.desktop-rail {
  position: fixed;
  left: 0;
  top: 0;
  bottom: 0;
  width: var(--rail-width);
  padding: var(--space-6) var(--space-5);
  display: flex;
  flex-direction: column;
  border-right: var(--border-width) solid var(--color-border);
  background: var(--color-bg-elevated);
  z-index: var(--z-header);
}

.desktop-rail__wordmark {
  font-family: var(--font-display);
  font-size: var(--text-h2);
  font-weight: 500;
  line-height: 1.1;
  color: var(--color-text);
  text-decoration: none;
  margin-bottom: var(--space-7);
}

.desktop-rail__nav {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  flex: 1;
}

.desktop-rail__nav-item {
  font-size: var(--text-small);
  font-weight: 500;
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--color-taupe);
  text-decoration: none;
  padding: var(--space-2) 0;
  transition: color var(--duration-hover) var(--ease-expo-out),
              padding-left var(--duration-hover) var(--ease-expo-out);
}

.desktop-rail__nav-item:hover {
  color: var(--color-text);
  padding-left: var(--space-2);
}

.desktop-rail__nav-item.is-active {
  color: var(--color-bronze);
  padding-left: var(--space-2);
  border-left: 2px solid var(--color-champagne);
}

.desktop-rail__footer {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  padding-top: var(--space-4);
}

.desktop-rail__social {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.desktop-rail__social span {
  color: var(--color-taupe);
  font-size: var(--text-label);
}

.desktop-rail__social a {
  font-size: var(--text-small);
  color: var(--color-text);
  text-decoration: none;
  transition: color var(--duration-hover) var(--ease-expo-out);
}

.desktop-rail__social a:hover {
  color: var(--color-bronze);
}

.desktop-content {
  margin-left: var(--rail-width);
  padding: var(--space-7) var(--gutter-desktop);
  min-height: 100vh;
}

@media (min-width: 1440px) {
  .desktop-content { padding: var(--space-8) var(--gutter-desktop-max); }
}

.desktop-section {
  padding-top: var(--section-gap-desktop);
}

@media (min-width: 1440px) {
  .desktop-section { padding-top: var(--section-gap-desktop-max); }
}

.desktop-hero {
  display: grid;
  grid-template-columns: 40% 60%;
  gap: var(--space-7);
  align-items: center;
  min-height: 70vh;
  padding-top: 0;
}

.desktop-hero__text {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.desktop-hero__headline {
  font-size: var(--text-display);
}

.desktop-hero__descriptor {
  color: var(--color-text);
  max-width: 400px;
}

.desktop-hero__media {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  background: var(--color-skeleton);
  aspect-ratio: 4 / 5;
}

.desktop-hero__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.desktop-toc__list {
  display: flex;
  flex-direction: column;
  margin-top: var(--space-5);
}

.desktop-gallery {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
  margin-top: var(--space-5);
}

@media (min-width: 1440px) {
  .desktop-gallery { grid-template-columns: repeat(4, 1fr); gap: var(--space-5); }
}

.gallery-item--wide {
  grid-column: span 2;
}

.gallery-item--tall {
  grid-row: span 2;
}

@media (min-width: 1440px) {
  .gallery-item--wide { grid-column: span 2; }
  .gallery-item--tall { grid-row: span 2; }
}

.lesson-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
  margin-top: var(--space-5);
}

@media (min-width: 1440px) {
  .lesson-grid { grid-template-columns: repeat(3, 1fr); }
}

.editorial-thumbs {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-3);
  margin-top: var(--space-5);
}

@media (min-width: 1440px) {
  .editorial-thumbs { grid-template-columns: repeat(6, 1fr); }
}

.editorial-thumb {
  cursor: pointer;
  overflow: hidden;
  border-radius: var(--radius-sm);
  background: var(--color-skeleton);
}

.editorial-thumb__frame {
  position: relative;
  overflow: hidden;
}

.editorial-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--duration-hover) var(--ease-expo-out);
}

.editorial-thumb:hover img {
  transform: scale(1.05);
}

.desktop-content .about-section {
  padding-top: var(--section-gap-desktop);
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: var(--space-7);
  align-items: start;
  text-align: left;
  max-width: 800px;
}

.desktop-content .about-avatar {
  width: 280px;
  height: 280px;
}

.desktop-content .about-bio {
  max-width: none;
}

.desktop-content .about-bio__text {
  margin-top: var(--space-4);
}

.desktop-content .book-section {
  padding-top: var(--section-gap-desktop);
}

.desktop-content .not-found {
  padding-top: var(--section-gap-desktop);
}