.tutorial-hero {
  position: relative;
  overflow-x: clip;
  border-bottom: 1px solid var(--color-border);
}

.tutorial-hero-grid {
  display: grid;
  min-height: calc(100svh - var(--header-height));
  grid-template-columns: minmax(0, 1fr) minmax(340px, 0.82fr);
  align-items: center;
  gap: clamp(40px, 7vw, 88px);
}

.tutorial-hero-copy {
  position: relative;
  z-index: 2;
}

.tutorial-hero-copy h1 {
  margin-top: 20px;
}

.tutorial-hero-lede {
  max-width: 58ch;
  margin-bottom: 24px;
  color: var(--color-text-muted);
  font-size: clamp(17px, 2vw, 20px);
  line-height: 1.8;
}

.tutorial-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  margin: 24px 0 0;
  padding: 22px 0 0;
  border-top: 1px solid var(--color-border);
  list-style: none;
}

.tutorial-facts li {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--color-text-muted);
  font-size: 14px;
}

.tutorial-stage {
  position: relative;
  display: flex;
  min-height: 480px;
  align-items: center;
  justify-content: center;
}

.tutorial-stage::before {
  position: absolute;
  width: min(620px, 110vw);
  aspect-ratio: 1;
  border-radius: var(--radius-pill);
  background: var(--gradient-halo);
  content: '';
}

.tutorial-route {
  position: absolute;
  top: 8%;
  right: -4%;
  color: var(--color-border);
}

.journey-board {
  position: relative;
  z-index: 2;
  width: min(440px, 100%);
  overflow: hidden;
  border: 1px solid var(--color-client-line);
  border-radius: var(--radius-xl);
  background: var(--color-client-bg);
  box-shadow: var(--shadow-client);
  color: var(--color-client-ink);
  transform: rotate(2deg);
}

.journey-board-bar {
  display: flex;
  align-items: center;
  gap: 7px;
  min-height: 52px;
  padding: 12px 17px;
  border-bottom: 1px solid var(--color-client-line);
}

.journey-board-bar strong {
  margin-left: 7px;
  color: var(--color-client-ink);
  font-size: 13px;
}

.journey-board-body {
  display: grid;
  gap: 9px;
  padding: 17px;
}

.journey-item {
  position: relative;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 12px;
  min-height: 70px;
  padding: 12px 13px;
  border: 1px solid var(--color-client-line);
  border-radius: var(--radius-md);
  background: var(--color-client-bg);
}

.journey-item.is-current {
  background: var(--color-client-row);
}

.journey-marker {
  width: 12px;
  height: 12px;
  flex: 0 0 auto;
  border: 3px solid var(--color-client-bg);
  border-radius: var(--radius-pill);
  background: var(--color-success);
  box-shadow: 0 0 0 1px var(--color-client-line);
}

.journey-item.is-current .journey-marker {
  background: var(--color-accent);
  box-shadow: 0 0 0 1px var(--color-accent-dark);
}

.journey-item strong,
.journey-item small {
  display: block;
}

.journey-item strong {
  color: var(--color-client-ink);
  font-size: 14px;
}

.journey-item small {
  margin-top: 2px;
  color: var(--color-client-muted);
  font-size: 11px;
}

.journey-state {
  padding: 4px 9px;
  border: 1px solid var(--color-client-pill-line);
  border-radius: var(--radius-pill);
  background: var(--color-client-pill);
  color: var(--color-client-ink);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
}

.tutorial-document {
  padding-top: clamp(52px, 7vw, 86px);
  padding-bottom: var(--section-space);
}

.tutorial-document .toc-tabs {
  margin-bottom: clamp(44px, 6vw, 72px);
}

.tutorial-prose {
  width: 100%;
  max-width: var(--reading-max);
  margin-inline: auto;
}

.tutorial-intro {
  margin-bottom: clamp(54px, 7vw, 84px);
}

.tutorial-intro > p {
  font-size: 17px;
}

.tutorial-step {
  position: relative;
  margin-bottom: clamp(64px, 8vw, 104px);
  padding: clamp(24px, 4vw, 38px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  background: var(--color-panel);
  box-shadow: var(--shadow-raised);
}

.tutorial-step::before {
  position: absolute;
  top: 30px;
  bottom: 30px;
  left: 0;
  width: 4px;
  border-radius: var(--radius-pill);
  background: var(--color-accent);
  content: '';
}

.step-heading {
  margin-bottom: 24px;
}

.step-heading .badge {
  margin-bottom: 16px;
}

.tutorial-prose .step-heading h2 {
  margin: 0;
  color: var(--color-text);
  font-size: clamp(28px, 4vw, 42px);
}

.tutorial-step p {
  line-height: 1.86;
}

.step-action {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 24px;
  margin-top: 30px;
  padding: 20px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-panel-raised);
}

.step-action strong {
  display: block;
  margin-bottom: 3px;
}

.step-action p {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 14px;
  line-height: 1.65;
}

.platform-step {
  background: var(--gradient-panel);
}

.platform-step > .button {
  margin-top: 10px;
}

.tutorial-next {
  padding-top: clamp(12px, 3vw, 30px);
}

.tutorial-prose .tutorial-next h2 {
  margin-top: 0;
}

.next-reading-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 34px;
}

.next-reading-card {
  display: flex;
  min-width: 0;
  flex-direction: column;
  padding: 22px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-panel);
}

.next-reading-card h3 {
  margin-top: 0;
  margin-bottom: 10px;
  font-size: 19px;
}

.next-reading-card p {
  color: var(--color-text-muted);
  font-size: 14px;
  line-height: 1.72;
}

.next-reading-card .article-link {
  margin-top: auto;
}

@media (max-width: 980px) {
  .tutorial-hero-grid {
    min-height: auto;
    grid-template-columns: 1fr;
    padding-top: 64px;
    padding-bottom: 72px;
  }

  .tutorial-stage {
    min-height: 430px;
  }

  .next-reading-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .tutorial-hero-grid {
    gap: 30px;
    padding-top: 44px;
    padding-bottom: 54px;
  }

  .tutorial-stage {
    min-height: 390px;
  }

  .journey-board {
    transform: none;
  }

  .tutorial-route {
    display: none;
  }

  .tutorial-step {
    padding: 24px 20px;
    border-radius: var(--radius-lg);
  }

  .tutorial-step::before {
    top: 24px;
    bottom: 24px;
  }

  .step-action {
    grid-template-columns: 1fr;
  }

  .step-action .button {
    width: 100%;
  }
}

@media (max-width: 440px) {
  .tutorial-stage {
    min-height: 360px;
  }

  .journey-board-body {
    padding: 12px;
  }

  .journey-item {
    grid-template-columns: auto minmax(0, 1fr);
  }

  .journey-state {
    display: none;
  }

  .tutorial-facts {
    display: grid;
  }
}