:root {
  --tutorial-copy-width: 760px;
  --tutorial-heading-width: 300px;
  --tutorial-board-width: 520px;
  --tutorial-hero-gap: clamp(36px, 6vw, 84px);
  --tutorial-row-gap: clamp(28px, 5vw, 64px);
  --tutorial-board-line: var(--color-sign-line);
  --tutorial-board-text: var(--color-sign-soft);
}

.tutorial-hero {
  position: relative;
  max-width: 100%;
  overflow-x: clip;
  padding-top: clamp(64px, 8vw, 104px);
  padding-bottom: clamp(68px, 9vw, 116px);
  background:
    radial-gradient(ellipse at top right, var(--color-horizon-glow), var(--color-clear)),
    linear-gradient(180deg, var(--color-sky), var(--color-bg) 62%, var(--color-road-mid));
}

.tutorial-hero::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: 34%;
  pointer-events: none;
  background:
    linear-gradient(115deg, var(--color-clear) 48%, var(--color-grid) 49%, var(--color-clear) 50%),
    linear-gradient(65deg, var(--color-clear) 48%, var(--color-grid) 49%, var(--color-clear) 50%);
  background-size: 84px 100%;
  opacity: .65;
}

.tutorial-hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(360px, var(--tutorial-board-width));
  gap: var(--tutorial-hero-gap);
  align-items: center;
}

.tutorial-hero-copy {
  max-width: 660px;
}

.tutorial-hero h1 {
  margin-top: 20px;
  margin-bottom: 20px;
}

.tutorial-title-tail {
  color: var(--color-accent);
}

.tutorial-hero-lede {
  max-width: 620px;
  margin-bottom: 0;
  font-size: 18px;
  line-height: 1.8;
}

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

.tutorial-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  margin-top: 28px;
  margin-bottom: 0;
  padding-left: 0;
  list-style: none;
}

.tutorial-facts li {
  display: inline-flex;
  min-height: 28px;
  align-items: center;
  gap: 9px;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 12px;
}

.tutorial-route-board {
  position: relative;
  width: 100%;
  max-width: var(--tutorial-board-width);
  padding: 28px;
  border: 1px solid var(--color-sign-highlight);
  border-radius: var(--radius-medium);
  color: var(--color-white);
  background: linear-gradient(135deg, var(--color-sign), var(--color-sign-end));
  box-shadow: inset 0 1px 0 var(--color-sign-highlight), 0 30px 54px var(--color-shadow);
}

.tutorial-route-board::before,
.tutorial-route-board::after {
  content: "";
  position: absolute;
  top: 100%;
  width: 6px;
  height: 70px;
  background: linear-gradient(180deg, var(--color-sign-end), var(--color-sign));
}

.tutorial-route-board::before {
  left: 16%;
}

.tutorial-route-board::after {
  right: 16%;
}

.tutorial-route-head {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--tutorial-board-line);
  color: var(--tutorial-board-text);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
}

.tutorial-route-line {
  display: flex;
  min-height: 96px;
  align-items: center;
  justify-content: space-between;
  gap: 7px;
  overflow: hidden;
  color: var(--color-white);
  font-size: 13px;
}

.tutorial-route-line i {
  width: 9px;
  height: 9px;
  flex: 0 0 auto;
  border: 2px solid var(--color-white);
  border-radius: 50%;
  background: var(--color-sign-end);
}

.tutorial-route-line i:first-child {
  border-color: var(--color-accent);
  background: var(--color-accent);
  box-shadow: 0 0 0 4px var(--color-accent-shadow-soft);
}

.tutorial-route-line span {
  position: relative;
  flex: 0 0 auto;
}

.tutorial-route-line span::after {
  content: "";
  position: absolute;
  top: 50%;
  left: calc(100% + 8px);
  width: 20px;
  height: 1px;
  background: var(--tutorial-board-line);
}

.tutorial-route-line span:last-child::after {
  display: none;
}

.tutorial-route-lanes {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tutorial-route-lanes span {
  display: inline-flex;
  min-height: 30px;
  align-items: center;
  padding: 5px 11px;
  border: 1px solid var(--color-sign-glass-border);
  border-radius: var(--radius-small);
  color: var(--tutorial-board-text);
  background: var(--color-sign-glass);
  font-family: var(--font-mono);
  font-size: 11px;
}

.tutorial-main {
  background: var(--color-bg);
}

.tutorial-document {
  position: relative;
}

.tutorial-document > .callout {
  max-width: 940px;
  margin-bottom: 48px;
}

.guide-section {
  display: grid;
  grid-template-columns: minmax(220px, var(--tutorial-heading-width)) minmax(0, var(--tutorial-copy-width));
  gap: var(--tutorial-row-gap);
  justify-content: space-between;
  padding-top: clamp(52px, 7vw, 84px);
  padding-bottom: clamp(52px, 7vw, 84px);
  border-bottom: 1px solid var(--color-border);
}

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

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

.guide-heading h2 {
  margin-bottom: 0;
  font-size: clamp(30px, 3.4vw, 42px);
}

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

.guide-copy p {
  font-size: 17px;
  line-height: 1.95;
}

.guide-copy a:not(.btn) {
  color: var(--color-accent-dark);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.guide-copy pre {
  margin-top: 24px;
  margin-bottom: 26px;
}

.guide-action {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 28px;
}

.guide-section-wide {
  grid-template-columns: minmax(220px, var(--tutorial-heading-width)) minmax(0, 1fr);
}

.guide-section-wide .guide-copy {
  max-width: none;
}

.client-guide-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-top: 30px;
  margin-bottom: 30px;
}

.client-guide {
  padding: 26px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-medium);
  background: var(--color-panel);
  box-shadow: inset 0 1px 0 var(--color-white), 0 16px 34px var(--color-shadow-soft);
}

.client-guide-label {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 18px;
}

.client-guide-label .platform-icon {
  width: 48px;
  height: 48px;
  margin-bottom: 0;
}

.client-guide-label h3 {
  margin-bottom: 0;
  font-family: var(--font-display);
  font-size: 25px;
  font-weight: 400;
}

.client-guide p {
  margin-bottom: 0;
  font-size: 15px;
  line-height: 1.85;
}

.guide-final-callout {
  margin-top: 36px;
  margin-bottom: 0;
}

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

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

  .tutorial-route-board {
    max-width: 680px;
  }

  .guide-section,
  .guide-section-wide {
    grid-template-columns: minmax(190px, 28%) minmax(0, 1fr);
  }
}

@media (max-width: 760px) {
  .tutorial-hero {
    padding-top: 52px;
    padding-bottom: 74px;
  }

  .tutorial-route-board {
    margin-bottom: 64px;
  }

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

  .client-guide-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .tutorial-hero::after {
    background-size: 52px 100%;
  }

  .tutorial-hero h1 {
    margin-top: 16px;
  }

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

  .tutorial-route-board {
    padding: 20px 16px;
  }

  .tutorial-route-board::before,
  .tutorial-route-board::after {
    height: 42px;
  }

  .tutorial-route-head {
    font-size: 10px;
  }

  .tutorial-route-line {
    min-height: 82px;
    gap: 5px;
  }

  .tutorial-route-line span {
    font-size: 11px;
  }

  .tutorial-route-line span::after {
    display: none;
  }

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

  .guide-section,
  .guide-section-wide {
    padding-top: 50px;
    padding-bottom: 50px;
  }

  .guide-copy p {
    font-size: 16px;
    line-height: 1.9;
  }

  .client-guide {
    padding: 22px 18px;
  }

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

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

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