.tutorial-hero {
  position: relative;
  padding-top: clamp(46px, 7vw, 82px);
  padding-bottom: clamp(44px, 6vw, 72px);
  overflow: hidden;
}

.tutorial-hero::before {
  position: absolute;
  top: -24%;
  right: -8%;
  width: min(56vw, 720px);
  aspect-ratio: 1;
  border-radius: var(--radius-pill);
  background: radial-gradient(circle, var(--color-accent-soft), transparent 68%);
  content: "";
  pointer-events: none;
}

.tutorial-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.94fr) minmax(420px, 0.78fr);
  gap: clamp(34px, 6vw, 74px);
  align-items: center;
}

.tutorial-hero-copy {
  position: relative;
  z-index: 2;
  min-width: 0;
}

.tutorial-hero h1 {
  max-width: 680px;
  margin-top: 20px;
  margin-bottom: 18px;
}

.tutorial-hero-lead {
  max-width: 650px;
  margin-bottom: 24px;
  font-size: 17px;
}

.tutorial-route {
  position: relative;
  min-width: 0;
  padding: 18px;
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background:
    linear-gradient(var(--color-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-grid) 1px, transparent 1px),
    var(--color-panel);
  background-size: 26px 26px;
  box-shadow: var(--shadow-panel);
}

.tutorial-route-head,
.tutorial-route-foot {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  color: var(--color-text-muted);
  font-size: 11px;
}

.tutorial-route-map {
  width: 100%;
  height: auto;
  margin: 8px 0 2px;
  color: var(--color-accent);
}

.tutorial-route-branch {
  stroke: var(--color-text-muted);
  stroke-dasharray: 4 7;
}

.tutorial-route-points {
  position: absolute;
  inset: 68px 30px auto;
  display: grid;
  margin: 0;
  padding: 0;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 8px;
  list-style: none;
}

.tutorial-route-points li {
  display: flex;
  min-width: 0;
  align-items: center;
  gap: 6px;
  color: var(--color-text);
  font-family: var(--font-mono);
  font-size: 11px;
  writing-mode: vertical-rl;
}

.tutorial-route-points li:nth-child(even) {
  margin-top: 92px;
}

.tutorial-route-points span {
  color: var(--color-accent);
  font-weight: 800;
}

.tutorial-document {
  position: relative;
}

.tutorial-content {
  max-width: var(--reading-max);
  margin-inline: auto;
}

.tutorial-content > .callout:first-child {
  margin-top: 0;
  margin-bottom: 42px;
}

.tutorial-step {
  position: relative;
  display: grid;
  grid-template-columns: 58px minmax(0, 1fr);
  gap: 20px;
  padding-bottom: clamp(52px, 7vw, 82px);
}

.tutorial-step:last-of-type {
  padding-bottom: 0;
}

.tutorial-step::before {
  position: absolute;
  top: 48px;
  bottom: 0;
  left: 28px;
  width: 1px;
  background: var(--color-border);
  content: "";
}

.tutorial-step:last-of-type::before {
  display: none;
}

.tutorial-step-marker {
  position: relative;
  z-index: 2;
  display: inline-flex;
  width: 56px;
  height: 40px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-accent);
  background: var(--color-panel-raised);
  box-shadow: var(--shadow-card);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 800;
}

.tutorial-step-body {
  min-width: 0;
}

.tutorial-step-body h2 {
  margin-bottom: 18px;
}

.tutorial-step-body h3 {
  font-size: 19px;
}

.tutorial-inline-action {
  display: flex;
  margin-top: 24px;
  padding: 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-panel);
  align-items: center;
  gap: 14px;
}

.tutorial-inline-action span {
  color: var(--color-text-muted);
  font-size: 13px;
}

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

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

.platform-instruction > :last-child {
  margin-bottom: 0;
}

.platform-instruction-head {
  display: flex;
  margin-bottom: 14px;
  align-items: center;
  gap: 12px;
}

.platform-instruction-head h3 {
  margin-bottom: 0;
}

.platform-letter {
  display: inline-flex;
  width: 38px;
  height: 38px;
  flex-shrink: 0;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-accent);
  background: var(--color-panel-raised);
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 800;
}

.verification-strip {
  display: flex;
  margin-top: 24px;
  padding: 15px 17px;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 20px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-panel);
}

.verification-strip span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 12px;
}

@media (max-width: 980px) {
  .tutorial-hero-grid {
    grid-template-columns: minmax(0, 1fr) minmax(360px, 0.72fr);
    gap: 30px;
  }

  .tutorial-route-points {
    inset-inline: 22px;
  }
}

@media (max-width: 768px) {
  .tutorial-hero-grid {
    grid-template-columns: 1fr;
  }

  .tutorial-route {
    display: none;
  }

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

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

  .tutorial-step {
    grid-template-columns: 46px minmax(0, 1fr);
    gap: 14px;
  }

  .tutorial-step-marker {
    width: 44px;
    height: 38px;
  }

  .tutorial-step::before {
    left: 21px;
  }
}

@media (max-width: 520px) {
  .tutorial-hero-lead {
    font-size: 15px;
  }

  .tutorial-step {
    display: block;
  }

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

  .tutorial-step-marker {
    margin-bottom: 15px;
  }

  .tutorial-inline-action {
    align-items: stretch;
    flex-direction: column;
  }

  .tutorial-inline-action .btn {
    width: 100%;
  }

  .platform-instruction {
    padding: 18px;
  }

  .verification-strip {
    align-items: flex-start;
    flex-direction: column;
  }
}