:root {
  --tutorial-reading-width: 940px;
  --tutorial-hero-space-top: clamp(58px, 7vw, 94px);
  --tutorial-hero-space-bottom: clamp(52px, 7vw, 88px);
  --tutorial-document-space: clamp(58px, 7vw, 92px);
  --tutorial-step-space: clamp(58px, 8vw, 104px);
  --tutorial-step-gap: clamp(20px, 4vw, 52px);
  --tutorial-marker-width: 132px;
  --tutorial-path-space: clamp(22px, 4vw, 38px);
  --tutorial-card-space: clamp(20px, 3vw, 28px);
  --tutorial-platform-gap: 16px;
  --tutorial-line-width: 1px;
  --tutorial-icon-size: 48px;
  --tutorial-next-label-width: 104px;
}

.tutorial-hero {
  position: relative;
  max-width: 100%;
  padding-top: var(--tutorial-hero-space-top);
  padding-bottom: var(--tutorial-hero-space-bottom);
  overflow-x: clip;
  background:
    radial-gradient(circle at 18% 26%, var(--color-accent-12), var(--color-transparent) 28%),
    radial-gradient(circle at 82% 18%, var(--color-accent-06), var(--color-transparent) 26%),
    linear-gradient(180deg, var(--color-accent-06), var(--color-transparent));
}

.tutorial-hero__inner {
  display: flex;
  align-items: center;
  flex-direction: column;
  text-align: center;
}

.tutorial-hero h1 {
  max-width: 840px;
  margin-top: 18px;
  margin-bottom: 0;
}

.tutorial-hero__lead {
  max-width: 760px;
  margin: 18px auto 0;
  color: var(--color-text-muted);
  font-size: clamp(17px, 2vw, 20px);
}

.tutorial-path {
  position: relative;
  width: 100%;
  margin-top: clamp(38px, 6vw, 66px);
  padding: var(--tutorial-path-space);
  overflow: hidden;
}

.tutorial-path__line {
  position: absolute;
  inset: 20px 5% auto;
  color: var(--color-accent-30);
  pointer-events: none;
}

.tutorial-path__line svg {
  width: 100%;
  height: auto;
}

.tutorial-path__items {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 12px;
}

.tutorial-path__items span {
  display: flex;
  min-width: 0;
  align-items: center;
  flex-direction: column;
  gap: 8px;
  color: var(--color-text-muted);
  font-size: 13px;
  font-weight: 650;
}

.tutorial-path__items i {
  display: grid;
  min-width: 70px;
  min-height: 38px;
  padding: 7px 12px;
  place-items: center;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  background: var(--color-panel);
  box-shadow: var(--highlight-inner), var(--shadow-soft);
  color: var(--color-accent-dark);
  font-family: var(--font-mono);
  font-size: 12px;
  font-style: normal;
  font-weight: 800;
}

.tutorial-document {
  max-width: calc(var(--tutorial-reading-width) + (var(--gutter) * 2));
  padding-top: var(--tutorial-document-space);
  padding-bottom: var(--tutorial-document-space);
}

.tutorial-document > .callout {
  margin-top: 0;
  margin-bottom: var(--tutorial-step-space);
}

.tutorial-step {
  position: relative;
  display: grid;
  padding-bottom: var(--tutorial-step-space);
  grid-template-columns: var(--tutorial-marker-width) minmax(0, 1fr);
  gap: var(--tutorial-step-gap);
}

.tutorial-step + .tutorial-step {
  padding-top: var(--tutorial-step-space);
  border-top: var(--tutorial-line-width) solid var(--color-border);
}

.tutorial-step__marker {
  position: sticky;
  top: var(--header-offset);
  align-self: start;
  padding-top: 8px;
  color: var(--color-accent-dark);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .1em;
  writing-mode: vertical-rl;
}

.tutorial-step__marker::after {
  content: "";
  display: block;
  width: var(--tutorial-line-width);
  height: 72px;
  margin-top: 16px;
  background: linear-gradient(180deg, var(--color-accent), var(--color-border));
}

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

.tutorial-step__content > h2:first-child {
  margin-top: 0;
}

.tutorial-step__content > p {
  color: var(--color-text-muted);
  font-size: 17px;
}

.tutorial-step__content > p:first-of-type {
  color: var(--color-text);
}

.tutorial-next {
  display: grid;
  margin-top: 30px;
  padding: 18px 20px;
  grid-template-columns: var(--tutorial-next-label-width) minmax(0, 1fr);
  align-items: start;
  gap: 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-panel);
  background: var(--color-panel-recessed);
  box-shadow: var(--highlight-inner);
}

.tutorial-next span {
  color: var(--color-accent-dark);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 800;
}

.tutorial-next p {
  margin-bottom: 0;
  color: var(--color-text-muted);
}

.tutorial-platforms {
  display: grid;
  margin-top: 34px;
  margin-bottom: 34px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--tutorial-platform-gap);
}

.tutorial-platform {
  min-width: 0;
  padding: var(--tutorial-card-space);
}

.tutorial-platform__head {
  display: flex;
  margin-bottom: 18px;
  align-items: center;
  gap: 14px;
}

.tutorial-platform__head h3 {
  margin-bottom: 0;
}

.tutorial-platform__icon {
  display: grid;
  width: var(--tutorial-icon-size);
  height: var(--tutorial-icon-size);
  flex: 0 0 auto;
  place-items: center;
  border-radius: var(--radius-panel);
  background: var(--color-panel-recessed);
  color: var(--color-accent-dark);
}

.tutorial-platform__icon svg {
  width: 26px;
  height: 26px;
}

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

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

.tutorial-finish {
  display: grid;
  padding: clamp(28px, 5vw, 48px);
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 32px;
  background: linear-gradient(135deg, var(--color-panel), var(--color-panel-recessed));
}

.tutorial-finish h2 {
  margin-top: 16px;
  font-size: clamp(30px, 4vw, 44px);
}

.tutorial-finish p {
  max-width: 680px;
  margin-bottom: 0;
  color: var(--color-text-muted);
}

@media (max-width: 768px) {
  .tutorial-path__line {
    display: none;
  }

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

  .tutorial-path__items span:last-child {
    grid-column: 1 / -1;
  }

  .tutorial-step {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .tutorial-step__marker {
    position: static;
    padding-top: 0;
    writing-mode: horizontal-tb;
  }

  .tutorial-step__marker::after {
    display: inline-block;
    width: 64px;
    height: var(--tutorial-line-width);
    margin: 0 0 3px 12px;
    background: linear-gradient(90deg, var(--color-accent), var(--color-border));
  }

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

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

  .tutorial-finish .btn {
    width: fit-content;
  }
}

@media (max-width: 640px) {
  .tutorial-hero {
    padding-top: 48px;
    padding-bottom: 54px;
  }

  .tutorial-path {
    padding: 18px 14px;
  }

  .tutorial-path__items {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .tutorial-path__items span,
  .tutorial-path__items span:last-child {
    grid-column: auto;
  }

  .tutorial-path__items span {
    flex-direction: row;
    text-align: left;
  }

  .tutorial-path__items i {
    min-width: 82px;
  }

  .tutorial-step__content > p {
    font-size: 16px;
  }

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

  .tutorial-platform {
    padding: 20px 17px;
  }

  .tutorial-finish {
    padding: 24px 18px;
  }

  .tutorial-finish .btn {
    width: 100%;
  }
}