-radius: 8px;
  padding: 1.25rem;
  transition: box-shadow 0.2s ease;
}
.related-card:hover {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}
.related-card h4 {
  font-size: 1rem;
  margin-bottom: 0.5rem;
}
.related-card h4 a {
  color: #2c3e50;
  text-decoration: none;
}
.related-card p {
  font-size: 0.85rem;
  color: #6c757d;
  margin-bottom: 0;
}

.faq-section {
  margin-top: 3rem;
}
.faq-section details {
  border: 1px solid #e0e0e0;
  border-radius: 8px;
  margin-bottom: 0.75rem;
  padding: 1rem 1.25rem;
}
.faq-section details summary {
  font-weight: 600;
  cursor: pointer;
  color: #2c3e50;
}
.faq-section details p {
  margin-top: 0.75rem;
  margin-bottom: 0;
}