.section-blog-index {
  flex: 1;
}

.section-blog-index .container {
  padding-top: 0;
  padding-bottom: 80px;
}

.blog-index-intro {
  max-width: 820px;
}

.blog-index-group {
  padding-top: 0.25rem;
}

.blog-group-title {
  font-family: 'DM Sans', sans-serif;
  font-size: clamp(1.2rem, 3vw, 1.8rem);
  font-weight: 800;
  letter-spacing: -0.5px;
  margin: 0 0 1rem;
}

.blog-index-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1rem;
}

.blog-index-item {
  padding: 0 0 1rem;
  border-bottom: 1px solid rgba(255, 85, 0, 0.12);
}

.blog-index-link {
  font-family: 'DM Sans', sans-serif;
  font-weight: 700;
  font-size: clamp(1rem, 2.3vw, 1.25rem);
  color: #ff5500;
  text-decoration: none;
  letter-spacing: -0.2px;
}

.blog-index-link:hover {
  color: #ff5500;
}

.blog-index-link--disabled {
  color: var(--bs-secondary-color);
  opacity: 0.72;
  cursor: not-allowed;
  pointer-events: none;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.blog-status-pill {
  font-family: 'Space Mono', monospace;
  font-size: 0.58rem;
  letter-spacing: 1px;
  text-transform: uppercase;
  padding: 0.15rem 0.35rem;
  border: 1px solid rgba(173, 181, 189, 0.45);
  color: var(--bs-secondary-color);
}

.blog-index-description {
  margin: 0.45rem 0 0;
  font-size: 0.82rem;
  line-height: 1.8;
  color: var(--bs-secondary-color);
}

.blog-article {
  max-width: 920px;
}

.blog-article-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.9rem 1.25rem;
  margin-bottom: 1.5rem;
}

.blog-back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: 'Space Mono', monospace;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 2px;
  text-decoration: none;
  color: #ff5500;
}

.blog-chapter-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: 'Space Mono', monospace;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 2px;
  text-decoration: none;
  color: var(--bs-secondary-color);
}

.blog-chapter-link:hover,
.blog-back-link:hover {
  color: #ff5500;
}

.blog-article-header {
  margin-bottom: 2rem;
}

.blog-article-content {
  font-family: 'Space Mono', monospace;
  font-size: 0.84rem;
  line-height: 1.95;
  color: var(--bs-body-color);
}

.blog-article-content h2,
.blog-article-content h3,
.blog-article-content h4 {
  font-family: 'DM Sans', sans-serif;
  font-weight: 800;
  letter-spacing: -0.4px;
  margin: 2rem 0 0.9rem;
}

.blog-article-content a {
  color: #ff5500;
}

.blog-article-content ul,
.blog-article-content ol {
  padding-left: 1.2rem;
}

.blog-table-wrap {
  margin: 1rem 0 1.5rem;
  overflow-x: auto;
  border: 1px solid rgba(255, 85, 0, 0.2);
  background: rgba(255, 85, 0, 0.03);
}

.blog-comparison-table {
  width: 100%;
  min-width: 680px;
  border-collapse: collapse;
  font-size: 0.78rem;
  line-height: 1.65;
}

.blog-comparison-table th,
.blog-comparison-table td {
  padding: 0.55rem 0.65rem;
  border-bottom: 1px solid rgba(255, 85, 0, 0.14);
  text-align: left;
  vertical-align: top;
}

.blog-comparison-table thead th {
  font-family: 'DM Sans', sans-serif;
  font-weight: 700;
  letter-spacing: -0.15px;
  background: rgba(255, 85, 0, 0.08);
}

.blog-comparison-table tbody tr:nth-child(even) {
  background: rgba(255, 85, 0, 0.02);
}

.blog-comparison-table tbody tr:last-child td {
  border-bottom: 0;
}

.blog-related-reading {
  margin-top: 2.5rem;
  padding-top: 1rem;
  border-top: 1px solid rgba(255, 85, 0, 0.18);
}

.blog-technical-appendix {
  margin-top: 2.5rem;
  padding: 1rem;
  border: 1px solid rgba(255, 85, 0, 0.24);
  background: rgba(255, 85, 0, 0.04);
}

.blog-technical-appendix .blog-group-title {
  margin-top: 0;
  margin-bottom: 0.7rem;
}

.blog-technical-appendix h3 {
  margin-top: 1.4rem;
}

.blog-technical-appendix .blog-appendix-thumbnail {
  max-width: 420px;
  margin: 0;
}

.blog-appendix-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.45rem;
}

.blog-appendix-links-item {
  margin: 0;
  padding: 0;
}

.blog-appendix-link {
  font-family: 'Space Mono', monospace;
  font-size: 0.75rem;
  line-height: 1.55;
  color: var(--bs-body-color);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.blog-appendix-link:hover {
  color: #ff5500;
}

.blog-related-reading .blog-index-list .blog-index-item:last-child,
.blog-technical-appendix .blog-index-list .blog-index-item:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.blog-toc {
  border: 1px solid rgba(255, 85, 0, 0.24);
  background: rgba(255, 85, 0, 0.04);
  padding: 1rem 1rem 0.8rem;
  margin: 1.25rem 0 1.6rem;
}

.blog-toc-title {
  margin: 0 0 0.6rem;
  font-family: 'DM Sans', sans-serif;
  font-size: 0.95rem;
  font-weight: 700;
}

.blog-toc-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.35rem;
}

.blog-toc-item {
  margin: 0;
}

.blog-toc-item a {
  color: var(--bs-body-color);
  text-decoration: none;
  font-size: 0.78rem;
  line-height: 1.5;
}

.blog-toc-item a:hover {
  color: #ff5500;
}

.blog-toc-item--sub {
  padding-left: 1rem;
  opacity: 0.92;
}

.blog-article-content pre {
  position: relative;
  padding-top: 2.2rem !important;
  border: 1px solid rgba(255, 85, 0, 0.2);
}

.copy-code-btn {
  position: absolute;
  top: 0.45rem;
  right: 0.45rem;
  border: 1px solid rgba(255, 85, 0, 0.4);
  background: rgba(0, 0, 0, 0.4);
  color: #ff9a6a;
  font-family: 'Space Mono', monospace;
  font-size: 0.62rem;
  letter-spacing: 1px;
  text-transform: uppercase;
  padding: 0.2rem 0.45rem;
  cursor: pointer;
}

.isf-live-shader-demo {
  margin: 1rem 0 2rem;
}

.isf-live-shader-demo .shader-section-container {
  width: 100%;
  max-width: 860px;
  margin-inline: auto;
  text-align: center;
  padding: 0 15px;
}

.isf-live-shader-demo .shader-ratio-keeper {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  background: #000;
  border-radius: 4px;
  overflow: hidden;
  border: 1px solid rgba(255, 85, 0, 0.3);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
  transition: all 0.3s ease;
}

[data-bs-theme="dark"] .isf-live-shader-demo .shader-ratio-keeper {
  box-shadow: 0 0 40px rgba(255, 85, 0, 0.15);
}

.isf-live-shader-demo .shader-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
}

.isf-live-shader-demo .shader-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  background: linear-gradient(0deg, rgba(0, 0, 0, 0.3) 0%, rgba(0, 0, 0, 0) 50%);
  z-index: 2;
}

.shader-instruction {
  margin: 0.65rem 0 0;
  font-size: 0.68rem;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  color: #ff5500 !important;
  text-align: center;
  opacity: 0.95;
}

.isf-quick-takeaway {
  margin: 1rem 0 0;
  padding: 0;
  border-left: 0;
  background: transparent;
}

.blog-article-content figure {
  width: 100%;
  max-width: 860px;
  margin: 0.8rem auto 1.5rem;
}

.blog-article-content img {
  display: block;
  width: 100%;
  max-width: 860px;
  height: auto;
  margin: 0 auto;
  border: 1px solid rgba(255, 85, 0, 0.22);
}

.blog-article-content figcaption {
  margin-top: 0.45rem;
  font-size: 0.72rem;
  line-height: 1.6;
  color: var(--bs-secondary-color);
}

.isf-series-howto {
  border: 1px solid rgba(255, 85, 0, 0.24);
  background: rgba(255, 85, 0, 0.04);
  padding: 1rem 1rem 0.8rem;
  margin: 1.25rem 0 1.6rem;
}

.isf-series-howto h2 {
  margin-top: 0;
}

.isf-series-faq {
  max-width: 860px;
  margin: 1.25rem 0 1.6rem;
}

.isf-series-faq .accordion-header {
  margin: 0 !important;
}

.isf-series-faq .accordion-item {
  border: 1px solid rgba(255, 85, 0, 0.24);
  border-radius: 0;
  background: rgba(255, 85, 0, 0.04);
  overflow: hidden;
}

.isf-series-faq .accordion-button {
  font-family: 'DM Sans', sans-serif;
  font-weight: 700;
  font-size: 0.84rem;
  letter-spacing: -0.15px;
  background: transparent;
  color: var(--bs-body-color);
  padding: 0.62rem 0.9rem;
  line-height: 1.45;
  min-height: 0;
}

.isf-series-faq .accordion-button:not(.collapsed) {
  color: #ff5500;
  background: rgba(255, 85, 0, 0.08);
  box-shadow: none;
}

.isf-series-faq .accordion-button:focus {
  box-shadow: 0 0 0 0.15rem rgba(255, 85, 0, 0.18);
}

.isf-series-faq .accordion-button::after {
  margin-left: auto;
}

[data-bs-theme="dark"] .isf-series-faq .accordion-button::after {
  filter: brightness(0) invert(1);
}

[data-bs-theme="light"] .isf-series-faq .accordion-button::after {
  filter: brightness(0);
}

.isf-series-faq .accordion-body {
  font-family: 'Space Mono', monospace;
  font-size: 0.8rem;
  line-height: 1.75;
  padding: 0.8rem 0.95rem;
  background: transparent;
}