:root {
  --tutorial-hero-top: 72px;
  --tutorial-hero-bottom: 80px;
  --tutorial-copy-width: 780px;
  --tutorial-route-gap: 14px;
  --tutorial-route-padding: 22px;
  --tutorial-node-padding: 16px;
  --tutorial-article-top: 72px;
  --tutorial-article-bottom: 112px;
  --tutorial-step-space: 84px;
  --tutorial-heading-gap: 14px;
  --tutorial-check-gap: 12px;
}

.tutorial-hero {
  position: relative;
  padding-top: var(--tutorial-hero-top);
  padding-bottom: var(--tutorial-hero-bottom);
  overflow-x: clip;
}

.tutorial-hero-copy {
  max-width: var(--tutorial-copy-width);
}

.tutorial-hero h1 {
  max-width: var(--tutorial-copy-width);
  font-size: clamp(34px, 4vw, 48px);
}

.tutorial-lead {
  max-width: 760px;
  margin-bottom: 0;
  color: var(--color-text-muted);
  font-size: 16px;
}

.tutorial-hero-actions {
  display: flex;
  margin-top: 26px;
  flex-wrap: wrap;
  gap: 10px;
}

.tutorial-route {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin-top: 46px;
  padding: var(--tutorial-route-padding);
  align-items: center;
  gap: var(--tutorial-route-gap);
}

.tutorial-route-node {
  display: flex;
  min-width: 0;
  min-height: 112px;
  padding: var(--tutorial-node-padding);
  flex-direction: column;
  justify-content: center;
  border: var(--line-thin) solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-panel);
}

.tutorial-route-node strong {
  margin-bottom: 4px;
  font-size: 14px;
}

.tutorial-route-node small {
  line-height: 1.55;
}

.tutorial-route-index {
  margin-bottom: 12px;
  color: var(--color-accent);
  font: 600 11px/1.4 var(--font-mono);
  letter-spacing: 0.08em;
}

.tutorial-route-line {
  display: none;
  height: var(--line-thin);
  background: var(--color-accent-strong);
}

.tutorial-article {
  padding-top: var(--tutorial-article-top);
  padding-bottom: var(--tutorial-article-bottom);
}

.tutorial-opening {
  min-width: 0;
}

.tutorial-prerequisites {
  margin-top: 34px;
}

.tutorial-prerequisites h2 {
  margin-bottom: 14px;
  font-size: 24px;
}

.tutorial-step {
  min-width: 0;
  padding-top: var(--tutorial-step-space);
  scroll-margin-top: calc(var(--header-height) + 18px);
}

.tutorial-step + .tutorial-step {
  margin-top: var(--tutorial-step-space);
  border-top: var(--line-thin) solid var(--color-border);
}

.tutorial-step-heading {
  display: flex;
  min-width: 0;
  margin-bottom: 28px;
  align-items: flex-start;
  gap: var(--tutorial-heading-gap);
}

.tutorial-step-heading h2 {
  margin: 0;
}

.tutorial-step-number {
  display: inline-flex;
  min-width: 66px;
  min-height: 28px;
  flex-shrink: 0;
  align-items: center;
  justify-content: center;
  padding-inline: 9px;
  border: var(--line-thin) solid var(--color-accent-strong);
  border-radius: var(--radius-xs);
  background: var(--color-accent-soft);
  color: var(--color-accent);
  font: 600 10.5px/1.4 var(--font-mono);
  letter-spacing: 0.06em;
}

.tutorial-step h3 {
  margin-top: 34px;
}

.tutorial-checklist {
  display: grid;
  margin: 28px 0 34px;
  padding: 0;
  gap: var(--tutorial-check-gap);
  list-style: none;
  counter-reset: tutorial-check;
}

.tutorial-checklist li {
  position: relative;
  min-width: 0;
  padding: 19px 19px 19px 58px;
  border: var(--line-thin) solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-panel-deep);
  counter-increment: tutorial-check;
}

.tutorial-checklist li::before {
  position: absolute;
  top: 19px;
  left: 18px;
  display: inline-flex;
  width: 24px;
  height: 24px;
  align-items: center;
  justify-content: center;
  border: var(--line-thin) solid var(--color-accent-strong);
  border-radius: var(--radius-xs);
  color: var(--color-accent);
  content: counter(tutorial-check, decimal-leading-zero);
  font: 600 10px/1 var(--font-mono);
}

.tutorial-checklist p {
  margin: 6px 0 0;
}

.tutorial-troubleshooting {
  padding-bottom: 0;
}

@media (max-width: 900px) {
  :root {
    --tutorial-hero-top: 58px;
    --tutorial-hero-bottom: 66px;
    --tutorial-article-top: 60px;
    --tutorial-step-space: 66px;
  }

  .tutorial-route {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  :root {
    --tutorial-hero-top: 42px;
    --tutorial-hero-bottom: 54px;
    --tutorial-route-padding: 12px;
    --tutorial-node-padding: 13px;
    --tutorial-article-top: 46px;
    --tutorial-article-bottom: 92px;
    --tutorial-step-space: 54px;
  }

  .tutorial-hero h1 {
    font-size: clamp(27px, 8vw, 30px);
  }

  .tutorial-lead {
    font-size: 15px;
  }

  .tutorial-hero-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .tutorial-hero-actions .button {
    width: 100%;
  }

  .tutorial-route {
    grid-template-columns: minmax(0, 1fr);
    margin-top: 34px;
  }

  .tutorial-route-node {
    min-height: 92px;
  }

  .tutorial-step-heading {
    flex-direction: column;
  }

  .tutorial-step-heading h2 {
    font-size: 25px;
  }

  .tutorial-checklist li {
    padding: 54px 16px 17px;
  }

  .tutorial-checklist li::before {
    top: 16px;
    left: 16px;
  }
}