.tutorial-hero {
  padding-top: 72px;
  padding-bottom: 80px;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-bg);
}

.tutorial-hero .section-kicker {
  text-align: center;
}

.tutorial-hero h1 {
  max-width: 820px;
  margin-right: auto;
  margin-bottom: 20px;
  margin-left: auto;
  text-align: center;
}

.tutorial-hero__lead {
  max-width: 720px;
  margin-right: auto;
  margin-bottom: 0;
  margin-left: auto;
  color: var(--color-muted);
  font-size: 18px;
  text-align: center;
}

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

.tutorial-platform-note {
  margin-top: 48px;
}

.tutorial-document {
  padding-top: 56px;
}

.document-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 42px;
}

.tutorial-prose {
  width: 100%;
  max-width: var(--reading-width);
  margin-right: auto;
  margin-left: auto;
  padding: 48px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  background: var(--color-bg);
}

.tutorial-chapter {
  scroll-margin-top: 82px;
}

.tutorial-chapter + .tutorial-chapter {
  margin-top: 76px;
  padding-top: 76px;
  border-top: 1px solid var(--color-border);
}

.tutorial-prose .tutorial-chapter h2 {
  margin-top: 0;
}

.tutorial-prose .tutorial-chapter h3 {
  margin-top: 34px;
  font-size: 22px;
  font-weight: 500;
}

.step-label {
  display: inline-flex;
  min-height: 30px;
  align-items: center;
  margin-bottom: 14px;
  padding-right: 14px;
  padding-left: 14px;
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-pill);
  background: var(--color-accent-soft);
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
}

.preflight-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 30px;
  margin-bottom: 30px;
}

.preflight-grid .card {
  padding: 22px;
}

.mode-summary {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 32px;
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-panel);
}

.mode-summary > div {
  display: flex;
  min-height: 112px;
  flex-direction: column;
  justify-content: center;
  gap: 8px;
  padding: 24px;
}

.mode-summary > div + div {
  border-left: 1px solid var(--color-border);
}

.mode-summary__name {
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 12px;
}

.mode-summary strong {
  font-size: 17px;
  font-weight: 500;
}

.verification-list {
  display: grid;
  gap: 10px;
  margin-top: 30px;
}

.verification-item {
  display: flex;
  min-height: 52px;
  align-items: center;
  gap: 12px;
  padding: 10px 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-panel);
  color: var(--color-text);
}

.verification-item svg {
  width: 22px;
  height: 22px;
  color: var(--color-accent);
}

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

.tutorial-prose .download-guide h2 {
  margin-top: 0;
}

@media (max-width: 768px) {
  .tutorial-hero {
    padding-top: 52px;
    padding-bottom: 64px;
  }

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

  .tutorial-document {
    padding-top: 36px;
  }

  .document-layout {
    gap: 28px;
  }

  .tutorial-prose {
    padding: 30px;
  }

  .tutorial-chapter + .tutorial-chapter {
    margin-top: 58px;
    padding-top: 58px;
  }

  .preflight-grid,
  .mode-summary {
    grid-template-columns: 1fr;
  }

  .mode-summary > div + div {
    border-top: 1px solid var(--color-border);
    border-left: 0;
  }
}

@media (max-width: 640px) {
  .tutorial-hero {
    padding-top: 42px;
  }

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

  .tutorial-hero__actions .button {
    width: 100%;
  }

  .tutorial-platform-note {
    margin-top: 36px;
  }

  .tutorial-prose {
    padding: 22px;
    border-radius: var(--radius-lg);
  }

  .tutorial-prose .tutorial-chapter h3 {
    font-size: 20px;
  }

  .mode-summary > div {
    min-height: 96px;
    padding: 20px;
  }

  .verification-item {
    align-items: flex-start;
    padding-top: 14px;
    padding-bottom: 14px;
  }
}