.tutorial-hero {
  position: relative;
  overflow: clip;
  padding-top: 72px;
  padding-bottom: 78px;
  border-bottom: 1px solid var(--border-soft);
  background:
    radial-gradient(720px 420px at 10% 8%, color-mix(in srgb, var(--color-panel-raised) 76%, transparent), transparent 72%),
    radial-gradient(660px 420px at 88% 52%, color-mix(in srgb, var(--color-panel) 90%, transparent), transparent 74%),
    var(--color-bg);
}

.tutorial-hero::after {
  content: '';
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: 58%;
  pointer-events: none;
  opacity: 0.48;
  background:
    linear-gradient(var(--grid-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-soft) 1px, transparent 1px);
  background-size: 38px 38px;
  mask-image: linear-gradient(transparent, var(--color-black));
}

.tutorial-hero-layout {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(360px, 0.92fr);
  align-items: center;
  gap: 68px;
}

.tutorial-hero-copy h1 {
  max-width: 11em;
  margin-top: 22px;
  margin-bottom: 24px;
}

.tutorial-lead {
  max-width: 38em;
  margin-bottom: 26px;
  color: var(--color-text-muted);
  font-size: 18px;
}

.tutorial-route-panel {
  position: relative;
  overflow: clip;
  min-height: 390px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-large);
  background:
    linear-gradient(var(--grid-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-soft) 1px, transparent 1px),
    var(--color-panel);
  background-size: 30px 30px;
  box-shadow: var(--shadow-card);
}

.tutorial-route-panel::after {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  border-radius: var(--radius-large);
  box-shadow: inset 0 1px 0 color-mix(in srgb, var(--color-wave) 8%, transparent);
}

.tutorial-route-head {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 20px 22px;
  border-bottom: 1px solid var(--border-soft);
  color: var(--color-text-muted);
  font-size: 12px;
  letter-spacing: 0.08em;
}

.tutorial-route-map {
  width: 100%;
  height: auto;
  display: block;
  margin-top: 12px;
}

.route-guide,
.route-terminal {
  fill: none;
  stroke: var(--color-wave);
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.route-guide-soft {
  stroke: var(--color-border);
  stroke-dasharray: 7 9;
}

.route-terminal {
  stroke: var(--color-text-muted);
  stroke-width: 1.2;
}

.route-halo {
  fill: color-mix(in srgb, var(--color-wave) 15%, transparent);
}

.route-point {
  fill: var(--color-wave);
}

.tutorial-route-labels {
  position: absolute;
  right: 22px;
  bottom: 18px;
  left: 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
}

.tutorial-section {
  background:
    linear-gradient(90deg, transparent, color-mix(in srgb, var(--color-panel) 30%, transparent), transparent),
    var(--color-bg);
}

.tutorial-document {
  max-width: calc(var(--reading-width) + 250px + var(--gutter) * 2);
}

.tutorial-intro {
  max-width: var(--reading-width);
  margin-inline: auto;
  padding-top: 28px;
  padding-bottom: 28px;
}

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

.tutorial-step {
  position: relative;
  display: grid;
  grid-template-columns: 104px minmax(0, 1fr);
  gap: 34px;
  padding-top: 76px;
  padding-bottom: 76px;
  border-bottom: 1px dashed var(--color-border);
}

.tutorial-step::before {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  left: 51px;
  border-left: 1px dashed var(--color-border);
}

.step-marker {
  position: sticky;
  top: calc(var(--header-height) + 94px);
  z-index: 1;
  width: 72px;
  min-height: 34px;
  align-self: start;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-pill);
  color: var(--color-bg);
  background: var(--color-accent);
  box-shadow: var(--shadow-button);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.step-body {
  min-width: 0;
  max-width: var(--reading-width);
}

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

.step-action {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 18px;
  margin-top: 28px;
  padding-top: 22px;
  border-top: 1px solid var(--border-soft);
}

.step-action span {
  color: var(--color-text-muted);
  font-size: 14px;
}

.client-guide-grid {
  display: grid;
  gap: 18px;
  margin-top: 32px;
  margin-bottom: 32px;
}

.client-guide {
  position: relative;
  padding: 28px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-medium);
  background:
    linear-gradient(145deg, color-mix(in srgb, var(--color-panel-raised) 70%, transparent), transparent 58%),
    var(--color-panel);
}

.client-guide .platform-icon {
  position: absolute;
  top: 24px;
  right: 24px;
}

.client-guide h3 {
  padding-right: 60px;
  font-size: 23px;
}

.client-guide p:last-child {
  margin-bottom: 0;
}

.tutorial-complete {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 32px;
  margin-top: 72px;
  padding: 36px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-large);
  background:
    radial-gradient(420px 170px at 85% 20%, color-mix(in srgb, var(--color-accent) 11%, transparent), transparent 74%),
    var(--color-panel-raised);
  box-shadow: var(--shadow-card);
}

.tutorial-complete h2 {
  margin-top: 0;
  margin-bottom: 14px;
  font-size: clamp(28px, 4vw, 42px);
}

.tutorial-complete p:last-child {
  margin-bottom: 0;
}

@media (max-width: 960px) {
  .tutorial-hero-layout {
    grid-template-columns: 1fr;
    gap: 46px;
  }

  .tutorial-route-panel {
    width: 100%;
    max-width: 680px;
    min-height: 0;
  }

  .tutorial-step {
    grid-template-columns: 82px minmax(0, 1fr);
    gap: 24px;
  }

  .tutorial-step::before {
    left: 35px;
  }
}

@media (max-width: 640px) {
  .tutorial-hero {
    padding-top: 48px;
    padding-bottom: 56px;
  }

  .tutorial-hero-layout {
    gap: 36px;
  }

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

  .tutorial-route-panel {
    min-height: 284px;
  }

  .tutorial-route-head {
    padding-inline: 16px;
  }

  .tutorial-route-labels {
    right: 14px;
    bottom: 12px;
    left: 14px;
    font-size: 9px;
  }

  .tutorial-step {
    grid-template-columns: 38px minmax(0, 1fr);
    gap: 14px;
    padding-top: 54px;
    padding-bottom: 54px;
  }

  .tutorial-step::before {
    left: 18px;
  }

  .step-marker {
    top: calc(var(--header-height) + 88px);
    width: 38px;
    min-height: 38px;
    overflow: hidden;
    border-radius: var(--radius-small);
    font-size: 8px;
    letter-spacing: 0;
  }

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

  .step-action .btn-primary,
  .step-action .btn-secondary {
    width: 100%;
  }

  .client-guide {
    padding: 22px;
  }

  .client-guide .platform-icon {
    top: 18px;
    right: 18px;
  }

  .client-guide h3 {
    padding-right: 54px;
  }

  .tutorial-complete {
    grid-template-columns: 1fr;
    margin-top: 54px;
    padding: 26px;
  }

  .tutorial-complete .btn-secondary {
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  .step-marker {
    position: relative;
    top: auto;
  }
}