.pi-page--tutorial {
  padding-bottom: clamp(4rem, 9vw, 7rem);
}

.pi-page--tutorial .pi-tutorial-hero {
  align-items: start;
  display: grid;
  gap: clamp(2rem, 5vw, 4.5rem);
  grid-template-columns: minmax(0, 1.35fr) minmax(280px, 0.65fr);
  padding: clamp(3rem, 7vw, 6.5rem) 0 clamp(3rem, 6vw, 5rem);
}

.pi-page--tutorial .pi-tutorial-hero__copy {
  max-width: 760px;
}

.pi-page--tutorial .pi-tutorial-hero h1 {
  color: var(--pi-ink-900);
  font-family: var(--pi-font-display);
  font-size: clamp(2.7rem, 5.5vw, 4.9rem);
  font-weight: 600;
  letter-spacing: -0.035em;
  line-height: 0.98;
  margin: 0.85rem 0 0;
}

.pi-page--tutorial .pi-tutorial-hero__lead {
  color: var(--pi-ink-650);
  font-size: clamp(1.05rem, 1.8vw, 1.25rem);
  line-height: 1.7;
  margin: 1.5rem 0 0;
  max-width: 680px;
}

.pi-page--tutorial .pi-tutorial-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 2rem;
}

.pi-page--tutorial .pi-tutorial-hero__meta {
  color: var(--pi-ink-650);
  font-family: var(--pi-font-data);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  margin: 1rem 0 0;
}

.pi-page--tutorial .pi-tutorial-brief {
  background: var(--pi-surface-inverse);
  border: 1px solid var(--pi-rule-inverse);
  border-radius: var(--pi-radius-lg);
  box-shadow: var(--pi-shadow-lg);
  color: var(--pi-text-inverse);
  overflow: hidden;
  padding: clamp(1.5rem, 3vw, 2.25rem);
  position: relative;
}

.pi-page--tutorial .pi-tutorial-brief::before {
  background: var(--pi-accent-inverse);
  content: "";
  height: 4px;
  inset: 0 0 auto;
  position: absolute;
}

.pi-page--tutorial .pi-tutorial-brief__label {
  color: var(--pi-accent-inverse);
  font-family: var(--pi-font-data);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  margin: 0;
  text-transform: uppercase;
}

.pi-page--tutorial .pi-tutorial-brief h2 {
  color: var(--pi-text-inverse-strong);
  font-family: var(--pi-font-display);
  font-size: 1.65rem;
  line-height: 1.2;
  margin: 0.65rem 0 1.4rem;
}

.pi-page--tutorial .pi-tutorial-brief dl,
.pi-page--tutorial .pi-tutorial-brief dd {
  margin: 0;
}

.pi-page--tutorial .pi-tutorial-brief dl {
  display: grid;
  gap: 1rem;
}

.pi-page--tutorial .pi-tutorial-brief dl > div {
  border-top: 1px solid var(--pi-rule-inverse);
  padding-top: 1rem;
}

.pi-page--tutorial .pi-tutorial-brief dt {
  color: var(--pi-text-inverse-strong);
  font-size: 0.85rem;
  font-weight: 600;
}

.pi-page--tutorial .pi-tutorial-brief dd {
  color: var(--pi-text-inverse-muted);
  line-height: 1.55;
  margin-top: 0.25rem;
}

.pi-page--tutorial .pi-tutorial-layout {
  align-items: start;
  border-top: 1px solid var(--pi-rule-strong);
  display: grid;
  gap: clamp(2rem, 6vw, 5.5rem);
  grid-template-columns: 230px minmax(0, 1fr);
  padding-top: 2rem;
}

.pi-page--tutorial .pi-tutorial-nav {
  position: sticky;
  top: 104px;
}

.pi-page--tutorial .pi-tutorial-nav__label {
  color: var(--pi-ink-650);
  font-family: var(--pi-font-data);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  margin: 0 0 0.75rem;
  text-transform: uppercase;
}

.pi-page--tutorial .pi-tutorial-nav__list {
  border-left: 1px solid var(--pi-rule);
  display: grid;
  gap: 0;
  list-style: none;
  margin: 0;
  padding: 0;
}

.pi-page--tutorial .pi-tutorial-nav a {
  align-items: baseline;
  border-left: 2px solid transparent;
  color: var(--pi-ink-650);
  display: grid;
  font-size: 0.92rem;
  gap: 0.75rem;
  grid-template-columns: 1.7rem 1fr;
  line-height: 1.35;
  margin-left: -1px;
  padding: 0.65rem 0 0.65rem 0.9rem;
  text-decoration: none;
}

.pi-page--tutorial .pi-tutorial-nav a:hover,
.pi-page--tutorial .pi-tutorial-nav a:focus {
  border-left-color: var(--pi-blue-600);
  color: var(--pi-ink-900);
  text-decoration: none;
}

.pi-page--tutorial .pi-tutorial-nav a span {
  color: var(--pi-blue-700);
  font-family: var(--pi-font-data);
  font-size: 0.72rem;
}

.pi-page--tutorial .pi-tutorial-content {
  min-width: 0;
}

.pi-page--tutorial .pi-tutorial-stage {
  border-bottom: 1px solid var(--pi-rule);
  padding: clamp(2.5rem, 6vw, 5rem) 0;
  scroll-margin-top: 96px;
}

.pi-page--tutorial .pi-tutorial-stage:first-child {
  padding-top: 0.75rem;
}

.pi-page--tutorial .pi-tutorial-stage__header {
  max-width: 780px;
}

.pi-page--tutorial .pi-tutorial-stage__number,
.pi-page--tutorial .pi-tutorial-note__label,
.pi-page--tutorial .pi-tutorial-comparison__label,
.pi-page--tutorial .pi-tutorial-method__tag,
.pi-page--tutorial .pi-tutorial-evidence__label {
  color: var(--pi-blue-700);
  font-family: var(--pi-font-data);
  font-size: 0.72rem;
  letter-spacing: 0.11em;
  margin: 0;
  text-transform: uppercase;
}

.pi-page--tutorial .pi-tutorial-stage__header h2 {
  color: var(--pi-ink-900);
  font-family: var(--pi-font-display);
  font-size: clamp(2rem, 3.6vw, 3rem);
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 1.08;
  margin: 0.7rem 0 0;
}

.pi-page--tutorial .pi-tutorial-stage__header > p:last-child {
  color: var(--pi-ink-650);
  font-size: 1.06rem;
  line-height: 1.75;
  margin: 1.1rem 0 0;
}

.pi-page--tutorial .pi-tutorial-definition-grid,
.pi-page--tutorial .pi-tutorial-evidence {
  display: grid;
  gap: 1px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 2rem;
  overflow: hidden;
}

.pi-page--tutorial .pi-tutorial-definition-grid {
  background: var(--pi-rule);
  border: 1px solid var(--pi-rule);
  border-radius: var(--pi-radius-md);
}

.pi-page--tutorial .pi-tutorial-definition-grid > div,
.pi-page--tutorial .pi-tutorial-evidence > div {
  background: var(--pi-paper);
  padding: clamp(1.25rem, 3vw, 1.75rem);
}

.pi-page--tutorial .pi-tutorial-definition-grid h3,
.pi-page--tutorial .pi-tutorial-comparison h3,
.pi-page--tutorial .pi-tutorial-evidence h3,
.pi-page--tutorial .pi-tutorial-checklist h3,
.pi-page--tutorial .pi-tutorial-boundaries h3,
.pi-page--tutorial .pi-tutorial-next h3 {
  color: var(--pi-ink-900);
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.35;
  margin: 0;
}

.pi-page--tutorial .pi-tutorial-definition-grid p,
.pi-page--tutorial .pi-tutorial-comparison p,
.pi-page--tutorial .pi-tutorial-evidence p,
.pi-page--tutorial .pi-tutorial-checklist p,
.pi-page--tutorial .pi-tutorial-next p {
  color: var(--pi-ink-650);
  line-height: 1.65;
  margin: 0.55rem 0 0;
}

.pi-page--tutorial .pi-tutorial-note {
  border-left: 4px solid var(--pi-amber-700);
  margin-top: 2rem;
  max-width: 800px;
  padding: 0.2rem 0 0.2rem 1.25rem;
}

.pi-page--tutorial .pi-tutorial-note > p:last-child {
  color: var(--pi-ink-650);
  line-height: 1.7;
  margin: 0.45rem 0 0;
}

.pi-page--tutorial .pi-tutorial-comparison {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 2rem;
}

.pi-page--tutorial .pi-tutorial-comparison > div {
  background: var(--pi-surface-muted);
  border-radius: var(--pi-radius-md);
  padding: clamp(1.25rem, 3vw, 1.75rem);
}

.pi-page--tutorial .pi-tutorial-comparison h3 {
  margin-top: 0.55rem;
}

.pi-page--tutorial .pi-tutorial-action {
  margin: 1.75rem 0 0;
}

.pi-page--tutorial .pi-tutorial-methods {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 2rem;
}

.pi-page--tutorial .pi-tutorial-method {
  background: var(--pi-paper);
  border: 1px solid var(--pi-rule);
  border-radius: var(--pi-radius-md);
  display: flex;
  flex-direction: column;
  padding: clamp(1.3rem, 3vw, 1.8rem);
}

.pi-page--tutorial .pi-tutorial-method--recommended {
  border-top: 4px solid var(--pi-blue-600);
  grid-column: 1 / -1;
}

.pi-page--tutorial .pi-tutorial-method h3 {
  color: var(--pi-ink-900);
  font-family: var(--pi-font-display);
  font-size: 1.55rem;
  line-height: 1.2;
  margin: 0.7rem 0 0;
}

.pi-page--tutorial .pi-tutorial-method > p:not(.pi-tutorial-method__tag) {
  color: var(--pi-ink-650);
  line-height: 1.65;
  margin: 0.75rem 0 0;
}

.pi-page--tutorial .pi-tutorial-method dl {
  display: grid;
  gap: 0.75rem;
  margin: 1.25rem 0 1.4rem;
}

.pi-page--tutorial .pi-tutorial-method dl > div {
  border-top: 1px solid var(--pi-rule);
  display: grid;
  gap: 0.7rem;
  grid-template-columns: 5rem 1fr;
  padding-top: 0.75rem;
}

.pi-page--tutorial .pi-tutorial-method dt {
  color: var(--pi-ink-900);
  font-size: 0.8rem;
  font-weight: 600;
}

.pi-page--tutorial .pi-tutorial-method dd {
  color: var(--pi-ink-650);
  font-size: 0.9rem;
  line-height: 1.55;
  margin: 0;
}

.pi-page--tutorial .pi-tutorial-method > a {
  align-self: flex-start;
  color: var(--pi-blue-700);
  font-weight: 600;
  margin-top: auto;
  text-decoration: none;
}

.pi-page--tutorial .pi-tutorial-method > a:hover,
.pi-page--tutorial .pi-tutorial-method > a:focus {
  color: var(--pi-blue-600);
  text-decoration: underline;
}

.pi-page--tutorial .pi-tutorial-checklist {
  display: grid;
  list-style: none;
  margin: 2rem 0 0;
  padding: 0;
}

.pi-page--tutorial .pi-tutorial-checklist li {
  border-top: 1px solid var(--pi-rule);
  display: grid;
  gap: 1.25rem;
  grid-template-columns: 2.5rem minmax(0, 1fr);
  padding: 1.25rem 0;
}

.pi-page--tutorial .pi-tutorial-checklist li > span {
  color: var(--pi-blue-700);
  font-family: var(--pi-font-data);
  font-size: 0.78rem;
  padding-top: 0.1rem;
}

.pi-page--tutorial .pi-tutorial-evidence {
  background: var(--pi-rule);
  border: 1px solid var(--pi-rule);
  border-radius: var(--pi-radius-md);
}

.pi-page--tutorial .pi-tutorial-evidence h3 {
  margin-top: 0.55rem;
}

.pi-page--tutorial .pi-tutorial-boundaries {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 2rem;
}

.pi-page--tutorial .pi-tutorial-boundaries > div {
  background: var(--pi-paper);
  border: 1px solid var(--pi-rule);
  border-radius: var(--pi-radius-md);
  padding: clamp(1.25rem, 3vw, 1.75rem);
}

.pi-page--tutorial .pi-tutorial-boundaries__mark {
  align-items: center;
  border-radius: 50%;
  display: flex;
  font-family: var(--pi-font-data);
  height: 2rem;
  justify-content: center;
  margin: 0 0 0.9rem;
  width: 2rem;
}

.pi-page--tutorial .pi-tutorial-boundaries__mark--yes {
  background: var(--pi-surface-muted);
  color: var(--pi-green-650);
}

.pi-page--tutorial .pi-tutorial-boundaries__mark--no {
  background: var(--pi-action-risk-surface);
  color: var(--pi-red-650);
}

.pi-page--tutorial .pi-tutorial-boundaries ul {
  color: var(--pi-ink-650);
  line-height: 1.65;
  margin: 0.9rem 0 0;
  padding-left: 1.15rem;
}

.pi-page--tutorial .pi-tutorial-boundaries li + li {
  margin-top: 0.55rem;
}

.pi-page--tutorial .pi-tutorial-stage--checkpoint {
  border-bottom: 0;
  padding-bottom: 0;
}

.pi-page--tutorial .pi-tutorial-final-checklist {
  display: grid;
  gap: 0.85rem;
  list-style: none;
  margin: 2rem 0 0;
  padding: 0;
}

.pi-page--tutorial .pi-tutorial-final-checklist li {
  color: var(--pi-ink-900);
  display: grid;
  gap: 0.8rem;
  grid-template-columns: 1.25rem 1fr;
  line-height: 1.6;
}

.pi-page--tutorial .pi-tutorial-final-checklist li::before {
  color: var(--pi-green-650);
  content: "✓";
  font-family: var(--pi-font-data);
  font-weight: 600;
}

.pi-page--tutorial .pi-tutorial-note--disclaimer {
  border-left-color: var(--pi-blue-600);
}

.pi-page--tutorial .pi-tutorial-next {
  align-items: center;
  background: var(--pi-surface-inverse);
  border-radius: var(--pi-radius-lg);
  display: flex;
  gap: 2rem;
  justify-content: space-between;
  margin-top: 3rem;
  padding: clamp(1.5rem, 4vw, 2.5rem);
}

.pi-page--tutorial .pi-tutorial-next h3 {
  color: var(--pi-text-inverse-strong);
  font-family: var(--pi-font-display);
  font-size: clamp(1.55rem, 3vw, 2.15rem);
  margin-top: 0.55rem;
}

.pi-page--tutorial .pi-tutorial-next p:not(.pi-eyebrow) {
  color: var(--pi-text-inverse-muted);
  max-width: 620px;
}

.pi-page--tutorial .pi-tutorial-next .pi-button {
  flex: 0 0 auto;
}

@media (max-width: 991.98px) {
  .pi-page--tutorial .pi-tutorial-hero {
    grid-template-columns: 1fr;
  }

  .pi-page--tutorial .pi-tutorial-brief {
    max-width: 680px;
  }

  .pi-page--tutorial .pi-tutorial-layout {
    grid-template-columns: 1fr;
  }

  .pi-page--tutorial .pi-tutorial-nav {
    background: var(--pi-paper);
    border: 1px solid var(--pi-rule);
    border-radius: var(--pi-radius-md);
    padding: 1rem;
    position: static;
  }

  .pi-page--tutorial .pi-tutorial-nav__list {
    border-left: 0;
    gap: 0.25rem 1rem;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .pi-page--tutorial .pi-tutorial-nav a {
    border-left: 0;
    border-radius: var(--pi-radius-sm);
    margin-left: 0;
    padding: 0.65rem;
  }

  .pi-page--tutorial .pi-tutorial-nav a:hover,
  .pi-page--tutorial .pi-tutorial-nav a:focus {
    background: var(--pi-surface-muted);
  }
}

@media (max-width: 767.98px) {
  .pi-page--tutorial .pi-tutorial-definition-grid,
  .pi-page--tutorial .pi-tutorial-comparison,
  .pi-page--tutorial .pi-tutorial-methods,
  .pi-page--tutorial .pi-tutorial-evidence,
  .pi-page--tutorial .pi-tutorial-boundaries {
    grid-template-columns: 1fr;
  }

  .pi-page--tutorial .pi-tutorial-method--recommended {
    grid-column: auto;
  }

  .pi-page--tutorial .pi-tutorial-next {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 575.98px) {
  .pi-page--tutorial .pi-tutorial-hero h1 {
    font-size: clamp(2.45rem, 13vw, 3.3rem);
  }

  .pi-page--tutorial .pi-tutorial-hero__actions,
  .pi-page--tutorial .pi-tutorial-hero__actions .pi-button,
  .pi-page--tutorial .pi-tutorial-action .pi-button,
  .pi-page--tutorial .pi-tutorial-next .pi-button {
    width: 100%;
  }

  .pi-page--tutorial .pi-tutorial-nav__list {
    grid-template-columns: 1fr;
  }

  .pi-page--tutorial .pi-tutorial-method dl > div {
    gap: 0.25rem;
    grid-template-columns: 1fr;
  }
}