.setup-hero {
  position: relative;
  overflow-x: clip;
  padding-top: clamp(64px, 8vw, 104px);
  padding-bottom: clamp(70px, 9vw, 118px);
  border-bottom: 1px solid var(--line-soft);
}

.setup-hero::before {
  position: absolute;
  inset: 0;
  pointer-events: none;
  content: "";
  background:
    radial-gradient(circle at 86% 74%, var(--twilight-glow), transparent 24rem),
    linear-gradient(180deg, var(--color-bg), var(--color-bg-soft));
}

.setup-hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(360px, 0.72fr);
  align-items: center;
  gap: clamp(42px, 7vw, 92px);
}

.setup-hero-copy {
  max-width: 760px;
}

.setup-hero-copy .eyebrow {
  margin-bottom: 22px;
}

.setup-hero-copy .lead {
  margin-bottom: 28px;
}

.setup-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 25px 0 0;
  padding: 0;
  list-style: none;
}

.setup-facts li {
  display: inline-flex;
  min-height: 30px;
  align-items: center;
  padding: 4px 11px;
  border: 1px solid var(--line-medium);
  border-radius: var(--radius-pill);
  background: var(--color-panel);
  color: var(--color-text-soft);
  font-size: 13px;
  box-shadow: var(--shadow-inner);
}

.setup-route {
  position: relative;
  padding: clamp(22px, 4vw, 34px);
  overflow: clip;
}

.setup-route::before {
  position: absolute;
  right: -18%;
  bottom: -34%;
  width: 70%;
  aspect-ratio: 1;
  border: 1px solid var(--accent-line);
  border-radius: 50%;
  content: "";
}

.setup-route-head {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line-medium);
}

.setup-route-head .mono {
  color: var(--color-accent-strong);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.setup-route-list {
  position: relative;
  display: grid;
  gap: 0;
  margin: 0;
  padding: 20px 0 0;
  list-style: none;
}

.setup-route-list li {
  position: relative;
  display: grid;
  grid-template-columns: 20px minmax(0, 1fr);
  gap: 15px;
  padding-bottom: 24px;
}

.setup-route-list li:not(:last-child)::before {
  position: absolute;
  top: 17px;
  bottom: 0;
  left: 6px;
  border-left: 1px dashed var(--color-accent);
  content: "";
}

.setup-route-list li:last-child {
  padding-bottom: 0;
}

.route-step-dot {
  position: relative;
  z-index: 1;
  width: 13px;
  height: 13px;
  margin-top: 6px;
  border: 3px solid var(--color-panel-raised);
  border-radius: 50%;
  background: var(--color-accent);
  box-shadow: 0 0 0 1px var(--color-accent);
}

.setup-route-list strong {
  color: var(--color-text);
  font-family: var(--font-display);
  font-size: 17px;
}

.setup-route-list p {
  margin: 5px 0 0;
  color: var(--color-text-muted);
  font-size: 14px;
}

.setup-guide {
  padding-top: clamp(44px, 7vw, 82px);
  padding-bottom: clamp(60px, 9vw, 112px);
}

.setup-guide > .toc-tabs {
  margin-bottom: clamp(34px, 5vw, 58px);
}

.setup-step {
  position: relative;
  max-width: 920px;
  margin-inline: auto;
  padding-top: clamp(48px, 7vw, 82px);
  padding-bottom: clamp(48px, 7vw, 82px);
  border-bottom: 1px solid var(--line-medium);
}

.setup-step:first-of-type {
  padding-top: 40px;
}

.setup-step:last-child {
  border-bottom: 0;
}

.setup-step-mark {
  margin-bottom: 14px;
  color: var(--color-accent-strong);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
}

.setup-step h2 {
  max-width: 800px;
}

.setup-step > p {
  font-size: 17px;
  line-height: 1.9;
}

.setup-inline-action {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-top: 28px;
  padding: 18px;
  border: 1px solid var(--line-medium);
  border-radius: var(--radius-sm);
  background: var(--color-bg-soft);
}

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

.setup-platform-tabs {
  margin-top: 32px;
}

.setup-platform-panel {
  margin-top: 18px;
  padding: clamp(22px, 4vw, 34px);
  border: 1px solid var(--line-medium);
  border-radius: var(--radius-md);
  background: var(--color-panel);
  box-shadow: var(--shadow-low);
}

.setup-platform-panel h3 {
  color: var(--color-text);
}

.setup-platform-panel p {
  font-size: 16px;
  line-height: 1.85;
}

.setup-finish {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 28px;
  margin-top: 40px;
  padding: clamp(24px, 5vw, 42px);
}

.setup-finish .kicker {
  margin-bottom: 16px;
}

.setup-finish h3 {
  margin-bottom: 8px;
}

.setup-finish p {
  color: var(--color-text-soft);
}

@media (max-width: 900px) {
  .setup-hero-grid {
    grid-template-columns: 1fr;
  }

  .setup-route {
    max-width: 680px;
  }
}

@media (max-width: 640px) {
  .setup-hero {
    padding-top: 48px;
    padding-bottom: 64px;
  }

  .setup-facts {
    align-items: stretch;
    flex-direction: column;
  }

  .setup-facts li {
    justify-content: center;
  }

  .setup-guide {
    padding-top: 32px;
  }

  .setup-step {
    padding-top: 52px;
    padding-bottom: 52px;
  }

  .setup-step > p {
    font-size: 16px;
    line-height: 1.82;
  }

  .setup-inline-action,
  .setup-finish {
    grid-template-columns: 1fr;
    align-items: stretch;
  }

  .setup-inline-action {
    flex-direction: column;
  }

  .setup-inline-action .btn,
  .setup-finish .btn {
    width: 100%;
  }

  .setup-inline-action span {
    text-align: center;
  }

  .setup-platform-panel {
    padding-inline: 18px;
  }
}