.tutorial-hero {
  position: relative;
  max-width: 100%;
  overflow-x: clip;
  padding-top: 72px;
  padding-bottom: 80px;
  border-bottom: 1px solid var(--color-line);
}

.tutorial-hero::before {
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(rgba(var(--rgb-ink), .035) 1px, var(--color-transparent) 1px),
    linear-gradient(90deg, rgba(var(--rgb-ink), .035) 1px, var(--color-transparent) 1px),
    radial-gradient(ellipse at 50% 12%, rgba(var(--rgb-electric), .14), var(--color-transparent) 62%);
  background-size: 32px 32px, 32px 32px, auto;
  content: '';
  mask-image: linear-gradient(to bottom, var(--color-ink), var(--color-transparent));
}

.tutorial-hero-inner {
  display: flex;
  align-items: center;
  flex-direction: column;
  text-align: center;
}

.tutorial-title {
  max-width: 12em;
  margin-top: 16px;
}

.tutorial-intro {
  max-width: 42em;
  margin: 24px 0 0;
  color: var(--color-ink-soft);
  font-size: 18px;
}

.tutorial-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-top: 28px;
}

.tutorial-facts {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px 20px;
  margin: 24px 0 0;
  padding: 0;
  color: var(--color-ink-soft);
  font-family: var(--font-mono);
  font-size: 12px;
  list-style: none;
}

.tutorial-facts li {
  display: flex;
  align-items: center;
  gap: 8px;
}

.tutorial-facts li::before {
  width: 6px;
  height: 6px;
  flex-shrink: 0;
  border-radius: var(--radius-round);
  background: var(--color-electric);
  box-shadow: 0 0 0 3px rgba(var(--rgb-electric), .14);
  content: '';
}

.tutorial-article {
  padding-top: 42px;
  padding-bottom: var(--section-space);
}

.tutorial-article > .callout {
  margin-top: 30px;
}

.tutorial-step {
  display: grid;
  grid-template-columns: 58px minmax(0, 1fr);
  gap: 22px;
  padding-top: 76px;
}

.step-marker {
  position: sticky;
  top: var(--toc-offset);
  display: grid;
  width: 52px;
  height: 52px;
  place-items: center;
  align-self: start;
  border: 1px solid var(--color-electric);
  border-radius: var(--radius-small);
  background: linear-gradient(180deg, var(--color-electric-light), var(--color-electric));
  color: var(--color-ink);
  box-shadow: var(--shadow-button);
}

.step-marker svg {
  fill: currentColor;
}

.step-content {
  min-width: 0;
  padding-bottom: 68px;
  border-bottom: 1px solid var(--color-line);
}

.step-content h2 {
  margin-top: 12px;
}

.step-content p {
  margin-bottom: 18px;
}

.step-action {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.platform-instructions {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin: 28px 0;
}

.platform-instruction {
  min-width: 0;
  padding: 22px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-small);
  background: var(--color-surface);
  box-shadow: inset 0 1px 0 rgba(var(--rgb-paper), .7), var(--shadow-panel);
}

.platform-instruction h3 {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 12px;
}

.platform-instruction h3::before {
  width: 4px;
  height: 22px;
  flex-shrink: 0;
  border-radius: var(--radius-round);
  background: var(--color-electric);
  content: '';
}

.platform-instruction p {
  margin-bottom: 14px;
  color: var(--color-ink-soft);
  font-size: 15px;
}

.platform-instruction p:last-child {
  margin-bottom: 0;
}

.tutorial-next {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 28px;
  align-items: center;
  margin-top: 76px;
  padding: 30px;
  border: 1px solid var(--color-electric);
  border-radius: var(--radius-medium);
  background:
    radial-gradient(circle at 88% 12%, rgba(var(--rgb-electric), .2), var(--color-transparent) 38%),
    var(--color-surface);
  box-shadow: var(--shadow-electric);
}

.tutorial-next h2 {
  margin-top: 10px;
  margin-bottom: 10px;
  font-size: clamp(28px, 4vw, 38px);
}

.tutorial-next p {
  max-width: 48em;
  margin: 0;
  color: var(--color-ink-soft);
}

@media (max-width: 768px) {
  .tutorial-hero {
    padding-top: 48px;
    padding-bottom: 58px;
  }

  .tutorial-intro {
    font-size: 16px;
  }

  .tutorial-step {
    grid-template-columns: 42px minmax(0, 1fr);
    gap: 14px;
    padding-top: 58px;
  }

  .step-marker {
    width: 40px;
    height: 40px;
  }

  .step-marker svg {
    width: 22px;
    height: 22px;
  }

  .platform-instructions {
    grid-template-columns: 1fr;
  }

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

  .tutorial-next .btn {
    width: 100%;
  }
}

@media (max-width: 640px) {
  .tutorial-hero {
    max-width: 100%;
    overflow-x: clip;
    padding-top: 34px;
    padding-bottom: 48px;
  }

  .tutorial-actions {
    width: 100%;
  }

  .tutorial-actions .btn {
    flex: 1 1 138px;
  }

  .tutorial-facts {
    align-items: flex-start;
    flex-direction: column;
    text-align: left;
  }

  .tutorial-article {
    padding-top: 28px;
  }

  .tutorial-step {
    display: block;
    padding-top: 52px;
  }

  .step-marker {
    position: static;
    margin-bottom: 18px;
  }

  .step-content {
    padding-bottom: 48px;
  }

  .platform-instruction {
    padding: 18px;
  }

  .tutorial-next {
    margin-top: 56px;
    padding: 22px;
  }
}