.tutorial-hero {
  position: relative;
  padding-top: 72px;
  padding-bottom: 68px;
  overflow-x: clip;
}

.tutorial-hero::before {
  position: absolute;
  top: -240px;
  right: -180px;
  width: 680px;
  height: 680px;
  content: "";
  border-radius: 50%;
  background: radial-gradient(circle, var(--color-accent-glow), transparent 70%);
  pointer-events: none;
}

.tutorial-hero::after {
  position: absolute;
  bottom: -260px;
  left: -210px;
  width: 560px;
  height: 560px;
  content: "";
  border-radius: 50%;
  background: radial-gradient(circle, var(--color-teal-glow), transparent 70%);
  pointer-events: none;
}

.tutorial-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.16fr) minmax(330px, .84fr);
  align-items: center;
  gap: 70px;
}

.tutorial-hero__copy {
  max-width: 720px;
}

.tutorial-eyebrow {
  display: inline-flex;
  min-height: 32px;
  align-items: center;
  gap: 9px;
  margin-bottom: 18px;
  padding: 5px 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  background: var(--color-panel);
  color: var(--color-text-muted);
  font-size: 13px;
  font-weight: 760;
}

.tutorial-hero h1 {
  max-width: 680px;
}

.tutorial-hero__lede {
  max-width: 680px;
  margin: 22px 0 0;
  color: var(--color-text-muted);
  font-size: 19px;
  line-height: 1.8;
}

.tutorial-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 28px;
}

.tutorial-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.tutorial-route {
  position: relative;
  display: grid;
  gap: 14px;
  padding: 30px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  background: var(--color-panel);
  box-shadow: var(--shadow-mid);
}

.tutorial-route__rail {
  position: absolute;
  top: 54px;
  bottom: 54px;
  left: 53px;
  width: 3px;
  border-radius: var(--radius-pill);
  background: linear-gradient(
    var(--color-direct),
    var(--color-dedicated),
    var(--color-relay)
  );
}

.tutorial-route__item {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  align-items: center;
  gap: 16px;
  min-height: 82px;
  padding: 13px 16px 13px 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-white);
  box-shadow: var(--shadow-low);
}

.tutorial-route__node {
  display: grid;
  width: 44px;
  height: 44px;
  place-items: center;
  margin-left: 0;
  border: 4px solid var(--color-panel);
  border-radius: 50%;
  background: var(--color-accent);
  color: var(--color-white);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 800;
}

.tutorial-route__item:nth-of-type(3) .tutorial-route__node {
  background: var(--color-direct);
}

.tutorial-route__item:nth-of-type(4) .tutorial-route__node {
  background: var(--color-warning);
}

.tutorial-route__item:nth-of-type(5) .tutorial-route__node {
  background: var(--color-accent-dark);
}

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

.tutorial-route__item p {
  margin: 3px 0 0;
  color: var(--color-text-muted);
  font-size: 13px;
  line-height: 1.55;
}

.tutorial-layout {
  position: relative;
}

.tutorial-layout .toc-tabs {
  top: 12px;
  margin-top: 0;
}

.tutorial-article {
  width: 100%;
  max-width: 960px;
  margin-inline: auto;
}

.tutorial-step {
  display: grid;
  grid-template-columns: 112px minmax(0, 1fr);
  gap: 34px;
  padding-top: 74px;
  padding-bottom: 74px;
  border-bottom: 1px solid var(--color-border);
}

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

.tutorial-step__number {
  position: sticky;
  top: var(--toc-offset);
  align-self: start;
  padding-top: 7px;
  color: var(--color-accent-dark);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: .06em;
}

.tutorial-step__number::after {
  display: block;
  width: 46px;
  height: 3px;
  margin-top: 12px;
  content: "";
  border-radius: var(--radius-pill);
  background: linear-gradient(90deg, var(--color-accent), var(--color-teal));
}

.tutorial-step__content {
  min-width: 0;
}

.tutorial-step__content h2 {
  margin-bottom: 24px;
  font-size: clamp(30px, 4vw, 44px);
}

.tutorial-step__content > p {
  color: var(--color-text-muted);
  font-size: 17px;
  line-height: 1.9;
}

.tutorial-step__content a:not(.btn-primary):not(.btn-secondary) {
  color: var(--color-accent-dark);
  font-weight: 760;
  text-decoration: underline;
  text-decoration-thickness: .08em;
  text-underline-offset: .2em;
}

.tutorial-step__content > .btn-primary,
.tutorial-step__content > .btn-secondary {
  margin-top: 8px;
}

.platform-instructions {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-top: 30px;
}

.platform-instruction {
  min-width: 0;
  padding: 25px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-panel);
  box-shadow: var(--shadow-low);
}

.platform-instruction:nth-child(2),
.platform-instruction:nth-child(3) {
  background: var(--color-panel-strong);
}

.platform-instruction__head {
  display: flex;
  align-items: center;
  gap: 13px;
  margin-bottom: 17px;
}

.platform-instruction__mark {
  display: grid;
  min-width: 48px;
  min-height: 36px;
  place-items: center;
  padding: 5px 9px;
  border-radius: var(--radius-sm);
  background: var(--color-accent-soft);
  color: var(--color-accent-dark);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 800;
}

.platform-instruction:nth-child(2) .platform-instruction__mark {
  background: var(--color-panel);
  color: var(--color-direct);
}

.platform-instruction:nth-child(3) .platform-instruction__mark {
  background: var(--color-panel);
  color: var(--color-warning);
}

.platform-instruction:nth-child(4) .platform-instruction__mark {
  color: var(--color-accent-dark);
}

.platform-instruction h3 {
  font-size: 23px;
}

.platform-instruction p {
  color: var(--color-text-muted);
  line-height: 1.82;
}

.tutorial-complete {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 28px;
  margin-top: 34px;
  padding: 28px;
}

.tutorial-complete__label {
  margin-bottom: 5px;
  color: var(--color-accent-dark);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .08em;
}

.tutorial-complete h3 {
  font-size: 24px;
}

.tutorial-complete p:last-child {
  margin-top: 8px;
  color: var(--color-text-muted);
}

@media (max-width: 980px) {
  .tutorial-hero__grid {
    grid-template-columns: 1fr;
    gap: 42px;
  }

  .tutorial-route {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .tutorial-route__rail {
    display: none;
  }
}

@media (max-width: 768px) {
  .tutorial-hero {
    padding-top: 50px;
    padding-bottom: 48px;
  }

  .tutorial-hero::before,
  .tutorial-hero::after {
    display: none;
  }

  .tutorial-hero__lede {
    font-size: 17px;
  }

  .tutorial-step {
    grid-template-columns: 1fr;
    gap: 17px;
    padding-top: 58px;
    padding-bottom: 58px;
  }

  .tutorial-step__number {
    position: static;
    padding-top: 0;
  }

  .tutorial-step__number::after {
    width: 34px;
    margin-top: 8px;
  }

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

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

  .tutorial-complete .btn-primary {
    width: fit-content;
  }
}

@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-route {
    grid-template-columns: 1fr;
    padding: 18px;
  }

  .tutorial-route__item {
    padding-right: 12px;
  }

  .tutorial-step__content > p {
    font-size: 15px;
    line-height: 1.85;
  }

  .platform-instruction {
    padding: 21px;
  }

  .tutorial-complete {
    padding: 22px;
  }

  .tutorial-complete .btn-primary {
    width: 100%;
  }
}