.tutorial-hero {
  position: relative;
  overflow-x: clip;
  border-bottom: 1px solid var(--color-border);
}

.tutorial-hero::before {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(color-mix(in srgb, var(--color-text-muted) 12%, transparent) 1px, transparent 1px);
  background-size: 24px 24px;
  opacity: .7;
  pointer-events: none;
  content: "";
  mask-image: linear-gradient(to bottom, var(--color-shadow-heavy), transparent);
}

.tutorial-hero::after {
  position: absolute;
  top: -110px;
  right: -80px;
  width: 540px;
  height: 460px;
  background: radial-gradient(closest-side, var(--color-accent-12), transparent 72%);
  pointer-events: none;
  content: "";
}

.tutorial-hero-layout {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(340px, .75fr);
  align-items: center;
  gap: 64px;
  min-height: 560px;
}

.tutorial-intro {
  max-width: 720px;
}

.tutorial-intro h1 {
  max-width: 820px;
}

.tutorial-lead {
  max-width: 54ch;
  margin-bottom: 26px;
  color: var(--color-text-muted);
  font-size: 18px;
}

.tutorial-map {
  position: relative;
  overflow: hidden;
  padding: 22px;
}

.tutorial-map::after {
  position: absolute;
  right: -54px;
  bottom: -70px;
  width: 190px;
  height: 190px;
  background: radial-gradient(closest-side, var(--color-accent-08), transparent);
  pointer-events: none;
  content: "";
}

.tutorial-map-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding-bottom: 16px;
  color: var(--color-text-muted);
  border-bottom: 1px solid var(--color-border);
  font-size: 12px;
}

.tutorial-map-list {
  position: relative;
  display: grid;
  gap: 0;
  margin: 0;
  list-style: none;
}

.tutorial-map-list::before {
  position: absolute;
  top: 30px;
  bottom: 30px;
  left: 5px;
  width: 1px;
  background: var(--color-border);
  content: "";
}

.tutorial-map-list li {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 12px minmax(0, 1fr);
  align-items: center;
  gap: 15px;
  min-height: 66px;
  border-bottom: 1px solid var(--color-border-soft);
}

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

.tutorial-map-marker {
  width: 11px;
  height: 11px;
  background: var(--color-panel);
  border: 2px solid var(--color-accent);
  border-radius: 50%;
  box-shadow: 0 0 0 4px var(--color-accent-08);
}

.tutorial-map-list div {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
}

.tutorial-map-list strong {
  color: var(--color-text);
  font-size: 14px;
}

.tutorial-map-list small {
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 10px;
}

.tutorial-body {
  padding-top: 46px;
  padding-bottom: var(--section-space);
}

.tutorial-body .toc-tabs {
  top: 10px;
}

.tutorial-step {
  position: relative;
  padding-top: 34px;
  padding-bottom: 42px;
  border-bottom: 1px solid var(--color-border);
}

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

.tutorial-step h2 {
  margin-top: 0;
}

.tutorial-step-label {
  display: inline-flex;
  margin-bottom: 10px;
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .12em;
}

.tutorial-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.platform-instructions {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin: 28px 0;
}

.platform-instruction {
  min-width: 0;
  padding: 22px;
  background: var(--color-panel);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-chip);
}

.platform-instruction h3 {
  margin-top: 14px;
  font-size: 20px;
}

.platform-instruction p {
  margin-bottom: 0;
}

@media (max-width: 900px) {
  .tutorial-hero-layout {
    grid-template-columns: 1fr;
    gap: 34px;
    min-height: 0;
    padding-top: 54px;
    padding-bottom: 54px;
  }

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

@media (max-width: 768px) {
  .tutorial-lead {
    font-size: 16px;
  }

  .platform-instructions {
    grid-template-columns: 1fr;
  }

  .tutorial-body {
    padding-top: 28px;
  }

  .tutorial-step {
    padding-top: 28px;
    padding-bottom: 34px;
  }
}

@media (max-width: 520px) {
  .tutorial-map {
    padding: 17px;
  }

  .tutorial-map-list div {
    align-items: flex-start;
    flex-direction: column;
    gap: 2px;
  }

  .tutorial-map-list li {
    min-height: 72px;
  }

  .tutorial-actions .btn-primary,
  .tutorial-actions .btn-secondary {
    width: 100%;
  }

  .platform-instruction {
    padding: 18px;
  }
}