.page-faq {
  scroll-behavior: smooth;
}

/* ---------- Hero ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  color: #fff;
  background:
    radial-gradient(circle at 72% 30%, rgba(27, 58, 123, 0.55), transparent 46%),
    linear-gradient(135deg, var(--color-ink) 0%, var(--color-deep) 100%);
  padding: calc(var(--header-h) + 40px) 0 56px;
}
.page-faq .faq-hero__grid {
  display: grid;
  gap: 24px;
  align-items: center;
}
.page-faq .faq-hero__main {
  max-width: 680px;
}
.page-faq .faq-hero__eyebrow {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  color: rgba(255, 255, 255, 0.56);
  margin: 28px 0 14px;
}
.page-faq .faq-hero h1 {
  font-size: clamp(2.2rem, 5.6vw, 3.6rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin: 0 0 20px;
}
.page-faq .faq-hero__desc {
  font-size: 1.05rem;
  line-height: 1.75;
  color: rgba(255, 255, 255, 0.78);
  max-width: 600px;
  margin: 0 0 28px;
}
.page-faq .faq-hero__search {
  max-width: 480px;
}
.page-faq .faq-hero__input {
  box-sizing: border-box;
  width: 100%;
  padding: 14px 20px;
  border: 1px solid rgba(255, 255, 255, 0.24);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
  font-size: 0.95rem;
  outline: none;
  transition: border-color 0.2s ease, background 0.2s ease;
}
.page-faq .faq-hero__input::placeholder {
  color: rgba(255, 255, 255, 0.54);
}
.page-faq .faq-hero__input:focus {
  border-color: var(--color-accent);
  background: rgba(255, 255, 255, 0.12);
}
.page-faq .faq-hero__figure {
  max-width: 220px;
  margin: 8px auto 0;
}
.page-faq .faq-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 8px;
}
.page-faq .faq-hero .breadcrumb__link {
  color: rgba(255, 255, 255, 0.78);
}
.page-faq .faq-hero .breadcrumb__link:hover {
  color: #fff;
}
.page-faq .faq-hero .breadcrumb__item {
  color: rgba(255, 255, 255, 0.46);
}

/* ---------- Popular ---------- */
.page-faq .faq-popular {
  background: var(--color-paper);
  padding: var(--space-6) 0;
}
.page-faq .faq-popular__head {
  margin-bottom: 40px;
}
.page-faq .faq-popular__head h2 {
  font-size: 2rem;
  letter-spacing: -0.01em;
  color: var(--color-body);
  margin: 12px 0 0;
}
.page-faq .faq-popular__grid {
  display: grid;
  gap: 16px;
}
.page-faq .faq-popular__card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  background: #fff;
  border: 1px solid var(--color-line);
  border-left: 3px solid var(--color-accent);
  border-radius: 10px;
  padding: 20px 22px;
  color: var(--color-body);
  text-decoration: none;
  box-shadow: 0 2px 8px rgba(10, 15, 28, 0.04);
  transition: transform 0.2s var(--ease-out), box-shadow 0.2s var(--ease-out), border-color 0.2s var(--ease-out);
}
.page-faq .faq-popular__card:hover {
  transform: translateY(-3px);
  border-color: var(--color-accent);
  box-shadow: 0 10px 22px rgba(10, 15, 28, 0.08);
}
.page-faq .faq-popular__code {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--color-accent);
}
.page-faq .faq-popular__question {
  margin: 0;
  font-size: 1.1rem;
  line-height: 1.4;
  color: var(--color-body);
}
.page-faq .faq-popular__summary {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.6;
  color: var(--color-muted);
}
.page-faq .faq-popular__action {
  margin-top: auto;
  font-size: 0.83rem;
  font-weight: 600;
  color: var(--color-accent);
}

/* ---------- Category / Research layout ---------- */
.page-faq .faq-category {
  background: #fff;
  padding: var(--space-6) 0;
}
.page-faq .faq-category__layout {
  display: grid;
  gap: 48px;
  align-items: start;
}
.page-faq .faq-index {
  position: sticky;
  top: calc(var(--header-h) + 24px);
}
.page-faq .faq-index__label {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-muted);
}
.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0 0 4px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
}
.page-faq .faq-index__list li {
  flex-shrink: 0;
  display: flex;
}
.page-faq .faq-index__list a {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border: 1px solid var(--color-line);
  border-radius: 999px;
  color: var(--color-body);
  font-size: 0.92rem;
  text-decoration: none;
  transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}
.page-faq .faq-index__list a:hover {
  background: var(--color-paper);
  border-color: var(--color-accent);
  color: var(--color-accent);
}
.page-faq .faq-index__num {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--color-muted);
}
.page-faq .faq-index__list a:hover .faq-index__num {
  color: var(--color-accent);
}
.page-faq .faq-index__note {
  display: none;
  margin-top: 20px;
  padding: 14px 16px;
  border-left: 2px solid var(--color-accent);
  border-radius: 0 8px 8px 0;
  background: var(--color-paper);
}
.page-faq .faq-index__note p {
  margin: 0;
  font-size: 0.82rem;
  line-height: 1.6;
  color: var(--color-muted);
}
.page-faq .faq-category__head {
  margin-bottom: 36px;
}
.page-faq .faq-category__head h2 {
  font-size: 2rem;
  letter-spacing: -0.01em;
  color: var(--color-body);
  margin: 12px 0 0;
}

/* ---------- Groups & details ---------- */
.page-faq .faq-group {
  margin-bottom: 48px;
}
.page-faq .faq-group:last-child {
  margin-bottom: 0;
}
.page-faq .faq-group__head {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-line);
  margin-bottom: 18px;
}
.page-faq .faq-group__tag {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--color-accent);
  padding-top: 2px;
}
.page-faq .faq-group__head h3 {
  font-size: 1.3rem;
  letter-spacing: -0.01em;
  color: var(--color-body);
  margin: 0 0 2px;
}
.page-faq .faq-group__head p {
  margin: 0;
  font-size: 0.84rem;
  color: var(--color-muted);
}
.page-faq .faq-group__items {
  display: grid;
  gap: 12px;
}
.page-faq .faq-item {
  border: 1px solid var(--color-line);
  border-radius: 10px;
  background: var(--color-paper);
  overflow: hidden;
  transition: border-color 0.2s ease, background 0.2s ease;
}
.page-faq .faq-item[open] {
  border-color: rgba(242, 99, 58, 0.45);
  background: #fff;
  box-shadow: inset 3px 0 0 var(--color-accent);
}
.page-faq .faq-item__summary {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 18px;
  list-style: none;
  cursor: pointer;
  font-size: 0.97rem;
  font-weight: 600;
  line-height: 1.45;
  color: var(--color-body);
}
.page-faq .faq-item__summary::-webkit-details-marker {
  display: none;
}
.page-faq .faq-item__summary:hover .faq-item__q {
  color: var(--color-accent);
}
.page-faq .faq-item__num {
  flex-shrink: 0;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--color-accent);
  background: rgba(242, 99, 58, 0.1);
  padding: 2px 8px;
  border-radius: 4px;
}
.page-faq .faq-item__q {
  flex: 1;
}
.page-faq .faq-item__icon {
  position: relative;
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  margin-left: auto;
}
.page-faq .faq-item__icon::before,
.page-faq .faq-item__icon::after {
  content: "";
  position: absolute;
  background: var(--color-muted);
  transition: transform 0.2s var(--ease-out), background 0.2s var(--ease-out);
}
.page-faq .faq-item__icon::before {
  width: 12px;
  height: 2px;
  top: 9px;
  left: 4px;
}
.page-faq .faq-item__icon::after {
  width: 2px;
  height: 12px;
  top: 4px;
  left: 9px;
}
.page-faq .faq-item[open] .faq-item__icon::before {
  transform: rotate(0deg);
  background: var(--color-accent);
}
.page-faq .faq-item[open] .faq-item__icon::after {
  transform: scaleY(0);
  background: var(--color-accent);
}
.page-faq .faq-item__a {
  padding: 0 18px 18px;
  border-top: 1px solid var(--color-line);
}
.page-faq .faq-item__a p {
  margin: 14px 0 0;
  font-size: 0.93rem;
  line-height: 1.72;
  color: var(--color-body);
}
.page-faq .faq-item__a a {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.page-faq .faq-item__a a:hover {
  text-decoration: none;
}
.page-faq .faq-steps {
  margin: 12px 0 0;
  padding-left: 20px;
  display: grid;
  gap: 6px;
}
.page-faq .faq-steps li {
  font-size: 0.93rem;
  line-height: 1.6;
  color: var(--color-body);
}
.page-faq .faq-step {
  margin: 18px 0 0;
}
.page-faq .faq-step img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--color-line);
  border-radius: 10px;
}
.page-faq .faq-step figcaption {
  margin-top: 10px;
  font-size: 0.82rem;
  line-height: 1.6;
  color: var(--color-muted);
}

/* ---------- Support ---------- */
.page-faq .faq-support {
  position: relative;
  overflow: hidden;
  background: var(--color-deep);
  color: #fff;
  padding: var(--space-6) 0;
}
.page-faq .faq-support::before {
  content: "";
  position: absolute;
  width: 260px;
  height: 260px;
  top: -100px;
  right: -100px;
  border-radius: 50%;
  background: rgba(242, 99, 58, 0.14);
}
.page-faq .faq-support__grid {
  position: relative;
  display: grid;
  gap: 40px;
}
.page-faq .faq-support__eyebrow {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  color: var(--color-accent);
}
.page-faq .faq-support__note h2 {
  margin: 0 0 16px;
  font-size: 2rem;
  letter-spacing: -0.01em;
}
.page-faq .faq-support__note > p {
  margin: 0 0 24px;
  max-width: 540px;
  font-size: 0.96rem;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.76);
}
.page-faq .faq-support__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}
.page-faq .faq-support__channels {
  padding: 26px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.06);
}
.page-faq .faq-support__channel-list {
  margin: 0;
  padding: 0;
  display: grid;
  gap: 18px;
}
.page-faq .faq-support__channel {
  display: grid;
  gap: 4px;
}
.page-faq .faq-support__channel dt {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent);
}
.page-faq .faq-support__channel dd {
  margin: 0;
  font-size: 0.96rem;
  line-height: 1.5;
}
.page-faq .faq-support__channel-note {
  margin: 22px 0 0;
  padding-top: 18px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  font-size: 0.8rem;
  line-height: 1.65;
  color: rgba(255, 255, 255, 0.64);
}

/* ---------- Tablet ---------- */
@media (min-width: 768px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: 1.1fr 0.9fr;
    gap: 40px;
  }
  .page-faq .faq-hero__figure {
    max-width: 400px;
    margin: 0;
    justify-self: end;
  }
  .page-faq .faq-popular__grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .page-faq .faq-category__layout {
    grid-template-columns: 210px minmax(0, 1fr);
    gap: 48px;
  }
  .page-faq .faq-index__list {
    display: grid;
    gap: 4px;
    padding: 0;
    overflow: visible;
  }
  .page-faq .faq-index__list li {
    display: block;
    flex-shrink: 0;
  }
  .page-faq .faq-index__list a {
    border: 1px solid transparent;
    border-radius: 8px;
    padding: 10px 14px;
  }
  .page-faq .faq-index__note {
    display: block;
  }
  .page-faq .faq-support__grid {
    grid-template-columns: 1.05fr 0.95fr;
    align-items: center;
    gap: 48px;
  }
}

/* ---------- Desktop ---------- */
@media (min-width: 1024px) {
  .page-faq .faq-hero {
    padding: calc(var(--header-h) + 72px) 0 84px;
  }
  .page-faq .faq-hero__grid {
    grid-template-columns: 1.15fr 0.85fr;
    gap: 56px;
  }
  .page-faq .faq-popular__grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .page-faq .faq-category__layout {
    grid-template-columns: 240px minmax(0, 1fr);
    gap: 72px;
  }
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq,
  .page-faq *,
  .page-faq *::before,
  .page-faq *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}