:root {
  --tutorial-step-line: var(--color-field-blue);
  --tutorial-marker-bg: var(--color-panel-strong);
  --tutorial-status-bg: var(--color-panel);
}

.tutorial-hero {
  padding-top: clamp(54px, 8vw, 92px);
  padding-bottom: clamp(54px, 8vw, 88px);
  text-align: center;
}

.tutorial-hero .eyebrow {
  margin-bottom: 18px;
}

.tutorial-hero h1 {
  max-width: 760px;
  margin-right: auto;
  margin-left: auto;
}

.tutorial-lead {
  max-width: 760px;
  margin-right: auto;
  margin-left: auto;
  color: var(--color-text-muted);
  font-size: clamp(16px, 2vw, 19px);
  line-height: 1.8;
}

.tutorial-actions {
  justify-content: center;
  margin-top: 26px;
}

.tutorial-content {
  padding-top: clamp(42px, 6vw, 72px);
}

.handbook-layout {
  position: relative;
}

.tutorial-article {
  width: 100%;
  max-width: var(--reading-width);
  margin-right: auto;
  margin-left: auto;
  padding-top: 30px;
}

.tutorial-article > section {
  scroll-margin-top: calc(var(--header-height) + 24px);
}

.tutorial-intro {
  padding-bottom: 54px;
}

.tutorial-intro h2 {
  margin-top: 0;
}

.tutorial-intro .callout {
  margin-top: 26px;
  margin-bottom: 26px;
}

.preflight-panel {
  margin-top: 28px;
  padding: 24px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-panel);
  color: var(--color-text);
  box-shadow: var(--shadow-soft);
}

.preflight-panel h3 {
  margin-top: 0;
}

.check-list {
  display: grid;
  gap: 10px;
  padding: 0;
  list-style: none;
}

.check-list li {
  position: relative;
  padding-left: 27px;
}

.check-list li::before {
  position: absolute;
  top: 0.38em;
  left: 0;
  display: grid;
  width: 17px;
  height: 17px;
  place-items: center;
  border: 1px solid var(--color-success);
  border-radius: var(--radius-xs);
  color: var(--color-success);
  content: "✓";
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 800;
  line-height: 1;
}

.tutorial-step {
  position: relative;
  padding-top: 62px;
  padding-bottom: 62px;
  border-top: 1px solid var(--color-border);
}

.tutorial-step::before {
  position: absolute;
  top: -1px;
  left: 0;
  width: 96px;
  height: 3px;
  border-radius: 0 0 var(--radius-xs) var(--radius-xs);
  background: var(--tutorial-step-line);
  content: "";
}

.step-heading {
  display: grid;
  grid-template-columns: 54px minmax(0, 1fr);
  gap: 18px;
  margin-bottom: 28px;
  align-items: start;
}

.step-number {
  display: grid;
  width: 54px;
  height: 54px;
  place-items: center;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--tutorial-marker-bg);
  color: var(--color-accent-dark);
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 800;
  box-shadow: var(--shadow-pill);
}

.step-kicker {
  display: block;
  margin-bottom: 5px;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.09em;
}

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

.tutorial-step h3 {
  margin-top: 32px;
}

.tutorial-step .callout {
  margin-top: 28px;
  margin-bottom: 28px;
}

.status-guide {
  margin-top: 34px;
  padding: 24px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--tutorial-status-bg);
  color: var(--color-text);
  box-shadow: var(--shadow-soft);
}

.status-guide h3 {
  margin-top: 0;
}

.status-guide dl {
  display: grid;
  gap: 0;
  margin: 0;
}

.status-guide dl > div {
  display: grid;
  grid-template-columns: 120px minmax(0, 1fr);
  gap: 18px;
  padding-top: 13px;
  padding-bottom: 13px;
  border-top: 1px solid var(--color-border);
}

.status-guide dt {
  color: var(--color-text);
  font-weight: 750;
}

.status-guide dd {
  margin: 0;
  color: var(--color-text-muted);
}

.diagnostic-list {
  display: grid;
  gap: 14px;
  padding: 0;
  counter-reset: diagnostic;
  list-style: none;
}

.diagnostic-list li {
  position: relative;
  padding: 18px 18px 18px 58px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg);
  color: var(--color-text);
  box-shadow: var(--shadow-soft);
  counter-increment: diagnostic;
}

.diagnostic-list li::before {
  position: absolute;
  top: 18px;
  left: 18px;
  display: grid;
  width: 26px;
  height: 26px;
  place-items: center;
  border-radius: var(--radius-xs);
  background: var(--color-accent);
  color: var(--color-bg);
  content: counter(diagnostic);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 800;
}

.diagnostic-list strong {
  display: block;
  color: var(--color-text);
}

.diagnostic-list p {
  margin-top: 5px;
  margin-bottom: 0;
}

.tutorial-troubleshooting {
  padding-bottom: 16px;
}

.tutorial-next {
  padding-top: clamp(54px, 7vw, 82px);
  padding-bottom: clamp(54px, 7vw, 82px);
}

.next-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 32px;
  align-items: center;
}

.next-panel .eyebrow {
  margin-bottom: 14px;
}

.next-panel h2 {
  margin-bottom: 12px;
}

.next-panel p {
  max-width: 580px;
  color: var(--color-text-muted);
}

@media (max-width: 760px) {
  .tutorial-article {
    padding-top: 24px;
  }

  .tutorial-step {
    padding-top: 50px;
    padding-bottom: 50px;
  }

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

  .next-panel .button-row {
    align-items: stretch;
  }
}

@media (max-width: 540px) {
  .tutorial-hero {
    text-align: left;
  }

  .tutorial-hero h1,
  .tutorial-lead {
    margin-right: 0;
    margin-left: 0;
  }

  .tutorial-actions {
    justify-content: flex-start;
  }

  .step-heading {
    grid-template-columns: 44px minmax(0, 1fr);
    gap: 13px;
  }

  .step-number {
    width: 44px;
    height: 44px;
    font-size: 12px;
  }

  .preflight-panel,
  .status-guide {
    padding: 18px;
  }

  .status-guide dl > div {
    grid-template-columns: minmax(0, 1fr);
    gap: 3px;
  }

  .diagnostic-list li {
    padding: 16px 16px 16px 50px;
  }

  .diagnostic-list li::before {
    top: 16px;
    left: 14px;
  }
}