.tutorial-main {
  overflow-x: clip;
}

.tutorial-hero {
  position: relative;
  display: flex;
  min-height: min(760px, calc(100svh - var(--header-height)));
  align-items: center;
  overflow: hidden;
  border-bottom: 1px solid var(--color-border);
  background:
    radial-gradient(circle at 78% 46%, color-mix(in srgb, var(--color-accent) 12%, transparent), transparent 34%),
    linear-gradient(115deg, var(--color-bg), var(--color-panel));
}

.tutorial-hero::before {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(color-mix(in srgb, var(--color-border) 28%, transparent) 1px, transparent 1px),
    linear-gradient(90deg, color-mix(in srgb, var(--color-border) 28%, transparent) 1px, transparent 1px);
  background-size: 46px 46px;
  content: "";
  mask-image: linear-gradient(to right, transparent, var(--color-shadow) 36%, var(--color-shadow), transparent);
  opacity: 0.46;
  pointer-events: none;
}

.tutorial-hero-grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(360px, 0.78fr);
  align-items: center;
  gap: clamp(48px, 8vw, 112px);
  padding-top: clamp(64px, 8vw, 110px);
  padding-bottom: clamp(64px, 8vw, 110px);
}

.tutorial-hero-copy {
  min-width: 0;
}

.tutorial-hero-copy h1 {
  max-width: 760px;
  margin-top: 20px;
}

.tutorial-hero-copy .lead {
  margin-top: 24px;
}

.tutorial-trust {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  margin-top: 22px;
  color: var(--color-text-muted);
  list-style: none;
}

.tutorial-trust li {
  display: inline-flex;
  align-items: center;
  gap: 9px;
}

.tutorial-trust li::before {
  width: 6px;
  height: 6px;
  flex-shrink: 0;
  background: var(--color-accent);
  box-shadow: 0 0 12px color-mix(in srgb, var(--color-accent) 58%, transparent);
  content: "";
}

.tutorial-route {
  position: relative;
  min-width: 0;
  border: 1px solid var(--color-globe-line);
  background: color-mix(in srgb, var(--color-panel-raised) 92%, transparent);
  box-shadow: var(--shadow-panel);
}

.tutorial-route::before {
  position: absolute;
  top: 54px;
  bottom: 54px;
  left: 39px;
  width: 1px;
  background: linear-gradient(var(--color-accent), var(--color-globe-line));
  content: "";
}

.tutorial-route-head {
  display: flex;
  min-height: 52px;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-inline: 20px;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-annotation);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
}

.tutorial-route-list {
  display: grid;
  list-style: none;
}

.tutorial-route-list li {
  position: relative;
  display: grid;
  min-width: 0;
  min-height: 68px;
  grid-template-columns: 74px 1fr;
  align-items: center;
  padding: 12px 20px;
  border-bottom: 1px solid var(--color-border);
}

.tutorial-route-list li::before {
  position: absolute;
  left: 35px;
  width: 9px;
  height: 9px;
  border: 2px solid var(--color-panel-raised);
  background: var(--color-accent);
  box-shadow: 0 0 16px color-mix(in srgb, var(--color-accent) 54%, transparent);
  content: "";
}

.tutorial-route-list span {
  padding-left: 34px;
  color: var(--color-annotation);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
}

.tutorial-route-list strong {
  min-width: 0;
  font-size: 15px;
}

.tutorial-route-note {
  display: flex;
  min-height: 48px;
  align-items: center;
  gap: 10px;
  padding-inline: 20px;
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
}

.route-square {
  width: 7px;
  height: 7px;
  flex-shrink: 0;
  background: var(--color-warning);
}

.tutorial-hero-grid-decor {
  position: absolute;
  top: 9%;
  right: -8%;
  width: min(48vw, 680px);
  aspect-ratio: 1;
  border: 1px solid color-mix(in srgb, var(--color-accent) 16%, transparent);
  border-radius: 50%;
  opacity: 0.42;
  pointer-events: none;
}

.tutorial-hero-grid-decor::before,
.tutorial-hero-grid-decor::after {
  position: absolute;
  inset: 15%;
  border: 1px solid color-mix(in srgb, var(--color-accent) 14%, transparent);
  border-radius: 50%;
  content: "";
}

.tutorial-hero-grid-decor::after {
  inset: 31%;
}

.tutorial-document {
  position: relative;
  padding-top: clamp(38px, 5vw, 68px);
  padding-bottom: var(--section-space);
}

.tutorial-document > .toc-tabs {
  margin-bottom: clamp(64px, 8vw, 104px);
}

.tutorial-intro {
  padding-bottom: clamp(72px, 8vw, 112px);
}

.tutorial-intro-copy {
  display: grid;
  max-width: 900px;
  gap: 18px;
  margin-top: 28px;
  color: var(--color-text-muted);
  font-size: 16px;
}

.tutorial-intro .callout a,
.tutorial-flow a:not(.btn-primary):not(.btn-secondary),
.tutorial-support a:not(.btn-primary):not(.btn-secondary) {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.tutorial-flow {
  counter-reset: tutorial-step;
  border-top: 1px solid var(--color-border);
}

.tutorial-step {
  display: grid;
  grid-template-columns: 118px minmax(0, 1fr);
  gap: clamp(28px, 5vw, 74px);
  padding-top: clamp(64px, 8vw, 112px);
  padding-bottom: clamp(64px, 8vw, 112px);
  border-bottom: 1px solid var(--color-border);
}

.step-marker {
  position: sticky;
  top: calc(var(--header-height) + 66px);
  display: grid;
  width: 84px;
  height: 84px;
  align-content: center;
  align-self: start;
  justify-items: center;
  border: 1px solid var(--color-border);
  background: var(--color-panel);
}

.step-marker span {
  color: var(--color-annotation);
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.16em;
}

.step-marker strong {
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 25px;
}

.step-content {
  min-width: 0;
  max-width: 920px;
}

.step-content h2 {
  margin-top: 10px;
}

.step-content > p:not(.eyebrow) {
  margin-top: 20px;
  color: var(--color-text-muted);
  font-size: 16px;
  line-height: 1.9;
}

.step-content pre {
  margin-top: 22px;
}

.step-content .callout {
  margin-top: 28px;
}

.step-action {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 18px;
  margin-top: 30px;
}

.platform-instructions {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin-top: 30px;
  border: 1px solid var(--color-border);
  background: var(--color-border);
}

.platform-instruction {
  min-width: 0;
  padding: clamp(22px, 3vw, 32px);
  background: var(--color-panel);
}

.platform-instruction p {
  margin-top: 16px;
  color: var(--color-text-muted);
}

.platform-heading {
  display: flex;
  align-items: center;
  gap: 14px;
}

.platform-heading h3 {
  font-size: 21px;
}

.platform-code {
  display: inline-flex;
  min-width: 44px;
  min-height: 28px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-accent);
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.08em;
}

.tutorial-support {
  padding-top: var(--section-space);
}

.check-sequence {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border-top: 1px solid var(--color-border);
  border-left: 1px solid var(--color-border);
}

.check-sequence article {
  min-width: 0;
  padding: clamp(22px, 3vw, 30px);
  border-right: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  background: var(--color-panel);
}

.check-sequence h3 {
  margin-top: 28px;
  font-size: 20px;
}

.check-sequence p {
  margin-top: 14px;
  color: var(--color-text-muted);
}

.check-index {
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
}

.tutorial-next {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 34px;
  margin-top: 36px;
  padding: clamp(26px, 4vw, 44px);
  border: 1px solid var(--color-border);
  background:
    linear-gradient(110deg, color-mix(in srgb, var(--color-accent) 8%, transparent), transparent 58%),
    var(--color-panel-raised);
}

.tutorial-next h3 {
  margin-top: 8px;
}

.tutorial-next p:not(.eyebrow) {
  max-width: 720px;
  margin-top: 10px;
  color: var(--color-text-muted);
}

.tutorial-next-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 12px;
}

@media (max-width: 1040px) {
  .tutorial-hero {
    min-height: auto;
  }

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

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

  .tutorial-hero-grid-decor {
    right: -24%;
    width: min(78vw, 620px);
  }

  .check-sequence {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 820px) {
  .tutorial-step {
    grid-template-columns: 72px minmax(0, 1fr);
    gap: 22px;
  }

  .step-marker {
    width: 62px;
    height: 62px;
  }

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

  .tutorial-next {
    grid-template-columns: 1fr;
    align-items: start;
  }

  .tutorial-next-actions {
    justify-content: flex-start;
  }
}

@media (max-width: 640px) {
  .tutorial-hero-grid {
    gap: 42px;
    padding-top: 52px;
    padding-bottom: 58px;
  }

  .tutorial-hero-grid-decor {
    display: none;
  }

  .tutorial-route::before {
    left: 31px;
  }

  .tutorial-route-list li {
    min-height: 62px;
    grid-template-columns: 62px 1fr;
    padding-inline: 14px;
  }

  .tutorial-route-list li::before {
    left: 27px;
  }

  .tutorial-route-list span {
    padding-left: 28px;
    font-size: 8px;
  }

  .tutorial-document {
    padding-top: 28px;
  }

  .tutorial-document > .toc-tabs {
    margin-bottom: 56px;
  }

  .tutorial-step {
    grid-template-columns: 1fr;
    gap: 22px;
    padding-top: 62px;
    padding-bottom: 62px;
  }

  .step-marker {
    position: static;
    width: 58px;
    height: 58px;
  }

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

  .step-action .btn-primary,
  .step-action .btn-secondary {
    width: 100%;
  }

  .check-sequence {
    grid-template-columns: 1fr;
  }

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

  .tutorial-next-actions .btn-secondary {
    width: 100%;
  }
}