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

.tutorial-hero::before {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, transparent, var(--color-accent-glow-soft), transparent),
    radial-gradient(circle at 78% 42%, var(--color-accent-glow-soft), transparent 30%);
  content: "";
  opacity: 0.42;
  pointer-events: none;
}

.tutorial-hero-grid {
  position: relative;
  display: grid;
  min-width: 0;
  grid-template-columns: minmax(0, 1.12fr) minmax(320px, 0.72fr);
  align-items: center;
  gap: 72px;
  min-height: 620px;
}

.tutorial-hero-copy,
.tutorial-sequence {
  min-width: 0;
}

.tutorial-hero-copy h1 {
  max-width: 760px;
  margin-top: 22px;
  font-size: clamp(52px, 5vw, 68px);
}

.tutorial-hero-lede {
  max-width: 700px;
  margin-bottom: 28px;
  color: var(--color-text-muted);
  font-size: 18px;
}

.tutorial-fact-row {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin-top: 28px;
}

.tutorial-sequence {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(circle, var(--color-dot-canvas) 1px, transparent 1px),
    var(--color-panel);
  background-size: 20px 20px;
  box-shadow: var(--shadow-panel);
}

.tutorial-sequence::after {
  position: absolute;
  top: 58px;
  bottom: 32px;
  left: 45px;
  width: 1px;
  background: linear-gradient(var(--color-accent-line), var(--color-accent-glow-soft));
  content: "";
}

.tutorial-sequence-label {
  margin-bottom: 22px;
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
}

.tutorial-sequence-list {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.tutorial-sequence-list li {
  display: grid;
  min-width: 0;
  grid-template-columns: 18px minmax(0, 1fr);
  gap: 6px 14px;
  align-items: center;
  padding: 12px 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-panel-raised);
}

.tutorial-sequence-list li::before {
  width: 8px;
  height: 8px;
  grid-row: 1 / span 2;
  border-radius: var(--radius-pill);
  background: var(--color-accent);
  box-shadow: 0 0 10px var(--color-accent-glow);
  content: "";
}

.tutorial-sequence-list span {
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
}

.tutorial-sequence-list strong {
  min-width: 0;
  font-size: 14px;
  overflow-wrap: anywhere;
}

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

.tutorial-flow {
  position: relative;
  padding-top: 72px;
  padding-bottom: 24px;
}

.tutorial-flow > .toc-tabs {
  margin-bottom: 72px;
}

.tutorial-step {
  display: grid;
  min-width: 0;
  grid-template-columns: 132px minmax(0, 820px);
  justify-content: center;
  gap: 52px;
  padding-top: 34px;
  padding-bottom: 92px;
}

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

.tutorial-step-mark {
  position: sticky;
  top: var(--toc-offset);
  align-self: start;
  padding-top: 10px;
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-align: right;
}

.tutorial-step-mark::after {
  display: block;
  width: 44px;
  height: 1px;
  margin-top: 13px;
  margin-left: auto;
  background: var(--color-accent-line);
  box-shadow: 0 0 8px var(--color-accent-glow-soft);
  content: "";
}

.tutorial-step-body {
  min-width: 0;
}

.tutorial-step-body h2 {
  max-width: 760px;
}

.tutorial-step-kicker {
  margin-bottom: 10px;
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
}

.tutorial-action {
  display: grid;
  min-width: 0;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: center;
  gap: 20px;
  margin-top: 34px;
  padding-top: 24px;
  border-top: 1px dashed var(--color-border);
}

.tutorial-action p {
  color: var(--color-text-muted);
  font-size: 13px;
}

.platform-instructions {
  display: grid;
  min-width: 0;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 34px;
  margin-bottom: 28px;
}

.platform-instruction {
  min-width: 0;
  padding: 24px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-panel);
  box-shadow: var(--shadow-card);
}

.platform-instruction h3 {
  font-size: 21px;
}

.platform-instruction p {
  font-size: 14px;
}

.platform-instruction-label {
  margin-bottom: 12px;
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
}

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

.tutorial-next-panel {
  display: grid;
  min-width: 0;
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
  gap: 54px;
  padding: 38px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(circle at 88% 18%, var(--color-accent-glow-soft), transparent 28%),
    var(--color-panel);
  box-shadow: var(--shadow-panel);
}

.tutorial-next-panel h2 {
  margin-top: 18px;
  font-size: clamp(30px, 3vw, 42px);
}

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

.tutorial-next-links {
  display: grid;
  min-width: 0;
  gap: 10px;
}

.tutorial-next-links a {
  display: grid;
  min-width: 0;
  grid-template-columns: minmax(110px, 0.42fr) minmax(0, 1fr);
  align-items: center;
  gap: 18px;
  min-height: 72px;
  padding: 15px 18px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-panel-raised);
  transition:
    border-color var(--transition-fast),
    transform var(--transition-fast);
}

.tutorial-next-links a:hover {
  border-color: var(--color-accent-line);
  transform: translateX(2px);
}

.tutorial-next-links strong {
  font-size: 14px;
}

.tutorial-next-links span {
  min-width: 0;
  color: var(--color-text-muted);
  font-size: 13px;
}

@media (max-width: 960px) {
  .tutorial-hero-grid {
    grid-template-columns: 1fr;
    gap: 42px;
    min-height: 0;
    padding-top: 72px;
    padding-bottom: 72px;
  }

  .tutorial-sequence {
    max-width: 680px;
  }

  .tutorial-step {
    grid-template-columns: 88px minmax(0, 1fr);
    gap: 32px;
  }

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

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

  .tutorial-hero-copy h1 {
    font-size: clamp(28px, 9vw, 40px);
  }

  .tutorial-hero-lede {
    font-size: 16px;
  }

  .tutorial-step {
    grid-template-columns: 1fr;
    gap: 12px;
    padding-bottom: 72px;
  }

  .tutorial-step-mark {
    position: static;
    padding-top: 0;
    text-align: left;
  }

  .tutorial-step-mark::after {
    margin-left: 0;
  }

  .platform-instructions {
    grid-template-columns: 1fr;
  }

  .tutorial-next-panel {
    padding: 26px;
  }
}

@media (max-width: 640px) {
  .tutorial-hero-grid {
    padding-top: 52px;
    padding-bottom: 56px;
  }

  .tutorial-fact-row {
    display: grid;
    grid-template-columns: 1fr;
  }

  .tutorial-fact-row .fact-chip {
    width: fit-content;
  }

  .tutorial-sequence {
    padding: 20px;
  }

  .tutorial-sequence::after {
    left: 37px;
  }

  .tutorial-flow {
    padding-top: 54px;
  }

  .tutorial-flow > .toc-tabs {
    margin-bottom: 54px;
  }

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

  .tutorial-action .btn-primary,
  .tutorial-action .btn-ghost {
    width: 100%;
  }

  .platform-instruction {
    padding: 20px;
  }

  .tutorial-next-panel {
    padding: 20px;
  }

  .tutorial-next-links a {
    grid-template-columns: 1fr;
    gap: 4px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .tutorial-next-links a:hover {
    transform: none;
  }
}