.tutorial-hero {
  padding-top: clamp(48px, 7vw, 82px);
  padding-bottom: clamp(54px, 7vw, 84px);
}

.tutorial-hero__copy {
  max-width: 800px;
  margin-inline: auto;
  text-align: center;
}

.tutorial-hero h1 {
  max-width: 760px;
  margin: 20px auto 16px;
  font-size: clamp(34px, 4vw, 48px);
}

.tutorial-hero__lede {
  max-width: 720px;
  margin: 0 auto 24px;
  color: var(--color-muted);
  font-size: clamp(16px, 1.8vw, 18px);
}

.tutorial-hero__actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
}

.setup-route {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  max-width: 980px;
  margin: clamp(42px, 6vw, 68px) auto 0;
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-border);
  box-shadow: var(--shadow-frame);
}

.setup-route__item {
  display: flex;
  min-height: 104px;
  align-items: center;
  gap: 13px;
  padding: 18px;
  color: var(--color-text);
  background: var(--color-bg);
  text-decoration: none;
  transition: color var(--transition-fast), background-color var(--transition-fast);
}

.setup-route__item:hover {
  color: var(--color-accent-dark);
  background: var(--color-panel);
}

.setup-route__number {
  display: inline-flex;
  width: 34px;
  height: 34px;
  flex: 0 0 34px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-sm);
  color: var(--color-accent-dark);
  background: var(--color-bg);
  font-size: 12px;
  font-weight: 700;
}

.setup-route__item strong,
.setup-route__item small {
  display: block;
}

.setup-route__item strong {
  font-size: 14px;
}

.setup-route__item small {
  margin-top: 3px;
  color: var(--color-muted);
  font-size: 12px;
  line-height: 1.45;
}

.section-heading {
  max-width: 760px;
  margin-bottom: 30px;
}

.section-heading h2 {
  margin-top: 14px;
}

.section-heading p {
  color: var(--color-muted);
  font-size: 16px;
}

.platform-start {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-bottom: 26px;
  padding: 16px 18px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-bg);
}

.platform-start__label {
  flex: 0 0 auto;
  margin: 0;
  color: var(--color-text);
  font-weight: 650;
}

.platform-start .platform-chip {
  min-height: 36px;
}

.prep-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 28px;
}

.prep-grid .card {
  position: relative;
  padding-top: 52px;
}

.prep-grid__index {
  position: absolute;
  top: 20px;
  left: 24px;
  color: var(--color-accent-dark);
  font-size: 12px;
  font-weight: 700;
}

.prep-grid h3 {
  font-size: 20px;
}

.prep-grid p {
  color: var(--color-muted);
}

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

.tutorial-document {
  position: relative;
}

.tutorial-document > .toc-tabs {
  margin-bottom: clamp(42px, 6vw, 68px);
}

.tutorial-article {
  max-width: 940px;
  margin-inline: auto;
}

.tutorial-step {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  gap: clamp(18px, 4vw, 42px);
  padding-bottom: clamp(66px, 9vw, 108px);
  scroll-margin-top: calc(var(--header-height) + 88px);
}

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

.tutorial-step__marker {
  position: relative;
  display: flex;
  justify-content: center;
}

.tutorial-step__marker::after {
  content: "";
  position: absolute;
  top: 48px;
  bottom: calc(var(--section-space) * -1);
  left: 50%;
  width: 1px;
  background: var(--color-border);
}

.tutorial-step:last-child .tutorial-step__marker::after {
  display: none;
}

.tutorial-step__marker span {
  position: sticky;
  top: calc(var(--header-height) + 82px);
  display: inline-flex;
  width: 46px;
  height: 46px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-md);
  color: var(--color-bg);
  background: var(--color-accent);
  box-shadow: var(--shadow-frame);
  font-size: 13px;
  font-weight: 700;
}

.tutorial-step__body {
  max-width: 800px;
}

.tutorial-step__eyebrow {
  margin-bottom: 8px;
  color: var(--color-accent-dark);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .06em;
}

.tutorial-step__body h2 {
  margin-bottom: 24px;
  scroll-margin-top: calc(var(--header-height) + 90px);
}

.tutorial-step__body > p {
  color: var(--color-muted);
  font-size: 16px;
  line-height: 1.85;
}

.tutorial-step__body > p a {
  font-weight: 600;
}

.step-check {
  margin: 28px 0;
  padding: 22px 24px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-panel);
}

.step-check strong {
  display: block;
  margin-bottom: 10px;
}

.step-check ul {
  margin: 0;
  padding-left: 20px;
  color: var(--color-muted);
}

.step-check li + li {
  margin-top: 6px;
}

.mode-compare {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  margin: 30px 0;
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-border);
}

.mode-compare article {
  padding: 22px;
  background: var(--color-bg);
}

.mode-compare h3 {
  margin-top: 15px;
  font-size: 19px;
}

.mode-compare p {
  color: var(--color-muted);
}

.connection-order {
  margin: 30px 0;
  padding: clamp(22px, 4vw, 30px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-panel);
}

.connection-order h3 {
  margin-bottom: 18px;
  font-size: 20px;
}

.connection-order ol {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  counter-reset: connection-step;
  list-style: none;
}

.connection-order li {
  position: relative;
  display: grid;
  gap: 3px;
  min-height: 48px;
  padding-left: 58px;
  counter-increment: connection-step;
}

.connection-order li::before {
  content: counter(connection-step);
  position: absolute;
  top: 0;
  left: 0;
  display: inline-flex;
  width: 38px;
  height: 38px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  color: var(--color-accent-dark);
  background: var(--color-bg);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
}

.connection-order span {
  color: var(--color-muted);
}

.verify-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin: 30px 0;
}

.verify-card {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 20px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-bg);
  box-shadow: var(--shadow-frame);
}

.verify-card .status-dot {
  margin-top: 7px;
  background: var(--color-success);
  box-shadow: none;
}

.verify-card h3 {
  margin-bottom: 7px;
  font-size: 17px;
}

.verify-card p {
  color: var(--color-muted);
  font-size: 14px;
}

.tutorial-step--support .data-table {
  min-width: 720px;
}

.next-reading {
  display: grid;
  grid-template-columns: minmax(260px, .8fr) minmax(0, 1.4fr);
  gap: clamp(34px, 7vw, 84px);
  align-items: start;
}

.next-reading__copy h2 {
  margin-top: 14px;
}

.next-reading__copy p {
  color: var(--color-muted);
  font-size: 16px;
}

.next-reading__links {
  display: grid;
  gap: 10px;
}

.next-reading__card {
  display: grid;
  gap: 6px;
  padding: 20px 22px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  background: var(--color-bg);
  box-shadow: var(--shadow-frame);
  text-decoration: none;
  transition: border-color var(--transition-fast), transform var(--transition-fast);
}

.next-reading__card:hover {
  transform: translateX(3px);
  color: var(--color-text);
  border-color: var(--color-accent);
}

.next-reading__card .mono {
  color: var(--color-accent-dark);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .08em;
}

.next-reading__card strong {
  font-size: 18px;
}

.next-reading__card p {
  margin: 0;
  color: var(--color-muted);
}

@media (max-width: 900px) {
  .setup-route {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .prep-grid,
  .mode-compare,
  .verify-grid {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 700px) {
  .platform-start {
    align-items: flex-start;
    flex-direction: column;
  }

  .tutorial-step {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .tutorial-step__marker {
    justify-content: flex-start;
  }

  .tutorial-step__marker::after {
    display: none;
  }

  .tutorial-step__marker span {
    position: static;
    width: 42px;
    height: 42px;
  }

  .tutorial-step__body > p {
    font-size: 15px;
  }
}

@media (max-width: 768px) {
  .tutorial-hero h1 {
    font-size: clamp(24px, 7vw, 30px);
  }
}

@media (max-width: 520px) {
  .tutorial-hero__actions {
    align-items: stretch;
    flex-direction: column;
  }

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

  .setup-route {
    grid-template-columns: 1fr;
  }

  .setup-route__item {
    min-height: 84px;
  }

  .platform-start .cluster,
  .platform-start .platform-chip {
    width: 100%;
  }

  .step-check,
  .connection-order {
    padding: 18px;
  }

  .mode-compare article,
  .verify-card,
  .next-reading__card {
    padding: 18px;
  }
}