.faq-hero {
  position: relative;
  overflow-x: clip;
  padding-top: clamp(56px, 8vw, 104px);
  padding-bottom: clamp(68px, 9vw, 116px);
  background: var(--color-mist);
}

.faq-hero::after {
  position: absolute;
  right: -8%;
  bottom: -42%;
  width: min(46vw, 620px);
  aspect-ratio: 1;
  border: 1px solid var(--color-line-strong);
  border-radius: var(--radius-pill);
  content: "";
  opacity: .58;
  pointer-events: none;
}

.faq-hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(320px, .72fr);
  align-items: center;
  gap: clamp(36px, 7vw, 92px);
}

.faq-hero-copy {
  max-width: 680px;
}

.faq-hero-copy h1 {
  max-width: 650px;
  margin-top: 22px;
}

.faq-lead {
  max-width: 620px;
  margin-bottom: 28px;
  color: var(--color-muted);
  font-size: clamp(17px, 1.5vw, 20px);
  line-height: 1.85;
}

.diagnostic-panel {
  position: relative;
  padding: clamp(24px, 3vw, 34px);
  overflow: hidden;
  border-radius: var(--radius-large);
  background: var(--color-board);
  color: var(--color-surface);
  box-shadow: var(--shadow-card);
  transform: rotate(2deg);
}

.diagnostic-panel::before {
  position: absolute;
  top: 0;
  right: 28px;
  bottom: 0;
  width: 1px;
  background: var(--color-board-highlight);
  content: "";
}

.diagnostic-head {
  display: flex;
  align-items: center;
  gap: 13px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--color-board-highlight);
}

.diagnostic-head strong {
  color: var(--color-surface);
}

.diagnostic-index,
.category-number {
  color: var(--color-brand-deep);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .12em;
}

.diagnostic-index {
  color: var(--color-amber);
}

.diagnostic-steps {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
}

.diagnostic-steps li {
  display: grid;
  grid-template-columns: 38px 1fr;
  gap: 14px;
  padding-top: 20px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--color-board-highlight);
}

.diagnostic-steps li:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.diagnostic-steps li > span {
  color: var(--color-amber);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
}

.diagnostic-steps strong,
.diagnostic-steps small {
  display: block;
}

.diagnostic-steps strong {
  margin-bottom: 3px;
  color: var(--color-surface);
}

.diagnostic-steps small {
  color: var(--color-pin);
  line-height: 1.6;
}

.faq-navigation-wrap {
  position: relative;
  z-index: 8;
  margin-top: -24px;
}

.faq-navigation-wrap .toc-nav {
  justify-content: center;
}

.faq-category {
  scroll-margin-top: 82px;
}

.category-layout {
  display: grid;
  grid-template-columns: minmax(220px, .55fr) minmax(0, 1.45fr);
  align-items: start;
  gap: clamp(36px, 7vw, 90px);
}

.category-layout-reverse {
  grid-template-columns: minmax(0, 1.45fr) minmax(220px, .55fr);
}

.category-layout-reverse .category-heading {
  grid-column: 2;
  grid-row: 1;
}

.category-layout-reverse .faq-list {
  grid-column: 1;
  grid-row: 1;
}

.category-heading {
  position: sticky;
  top: 86px;
}

.category-heading h2 {
  margin-top: 13px;
  margin-bottom: 16px;
}

.category-heading p {
  margin-bottom: 0;
  color: var(--color-muted);
}

.faq-category .faq-list {
  min-width: 0;
}

.faq-category .faq-item {
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.faq-category .faq-item[open] {
  transform: translateY(-2px);
  box-shadow: var(--shadow-card);
}

.faq-category .faq-answer p {
  line-height: 1.9;
}

.faq-next {
  padding-top: clamp(56px, 7vw, 88px);
  padding-bottom: clamp(72px, 9vw, 116px);
}

.faq-next-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 32px;
  padding: clamp(28px, 5vw, 52px);
  border-radius: var(--radius-large);
  background: var(--color-surface);
  box-shadow: var(--shadow-card);
}

.faq-next-panel h2 {
  margin-top: 12px;
  margin-bottom: 12px;
}

.faq-next-panel p {
  max-width: 700px;
  margin-bottom: 0;
  color: var(--color-muted);
}

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

@media (max-width: 900px) {
  .faq-hero-grid {
    grid-template-columns: 1fr;
  }

  .diagnostic-panel {
    max-width: 640px;
    transform: none;
  }

  .category-layout,
  .category-layout-reverse {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .category-layout-reverse .category-heading,
  .category-layout-reverse .faq-list {
    grid-column: 1;
  }

  .category-layout-reverse .category-heading {
    grid-row: 1;
  }

  .category-layout-reverse .faq-list {
    grid-row: 2;
  }

  .category-heading {
    position: static;
    max-width: 680px;
  }

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

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

@media (max-width: 640px) {
  .faq-hero {
    padding-top: 42px;
    padding-bottom: 66px;
  }

  .faq-hero::after {
    display: none;
  }

  .faq-hero-grid {
    gap: 32px;
  }

  .faq-lead {
    font-size: 16px;
  }

  .diagnostic-panel {
    padding: 22px;
  }

  .faq-navigation-wrap {
    margin-top: -20px;
  }

  .faq-navigation-wrap .toc-nav {
    justify-content: flex-start;
  }

  .faq-category {
    scroll-margin-top: 74px;
  }

  .faq-next-panel {
    padding: 24px;
  }
}