.tutorial-hero {
  position: relative;
  overflow-x: clip;
  border-bottom: 1px solid var(--color-border);
  background:
    linear-gradient(to right, var(--color-accent-faint) 1px, transparent 1px),
    linear-gradient(to bottom, var(--color-accent-faint) 1px, transparent 1px),
    radial-gradient(circle at 78% 42%, var(--color-accent-soft), transparent 24rem);
  background-size: 48px 48px, 48px 48px, auto;
}

.tutorial-hero-inner {
  min-height: 540px;
  padding-top: clamp(72px, 9vw, 118px);
  padding-bottom: clamp(64px, 8vw, 104px);
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(420px, .9fr);
  align-items: center;
  gap: clamp(42px, 7vw, 94px);
}

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

.tutorial-hero-copy h1 {
  margin-top: 18px;
  margin-bottom: 20px;
}

.tutorial-hero-copy .lead {
  margin-bottom: 0;
}

.tutorial-hero-copy .hero-actions {
  justify-content: flex-start;
  margin-top: 28px;
}

.tutorial-route {
  position: relative;
  min-width: 0;
  padding: 32px;
  display: grid;
  gap: 18px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  background: var(--color-white-soft);
  box-shadow: var(--shadow-card);
}

.tutorial-route::before {
  position: absolute;
  inset: 14px;
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-lg);
  content: "";
  pointer-events: none;
}

.tutorial-route-line {
  position: absolute;
  top: 56px;
  bottom: 56px;
  left: 51px;
  width: 2px;
  background: linear-gradient(var(--color-accent), var(--color-border));
}

.tutorial-route-stop {
  position: relative;
  z-index: 1;
  min-width: 0;
  min-height: 62px;
  padding: 10px 16px 10px 52px;
  display: flex;
  align-items: center;
  gap: 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-panel);
}

.tutorial-route-stop.is-active {
  border-color: var(--color-accent);
  background: var(--color-panel-strong);
  box-shadow: var(--shadow-soft);
}

.tutorial-stop-dot {
  position: absolute;
  left: 12px;
  width: 15px;
  height: 15px;
  flex: 0 0 auto;
  border: 4px solid var(--color-white);
  border-radius: var(--radius-pill);
  background: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-soft);
}

.tutorial-route-stop strong {
  font-size: 14px;
}

.tutorial-route-stop small {
  margin-left: auto;
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: 10px;
}

.guide-shell {
  padding-top: clamp(50px, 7vw, 86px);
  padding-bottom: clamp(72px, 9vw, 116px);
}

.guide-shell > .callout {
  max-width: var(--reading-width);
  margin: 0 auto 34px;
}

.guide-shell > .callout p {
  margin-bottom: 0;
}

.guide-shell > .callout a,
.guide-step a:not(.button),
.guide-finish a:not(.button) {
  color: var(--color-accent-dark);
  text-decoration: underline;
  text-decoration-color: var(--color-accent-soft);
  text-underline-offset: 3px;
}

.guide-shell > .toc-tabs {
  margin-inline: auto;
}

.guide-layout {
  position: relative;
  max-width: 1050px;
  margin: 62px auto 0;
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  gap: 30px;
}

.guide-rail {
  position: relative;
  min-height: 100%;
  display: flex;
  align-items: center;
  flex-direction: column;
}

.guide-rail-track {
  width: 1px;
  min-height: 100%;
  flex: 1;
  margin-block: 15px;
  background: linear-gradient(var(--color-accent), var(--color-border), var(--color-accent));
}

.guide-rail-label {
  color: var(--color-accent-dark);
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 800;
  letter-spacing: .1em;
  writing-mode: vertical-rl;
}

.guide-content {
  min-width: 0;
}

.guide-step {
  position: relative;
  min-width: 0;
  padding-bottom: clamp(68px, 9vw, 112px);
}

.guide-step-marker {
  position: absolute;
  top: 0;
  left: -78px;
  z-index: 2;
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-pill);
  background: var(--color-bg);
  color: var(--color-accent-dark);
  box-shadow: 0 0 0 8px var(--color-accent-faint);
}

.guide-step-marker svg {
  width: 21px;
  height: 21px;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.guide-step-body {
  min-width: 0;
  padding: clamp(26px, 5vw, 50px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(145deg, var(--color-white-soft), var(--color-panel));
  box-shadow: var(--shadow-soft);
}

.guide-step-body h2 {
  margin: 8px 0 22px;
  font-size: clamp(29px, 3.7vw, 44px);
}

.guide-step-body h3 {
  margin-bottom: 12px;
  font-size: 20px;
}

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

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

.guide-step-body strong {
  color: var(--color-text);
}

.guide-step-kicker {
  display: inline-flex;
  align-items: center;
  color: var(--color-accent-dark);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: .08em;
}

.guide-step-kicker::before {
  width: 24px;
  height: 2px;
  margin-right: 9px;
  border-radius: var(--radius-pill);
  background: var(--color-accent);
  content: "";
}

.step-action {
  margin-top: 28px;
  padding-top: 22px;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 14px 20px;
  border-top: 1px solid var(--color-border);
}

.step-action > span {
  color: var(--color-muted);
  font-size: 12px;
}

.text-link {
  font-size: 13px;
  font-weight: 720;
}

.guide-step pre {
  margin: 24px 0;
}

.platform-guides {
  margin: 30px 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.platform-guide {
  min-width: 0;
  padding: 24px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-white);
}

.platform-guide-head {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.platform-guide-head svg {
  width: 26px;
  height: 26px;
  flex: 0 0 auto;
  color: var(--color-accent-dark);
  fill: currentColor;
  stroke: currentColor;
}

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

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

.guide-step-body > .callout {
  margin-bottom: 0;
}

.verify-panel {
  margin-top: 30px;
  display: grid;
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-border);
}

.verify-panel > div {
  min-width: 0;
  padding: 18px 20px;
  display: grid;
  grid-template-columns: minmax(120px, .35fr) minmax(0, 1fr);
  align-items: center;
  gap: 18px;
  background: var(--color-white);
}

.verify-panel strong {
  font-size: 13px;
}

.verify-panel span {
  color: var(--color-muted);
  font-size: 13px;
}

.guide-finish {
  position: relative;
  overflow-x: clip;
  padding: clamp(30px, 6vw, 56px);
  border-radius: var(--radius-lg);
  background: var(--color-text);
  color: var(--color-white);
}

.guide-finish::after {
  position: absolute;
  right: -88px;
  bottom: -110px;
  width: 250px;
  height: 250px;
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-pill);
  box-shadow:
    0 0 0 26px var(--color-accent-faint),
    0 0 0 52px var(--color-accent-faint);
  content: "";
  pointer-events: none;
}

.guide-finish .kicker,
.guide-finish h2,
.guide-finish p,
.guide-finish-actions {
  position: relative;
  z-index: 1;
}

.guide-finish h2 {
  margin: 18px 0 14px;
  color: var(--color-white);
}

.guide-finish p {
  max-width: 720px;
  color: var(--color-border);
}

.guide-finish-actions {
  margin-top: 26px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

@media (max-width: 980px) {
  .tutorial-hero-inner {
    grid-template-columns: minmax(0, 1fr);
  }

  .tutorial-hero-copy {
    max-width: 780px;
  }

  .tutorial-route {
    grid-template-columns: repeat(5, minmax(0, 1fr));
    padding: 25px;
  }

  .tutorial-route-line {
    top: 55px;
    right: 52px;
    bottom: auto;
    left: 52px;
    width: auto;
    height: 2px;
  }

  .tutorial-route-stop {
    min-height: 108px;
    padding: 42px 10px 12px;
    align-items: center;
    flex-direction: column;
    justify-content: center;
    gap: 4px;
    text-align: center;
  }

  .tutorial-stop-dot {
    top: 16px;
    left: 50%;
    transform: translateX(-50%);
  }

  .tutorial-route-stop small {
    margin-left: 0;
  }

  .platform-guides {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (max-width: 768px) {
  .tutorial-hero-inner {
    min-height: auto;
    padding-top: 58px;
    padding-bottom: 58px;
    gap: 38px;
  }

  .tutorial-route {
    grid-template-columns: minmax(0, 1fr);
    gap: 10px;
    padding: 20px;
  }

  .tutorial-route-line {
    top: 42px;
    right: auto;
    bottom: 42px;
    left: 40px;
    width: 2px;
    height: auto;
  }

  .tutorial-route-stop {
    min-height: 56px;
    padding: 9px 12px 9px 48px;
    align-items: center;
    flex-direction: row;
    justify-content: flex-start;
    text-align: left;
  }

  .tutorial-stop-dot {
    top: auto;
    left: 11px;
    transform: none;
  }

  .tutorial-route-stop small {
    margin-left: auto;
  }

  .guide-layout {
    grid-template-columns: minmax(0, 1fr);
    margin-top: 42px;
  }

  .guide-rail {
    display: none;
  }

  .guide-step-marker {
    position: relative;
    top: auto;
    left: auto;
    margin: 0 0 -21px 24px;
  }

  .guide-step-body {
    padding-top: 42px;
  }

  .verify-panel > div {
    grid-template-columns: minmax(0, 1fr);
    gap: 5px;
  }
}

@media (max-width: 640px) {
  .tutorial-hero-copy .hero-actions {
    width: 100%;
  }

  .tutorial-hero-copy .hero-actions .button {
    flex: 1 1 auto;
  }

  .tutorial-route {
    padding: 16px;
  }

  .tutorial-route::before {
    display: none;
  }

  .tutorial-route-line {
    left: 36px;
  }

  .guide-shell {
    padding-top: 44px;
    padding-bottom: 72px;
  }

  .guide-step {
    padding-bottom: 58px;
  }

  .guide-step-body {
    padding-right: 20px;
    padding-left: 20px;
  }

  .platform-guide {
    padding: 20px;
  }

  .platform-guide-head {
    align-items: center;
  }

  .platform-guide-head h3 {
    font-size: 18px;
  }

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

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

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

  .guide-finish-actions .button {
    width: 100%;
  }
}