/* ===================================
   Blog Post Styles - Clean Editorial Design
   Inspired by modern blog platforms
   TJ Test Prep by EduAvenues®
   =================================== */

/* Reading Progress Bar */
.reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 0%;
  height: 3px;
  background: var(--color-accent);
  z-index: 9999;
  transition: width 0.1s ease-out;
}

/* ===================================
   Blog Post Hero - Clean & Minimal
   =================================== */
.blog-post-hero {
  position: relative;
  overflow: hidden;
}

.blog-post-hero-image {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
}

.blog-post-hero-image::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(0, 46, 84, 0.15);
  pointer-events: none;
  z-index: 2;
}

.blog-post-hero-image img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  transition: opacity 0.4s ease;
}

.blog-post-hero-overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
}

.blog-post-hero-content {
  position: relative;
  z-index: 2;
}

/* Back Link */
.blog-post-back {
  align-items: center;
  letter-spacing: 0.01em;
}

.blog-post-back:hover svg {
  transform: translateX(-3px);
}

.blog-post-back svg {
  transition: var(--transition-base);
  width: 14px;
  height: 14px;
}

/* Category Badge */
.blog-post-category {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  background: var(--color-accent);
  border-radius: var(--radius-sm);
  font-size: 0.625rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-white);
  margin-bottom: var(--space-md);
}

.blog-post-category svg {
  width: 12px;
  height: 12px;
}

/* Category Variations */
.blog-post-category.category-tips {
  background: var(--color-green);
}

.blog-post-category.category-news {
  background: var(--color-red);
}

.blog-post-category.category-prep {
  background: #8b5cf6;
}

/* Title */
.blog-post-title {
  margin-bottom: var(--space-lg);
}

/* Subtitle */
.blog-post-subtitle {
  font-size: 1.0625rem;
  margin-bottom: var(--space-lg);
  line-height: 1.6;
}

/* Meta Info */
.blog-post-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
}

.blog-post-meta .blog-post-category {
  margin-bottom: 0;
}

.blog-post-author-inline,
.blog-post-date,
.blog-post-read-time {
  display: flex;
  align-items: center;
  gap: 5px;
}

.blog-post-author-inline svg,
.blog-post-date svg,
.blog-post-read-time svg {
  width: 14px;
  height: 14px;
  opacity: 0.75;
}

/* ===================================
   Article Body - Clean Typography
   =================================== */

/* Headings - Strong Hierarchy */

.blog-post-body h2:first-of-type {
  border-top: none;
  padding-top: 0;
}

.blog-post-body h2::before {
  display: none;
}

.blog-post-body h4 {
  font-size: 1.0625rem;
  margin: 1.75em 0 0.5em;
}

/* Lists - Clean & Spacious */

.blog-post-body ul li,
.blog-post-body ol li {
  position: relative;
}

.blog-post-body ul li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.7em;
  width: 6px;
  height: 6px;
  background: var(--color-accent);
  border-radius: var(--radius-full);
}

.blog-post-body ol {
  counter-reset: list-counter;
}

.blog-post-body ol li::before {
  content: counter(list-counter) '.';
  position: absolute;
  left: 0;
  font-weight: 700;
  color: var(--color-accent);
}

/* Nested Lists */
.blog-post-body ul ul,
.blog-post-body ol ul,
.blog-post-body ul ol,
.blog-post-body ol ol {
  margin: 0.75em 0 0.5em;
}

.blog-post-body ul ul li::before {
  width: 5px;
  height: 5px;
  background: #9ca3af;
}

/* Blockquote - Prominent Pull Quote Style */
.blog-post-body blockquote {
  position: relative;
}

.blog-post-body blockquote::before {
  display: none;
}

.blog-post-body blockquote::after {
  display: none;
}

.blog-post-body blockquote p {
  margin-bottom: 0;
}

.blog-post-body strong {
  color: #111827;
  font-weight: 700;
}

.blog-post-body em {
  font-style: italic;
}

/* Links */
.blog-post-body a {
  text-decoration: underline;
  transition: all 0.15s ease;
}

.blog-post-body a:hover {
  text-decoration-thickness: 2px;
}

/* Images in Content */
.blog-post-image {
  margin: 2.5em 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.blog-post-image img {
  width: 100%;
  height: auto;
}

.blog-post-image-caption {
  font-size: 0.875rem;
  color: #6b7280;
  text-align: center;
  margin-top: 0.875em;
  font-style: italic;
}

/* ===================================
   Pro Tip / Callout Box - Editorial Style
   =================================== */
.key-takeaway,
.pro-tip,
.callout-box {
  position: relative;
}

.key-takeaway-label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-accent);
  margin-bottom: 0.75em;
}

.key-takeaway-label svg {
  width: 16px;
  height: 16px;
}

.key-takeaway p,
.pro-tip p,
.callout-box p {
  font-size: 1rem;
  color: #374151;
  line-height: 1.7;
  margin: 0;
}

.key-takeaway ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.key-takeaway li {
  padding-left: 1.5em;
  margin-bottom: 0.625em;
  position: relative;
}

.key-takeaway li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--color-accent);
  font-weight: 700;
  font-size: 0.9375rem;
}

.key-takeaway li:last-child {
  margin-bottom: 0;
}

.key-takeaway li strong,
.callout-box strong {
  color: #111827;
  font-weight: 600;
}

/* ===================================
   Info Box - Clean Style
   =================================== */

.info-box-header {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  color: #111827;
  margin-bottom: 0.5em;
  font-size: 1rem;
}

.info-box-header svg {
  width: 18px;
  height: 18px;
  color: var(--color-accent);
}

/* ===================================
   CTA Box - Clean & Effective
   =================================== */
.blog-post-cta {
  margin-top: 3.5em;
}

/* Higher specificity to override .blog-post-body styles */
.blog-post-body .blog-post-cta h3,
.blog-post-cta h3 {
  margin-bottom: 0.5em;
  border-top: none;
  padding-top: 0;
  margin-top: 0;
}

.blog-post-body .blog-post-cta p,
.blog-post-cta p {
  margin-bottom: 1.5em;
  margin-left: auto;
  margin-right: auto;
  font-style: normal;
}

.blog-post-cta::before {
  display: none;
}

.blog-post-body .blog-post-cta .btn:hover,
.blog-post-cta .btn:hover {
  background: rgba(255, 255, 255, 0.9);
}

/* ===================================
   Share Section
   =================================== */
.blog-post-share {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding-top: 2.5em;
  margin-top: 2.5em;
  border-top: 1px solid #e5e7eb;
}

.blog-post-share-label {
  font-size: 0.875rem;
  font-weight: 500;
  color: #6b7280;
}

.blog-post-share-links {
  display: flex;
  gap: 10px;
}

.blog-post-share-link {
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-base);
}

.blog-post-share-link:hover {
  transform: translateY(-2px);
}

.blog-post-share-link.facebook:hover {
  background: #1877f2;
  color: white;
}

.blog-post-share-link.linkedin:hover {
  background: #0a66c2;
  color: white;
}

.blog-post-share-link.twitter:hover {
  background: #000;
  color: white;
}

/* ===================================
   Author Bio Section
   =================================== */
.author-bio {
  margin-top: 2.5em;
  display: flex;
  gap: 1.25em;
}

.author-bio-avatar {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--color-primary);
  color: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.125rem;
  font-weight: 700;
  flex-shrink: 0;
  overflow: hidden;
}

.author-bio-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.author-bio-content h4 {
  margin-bottom: 2px;
}

.author-bio-content .author-title {
  font-size: 0.8125rem;
  font-weight: 500;
  margin-bottom: 0.5em;
}

.author-bio-content p {
  font-size: 0.9375rem;
  line-height: 1.65;
  margin: 0;
}

/* ===================================
   Related Posts Section
   =================================== */
.related-posts {
  background: #f9fafb;
  padding: var(--space-3xl) 0;
}

.related-posts h3 {
  text-align: center;
  font-size: 1.25rem;
  color: #111827;
  margin-bottom: 1.75em;
  font-weight: 600;
}

.related-posts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5em;
  max-width: 780px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

/* ===================================
   Table Styling
   =================================== */
.blog-post-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 2em 0;
  font-size: 0.9375rem;
}

.blog-post-body th,
.blog-post-body td {
  padding: 1em;
  text-align: left;
  border-bottom: 1px solid #e5e7eb;
}

.blog-post-body th {
  background: var(--color-primary);
  color: var(--color-white);
  font-weight: 600;
}

.blog-post-body th:first-child {
  border-radius: var(--radius-sm) 0 0 0;
}

.blog-post-body th:last-child {
  border-radius: 0 var(--radius-sm) 0 0;
}

.blog-post-body tr:hover {
  background: #f9fafb;
}

/* ===================================
   FAQ Section Styling
   =================================== */
.faq-section {
  margin: 3em 0;
  padding: 2em 0 0;
  border-top: 1px solid #e5e7eb;
}

.faq-section h2 {
  text-align: center;
  margin-bottom: 1.5em;
  border-top: none;
  padding-top: 0;
}

.faq-item {
  background: #f9fafb;
  border-radius: var(--radius-md);
  padding: 1.25em 1.5em;
  margin-bottom: 1em;
}

.faq-item h3 {
  font-size: 1rem;
  font-weight: 600;
  color: #111827;
  margin: 0 0 0.5em 0;
}

.faq-item p {
  font-size: 0.9375rem;
  color: #6b7280;
  margin-bottom: 0;
  line-height: 1.7;
}

/* Compact disclosure layout for editorial FAQs */

.faq-accordion-column {
  display: grid;
  gap: var(--space-sm);
  align-content: start;
}

.faq-accordion .faq-item {
  margin: 0;
  padding: 0;
  overflow: hidden;
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-sm);
  transition:
    border-color 180ms ease,
    background-color 180ms ease;
}

.faq-accordion .faq-item[open] {
  background: var(--color-gray-50);
  border-color: var(--color-gray-300);
}

.faq-accordion summary {
  position: relative;
  padding: var(--space-md) 3.25rem var(--space-md) var(--space-lg);
  color: var(--color-gray-900);
  font-family: var(--font-body);
  font-size: 0.975rem;
  font-weight: 600;
  line-height: 1.4;
  list-style: none;
  cursor: pointer;
}

.faq-accordion summary::-webkit-details-marker {
  display: none;
}

.faq-accordion summary::after {
  content: '+';
  position: absolute;
  top: 50%;
  right: var(--space-md);
  display: grid;
  width: 1.6rem;
  height: 1.6rem;
  place-items: center;
  color: var(--color-primary);
  background: var(--color-gray-100);
  border-radius: 50%;
  font-size: 1.125rem;
  font-weight: 500;
  line-height: 1;
  transform: translateY(-50%);
  transition:
    color 180ms ease,
    background-color 180ms ease;
}

.faq-accordion .faq-item[open] summary::after {
  content: '\2212';
  color: var(--color-white);
  background: var(--color-primary);
}

.faq-accordion summary:hover,
.faq-accordion summary:focus-visible {
  color: var(--color-primary);
}

.faq-accordion summary:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: -2px;
}

.faq-accordion .faq-answer {
  max-height: none;
  padding: 0 var(--space-lg) var(--space-lg);
  overflow: visible;
  transition: none;
}

.faq-accordion .faq-answer p {
  margin: 0;
  padding: var(--space-md) 0 0;
  color: var(--color-gray-600);
  border-top: 1px solid var(--color-gray-200);
  font-size: 0.925rem;
  line-height: 1.65;
}

@media (max-width: 768px) {

  .faq-accordion summary {
    padding-right: 3rem;
  }
}

/* ===================================
   Blog Post Layout with Table of Contents
   =================================== */
.blog-post-layout {
  align-items: start;
}

/* ===================================
   Table of Contents Sidebar
   =================================== */

@media (max-width: 1024px) {
  .toc-sidebar {
    margin-bottom: 1em;
    overflow: hidden;
  }
}

.toc-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  user-select: none;
}

@media (max-width: 1024px) {
  .toc-header {
    background: #f3f4f6;
  }
}

.toc-header h4 {
  text-transform: uppercase;
  margin: 0;
}

.toc-header svg {
  width: 14px;
  height: 14px;
  color: #9ca3af;
  transition: transform 0.2s ease;
  display: none;
}

.toc-sidebar.collapsed .toc-header svg {
  transform: rotate(-180deg);
}

.toc-sidebar.collapsed .toc-content {
  display: none;
}

.toc-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.toc-item {
  position: relative;
}

.toc-link {
  display: block;
  text-decoration: none;
  transition: all 0.2s ease;
  padding-left: 0.75em;
}

.toc-link.active {
  font-weight: 500;
}

/* Nested TOC items (subsections) */
.toc-item .toc-list .toc-link {
  padding-left: 1.25em;
  font-size: 0.75rem;
}

/* ===================================
   EduAvenues Info Box with Bullet Points
   =================================== */

.info-box-ea ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.info-box-ea li {
  position: relative;
  padding-left: 0;
  margin-bottom: 0.625em;
  font-size: 1rem;
  line-height: 1.7;
  color: #374151;
}

.info-box-ea li:last-child {
  margin-bottom: 0;
}

.info-box-ea li strong {
  color: #111827;
  font-weight: 600;
}

/* ===================================
   Feature Cards Grid (Icon Cards)
   =================================== */
.feature-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25em;
  margin: 2em 0;
}

.feature-card {
  background: #f9fafb;
  border: 1px solid #e5e7eb;
  border-radius: var(--radius-md);
  padding: 1.5em;
  transition: all 0.2s ease;
}

.feature-card:hover {
  border-color: #d1d5db;
}

.feature-card-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(1, 138, 253, 0.1);
  border-radius: var(--radius-md);
  margin-bottom: 1em;
  color: var(--color-accent);
}

.feature-card-icon svg {
  width: 22px;
  height: 22px;
}

.feature-card h4 {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 600;
  color: #111827;
  margin: 0 0 0.5em 0;
}

.feature-card p {
  font-size: 0.9375rem;
  color: #6b7280;
  line-height: 1.65;
  margin: 0;
}

/* ===================================
   Stat Cards
   =================================== */
.stat-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1em;
  margin: 2em 0;
}

.stat-card {
  background: #f9fafb;
  border-radius: var(--radius-md);
  padding: 1.25em;
  text-align: center;
}

.stat-card-value {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.2;
}

.stat-card-label {
  font-size: 0.8125rem;
  color: #6b7280;
  margin-top: 0.25em;
}

/* ===================================
   Warning/Important Box
   =================================== */

.warning-box h4 {
  display: flex;
  align-items: center;
  gap: 8px;
}

.warning-box h4 svg {
  width: 18px;
  height: 18px;
}

.warning-box p {
  font-size: 0.9375rem;
  color: #7f1d1d;
  line-height: 1.65;
  margin: 0;
}

/* ===================================
   Success/Tip Box
   =================================== */

.tip-box h4 {
  display: flex;
  align-items: center;
  gap: 8px;
}

.tip-box h4 svg {
  width: 18px;
  height: 18px;
}

.tip-box p {
  font-size: 0.9375rem;
  color: #14532d;
  line-height: 1.65;
  margin: 0;
}

/* ===================================
   Process Steps
   =================================== */
.process-steps {
  margin: 2em 0;
}

.process-step {
  display: flex;
  gap: 1.25em;
  margin-bottom: 1.5em;
  position: relative;
}

.process-step:last-child {
  margin-bottom: 0;
}

.process-step:not(:last-child)::after {
  content: '';
  position: absolute;
  left: 17px;
  top: 44px;
  bottom: -1.5em;
  width: 2px;
  background: #e5e7eb;
}

.process-step-number {
  width: 36px;
  height: 36px;
  background: var(--color-accent);
  color: var(--color-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.9375rem;
  flex-shrink: 0;
  position: relative;
  z-index: 1;
}

.process-step-content h4 {
  font-size: 1rem;
  font-weight: 600;
  color: #111827;
  margin: 0 0 0.375em 0;
}

.process-step-content p {
  font-size: 0.9375rem;
  color: #6b7280;
  line-height: 1.65;
  margin: 0;
}

/* ===================================
   Comparison Table
   =================================== */
.comparison-table {
  margin: 2em 0;
  overflow-x: auto;
}

.comparison-table table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  border: 1px solid #e5e7eb;
  border-radius: var(--radius-md);
  overflow: hidden;
}

.comparison-table th {
  background: var(--color-primary);
  color: var(--color-white);
  font-weight: 600;
  padding: 1em;
  text-align: left;
  font-size: 0.875rem;
}

.comparison-table td {
  padding: 1em;
  border-bottom: 1px solid #e5e7eb;
  font-size: 0.9375rem;
}

.comparison-table tr:last-child td {
  border-bottom: none;
}

.comparison-table tr:nth-child(even) {
  background: #f9fafb;
}

/* ===================================
   Article Content - Main area
   =================================== */
.article-content {
  min-width: 0;
}

/* ===================================
   Responsive Styles
   =================================== */
@media (max-width: 768px) {

  .blog-post-meta-divider {
    display: none;
  }

  .author-bio {
    flex-direction: column;
    text-align: center;
  }

  .feature-cards {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {

  .stat-cards {
    grid-template-columns: 1fr 1fr;
  }
}

/* Related Articles Section */
.related-articles {
  margin-top: var(--space-2xl, 3rem);
  padding-top: var(--space-xl, 2rem);
}

.related-article-card {
  flex-direction: column;
  text-decoration: none;
  transition:
    border-color 0.2s,
    box-shadow 0.2s;
}

.related-article-title {
  margin-bottom: var(--space-xs, 0.5rem);
}

.related-article-link {
  font-size: 0.875rem;
  font-weight: 500;
  margin-top: auto;
}

/* Breadcrumb Navigation */
.breadcrumb {
  margin: 0 auto;
  padding: var(--space-sm, 0.75rem) var(--space-md, 1rem) 0;
  font-size: 0.8125rem;
  color: var(--color-gray-500, #6b7280);
}

.breadcrumb a {
  color: var(--color-gray-500, #6b7280);
  text-decoration: none;
}

.breadcrumb a:hover {
  color: var(--color-accent, #1a6fb5);
}

.breadcrumb span {
  color: var(--color-gray-400, #9ca3af);
}

/* Table of Contents */
.toc {
  margin: 1.5rem 0 2rem;
  padding: 1rem 1.5rem;
  background: var(--color-cream, #f8f6f0);
  border: 1px solid var(--color-gray-200, #e5e5e5);
  border-radius: var(--radius-md, 8px);
  font-size: 0.9375rem;
}
.toc summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--color-primary, #1a2332);
  font-size: 1rem;
  padding: 0.25rem 0;
}
.toc ul {
  list-style: none;
  padding-left: 0;
  margin: 0.75rem 0 0;
}
.toc > details > ul > li {
  margin-bottom: 0.5rem;
}
.toc ul ul {
  padding-left: 1.25rem;
  margin-top: 0.25rem;
}
.toc a {
  color: var(--color-accent, #018afd);
  text-decoration: none;
  line-height: 1.6;
}
.toc a:hover {
  text-decoration: underline;
}

/* Universal EduAvenues editorial article shell */

.blog-post-hero-overlay {
  background: linear-gradient(90deg, rgba(0, 46, 84, 0.86), rgba(0, 70, 120, 0.86));
}

.blog-post-back {
  margin-bottom: var(--space-lg);
  transition: color 180ms ease;
}

.blog-post-title {
  margin-inline: auto;
}

.blog-post-meta {
  margin-bottom: var(--space-md);
}

.breadcrumb {
  max-width: 768px;
  padding-top: var(--space-xl);
  display: none;
}

.blog-post-body h2 {
  margin-top: 3.25rem;
  padding-top: 0;
  border-top: 0;
}

.toc-list {
  margin-bottom: 0;
}

.related-articles,
.blog-post-share,
.blog-post-cta {
  max-width: 768px;
  margin-inline: auto;
}

/* ===================================
   Premium Editorial Article System
   =================================== */
.blog-post-hero,
.blog-post-content,
.breadcrumb,
.blog-post-content + .cta {
  --font-heading: 'Source Serif 4', Georgia, 'Times New Roman', serif;
  --font-body: 'Public Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

.blog-post-hero {
  align-items: center;
  justify-content: center;
  display: block;
  min-height: 0;
  padding: calc(80px + var(--space-lg)) var(--space-lg) var(--space-2xl);
  background: var(--color-gray-50);
  border-bottom: 1px solid var(--color-gray-100);
  text-align: center;
}

.blog-post-hero-image,
.blog-post-hero-overlay {
  display: none;
}

.blog-post-hero-content {
  width: 100%;
  max-width: none;
  margin: 0;
  padding: 0;
}

.blog-post-back:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.blog-post-meta {
  width: 100%;
  max-width: 1120px;
  justify-content: center;
  gap: var(--space-xs) var(--space-lg);
  margin: 0 auto var(--space-lg);
}

.blog-post-meta .blog-post-category {
  flex-basis: 100%;
  justify-content: center;
  padding: 0;
  margin: 0;
  background: transparent;
  color: var(--color-gray-500);
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.28em;
}

.blog-post-category svg {
  display: none;
}

.blog-post-author-inline,
.blog-post-date,
.blog-post-read-time {
  color: var(--color-gray-500);
  font-family: var(--font-body);
  font-size: 0.8125rem;
  letter-spacing: 0.02em;
}

.blog-post-author-inline svg,
.blog-post-date svg,
.blog-post-read-time svg {
  display: none;
}

.blog-post-title {
  max-width: 1120px;
  margin: 0 auto;
  color: var(--color-gray-900);
  font-family: var(--font-heading);
  font-size: clamp(2.5rem, 3.6vw, 3.75rem);
  font-weight: 500;
  letter-spacing: -0.035em;
  line-height: 1.04;
  text-wrap: balance;
}

.blog-post-subtitle {
  max-width: 680px;
  margin: var(--space-lg) auto 0;
  color: var(--color-gray-600);
  font-family: var(--font-body);
}

.blog-post-content {
  padding: var(--space-3xl) 0 calc(var(--space-4xl) + var(--space-xl));
  background: var(--color-white);
}

.blog-post-layout {
  display: grid;
  grid-template-columns: minmax(0, 740px);
  justify-content: center;
  gap: 0;
  width: 100%;
  max-width: 804px;
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

.blog-post-layout:has(.toc-sidebar) {
  grid-template-columns: 200px minmax(0, 740px);
  gap: var(--space-4xl);
  max-width: 1120px;
}

.blog-post-container {
  width: 100%;
  max-width: 804px;
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

.toc-sidebar {
  border-radius: var(--radius-md);
  position: sticky;
  top: 118px;
  margin: 0;
  padding: var(--space-xs) 0 0;
  background: transparent;
  border: 0;
}

.toc-header {
  padding: 0 0 var(--space-md);
  cursor: default;
}

.toc-header h4 {
  color: var(--color-gray-500);
  font-family: var(--font-body);
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.16em;
}

.toc-content {
  column-gap: var(--space-xl);
  padding: 0;
  columns: 1;
}

.toc-link {
  padding: var(--space-sm) 0 var(--space-sm) var(--space-md);
  color: var(--color-gray-500);
  border-left: 1px solid var(--color-gray-100);
  font-family: var(--font-body);
  font-size: 0.8125rem;
  line-height: 1.45;
}

.toc-link:hover,
.toc-link.active {
  color: var(--color-primary);
  border-left-color: var(--color-primary);
}

.blog-post-body {
  max-width: 740px;
  margin: 0;
  color: var(--color-gray-700);
  font-family: var(--font-body);
  font-size: 1.0625rem;
  font-weight: 400;
  letter-spacing: -0.005em;
  line-height: 1.76;
  min-width: 0;
}

.blog-post-body p {
  margin-bottom: 1.45em;
}

.blog-post-body p,
.blog-post-body li,
.blog-post-body blockquote,
.blog-post-body blockquote p,
.blog-post-body table,
.blog-post-body th,
.blog-post-body td,
.blog-post-body figcaption {
  font-family: var(--font-body);
}

.blog-post-body p:first-of-type {
  margin-bottom: var(--space-2xl);
  color: var(--color-gray-700);
  font-size: 1.125rem;
  font-style: normal;
  line-height: 1.72;
}

.blog-post-body p:first-of-type em,
.blog-post-body blockquote p {
  font-style: normal;
}

.blog-post-body h2 {
  margin: calc(var(--space-4xl) + var(--space-sm)) 0 var(--space-lg);
  padding: 0;
  color: var(--color-gray-900);
  border: 0;
  font-family: var(--font-heading);
  font-size: clamp(2rem, 3vw, 2.4rem);
  font-weight: 500;
  letter-spacing: -0.025em;
  line-height: 1.15;
  text-wrap: balance;
}

.blog-post-body h2:first-of-type {
  margin-top: var(--space-4xl);
}

.blog-post-body h3 {
  margin: var(--space-2xl) 0 var(--space-md);
  color: var(--color-gray-900);
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 500;
  letter-spacing: -0.015em;
  line-height: 1.25;
}

.blog-post-body h4 {
  color: var(--color-gray-900);
  font-family: var(--font-heading);
  font-weight: 600;
}

.blog-post-body ul,
.blog-post-body ol {
  margin: var(--space-lg) 0 var(--space-2xl);
  padding-left: var(--space-lg);
}

.blog-post-body ul li {
  margin-bottom: var(--space-sm);
  padding-left: var(--space-md);
  line-height: 1.75;
}

.blog-post-body ol li {
  counter-increment: list-counter;
  margin-bottom: var(--space-sm);
  padding-left: 1.75em;
  line-height: 1.75;
}

.blog-post-body a {
  color: var(--color-primary);
  text-decoration-color: var(--color-accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
}

.blog-post-body a:hover {
  color: var(--color-accent-dark);
}

.key-takeaway,
.pro-tip,
.callout-box,
.info-box,
.info-box-ea,
.warning-box,
.tip-box {
  margin: var(--space-2xl) 0 var(--space-4xl);
  padding: var(--space-xl);
  background: var(--color-gray-50);
  border: 1px solid var(--color-gray-100);
  border-radius: var(--radius-md);
}

.key-takeaway h4,
.info-box h4,
.info-box-ea h4,
.warning-box h4,
.tip-box h4 {
  margin: 0 0 var(--space-lg);
  color: var(--color-gray-900);
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 500;
}

.key-takeaway > ul {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-md) var(--space-xl);
  margin: 0;
  padding: 0;
  list-style: none;
}

.key-takeaway li {
  margin: 0;
  padding: 0;
  color: var(--color-gray-700);
  font-size: 1rem;
  line-height: 1.65;
}

.key-takeaway li strong {
  display: block;
  margin-bottom: var(--space-xs);
  color: var(--color-gray-900);
  font-weight: 600;
}

.blog-post-body blockquote {
  margin: var(--space-2xl) 0;
  padding: var(--space-xl);
  background: var(--color-off-white);
  color: var(--color-gray-700);
  border: 0;
  border-top: 1px solid var(--color-primary);
  border-bottom: 1px solid var(--color-gray-100);
  font-family: var(--font-body);
  font-size: 1rem;
  font-style: normal;
  font-weight: 400;
  line-height: 1.72;
}

.blog-post-body blockquote strong {
  color: var(--color-primary);
  font-family: var(--font-body);
  font-size: inherit;
  font-weight: 700;
}

.blog-post-cta {
  margin: calc(var(--space-4xl) + var(--space-sm)) 0 var(--space-4xl);
  padding: var(--space-2xl);
  background: var(--color-primary);
  border-radius: var(--radius-sm);
  text-align: left;
}

.blog-post-body .blog-post-cta h3,
.blog-post-cta h3 {
  max-width: 540px;
  margin: 0 0 var(--space-md);
  color: var(--color-white);
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 500;
  line-height: 1.15;
}

.blog-post-body .blog-post-cta p,
.blog-post-cta p {
  max-width: 560px;
  margin: 0 0 var(--space-xl);
  color: var(--color-gray-100);
  font-size: 1rem;
  line-height: 1.65;
}

.blog-post-body .blog-post-cta .btn,
.blog-post-cta .btn {
  min-height: 48px;
  padding-inline: var(--space-xl);
  background: var(--color-white);
  color: var(--color-primary);
  border-color: var(--color-white);
  border-radius: var(--radius-md);
}

.author-bio {
  align-items: center;
  margin: 0;
  padding: var(--space-xl) 0;
  background: transparent;
  border: 0;
  border-top: 1px solid var(--color-gray-100);
  border-bottom: 1px solid var(--color-gray-100);
  border-radius: var(--radius-sm);
}

.author-bio-content h4 {
  color: var(--color-gray-900);
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 500;
}

.author-bio-content .author-title,
.author-bio-content p {
  color: var(--color-gray-500);
}

.blog-post-share {
  justify-content: flex-start;
  margin: var(--space-xl) 0 0;
  padding: 0;
  border: 0;
}

.blog-post-share-link {
  width: 38px;
  height: 38px;
  background: transparent;
  color: var(--color-gray-500);
  border: 1px solid var(--color-gray-100);
  border-radius: var(--radius-full);
}

.related-articles {
  margin: var(--space-4xl) 0 0;
  padding: var(--space-xl) 0 0;
  border-top: 1px solid var(--color-gray-100);
}

.related-articles-heading {
  margin-bottom: var(--space-md);
  color: var(--color-gray-900);
  font-family: var(--font-heading);
  font-size: 1.75rem;
  font-weight: 500;
}

.related-articles-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
}

.related-article-card {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: var(--space-lg);
  padding: var(--space-lg) 0;
  background: var(--color-white);
  border: 0;
  border-bottom: 1px solid var(--color-gray-100);
  border-radius: var(--radius-sm);
}

.related-article-card:hover {
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
  border-color: var(--color-gray-200);
  transform: translateX(var(--space-xs));
}

.related-article-title {
  margin: 0;
  color: var(--color-gray-900);
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 500;
  line-height: 1.35;
}

.related-article-link {
  margin: 0;
  color: var(--color-primary);
  white-space: nowrap;
}

.blog-post-content + .cta .cta-content {
  max-width: 760px;
  margin: 0 auto;
}

.blog-post-content + .cta .cta-title {
  font-family: var(--font-heading);
  font-weight: 500;
}

.blog-post-content + .cta .cta-description {
  font-family: var(--font-body);
}

@media (max-width: 1024px) {
  .blog-post-layout:has(.toc-sidebar) {
    grid-template-columns: minmax(0, 740px);
    gap: 0;
    max-width: 804px;
  }

  .toc-sidebar {
    position: static;
    margin: 0 0 var(--space-2xl);
    padding: var(--space-md) 0;
    border-top: 1px solid var(--color-gray-100);
    border-bottom: 1px solid var(--color-gray-100);
    border-radius: var(--radius-sm);
  }

  .toc-header {
    padding: 0;
    cursor: pointer;
  }

  .toc-header svg {
    display: block;
  }

  .toc-content {
    padding-top: var(--space-sm);
    columns: 2;
  }

  .toc-link {
    border-left: 0;
    padding: var(--space-xs) var(--space-md) var(--space-xs) 0;
  }
}

@media (max-width: 768px) {
  .blog-post-hero {
    min-height: 0;
    padding: calc(72px + var(--space-md)) var(--space-md) var(--space-lg);
  }

  .blog-post-meta {
    gap: var(--space-sm) var(--space-md);
    margin-bottom: var(--space-md);
  }

  .blog-post-title {
    font-size: clamp(2rem, 6.5vw, 2.4rem);
    letter-spacing: -0.03em;
    line-height: 1.05;
  }

  .blog-post-content {
    padding: var(--space-xl) 0 var(--space-4xl);
  }

  .blog-post-layout,
  .blog-post-container {
    padding-inline: var(--space-md);
  }

  .toc-content {
    columns: 1;
  }

  .blog-post-body {
    font-size: 1.025rem;
    line-height: 1.75;
  }

  .blog-post-body p:first-of-type {
    margin-bottom: var(--space-xl);
    font-size: 1.075rem;
    line-height: 1.7;
  }

  .blog-post-body h2 {
    margin-top: var(--space-3xl);
    font-size: 1.8rem;
  }

  .blog-post-body h2:first-of-type {
    margin-top: var(--space-3xl);
  }

  .key-takeaway,
  .pro-tip,
  .callout-box,
  .info-box,
  .info-box-ea,
  .warning-box,
  .tip-box {
    margin-bottom: var(--space-3xl);
    padding: var(--space-lg);
  }

  .key-takeaway > ul {
    grid-template-columns: 1fr;
  }

  .blog-post-body blockquote {
    margin: var(--space-xl) 0;
    padding: var(--space-lg);
  }

  .blog-post-cta {
    margin: var(--space-3xl) 0;
    padding: var(--space-xl) var(--space-lg);
  }

  .blog-post-body .blog-post-cta h3,
  .blog-post-cta h3 {
    font-size: 1.75rem;
  }

  .related-article-card {
    grid-template-columns: 1fr;
    gap: var(--space-xs);
  }

  .related-article-link {
    white-space: normal;
  }
}

@media (max-width: 480px) {
  .blog-post-title {
    font-size: 1.9rem;
  }

  .blog-post-author-inline {
    display: none;
  }
}

/* ===================================
   Blog System Regression Guardrails
   Keep this block last so legacy rules cannot override it.
   =================================== */
.blog-post-back {
  display: flex;
  width: fit-content;
  justify-content: flex-start;
  gap: var(--space-sm);
  margin: 0 auto var(--space-lg) 0;
  padding: var(--space-xs) 0;
  color: var(--color-gray-600);
  background: transparent;
  border: 0;
  border-radius: var(--radius-none, 0);
  font-family: var(--font-body);
  font-size: 0.8125rem;
  font-weight: 500;
  line-height: 1.2;
  text-decoration: none;
}

.blog-post-back::before {
  content: '\2190';
  width: 1rem;
  flex: 0 0 auto;
  font-size: 1rem;
  font-weight: 400;
  line-height: 1;
  text-align: center;
  transition: transform 180ms ease;
}

.blog-post-back > svg {
  display: none;
}

.blog-post-back:hover {
  color: var(--color-primary);
  background: transparent;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
}

.blog-post-back:hover::before {
  transform: translateX(-2px);
}

.blog-post-body img,
.blog-post-body video,
.blog-post-body iframe,
.blog-post-body svg {
  max-width: 100%;
}

.blog-post-body img,
.blog-post-body video {
  height: auto;
}

.blog-post-body > table {
  display: block;
  width: 100%;
  max-width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.table-scroll {
  width: 100%;
  max-width: 100%;
  margin: var(--space-xl) 0;
  overflow-x: auto;
  overscroll-behavior-inline: contain;
  -webkit-overflow-scrolling: touch;
}

.table-scroll > table {
  display: table;
  width: 100%;
  min-width: 640px;
  margin: 0;
}

.blog-post-layout:has(> .toc-sidebar) > .blog-post-body > nav.toc {
  display: none;
}

.faq-section.faq-accordion {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-md);
  margin: calc(var(--space-4xl) + var(--space-sm)) 0 var(--space-4xl);
  padding: var(--space-xl) 0 0;
  border-top: 1px solid var(--color-gray-100);
}

.blog-post-body .faq-section.faq-accordion > h2 {
  grid-column: 1 / -1;
  margin: 0 0 var(--space-sm);
}

.faq-section.faq-accordion .faq-item {
  align-self: start;
  margin: 0;
  padding: 0;
  overflow: hidden;
  background: var(--color-gray-50);
  border: 1px solid var(--color-gray-100);
  border-radius: var(--radius-sm);
}

.faq-accordion .faq-answer {
  color: var(--color-gray-600);
  font-family: var(--font-body);
}

.source-note {
  margin: var(--space-4xl) 0;
  padding: var(--space-xl);
  background: var(--color-gray-50);
  border: 1px solid var(--color-gray-100);
  border-radius: var(--radius-md);
}

.blog-post-body .source-note > h2 {
  margin: 0 0 var(--space-md);
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.blog-post-body .source-note p,
.blog-post-body .source-note li {
  color: var(--color-gray-600);
  font-family: var(--font-body);
  font-size: 0.875rem;
  line-height: 1.65;
}

.blog-post-body .source-note p:last-child,
.blog-post-body .source-note ul:last-child {
  margin-bottom: 0;
}

@media (max-width: 768px) {
  .blog-post-back {
    display: flex;
    margin-bottom: var(--space-md);
  }

  .faq-section.faq-accordion {
    grid-template-columns: 1fr;
  }
}