:root {
  --tutorial-hero-gap: 58px;
  --tutorial-hero-min-height: 610px;
  --tutorial-board-padding: 30px;
  --tutorial-content-gap: 42px;
  --tutorial-step-space: 72px;
  --tutorial-copy-width: 900px;
  --tutorial-label-width: 118px;
  --tutorial-route-line: var(--color-white-faint);
  --tutorial-action-bg: var(--color-panel);
  --tutorial-board-text: var(--color-white);
  --tutorial-board-muted: var(--color-white-soft);
  --tutorial-index-bg: var(--color-route);
  --tutorial-index-text: var(--color-white);
}

.tutorial-main {
  overflow-x: clip;
}

.tutorial-hero {
  border-bottom: 1px solid var(--color-line);
  background: var(--color-canvas);
}

.tutorial-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(420px, .82fr);
  gap: var(--tutorial-hero-gap);
  min-height: var(--tutorial-hero-min-height);
  align-items: center;
  padding-top: 54px;
  padding-bottom: 62px;
}

.tutorial-hero-copy .lead {
  margin-bottom: 28px;
}

.tutorial-hero-copy .button-row {
  margin-bottom: 28px;
}

.tutorial-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  padding-top: 20px;
  border-top: 1px solid var(--color-line);
  color: var(--color-muted);
  font-size: 14px;
}

.tutorial-facts span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.tutorial-facts span::before {
  width: 7px;
  height: 7px;
  flex-shrink: 0;
  border-radius: var(--radius-pill);
  background: var(--color-accent);
  content: "";
}

.tutorial-route {
  overflow: hidden;
  border-radius: var(--radius-board);
  background: var(--color-route);
  box-shadow: var(--shadow-board);
  color: var(--tutorial-board-text);
}

.tutorial-route-strip {
  height: 4px;
  background: var(--color-accent);
}

.tutorial-route-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 20px var(--tutorial-board-padding);
  color: var(--tutorial-board-muted);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
}

.tutorial-route-status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--color-accent);
  font-family: var(--font-body);
  font-weight: 700;
  letter-spacing: 0;
}

.tutorial-route-status .status-dot {
  box-shadow: none;
}

.tutorial-route-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.tutorial-route-list li {
  display: grid;
  grid-template-columns: 74px minmax(0, 1fr) auto;
  gap: 20px;
  align-items: center;
  padding: 22px var(--tutorial-board-padding);
  border-top: 1px solid var(--tutorial-route-line);
}

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

.tutorial-route-list strong {
  color: var(--tutorial-board-text);
  font-size: 18px;
}

.tutorial-route-list b {
  color: var(--color-accent);
  font-size: 22px;
}

.tutorial-shell {
  padding-top: 46px;
  padding-bottom: var(--section-space);
}

.tutorial-shell > .toc-tabs {
  top: 10px;
}

.tutorial-content {
  max-width: var(--tutorial-copy-width);
  margin-inline: auto;
  padding-top: var(--tutorial-content-gap);
}

.tutorial-content > .callout {
  margin-top: 0;
  margin-bottom: var(--tutorial-step-space);
}

.guide-section {
  padding-top: 12px;
  padding-bottom: var(--tutorial-step-space);
  border-bottom: 1px solid var(--color-line);
}

.guide-section + .guide-section {
  padding-top: var(--tutorial-step-space);
}

.guide-section-head {
  display: grid;
  grid-template-columns: var(--tutorial-label-width) minmax(0, 1fr);
  gap: 26px;
  align-items: start;
  margin-bottom: 30px;
}

.guide-index {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  padding: 9px 12px;
  background: var(--tutorial-index-bg);
  color: var(--tutorial-index-text);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .05em;
}

.guide-section-head .section-kicker {
  margin-bottom: 8px;
}

.guide-section-head h2 {
  margin-bottom: 0;
}

.guide-copy {
  padding-left: calc(var(--tutorial-label-width) + 26px);
}

.guide-copy p {
  margin-bottom: 22px;
  line-height: 1.85;
}

.guide-action {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-top: 30px;
  padding: 18px;
  border-left: 3px solid var(--color-accent);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  background: var(--tutorial-action-bg);
}

.guide-action .button {
  flex-shrink: 0;
  background: var(--color-route);
  color: var(--color-white);
}

.guide-action span {
  color: var(--color-muted);
  font-size: 14px;
}

.platform-guide-list {
  margin-top: 36px;
  border-top: 3px solid var(--color-accent);
}

.platform-guide {
  display: grid;
  grid-template-columns: var(--tutorial-label-width) minmax(0, 1fr);
  gap: 26px;
  padding-top: 30px;
  padding-bottom: 30px;
  border-bottom: 1px solid var(--color-line);
}

.platform-guide-label {
  color: var(--color-route);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .04em;
}

.platform-guide h3 {
  font-size: 23px;
}

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

.guide-finish {
  margin-top: var(--tutorial-step-space);
  padding: 38px;
  border-radius: var(--radius-md);
  background: var(--color-route);
  color: var(--color-white);
  box-shadow: var(--shadow-board);
}

.guide-finish .section-kicker {
  color: var(--color-accent);
}

.guide-finish h2 {
  color: var(--color-white);
}

.guide-finish p {
  max-width: 760px;
  margin-bottom: 28px;
  color: var(--color-white-soft);
}

.guide-finish .btn-secondary {
  border-color: var(--color-white);
  background: var(--color-transparent);
  color: var(--color-white);
}

.guide-finish .btn-secondary:hover {
  background: var(--color-white-hover);
}

@media (max-width: 980px) {
  .tutorial-hero-grid {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .tutorial-route {
    width: min(100%, 720px);
  }
}

@media (max-width: 768px) {
  :root {
    --tutorial-hero-gap: 38px;
    --tutorial-board-padding: 20px;
    --tutorial-content-gap: 32px;
    --tutorial-step-space: 54px;
    --tutorial-label-width: 92px;
  }

  .tutorial-hero-grid {
    padding-top: 44px;
    padding-bottom: 52px;
  }

  .tutorial-shell {
    padding-top: 28px;
  }

  .guide-section-head {
    gap: 18px;
  }

  .guide-copy {
    padding-left: 0;
  }

  .platform-guide {
    gap: 18px;
  }

  .guide-finish {
    padding: 28px;
  }
}

@media (max-width: 560px) {
  :root {
    --tutorial-label-width: 100%;
  }

  .tutorial-route-head {
    align-items: flex-start;
    flex-direction: column;
    gap: 8px;
  }

  .tutorial-route-list li {
    grid-template-columns: 62px minmax(0, 1fr) auto;
    gap: 12px;
  }

  .tutorial-route-list strong {
    font-size: 16px;
  }

  .guide-section-head,
  .platform-guide {
    grid-template-columns: 1fr;
  }

  .guide-index {
    width: max-content;
    min-width: 78px;
  }

  .guide-action {
    align-items: flex-start;
    flex-direction: column;
  }

  .guide-action .button {
    width: 100%;
  }

  .platform-guide-label {
    display: inline-flex;
    width: max-content;
    padding-bottom: 6px;
    border-bottom: 2px solid var(--color-accent);
  }

  .guide-finish {
    padding: 24px;
  }
}