.tutorial-hero {
  position: relative;
  border-bottom: 1px solid var(--color-border-soft);
  background:
    radial-gradient(circle at top right, var(--color-glow), transparent 48%),
    var(--color-bg);
}

.tutorial-hero::before {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(var(--color-dot) 1px, transparent 1.5px);
  background-size: 28px 28px;
  content: "";
  pointer-events: none;
}

.tutorial-hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(340px, .88fr);
  align-items: center;
  gap: 64px;
}

.tutorial-hero-copy {
  max-width: 680px;
}

.tutorial-hero-copy h1 {
  margin-top: 18px;
}

.tutorial-lead {
  max-width: 630px;
  font-size: 18px;
  line-height: 1.85;
}

.tutorial-path {
  padding: 30px;
}

.tutorial-path-label {
  margin-bottom: 20px;
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  text-transform: uppercase;
}

.tutorial-path-list {
  display: grid;
  gap: 0;
  padding: 0;
  margin: 0;
  list-style: none;
  counter-reset: tutorial-path;
}

.tutorial-path-list li {
  position: relative;
  display: grid;
  grid-template-columns: minmax(72px, .4fr) minmax(0, 1fr);
  gap: 18px;
  padding: 16px 0 16px 31px;
  border-bottom: 1px solid var(--color-border-soft);
  counter-increment: tutorial-path;
}

.tutorial-path-list li::before {
  position: absolute;
  top: 24px;
  left: 0;
  width: 10px;
  height: 10px;
  border: 2px solid var(--color-accent-dark);
  border-radius: var(--radius-pill);
  background: var(--color-panel);
  content: "";
  box-shadow: 0 0 16px var(--color-button-glow);
}

.tutorial-path-list li::after {
  position: absolute;
  top: 35px;
  bottom: -8px;
  left: 4px;
  width: 1px;
  background: var(--color-border);
  content: "";
}

.tutorial-path-list li:last-child {
  border-bottom: 0;
}

.tutorial-path-list li:last-child::after {
  display: none;
}

.tutorial-path-list span {
  color: var(--color-text-muted);
  font-size: 14px;
}

.tutorial-path-list strong {
  font-size: 15px;
}

.tutorial-path-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 22px;
}

.tutorial-prose {
  width: 100%;
  max-width: calc(var(--reading-width) + (var(--gutter) * 2));
  margin-inline: auto;
  padding: 28px var(--gutter) var(--section-space);
}

.tutorial-prose > .toc-tabs {
  top: 10px;
  margin-bottom: 42px;
}

.tutorial-content {
  display: grid;
  gap: 28px;
}

.tutorial-step {
  padding: 38px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  background: var(--color-panel);
  box-shadow: inset 0 1px 0 var(--color-glass-border);
}

.tutorial-step h2 {
  margin-top: 0;
  font-size: clamp(28px, 4vw, 40px);
}

.tutorial-step h3 {
  margin-top: 0;
  font-size: 22px;
}

.tutorial-step-label {
  margin-bottom: 9px;
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
}

.tutorial-step pre {
  margin: 24px 0;
}

.tutorial-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  padding-top: 10px;
}

.platform-instruction {
  padding: 26px 0;
  border-top: 1px solid var(--color-border-soft);
}

.platform-instruction:first-of-type {
  margin-top: 30px;
}

.platform-instruction h3 {
  display: inline-flex;
  min-height: 38px;
  align-items: center;
  padding: 6px 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  background: var(--color-panel-raised);
  color: var(--color-text);
}

.tutorial-step .callout {
  margin-top: 26px;
}

.tutorial-finish {
  margin-top: 28px;
  padding: 25px;
  background: var(--color-panel-raised);
}

.tutorial-finish-label {
  margin-bottom: 8px;
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
}

@media (max-width: 920px) {
  .tutorial-hero-grid {
    grid-template-columns: 1fr;
    gap: 42px;
  }

  .tutorial-path {
    max-width: 680px;
  }
}

@media (max-width: 640px) {
  .tutorial-hero-grid {
    gap: 34px;
  }

  .tutorial-lead {
    font-size: 16px;
  }

  .tutorial-path,
  .tutorial-step {
    padding: 24px;
  }

  .tutorial-path-list li {
    grid-template-columns: 1fr;
    gap: 2px;
  }

  .tutorial-prose {
    padding-top: 20px;
  }

  .tutorial-prose > .toc-tabs {
    margin-bottom: 30px;
  }

  .tutorial-content {
    gap: 20px;
  }

  .tutorial-actions,
  .tutorial-actions .button {
    width: 100%;
  }

  .platform-instruction {
    padding: 22px 0;
  }
}