:root {
  --tutorial-content: 980px;
  --tutorial-icon-size: 64px;
  --tutorial-line-width: 1px;
  --tutorial-platform-min: 260px;
}

.tutorial-hero {
  position: relative;
  overflow-x: clip;
  border-bottom: var(--tutorial-line-width) solid var(--color-border);
  padding-top: clamp(72px, 9vw, 116px);
  padding-bottom: clamp(64px, 8vw, 104px);
  text-align: center;
}

.tutorial-hero::after {
  position: absolute;
  right: -12%;
  bottom: -58%;
  width: min(520px, 72vw);
  height: min(520px, 72vw);
  border-radius: var(--radius-pill);
  background: radial-gradient(circle, var(--color-accent-haze), var(--color-accent-haze-soft) 48%, var(--color-transparent) 72%);
  content: "";
  pointer-events: none;
}

.tutorial-hero .reading-wrap {
  position: relative;
  z-index: 1;
}

.tutorial-hero .badge {
  margin-bottom: 18px;
}

.tutorial-hero .eyebrow {
  margin-bottom: 16px;
}

.tutorial-hero h1 {
  margin-inline: auto;
  max-width: 820px;
}

.tutorial-lead {
  max-width: 690px;
  margin-right: auto;
  margin-bottom: 0;
  margin-left: auto;
  color: var(--color-text-muted);
  font-size: clamp(16px, 2vw, 19px);
}

.tutorial-hero-actions,
.tutorial-inline-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 14px;
}

.tutorial-hero-actions {
  justify-content: center;
  margin-top: 28px;
}

.tutorial-document {
  max-width: calc(var(--tutorial-content) + (var(--gutter) * 2));
  padding-top: 28px;
  padding-bottom: var(--section-space);
}

.tutorial-document > .toc-tabs {
  margin-bottom: clamp(56px, 8vw, 90px);
}

.tutorial-intro {
  padding-bottom: clamp(64px, 8vw, 96px);
}

.tutorial-intro .section-heading {
  margin-bottom: 30px;
}

.tutorial-preflight {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-top: 22px;
}

.tutorial-preflight > div {
  border: var(--tutorial-line-width) solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-panel);
  padding: clamp(20px, 3vw, 28px);
}

.tutorial-preflight h3 {
  font-size: 20px;
}

.tutorial-preflight p {
  color: var(--color-text-muted);
}

.tutorial-flow {
  position: relative;
}

.tutorial-flow::before {
  position: absolute;
  top: 32px;
  bottom: 32px;
  left: 31px;
  width: var(--tutorial-line-width);
  background: linear-gradient(var(--color-accent), var(--color-border) 18%, var(--color-border) 82%, var(--color-accent-dark));
  content: "";
}

.tutorial-step {
  position: relative;
  display: grid;
  grid-template-columns: var(--tutorial-icon-size) minmax(0, 1fr);
  gap: clamp(24px, 5vw, 46px);
  padding-top: clamp(56px, 7vw, 86px);
  padding-bottom: clamp(56px, 7vw, 86px);
}

.tutorial-step + .tutorial-step {
  border-top: var(--tutorial-line-width) solid var(--color-border);
}

.tutorial-step-mark {
  position: relative;
  z-index: 2;
  display: grid;
  width: var(--tutorial-icon-size);
  height: var(--tutorial-icon-size);
  place-items: center;
  border: var(--tutorial-line-width) solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-panel-raised);
  box-shadow: 0 0 22px var(--color-accent-haze-soft);
  color: var(--color-accent);
}

.tutorial-step-mark svg {
  width: 36px;
  height: 36px;
}

.tutorial-step-content {
  min-width: 0;
}

.tutorial-step-label {
  margin-bottom: 10px;
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.tutorial-step-content > h2 {
  margin-bottom: 26px;
}

.tutorial-step-content > p {
  color: var(--color-text-muted);
}

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

.tutorial-inline-actions {
  margin-top: 28px;
}

.tutorial-text-link {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  color: var(--color-accent);
  font-weight: 650;
  text-decoration: underline;
  text-underline-offset: 4px;
}

.platform-instructions {
  display: grid;
  grid-template-columns: repeat(2, minmax(var(--tutorial-platform-min), 1fr));
  gap: 16px;
  margin-top: 34px;
}

.platform-instruction {
  min-width: 0;
  border-top: var(--tutorial-line-width) solid var(--color-accent);
  border-right: var(--tutorial-line-width) solid var(--color-border);
  border-bottom: var(--tutorial-line-width) solid var(--color-border);
  border-left: var(--tutorial-line-width) solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-panel);
  padding: clamp(20px, 3vw, 28px);
}

.platform-instruction-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 18px;
}

.platform-instruction-head svg {
  width: 26px;
  height: 26px;
  color: var(--color-accent);
}

.platform-instruction-head h3 {
  margin-bottom: 0;
  font-size: 21px;
}

.platform-instruction p {
  color: var(--color-text-muted);
  font-size: 14.5px;
}

.platform-instruction p + p {
  margin-top: 16px;
}

.tutorial-platform-note {
  margin-top: 20px;
}

.tutorial-platform-note a {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.tutorial-next-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 30px;
}

.tutorial-next-card {
  display: flex;
  min-height: 168px;
  flex-direction: column;
  border: var(--tutorial-line-width) solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-panel);
  padding: 22px;
  transition: border-color var(--transition-fast), transform var(--transition-fast), background-color var(--transition-fast);
}

.tutorial-next-card:hover {
  border-color: var(--color-accent);
  background: var(--color-panel-raised);
  transform: translateY(-2px);
}

.tutorial-next-card .eyebrow {
  margin-bottom: 16px;
}

.tutorial-next-card strong {
  margin-bottom: 8px;
  font-size: 18px;
}

.tutorial-next-card > span:last-child {
  color: var(--color-text-muted);
  font-size: 14px;
}

.tutorial-finish {
  margin-top: 30px;
  border: var(--tutorial-line-width) solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-panel-raised);
  padding: clamp(24px, 4vw, 36px);
  box-shadow: var(--shadow-card);
}

.tutorial-finish h3 {
  margin-bottom: 18px;
}

.tutorial-finish ul {
  margin-bottom: 0;
  color: var(--color-text-muted);
}

.tutorial-finish li + li {
  margin-top: 9px;
}

@media (max-width: 768px) {
  .tutorial-hero {
    padding-top: 60px;
    padding-bottom: 68px;
  }

  .tutorial-preflight,
  .platform-instructions,
  .tutorial-next-grid {
    grid-template-columns: 1fr;
  }

  .tutorial-step {
    grid-template-columns: 52px minmax(0, 1fr);
    gap: 18px;
  }

  .tutorial-step-mark {
    width: 52px;
    height: 52px;
  }

  .tutorial-step-mark svg {
    width: 30px;
    height: 30px;
  }

  .tutorial-flow::before {
    left: 25px;
  }
}

@media (max-width: 640px) {
  .tutorial-hero-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .tutorial-hero-actions .btn-primary,
  .tutorial-hero-actions .btn-secondary {
    width: 100%;
  }

  .tutorial-step {
    grid-template-columns: 1fr;
  }

  .tutorial-step-mark {
    width: 48px;
    height: 48px;
  }

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

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

  .tutorial-inline-actions .btn-primary,
  .tutorial-inline-actions .btn-secondary {
    width: 100%;
  }

  .tutorial-text-link {
    justify-content: center;
  }
}