.page-faq {
  --faq-surface: rgba(14, 19, 48, .62);
  --faq-surface-2: rgba(27, 35, 80, .5);
  --faq-lime-soft: rgba(198, 255, 61, .34);
  color: var(--white);
  font-family: var(--sans);
  background: var(--ink-0);
}

.page-faq .faq-shell {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 20px var(--pad) 130px;
}

/* ---------- 面包屑 ---------- */
.page-faq .faq-crumbs {
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--muted);
  margin-bottom: 18px;
}

.page-faq .faq-crumbs a {
  color: var(--muted);
  text-decoration: none;
}

.page-faq .faq-crumbs a:hover {
  color: var(--cyan);
}

.page-faq .faq-crumbs .crumbs__sep {
  margin: 0 8px;
  color: var(--line);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: 30px 20px 0;
  background: var(--grad);
  border: 1px solid var(--line);
  overflow: hidden;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  right: -60px;
  top: -60px;
  width: 220px;
  height: 220px;
  background: radial-gradient(circle, rgba(198, 255, 61, .16) 0%, rgba(198, 255, 61, 0) 68%);
  pointer-events: none;
}

.page-faq .faq-hero .eyebrow {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .22em;
  color: var(--lime);
  margin: 0 0 14px;
}

.page-faq .faq-hero h1 {
  margin: 0;
  font-size: clamp(30px, 7vw, 62px);
  font-weight: 800;
  line-height: 1.03;
  letter-spacing: -.02em;
  color: var(--white);
  max-width: 18ch;
}

.page-faq .faq-hero__lead {
  margin: 18px 0 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .faq-hero__stats {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid var(--line);
}

.page-faq .faq-hero__stats li {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px 10px 16px 0;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-hero__stats li:nth-child(odd) {
  border-right: 1px solid var(--line);
}

.page-faq .faq-hero__stats li:nth-child(even) {
  padding-left: 14px;
}

.page-faq .faq-hero__stats .num {
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
  font-size: 22px;
  font-weight: 700;
  color: var(--lime);
  letter-spacing: -.01em;
}

.page-faq .faq-hero__stats em {
  font-style: normal;
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--muted);
}

/* ---------- 两栏骨架 ---------- */
.page-faq .faq-layout {
  display: grid;
  gap: 26px;
  margin-top: 34px;
}

/* ---------- 问题索引 ---------- */
.page-faq .faq-index {
  border: 1px solid var(--line);
  background: var(--faq-surface);
}

.page-faq .faq-index__toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 16px;
  cursor: pointer;
  list-style: none;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--white);
}

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

.page-faq .faq-index__toggle-count {
  color: var(--muted);
}

.page-faq .faq-index[open] .faq-index__toggle {
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 8px 0 14px;
  border-left: 1px solid var(--line);
  margin-left: 16px;
}

.page-faq .faq-index__list li {
  margin: 0;
}

.page-faq .faq-index__list a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 14px;
  margin-left: -1px;
  border-left: 2px solid transparent;
  color: var(--muted);
  text-decoration: none;
  font-size: 14px;
  line-height: 1.5;
  transition: color .2s var(--ease), border-color .2s var(--ease), background-color .2s var(--ease);
}

.page-faq .faq-index__list a:hover,
.page-faq .faq-index__list a:focus-visible {
  color: var(--white);
  border-left-color: var(--lime);
  background: rgba(198, 255, 61, .06);
}

.page-faq .faq-index__num {
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--line);
  transition: color .2s var(--ease);
}

.page-faq .faq-index__list a:hover .faq-index__num,
.page-faq .faq-index__list a:focus-visible .faq-index__num {
  color: var(--lime);
}

/* ---------- 问答流 ---------- */
.page-faq .faq-flow {
  display: grid;
  gap: 40px;
  min-width: 0;
}

.page-faq .faq-block {
  min-width: 0;
  scroll-margin-top: 96px;
}

.page-faq .faq-block__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-block__num {
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
  font-size: 13px;
  letter-spacing: .16em;
  color: var(--lime);
}

.page-faq .faq-block__head h2 {
  margin: 0;
  font-size: clamp(20px, 4.4vw, 26px);
  font-weight: 700;
  letter-spacing: -.01em;
  color: var(--white);
}

.page-faq .faq-block__body {
  display: grid;
  gap: 20px;
  margin-top: 18px;
  min-width: 0;
}

.page-faq .faq-list {
  display: grid;
  gap: 10px;
  min-width: 0;
}

/* ---------- 单条问答（原生 details） ---------- */
.page-faq .qa {
  border: 1px solid var(--line);
  background: var(--faq-surface);
  transition: background-color .2s var(--ease), border-color .2s var(--ease);
}

.page-faq .qa[open] {
  background: var(--ink-1);
  border-color: var(--faq-lime-soft);
}

.page-faq .qa__q {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 15px 16px;
  margin: 0;
  cursor: pointer;
  list-style: none;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--white);
}

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

.page-faq .qa__q::after {
  content: "+";
  margin-left: auto;
  flex: none;
  font-family: var(--mono);
  font-size: 17px;
  line-height: 1;
  color: var(--lime);
  transform: translateY(3px);
}

.page-faq .qa[open] .qa__q::after {
  content: "–";
  color: var(--muted);
}

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

.page-faq .qa__a {
  padding: 2px 16px 16px;
  border-top: 1px solid var(--line);
}

.page-faq .qa__a p {
  margin: 14px 0 0;
  max-width: 68ch;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--white);
}

.page-faq .qa__next {
  display: flex;
  margin-top: 16px !important;
}

.page-faq .qa__next a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 12px;
  border: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: .08em;
  color: var(--cyan);
  text-decoration: none;
  transition: border-color .2s var(--ease), color .2s var(--ease), background-color .2s var(--ease);
}

.page-faq .qa__next a:hover,
.page-faq .qa__next a:focus-visible {
  border-color: var(--cyan);
  color: var(--white);
  background: rgba(127, 231, 255, .08);
}

.page-faq .qa__next a span {
  transition: transform .2s var(--ease);
}

.page-faq .qa__next a:hover span {
  transform: translateX(4px);
}

/* ---------- 配图 ---------- */
.page-faq .faq-figure {
  margin: 0;
  border: 1px solid var(--line);
  background: var(--faq-surface-2);
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-figure figcaption {
  padding: 11px 14px 13px;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--muted);
  border-left: 2px solid var(--lime);
}

/* ---------- 联系块 ---------- */
.page-faq .faq-contact {
  margin-top: 56px;
  padding: 26px 20px 28px;
  border: 1px solid var(--line);
  background: var(--grad);
  scroll-margin-top: 96px;
}

.page-faq .faq-contact__title {
  margin: 0;
  font-size: clamp(20px, 4.4vw, 26px);
  font-weight: 700;
  letter-spacing: -.01em;
  color: var(--white);
}

.page-faq .faq-contact__lead {
  margin: 12px 0 0;
  max-width: 64ch;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .faq-contact__list {
  margin-top: 20px;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-faq .faq-contact__list .contact-item {
  background: var(--ink-1);
  padding: 14px 16px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 14px;
}

.page-faq .faq-contact__list .contact-item__key {
  flex: none;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: .14em;
  color: var(--muted);
  min-width: 72px;
}

.page-faq .faq-contact__list .contact-item__val {
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
  font-size: 14px;
  color: var(--lime);
  word-break: break-all;
}

.page-faq .faq-contact .copy-btn {
  margin-left: auto;
  padding: 6px 11px;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .1em;
  cursor: pointer;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.page-faq .faq-contact .copy-btn:hover {
  color: var(--cyan);
  border-color: var(--cyan);
}

.page-faq .faq-contact .copy-btn[data-copy-state="copied"] {
  color: var(--lime);
  border-color: var(--lime);
}

.page-faq .faq-contact__more {
  margin: 18px 0 0;
  font-size: 14px;
}

.page-faq .faq-contact__more a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(127, 231, 255, .35);
}

.page-faq .faq-contact__more a:hover {
  color: var(--white);
  border-bottom-color: var(--white);
}

/* ---------- 固定双按钮 ---------- */
.page-faq .faq-dock {
  position: fixed;
  right: 14px;
  bottom: 14px;
  z-index: 40;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.page-faq .faq-dock__btn {
  display: block;
  padding: 9px 13px;
  border: 1px solid var(--line);
  background: rgba(14, 19, 48, .94);
  color: var(--muted);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .1em;
  text-decoration: none;
  text-align: center;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

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

.page-faq .faq-dock__btn--top {
  color: var(--white);
}

/* ---------- 平板 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-shell {
    padding-top: 26px;
  }

  .page-faq .faq-hero {
    padding: 44px 32px 0;
  }

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

  .page-faq .faq-hero__stats li {
    border-bottom: 0;
    padding: 16px 16px 18px;
  }

  .page-faq .faq-hero__stats li:nth-child(odd) {
    border-right: 1px solid var(--line);
  }

  .page-faq .faq-hero__stats li:nth-child(even) {
    padding-left: 16px;
  }

  .page-faq .qa__q {
    font-size: 16px;
    padding: 17px 20px;
  }

  .page-faq .qa__a {
    padding: 0 20px 20px;
    margin-left: 30px;
    border-top: 0;
    border-left: 1px solid var(--line);
    padding-left: 22px;
  }

  .page-faq .faq-contact {
    padding: 32px 32px 34px;
  }

  .page-faq .faq-dock {
    right: 22px;
    bottom: 22px;
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 1000px) {
  .page-faq .faq-layout {
    grid-template-columns: 236px minmax(0, 1fr);
    gap: 52px;
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 92px;
  }

  .page-faq .faq-block--split .faq-block__body {
    grid-template-columns: minmax(0, 1.45fr) minmax(0, 1fr);
    gap: 26px;
    align-items: start;
  }

  .page-faq .faq-flow {
    gap: 48px;
  }

  .page-faq .faq-contact__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq *,
  .page-faq *::before,
  .page-faq *::after {
    transition-duration: .01ms !important;
    animation-duration: .01ms !important;
  }

  .page-faq .qa__next a:hover span {
    transform: none;
  }
}