:root {
  --tutorial-rail-width: 112px;
  --tutorial-copy-width: 800px;
  --tutorial-route-width: 360px;
  --tutorial-grid-size: 48px;
  --tutorial-anchor-offset: 24px;
}

.tutorial-hero {
  min-height: calc(100vh - var(--header-height));
  padding-top: clamp(72px, 9vw, 128px);
  background:
    linear-gradient(to bottom, rgba(var(--color-accent-rgb), .025), var(--color-transparent) 42%),
    repeating-linear-gradient(90deg, var(--color-transparent) 0 calc(var(--tutorial-grid-size) - 1px), rgba(var(--color-accent-rgb), .025) calc(var(--tutorial-grid-size) - 1px) var(--tutorial-grid-size));
}

.tutorial-hero::before {
  position: absolute;
  top: 0;
  left: 67%;
  width: 1px;
  height: 58%;
  content: "";
  background: linear-gradient(to bottom, var(--color-transparent), rgba(var(--color-accent-rgb), .72));
}

.tutorial-hero::after {
  position: absolute;
  top: 58%;
  right: 0;
  left: 0;
  height: 1px;
  content: "";
  background: linear-gradient(90deg, var(--color-transparent), rgba(var(--color-accent-rgb), .16) 35%, rgba(var(--color-accent-rgb), .62) 67%, var(--color-transparent));
}

.tutorial-hero-grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, var(--tutorial-route-width));
  align-items: end;
  gap: clamp(48px, 8vw, 112px);
}

.tutorial-intro h1 {
  max-width: 720px;
  margin-top: 20px;
}

.tutorial-intro .lede {
  margin-top: 24px;
}

.tutorial-intro .button-row {
  margin-top: 30px;
}

.tutorial-route {
  border: var(--line-thin) solid rgba(var(--color-accent-rgb), .28);
  background: rgba(var(--color-panel-rgb), .92);
}

.tutorial-route > .mono-label {
  padding: 16px 20px;
  border-bottom: var(--line-thin) solid var(--color-line);
}

.route-list {
  list-style: none;
}

.route-list li + li {
  border-top: var(--line-thin) solid var(--color-line);
}

.route-list a {
  display: flex;
  min-height: 58px;
  align-items: center;
  gap: 18px;
  padding: 13px 20px;
  color: var(--color-text-muted);
  transition: color var(--transition-fast), background var(--transition-fast);
}

.route-list a:hover {
  background: var(--color-panel-raised);
  color: var(--color-text);
}

.route-list span {
  color: var(--color-accent);
  font: .72rem/1.5 var(--font-mono);
}

.route-status {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 13px 20px;
  border-top: var(--line-thin) solid var(--color-line);
  color: var(--color-text-muted);
  font: .69rem/1.5 var(--font-mono);
}

.route-status-dot {
  width: 7px;
  height: 7px;
  flex: 0 0 auto;
  background: var(--color-success);
}

.tutorial-toc {
  position: relative;
  z-index: 3;
  margin-top: clamp(56px, 8vw, 104px);
}

.tutorial-layout {
  display: grid;
  grid-template-columns: var(--tutorial-rail-width) minmax(0, var(--tutorial-copy-width));
  gap: clamp(32px, 6vw, 84px);
  justify-content: center;
}

.tutorial-rail {
  display: flex;
  min-height: 180px;
  align-items: flex-start;
  flex-direction: column;
  gap: 16px;
  border-right: var(--line-thin) solid var(--color-line);
}

.step-index {
  font: 400 1.1rem/1.4 var(--font-mono);
}

.step-state {
  color: var(--color-text-muted);
  font: .65rem/1.4 var(--font-mono);
  letter-spacing: .14em;
  writing-mode: vertical-rl;
}

.tutorial-prose {
  max-width: var(--tutorial-copy-width);
}

.tutorial-prose h2 {
  margin-top: 18px;
}

.tutorial-prose > .callout {
  margin-top: 32px;
  margin-bottom: 32px;
}

.tutorial-prose h3 {
  padding-top: 8px;
  border-top: var(--line-thin) solid var(--color-line);
}

.tutorial-prose a {
  overflow-wrap: anywhere;
}

#before-start,
#step-import,
#step-mode,
#step-connect,
#step-verify,
#quick-fixes {
  scroll-margin-top: calc(var(--header-height) + var(--tutorial-anchor-offset));
}

.tutorial-section-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 32px;
  margin-bottom: 48px;
}

.tutorial-section-head h2 {
  margin-top: 18px;
}

.tutorial-section-head > p {
  max-width: 470px;
  color: var(--color-text-muted);
}

.tutorial-next {
  margin-top: clamp(56px, 8vw, 96px);
}

@media (max-width: 860px) {
  .tutorial-hero-grid {
    grid-template-columns: 1fr;
    align-items: start;
    gap: 48px;
  }

  .tutorial-route {
    width: 100%;
    max-width: 560px;
  }

  .tutorial-hero::before {
    left: 82%;
  }

  .tutorial-hero::after {
    top: 48%;
  }

  .tutorial-layout {
    grid-template-columns: 72px minmax(0, 1fr);
    gap: 30px;
  }

  .tutorial-section-head {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 640px) {
  :root {
    --tutorial-anchor-offset: 16px;
  }

  .tutorial-hero {
    min-height: 0;
    padding-top: 64px;
  }

  .tutorial-hero::before {
    left: 88%;
    height: 34%;
  }

  .tutorial-hero::after {
    top: 34%;
  }

  .tutorial-hero-grid {
    gap: 40px;
  }

  .tutorial-route {
    max-width: none;
  }

  .tutorial-toc {
    margin-top: 48px;
  }

  .tutorial-layout {
    grid-template-columns: 1fr;
    gap: 26px;
  }

  .tutorial-rail {
    min-height: 0;
    align-items: center;
    flex-direction: row;
    gap: 13px;
    padding-bottom: 12px;
    border-right: 0;
    border-bottom: var(--line-thin) solid var(--color-line);
  }

  .step-state {
    writing-mode: horizontal-tb;
  }

  .tutorial-prose h2 {
    margin-top: 14px;
  }

  .tutorial-section-head {
    margin-bottom: 34px;
  }
}