.page-faq {
  --faq-answer: rgba(242, 244, 248, .78);
  --faq-answer-soft: rgba(242, 244, 248, .64);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(18px, 3vw, 40px) clamp(28px, 5vw, 64px);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: -18% -12% auto -12%;
  height: min(560px, 78vw);
  background:
    radial-gradient(58% 100% at 22% 0%, rgba(245, 200, 107, .16), transparent 70%),
    radial-gradient(52% 100% at 80% 12%, rgba(111, 211, 232, .12), transparent 72%);
  pointer-events: none;
}

.page-faq .faq-hero > .shell {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 48px);
  margin-top: clamp(18px, 3vw, 34px);
  align-items: end;
}

.page-faq .faq-hero__title {
  margin: 12px 0 0;
  overflow-wrap: break-word;
}

.page-faq .faq-hero__lead {
  margin-top: 18px;
  max-width: 56ch;
  color: var(--faq-answer);
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 3vw, 30px);
}

.page-faq .faq-hero__figure {
  margin: 0;
}

.page-faq .media-frame img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 56px);
  padding-bottom: clamp(48px, 7vw, 96px);
}

.page-faq .faq-body {
  order: 1;
  min-width: 0;
}

/* ---------- 目录 ---------- */
.page-faq .faq-toc {
  order: 2;
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
  padding-block: 14px;
}

.page-faq .faq-toc__title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--gold);
}

.page-faq .faq-toc__list {
  display: flex;
  gap: 18px;
  margin: 0;
  padding: 0 0 4px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-faq .faq-toc__item {
  flex: 0 0 auto;
}

.page-faq .faq-toc__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 4px 0;
  font-size: 14px;
  line-height: 1.4;
  white-space: nowrap;
  color: var(--muted);
  text-decoration: none;
  transition: color .2s var(--ease);
}

.page-faq .faq-toc__tick {
  flex: 0 0 auto;
  width: 2px;
  height: 15px;
  background: var(--line-soft);
  transition: background .2s var(--ease), height .2s var(--ease);
}

.page-faq .faq-toc__link:hover,
.page-faq .faq-toc__link:focus-visible {
  color: var(--text);
}

.page-faq .faq-toc__link:hover .faq-toc__tick,
.page-faq .faq-toc__link:focus-visible .faq-toc__tick {
  background: var(--gold);
  height: 20px;
}

.page-faq .faq-toc__more {
  display: inline-block;
  margin-top: 14px;
  font-size: 13px;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--line-cool);
  padding-bottom: 2px;
}

.page-faq .faq-toc__more:hover,
.page-faq .faq-toc__more:focus-visible {
  color: var(--glow);
  border-bottom-color: var(--gold);
}

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  padding-top: clamp(26px, 4vw, 46px);
  border-top: 1px solid var(--line-soft);
  scroll-margin-top: 96px;
}

.page-faq .faq-group + .faq-group {
  margin-top: clamp(34px, 5vw, 64px);
}

.page-faq .faq-group__head {
  display: flex;
  align-items: flex-start;
  gap: clamp(10px, 2vw, 20px);
  margin-bottom: clamp(14px, 2.2vw, 24px);
}

.page-faq .faq-group__num {
  flex: 0 0 auto;
  padding-top: 7px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--gold);
}

.page-faq .faq-group__title {
  margin: 0;
  font-size: clamp(21px, 2.6vw, 30px);
  line-height: 1.25;
  letter-spacing: -.01em;
  color: var(--text);
}

.page-faq .faq-group__sub {
  margin: 7px 0 0;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-faq .faq-device-figure {
  margin: 0 0 clamp(14px, 2vw, 22px);
}

/* ---------- 折叠问答 ---------- */
.page-faq .faq-fold {
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-q {
  margin: 0;
}

.page-faq .faq-fold .fold__head {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: clamp(14px, 1.8vw, 20px) 0;
  background: transparent;
  border: 0;
  color: var(--text);
  font-family: inherit;
  font-size: clamp(16px, 1.5vw, 19px);
  font-weight: 600;
  line-height: 1.55;
  text-align: left;
  cursor: pointer;
  transition: color .2s var(--ease);
}

.page-faq .faq-fold .fold__head:hover,
.page-faq .faq-fold .fold__head:focus-visible {
  color: var(--glow);
}

.page-faq .faq-fold .fold__head:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 4px;
  border-radius: var(--r-sm);
}

.page-faq .faq-q__text {
  overflow-wrap: break-word;
}

.page-faq .faq-q__sign {
  position: relative;
  flex: 0 0 auto;
  width: 15px;
  height: 15px;
}

.page-faq .faq-q__sign::before,
.page-faq .faq-q__sign::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  height: 1.5px;
  margin-top: -.75px;
  background: var(--gold);
  transition: transform .26s var(--ease), background .26s var(--ease);
}

.page-faq .faq-q__sign::after {
  transform: rotate(90deg);
}

.page-faq .faq-fold .fold__head[aria-expanded="true"] .faq-q__sign::after {
  transform: rotate(0deg);
}

.page-faq .faq-fold .fold__body {
  padding: 0 0 clamp(16px, 2vw, 24px);
}

.page-faq .faq-fold .fold__body p {
  margin: 0;
  padding-left: 20px;
  border-left: 2px solid var(--line-gold);
  max-width: 62ch;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--faq-answer);
  overflow-wrap: break-word;
}

.page-faq .faq-fold .fold__body p a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--line-cool);
}

.page-faq .faq-fold .fold__body p a:hover,
.page-faq .faq-fold .fold__body p a:focus-visible {
  color: var(--glow);
  border-bottom-color: var(--gold);
}

/* ---------- 底部引导 ---------- */
.page-faq .faq-cta {
  margin-top: clamp(36px, 5vw, 64px);
  padding: clamp(22px, 3vw, 36px);
  display: grid;
  gap: 14px;
  border: 1px solid var(--line-gold);
  border-radius: var(--r-lg);
  background:
    linear-gradient(140deg, rgba(245, 200, 107, .12), rgba(30, 95, 191, .14) 55%, rgba(111, 211, 232, .08));
}

.page-faq .faq-cta__title {
  margin: 0;
  font-size: clamp(20px, 2.4vw, 26px);
  line-height: 1.3;
  color: var(--text);
}

.page-faq .faq-cta p {
  margin: 0;
  max-width: 52ch;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--faq-answer);
}

.page-faq .faq-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 4px;
}

/* ---------- 中等屏 ---------- */
@media (min-width: 700px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
  }

  .page-faq .faq-toc__list {
    flex-wrap: wrap;
    overflow-x: visible;
  }
}

/* ---------- 桌面：右侧粘性目录 ---------- */
@media (min-width: 1040px) {
  .page-faq .faq-layout {
    grid-template-columns: minmax(0, 1fr) 264px;
    align-items: start;
  }

  .page-faq .faq-toc {
    order: 2;
    position: sticky;
    top: 92px;
    border-top: 0;
    border-bottom: 0;
    border-left: 1px solid var(--line-soft);
    padding: 0 0 0 20px;
  }

  .page-faq .faq-toc__list {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 0;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-toc__item {
    flex: 0 1 auto;
  }

  .page-faq .faq-toc__link {
    white-space: normal;
    padding: 7px 0;
    font-size: 13.5px;
  }

  .page-faq .faq-toc__tick {
    height: 13px;
  }
}

@media (min-width: 1240px) {
  .page-faq .faq-layout {
    grid-template-columns: minmax(0, 1fr) 288px;
    gap: clamp(40px, 5vw, 72px);
  }
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-q__sign::before,
  .page-faq .faq-q__sign::after,
  .page-faq .faq-toc__tick,
  .page-faq .faq-fold .fold__head {
    transition: none;
  }
}