.page-faq {
  --faq-idx-w: 218px;
  position: relative;
  display: block;
  padding-bottom: 32px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: 34px 0 30px;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(115% 95% at 92% -18%, rgba(106, 13, 173, .58), transparent 62%),
    radial-gradient(80% 65% at -8% 24%, rgba(0, 229, 255, .16), transparent 64%),
    var(--ink);
}
.page-faq .faq-hero .scanline {
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: .5;
}
.page-faq .faq-hero > .wrap {
  position: relative;
  z-index: 1;
}
.page-faq .faq-hero .breadcrumb {
  margin-bottom: 22px;
  font-size: 13px;
  color: var(--muted);
}
.page-faq .faq-hero .breadcrumb a {
  color: var(--cyan);
  text-decoration: none;
}
.page-faq .faq-hero .breadcrumb a:hover {
  text-decoration: underline;
}
.page-faq .faq-hero__tag {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .12em;
  color: var(--cyan);
}
.page-faq .faq-hero__title {
  max-width: 22em;
  margin: 0 0 16px;
  font-family: var(--font-head);
  font-size: clamp(26px, 6vw, 40px);
  font-weight: 900;
  line-height: 1.25;
  letter-spacing: .01em;
  color: var(--text);
  text-shadow: 0 0 8px rgba(106, 13, 173, .6), 0 0 4px rgba(0, 229, 255, .25);
}
.page-faq .faq-hero__lead {
  max-width: 46em;
  margin: 0 0 26px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--text);
}
.page-faq .faq-hero__lead::after {
  content: "";
  display: block;
  width: 72px;
  height: 3px;
  margin-top: 18px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--purple-hi), var(--cyan));
}
.page-faq .faq-hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-faq .faq-hero__stats li {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 14px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--purple-hi);
  border-radius: var(--r-s);
  background: rgba(20, 20, 28, .74);
}
.page-faq .faq-hero__n {
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 500;
  color: var(--cyan-soft);
}
.page-faq .faq-hero__k {
  font-size: 13px;
  color: var(--muted);
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-body {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
  padding-top: 28px;
}
.page-faq .faq-groups { min-width: 0; }

/* ---------- 左侧分类索引 ---------- */
.page-faq .faq-index {
  min-width: 0;
  padding: 6px;
  border: 1px solid var(--line);
  border-radius: var(--r-m);
  background: var(--panel);
  scroll-margin-top: calc(var(--bar) + 20px);
}
.page-faq .faq-index__head {
  margin: 0;
  padding: 10px 12px 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--muted);
}
.page-faq .faq-index__list {
  display: flex;
  gap: 6px;
  margin: 0;
  padding: 0 4px 6px;
  overflow-x: auto;
  list-style: none;
  scrollbar-width: thin;
}
.page-faq .faq-index__list li { flex: 0 0 auto; }
.page-faq .faq-index__link {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 12px;
  border-bottom: 2px solid transparent;
  border-radius: var(--r-s);
  color: var(--text);
  font-size: 14px;
  text-decoration: none;
  white-space: nowrap;
  transition: background .2s var(--ease), border-color .2s var(--ease), color .2s var(--ease);
}
.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  background: var(--raise);
  border-bottom-color: var(--cyan);
  color: var(--cyan-soft);
}
.page-faq .faq-index__link:focus-visible {
  outline: 2px solid var(--cyan-soft);
  outline-offset: 1px;
}
.page-faq .faq-index__num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--cyan);
}

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  margin-bottom: 46px;
  scroll-margin-top: calc(var(--bar) + 26px);
}
.page-faq .faq-group:last-of-type { margin-bottom: 30px; }
.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: baseline;
  column-gap: 12px;
  row-gap: 8px;
  margin-bottom: 18px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line-cyan);
}
.page-faq .faq-group__num {
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 500;
  color: var(--purple-hi);
  text-shadow: 0 0 10px rgba(166, 77, 255, .65);
}
.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-head);
  font-size: 21px;
  font-weight: 800;
  line-height: 1.4;
  letter-spacing: .01em;
  color: var(--text);
}
.page-faq .faq-group__note {
  grid-column: 1 / -1;
  max-width: 44em;
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 插图 ---------- */
.page-faq .faq-fig {
  margin: 0 0 20px;
}
.page-faq .faq-fig .media-frame {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--r-m);
  background: var(--raise);
}
.page-faq .faq-fig .media-frame .scanline {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  opacity: .4;
}
.page-faq .faq-fig .media-frame img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}
.page-faq .faq-fig .media-fig__cap {
  margin-top: 8px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 折叠问答 ---------- */
.page-faq .fold {
  margin-bottom: 10px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--r-m);
  background: var(--panel);
  transition: border-color .2s var(--ease), transform .2s var(--ease);
}
.page-faq .fold:hover {
  border-color: var(--line-cyan);
  transform: translateY(-2px);
}
.page-faq .fold__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 12px;
  width: 100%;
  padding: 15px 16px;
  border: 0;
  background: transparent;
  color: var(--text);
  font: inherit;
  text-align: left;
  cursor: pointer;
  transition: background .2s var(--ease);
}
.page-faq .fold__head:hover { background: var(--raise); }
.page-faq .fold__head:focus-visible {
  outline: 2px solid var(--cyan-soft);
  outline-offset: -2px;
}
.page-faq .fold__idx {
  padding: 3px 7px;
  border: 1px solid rgba(0, 229, 255, .28);
  border-radius: var(--r-s);
  background: rgba(0, 229, 255, .08);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: .04em;
  color: var(--cyan);
  white-space: nowrap;
}
.page-faq .fold__title {
  font-size: 16px;
  font-weight: 600;
  line-height: 1.6;
}
.page-faq .fold__sign {
  position: relative;
  width: 14px;
  height: 14px;
  flex: none;
}
.page-faq .fold__sign::before,
.page-faq .fold__sign::after {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 14px;
  height: 2px;
  border-radius: 1px;
  background: var(--cyan);
  transform: translateY(-50%);
  transition: transform .22s var(--ease), opacity .22s var(--ease);
}
.page-faq .fold__sign::after { transform: translateY(-50%) rotate(90deg); }
.page-faq .fold__head[aria-expanded="true"] .fold__sign::after {
  transform: translateY(-50%) rotate(0deg);
  opacity: 0;
}
.page-faq .fold__inner { padding: 0 16px 18px; }
.page-faq .fold__body {
  padding-top: 14px;
  border-top: 1px dashed var(--line);
  font-size: 16px;
  line-height: 1.8;
}

/* ---------- 答案内容 ---------- */
.page-faq .faq-ans {
  margin: 0 0 12px;
}
.page-faq .faq-ans--sub {
  margin: 14px 0 0;
  padding-left: 12px;
  border-left: 2px solid var(--line-cyan);
  font-size: 14px;
  color: var(--muted);
}
.page-faq .faq-ans strong {
  font-weight: 600;
  color: var(--orange);
}
.page-faq .faq-steps {
  display: grid;
  gap: 9px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-faq .faq-steps li {
  display: grid;
  grid-template-columns: 26px minmax(0, 1fr);
  gap: 10px;
  align-items: start;
  font-size: 15px;
  line-height: 1.75;
}
.page-faq .faq-steps__n {
  display: grid;
  place-items: center;
  height: 22px;
  margin-top: 3px;
  border: 1px solid rgba(0, 229, 255, .32);
  border-radius: var(--r-s);
  background: rgba(0, 229, 255, .14);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  color: var(--cyan-soft);
}
.page-faq .faq-steps a,
.page-faq .fold__body a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--line-cyan);
}
.page-faq .faq-steps a:hover,
.page-faq .fold__body a:hover {
  color: var(--cyan-soft);
}
.page-faq .faq-code {
  display: inline-block;
  padding: 1px 7px;
  border: 1px solid rgba(255, 122, 0, .34);
  border-radius: var(--r-s);
  background: rgba(255, 122, 0, .12);
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 500;
  color: var(--orange);
  white-space: nowrap;
}
.page-faq .faq-code[data-anchor] {
  cursor: pointer;
  transition: background .18s var(--ease);
}
.page-faq .faq-code[data-anchor]:hover { background: rgba(255, 122, 0, .24); }

/* ---------- 联系区块 ---------- */
.page-faq .faq-help {
  margin-top: 4px;
  padding: 26px 20px;
  border: 1px solid rgba(0, 229, 255, .26);
  border-radius: var(--r-l);
  background:
    linear-gradient(140deg, rgba(106, 13, 173, .30), transparent 58%),
    var(--panel);
}
.page-faq .faq-help__num {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .14em;
  color: var(--orange-soft);
}
.page-faq .faq-help__title {
  margin: 0 0 12px;
  font-family: var(--font-head);
  font-size: 22px;
  font-weight: 800;
  color: var(--text);
}
.page-faq .faq-help__lead {
  max-width: 44em;
  margin: 0 0 16px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}
.page-faq .faq-help__list {
  display: grid;
  gap: 8px;
  margin: 0 0 22px;
  padding: 0;
  list-style: none;
}
.page-faq .faq-help__list li {
  position: relative;
  padding-left: 20px;
  font-size: 15px;
  line-height: 1.75;
}
.page-faq .faq-help__list li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: .72em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 6px rgba(0, 229, 255, .8);
}
.page-faq .faq-contact {
  display: grid;
  gap: 8px;
  margin-bottom: 14px;
}
.page-faq .faq-contact__line {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
  margin: 0;
}
.page-faq .faq-contact__k {
  min-width: 68px;
  font-size: 13px;
  color: var(--muted);
}
.page-faq .faq-contact__v {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  word-break: break-all;
}
.page-faq .faq-help__note {
  margin: 0 0 20px;
  padding: 10px 12px;
  border-left: 3px solid var(--orange);
  border-radius: 0 var(--r-s) var(--r-s) 0;
  background: rgba(255, 122, 0, .07);
  font-size: 13px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 回到分类索引 ---------- */
.page-faq .faq-return {
  position: fixed;
  right: 14px;
  bottom: calc(var(--bar) + 14px);
  z-index: 40;
  display: inline-flex;
  align-items: center;
  padding: 9px 15px;
  border: 1px solid var(--line-cyan);
  border-radius: 999px;
  background: rgba(20, 20, 28, .92);
  color: var(--cyan-soft);
  font-size: 13px;
  text-decoration: none;
  backdrop-filter: blur(6px);
  transition: border-color .2s var(--ease), color .2s var(--ease);
}
.page-faq .faq-return:hover {
  border-color: var(--cyan);
  color: var(--text);
}
.page-faq .faq-return:focus-visible {
  outline: 2px solid var(--cyan-soft);
  outline-offset: 2px;
}

/* ---------- 桌面端 ---------- */
@media (min-width: 900px) {
  .page-faq .faq-body {
    grid-template-columns: var(--faq-idx-w) minmax(0, 1fr);
    gap: 40px;
    align-items: start;
    padding-top: 34px;
  }
  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--bar) + 18px);
    padding: 10px;
  }
  .page-faq .faq-index__list {
    display: block;
    overflow: visible;
    padding: 0;
  }
  .page-faq .faq-index__list li + li { margin-top: 2px; }
  .page-faq .faq-index__link {
    border-bottom: 0;
    border-left: 3px solid transparent;
    border-radius: 0 var(--r-s) var(--r-s) 0;
    white-space: normal;
  }
  .page-faq .faq-index__link:hover,
  .page-faq .faq-index__link:focus-visible {
    border-bottom-color: transparent;
    border-left-color: var(--cyan);
  }
  .page-faq .faq-group__title { font-size: 24px; }
  .page-faq .faq-return {
    right: 24px;
    bottom: 24px;
  }
}

@media (min-width: 1180px) {
  .page-faq .faq-body { gap: 52px; }
  .page-faq .faq-group { margin-bottom: 54px; }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .fold,
  .page-faq .fold__head,
  .page-faq .fold__sign::before,
  .page-faq .fold__sign::after,
  .page-faq .faq-index__link {
    transition: none;
  }
  .page-faq .fold:hover { transform: none; }
}