.faq-hero {
  position: relative;
  background:
    radial-gradient(circle at 16% 24%, var(--color-error-glow), transparent 30%),
    radial-gradient(circle at 84% 72%, var(--color-accent-glow), transparent 32%),
    var(--color-bg);
}

.faq-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--color-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-grid) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(to bottom, transparent, var(--color-text), transparent);
  -webkit-mask-image: linear-gradient(to bottom, transparent, var(--color-text), transparent);
  pointer-events: none;
}

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

.faq-hero-copy {
  max-width: 900px;
  margin-inline: auto;
  text-align: center;
}

.faq-hero-copy h1 {
  max-width: 900px;
  margin-inline: auto;
}

.faq-hero-copy .lead {
  max-width: 790px;
  margin-inline: auto;
}

.faq-hero-actions {
  margin-top: 25px;
  justify-content: center;
}

.faq-topic-rail {
  max-width: 1120px;
  margin: 54px auto 0;
  padding: 8px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
  background: var(--color-bg);
  box-shadow: var(--shadow-device);
}

.faq-topic-rail a {
  min-height: 112px;
  padding: 18px;
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  justify-content: center;
  background: var(--color-panel);
  transition: transform var(--transition-fast), background var(--transition-fast);
}

.faq-topic-rail a:hover {
  transform: translateY(-3px);
  background: var(--color-accent-soft);
}

.faq-topic-label {
  margin-bottom: 7px;
  color: var(--color-accent-dark);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 750;
  letter-spacing: 0.05em;
}

.faq-topic-rail strong {
  font-size: 14px;
  line-height: 1.55;
}

.faq-navigation {
  padding-bottom: 0;
}

.faq-navigation-title {
  margin-bottom: 18px;
  font-size: 20px;
}

.faq-category {
  scroll-margin-top: var(--nav-height);
}

.faq-category-layout {
  display: grid;
  grid-template-columns: minmax(230px, 0.34fr) minmax(0, 1fr);
  align-items: start;
  gap: clamp(28px, 6vw, 76px);
}

.faq-category-intro {
  position: sticky;
  top: calc(var(--nav-height) + 84px);
}

.faq-category-intro h2 {
  font-size: clamp(29px, 3vw, 42px);
}

.faq-category-intro p:last-child {
  font-size: 15px;
}

.faq-item[open] {
  border-color: var(--color-accent);
}

.faq-item summary {
  transition: color var(--transition-fast), background var(--transition-fast);
}

.faq-item summary:hover {
  color: var(--color-accent-dark);
  background: var(--color-panel);
  border-radius: var(--radius-lg);
}

.faq-item[open] summary {
  color: var(--color-accent-dark);
}

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

.faq-next-step {
  padding: clamp(28px, 5vw, 54px);
  border: 1px solid var(--color-border);
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 36px;
  box-shadow: var(--shadow-card);
}

.faq-next-step h2 {
  margin-bottom: 10px;
}

.faq-next-step p {
  max-width: 760px;
}

.faq-next-actions {
  max-width: 260px;
  justify-content: flex-end;
}

@media (max-width: 980px) {
  .faq-topic-rail {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .faq-category-layout {
    grid-template-columns: 1fr;
  }

  .faq-category-intro {
    position: static;
    max-width: 760px;
  }

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

  .faq-next-actions {
    max-width: none;
    justify-content: flex-start;
  }
}

@media (max-width: 640px) {
  .faq-hero {
    padding-top: 54px;
  }

  .faq-topic-rail {
    margin-top: 38px;
    grid-template-columns: 1fr;
    border-radius: var(--radius-lg);
  }

  .faq-topic-rail a {
    min-height: 84px;
  }

  .faq-navigation {
    padding-top: 40px;
  }

  .faq-category-layout {
    gap: 24px;
  }

  .faq-item summary {
    padding-right: 48px;
  }

  .faq-next-actions {
    width: 100%;
  }

  .faq-next-actions .button {
    width: 100%;
  }
}