.tutorial-hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--color-line);
  background:
    radial-gradient(circle at 82% 18%, var(--color-focus-halo), transparent 28%),
    linear-gradient(180deg, var(--color-canvas), var(--color-panel));
}

.tutorial-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(var(--color-line) 1px, transparent 1px);
  background-size: 22px 22px;
  opacity: 0.48;
  pointer-events: none;
}

.tutorial-hero-grid {
  min-height: calc(100svh - var(--header-height));
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(360px, 0.75fr);
  gap: clamp(48px, 8vw, 112px);
  align-items: center;
  padding-top: clamp(72px, 9vw, 126px);
  padding-bottom: clamp(72px, 9vw, 126px);
}

.tutorial-hero-copy {
  max-width: 760px;
}

.tutorial-hero-copy h1 {
  max-width: 720px;
}

.tutorial-hero-copy .lead {
  margin-bottom: 30px;
}

.tutorial-fact-line {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
  margin: 30px 0 0;
  padding: 0;
  color: var(--color-ink-muted);
  font-size: 13px;
  font-weight: 750;
  list-style: none;
}

.tutorial-fact-line li {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.tutorial-route-card {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-large);
  background: var(--color-canvas);
  box-shadow: var(--shadow-lift);
  transform: rotate(1deg);
}

.tutorial-route-card::after {
  content: "";
  width: 180px;
  height: 180px;
  position: absolute;
  right: -72px;
  bottom: -82px;
  border-radius: var(--radius-pill);
  background: var(--color-accent);
  filter: blur(68px);
  opacity: 0.18;
  pointer-events: none;
}

.tutorial-route-head {
  min-height: 52px;
  display: flex;
  align-items: center;
  gap: 8px;
  padding-inline: 20px;
  border-bottom: 1px solid var(--color-line);
  background: var(--color-panel);
}

.tutorial-route-title {
  margin-left: 7px;
  color: var(--color-ink-muted);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
}

.tutorial-route-body {
  position: relative;
  display: grid;
  gap: 0;
  padding: 26px 28px 30px;
}

.tutorial-route-stop {
  min-height: 82px;
  position: relative;
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  color: var(--color-ink-muted);
}

.tutorial-route-stop:not(:last-child)::after {
  content: "";
  width: 2px;
  position: absolute;
  top: 25px;
  bottom: -5px;
  left: 11px;
  background: linear-gradient(var(--color-sky), var(--color-success));
}

.tutorial-route-marker {
  width: 24px;
  height: 24px;
  position: relative;
  z-index: 1;
  display: block;
  border: 6px solid var(--color-canvas);
  border-radius: var(--radius-pill);
  background: var(--color-sky);
  box-shadow: 0 0 0 1px var(--color-line);
}

.tutorial-route-stop:nth-child(2) .tutorial-route-marker {
  background: var(--color-success);
}

.tutorial-route-stop:nth-child(3) .tutorial-route-marker {
  background: var(--color-accent);
}

.tutorial-route-stop:nth-child(4) .tutorial-route-marker {
  background: var(--color-warning);
}

.tutorial-route-stop:nth-child(5) .tutorial-route-marker {
  background: var(--color-coral);
}

.tutorial-route-stop.is-current strong {
  color: var(--color-accent-deep);
}

.tutorial-route-stop strong,
.tutorial-route-stop small {
  display: block;
}

.tutorial-route-stop strong {
  color: var(--color-ink);
  font-size: 17px;
}

.tutorial-route-stop small {
  margin-top: 3px;
  font-size: 13px;
}

.tutorial-document {
  position: relative;
  padding-top: clamp(48px, 7vw, 88px);
  padding-bottom: var(--section-space);
}

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

.tutorial-section {
  position: relative;
  max-width: 940px;
  margin-inline: auto;
  padding-top: clamp(68px, 8vw, 108px);
  padding-bottom: clamp(34px, 5vw, 64px);
  border-bottom: 1px solid var(--color-line);
}

.tutorial-section:first-of-type {
  padding-top: 58px;
}

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

.tutorial-section-label {
  width: fit-content;
  margin-bottom: 15px;
  padding: 5px 11px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-pill);
  background: var(--color-panel);
  color: var(--color-accent-deep);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.tutorial-section h2 {
  max-width: 780px;
}

.tutorial-section > p,
.tutorial-platform p {
  color: var(--color-ink-muted);
  font-size: 17px;
  line-height: 1.85;
}

.tutorial-text-link {
  display: inline;
  color: var(--color-accent-deep);
  font-weight: 800;
  text-decoration: underline;
  text-decoration-color: var(--color-focus-halo);
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

.tutorial-text-link:hover {
  color: var(--color-accent);
  text-decoration-color: var(--color-accent);
}

.tutorial-inline-actions {
  margin-top: 30px;
}

.tutorial-platforms {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
  margin-top: 34px;
}

.tutorial-platform {
  min-width: 0;
  padding: clamp(24px, 3vw, 34px);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-large);
  background: var(--color-canvas);
  box-shadow: var(--shadow-card);
}

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

.tutorial-platform-head {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
}

.tutorial-platform-head .platform-icon {
  margin-bottom: 0;
}

.tutorial-platform-head h3 {
  margin: 0;
}

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

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

.tutorial-next {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 28px;
  align-items: center;
  margin-top: 44px;
}

.tutorial-next h3 {
  margin-top: 15px;
  margin-bottom: 8px;
  font-size: 24px;
}

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

@media (max-width: 960px) {
  .tutorial-hero-grid {
    min-height: auto;
    grid-template-columns: 1fr;
  }

  .tutorial-route-card {
    width: min(100%, 620px);
    transform: none;
  }
}

@media (max-width: 768px) {
  .tutorial-hero-grid {
    gap: 42px;
    padding-top: 64px;
    padding-bottom: 68px;
  }

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

  .tutorial-platform:last-child {
    grid-column: auto;
  }

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

  .tutorial-next .button-row {
    width: 100%;
  }
}

@media (max-width: 520px) {
  .tutorial-route-body {
    padding-inline: 20px;
  }

  .tutorial-fact-line {
    display: grid;
  }

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

  .tutorial-platform {
    border-radius: var(--radius-card);
  }
}

@media (prefers-reduced-motion: reduce) {
  .tutorial-route-card {
    transform: none;
  }
}