:root {
  --tutorial-route-width: 390px;
  --tutorial-reading-width: 850px;
  --tutorial-step-size: 54px;
  --tutorial-rail-offset: 27px;
}

.tutorial-hero {
  padding-top: clamp(50px, 7vw, 88px);
  padding-bottom: clamp(58px, 8vw, 102px);
  border-bottom: 1px solid var(--color-line);
  background: var(--color-panel);
  overflow-x: clip;
}

.tutorial-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(310px, var(--tutorial-route-width));
  align-items: center;
  gap: clamp(40px, 7vw, 92px);
}

.tutorial-intro {
  max-width: 690px;
}

.tutorial-intro h1 {
  max-width: 13em;
}

.tutorial-lead {
  max-width: 42em;
  margin-bottom: 28px;
  color: var(--color-text-muted);
  font-size: clamp(17px, 2vw, 20px);
  line-height: 1.75;
}

.tutorial-route {
  position: relative;
  display: grid;
  gap: 0;
  padding: 18px 0;
}

.tutorial-route::before {
  position: absolute;
  top: 42px;
  bottom: 42px;
  left: 20px;
  width: 2px;
  background: var(--color-accent);
  content: "";
}

.route-node {
  position: relative;
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  column-gap: 16px;
  padding: 16px 0;
}

.route-node span {
  position: relative;
  z-index: 1;
  display: inline-flex;
  width: 42px;
  height: 42px;
  grid-row: 1 / 3;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-pill);
  background: var(--color-canvas);
  color: var(--color-accent-deep);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 800;
  box-shadow: 0 0 0 6px var(--color-panel);
}

.route-node strong {
  align-self: end;
  color: var(--color-text);
  font-family: var(--font-mono);
  font-size: 14px;
}

.route-node p {
  margin: 2px 0 0;
  color: var(--color-text-muted);
  font-size: 14px;
}

.tutorial-nav-section {
  position: relative;
  z-index: 8;
  padding-top: 28px;
  padding-bottom: 0;
}

.tutorial-content {
  max-width: calc(var(--tutorial-reading-width) + var(--gutter) * 2);
}

.platform-note {
  margin-bottom: 34px;
}

.setup-check-grid,
.verification-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 32px;
  margin-bottom: 12px;
}

.setup-check-grid .card,
.verification-grid .card {
  min-height: 100%;
}

.setup-check-grid h3,
.verification-grid h3 {
  font-size: 18px;
}

.setup-check-grid p,
.verification-grid p {
  margin-bottom: 0;
  color: var(--color-text-muted);
}

.tutorial-step {
  position: relative;
}

.step-heading {
  display: grid;
  grid-template-columns: var(--tutorial-step-size) minmax(0, 1fr);
  align-items: start;
  gap: 20px;
  margin-bottom: 34px;
}

.step-index {
  display: inline-flex;
  width: var(--tutorial-step-size);
  height: var(--tutorial-step-size);
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-pill);
  background: var(--color-accent-wash);
  color: var(--color-accent-deep);
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 800;
}

.step-heading .eyebrow {
  margin-top: 3px;
  margin-bottom: 8px;
}

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

.tutorial-step .prose > p {
  color: var(--color-text);
  font-size: 16px;
  line-height: 1.9;
}

.tutorial-step .prose > h3 {
  margin-top: 42px;
}

.tutorial-step .callout {
  margin-top: 30px;
  margin-bottom: 34px;
}

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

.review-list {
  display: grid;
  gap: 0;
  margin-top: 30px;
  margin-bottom: 32px;
  border-top: 1px solid var(--color-line);
}

.review-list > div {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 16px;
  align-items: start;
  padding-top: 18px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--color-line);
}

.review-list span {
  color: var(--color-accent-deep);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 800;
}

.review-list p {
  margin: 0;
  color: var(--color-text-muted);
}

.review-list strong {
  color: var(--color-text);
}

@media (max-width: 860px) {
  .tutorial-hero-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 42px;
  }

  .tutorial-route {
    max-width: 560px;
  }

  .setup-check-grid {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (max-width: 768px) {
  .tutorial-hero {
    padding-top: 42px;
    padding-bottom: 64px;
  }

  .tutorial-lead {
    font-size: 17px;
  }

  .tutorial-nav-section {
    padding-top: 18px;
  }

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

@media (max-width: 520px) {
  :root {
    --tutorial-step-size: 46px;
  }

  .tutorial-route::before {
    left: 18px;
  }

  .route-node {
    grid-template-columns: 38px minmax(0, 1fr);
    column-gap: 13px;
  }

  .route-node span {
    width: 38px;
    height: 38px;
  }

  .step-heading {
    grid-template-columns: var(--tutorial-step-size) minmax(0, 1fr);
    gap: 14px;
  }

  .review-list > div {
    grid-template-columns: 34px minmax(0, 1fr);
    gap: 10px;
  }
}