.tutorial-hero {
  position: relative;
  max-width: 100%;
  padding-top: clamp(52px, 7vw, 92px);
  padding-bottom: clamp(56px, 8vw, 104px);
  background-image:
    radial-gradient(circle at 82% 30%, var(--color-accent-a10), transparent 34%),
    radial-gradient(var(--color-grain) .6px, transparent .7px),
    linear-gradient(180deg, var(--color-hero-top), var(--color-hero-bottom));
  background-size: auto, 3px 3px, 100% 100%;
  overflow-x: clip;
}

.tutorial-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, .78fr);
  align-items: center;
  gap: clamp(40px, 7vw, 96px);
}

.tutorial-hero-copy {
  max-width: 700px;
}

.tutorial-hero h1 {
  max-width: 11em;
  margin-bottom: 22px;
}

.tutorial-lead {
  max-width: 38em;
  margin-bottom: 28px;
  color: var(--color-muted);
  font-size: 18px;
}

.tutorial-route {
  position: relative;
  padding: 34px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-panel);
  box-shadow: var(--shadow-raised);
}

.tutorial-route::before {
  position: absolute;
  top: 0;
  right: 20px;
  left: 20px;
  height: 5px;
  border-radius: 0 0 var(--radius-xs) var(--radius-xs);
  background: linear-gradient(90deg, var(--color-accent), var(--color-accent-bright));
  content: "";
}

.tutorial-route svg {
  width: 100%;
  margin-top: 18px;
  margin-bottom: 18px;
  color: var(--color-accent);
}

.route-node {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding-bottom: 15px;
  border-bottom: 1px solid var(--color-border);
}

.route-node-end {
  padding-top: 15px;
  padding-bottom: 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 0;
}

.route-node span {
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
}

.route-node strong {
  text-align: right;
}

.tutorial-article {
  padding-top: 44px;
  padding-bottom: var(--section-space);
}

.guide-section {
  display: grid;
  grid-template-columns: minmax(230px, .48fr) minmax(0, 1fr);
  gap: clamp(34px, 6vw, 84px);
  padding-top: clamp(58px, 7vw, 92px);
  padding-bottom: clamp(58px, 7vw, 92px);
  border-bottom: 1px solid var(--color-border);
}

.guide-section:last-child {
  border-bottom: 0;
}

.guide-heading {
  position: relative;
  align-self: start;
}

.guide-heading h2 {
  margin-bottom: 0;
  font-size: clamp(30px, 3.4vw, 46px);
}

.step-tag {
  display: inline-flex;
  min-height: 30px;
  align-items: center;
  margin-bottom: 24px;
  padding: 4px 11px;
  border: 1px solid var(--color-accent-a22);
  border-radius: var(--radius-pill);
  background: var(--color-accent-a08);
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .08em;
}

.guide-content {
  max-width: 820px;
}

.guide-content > p,
.platform-note p,
.check-card p {
  color: var(--color-muted);
}

.guide-content > p {
  margin-bottom: 1.25em;
  font-size: 17px;
  line-height: 1.85;
}

.guide-content a:not(.btn):not(.text-link) {
  color: var(--color-accent);
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.guide-content .callout {
  margin-bottom: 28px;
  line-height: 1.8;
}

.action-panel,
.next-guide {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin-top: 30px;
  padding: 20px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-panel);
  box-shadow: var(--shadow-panel);
}

.action-panel strong,
.action-panel span,
.next-guide strong,
.next-guide span {
  display: block;
}

.action-panel span,
.next-guide span {
  margin-top: 4px;
  color: var(--color-muted);
  font-size: 14px;
}

.action-panel .btn {
  flex-shrink: 0;
}

.platform-notes {
  display: grid;
  gap: 16px;
  margin-top: 30px;
  margin-bottom: 28px;
}

.platform-note {
  padding: clamp(20px, 3vw, 30px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-panel);
}

.platform-note-head {
  display: flex;
  align-items: center;
  gap: 13px;
  margin-bottom: 16px;
}

.platform-note-head h3 {
  margin-bottom: 0;
  font-size: 22px;
}

.platform-letter {
  display: grid;
  width: 42px;
  height: 42px;
  flex: 0 0 42px;
  place-items: center;
  border-radius: var(--radius-sm);
  background: var(--color-accent-a10);
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 800;
}

.platform-note p {
  margin-bottom: 12px;
  line-height: 1.8;
}

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

.check-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 28px;
  margin-bottom: 28px;
}

.check-card {
  padding: 20px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-panel);
}

.check-card strong {
  display: block;
  margin-bottom: 8px;
}

.check-card p {
  margin-bottom: 0;
  font-size: 14px;
  line-height: 1.7;
}

.next-guide {
  background: var(--color-accent-a06);
  box-shadow: none;
}

.next-guide .text-link {
  flex-shrink: 0;
}

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

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

  .guide-section {
    grid-template-columns: 1fr;
    gap: 26px;
  }

  .guide-heading {
    max-width: 700px;
  }
}

@media (max-width: 768px) {
  .tutorial-hero {
    padding-top: 44px;
    padding-bottom: 64px;
  }

  .tutorial-article {
    padding-top: 28px;
    padding-bottom: 64px;
  }

  .guide-section {
    padding-top: 56px;
    padding-bottom: 56px;
  }

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

@media (max-width: 640px) {
  .tutorial-route {
    padding: 26px 20px;
  }

  .route-node {
    align-items: flex-start;
    flex-direction: column;
    gap: 4px;
  }

  .route-node strong {
    text-align: left;
  }

  .action-panel,
  .next-guide {
    align-items: stretch;
    flex-direction: column;
  }

  .action-panel .btn {
    width: 100%;
  }

  .next-guide .text-link {
    min-height: 32px;
  }

  .guide-content > p {
    font-size: 16px;
  }
}