.tutorial-main {
  overflow-x: clip;
}

.tutorial-intro {
  position: relative;
  padding-top: 88px;
  padding-bottom: 78px;
  overflow-x: clip;
  border-bottom: 1px solid var(--color-border);
}

.tutorial-intro::after {
  position: absolute;
  right: -96px;
  bottom: -164px;
  width: 360px;
  height: 360px;
  border: 1px dashed var(--color-border-strong);
  border-radius: var(--radius-pill);
  content: "";
  pointer-events: none;
}

.tutorial-intro-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(380px, 0.72fr);
  gap: 72px;
  align-items: center;
}

.tutorial-intro-copy h1 {
  max-width: 740px;
  margin-top: 24px;
}

.tutorial-intro-copy .lead {
  max-width: 720px;
  margin-top: 25px;
}

.tutorial-intro-actions,
.chapter-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 11px;
}

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

.tutorial-facts {
  margin-top: 24px;
}

.tutorial-route {
  position: relative;
  padding: 28px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  background: var(--color-panel-soft);
}

.tutorial-route::before {
  position: absolute;
  top: 38px;
  bottom: 38px;
  left: 51px;
  border-left: 1px dashed var(--color-accent);
  content: "";
}

.tutorial-route-head {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 22px;
  color: var(--color-text-muted);
  font-size: 11px;
  font-weight: 700;
}

.tutorial-route-list {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.tutorial-route-list li {
  display: grid;
  min-height: 62px;
  grid-template-columns: 48px minmax(0, 1fr);
  gap: 14px;
  align-items: center;
  padding: 10px 14px 10px 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-panel);
}

.tutorial-route-list span {
  display: grid;
  width: 46px;
  height: 34px;
  place-items: center;
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-pill);
  background: var(--color-accent-soft);
  color: var(--color-accent-dark);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 760;
}

.tutorial-route-list strong {
  font-size: 14px;
  line-height: 1.45;
}

.guide-toc {
  width: min(calc(100% - (var(--gutter) * 2)), var(--reading-width));
  margin: 22px auto 0;
}

.tutorial-document {
  padding-top: 44px;
  padding-bottom: var(--section-space);
}

.tutorial-callout {
  max-width: 980px;
  margin: 0 auto 62px;
}

.tutorial-chapter {
  display: grid;
  max-width: 1120px;
  margin-inline: auto;
  grid-template-columns: 112px minmax(0, 1fr);
  gap: 34px;
  padding-top: 68px;
  padding-bottom: 68px;
  border-top: 1px solid var(--color-border);
}

.tutorial-chapter:first-of-type {
  border-top: 0;
}

.tutorial-chapter-shift .chapter-content {
  max-width: 900px;
  margin-left: 42px;
}

.tutorial-chapter-wide {
  max-width: 1240px;
}

.chapter-index {
  position: sticky;
  top: calc(var(--toc-top) + var(--toc-height) + 20px);
  display: flex;
  height: fit-content;
  flex-direction: column;
  align-items: flex-start;
  gap: 2px;
  padding-top: 8px;
  color: var(--color-text-muted);
  font-family: var(--font-mono);
}

.chapter-index span {
  font-size: 10px;
  font-weight: 720;
  letter-spacing: 0.08em;
}

.chapter-index strong {
  color: var(--color-accent);
  font-size: 38px;
  line-height: 1;
}

.chapter-content {
  max-width: 940px;
}

.chapter-content > h2 {
  margin-top: 16px;
}

.chapter-content > p {
  font-size: 17px;
  line-height: 1.86;
}

.chapter-content > p strong {
  color: var(--color-text);
}

.chapter-content a:not(.button) {
  color: var(--color-accent-dark);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.chapter-actions {
  margin-top: 28px;
}

.client-guide-grid {
  display: grid;
  margin-top: 36px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.client-guide {
  padding: 28px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  background: var(--color-panel);
}

.client-guide:nth-child(even) {
  background: var(--color-panel-soft);
}

.client-guide-head {
  display: flex;
  align-items: center;
  gap: 15px;
  margin-bottom: 20px;
}

.client-guide-head h3 {
  margin: 0;
}

.client-guide p {
  font-size: 15px;
  line-height: 1.8;
}

.client-download-note {
  display: grid;
  margin-top: 18px;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 28px;
  align-items: center;
  padding: 28px;
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-xl);
  background: var(--color-accent-soft);
}

.client-download-note h3 {
  font-size: 22px;
}

.client-download-note p {
  margin-bottom: 0;
}

.completion-panel {
  display: grid;
  margin-top: 34px;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 20px;
  align-items: start;
  padding: 28px;
  border: 1px solid var(--color-success);
  border-radius: var(--radius-xl);
  background: var(--color-success-soft);
}

.completion-mark {
  display: grid;
  width: 52px;
  height: 52px;
  place-items: center;
  border: 1px solid var(--color-success);
  border-radius: var(--radius-pill);
  background: var(--color-panel);
  color: var(--color-success);
}

.completion-mark svg {
  width: 27px;
  height: 27px;
}

.completion-panel h3 {
  margin-bottom: 7px;
  font-size: 22px;
}

.completion-panel p {
  margin-bottom: 0;
}

.tutorial-followup {
  display: grid;
  max-width: 1120px;
  margin: 58px auto 0;
  grid-template-columns: minmax(260px, 0.72fr) minmax(0, 1.28fr);
  gap: 64px;
  padding: clamp(28px, 4vw, 48px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  background: var(--color-black-soft);
  color: var(--color-white);
}

.tutorial-followup h2 {
  margin-top: 22px;
  color: var(--color-white);
  font-size: clamp(30px, 3vw, 42px);
}

.tutorial-followup p {
  color: var(--color-panel-muted);
}

.tutorial-followup .button-ghost {
  color: var(--color-white);
}

.tutorial-followup .button-ghost:hover {
  background: var(--color-text);
}

@media (max-width: 980px) {
  .tutorial-intro-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .tutorial-route {
    max-width: 680px;
  }

  .tutorial-chapter,
  .tutorial-followup {
    grid-template-columns: 1fr;
  }

  .chapter-index {
    position: static;
    flex-direction: row;
    align-items: baseline;
  }

  .tutorial-chapter-shift .chapter-content {
    margin-left: 0;
  }

  .tutorial-followup {
    gap: 24px;
  }
}

@media (max-width: 760px) {
  .tutorial-intro {
    padding-top: 56px;
    padding-bottom: 58px;
  }

  .tutorial-intro-grid {
    gap: 36px;
  }

  .tutorial-route {
    padding: 20px;
  }

  .tutorial-route::before {
    left: 43px;
  }

  .guide-toc {
    width: calc(100% - (var(--gutter) * 2));
  }

  .tutorial-document {
    padding-top: 34px;
  }

  .tutorial-callout {
    margin-bottom: 36px;
  }

  .tutorial-chapter {
    gap: 18px;
    padding-top: 52px;
    padding-bottom: 52px;
  }

  .chapter-content > p {
    font-size: 16px;
  }

  .client-guide-grid {
    grid-template-columns: 1fr;
  }

  .client-download-note {
    grid-template-columns: 1fr;
  }

  .client-download-note .button {
    width: fit-content;
  }
}

@media (max-width: 520px) {
  .tutorial-intro-actions .button,
  .chapter-actions .button {
    width: 100%;
  }

  .tutorial-route-head {
    align-items: flex-start;
    flex-direction: column;
  }

  .tutorial-route-list li {
    grid-template-columns: 42px minmax(0, 1fr);
  }

  .tutorial-route-list span {
    width: 40px;
  }

  .client-guide,
  .client-download-note,
  .completion-panel {
    padding: 21px;
  }

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

  .tutorial-followup {
    padding: 24px;
  }
}