.tutorial-hero {
  position: relative;
  overflow-x: clip;
  border-bottom: 1px solid var(--color-border);
  isolation: isolate;
}

.tutorial-hero::before {
  position: absolute;
  inset: 0;
  z-index: -1;
  content: "";
  background:
    radial-gradient(55% 70% at 86% 20%, var(--color-field-sky), transparent 72%),
    radial-gradient(52% 75% at 10% 92%, var(--color-field-mint), transparent 74%);
}

.tutorial-hero__inner {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(340px, 0.9fr);
  gap: clamp(40px, 7vw, 88px);
  align-items: center;
}

.tutorial-hero__copy {
  max-width: 720px;
}

.tutorial-hero h1 {
  max-width: 700px;
  font-size: clamp(34px, 4vw, 48px);
}

.tutorial-hero__lead {
  max-width: 680px;
  margin-bottom: 28px;
  color: var(--color-muted);
  font-size: clamp(17px, 1.8vw, 20px);
  line-height: 1.8;
}

.tutorial-route {
  position: relative;
  display: grid;
  gap: 1px;
  padding: 1px;
  overflow: hidden;
  background: var(--color-border);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-card);
}

.tutorial-route__item {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  min-height: 92px;
  padding: 20px 24px;
  align-items: center;
  column-gap: 14px;
  color: var(--color-text);
  background: var(--color-panel);
}

.tutorial-route__item span {
  grid-row: 1 / 3;
  color: var(--color-accent-dark);
  font: 700 13px var(--font-mono);
}

.tutorial-route__item strong {
  line-height: 1.3;
}

.tutorial-route__item small {
  margin-top: 4px;
  color: var(--color-muted);
  font-size: 13px;
}

.platform-note {
  padding-top: 28px;
  padding-bottom: 28px;
}

.platform-note__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.platform-note__inner strong {
  display: block;
  margin-bottom: 4px;
}

.platform-note__inner p {
  margin-bottom: 0;
  color: var(--color-muted);
  font-size: 14px;
}

.platform-note__links {
  display: flex;
  max-width: 100%;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 6px;
}

.platform-note__links a {
  display: inline-flex;
  min-height: 36px;
  align-items: center;
  justify-content: center;
  padding: 6px 11px;
  color: var(--color-muted);
  border-radius: var(--radius-xs);
  font-size: 13px;
  font-weight: 700;
}

.platform-note__links a:hover,
.platform-note__links a[aria-current="page"] {
  color: var(--color-accent-dark);
  background: var(--color-accent-soft);
}

.tutorial-layout {
  max-width: calc(var(--reading-width) + var(--gutter) * 2);
}

.tutorial-prose {
  color: var(--color-text);
}

.tutorial-chapter {
  padding-top: 28px;
  padding-bottom: 64px;
  border-bottom: 1px solid var(--color-border);
  scroll-margin-top: calc(var(--header-height) + 80px);
}

.tutorial-chapter:first-of-type {
  padding-top: 0;
}

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

.tutorial-chapter__head {
  margin-bottom: 28px;
}

.tutorial-chapter__head h2 {
  margin-bottom: 0;
}

.tutorial-step-label {
  display: inline-flex;
  min-height: 29px;
  margin-bottom: 14px;
  padding: 4px 11px;
  align-items: center;
  color: var(--color-accent-dark);
  background: var(--color-accent-soft);
  border: 1px solid var(--color-accent-ring);
  border-radius: var(--radius-pill);
  font: 700 12px var(--font-mono);
}

.tutorial-prose p {
  color: var(--color-muted);
  line-height: 1.9;
}

.tutorial-prose p strong {
  color: var(--color-text);
}

.tutorial-finish {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 28px;
  margin-top: 52px;
  align-items: center;
}

.tutorial-finish h2 {
  margin-bottom: 10px;
  font-size: clamp(25px, 3vw, 34px);
}

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

.tutorial-finish .button-row {
  justify-content: flex-end;
}

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

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

  .tutorial-route__item {
    min-height: 108px;
  }

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

  .tutorial-finish .button-row {
    justify-content: flex-start;
  }
}

@media (max-width: 700px) {
  .tutorial-hero h1 {
    font-size: clamp(26px, 7.5vw, 30px);
  }

  .platform-note__inner {
    align-items: flex-start;
    flex-direction: column;
  }

  .platform-note__links {
    width: 100%;
    justify-content: flex-start;
  }

  .tutorial-route {
    grid-template-columns: 1fr;
    border-radius: var(--radius-md);
  }

  .tutorial-route__item {
    min-height: 84px;
    padding: 17px 20px;
  }

  .tutorial-chapter {
    padding-bottom: 52px;
  }
}

@media (max-width: 420px) {
  .platform-note__links {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .platform-note__links a {
    width: 100%;
  }
}