.tutorial-hero {
  position: relative;
  overflow: clip;
  border-bottom: 1px solid var(--color-line);
  background-color: var(--color-canvas);
  background-image:
    linear-gradient(var(--hero-grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--hero-grid-line) 1px, transparent 1px);
  background-size: 48px 48px;
}

.tutorial-hero-copy {
  max-width: 820px;
  margin-inline: auto;
  text-align: center;
}

.tutorial-hero h1 {
  margin-top: 20px;
  margin-bottom: 20px;
}

.tutorial-hero .lead {
  margin-inline: auto;
}

.tutorial-hero .cta-row {
  justify-content: center;
  margin-top: 28px;
}

.tutorial-trust {
  margin-top: 26px;
}

.tutorial-route {
  position: relative;
  display: grid;
  max-width: 980px;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 14px;
  margin: 54px auto 0;
}

.tutorial-route-line {
  position: absolute;
  top: 31px;
  right: 8%;
  left: 8%;
  height: 2px;
  background: var(--color-accent);
}

.tutorial-route-node {
  position: relative;
  z-index: 1;
  display: grid;
  min-height: 112px;
  place-items: center;
  align-content: center;
  gap: 7px;
  padding: 16px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-small);
  background: var(--color-canvas);
  box-shadow: var(--shadow-panel);
}

.tutorial-route-node::before {
  width: 13px;
  height: 13px;
  border: 3px solid var(--color-canvas);
  border-radius: var(--radius-pill);
  background: var(--color-accent);
  box-shadow: 0 0 0 1px var(--color-accent);
  content: "";
}

.tutorial-route-code {
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
}

.tutorial-route-node strong {
  font-size: 15px;
}

.tutorial-shell {
  padding-top: var(--section-space);
  padding-bottom: var(--section-space);
}

.tutorial-shell .toc-tabs {
  margin-bottom: 42px;
}

.tutorial-notice {
  max-width: 920px;
  margin: 0 auto 64px;
}

.tutorial-notice p,
.client-download-note p,
.tutorial-finish p {
  margin-top: 7px;
  margin-bottom: 0;
}

.workflow-section {
  display: grid;
  grid-template-columns: minmax(130px, 190px) minmax(0, 1fr);
  gap: clamp(28px, 6vw, 76px);
  max-width: 1060px;
  margin-inline: auto;
  padding-top: 72px;
  padding-bottom: 72px;
  border-top: 1px solid var(--color-line);
}

.workflow-marker {
  position: sticky;
  top: var(--toc-offset);
  align-self: start;
  display: grid;
  gap: 8px;
  padding-top: 7px;
}

.workflow-marker::before {
  width: 38px;
  height: 6px;
  border-radius: var(--radius-pill);
  background: var(--color-accent);
  content: "";
}

.workflow-code,
.workflow-state,
.verification-key {
  font-family: var(--font-mono);
  letter-spacing: 0.08em;
}

.workflow-code {
  color: var(--color-accent);
  font-size: 12px;
  font-weight: 750;
}

.workflow-state {
  color: var(--color-muted);
  font-size: 11px;
}

.workflow-content {
  max-width: var(--reading-width);
}

.workflow-content h2 {
  margin-bottom: 26px;
}

.workflow-content p {
  color: var(--color-muted);
}

.workflow-content p strong {
  color: var(--color-ink);
}

.tutorial-actions {
  margin-top: 30px;
}

.text-link {
  margin-inline: 0.25em;
  color: var(--color-accent);
  font-weight: 750;
  text-decoration: underline;
  text-decoration-color: var(--color-line);
  text-underline-offset: 0.2em;
}

.text-link:hover,
.text-link:focus-visible {
  color: var(--color-accent-deep);
  text-decoration-color: var(--color-accent);
}

.client-guide-list {
  display: grid;
  margin-top: 36px;
  border-top: 1px solid var(--color-line);
}

.client-guide {
  padding-top: 34px;
  padding-bottom: 34px;
  border-bottom: 1px solid var(--color-line);
}

.client-guide-heading {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 18px;
}

.client-guide-heading h3 {
  margin-top: 2px;
  margin-bottom: 0;
}

.client-guide-heading .mono {
  font-size: 11px;
  letter-spacing: 0.08em;
}

.platform-letter {
  display: grid;
  width: 46px;
  height: 46px;
  flex: 0 0 auto;
  place-items: center;
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-small);
  background: var(--accent-soft);
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 17px;
  font-weight: 800;
}

.client-download-note {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 24px;
  margin-top: 34px;
}

.client-download-note .btn-secondary {
  grid-column: 2;
  grid-row: 1 / span 2;
}

.verification-sequence {
  display: grid;
  margin-top: 34px;
  margin-bottom: 36px;
  border-top: 1px solid var(--color-line);
}

.verification-item {
  display: grid;
  grid-template-columns: minmax(90px, 130px) minmax(0, 1fr);
  gap: 24px;
  padding-top: 26px;
  padding-bottom: 26px;
  border-bottom: 1px solid var(--color-line);
}

.verification-item h3 {
  margin-bottom: 8px;
  font-size: 20px;
}

.verification-item p {
  margin-bottom: 0;
}

.verification-key {
  padding-top: 4px;
  color: var(--color-accent);
  font-size: 11px;
  font-weight: 750;
}

.tutorial-finish {
  margin-top: 36px;
}

@media (max-width: 820px) {
  .tutorial-route {
    grid-template-columns: repeat(5, minmax(110px, 1fr));
    overflow-x: auto;
    padding-bottom: 10px;
    scrollbar-width: thin;
    -webkit-overflow-scrolling: touch;
  }

  .tutorial-route-line {
    right: 60px;
    left: 60px;
    min-width: 520px;
  }

  .workflow-section {
    grid-template-columns: minmax(0, 1fr);
    gap: 22px;
  }

  .workflow-marker {
    position: static;
    grid-template-columns: auto auto;
    align-items: center;
    justify-content: start;
  }

  .workflow-marker::before {
    grid-column: 1 / -1;
  }
}

@media (max-width: 640px) {
  .tutorial-hero-copy {
    text-align: left;
  }

  .tutorial-hero .lead {
    margin-inline: 0;
  }

  .tutorial-hero .cta-row {
    justify-content: flex-start;
  }

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

  .tutorial-route {
    margin-top: 40px;
  }

  .tutorial-shell {
    padding-top: 64px;
    padding-bottom: 64px;
  }

  .tutorial-shell .toc-tabs {
    margin-bottom: 32px;
  }

  .tutorial-notice {
    margin-bottom: 48px;
  }

  .workflow-section {
    padding-top: 54px;
    padding-bottom: 54px;
  }

  .client-download-note {
    grid-template-columns: minmax(0, 1fr);
  }

  .client-download-note .btn-secondary {
    grid-column: auto;
    grid-row: auto;
    width: 100%;
  }

  .verification-item {
    grid-template-columns: minmax(0, 1fr);
    gap: 8px;
  }
}

@media (max-width: 390px) {
  .tutorial-route {
    grid-template-columns: repeat(5, minmax(104px, 1fr));
  }

  .tutorial-route-node {
    padding: 13px;
  }

  .client-guide-heading {
    align-items: flex-start;
  }
}