:root {
  --tutorial-line-width: 3px;
  --tutorial-marker-size: 34px;
  --tutorial-copy-width: 720px;
}

.tutorial-intro {
  padding-top: 82px;
  padding-bottom: 76px;
  overflow-x: clip;
  border-bottom: 1px solid var(--color-border-soft);
}

.tutorial-intro-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(300px, .8fr);
  align-items: center;
  gap: 64px;
}

.tutorial-intro-copy {
  min-width: 0;
  max-width: var(--tutorial-copy-width);
}

.tutorial-intro h1 {
  margin-top: 22px;
  margin-bottom: 22px;
}

.tutorial-lead {
  max-width: 670px;
  margin-bottom: 26px;
  color: var(--color-text-muted);
  font-size: 18px;
  line-height: 1.8;
}

.tutorial-intro .trust-row {
  margin-bottom: 0;
}

.tutorial-route {
  position: relative;
  min-width: 0;
  padding: 28px;
}

.tutorial-route::after {
  position: absolute;
  right: 28px;
  bottom: 22px;
  width: 96px;
  height: 96px;
  border-radius: var(--radius-pill);
  background: radial-gradient(closest-side, var(--color-accent-glow), var(--color-transparent));
  content: "";
  pointer-events: none;
}

.tutorial-route-head {
  display: flex;
  margin-bottom: 22px;
  align-items: center;
  gap: 10px;
  color: var(--color-text);
  font-family: var(--font-display);
  font-weight: 750;
}

.tutorial-route-list {
  position: relative;
  z-index: 1;
  margin: 0;
  padding: 0;
  list-style: none;
}

.tutorial-route-list li {
  position: relative;
  display: flex;
  min-width: 0;
  min-height: 58px;
  padding: 10px 0 10px 28px;
  border-bottom: 1px solid var(--color-border-soft);
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
}

.tutorial-route-list li:last-child {
  border-bottom: 0;
}

.tutorial-route-list li::before {
  position: absolute;
  top: 18px;
  left: 2px;
  width: 9px;
  height: 9px;
  border: 2px solid var(--color-accent);
  border-radius: var(--radius-pill);
  background: var(--color-panel-raised);
  content: "";
}

.tutorial-route-list li:not(:last-child)::after {
  position: absolute;
  top: 29px;
  bottom: -18px;
  left: 6px;
  width: 1px;
  background: var(--color-border);
  content: "";
}

.tutorial-route-list span {
  color: var(--color-text);
  font-weight: 680;
}

.tutorial-route-list small {
  flex-shrink: 0;
  color: var(--color-text-muted);
  font-size: 12px;
}

.tutorial-article {
  padding-top: 64px;
  padding-bottom: 32px;
}

.tutorial-article .toc-tabs {
  top: 12px;
}

.tutorial-step {
  position: relative;
  padding-top: 58px;
  padding-bottom: 58px;
  border-bottom: 1px solid var(--color-border-soft);
  color: var(--color-text-muted);
}

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

.tutorial-step p {
  line-height: 1.85;
}

.tutorial-step a:not(.btn-primary):not(.btn-secondary) {
  color: var(--color-accent);
  text-decoration: underline;
  text-decoration-color: var(--color-accent-deep);
  text-underline-offset: 3px;
}

.tutorial-step code {
  padding: 2px 6px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xs);
  background: var(--color-panel);
  color: var(--color-accent);
}

.step-heading {
  position: relative;
  margin-bottom: 24px;
  padding-left: 50px;
}

.step-heading::before {
  position: absolute;
  top: 4px;
  bottom: 4px;
  left: 34px;
  width: var(--tutorial-line-width);
  border-radius: var(--radius-pill);
  background: linear-gradient(180deg, var(--color-accent), var(--color-accent-deep));
  content: "";
}

.step-heading h2 {
  margin-bottom: 0;
  font-size: clamp(30px, 4vw, 42px);
}

.step-label {
  position: absolute;
  top: 3px;
  left: 0;
  display: grid;
  width: var(--tutorial-marker-size);
  min-height: var(--tutorial-marker-size);
  padding: 5px;
  place-items: center;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-panel-raised);
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 750;
}

.step-actions {
  display: flex;
  margin-top: 28px;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.platform-instructions {
  display: grid;
  margin-top: 32px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.platform-instruction {
  min-width: 0;
  padding: 24px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-panel);
  box-shadow: var(--shadow-soft);
}

.platform-instruction h3 {
  position: relative;
  margin-bottom: 16px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--color-border-soft);
  font-size: 22px;
}

.platform-instruction h3::after {
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 44px;
  height: 2px;
  border-radius: var(--radius-pill);
  background: var(--color-accent);
  content: "";
}

.platform-instruction p {
  font-size: 15px;
}

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

@media (max-width: 900px) {
  .tutorial-intro-grid {
    grid-template-columns: 1fr;
    gap: 42px;
  }

  .tutorial-route {
    max-width: 620px;
  }

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

@media (max-width: 768px) {
  .tutorial-intro {
    padding-top: 58px;
    padding-bottom: 58px;
  }

  .tutorial-lead {
    font-size: 16px;
  }

  .tutorial-article {
    padding-top: 42px;
  }

  .tutorial-step {
    padding-top: 46px;
    padding-bottom: 46px;
  }

  .step-heading h2 {
    font-size: clamp(28px, 8vw, 36px);
  }
}

@media (max-width: 640px) {
  .tutorial-intro-grid {
    gap: 34px;
  }

  .tutorial-route {
    padding: 22px;
  }

  .tutorial-route-list li {
    align-items: flex-start;
    flex-direction: column;
    gap: 2px;
  }

  .tutorial-route-list small {
    padding-left: 0;
  }

  .step-heading {
    padding-top: 44px;
    padding-left: 0;
  }

  .step-heading::before {
    top: 38px;
    bottom: auto;
    left: 42px;
    width: 42px;
    height: var(--tutorial-line-width);
  }

  .step-label {
    top: 0;
  }

  .platform-instruction {
    padding: 20px;
  }

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

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