.page-faq{
  --faq-index-w:252px;
  --faq-gap:clamp(1.5rem, 3.5vw, 3.5rem);
  --faq-line:var(--line-soft);
  --faq-text-dim:rgba(244,235,221,.8);
  --faq-text-soft:rgba(244,235,221,.62);
  background:
    radial-gradient(88% 58% at 94% -10%, rgba(53,242,208,.13), transparent 62%),
    radial-gradient(64% 46% at -6% 108%, rgba(255,122,26,.08), transparent 60%),
    var(--ink-900);
  color:var(--paper);
  font-family:var(--font-body);
  padding:clamp(1.1rem, 3vw, 2.25rem) 0 clamp(3rem, 6vw, 5.5rem);
}

.page-faq .breadcrumb{
  font-family:var(--font-mono);
  font-size:.75rem;
  letter-spacing:.06em;
  color:var(--faq-text-soft);
  margin-bottom:clamp(.9rem, 2vw, 1.5rem);
}
.page-faq .breadcrumb a{
  color:var(--silver);
  text-decoration:none;
}
.page-faq .breadcrumb a:hover{
  color:var(--cyan);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero{
  display:grid;
  gap:clamp(1.4rem, 3vw, 2.5rem);
  align-items:center;
}
.page-faq .faq-hero__kicker{
  display:inline-flex;
  align-items:center;
  gap:.6rem;
  margin:0 0 1rem;
  font-family:var(--font-mono);
  font-size:.72rem;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--cyan);
}
.page-faq .faq-hero__kicker::before{
  content:"";
  width:32px;
  height:1px;
  background:var(--cyan);
  opacity:.65;
}
.page-faq .faq-hero__title{
  margin:0;
  font-family:var(--font-display);
  font-weight:900;
  font-size:clamp(1.95rem, 5.4vw, 3.9rem);
  line-height:1.06;
  letter-spacing:-.02em;
}
.page-faq .faq-hero__mark{
  color:var(--cyan);
}
.page-faq .faq-hero__lead{
  margin:1.1rem 0 0;
  max-width:54ch;
  font-size:clamp(.96rem, 1.1vw, 1.06rem);
  line-height:1.85;
  color:var(--faq-text-dim);
}
.page-faq .faq-hero__stats{
  display:flex;
  flex-wrap:wrap;
  gap:clamp(.9rem, 3vw, 2.4rem);
  margin:clamp(1.4rem, 3vw, 1.9rem) 0 0;
  padding-top:1.15rem;
  border-top:1px solid var(--line);
}
.page-faq .faq-stat{
  min-width:0;
}
.page-faq .faq-stat__label{
  order:2;
  display:block;
  margin-top:.4rem;
  font-size:.76rem;
  letter-spacing:.08em;
  color:var(--silver);
  white-space:nowrap;
}
.page-faq .faq-stat__num{
  margin:0;
  display:block;
  font-family:var(--font-mono);
  font-size:clamp(1.3rem, 2.6vw, 1.85rem);
  line-height:1;
  color:var(--cyan);
  white-space:nowrap;
}
.page-faq .faq-stat{
  display:flex;
  flex-direction:column;
}

/* ---------- 图片框 ---------- */
.page-faq .faq-figure{
  position:relative;
  z-index:0;
  margin:0;
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:var(--ink-800);
  overflow:hidden;
  box-shadow:var(--shadow-sm);
}
.page-faq .faq-figure img{
  display:block;
  width:100%;
  height:auto;
  max-width:100%;
  aspect-ratio:5 / 3;
  object-fit:cover;
  filter:saturate(.94);
}
.page-faq .faq-figure__cap{
  margin:0;
  padding:.55rem .85rem;
  border-top:1px solid var(--line-soft);
  font-family:var(--font-mono);
  font-size:.7rem;
  letter-spacing:.1em;
  color:var(--silver);
  background:rgba(7,28,23,.55);
}
.page-faq .faq-figure--hero::before{
  content:"";
  display:none;
  position:absolute;
  inset:18px -16px -18px 16px;
  border:1px solid var(--line);
  background:linear-gradient(135deg, rgba(53,242,208,.1), transparent 62%);
  z-index:-1;
}

/* ---------- 主体：索引 + 问答 ---------- */
.page-faq .faq-body{
  display:grid;
  grid-template-columns:minmax(0, 1fr);
  gap:clamp(1.3rem, 3vw, 2.4rem);
  margin-top:clamp(2rem, 5vw, 3.8rem);
}
.page-faq .faq-index{
  border:1px solid var(--faq-line);
  border-radius:var(--radius);
  background:rgba(12,42,34,.62);
  padding:.85rem .9rem;
  min-width:0;
}
.page-faq .faq-index__title{
  display:flex;
  align-items:center;
  gap:.5rem;
  margin:0 0 .7rem;
  font-family:var(--font-mono);
  font-size:.7rem;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--silver);
}
.page-faq .faq-index__title::before{
  content:"";
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--cyan);
  box-shadow:0 0 0 3px rgba(53,242,208,.16);
}
@media (prefers-reduced-motion:no-preference){
  .page-faq .faq-index__title::before{
    animation:faq-pulse 2.8s ease-in-out infinite;
  }
}
@keyframes faq-pulse{
  0%, 100%{ opacity:.4; }
  50%{ opacity:1; }
}
.page-faq .faq-index__list{
  display:flex;
  gap:.45rem;
  margin:0;
  padding:0 0 .35rem;
  list-style:none;
  overflow-x:auto;
  overscroll-behavior-x:contain;
}
.page-faq .faq-index__link{
  display:inline-flex;
  align-items:center;
  gap:.45rem;
  padding:.45rem .65rem;
  border:1px solid transparent;
  border-radius:var(--radius);
  color:var(--faq-text-dim);
  font-size:.85rem;
  line-height:1.4;
  text-decoration:none;
  white-space:nowrap;
  transition:color .18s ease, background .18s ease, border-color .18s ease;
}
.page-faq .faq-index__no{
  font-family:var(--font-mono);
  font-size:.72rem;
  color:var(--steel);
}
.page-faq .faq-index__link:hover{
  color:var(--paper);
  background:rgba(53,242,208,.07);
  border-color:var(--line);
}
.page-faq .faq-index__link[aria-current="true"]{
  color:var(--cyan);
  background:rgba(53,242,208,.1);
  border-color:var(--line-strong);
}
.page-faq .faq-index__link[aria-current="true"] .faq-index__no{
  color:var(--cyan);
}
.page-faq .faq-index__link:focus-visible{
  outline:2px solid var(--cyan);
  outline-offset:2px;
  box-shadow:0 0 0 4px rgba(255,209,102,.22);
}
.page-faq .faq-index__note{
  display:none;
  margin:1rem 0 0;
  padding-top:.9rem;
  border-top:1px solid var(--line-soft);
  font-size:.8rem;
  line-height:1.75;
  color:var(--silver);
}
.page-faq .faq-index__note a{
  color:var(--cyan);
  text-decoration:none;
  word-break:break-all;
}
.page-faq .faq-index__note a:hover{
  text-decoration:underline;
}

/* ---------- 分组与手风琴 ---------- */
.page-faq .faq-flow{
  min-width:0;
}
.page-faq .faq-group{
  scroll-margin-top:1.5rem;
  padding-top:clamp(1rem, 2.2vw, 1.5rem);
  border-top:1px solid var(--line);
}
.page-faq .faq-group + .faq-group{
  margin-top:clamp(2rem, 4vw, 3.2rem);
}
.page-faq .faq-group__head{
  display:flex;
  align-items:baseline;
  gap:.8rem;
  margin-bottom:1rem;
}
.page-faq .faq-group__index{
  font-family:var(--font-serif);
  font-size:clamp(1.5rem, 3.2vw, 2.2rem);
  line-height:1;
  color:rgba(53,242,208,.45);
}
.page-faq .faq-group__title{
  margin:0;
  font-family:var(--font-display);
  font-weight:800;
  font-size:clamp(1.12rem, 2vw, 1.42rem);
  letter-spacing:-.01em;
  color:var(--paper);
}
.page-faq .faq-item{
  border:1px solid var(--faq-line);
  border-radius:var(--radius);
  background:var(--ink-800);
  margin-bottom:.6rem;
  transition:border-color .2s ease, background .2s ease, transform .2s ease;
}
.page-faq .faq-item:hover{
  border-color:var(--line);
  transform:translateY(-1px);
}
.page-faq .faq-item[open]{
  border-color:var(--line-strong);
  background:var(--ink-700);
}
.page-faq .faq-item > summary{
  display:grid;
  grid-template-columns:auto minmax(0, 1fr) auto;
  gap:.7rem;
  align-items:start;
  padding:.95rem 1rem;
  cursor:pointer;
  list-style:none;
}
.page-faq .faq-item > summary::-webkit-details-marker{
  display:none;
}
.page-faq .faq-item > summary::marker{
  content:"";
}
.page-faq .faq-item > summary:focus-visible{
  outline:2px solid var(--cyan);
  outline-offset:2px;
  box-shadow:0 0 0 4px rgba(255,209,102,.22);
  border-radius:var(--radius);
}
.page-faq .faq-item__q{
  padding-top:.28rem;
  font-family:var(--font-mono);
  font-size:.72rem;
  letter-spacing:.06em;
  color:var(--cyan);
}
.page-faq .faq-item__title{
  font-size:clamp(.94rem, 1.35vw, 1rem);
  font-weight:600;
  line-height:1.6;
  color:var(--paper);
  transition:color .18s ease;
}
.page-faq .faq-item[open] .faq-item__title{
  color:var(--cyan);
}
.page-faq .faq-item__sign{
  position:relative;
  width:14px;
  height:14px;
  margin-top:.38rem;
  flex:none;
}
.page-faq .faq-item__sign::before,
.page-faq .faq-item__sign::after{
  content:"";
  position:absolute;
  background:var(--cyan);
  border-radius:1px;
  transition:transform .2s ease, opacity .2s ease;
}
.page-faq .faq-item__sign::before{
  inset:6px 0 auto 0;
  height:2px;
}
.page-faq .faq-item__sign::after{
  inset:0 auto 0 6px;
  width:2px;
}
.page-faq .faq-item[open] .faq-item__sign::after{
  transform:scaleY(0);
  opacity:0;
}
.page-faq .faq-item__body{
  padding:0 1rem 1.05rem;
}
.page-faq .faq-item__body p{
  margin:.1rem 0 0;
  max-width:68ch;
  font-size:.92rem;
  line-height:1.85;
  color:var(--faq-text-dim);
}
.page-faq .faq-item__body p + p{
  margin-top:.6rem;
}
.page-faq .faq-item__body ol{
  margin:.15rem 0 0;
  padding-left:1.15rem;
  max-width:68ch;
  font-size:.92rem;
  line-height:1.85;
  color:var(--faq-text-dim);
}
.page-faq .faq-item__body li + li{
  margin-top:.3rem;
}
.page-faq .faq-item__body a{
  color:var(--cyan);
  text-decoration:none;
  border-bottom:1px solid var(--line-strong);
}
.page-faq .faq-item__body a:hover{
  border-bottom-color:var(--cyan);
}
@media (prefers-reduced-motion:no-preference){
  .page-faq .faq-item[open] .faq-item__body{
    animation:faq-open .24s ease-out;
  }
}
@keyframes faq-open{
  from{ opacity:0; transform:translateY(-4px); }
  to{ opacity:1; transform:none; }
}
@media (prefers-reduced-motion:reduce){
  .page-faq .faq-item,
  .page-faq .faq-item__title,
  .page-faq .faq-item__sign::before,
  .page-faq .faq-item__sign::after{
    transition:none;
  }
}
.page-faq .faq-figure--sync{
  margin:1rem 0 1.1rem;
  max-width:560px;
}

/* ---------- 底部行动条 ---------- */
.page-faq .faq-cta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:1rem;
  margin-top:clamp(2rem, 4vw, 3rem);
  padding:clamp(1.15rem, 3vw, 1.85rem);
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:linear-gradient(120deg, rgba(53,242,208,.1), rgba(255,122,26,.08));
}
.page-faq .faq-cta__text{
  margin:0;
  max-width:46ch;
  font-size:.94rem;
  line-height:1.8;
  color:var(--faq-text-dim);
}
.page-faq .faq-cta__actions{
  display:flex;
  flex-wrap:wrap;
  gap:.7rem;
}

/* ---------- 断点 ---------- */
@media (min-width:680px){
  .page-faq .faq-figure--hero::before{
    display:block;
  }
  .page-faq .faq-item__body{
    padding-left:1.15rem;
    padding-right:2.25rem;
  }
}

@media (min-width:920px){
  .page-faq .faq-hero{
    grid-template-columns:minmax(0, 1.06fr) minmax(0, .94fr);
    gap:clamp(1.6rem, 4vw, 4rem);
  }
  .page-faq .faq-hero__title{
    font-size:clamp(2.4rem, 4.4vw, 3.9rem);
  }
}

@media (min-width:960px){
  .page-faq .faq-body{
    grid-template-columns:var(--faq-index-w) minmax(0, 1fr);
    gap:var(--faq-gap);
    align-items:start;
  }
  .page-faq .faq-index{
    position:sticky;
    top:1.5rem;
    padding:1.1rem 1.05rem 1.25rem;
    background:var(--ink-800);
  }
  .page-faq .faq-index__list{
    flex-direction:column;
    overflow:visible;
    padding-bottom:0;
    gap:2px;
  }
  .page-faq .faq-index__link{
    white-space:normal;
    font-size:.88rem;
    padding:.5rem .6rem;
  }
  .page-faq .faq-index__note{
    display:block;
  }
  .page-faq .faq-item__title{
    font-size:1rem;
  }
}
<<<END>>>