.tutorial-hero {
  max-width: 100%;
  padding-top: clamp(56px, 8vw, 96px);
  padding-bottom: clamp(48px, 7vw, 80px);
  overflow-x: clip;
  border-bottom: 1px solid var(--color-line);
}

.tutorial-hero-inner {
  display: grid;
  gap: clamp(34px, 6vw, 64px);
}

.tutorial-hero-copy {
  max-width: 850px;
  margin-inline: auto;
  text-align: center;
}

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

.tutorial-hero-copy > p {
  max-width: 760px;
  margin-right: auto;
  margin-bottom: 26px;
  margin-left: auto;
  color: var(--color-muted);
  font-size: clamp(17px, 2vw, 20px);
}

.tutorial-actions {
  justify-content: center;
}

.tutorial-facts {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  margin-top: 20px;
}

.setup-route-visual {
  width: min(760px, 100%);
  max-width: 100%;
  margin-inline: auto;
  padding: 18px 24px 12px;
  overflow-x: clip;
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-sm);
  background: var(--color-panel);
  box-shadow: var(--shadow-panel);
}

.setup-route-visual svg {
  width: 100%;
  height: auto;
  color: var(--color-accent);
}

.setup-route-line {
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-dasharray: 5 7;
}

.setup-route-node {
  fill: var(--color-panel);
  stroke: var(--color-text);
  stroke-width: 3;
}

.setup-route-node-accent {
  fill: var(--color-accent);
  stroke: var(--color-accent);
}

.setup-route-node-warning {
  fill: var(--color-warning);
  stroke: var(--color-warning);
}

.setup-route-labels {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 8px;
  color: var(--color-muted);
  font: 650 11px/1.3 var(--font-mono);
  text-align: center;
}

.tutorial-article {
  padding-top: clamp(42px, 7vw, 78px);
  padding-bottom: var(--section-space);
}

.tutorial-article > .toc-tabs {
  top: 8px;
}

.guide-section {
  padding-top: clamp(54px, 7vw, 82px);
  padding-bottom: clamp(28px, 4vw, 48px);
  border-top: 1px solid var(--color-line);
}

.guide-section:first-of-type {
  border-top: 0;
}

.step-heading {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: start;
  gap: 18px;
  margin-bottom: 24px;
}

.step-heading h2 {
  margin-bottom: 0;
}

.step-heading .kicker {
  margin-bottom: 10px;
}

.step-mark {
  display: inline-flex;
  min-width: 58px;
  min-height: 34px;
  align-items: center;
  justify-content: center;
  padding: 7px 10px;
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-xs);
  background: var(--color-panel);
  color: var(--color-accent-deep);
  font: 700 12px/1 var(--font-mono);
  box-shadow: var(--shadow-card);
}

.guide-section > p,
.platform-note p {
  font-size: 16px;
  line-height: 1.85;
}

.guide-next {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
  margin-top: 30px;
  padding: 20px 22px;
  border: 1px solid var(--color-line);
  border-left-color: var(--color-accent);
  border-radius: var(--radius-xs);
  background: var(--color-panel);
  box-shadow: var(--shadow-card);
}

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

.guide-next .btn {
  flex: 0 0 auto;
}

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

.platform-note {
  min-width: 0;
  padding: 26px;
  border: 1px solid var(--color-line);
  border-top-color: var(--color-accent);
  border-radius: var(--radius-sm);
  background: var(--color-panel);
  box-shadow: var(--shadow-card);
}

.platform-note:nth-child(even) {
  border-top-color: var(--color-warning);
}

.platform-note h3 {
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-line);
}

.platform-note p:last-child {
  margin-bottom: 0;
}

.tutorial-article pre {
  margin-top: 24px;
  margin-bottom: 24px;
}

.tutorial-article .promo-block {
  margin-bottom: 0;
}

@media (max-width: 768px) {
  .tutorial-hero {
    padding-top: 44px;
    padding-bottom: 48px;
  }

  .setup-route-visual {
    padding: 12px 14px 10px;
  }

  .platform-notes {
    grid-template-columns: minmax(0, 1fr);
  }

  .guide-next {
    align-items: stretch;
    flex-direction: column;
  }

  .guide-next .btn {
    width: 100%;
  }
}

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

  .tutorial-hero-copy > p {
    margin-left: 0;
  }

  .tutorial-actions,
  .tutorial-facts {
    justify-content: flex-start;
  }

  .setup-route-visual {
    display: none;
  }

  .step-heading {
    grid-template-columns: minmax(0, 1fr);
    gap: 12px;
  }

  .step-mark {
    width: max-content;
  }

  .platform-note {
    padding: 22px 18px;
  }

  .guide-next {
    padding: 18px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .setup-route-line {
    stroke-dasharray: none;
  }
}