.page-faq {
  --faq-pin-line: rgba(53, 230, 214, .55);
  --faq-card: rgba(26, 18, 51, .72);
  display: block;
  padding-bottom: clamp(56px, 8vw, 108px);
}

/* ---------- 面包屑 ---------- */
.page-faq .breadcrumb {
  padding-top: 18px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(26px, 4.5vw, 58px) 0 clamp(26px, 4vw, 46px);
  border-bottom: 1px solid var(--line);
  background:
    linear-gradient(180deg, rgba(59, 123, 255, .10), rgba(7, 7, 15, 0) 66%),
    radial-gradient(115% 100% at 10% 0%, rgba(53, 230, 214, .11), transparent 58%),
    var(--ink);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: .18;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 88px 88px;
  -webkit-mask-image: linear-gradient(180deg, #000 0%, transparent 88%);
  mask-image: linear-gradient(180deg, #000 0%, transparent 88%);
}

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

.page-faq .faq-hero h1 {
  margin: 14px 0 0;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(2rem, 5.6vw, 4.2rem);
  line-height: 1.02;
  letter-spacing: -.02em;
  color: var(--text);
}

.page-faq .faq-hero h1 em {
  display: block;
  font-style: normal;
  color: var(--cyan);
  text-shadow: 0 0 34px rgba(53, 230, 214, .28);
}

.page-faq .faq-hero__lede {
  margin: clamp(16px, 2.4vw, 24px) 0 0;
  max-width: 62ch;
  color: var(--muted);
  font-size: clamp(.95rem, 1.1vw, 1.06rem);
  line-height: 1.78;
}

/* ---------- 搜索框 ---------- */
.page-faq .faq-search {
  margin-top: clamp(20px, 3vw, 32px);
  display: flex;
  align-items: center;
  gap: 10px;
  max-width: 540px;
  padding: 10px 14px;
  border: 1px solid var(--line);
  background: var(--faq-card);
  transition: border-color .22s var(--ease), box-shadow .22s var(--ease);
}

.page-faq .faq-search:focus-within {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(53, 230, 214, .14);
}

.page-faq .faq-search__icon {
  flex: none;
  color: var(--cyan);
  font-size: 1.05rem;
}

.page-faq .faq-search__sr {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

.page-faq .faq-search input {
  flex: 1 1 auto;
  min-width: 0;
  padding: 4px 0;
  border: 0;
  background: transparent;
  color: var(--text);
  font-family: var(--font-body);
  font-size: .95rem;
  -webkit-appearance: none;
  appearance: none;
}

.page-faq .faq-search input:focus {
  outline: none;
}

.page-faq .faq-search input::placeholder {
  color: var(--muted);
}

.page-faq .faq-search__hint {
  flex: none;
  padding: 1px 6px;
  border: 1px solid var(--line);
  color: var(--muted);
  font-size: .72rem;
}

/* ---------- 布局 ---------- */
.page-faq .faq-layout {
  display: block;
  padding-top: clamp(28px, 4vw, 48px);
}

.page-faq .faq-toc {
  margin-bottom: 30px;
}

@media (min-width: 900px) {
  .page-faq .faq-layout {
    display: grid;
    grid-template-columns: 236px minmax(0, 1fr);
    gap: clamp(28px, 4vw, 56px);
    align-items: start;
  }

  .page-faq .faq-toc {
    margin-bottom: 0;
  }

  .page-faq .faq-body > .faq-sec:first-child {
    padding-top: 0;
  }
}

/* ---------- 锚点目录 ---------- */
.page-faq .faq-toc__head {
  margin: 0 0 14px;
}

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

.page-faq .faq-toc__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border: 1px solid var(--line);
  background: rgba(7, 7, 15, .55);
  color: var(--text);
  font-size: .88rem;
  text-decoration: none;
  transition: border-color .2s var(--ease), color .2s var(--ease), background .2s var(--ease);
}

.page-faq .faq-toc__link:hover {
  border-color: var(--blue);
  color: var(--cyan);
}

.page-faq .faq-toc__num {
  font-size: .72rem;
  color: var(--muted);
}

.page-faq .faq-toc__link[aria-current="true"] {
  border-color: var(--faq-pin-line);
  background: rgba(53, 230, 214, .08);
  color: var(--cyan);
}

.page-faq .faq-toc__link[aria-current="true"] .faq-toc__num {
  color: var(--cyan);
}

.page-faq .faq-toc__link--pin {
  border-color: var(--faq-pin-line);
  background: rgba(53, 230, 214, .07);
  color: var(--cyan);
  box-shadow: inset 0 0 0 1px rgba(53, 230, 214, .12);
}

.page-faq .faq-toc__link--pin .faq-toc__num {
  color: var(--cyan);
}

.page-faq .faq-toc__badge {
  padding: 1px 6px;
  border: 1px solid var(--faq-pin-line);
  background: rgba(53, 230, 214, .1);
  color: var(--cyan);
  font-size: .66rem;
  letter-spacing: .04em;
}

.page-faq .faq-toc__note {
  margin: 16px 0 0;
  color: var(--muted);
  font-size: .82rem;
  line-height: 1.7;
}

@media (min-width: 900px) {
  .page-faq .faq-toc {
    position: sticky;
    top: calc(var(--rail-top) + 22px);
    padding-top: 16px;
    border-top: 1px solid var(--line);
  }

  .page-faq .faq-toc__list {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 2px;
  }

  .page-faq .faq-toc__link {
    width: 100%;
    padding: 9px 10px;
    border: 0;
    border-left: 2px solid transparent;
    background: transparent;
    justify-content: flex-start;
  }

  .page-faq .faq-toc__link:hover {
    border-left-color: var(--blue);
    background: rgba(59, 123, 255, .08);
  }

  .page-faq .faq-toc__link[aria-current="true"] {
    border-left-color: var(--cyan);
    background: rgba(53, 230, 214, .07);
  }

  .page-faq .faq-toc__link--pin {
    border-left-color: var(--cyan);
    background: rgba(53, 230, 214, .06);
    box-shadow: none;
  }

  .page-faq .faq-toc__badge {
    margin-left: auto;
  }
}

/* ---------- 板块 ---------- */
.page-faq .faq-sec {
  padding-top: clamp(34px, 5vw, 64px);
  scroll-margin-top: calc(var(--rail-top) + 26px);
}

.page-faq .faq-sec__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 16px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-sec__num {
  flex: none;
  color: var(--cyan);
  font-size: 1.05rem;
  letter-spacing: .06em;
}

.page-faq .faq-sec__head h2 {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(1.5rem, 3vw, 2.15rem);
  line-height: 1.1;
  letter-spacing: -.02em;
  color: var(--text);
}

.page-faq .faq-sec__lede {
  margin: 0 0 16px;
  max-width: 66ch;
  color: var(--muted);
  font-size: .95rem;
  line-height: 1.78;
}

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

.page-faq .qa__q {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) 18px;
  gap: 12px;
  align-items: start;
  padding: 16px 2px;
  color: var(--text);
  font-size: 1rem;
  font-weight: 500;
  line-height: 1.55;
  cursor: pointer;
  list-style: none;
  transition: color .2s var(--ease);
}

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

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

.page-faq .qa__mark {
  padding-top: 5px;
  color: var(--muted);
  font-size: .74rem;
  letter-spacing: .04em;
}

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

.page-faq .qa__sign {
  position: relative;
  width: 16px;
  height: 16px;
  margin-top: 5px;
}

.page-faq .qa__sign::before,
.page-faq .qa__sign::after {
  content: "";
  position: absolute;
  background: var(--cyan);
  transition: transform .24s var(--ease), opacity .24s var(--ease);
}

.page-faq .qa__sign::before {
  top: 7px;
  left: 0;
  width: 16px;
  height: 2px;
}

.page-faq .qa__sign::after {
  top: 0;
  left: 7px;
  width: 2px;
  height: 16px;
}

.page-faq .qa[open] .qa__sign::after {
  transform: scaleY(0);
  opacity: 0;
}

.page-faq .qa__a {
  padding: 0 26px 18px 34px;
  color: var(--muted);
  font-size: .93rem;
  line-height: 1.78;
}

.page-faq .qa__a p {
  margin: 0;
}

.page-faq .qa__a p + p {
  margin-top: 10px;
}

/* ---------- 第 4 项导出板块 ---------- */
.page-faq .faq-sec--export {
  position: relative;
  margin-top: clamp(34px, 5vw, 64px);
  padding: clamp(24px, 3.6vw, 44px) clamp(18px, 3vw, 40px);
  border: 1px solid var(--line);
  background: linear-gradient(155deg, rgba(50, 36, 96, .92), rgba(26, 18, 51, .96) 62%);
  box-shadow: var(--shadow-soft);
}

.page-faq .faq-sec--export::before {
  content: "";
  position: absolute;
  left: -1px;
  top: -1px;
  bottom: -1px;
  width: 3px;
  background: linear-gradient(180deg, var(--cyan), var(--blue));
}

.page-faq .faq-sec--export .faq-sec__head {
  border-bottom-color: rgba(236, 236, 244, .14);
}

.page-faq .faq-sec--export .qa {
  border-bottom-color: rgba(236, 236, 244, .12);
}

.page-faq .export-steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin: 22px 0 26px;
  border: 1px solid var(--line);
  background: var(--line);
}

.page-faq .export-step {
  padding: 18px 16px 20px;
  background: rgba(7, 7, 15, .87);
}

.page-faq .export-step__no {
  display: block;
  margin-bottom: 12px;
  color: var(--cyan);
  font-size: 1.5rem;
  line-height: 1;
}

.page-faq .export-step__t {
  margin: 0 0 8px;
  font-family: var(--font-body);
  font-size: .96rem;
  font-weight: 700;
  letter-spacing: .01em;
  color: var(--text);
}

.page-faq .export-step__d {
  margin: 0;
  color: var(--muted);
  font-size: .84rem;
  line-height: 1.72;
}

@media (min-width: 620px) {
  .page-faq .export-steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1180px) {
  .page-faq .export-steps {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

/* ---------- 配图 ---------- */
.page-faq .faq-figure {
  position: relative;
  overflow: hidden;
  margin: 24px 0 0;
  border: 1px solid var(--line);
  background: var(--ink);
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  transition: transform .32s var(--ease);
}

.page-faq .faq-figure:hover img {
  transform: scale(1.02);
}

.page-faq .faq-figure__cap {
  position: absolute;
  left: 0;
  bottom: 0;
  padding: 6px 10px;
  border-top: 1px solid var(--line);
  border-right: 1px solid var(--line);
  background: rgba(7, 7, 15, .84);
  color: var(--muted);
  font-size: .72rem;
  letter-spacing: .02em;
}

/* ---------- 底部动作 ---------- */
.page-faq .faq-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 26px 0 0;
}

/* ---------- 焦点可见 ---------- */
.page-faq a:focus-visible,
.page-faq summary:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 2px;
  box-shadow: 0 0 0 4px rgba(53, 230, 214, .18);
}

/* ---------- 窄屏 ---------- */
@media (max-width: 600px) {
  .page-faq .qa__a {
    padding-left: 0;
    padding-right: 6px;
  }

  .page-faq .faq-cta .btn {
    flex: 1 1 auto;
    text-align: center;
  }
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq *,
  .page-faq *::before,
  .page-faq *::after {
    transition-duration: .001ms !important;
    animation-duration: .001ms !important;
  }
}