.page-faq {
  --faq-sticky-offset: calc(var(--bar-h-stuck) + 74px);
  position: relative;
}

/* ============ 首屏 ============ */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(24px, 5vw, 64px) 0 clamp(20px, 3vw, 40px);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: -30% -15% auto -15%;
  height: 78%;
  pointer-events: none;
  background:
    radial-gradient(58% 78% at 16% 4%, rgba(0, 229, 255, .15), transparent 68%),
    radial-gradient(48% 70% at 88% 12%, rgba(59, 30, 110, .52), transparent 70%);
}

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

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(16px, 3vw, 32px);
  margin-top: 18px;
}

.page-faq .faq-hero__title {
  margin: 12px 0 0;
  font-size: clamp(32px, 6vw, 66px);
  line-height: 1.14;
  letter-spacing: .02em;
  color: var(--white);
  text-shadow: 0 0 22px rgba(0, 229, 255, .18);
}

.page-faq .faq-hero__intro {
  margin: 18px 0 0;
  max-width: 34em;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.8;
  color: var(--mist);
}

.page-faq .faq-hero__acts {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-faq .faq-hero__note {
  display: none;
}

.page-faq .faq-hero__media {
  margin: clamp(24px, 4vw, 44px) 0 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-faq .faq-hero__media .media__img,
.page-faq .faq-signup__media .media__img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ============ 主题锚点 ============ */
.page-faq .faq-index {
  position: sticky;
  top: var(--bar-h-stuck);
  z-index: 30;
  margin-top: clamp(18px, 3vw, 32px);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(5, 11, 26, .97), rgba(5, 11, 26, .88));
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.page-faq .faq-index__inner {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-top: 10px;
  padding-bottom: 10px;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.page-faq .faq-index__inner::-webkit-scrollbar {
  display: none;
}

.page-faq .faq-index__label {
  flex: 0 0 auto;
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--mist);
  text-transform: uppercase;
}

.page-faq .faq-anchors {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-anchor {
  display: inline-flex;
  align-items: baseline;
  gap: 7px;
  padding: 7px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--mist);
  font-size: 14px;
  line-height: 1.4;
  white-space: nowrap;
  text-decoration: none;
  transition: color .18s var(--ease), border-color .18s var(--ease), background-color .18s var(--ease);
}

.page-faq .faq-anchor:hover,
.page-faq .faq-anchor:focus-visible {
  color: var(--white);
  border-color: var(--neon);
  background: rgba(0, 229, 255, .09);
}

.page-faq .faq-anchor__num {
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--neon);
}

/* ============ 主体区 ============ */
.page-faq .faq-main {
  padding: clamp(26px, 4vw, 52px) 0 clamp(56px, 8vw, 104px);
}

.page-faq .faq-filter {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-filter__count {
  margin: 0;
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--mist);
}

.page-faq .faq-group,
.page-faq .faq-escalate {
  padding-top: clamp(34px, 5vw, 60px);
  scroll-margin-top: var(--faq-sticky-offset);
}

.page-faq .faq-group__head {
  margin-bottom: 18px;
  max-width: 42em;
}

.page-faq .faq-group__head .section__index {
  color: var(--neon);
}

.page-faq .faq-group__head .section__note {
  margin-top: 8px;
}

/* ============ 折叠问答 ============ */
.page-faq .faq-acc {
  display: grid;
  gap: 10px;
}

.page-faq .accordion__item {
  position: relative;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--card);
  overflow: hidden;
  transition: border-color .18s var(--ease), background-color .18s var(--ease);
}

.page-faq .accordion__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  bottom: 12px;
  width: 2px;
  background: var(--neon);
  opacity: 0;
  transform: scaleY(.35);
  transform-origin: 50% 0;
  transition: opacity .24s var(--ease), transform .24s var(--ease);
}

.page-faq .accordion__item:hover {
  border-color: var(--blue-step);
}

.page-faq .accordion__item.is-open,
.page-faq .accordion__item:has(.accordion__trigger[aria-expanded="true"]) {
  border-color: var(--blue-step);
  background: var(--blue-step);
}

.page-faq .accordion__item.is-open::before,
.page-faq .accordion__item:has(.accordion__trigger[aria-expanded="true"])::before {
  opacity: 1;
  transform: scaleY(1);
}

.page-faq .faq-item__q {
  margin: 0;
  font-size: inherit;
  font-weight: inherit;
}

.page-faq .faq-q {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  width: 100%;
  padding: 17px 18px;
  border: 0;
  background: none;
  color: var(--white);
  font-family: var(--font-sans);
  font-size: clamp(15px, 1.7vw, 17px);
  font-weight: 600;
  line-height: 1.6;
  text-align: left;
  cursor: pointer;
  transition: color .18s var(--ease);
}

.page-faq .faq-q:hover {
  color: var(--neon);
}

.page-faq .faq-q__num {
  flex: 0 0 auto;
  padding-top: 3px;
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--neon);
}

.page-faq .faq-q__text {
  flex: 1 1 auto;
}

.page-faq .faq-q__icon {
  position: relative;
  flex: 0 0 auto;
  width: 16px;
  height: 16px;
  margin-top: 5px;
}

.page-faq .faq-q__icon::before,
.page-faq .faq-q__icon::after {
  content: "";
  position: absolute;
  background: var(--neon);
  border-radius: 2px;
  transition: transform .24s var(--ease);
}

.page-faq .faq-q__icon::before {
  left: 0;
  right: 0;
  top: 7px;
  height: 2px;
}

.page-faq .faq-q__icon::after {
  top: 0;
  bottom: 0;
  left: 7px;
  width: 2px;
}

.page-faq .accordion__trigger[aria-expanded="true"] .faq-q__icon::after {
  transform: scaleY(0);
}

.page-faq .faq-panel {
  padding: 0 18px 20px;
}

.page-faq .faq-panel__grid {
  display: grid;
  gap: 16px;
  padding-top: 16px;
  border-top: 1px solid rgba(0, 229, 255, .22);
}

.page-faq .faq-panel__body p {
  margin: 0;
  max-width: 34em;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

.page-faq .faq-panel__body a {
  color: var(--neon);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 229, 255, .42);
}

.page-faq .faq-panel__body a:hover {
  border-color: var(--neon);
}

.page-faq .faq-next {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 14px 16px;
  border: 1px solid rgba(255, 179, 71, .48);
  border-radius: 12px;
  background: linear-gradient(155deg, rgba(255, 179, 71, .14), rgba(255, 179, 71, .02));
}

.page-faq .faq-next__label {
  margin: 0;
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--gold);
  text-transform: uppercase;
}

.page-faq .faq-next__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--white);
}

.page-faq .faq-next__link {
  align-self: flex-start;
  padding-bottom: 2px;
  font-size: 14px;
  color: var(--gold);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 179, 71, .55);
  transition: border-color .18s var(--ease);
}

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

/* 注册体验面板配图 */
.page-faq .faq-signup__media {
  margin: 0 0 18px;
  border: 1px solid var(--line);
  border-radius: 12px;
  overflow: hidden;
}

/* ============ 升级路径 ============ */
.page-faq .faq-escalate__grid {
  display: grid;
  gap: 14px;
}

.page-faq .faq-esc-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 22px;
}

.page-faq .faq-esc-card .card__index {
  margin: 0;
  font-size: 13px;
  letter-spacing: .16em;
  color: var(--gold);
}

.page-faq .faq-esc-card .card__title {
  margin: 0;
  font-size: 19px;
  line-height: 1.4;
  color: var(--white);
}

.page-faq .faq-esc-card .card__body {
  margin: 0;
  flex: 1 1 auto;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

.page-faq .faq-esc-card .card__foot {
  margin-top: 4px;
}

.page-faq .faq-mail {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 16px;
  margin-top: 18px;
  padding: 16px 18px;
  border: 1px dashed var(--line);
  border-radius: 12px;
  background: rgba(16, 28, 51, .62);
}

.page-faq .faq-mail__label {
  margin: 0;
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--mist);
  text-transform: uppercase;
}

.page-faq .faq-mail__val {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--white);
  word-break: break-all;
}

/* ============ 响应式 ============ */
@media (min-width: 760px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: end;
  }

  .page-faq .faq-hero__note {
    display: block;
    align-self: end;
    justify-self: end;
    color: var(--neon);
    opacity: .62;
  }

  .page-faq .faq-q {
    padding: 19px 22px;
  }

  .page-faq .faq-panel {
    padding: 0 22px 22px;
  }

  .page-faq .faq-panel__grid:has(.faq-next) {
    grid-template-columns: minmax(0, 1fr) 272px;
    align-items: start;
  }

  .page-faq .faq-escalate__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 1080px) {
  .page-faq .faq-index__inner {
    gap: 18px;
  }

  .page-faq .faq-anchor {
    padding: 8px 16px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-q__icon::before,
  .page-faq .faq-q__icon::after,
  .page-faq .accordion__item::before,
  .page-faq .faq-anchor,
  .page-faq .faq-next__link {
    transition: none;
  }
}