:root {
  --tutorial-line: var(--color-border);
  --tutorial-pattern: var(--color-accent-soft);
  --tutorial-route-bg: var(--color-panel-glass);
}

.tutorial-hero {
  padding-top: 82px;
  padding-bottom: 76px;
}

.tutorial-hero::before {
  position: absolute;
  top: 12%;
  right: -8%;
  width: 46%;
  height: 76%;
  background-image: radial-gradient(var(--tutorial-pattern) 1px, transparent 1px);
  background-size: 14px 14px;
  mask-image: linear-gradient(to left, transparent, black 32%, black 68%, transparent);
  content: "";
  pointer-events: none;
  transform: skewY(-6deg);
}

.tutorial-hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(340px, 0.72fr);
  gap: clamp(46px, 8vw, 104px);
  align-items: center;
}

.tutorial-hero-copy {
  max-width: 720px;
}

.tutorial-hero h1 {
  max-width: 720px;
}

.tutorial-lead {
  max-width: 680px;
  color: var(--color-text-muted);
  font-size: clamp(17px, 1.5vw, 20px);
  line-height: 1.8;
}

.tutorial-actions {
  display: flex;
  margin-top: 30px;
  gap: 12px;
  flex-wrap: wrap;
}

.tutorial-facts {
  display: flex;
  margin-top: 28px;
  gap: 10px;
  flex-wrap: wrap;
}

.tutorial-facts > span {
  display: inline-flex;
  min-height: 32px;
  padding: 5px 11px;
  align-items: center;
  gap: 8px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-small);
  background: var(--color-panel);
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 11px;
}

.tutorial-route {
  position: relative;
  border: 1px solid var(--color-success);
  border-radius: var(--radius);
  background: var(--tutorial-route-bg);
  box-shadow: var(--shadow-success), var(--shadow-float);
  transform: rotate(0.8deg);
}

.tutorial-route::after {
  position: absolute;
  right: 22px;
  bottom: -22px;
  width: 56%;
  height: 42px;
  z-index: -1;
  background-image: radial-gradient(var(--color-accent) 1px, transparent 1px);
  background-size: 9px 9px;
  content: "";
  transform: skewX(-18deg);
}

.tutorial-route-head {
  display: flex;
  min-height: 46px;
  padding: 0 16px;
  align-items: center;
  gap: 7px;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text-muted);
  font-size: 11px;
}

.tutorial-route-head .mono {
  margin-left: 6px;
}

.tutorial-route-list {
  margin: 0;
  padding: 20px;
  list-style: none;
}

.tutorial-route-list li {
  position: relative;
  display: grid;
  min-height: 74px;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 14px;
  align-items: center;
}

.tutorial-route-list li:not(:last-child)::after {
  position: absolute;
  top: 51px;
  bottom: -17px;
  left: 20px;
  width: 1px;
  background: var(--tutorial-line);
  content: "";
}

.tutorial-route-index {
  display: inline-flex;
  width: 42px;
  height: 42px;
  z-index: 1;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-small);
  background: var(--color-panel-raised);
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 11px;
}

.tutorial-route-list li:nth-child(2) .tutorial-route-index,
.tutorial-route-list li:nth-child(4) .tutorial-route-index {
  color: var(--color-success);
}

.tutorial-route-list li:nth-child(3) .tutorial-route-index {
  color: var(--color-violet);
}

.tutorial-route-list strong,
.tutorial-route-list small {
  display: block;
}

.tutorial-route-list strong {
  font-weight: 400;
}

.tutorial-route-list small {
  margin-top: 2px;
  line-height: 1.5;
}

.tutorial-platform-note {
  position: relative;
  z-index: 2;
  max-width: 980px;
  margin-top: 72px;
}

.tutorial-flow {
  position: relative;
  padding-bottom: var(--section-space);
}

.tutorial-flow > .toc {
  top: 12px;
  margin-bottom: 74px;
}

.tutorial-chapter {
  display: grid;
  padding-top: 58px;
  padding-bottom: 74px;
  grid-template-columns: minmax(140px, 0.24fr) minmax(0, 1fr);
  gap: clamp(34px, 7vw, 92px);
  border-top: 1px solid var(--color-border);
  scroll-margin-top: 84px;
}

.tutorial-step-label {
  display: flex;
  height: fit-content;
  padding-top: 7px;
  flex-direction: column;
  gap: 8px;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
}

.tutorial-step-label span:first-child {
  color: var(--color-accent);
}

.tutorial-chapter:nth-of-type(3n) .tutorial-step-label span:first-child {
  color: var(--color-success);
}

.tutorial-chapter:nth-of-type(3n + 1) .tutorial-step-label span:first-child {
  color: var(--color-violet);
}

.tutorial-chapter-body {
  max-width: 820px;
}

.tutorial-chapter-body > h2:first-child {
  margin-top: 0;
  padding-top: 0;
}

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

.tutorial-chapter-body h3 {
  padding-left: 16px;
  border-left: 2px solid var(--color-accent);
  font-size: 22px;
}

.tutorial-chapter-body h3:nth-of-type(2) {
  border-left-color: var(--color-success);
}

.tutorial-chapter-body .callout {
  margin-top: 34px;
  margin-bottom: 34px;
}

.tutorial-checkline {
  display: grid;
  margin-top: 36px;
  padding: 20px 22px;
  grid-template-columns: minmax(150px, 0.28fr) minmax(0, 1fr);
  gap: 24px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-panel);
  box-shadow: var(--shadow-success);
}

.tutorial-checkline strong {
  color: var(--color-success);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 400;
}

.tutorial-checkline p {
  margin-bottom: 0;
}

.tutorial-chapter-final {
  padding-bottom: 0;
}

.tutorial-summary {
  display: grid;
  margin-top: 42px;
  grid-template-columns: minmax(190px, 0.6fr) minmax(0, 1fr);
  gap: 34px;
  align-items: start;
  box-shadow: var(--shadow-violet);
}

.tutorial-summary .mono {
  display: block;
  margin-bottom: 10px;
  color: var(--color-violet);
  font-size: 11px;
  letter-spacing: 0.08em;
}

.tutorial-summary h3 {
  padding-left: 0;
  border-left: 0;
}

.tutorial-summary ul {
  margin-bottom: 0;
}

.tutorial-summary li + li {
  margin-top: 8px;
}

@media (max-width: 960px) {
  .tutorial-hero-grid {
    grid-template-columns: minmax(0, 1fr) minmax(300px, 0.72fr);
    gap: 42px;
  }

  .tutorial-chapter {
    grid-template-columns: 120px minmax(0, 1fr);
    gap: 34px;
  }
}

@media (max-width: 768px) {
  .tutorial-hero {
    padding-top: 58px;
    padding-bottom: 62px;
  }

  .tutorial-hero-grid {
    grid-template-columns: 1fr;
  }

  .tutorial-route {
    max-width: 520px;
    transform: none;
  }

  .tutorial-platform-note {
    margin-top: 56px;
  }

  .tutorial-flow > .toc {
    margin-bottom: 44px;
  }

  .tutorial-chapter {
    padding-top: 48px;
    padding-bottom: 58px;
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .tutorial-step-label {
    padding-top: 0;
    flex-direction: row;
  }

  .tutorial-checkline,
  .tutorial-summary {
    grid-template-columns: 1fr;
    gap: 14px;
  }
}

@media (max-width: 640px) {
  .tutorial-hero::before {
    right: -32%;
    width: 94%;
  }

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

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

  .tutorial-facts {
    align-items: flex-start;
    flex-direction: column;
  }

  .tutorial-route-list {
    padding: 16px;
  }

  .tutorial-platform-note {
    margin-top: 46px;
  }

  .tutorial-chapter-body h3 {
    font-size: 20px;
  }

  .tutorial-checkline {
    padding: 18px;
  }
}