.setup-hero {
  position: relative;
  padding-top: 82px;
  padding-bottom: 76px;
  overflow-x: clip;
  border-bottom: 1px solid var(--color-border);
  background: linear-gradient(180deg, var(--color-panel-muted), var(--color-bg));
}

.setup-hero::before {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle, var(--color-dot) 1px, transparent 1.3px);
  background-size: 16px 16px;
  content: "";
  opacity: .58;
  pointer-events: none;
}

.setup-hero-beams {
  position: absolute;
  inset: 0 0 0 auto;
  width: 54%;
  max-width: 100%;
  overflow: hidden;
  pointer-events: none;
}

.setup-hero-beams::after {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, var(--color-bg), transparent);
  content: "";
}

.setup-hero-beams span {
  position: absolute;
  top: -12%;
  width: 16px;
  height: 72%;
  border-radius: var(--radius-pill);
  background: linear-gradient(180deg, var(--color-accent), var(--color-accent-bright));
  opacity: .16;
  filter: blur(2px);
  animation: setup-beam-breathe 8s ease-in-out infinite alternate;
}

.setup-hero-beams span:nth-child(1) {
  right: 8%;
  height: 48%;
}

.setup-hero-beams span:nth-child(2) {
  right: 18%;
  width: 10px;
  height: 76%;
  animation-duration: 9s;
}

.setup-hero-beams span:nth-child(3) {
  right: 30%;
  width: 18px;
  height: 57%;
  opacity: .24;
  animation-duration: 7s;
}

.setup-hero-beams span:nth-child(4) {
  right: 43%;
  width: 8px;
  height: 84%;
  opacity: .12;
}

.setup-hero-beams span:nth-child(5) {
  right: 56%;
  width: 13px;
  height: 66%;
  animation-duration: 9s;
}

.setup-hero-beams span:nth-child(6) {
  right: 69%;
  width: 7px;
  height: 42%;
  opacity: .2;
  animation-duration: 7s;
}

@keyframes setup-beam-breathe {
  to {
    opacity: .3;
    transform: translateY(18px);
  }
}

.setup-hero-inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(320px, .75fr);
  align-items: center;
  gap: 64px;
}

.setup-hero-copy {
  max-width: 790px;
}

.setup-hero-copy h1 {
  margin-top: 16px;
}

.setup-lead {
  max-width: 730px;
  margin-bottom: 28px;
  color: var(--color-text-muted);
  font-size: 19px;
  line-height: 1.72;
}

.setup-facts {
  margin: 22px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  list-style: none;
  color: var(--color-text-muted);
  font-size: 13px;
}

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

.setup-facts li::before {
  color: var(--color-success);
  content: "✓";
}

.setup-flow {
  position: relative;
  padding: 22px;
}

.setup-flow::after {
  position: absolute;
  right: 0;
  bottom: 0;
  width: 46%;
  height: 38%;
  background: linear-gradient(135deg, transparent, var(--color-accent-bright));
  content: "";
  opacity: .13;
  mask-image: radial-gradient(circle, #000 1.5px, transparent 1.9px);
  mask-size: 8px 8px;
  pointer-events: none;
}

.setup-flow-head {
  position: relative;
  z-index: 1;
  margin-bottom: 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.setup-flow-track {
  position: relative;
  z-index: 1;
}

.setup-flow-track::before {
  position: absolute;
  top: 16px;
  bottom: 16px;
  left: 8px;
  width: 1px;
  background: linear-gradient(180deg, var(--color-accent), var(--color-accent-bright));
  content: "";
}

.setup-flow-item {
  position: relative;
  min-height: 58px;
  display: grid;
  grid-template-columns: 18px 1fr;
  gap: 13px;
}

.setup-flow-item + .setup-flow-item {
  margin-top: 8px;
}

.setup-flow-dot {
  position: relative;
  z-index: 1;
  width: 17px;
  height: 17px;
  margin-top: 4px;
  border: 4px solid var(--color-panel);
  border-radius: var(--radius-pill);
  background: var(--color-accent);
  box-shadow: 0 0 0 1px var(--color-border);
}

.setup-flow-item p {
  margin: 2px 0 0;
  color: var(--color-text-muted);
  font-size: 13px;
}

.setup-guide {
  padding-top: 72px;
  padding-bottom: 96px;
}

.setup-guide .toc-tabs {
  top: 12px;
}

.setup-section {
  padding-top: 26px;
  padding-bottom: 38px;
  border-bottom: 1px solid var(--color-border);
}

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

.setup-section h2 {
  max-width: 860px;
  margin-top: 14px;
}

.setup-section > p,
.setup-section > .callout,
.setup-section > .setup-action-row,
.setup-section > .verification-grid {
  max-width: var(--reading-width);
}

.setup-action-row {
  margin-top: 28px;
  padding: 22px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-panel);
  box-shadow: var(--shadow-panel);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.setup-action-row p {
  margin: 4px 0 0;
  color: var(--color-text-muted);
  font-size: 14px;
}

.setup-action-row .btn {
  flex: 0 0 auto;
  text-decoration: none;
}

.platform-instructions {
  max-width: 1100px;
  margin: 30px 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.platform-instruction {
  padding: 24px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-panel);
  box-shadow: var(--shadow-panel);
}

.platform-instruction h3 {
  margin: 0;
  font-size: 25px;
}

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

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

.platform-label {
  margin-bottom: 18px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.verification-grid {
  margin: 28px 0;
  display: grid;
  gap: 12px;
}

.verification-item {
  padding: 18px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-panel);
  display: grid;
  grid-template-columns: 32px 1fr;
  gap: 14px;
}

.verification-mark {
  width: 30px;
  height: 30px;
  border-radius: var(--radius-pill);
  background: var(--color-accent-tint);
  color: var(--color-success);
  display: grid;
  place-items: center;
  font-weight: 700;
}

.verification-item p {
  margin: 3px 0 0;
  color: var(--color-text-muted);
  font-size: 14px;
}

@media (max-width: 980px) {
  .setup-hero-inner {
    grid-template-columns: 1fr;
    gap: 42px;
  }

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

  .setup-hero-beams {
    width: 74%;
    opacity: .68;
  }
}

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

  .setup-lead {
    font-size: 17px;
  }

  .setup-guide {
    padding-top: 54px;
    padding-bottom: 72px;
  }

  .platform-instructions {
    grid-template-columns: 1fr;
  }

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

  .setup-action-row .btn {
    width: 100%;
  }
}

@media (max-width: 640px) {
  .setup-hero-beams {
    width: 100%;
    max-width: 100%;
    opacity: .42;
  }

  .setup-hero-beams span:nth-child(1),
  .setup-hero-beams span:nth-child(2) {
    display: none;
  }

  .setup-flow {
    padding: 18px;
  }

  .setup-facts {
    display: grid;
    gap: 7px;
  }

  .setup-section {
    padding-top: 18px;
    padding-bottom: 28px;
  }

  .platform-instruction {
    padding: 20px;
  }

  .platform-label {
    align-items: flex-start;
    flex-direction: column;
  }

  .verification-item {
    grid-template-columns: 30px 1fr;
    padding: 16px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .setup-hero-beams span {
    animation: none;
  }
}