:root {
  --tutorial-rail: var(--color-deep-line);
  --tutorial-step-surface: var(--color-hero-chip);
  --tutorial-route-glow: var(--color-accent-shadow);
}

.tutorial-hero {
  padding-top: 14px;
}

.tutorial-hero__inner {
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(360px, 0.88fr);
  min-height: 540px;
  align-items: center;
  gap: clamp(36px, 6vw, 84px);
  padding-top: clamp(48px, 7vw, 82px);
  padding-bottom: clamp(48px, 7vw, 82px);
  overflow: hidden;
  border-radius: var(--radius-card);
  background:
    radial-gradient(circle at 82% 16%, var(--color-cyan-glow), var(--color-transparent) 34%),
    radial-gradient(circle at 78% 88%, var(--color-pink-glow), var(--color-transparent) 38%),
    var(--color-deep);
  color: var(--color-hero-muted);
}

.tutorial-hero__copy {
  min-width: 0;
}

.tutorial-hero .eyebrow {
  border-color: var(--color-cyan);
  color: var(--color-hero-muted);
}

.tutorial-hero h1 {
  max-width: 650px;
  margin-bottom: 22px;
  color: var(--color-white);
}

.tutorial-hero__lead {
  max-width: 650px;
  margin-bottom: 26px;
  color: var(--color-hero-muted);
  font-size: 18px;
  line-height: 1.75;
}

.tutorial-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  margin: 28px 0 0;
  padding: 20px 0 0;
  border-top: 1px solid var(--color-hero-line);
  color: var(--color-hero-faint);
  font-size: 13px;
  list-style: none;
}

.tutorial-facts li {
  display: inline-flex;
  align-items: center;
  gap: 7px;
}

.tutorial-route {
  position: relative;
  display: grid;
  min-width: 0;
  gap: 13px;
  padding: 28px;
  border: 1px solid var(--color-deep-line);
  border-radius: var(--radius-lg);
  background: var(--color-deep-raised);
}

.tutorial-route__rail {
  position: absolute;
  top: 42px;
  bottom: 42px;
  left: 53px;
  width: 2px;
  background: linear-gradient(var(--color-accent), var(--color-accent-end));
  box-shadow: 0 0 18px var(--tutorial-route-glow);
}

.tutorial-route__step {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  min-height: 65px;
  align-items: center;
  gap: 17px;
  padding: 9px 16px 9px 0;
  border: 1px solid var(--color-deep-line);
  border-radius: var(--radius-sm);
  background: var(--tutorial-step-surface);
}

.tutorial-route__step::before {
  width: 13px;
  height: 13px;
  justify-self: center;
  border: 3px solid var(--color-deep-raised);
  border-radius: var(--radius-pill);
  background: var(--color-cyan);
  box-shadow: 0 0 16px var(--color-cyan);
  content: "";
}

.tutorial-route__step strong {
  color: var(--color-white);
  font-size: 17px;
}

.tutorial-route__code {
  position: absolute;
  right: 14px;
  color: var(--color-hero-faint);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
}

.tutorial-doc {
  padding-top: 34px;
  padding-bottom: var(--section-space);
}

.tutorial-doc .toc-tabs {
  margin-bottom: 8px;
}

.tutorial-intro {
  max-width: var(--prose-max);
  margin-inline: auto;
  color: var(--color-text-muted);
  font-size: 16px;
}

.tutorial-intro > p a,
.tutorial-step__content a:not(.btn) {
  color: var(--color-accent-dark);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.tutorial-step {
  display: grid;
  grid-template-columns: 150px minmax(0, 1fr);
  gap: clamp(26px, 5vw, 70px);
  padding-top: clamp(54px, 7vw, 86px);
  padding-bottom: clamp(54px, 7vw, 86px);
  border-top: 1px solid var(--color-border);
}

.tutorial-step__side {
  display: flex;
  min-width: 0;
  flex-direction: column;
  align-items: flex-start;
  gap: 10px;
}

.tutorial-step__number {
  color: var(--color-accent-dark);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.tutorial-step__state {
  display: inline-flex;
  max-width: 100%;
  padding: 5px 10px;
  overflow: hidden;
  border: 1px solid var(--color-cyan);
  border-radius: var(--radius-pill);
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 11px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.tutorial-step__content {
  min-width: 0;
  max-width: 820px;
}

.tutorial-step__content > h2 {
  margin-bottom: 26px;
}

.tutorial-step__content > p {
  color: var(--color-text-muted);
  font-size: 16px;
  line-height: 1.85;
}

.tutorial-step__content code {
  padding: 2px 6px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xs);
  background: var(--color-panel);
  color: var(--color-text);
}

.tutorial-action {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 22px;
  margin-top: 30px;
  padding: 20px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-panel);
}

.tutorial-action strong {
  display: block;
  margin-bottom: 3px;
}

.tutorial-action p {
  margin-bottom: 0;
  color: var(--color-text-muted);
  font-size: 13px;
}

.platform-instruction {
  margin-top: 24px;
  padding: 25px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-page);
}

.platform-instruction__head {
  display: flex;
  align-items: center;
  gap: 15px;
  margin-bottom: 17px;
}

.platform-instruction__mark {
  display: grid;
  width: 44px;
  height: 44px;
  flex-shrink: 0;
  place-items: center;
  border-radius: var(--radius-sm);
  background: var(--color-deep);
  color: var(--color-white);
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 850;
}

.platform-instruction__head h3 {
  margin-bottom: 4px;
}

.platform-instruction p {
  color: var(--color-text-muted);
  line-height: 1.82;
}

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

.verification-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin-top: 30px;
}

.verification-grid > div {
  min-width: 0;
  padding: 18px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-panel);
}

.verification-grid__code {
  display: block;
  margin-bottom: 12px;
  color: var(--color-accent-dark);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 750;
  letter-spacing: 0.07em;
}

.verification-grid strong {
  display: block;
  margin-bottom: 6px;
}

.verification-grid p {
  margin-bottom: 0;
  color: var(--color-text-muted);
  font-size: 13px;
}

.tutorial-complete {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 34px;
  margin-top: 12px;
  padding-inline: clamp(24px, 4vw, 48px);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(circle at 88% 20%, var(--color-pink-glow), var(--color-transparent) 42%),
    var(--color-deep);
  color: var(--color-hero-muted);
}

.tutorial-complete h2 {
  color: var(--color-white);
}

.tutorial-complete p {
  max-width: 680px;
  margin-bottom: 0;
}

.tutorial-complete .eyebrow {
  color: var(--color-hero-muted);
}

@media (max-width: 900px) {
  .tutorial-hero__inner {
    grid-template-columns: minmax(0, 1fr);
    min-height: 0;
  }

  .tutorial-route {
    grid-template-columns: repeat(5, minmax(0, 1fr));
    padding: 18px;
  }

  .tutorial-route__rail {
    top: 49px;
    right: 42px;
    bottom: auto;
    left: 42px;
    width: auto;
    height: 2px;
  }

  .tutorial-route__step {
    grid-template-columns: minmax(0, 1fr);
    min-height: 104px;
    justify-items: center;
    padding: 13px 8px;
    text-align: center;
  }

  .tutorial-route__code {
    position: static;
    order: 3;
  }

  .tutorial-step {
    grid-template-columns: 112px minmax(0, 1fr);
    gap: 28px;
  }

  .verification-grid {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (max-width: 700px) {
  .tutorial-hero {
    padding-top: 0;
  }

  .tutorial-hero__inner {
    border-radius: 0;
  }

  .tutorial-route {
    grid-template-columns: minmax(0, 1fr);
  }

  .tutorial-route__rail {
    top: 38px;
    right: auto;
    bottom: 38px;
    left: 43px;
    width: 2px;
    height: auto;
  }

  .tutorial-route__step {
    grid-template-columns: 48px minmax(0, 1fr);
    min-height: 62px;
    justify-items: stretch;
    padding: 8px 12px 8px 0;
    text-align: left;
  }

  .tutorial-route__step::before {
    justify-self: center;
  }

  .tutorial-route__code {
    position: absolute;
  }

  .tutorial-step {
    grid-template-columns: minmax(0, 1fr);
    gap: 18px;
  }

  .tutorial-step__side {
    flex-direction: row;
    align-items: center;
  }

  .tutorial-action,
  .tutorial-complete {
    grid-template-columns: minmax(0, 1fr);
  }

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

  .tutorial-complete {
    padding-inline: 22px;
  }
}

@media (max-width: 420px) {
  .tutorial-hero__lead,
  .tutorial-step__content > p {
    font-size: 15px;
  }

  .platform-instruction {
    padding: 18px;
  }

  .tutorial-step__state {
    min-width: 0;
  }
}