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

.tutorial-hero::before {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(var(--color-paper-noise) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-paper-noise) 1px, transparent 1px);
  background-size: 38px 38px;
  content: "";
  mask-image: linear-gradient(to bottom, var(--color-ink), transparent);
  opacity: 0.7;
}

.tutorial-hero-inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(420px, 0.82fr);
  gap: 68px;
  align-items: center;
  padding-top: 72px;
  padding-bottom: 76px;
}

.tutorial-hero-copy h1 {
  max-width: 690px;
  margin-top: 22px;
  margin-bottom: 22px;
}

.tutorial-hero-copy h1 span {
  display: inline-block;
}

.tutorial-hero-copy h1 span + span {
  margin-left: 0.22em;
}

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

.tutorial-facts {
  margin-top: 22px;
}

.tutorial-route {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  box-shadow: var(--shadow-card);
}

.tutorial-route-chrome {
  display: flex;
  min-height: 44px;
  align-items: center;
  gap: 7px;
  padding-inline: 16px;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface-soft);
}

.tutorial-route-chrome span {
  width: 9px;
  height: 9px;
  flex: none;
  border-radius: var(--radius-pill);
  background: var(--color-ink-muted);
}

.tutorial-route-chrome span:nth-child(2) {
  opacity: 0.55;
}

.tutorial-route-chrome span:nth-child(3) {
  opacity: 0.3;
}

.tutorial-route-chrome b {
  margin-left: auto;
  color: var(--color-ink-muted);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.09em;
}

.tutorial-route-body {
  position: relative;
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 6px;
  min-height: 220px;
  align-items: center;
  padding: 36px 24px;
  background-image:
    linear-gradient(var(--color-paper-noise) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-paper-noise) 1px, transparent 1px);
  background-size: 25px 25px;
}

.tutorial-route-line {
  position: absolute;
  top: 50%;
  right: 10%;
  left: 10%;
  height: 3px;
  border-radius: var(--radius-pill);
  background: var(--color-route-muted);
  transform: translateY(-50%);
}

.tutorial-route-line::after {
  position: absolute;
  top: 0;
  left: 0;
  width: 24%;
  height: 100%;
  border-radius: inherit;
  background: var(--color-accent);
  content: "";
}

.tutorial-route-stop {
  position: relative;
  z-index: 1;
  display: grid;
  justify-items: center;
  gap: 12px;
  color: var(--color-ink-muted);
  font-size: 12px;
  font-weight: 700;
}

.tutorial-route-stop i {
  width: 19px;
  height: 19px;
  border: 4px solid var(--color-route-muted);
  border-radius: var(--radius-pill);
  background: var(--color-surface);
}

.tutorial-route-stop.is-current {
  color: var(--color-accent-deep);
}

.tutorial-route-stop.is-current i {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 6px var(--color-focus-halo);
}

.tutorial-route-note {
  display: flex;
  min-height: 58px;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding-inline: 18px;
  border-top: 1px solid var(--color-border);
  color: var(--color-ink-muted);
  font-size: 12px;
}

.tutorial-route-note strong {
  color: var(--color-accent-deep);
}

.tutorial-grid-decor {
  position: absolute;
  right: -120px;
  bottom: -180px;
  width: 420px;
  height: 420px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  opacity: 0.42;
}

.tutorial-grid-decor::before,
.tutorial-grid-decor::after {
  position: absolute;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  content: "";
}

.tutorial-grid-decor::before {
  inset: 72px;
}

.tutorial-grid-decor::after {
  inset: 142px;
  border-color: var(--color-accent);
}

.tutorial-document {
  position: relative;
}

.tutorial-document > .toc-tabs {
  top: 10px;
  margin-bottom: 54px;
}

.tutorial-section {
  display: grid;
  grid-template-columns: minmax(190px, 0.34fr) minmax(0, 1fr);
  gap: 54px;
  padding-top: 54px;
  padding-bottom: 54px;
  border-bottom: 1px solid var(--color-border);
}

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

.tutorial-step-head {
  align-self: start;
}

.tutorial-step-head h2 {
  margin-bottom: 0;
  font-size: clamp(28px, 3.2vw, 40px);
}

.tutorial-copy {
  max-width: 820px;
  color: var(--color-ink);
}

.tutorial-copy > p {
  margin-bottom: 20px;
  color: var(--color-ink-muted);
  font-size: 17px;
  line-height: 1.9;
}

.tutorial-copy > p strong {
  color: var(--color-ink);
}

.tutorial-copy pre {
  margin-bottom: 22px;
}

.tutorial-copy a:not(.button):not(.card) {
  color: var(--color-accent-deep);
  font-weight: 700;
  text-decoration: underline;
  text-decoration-color: var(--color-route-muted);
  text-underline-offset: 3px;
}

.tutorial-inline-action {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  margin-top: 28px;
  padding: 18px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
}

.tutorial-inline-action span {
  color: var(--color-ink-muted);
  font-size: 14px;
}

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

.platform-instruction {
  min-width: 0;
  padding: 25px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
}

.platform-instruction h3 {
  margin-bottom: 14px;
  font-size: 21px;
}

.platform-instruction p {
  color: var(--color-ink-muted);
  line-height: 1.8;
}

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

.platform-instruction-label {
  margin-bottom: 10px;
  color: var(--color-accent-deep);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.tutorial-client-callout {
  margin-top: 30px;
}

.verification-panel {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: 32px;
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
}

.verification-panel div {
  min-width: 0;
  padding: 22px;
  border-right: 1px solid var(--color-border);
}

.verification-panel div:last-child {
  border-right: 0;
}

.verification-panel strong,
.verification-panel span {
  display: block;
}

.verification-panel strong {
  margin-bottom: 7px;
  color: var(--color-accent-deep);
}

.verification-panel span {
  color: var(--color-ink-muted);
  font-size: 13px;
  line-height: 1.65;
}

.tutorial-next-links {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 34px;
}

.tutorial-next-card {
  display: flex;
  min-height: 230px;
  flex-direction: column;
  transition:
    border-color var(--transition-fast),
    transform var(--transition-fast);
}

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

.tutorial-next-card h3 {
  font-size: 21px;
}

.tutorial-next-card p {
  color: var(--color-ink-muted);
  font-size: 14px;
}

.tutorial-next-card .text-link {
  margin-top: auto;
}

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

  .tutorial-route {
    max-width: 760px;
  }

  .tutorial-section {
    grid-template-columns: 1fr;
    gap: 22px;
  }

  .tutorial-step-head {
    max-width: 720px;
  }

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

  .tutorial-next-card {
    min-height: 0;
  }
}

@media (max-width: 768px) {
  .tutorial-hero-inner {
    gap: 38px;
    padding-top: 42px;
    padding-bottom: 52px;
  }

  .tutorial-hero-copy h1 span + span {
    margin-left: 0;
  }

  .tutorial-grid-decor {
    display: none;
  }

  .tutorial-document > .toc-tabs {
    margin-bottom: 30px;
  }

  .tutorial-section {
    padding-top: 42px;
    padding-bottom: 42px;
  }

  .tutorial-copy > p {
    font-size: 16px;
  }

  .platform-instruction-grid {
    grid-template-columns: 1fr;
  }

  .verification-panel {
    grid-template-columns: 1fr;
  }

  .verification-panel div {
    border-right: 0;
    border-bottom: 1px solid var(--color-border);
  }

  .verification-panel div:last-child {
    border-bottom: 0;
  }
}

@media (max-width: 520px) {
  .tutorial-route-body {
    min-height: 178px;
    padding-inline: 12px;
  }

  .tutorial-route-stop {
    gap: 9px;
    font-size: 10px;
  }

  .tutorial-route-stop i {
    width: 16px;
    height: 16px;
    border-width: 3px;
  }

  .tutorial-route-note {
    align-items: flex-start;
    flex-direction: column;
    justify-content: center;
    gap: 2px;
    padding-top: 10px;
    padding-bottom: 10px;
  }

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

  .tutorial-inline-action .button {
    width: 100%;
  }

  .platform-instruction {
    padding: 20px;
  }
}