:root {
  --tutorial-copy-width: 820px;
  --tutorial-marker-width: 112px;
  --tutorial-line-width: 2px;
  --tutorial-card-min: 250px;
  --tutorial-hero-max: 920px;
}

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

.tutorial-hero {
  position: relative;
  max-width: 100%;
  padding-top: clamp(64px, 8vw, 108px);
  padding-bottom: clamp(64px, 8vw, 96px);
  overflow-x: clip;
  border-bottom: 1px solid var(--overlay-line);
  background:
    linear-gradient(var(--overlay-soft), var(--color-transparent)),
    var(--color-bg);
}

.tutorial-hero::before {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--overlay-line) 1px, var(--color-transparent) 1px),
    linear-gradient(90deg, var(--overlay-line) 1px, var(--color-transparent) 1px);
  background-size: 48px 48px;
  opacity: .22;
  content: "";
  pointer-events: none;
}

.tutorial-hero-glow {
  position: absolute;
  top: -46%;
  left: -18%;
  width: min(78vw, 900px);
  max-width: 100%;
  aspect-ratio: 1;
  border-radius: 50%;
  background: radial-gradient(circle, var(--accent-12), var(--color-transparent) 66%);
  pointer-events: none;
}

.tutorial-hero-inner {
  position: relative;
  z-index: 1;
}

.tutorial-heading {
  display: flex;
  max-width: var(--tutorial-hero-max);
  margin-inline: auto;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.tutorial-heading > .badge {
  margin-bottom: 18px;
}

.tutorial-heading h1 {
  margin-bottom: 18px;
}

.tutorial-lede {
  max-width: 720px;
  margin-bottom: 24px;
  color: var(--color-muted);
  font-size: clamp(17px, 2vw, 20px);
}

.tutorial-actions {
  justify-content: center;
}

.tutorial-facts {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px 18px;
  margin: 26px 0 0;
  padding: 18px 0 0;
  border-top: 1px solid var(--overlay-line);
  color: var(--color-muted);
  font-size: 13px;
  list-style: none;
}

.tutorial-facts li {
  position: relative;
  padding-left: 15px;
}

.tutorial-facts li::before {
  position: absolute;
  top: .68em;
  left: 0;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-success);
  content: "";
  transform: translateY(-50%);
}

.setup-strip {
  display: grid;
  max-width: 900px;
  margin: 48px auto 0;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr) auto minmax(0, 1fr);
  align-items: center;
  padding: 16px;
  border: 1px solid var(--overlay-edge);
  border-radius: var(--radius-md);
  background: var(--color-panel);
  box-shadow: inset 0 1px 0 var(--overlay-top), var(--shadow-window);
}

.setup-strip-item {
  display: grid;
  min-width: 0;
  gap: 3px;
  padding: 14px 18px;
}

.setup-strip-item strong {
  color: var(--color-text);
  font-size: 15px;
}

.setup-strip-item small {
  color: var(--color-muted);
  font-size: 12px;
}

.setup-label {
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .08em;
}

.setup-connector {
  width: 42px;
  height: var(--tutorial-line-width);
  background: linear-gradient(90deg, var(--color-border), var(--color-accent), var(--color-border));
}

.tutorial-article {
  position: relative;
  padding-bottom: var(--section-space);
}

.tutorial-article > .toc-tabs {
  margin-top: 24px;
}

.tutorial-section {
  display: grid;
  grid-template-columns: var(--tutorial-marker-width) minmax(0, var(--tutorial-copy-width));
  justify-content: center;
  gap: clamp(24px, 5vw, 68px);
  padding-top: clamp(70px, 8vw, 104px);
  padding-bottom: clamp(70px, 8vw, 104px);
  border-bottom: 1px solid var(--overlay-line);
}

.tutorial-section-last {
  border-bottom: 0;
}

.section-marker {
  position: relative;
  display: flex;
  min-width: 0;
  flex-direction: column;
  align-items: flex-end;
  gap: 14px;
}

.section-marker::after {
  position: absolute;
  top: 58px;
  right: 19px;
  bottom: -104px;
  width: var(--tutorial-line-width);
  background: linear-gradient(var(--color-border), var(--overlay-line));
  content: "";
}

.tutorial-section-last .section-marker::after {
  display: none;
}

.section-marker > span {
  color: var(--color-dim);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .08em;
}

.section-marker .icon-plate {
  position: relative;
  z-index: 1;
}

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

.tutorial-copy > p {
  color: var(--color-muted);
}

.tutorial-copy > p a,
.client-guide a {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.tutorial-copy pre {
  margin-block: 24px;
}

.step-action {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin-top: 32px;
  padding: 20px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-panel);
  box-shadow: inset 0 1px 0 var(--overlay-top);
}

.step-action > div {
  display: grid;
  min-width: 0;
  gap: 4px;
}

.step-action strong {
  color: var(--color-text);
}

.step-action span {
  color: var(--color-muted);
  font-size: 13px;
}

.step-action .btn {
  flex-shrink: 0;
}

.client-guides {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 30px;
  margin-bottom: 30px;
}

.client-guide {
  min-width: 0;
  padding: 24px;
  border: 1px solid var(--overlay-edge);
  border-radius: var(--radius-md);
  background: var(--color-panel);
  box-shadow: inset 0 1px 0 var(--overlay-top), var(--shadow-card);
}

.client-guide-head {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 18px;
}

.client-guide-head > div:last-child {
  min-width: 0;
}

.client-guide h3 {
  margin: 7px 0 0;
  font-size: 21px;
}

.client-guide p {
  color: var(--color-muted);
  font-size: 15px;
}

.client-guide p:last-child {
  margin-bottom: 0;
}

.verification-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 30px;
}

.verification-item {
  min-width: 0;
  padding: 20px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-panel);
}

.verification-item > span {
  display: block;
  margin-bottom: 9px;
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
}

.verification-item strong {
  display: block;
  margin-bottom: 7px;
  color: var(--color-text);
}

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

@media (max-width: 900px) {
  .tutorial-section {
    grid-template-columns: 72px minmax(0, 1fr);
    gap: 24px;
  }

  .section-marker::after {
    bottom: -104px;
  }

  .client-guides {
    grid-template-columns: 1fr;
  }

  .verification-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 700px) {
  .setup-strip {
    grid-template-columns: 1fr;
  }

  .setup-strip-item {
    text-align: center;
  }

  .setup-connector {
    width: var(--tutorial-line-width);
    height: 24px;
    margin-inline: auto;
    background: linear-gradient(var(--color-border), var(--color-accent), var(--color-border));
  }

  .tutorial-section {
    display: block;
  }

  .section-marker {
    flex-direction: row-reverse;
    align-items: center;
    justify-content: flex-end;
    margin-bottom: 22px;
  }

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

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

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

@media (max-width: 640px) {
  .tutorial-hero {
    padding-top: 52px;
    padding-bottom: 60px;
  }

  .tutorial-facts {
    align-items: flex-start;
    flex-direction: column;
  }

  .setup-strip {
    margin-top: 34px;
  }

  .tutorial-section {
    padding-top: 64px;
    padding-bottom: 64px;
  }

  .client-guide {
    padding: 20px;
  }

  .client-guide-head {
    align-items: flex-start;
  }

  .promo-block {
    margin-top: 40px;
  }
}