:root {
  --tutorial-hero-gap: clamp(36px, 7vw, 96px);
  --tutorial-step-gap: clamp(18px, 4vw, 46px);
  --tutorial-rail-width: clamp(48px, 7vw, 82px);
  --tutorial-content-width: 820px;
  --tutorial-hero-pad-top: clamp(68px, 9vw, 116px);
  --tutorial-hero-pad-bottom: clamp(58px, 8vw, 96px);
  --tutorial-step-pad: clamp(58px, 8vw, 96px);
}

.tutorial-hero {
  border-bottom: 1px solid var(--color-border);
  padding-top: var(--tutorial-hero-pad-top);
  padding-bottom: var(--tutorial-hero-pad-bottom);
  background: var(--color-canvas);
  color: var(--color-ink);
}

.tutorial-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(250px, 340px);
  align-items: end;
  gap: var(--tutorial-hero-gap);
}

.tutorial-hero__main {
  max-width: 790px;
}

.tutorial-hero__main h1 {
  max-width: 780px;
  font-size: clamp(34px, 3.35vw, 48px);
}

.tutorial-hero__lead {
  max-width: 720px;
  margin-bottom: 30px;
  color: var(--color-ink-soft);
  font-family: var(--font-serif);
  font-size: clamp(18px, 2vw, 22px);
  line-height: 1.72;
}

.tutorial-hero__index {
  border-top: 1px solid var(--color-border-strong);
  border-bottom: 1px solid var(--color-border);
  padding-top: 18px;
  padding-bottom: 8px;
}

.tutorial-hero__index-title {
  margin-bottom: 10px;
  color: var(--color-ink-soft);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .1em;
}

.tutorial-hero__index dl {
  margin: 0;
}

.tutorial-hero__index dl div {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  gap: 16px;
  border-top: 1px solid var(--color-border);
  padding-top: 11px;
  padding-bottom: 11px;
}

.tutorial-hero__index dt {
  color: var(--color-ink-soft);
  font-family: var(--font-mono);
  font-size: 11px;
}

.tutorial-hero__index dd {
  margin: 0;
  font-size: 14px;
  font-weight: 650;
}

.tutorial-jump {
  margin-bottom: 0;
}

.tutorial-intro {
  border-top: 1px solid var(--color-border);
}

.tutorial-intro .reading-wrap > p:not(.serif-lead) {
  color: var(--color-ink-soft);
}

.tutorial-flow-section {
  border-top: 1px solid var(--color-border);
  background: var(--color-surface);
}

.tutorial-flow {
  border-top: 1px solid var(--color-border-strong);
  border-bottom: 1px solid var(--color-border-strong);
  background: var(--color-canvas);
}

.tutorial-step {
  display: grid;
  grid-template-columns: var(--tutorial-rail-width) minmax(0, var(--tutorial-content-width));
  justify-content: center;
  gap: var(--tutorial-step-gap);
  border-bottom: 1px solid var(--color-border);
  padding-top: var(--tutorial-step-pad);
  padding-right: clamp(18px, 4vw, 54px);
  padding-bottom: var(--tutorial-step-pad);
  padding-left: clamp(18px, 4vw, 54px);
  scroll-margin-top: 24px;
}

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

.tutorial-step__rail {
  display: flex;
  min-height: 100%;
  align-items: center;
  flex-direction: column;
}

.tutorial-step__number {
  display: grid;
  width: 48px;
  height: 48px;
  flex-shrink: 0;
  place-items: center;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-pill);
  background: var(--color-surface);
  color: var(--color-ink);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
}

.tutorial-step__line {
  width: 1px;
  min-height: 120px;
  flex: 1;
  margin-top: 18px;
  background: var(--color-border);
}

.tutorial-step__content {
  width: 100%;
}

.tutorial-step__content h2 {
  max-width: 720px;
}

.tutorial-step__content h3 {
  margin-top: 38px;
  font-size: clamp(19px, 2vw, 23px);
}

.tutorial-step__content > p:not(.serif-lead) {
  color: var(--color-ink-soft);
  font-size: 16px;
  line-height: 1.82;
}

.tutorial-step__content a:not(.tutorial-step__next) {
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
}

.tutorial-step__next {
  display: inline-flex;
  margin-top: 18px;
  border-bottom: 1px solid var(--color-ink);
  padding-top: 8px;
  padding-bottom: 5px;
  color: var(--color-ink);
  font-size: 14px;
  font-weight: 750;
}

.tutorial-step__next:hover {
  text-decoration: none;
}

.finish-grid {
  display: grid;
  grid-template-columns: minmax(240px, .8fr) minmax(0, 1.2fr);
  gap: clamp(40px, 7vw, 92px);
  align-items: start;
}

.finish-grid .eyebrow {
  color: var(--color-night-caption);
}

.finish-grid .serif-lead {
  color: var(--color-night-soft);
}

.finish-list {
  border-top: 1px solid var(--color-night-line);
}

.finish-list article {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  gap: 18px;
  border-bottom: 1px solid var(--color-night-line);
  padding-top: 20px;
  padding-bottom: 20px;
}

.finish-list__code {
  color: var(--color-night-caption);
  font-family: var(--font-mono);
  font-size: 11px;
}

.finish-list h3 {
  margin-bottom: 7px;
  font-size: 18px;
}

.finish-list p {
  margin-bottom: 0;
  color: var(--color-night-soft);
  font-size: 14px;
}

.finish-actions {
  display: flex;
  grid-column: 1 / -1;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  border-top: 1px solid var(--color-night-line);
  padding-top: 28px;
}

.finish-actions__secondary {
  border-color: var(--color-night-ink);
  color: var(--color-night-ink);
}

.finish-actions__secondary:hover {
  border-color: var(--color-night-ink);
  background: var(--color-chip-dark);
  color: var(--color-night-ink);
}

#before-start,
#finish-check {
  scroll-margin-top: 24px;
}

@media (max-width: 960px) {
  .tutorial-hero__grid {
    grid-template-columns: 1fr;
    align-items: start;
  }

  .tutorial-hero__index {
    max-width: 520px;
  }

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

  .finish-grid > div:first-child {
    max-width: 680px;
  }
}

@media (max-width: 768px) {
  .tutorial-hero__main h1 {
    font-size: clamp(24px, 7.2vw, 30px);
  }

  .tutorial-step {
    grid-template-columns: 42px minmax(0, 1fr);
    padding-right: 18px;
    padding-left: 18px;
  }

  .tutorial-step__number {
    width: 42px;
    height: 42px;
  }

  .tutorial-step__content > p:not(.serif-lead) {
    font-size: 15px;
  }
}

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

  .tutorial-hero__lead {
    font-size: 18px;
  }

  .tutorial-step {
    grid-template-columns: 1fr;
    gap: 20px;
    padding-top: 58px;
    padding-right: 16px;
    padding-bottom: 58px;
    padding-left: 16px;
  }

  .tutorial-step__rail {
    align-items: flex-start;
  }

  .tutorial-step__line {
    display: none;
  }

  .finish-list article {
    grid-template-columns: 34px minmax(0, 1fr);
    gap: 12px;
  }

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

  .finish-actions .button {
    width: 100%;
  }
}