/* ===== 页面骨架 ===== */
.page-faq {
  --faq-measure: 880px;
  --faq-figure: 940px;
  display: block;
  color: var(--white);
  font-family: var(--font-body);
  background:
    radial-gradient(120% 55% at 10% -5%, rgba(157, 92, 255, .12), transparent 62%),
    radial-gradient(90% 45% at 92% 4%, rgba(201, 163, 86, .09), transparent 58%),
    var(--ink-900);
}

.page-faq .faq-hero {
  padding: clamp(22px, 4.5vw, 52px) 0 clamp(26px, 4.5vw, 52px);
}

.page-faq .faq-frame {
  position: relative;
  max-width: var(--faq-figure);
  margin: 0 auto;
  padding: clamp(20px, 3.5vw, 40px);
  border: 1px solid var(--line-soft);
  background: linear-gradient(152deg, rgba(27, 26, 58, .46) 0%, rgba(12, 42, 34, .74) 58%, rgba(6, 18, 14, .88) 100%);
}

.page-faq .faq-frame::before,
.page-faq .faq-frame::after {
  content: "";
  position: absolute;
  width: 18px;
  height: 18px;
  border: 1px solid var(--gold-line);
  pointer-events: none;
}

.page-faq .faq-frame::before {
  top: -1px;
  left: -1px;
  border-right: 0;
  border-bottom: 0;
}

.page-faq .faq-frame::after {
  right: -1px;
  bottom: -1px;
  border-left: 0;
  border-top: 0;
}

/* ===== 面包屑与索引小标 ===== */
.page-faq .faq-frame .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  margin: 0 0 16px;
  color: var(--mist);
  font-size: 13px;
  line-height: 1.6;
}

.page-faq .faq-frame .breadcrumb a {
  color: var(--mist);
  text-decoration: none;
  transition: color .2s ease;
}

.page-faq .faq-frame .breadcrumb a:hover {
  color: var(--gold-hi);
}

.page-faq .faq-frame .breadcrumb .mono {
  color: var(--line-mid);
}

.page-faq .faq-frame .breadcrumb [aria-current="page"] {
  color: var(--white);
}

.page-faq .faq-frame .eyebrow {
  display: block;
  margin: 0 0 14px;
  color: var(--gold-line);
  font-size: 11px;
  letter-spacing: .16em;
}

.page-faq .faq-hero__title {
  margin: 0 0 16px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(26px, 5vw, 42px);
  line-height: 1.3;
  letter-spacing: .01em;
  text-shadow: var(--glow-neon);
}

.page-faq .faq-hero__lead {
  max-width: 34em;
  margin: 0 0 24px;
  color: rgba(233, 242, 237, .86);
  font-size: 15px;
  line-height: 1.85;
}

/* ===== 首屏数据条 ===== */
.page-faq .faq-hero__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 0;
  border: 1px solid var(--line-soft);
  background: var(--line-soft);
}

.page-faq .faq-stat {
  padding: 13px 15px;
  background: rgba(6, 18, 14, .76);
}

.page-faq .faq-stat dt {
  margin: 0 0 6px;
  color: var(--mist);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
}

.page-faq .faq-stat dd {
  margin: 0;
  color: var(--gold-hi);
  font-family: var(--font-mono);
  font-size: 19px;
  font-variant-numeric: tabular-nums;
  letter-spacing: .02em;
}

/* ===== 首屏配图 ===== */
.page-faq .faq-hero__visual {
  max-width: var(--faq-figure);
  margin: 26px auto 0;
}

.page-faq .media-frame {
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line-soft);
  background: var(--ink-800);
}

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

.page-faq .media-frame__cap {
  display: block;
  padding: 10px 14px;
  border-top: 1px solid var(--line-soft);
  color: var(--mist);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
}

/* ===== 分组跳转条 ===== */
.page-faq .faq-jump {
  position: sticky;
  top: var(--header-h-compact);
  z-index: 20;
  background: rgba(6, 18, 14, .94);
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-jump__list {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 9px 0;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

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

.page-faq .faq-jump__list li {
  flex: 0 0 auto;
}

.page-faq .faq-jump__list a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border: 1px solid transparent;
  color: var(--mist);
  font-size: 14px;
  line-height: 1;
  text-decoration: none;
  transition: color .2s ease, border-color .2s ease, background .2s ease;
}

.page-faq .faq-jump__list a:hover,
.page-faq .faq-jump__list a:focus-visible {
  color: var(--white);
  border-color: var(--line-mid);
  background: rgba(18, 70, 58, .52);
  outline: none;
}

.page-faq .faq-jump__list .mono {
  color: var(--gold-line);
  font-size: 11px;
  letter-spacing: .14em;
}

/* ===== 内容窄栏 ===== */
.page-faq .faq-col {
  width: 100%;
  max-width: var(--faq-measure);
  margin: 0 auto;
  padding: clamp(28px, 5vw, 56px) 0 clamp(24px, 4vw, 44px);
}

.page-faq .faq-group {
  margin: 0 0 clamp(28px, 4.5vw, 48px);
  padding: 0 0 clamp(28px, 4.5vw, 48px);
  border-bottom: 1px solid var(--line-soft);
  scroll-margin-top: calc(var(--header-h-compact) + 72px);
}

.page-faq .faq-group:last-child {
  margin-bottom: 0;
  padding-bottom: 0;
  border-bottom: 0;
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
  margin: 0 0 20px;
}

.page-faq .faq-group__num {
  font-family: var(--font-mono);
  font-size: 20px;
  line-height: 1;
  letter-spacing: .12em;
  color: var(--gold-line);
  transition: color .3s ease, text-shadow .3s ease;
}

.page-faq .faq-group:target .faq-group__num {
  color: var(--orange);
  text-shadow: 0 0 14px rgba(255, 138, 61, .5);
}

.page-faq .faq-group__title {
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 20px;
  line-height: 1.4;
  letter-spacing: .01em;
  text-shadow: var(--glow-neon);
}

.page-faq .faq-group__note {
  max-width: 32em;
  margin: 0;
  color: var(--mist);
  font-size: 14px;
  line-height: 1.8;
}

.page-faq .faq-group__figure {
  margin: 0 0 22px;
}

/* ===== 问答展开组 ===== */
.page-faq .qa {
  border-bottom: 1px solid rgba(201, 163, 86, .14);
}

.page-faq .qa:last-of-type {
  border-bottom: 0;
}

.page-faq .qa__q {
  position: relative;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 12px;
  align-items: start;
  padding: 18px 0 18px 18px;
  cursor: pointer;
  list-style: none;
  color: var(--mist);
  font-size: 16px;
  line-height: 1.6;
  transition: color .24s ease;
}

.page-faq .qa__q::-webkit-details-marker {
  display: none;
}

.page-faq .qa__q::marker {
  content: "";
}

.page-faq .qa__q::before {
  content: "";
  position: absolute;
  left: 0;
  top: 20px;
  bottom: 20px;
  width: 2px;
  background: rgba(126, 154, 144, .3);
  transition: background .24s ease, box-shadow .24s ease;
}

.page-faq .qa__q:hover {
  color: var(--white);
}

.page-faq .qa__q:focus-visible {
  outline: 1px solid var(--orange);
  outline-offset: 2px;
}

.page-faq .qa[open] .qa__q {
  color: var(--white);
  font-weight: 700;
}

.page-faq .qa[open] .qa__q::before {
  background: var(--orange);
  box-shadow: 0 0 14px rgba(255, 138, 61, .55);
}

.page-faq .qa__idx {
  display: none;
  width: 34px;
  color: var(--gold-line);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  line-height: 1.9;
  transition: color .24s ease;
}

.page-faq .qa[open] .qa__idx {
  color: var(--orange);
}

.page-faq .qa__text {
  min-width: 0;
}

.page-faq .qa__toggle {
  position: relative;
  width: 14px;
  height: 14px;
  margin-top: 5px;
}

.page-faq .qa__toggle::before,
.page-faq .qa__toggle::after {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  width: 14px;
  height: 1.5px;
  background: var(--gold-line);
  transition: transform .24s ease, opacity .24s ease, background .24s ease;
}

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

.page-faq .qa[open] .qa__toggle::before {
  background: var(--orange);
}

.page-faq .qa[open] .qa__toggle::after {
  transform: rotate(0deg);
  opacity: 0;
}

.page-faq .qa__a {
  padding: 0 0 20px 18px;
  animation: faqAnswer .24s ease both;
}

.page-faq .qa__a p {
  max-width: 34em;
  margin: 0;
  color: rgba(233, 242, 237, .88);
  font-size: 15px;
  line-height: 1.85;
}

.page-faq .qa__a a {
  color: var(--gold-hi);
  text-decoration: underline;
  text-decoration-color: var(--line-mid);
  text-underline-offset: 3px;
  transition: color .2s ease, text-decoration-color .2s ease;
}

.page-faq .qa__a a:hover {
  color: var(--orange);
  text-decoration-color: var(--orange);
}

.page-faq .faq-num {
  color: var(--gold-hi);
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: .95em;
}

@keyframes faqAnswer {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ===== 收尾引导 ===== */
.page-faq .faq-outro {
  padding: 0 0 clamp(32px, 5vw, 64px);
}

.page-faq .faq-outro__panel {
  max-width: var(--faq-measure);
  margin: 0 auto;
  padding: clamp(24px, 4vw, 40px);
  border: 1px solid var(--line-soft);
  background: linear-gradient(140deg, rgba(27, 26, 58, .5) 0%, rgba(12, 42, 34, .8) 60%, rgba(6, 18, 14, .9) 100%);
}

.page-faq .faq-outro__panel .eyebrow {
  display: block;
  margin: 0 0 12px;
  color: var(--gold-line);
  font-size: 11px;
  letter-spacing: .16em;
}

.page-faq .faq-outro__title {
  margin: 0 0 12px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 20px;
  line-height: 1.4;
  letter-spacing: .01em;
  text-shadow: var(--glow-neon);
}

.page-faq .faq-outro__text {
  max-width: 34em;
  margin: 0;
  color: rgba(233, 242, 237, .86);
  font-size: 15px;
  line-height: 1.85;
}

.page-faq .faq-outro__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

/* ===== 桌面端 ===== */
@media (min-width: 720px) {
  .page-faq .faq-hero__lead {
    font-size: 16px;
  }

  .page-faq .faq-hero__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .faq-stat dd {
    font-size: 21px;
  }

  .page-faq .faq-group__head {
    grid-template-columns: 72px 1fr;
    gap: 20px;
    margin-bottom: 26px;
  }

  .page-faq .faq-group__num {
    font-size: 30px;
    padding-top: 2px;
  }

  .page-faq .faq-group__title {
    font-size: 24px;
  }

  .page-faq .faq-group__note {
    font-size: 15px;
  }

  .page-faq .qa__q {
    grid-template-columns: 34px 1fr auto;
    padding: 20px 0 20px 18px;
  }

  .page-faq .qa__idx {
    display: block;
  }

  .page-faq .qa__a {
    padding: 0 40px 22px 64px;
  }

  .page-faq .qa__a p {
    font-size: 16px;
  }

  .page-faq .faq-outro__title {
    font-size: 24px;
  }
}

@media (min-width: 1080px) {
  .page-faq .faq-jump__list {
    gap: 16px;
  }

  .page-faq .faq-jump__list a {
    padding: 9px 16px;
  }
}

/* ===== 动效降级 ===== */
@media (prefers-reduced-motion: reduce) {
  .page-faq .qa__a {
    animation: none;
  }

  .page-faq .qa__q,
  .page-faq .qa__q::before,
  .page-faq .qa__idx,
  .page-faq .qa__toggle::before,
  .page-faq .qa__toggle::after,
  .page-faq .faq-group__num {
    transition: none;
  }
}