.tutorial-hero {
  position: relative;
  overflow-x: clip;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-bg);
}

.tutorial-hero::before {
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(90deg, var(--color-stripe) 0, var(--color-stripe) 1px, transparent 1px, transparent 18px);
  -webkit-mask-image: linear-gradient(90deg, transparent 38%, var(--color-overlay) 76%, transparent);
  mask-image: linear-gradient(90deg, transparent 38%, var(--color-overlay) 76%, transparent);
  content: "";
  pointer-events: none;
}

.tutorial-hero .wrap {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(350px, 0.78fr);
  min-height: 610px;
  align-items: center;
  gap: 72px;
  padding-top: 82px;
  padding-bottom: 82px;
}

.tutorial-hero-copy {
  max-width: 670px;
}

.tutorial-hero-copy .lead {
  max-width: 640px;
  margin-bottom: 30px;
}

.tutorial-flow {
  position: relative;
  min-width: 0;
  padding: 24px;
  transform: perspective(1200px) rotateY(-4deg);
}

.tutorial-flow-layer {
  position: relative;
  display: flex;
  min-width: 0;
  align-items: center;
  gap: 16px;
  margin-right: 36px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-card-glass-dim);
  padding: 18px 20px;
  box-shadow: var(--shadow-1);
}

.tutorial-flow-layer + .tutorial-flow-layer {
  margin-top: 14px;
  margin-right: 24px;
  margin-left: 12px;
}

.tutorial-flow-layer + .tutorial-flow-layer + .tutorial-flow-layer {
  margin-right: 12px;
  margin-left: 24px;
  background: var(--color-card-glass);
  box-shadow: var(--shadow-2);
}

.tutorial-flow-layer + .tutorial-flow-layer + .tutorial-flow-layer + .tutorial-flow-layer {
  margin-right: 0;
  margin-left: 36px;
}

.tutorial-flow-current {
  border-color: var(--color-accent);
  background: var(--color-bg);
  box-shadow: var(--shadow-3);
}

.tutorial-flow-index {
  color: var(--color-accent-dark);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.tutorial-flow-layer div {
  min-width: 0;
}

.tutorial-flow-layer strong {
  display: block;
  color: var(--color-text);
  font-family: var(--font-display);
  font-size: 16px;
}

.tutorial-flow-layer small {
  display: block;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 11px;
}

.tutorial-flow-current .badge {
  margin-left: auto;
  flex-shrink: 0;
}

.guide-overview {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(280px, 0.65fr);
  gap: 54px;
  align-items: start;
  margin-top: 56px;
}

.guide-overview a,
.guide-step-content a {
  color: var(--color-accent-dark);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.guide-overview p {
  color: var(--color-text-muted);
}

.guide-preflight {
  display: grid;
  gap: 12px;
}

.guide-preflight > div {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-bg);
  padding: 20px;
  box-shadow: var(--shadow-1);
}

.guide-preflight strong {
  display: block;
  margin-top: 5px;
  color: var(--color-text);
}

.guide-preflight p {
  margin-top: 5px;
  margin-bottom: 0;
  font-size: 13px;
  line-height: 1.7;
}

.guide-body {
  max-width: 1020px;
}

.guide-step {
  position: relative;
  min-width: 0;
  padding-left: 96px;
  scroll-margin-top: calc(var(--nav-height) + 24px);
}

.guide-step + .guide-step {
  margin-top: 96px;
}

.guide-step:not(:last-child)::before {
  position: absolute;
  top: 58px;
  bottom: -96px;
  left: 27px;
  border-left: 1px dashed var(--color-border);
  content: "";
}

.guide-step-marker {
  position: absolute;
  top: 0;
  left: 0;
  display: grid;
  width: 56px;
  height: 56px;
  place-items: center;
  border-radius: var(--radius-md);
  background: var(--gradient-brand);
  color: var(--color-bg);
  box-shadow: var(--shadow-button);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
}

.guide-step-content {
  min-width: 0;
  border-top: 1px solid var(--color-border);
  padding-top: 4px;
}

.guide-step-content > .mono-label {
  margin-top: 22px;
  margin-bottom: 10px;
}

.guide-step-content > p {
  color: var(--color-text-muted);
  line-height: 1.95;
}

.guide-step-content h3 {
  margin-top: 32px;
}

.guide-path {
  display: flex;
  min-width: 0;
  align-items: center;
  gap: 16px;
  margin-top: 28px;
  margin-bottom: 28px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-panel);
  padding: 18px 20px;
}

.guide-path span {
  flex-shrink: 0;
  color: var(--color-accent-dark);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.06em;
}

.guide-path code {
  min-width: 0;
  border: 0;
  background: transparent;
  padding: 0;
  color: var(--color-text);
  font-size: 12px;
  overflow-wrap: anywhere;
}

.guide-mode-table {
  min-width: 640px;
}

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

.guide-signal {
  min-width: 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-panel);
  padding: 24px;
}

.guide-signal h3 {
  margin-top: 7px;
  margin-bottom: 8px;
  font-size: 19px;
}

.guide-signal p {
  margin-bottom: 0;
  color: var(--color-text-muted);
  font-size: 14px;
}

.guide-verify-stack {
  display: grid;
  gap: 10px;
  margin-top: 30px;
  margin-bottom: 30px;
}

.guide-verify-stack > div {
  display: flex;
  min-width: 0;
  align-items: center;
  gap: 18px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-panel);
  padding: 18px 20px;
}

.guide-verify-number {
  display: grid;
  width: 38px;
  height: 38px;
  flex-shrink: 0;
  place-items: center;
  border-radius: var(--radius-pill);
  background: var(--gradient-brand);
  color: var(--color-bg);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
}

.guide-verify-stack strong {
  display: block;
  color: var(--color-text);
}

.guide-verify-stack p {
  margin-bottom: 0;
  color: var(--color-text-muted);
  font-size: 13px;
}

.guide-review {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  background: var(--color-bg);
  box-shadow: var(--shadow-2);
  overflow: hidden;
}

.guide-review article {
  min-width: 0;
  padding: 30px;
}

.guide-review article:nth-child(odd) {
  border-right: 1px solid var(--color-border);
}

.guide-review article:nth-child(n + 3) {
  border-top: 1px solid var(--color-border);
}

.guide-review h3 {
  margin-top: 8px;
  font-size: 20px;
}

.guide-review p {
  margin-bottom: 0;
  color: var(--color-text-muted);
  font-size: 14px;
  line-height: 1.85;
}

.guide-next {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 36px;
  align-items: center;
  margin-top: 48px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  background: var(--color-panel-strong);
  padding: 36px;
}

.guide-next h2 {
  margin-bottom: 10px;
  font-size: clamp(25px, 2.5vw, 34px);
}

.guide-next p {
  max-width: 680px;
  margin-bottom: 0;
  color: var(--color-text-muted);
}

.guide-next .button-row {
  justify-content: flex-end;
}

@media (max-width: 960px) {
  .tutorial-hero .wrap {
    grid-template-columns: minmax(0, 1fr);
    min-height: 0;
    gap: 42px;
  }

  .tutorial-flow {
    width: min(620px, 100%);
    transform: none;
  }

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

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

  .guide-next .button-row {
    justify-content: flex-start;
  }
}

@media (max-width: 640px) {
  .tutorial-hero .wrap {
    gap: 30px;
    padding-top: 52px;
    padding-bottom: 58px;
  }

  .tutorial-flow {
    padding: 0;
  }

  .tutorial-flow-layer,
  .tutorial-flow-layer + .tutorial-flow-layer,
  .tutorial-flow-layer + .tutorial-flow-layer + .tutorial-flow-layer,
  .tutorial-flow-layer + .tutorial-flow-layer + .tutorial-flow-layer + .tutorial-flow-layer {
    margin-right: 0;
    margin-left: 0;
  }

  .tutorial-flow-current {
    flex-wrap: wrap;
  }

  .tutorial-flow-current .badge {
    margin-left: 28px;
  }

  .guide-overview {
    gap: 30px;
    margin-top: 38px;
  }

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

  .guide-step + .guide-step {
    margin-top: 72px;
  }

  .guide-step:not(:last-child)::before {
    display: none;
  }

  .guide-step-marker {
    position: static;
    width: 48px;
    height: 48px;
    margin-bottom: 18px;
  }

  .guide-step-content {
    padding-top: 0;
  }

  .guide-step-content > .mono-label {
    margin-top: 18px;
  }

  .guide-path {
    align-items: flex-start;
    flex-direction: column;
    gap: 7px;
    padding: 17px;
  }

  .guide-signal-grid,
  .guide-review {
    grid-template-columns: minmax(0, 1fr);
  }

  .guide-review article:nth-child(odd) {
    border-right: 0;
  }

  .guide-review article + article {
    border-top: 1px solid var(--color-border);
  }

  .guide-review article {
    padding: 24px 20px;
  }

  .guide-next {
    padding: 26px 20px;
  }

  .guide-next .button-row {
    align-items: stretch;
  }
}

@media (max-width: 400px) {
  .tutorial-flow-layer {
    padding: 15px;
  }

  .tutorial-flow-current .badge {
    margin-left: 28px;
  }

  .guide-verify-stack > div {
    align-items: flex-start;
    padding: 16px;
  }
}