:root {
  --tutorial-hero-width: 880px;
  --tutorial-route-width: 920px;
  --tutorial-line-size: 2px;
  --tutorial-marker-size: 74px;
  --tutorial-dot-size: 11px;
}

.tutorial-hero {
  overflow-x: clip;
  background: var(--color-bg);
  color: var(--color-text);
  padding-top: clamp(54px, 8vw, 96px);
  padding-bottom: clamp(52px, 8vw, 88px);
  text-align: center;
}

.tutorial-hero-copy {
  max-width: var(--tutorial-hero-width);
  margin-inline: auto;
}

.tutorial-hero h1 {
  max-width: var(--tutorial-hero-width);
  margin-inline: auto;
  font-size: clamp(34px, 3.6vw, 48px);
}

.tutorial-lead {
  max-width: 720px;
  margin: 0 auto;
  color: var(--color-text-muted);
  font-size: clamp(16px, 1.6vw, 19px);
  line-height: 1.8;
}

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

.tutorial-route {
  position: relative;
  display: grid;
  max-width: var(--tutorial-route-width);
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin: 56px auto 0;
  border-radius: var(--radius-large);
  background: var(--color-panel-cool);
  padding: 18px;
  box-shadow: var(--shadow-small);
}

.tutorial-route::before {
  position: absolute;
  top: 34px;
  right: 12%;
  left: 12%;
  height: var(--tutorial-line-size);
  background: var(--color-illustration-ridge-near);
  content: "";
}

.tutorial-route a {
  position: relative;
  z-index: 1;
  display: flex;
  min-height: 72px;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 10px;
  border-radius: var(--radius-medium);
  color: var(--color-text-muted);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  transition: background var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
}

.tutorial-route a:hover {
  background: var(--color-bg);
  color: var(--color-accent-dark);
  transform: translateY(-2px);
}

.tutorial-route-dot {
  width: var(--tutorial-dot-size);
  height: var(--tutorial-dot-size);
  flex-shrink: 0;
  border-radius: var(--radius-pill);
  background: var(--color-accent);
  box-shadow: 0 0 0 7px var(--color-panel-cool);
}

.tutorial-prose {
  padding-top: 8px;
}

.tutorial-chapter {
  scroll-margin-top: 88px;
  padding-top: 48px;
  padding-bottom: 48px;
}

.tutorial-chapter + .tutorial-chapter {
  border-top: 1px solid var(--color-border);
}

.step-heading {
  display: grid;
  grid-template-columns: var(--tutorial-marker-size) minmax(0, 1fr);
  gap: 22px;
  align-items: start;
  margin-bottom: 24px;
}

.step-heading .eyebrow {
  margin-bottom: 6px;
}

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

.step-marker {
  display: inline-flex;
  min-height: 38px;
  max-width: 100%;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-pill);
  background: var(--color-accent);
  color: var(--color-text);
  padding: 8px 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  line-height: 1.3;
  text-align: center;
  box-shadow: var(--shadow-small);
}

.tutorial-chapter p {
  color: var(--color-text-muted);
}

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

.check-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
  margin-top: 28px;
  margin-bottom: 30px;
}

.check-grid .card {
  box-shadow: var(--shadow-small);
}

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

.check-grid p:last-child {
  margin-bottom: 0;
}

@media (max-width: 768px) {
  .tutorial-hero h1 {
    font-size: clamp(26px, 7vw, 30px);
  }

  .tutorial-route {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .tutorial-route::before {
    display: none;
  }

  .tutorial-route a {
    background: var(--color-bg);
    box-shadow: var(--shadow-small);
  }

  .tutorial-route-dot {
    box-shadow: none;
  }

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

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

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

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

  .step-marker {
    width: fit-content;
  }

  .tutorial-chapter {
    padding-top: 38px;
    padding-bottom: 38px;
  }
}

@media (max-width: 360px) {
  .tutorial-route {
    grid-template-columns: minmax(0, 1fr);
  }

  .tutorial-route a {
    min-height: 58px;
    flex-direction: row;
  }
}