.tutorial-hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--color-line);
  padding-top: clamp(70px, 9vw, 118px);
  padding-bottom: clamp(62px, 8vw, 104px);
}

.tutorial-hero::before {
  position: absolute;
  top: 84px;
  left: 50%;
  width: min(88vw, 980px);
  height: 460px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-xl);
  content: "";
  opacity: 0.58;
  pointer-events: none;
  transform: translateX(-50%) rotate(-2deg);
}

.tutorial-orbit {
  position: absolute;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-pill);
  pointer-events: none;
}

.tutorial-orbit-left {
  top: 260px;
  left: -190px;
  width: 420px;
  height: 420px;
}

.tutorial-orbit-right {
  right: -220px;
  bottom: -130px;
  width: 510px;
  height: 510px;
}

.tutorial-hero-inner {
  position: relative;
  z-index: 1;
  text-align: center;
}

.tutorial-hero h1 {
  max-width: 900px;
  margin-inline: auto;
}

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

.tutorial-hero-actions {
  margin-bottom: 24px;
}

.tutorial-facts {
  display: flex;
  max-width: 920px;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0 auto 48px;
}

.journey-map {
  display: grid;
  max-width: 1040px;
  grid-template-columns: minmax(0, 1fr) 52px minmax(0, 1fr) 52px minmax(0, 1fr) 52px minmax(0, 1fr);
  align-items: center;
  margin-inline: auto;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-xl);
  background: var(--color-canvas);
  padding: 22px;
  box-shadow: var(--shadow-window);
  text-align: left;
}

.journey-node {
  display: grid;
  min-height: 126px;
  align-content: center;
  gap: 5px;
  border-radius: var(--radius-md);
  background: var(--color-panel);
  padding: 18px;
}

.journey-marker {
  width: max-content;
  border-radius: var(--radius-pill);
  background: var(--color-primary-soft);
  padding: 3px 10px;
  color: var(--color-primary);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
}

.journey-node strong {
  font-size: 15px;
}

.journey-node small {
  color: var(--color-muted);
}

.journey-line {
  position: relative;
  display: block;
  height: 1px;
  background: var(--color-line);
}

.journey-line::after {
  position: absolute;
  top: 50%;
  right: 0;
  width: 7px;
  height: 7px;
  border-top: 1px solid var(--color-primary);
  border-right: 1px solid var(--color-primary);
  content: "";
  transform: translateY(-50%) rotate(45deg);
}

.tutorial-article {
  position: relative;
  padding-top: 34px;
  padding-bottom: var(--section-space);
}

.tutorial-callout {
  margin-top: 54px;
  margin-bottom: 0;
}

.guide-step {
  display: grid;
  grid-template-columns: 190px minmax(0, 1fr);
  gap: clamp(34px, 6vw, 82px);
  border-bottom: 1px solid var(--color-line);
  padding-top: clamp(68px, 8vw, 108px);
  padding-bottom: clamp(68px, 8vw, 108px);
}

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

.guide-step-aside {
  position: relative;
  padding-top: 7px;
}

.guide-step-aside::after {
  position: absolute;
  top: 54px;
  bottom: 0;
  left: 15px;
  width: 1px;
  background: var(--color-line);
  content: "";
}

.guide-step-label {
  position: relative;
  z-index: 1;
  display: inline-flex;
  min-height: 31px;
  align-items: center;
  border: 1px solid var(--color-focus-halo);
  border-radius: var(--radius-pill);
  background: var(--color-canvas);
  padding: 4px 13px;
  color: var(--color-primary);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  box-shadow: var(--shadow-chip);
}

.guide-step-aside p {
  margin-top: 14px;
  color: var(--color-muted);
  font-size: 13px;
  line-height: 1.6;
}

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

.guide-step-content > .badge {
  margin-bottom: 15px;
}

.guide-step-content h2 {
  margin-bottom: 24px;
  font-size: clamp(31px, 4vw, 46px);
}

.guide-step-content p {
  color: var(--color-muted);
}

.guide-step-content p + p {
  margin-top: 18px;
}

.guide-step-content a:not(.button) {
  color: var(--color-primary);
  font-weight: 650;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.guide-step-content pre {
  margin-top: 24px;
  margin-bottom: 24px;
}

.guide-inline-action {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 30px;
  border-top: 1px solid var(--color-line);
  padding-top: 24px;
}

.guide-inline-action > span {
  color: var(--color-muted);
  font-size: 13px;
}

.guide-inline-action .guide-text-link {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  margin-left: auto;
}

.platform-instructions {
  display: grid;
  gap: 18px;
  margin: 30px 0;
}

.platform-instruction {
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  background: var(--color-canvas);
  padding: clamp(22px, 4vw, 30px);
  box-shadow: var(--shadow-card);
}

.platform-instruction:nth-child(even) {
  background: var(--color-panel);
}

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

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

.platform-letter {
  display: inline-flex;
  width: 38px;
  height: 38px;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  color: var(--color-white-soft);
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 800;
  box-shadow: var(--shadow-primary);
}

.next-reading {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-top: 34px;
}

.next-reading article {
  display: flex;
  min-height: 240px;
  flex-direction: column;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  background: var(--color-panel);
  padding: 26px;
}

.next-reading article:nth-child(even) {
  background: var(--color-canvas);
  box-shadow: var(--shadow-card);
}

.next-reading-label {
  margin-bottom: 17px;
  color: var(--color-primary);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.05em;
}

.next-reading h3 {
  font-size: 22px;
}

.next-reading p {
  font-size: 14px;
}

.next-reading a {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  margin-top: auto;
  padding-top: 15px;
}

@media (max-width: 960px) {
  .journey-map {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
  }

  .journey-line {
    display: none;
  }

  .guide-step {
    grid-template-columns: 150px minmax(0, 1fr);
    gap: 36px;
  }
}

@media (max-width: 768px) {
  .tutorial-hero {
    padding-top: 64px;
    padding-bottom: 70px;
  }

  .tutorial-hero::before {
    top: 130px;
    width: 92vw;
    height: 520px;
  }

  .tutorial-orbit {
    display: none;
  }

  .tutorial-facts {
    margin-bottom: 36px;
  }

  .guide-step {
    grid-template-columns: 1fr;
    gap: 18px;
    padding-top: 72px;
    padding-bottom: 72px;
  }

  .guide-step-aside {
    display: flex;
    align-items: center;
    gap: 12px;
    padding-top: 0;
  }

  .guide-step-aside::after {
    display: none;
  }

  .guide-step-aside p {
    margin: 0;
  }

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

@media (max-width: 560px) {
  .journey-map {
    grid-template-columns: 1fr;
    padding: 14px;
  }

  .journey-node {
    min-height: 108px;
  }

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

  .tutorial-facts .fact-chip {
    width: 100%;
    justify-content: center;
  }

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

  .guide-inline-action .guide-text-link {
    margin-left: 0;
  }

  .platform-instruction {
    padding: 20px;
  }

  .next-reading article {
    min-height: 220px;
    padding: 22px;
  }
}