.tutorial-masthead {
  background: var(--color-bg);
}

.tutorial-masthead h1 {
  max-width: var(--reading-width);
  margin-top: 20px;
}

.tutorial-masthead .lead {
  margin-bottom: 0;
}

.tutorial-prerequisite {
  margin-top: 30px;
}

.tutorial-toc {
  position: static;
  margin-top: 26px;
}

.tutorial-toc .toc-list {
  counter-reset: tutorial-toc;
}

.tutorial-toc li {
  counter-increment: tutorial-toc;
}

.tutorial-toc a::before {
  margin-right: 7px;
  color: var(--color-accent-dark);
  content: counter(tutorial-toc, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 750;
}

.tutorial-step-heading {
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr);
  gap: 20px;
  align-items: start;
  margin-bottom: 34px;
  padding-bottom: 26px;
  border-bottom: 1px solid var(--color-border);
}

.tutorial-step-number {
  display: grid;
  width: 64px;
  height: 64px;
  place-items: center;
  border-radius: var(--radius-control);
  background: var(--color-accent);
  color: var(--color-on-accent);
  font-family: var(--font-mono);
  font-size: 17px;
  font-weight: 800;
  box-shadow: var(--shadow-button);
}

.tutorial-step-kicker {
  margin-bottom: 7px;
  color: var(--color-accent-dark);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 750;
  letter-spacing: 0.04em;
}

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

.prose .tutorial-step-heading + p {
  font-size: 18px;
  line-height: 1.78;
}

.prose .callout {
  margin-top: 34px;
}

.tutorial-finish {
  margin-top: 44px;
  background: var(--color-panel-alt);
}

.tutorial-checklist {
  display: grid;
  gap: 10px;
  margin-bottom: 22px;
  padding-left: 0;
  list-style: none;
}

.tutorial-checklist li {
  position: relative;
  padding-left: 30px;
}

.tutorial-checklist li::before {
  position: absolute;
  top: 0.54em;
  left: 2px;
  width: 12px;
  height: 12px;
  border: 3px solid var(--color-panel-alt);
  border-radius: var(--radius-pill);
  background: var(--color-success);
  box-shadow: 0 0 0 1px var(--color-success);
  content: '';
}

@media (max-width: 640px) {
  .tutorial-step-heading {
    grid-template-columns: 48px minmax(0, 1fr);
    gap: 14px;
    margin-bottom: 28px;
    padding-bottom: 22px;
  }

  .tutorial-step-number {
    width: 48px;
    height: 48px;
    font-size: 14px;
  }

  .tutorial-step-kicker {
    font-size: 10px;
    overflow-wrap: anywhere;
  }

  .prose .tutorial-step-heading + p {
    font-size: 16px;
  }
}