.tutorial-hero {
  overflow-x: clip;
  background:
    linear-gradient(90deg, var(--color-transparent), var(--wood-line), var(--color-transparent)),
    radial-gradient(circle at 82% 28%, var(--glow-screen), var(--color-transparent) 24rem);
}

.tutorial-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(300px, 0.68fr);
  align-items: center;
  gap: clamp(36px, 7vw, 92px);
  min-height: 510px;
}

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

.tutorial-intro h1 {
  max-width: 760px;
}

.tutorial-lead {
  max-width: 680px;
  margin-bottom: 28px;
  color: var(--color-text-muted);
  font-size: 18px;
}

.setup-route {
  position: relative;
  min-width: 0;
  padding: clamp(24px, 4vw, 38px);
  overflow: hidden;
  border-radius: var(--radius-xxl);
  color: var(--color-screen-muted);
  background:
    radial-gradient(circle at 80% 14%, var(--glow-screen-strong), var(--color-transparent) 15rem),
    var(--color-screen-deep);
  box-shadow: var(--shadow-device);
  transform: rotate(1deg);
}

.setup-route::before {
  position: absolute;
  top: 76px;
  bottom: 42px;
  left: 55px;
  width: 2px;
  content: "";
  background: var(--color-screen-line);
}

.setup-route-label {
  margin-bottom: 24px;
  color: var(--color-screen-soft);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.12em;
}

.setup-route ol {
  position: relative;
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.setup-route li {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  align-items: center;
  gap: 16px;
  min-width: 0;
  padding: 10px 12px;
  border-radius: var(--radius-md);
  background: var(--line-cool);
}

.setup-route li > span {
  position: relative;
  z-index: 2;
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border-radius: var(--radius-pill);
  color: var(--color-screen-deep);
  background: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 900;
}

.setup-route li div {
  display: grid;
  min-width: 0;
  gap: 2px;
}

.setup-route strong {
  color: var(--color-screen);
  font-size: 14px;
}

.setup-route small {
  overflow: hidden;
  color: var(--color-screen-muted);
  font-family: var(--font-mono);
  font-size: 9px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.setup-chapter {
  display: grid;
  grid-template-columns: 108px minmax(0, 1fr);
  gap: clamp(26px, 5vw, 66px);
  max-width: 1060px;
  margin-inline: auto;
}

.chapter-marker {
  position: relative;
  display: flex;
  justify-content: center;
}

.chapter-marker::after {
  position: absolute;
  top: 74px;
  bottom: -96px;
  width: 2px;
  content: "";
  background: linear-gradient(var(--color-accent-dark), var(--color-border-soft), var(--color-transparent));
}

.chapter-marker span {
  position: sticky;
  top: calc(var(--header-height) + 24px);
  display: grid;
  width: 72px;
  height: 72px;
  place-items: center;
  align-self: start;
  border-radius: var(--radius-xl);
  color: var(--color-bg);
  background: var(--color-accent);
  box-shadow: var(--shadow-button);
  font-family: var(--font-mono);
  font-size: 17px;
  font-weight: 900;
}

.setup-chapter-prep .chapter-marker span {
  color: var(--color-screen);
  background: var(--color-screen-panel);
  box-shadow: var(--shadow-device);
}

.chapter-body {
  max-width: 840px;
}

.chapter-body h2 {
  scroll-margin-top: calc(var(--header-height) + 24px);
}

.chapter-body h3 {
  color: var(--color-accent-pale);
}

.step-check {
  margin-top: 34px;
  padding: 24px 26px;
  border-radius: var(--radius-lg);
  color: var(--color-text-muted);
  background: var(--color-panel-raised);
}

.step-check strong {
  display: block;
  margin-bottom: 10px;
  color: var(--color-text);
  font-family: var(--font-mono);
  font-size: 13px;
}

.step-check ul {
  margin-bottom: 0;
}

.troubleshoot-notes {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.fix-note {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  gap: 18px;
  min-width: 0;
  padding: clamp(22px, 3vw, 30px);
  border-radius: var(--radius-xl);
  color: var(--color-text-muted);
  background: var(--color-panel);
}

.fix-index {
  display: grid;
  width: 48px;
  height: 48px;
  place-items: center;
  border-radius: var(--radius-md);
  color: var(--color-bg);
  background: var(--color-accent);
  font-family: var(--font-mono);
  font-weight: 900;
}

.fix-note h3 {
  margin-bottom: 8px;
  font-size: 21px;
}

.fix-note p {
  font-size: 15px;
}

.manual-bridge {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 34px;
  margin-top: 38px;
  background:
    radial-gradient(circle at 90% 10%, var(--glow-accent), var(--color-transparent) 17rem),
    var(--color-panel-raised);
}

.manual-bridge h2 {
  font-size: clamp(27px, 3.5vw, 39px);
}

.manual-bridge p:not(.section-kicker) {
  max-width: 700px;
}

@media (max-width: 860px) {
  .tutorial-hero-grid {
    grid-template-columns: minmax(0, 1fr);
    min-height: 0;
  }

  .setup-route {
    max-width: 600px;
    transform: none;
  }

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

@media (max-width: 700px) {
  .setup-chapter {
    grid-template-columns: minmax(0, 1fr);
    gap: 18px;
  }

  .chapter-marker {
    justify-content: flex-start;
  }

  .chapter-marker::after {
    display: none;
  }

  .chapter-marker span {
    position: static;
    width: 56px;
    height: 56px;
    border-radius: var(--radius-lg);
    font-size: 14px;
  }

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

@media (max-width: 480px) {
  .tutorial-lead {
    font-size: 16px;
  }

  .setup-route {
    padding: 22px 18px;
    border-radius: var(--radius-xl);
  }

  .setup-route::before {
    left: 49px;
  }

  .setup-route li {
    grid-template-columns: 38px minmax(0, 1fr);
    gap: 12px;
  }

  .setup-route li > span {
    width: 38px;
    height: 38px;
  }

  .fix-note {
    grid-template-columns: 40px minmax(0, 1fr);
    gap: 14px;
  }

  .fix-index {
    width: 40px;
    height: 40px;
  }

  .step-check {
    padding: 21px 20px;
  }
}