.tutorial-intro {
  padding-top: clamp(54px, 8vw, 96px);
  padding-bottom: clamp(58px, 8vw, 104px);
}

.tutorial-masthead {
  max-width: var(--reading-width);
  margin-inline: auto;
  text-align: center;
}

.tutorial-masthead .eyebrow {
  display: block;
  margin-top: 22px;
  margin-bottom: 10px;
}

.tutorial-masthead h1 {
  margin-bottom: 18px;
}

.tutorial-deck {
  margin-bottom: 0;
  color: var(--color-text-muted);
  font-size: clamp(16px, 2vw, 19px);
  line-height: 1.85;
}

.tutorial-actions {
  justify-content: center;
  margin-top: 28px;
}

.tutorial-platform-note {
  max-width: var(--reading-width);
  margin: 44px auto 0;
  text-align: left;
}

.setup-flow {
  display: flex;
  max-width: 900px;
  min-height: 64px;
  align-items: center;
  justify-content: center;
  gap: 14px;
  margin: 32px auto 0;
  overflow-x: auto;
  border: 1px solid var(--color-window-line);
  border-radius: var(--radius-large);
  padding: 14px 20px;
  background: var(--color-window);
  color: var(--color-window-text);
  font-family: var(--font-mono);
  font-size: 12px;
  white-space: nowrap;
  -webkit-overflow-scrolling: touch;
}

.setup-flow > span:not(.setup-flow-arrow) {
  border: 1px solid var(--color-window-line);
  border-radius: var(--radius-pill);
  padding: 5px 12px;
  background: var(--color-window-row);
}

.setup-flow-arrow {
  color: var(--color-accent);
  font-size: 16px;
}

.tutorial-document {
  display: grid;
  grid-template-columns: 210px minmax(0, var(--reading-width));
  justify-content: center;
  gap: clamp(34px, 6vw, 76px);
  align-items: start;
}

.tutorial-document .category-toc {
  top: 84px;
  flex-direction: column;
  border-radius: var(--radius-large);
  padding: 8px;
}

.tutorial-document .category-toc a {
  width: 100%;
}

.tutorial-prose {
  width: 100%;
}

.tutorial-chapter {
  padding-bottom: clamp(58px, 8vw, 92px);
  scroll-margin-top: 84px;
}

.tutorial-chapter + .tutorial-chapter {
  border-top: 1px solid var(--color-line);
  padding-top: clamp(58px, 8vw, 92px);
}

.tutorial-chapter:last-child {
  padding-bottom: 0;
}

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

.step-kicker {
  display: inline-flex;
  margin-bottom: 14px;
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-pill);
  padding: 4px 11px;
  background: var(--color-page);
  color: var(--color-accent-deep);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 750;
  letter-spacing: 0.06em;
}

.action-path {
  display: grid;
  gap: 9px;
  margin-block: 30px;
  border: 1px solid var(--color-window-line);
  border-radius: var(--radius-large);
  padding: clamp(18px, 4vw, 28px);
  background: var(--color-window);
  color: var(--color-window-text);
}

.action-path-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 18px;
  border-bottom: 2px solid var(--color-accent);
  padding-bottom: 13px;
}

.action-path-head strong {
  color: var(--color-window-text);
}

.action-path-head span {
  color: var(--color-window-muted);
  font-size: 12px;
}

.action-path-row {
  display: flex;
  min-height: 48px;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  border: 1px solid var(--color-window-line);
  border-radius: var(--radius-medium);
  padding: 10px 14px;
  background: var(--color-window-row);
}

.action-path-label {
  color: var(--color-window-muted);
  font-size: 13px;
}

.action-path-value {
  color: var(--color-window-text);
  font-family: var(--font-mono);
  font-size: 12px;
  text-align: right;
}

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

.mode-comparison .card {
  background: var(--color-page);
}

.mode-comparison h3 {
  font-size: 21px;
}

.mode-comparison p {
  margin-bottom: 0;
  color: var(--color-text-muted);
}

.verification-list {
  display: grid;
  gap: 12px;
  margin-block: 30px;
}

.verification-item {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  gap: 16px;
  align-items: start;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-medium);
  padding: 18px;
  background: var(--color-page);
}

.verification-index {
  display: grid;
  width: 46px;
  height: 46px;
  place-items: center;
  border-radius: 50%;
  background: var(--color-accent-deep);
  color: var(--color-white);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 750;
}

.verification-item strong {
  display: block;
  margin-bottom: 4px;
}

.verification-item p {
  margin-bottom: 0;
  color: var(--color-text-muted);
}

@media (max-width: 900px) {
  .tutorial-document {
    grid-template-columns: minmax(0, var(--reading-width));
  }

  .tutorial-document .category-toc {
    top: 8px;
    flex-direction: row;
    border-radius: var(--radius-medium);
  }

  .tutorial-document .category-toc a {
    width: auto;
  }
}

@media (max-width: 640px) {
  .tutorial-intro {
    padding-top: 42px;
    padding-bottom: 64px;
  }

  .setup-flow {
    justify-content: flex-start;
    border-radius: var(--radius-medium);
    padding-inline: 14px;
  }

  .action-path-head {
    align-items: flex-start;
    flex-direction: column;
    gap: 4px;
  }

  .mode-comparison {
    grid-template-columns: 1fr;
  }

  .verification-item {
    grid-template-columns: 38px minmax(0, 1fr);
    gap: 12px;
    padding: 15px;
  }

  .verification-index {
    width: 38px;
    height: 38px;
  }
}