.page-faq{
  --faq-card:#1B2A38;
  --faq-step-bg:rgba(11,15,18,.55);
  background:
    radial-gradient(1100px 520px at 88% -8%, rgba(51,224,210,.10), transparent 62%),
    linear-gradient(180deg,#0B0F12 0%,#101A24 46%,#0B0F12 100%);
  color:var(--text);
  font-family:var(--font-body);
  padding-bottom:clamp(40px,7vw,80px);
}
.page-faq :focus-visible{
  outline:2px solid var(--cyan);
  outline-offset:3px;
  border-radius:2px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero{
  position:relative;
  overflow:hidden;
  padding:clamp(20px,4vw,38px) 0 clamp(28px,5vw,56px);
  border-bottom:1px solid var(--line);
}
.page-faq .faq-hero::before{
  content:"";
  position:absolute;
  top:-130px;
  right:-90px;
  width:min(560px,82vw);
  height:min(560px,82vw);
  background:conic-gradient(from 200deg, rgba(51,224,210,.15), rgba(255,106,42,.09), transparent 60%);
  transform:rotate(-12deg);
  filter:blur(4px);
  pointer-events:none;
}
.page-faq .faq-hero .lj-shell{position:relative;z-index:1;}
.page-faq .faq-crumbs{
  font-family:var(--font-mono);
  font-size:12.5px;
  color:var(--text-mute);
  margin-bottom:clamp(16px,3vw,26px);
}
.page-faq .faq-crumbs a{
  color:var(--text-mute);
  text-decoration:none;
  border-bottom:1px solid transparent;
  transition:color .18s ease,border-color .18s ease;
}
.page-faq .faq-crumbs a:hover{color:var(--cyan);border-bottom-color:var(--cyan);}
.page-faq .lj-crumbs__sep{margin:0 8px;color:var(--line-mid);}

.page-faq .faq-hero__grid{display:grid;gap:clamp(22px,4vw,40px);}
.page-faq .faq-hero__eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  margin:0;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.14em;
  color:var(--cyan);
}
.page-faq .faq-hero__dot{
  width:6px;height:6px;border-radius:50%;
  background:var(--cyan);
  box-shadow:0 0 0 3px rgba(51,224,210,.16);
}
.page-faq .faq-hero__title{
  margin:.45em 0 0;
  font-family:var(--font-display);
  font-weight:800;
  font-size:clamp(32px,6.2vw,66px);
  line-height:1.04;
  letter-spacing:-.01em;
  color:var(--bone);
}
.page-faq .faq-hero__title em{font-style:normal;color:var(--cyan);}
.page-faq .faq-hero__lede{
  max-width:62ch;
  margin:clamp(14px,2.4vw,22px) 0 0;
  font-size:clamp(14.5px,1.5vw,16.5px);
  line-height:1.85;
  color:var(--text-soft);
}
.page-faq .faq-hero__meta{
  display:flex;
  flex-wrap:wrap;
  gap:10px 24px;
  margin-top:clamp(16px,3vw,26px);
  padding-top:16px;
  border-top:1px solid var(--line);
  font-family:var(--font-mono);
  font-size:12.5px;
  color:var(--text-mute);
}
.page-faq .faq-hero__meta b{color:var(--yellow);font-weight:600;}

.page-faq .faq-hero__figure{
  margin:0;
  position:relative;
  border:1px solid var(--line-cyan);
  border-radius:var(--radius);
  overflow:hidden;
  background:var(--faq-card);
  box-shadow:0 1px 0 rgba(255,255,255,.03), 0 18px 40px -30px rgba(0,0,0,.9);
}
.page-faq .faq-hero__figure::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(205deg, rgba(51,224,210,.12), transparent 55%);
  pointer-events:none;
}
.page-faq .faq-hero__figure img{
  display:block;
  width:100%;
  height:auto;
  max-width:100%;
  object-fit:cover;
}

/* ---------- 现象分类 ---------- */
.page-faq .faq-picker{
  padding:clamp(24px,4vw,42px) 0;
  border-bottom:1px solid var(--line);
  background:linear-gradient(180deg, rgba(27,42,56,.32), transparent);
}
.page-faq .faq-picker__title{
  margin:0 0 16px;
  font-family:var(--font-display);
  font-size:clamp(18px,2.4vw,24px);
  color:var(--bone);
  letter-spacing:.01em;
}
.page-faq .faq-chips{
  list-style:none;
  margin:0;
  padding:0;
  display:flex;
  flex-wrap:wrap;
  gap:8px;
}
.page-faq .faq-chip{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:9px 14px;
  border:1px solid var(--line-mid);
  border-radius:var(--radius);
  font-size:13.5px;
  color:var(--text-soft);
  text-decoration:none;
  transition:border-color .18s ease,color .18s ease,background .18s ease,transform .18s ease;
}
.page-faq .faq-chip:hover,
.page-faq .faq-chip:focus-visible{
  border-color:var(--cyan);
  color:var(--bone);
  background:rgba(51,224,210,.08);
  transform:translateY(-2px);
}
.page-faq .faq-chip__k{
  font-family:var(--font-mono);
  font-size:11px;
  color:var(--cyan-dim);
}
.page-faq .faq-picker__hint{
  max-width:70ch;
  margin:14px 0 0;
  font-size:13px;
  line-height:1.75;
  color:var(--text-mute);
}

/* ---------- 章节通用 ---------- */
.page-faq .faq-sec{
  padding:clamp(30px,5vw,62px) 0;
  border-bottom:1px solid var(--line);
  scroll-margin-top:96px;
}
.page-faq .faq-sec__head{
  display:flex;
  gap:clamp(12px,2.5vw,24px);
  align-items:flex-start;
  margin-bottom:clamp(18px,3vw,28px);
}
.page-faq .faq-sec__num{
  flex:none;
  font-family:var(--font-mono);
  font-size:clamp(26px,4.4vw,44px);
  line-height:1;
  color:rgba(51,224,210,.30);
  letter-spacing:-.02em;
}
.page-faq .faq-sec__title{
  margin:0;
  font-family:var(--font-display);
  font-size:clamp(22px,3.4vw,34px);
  line-height:1.2;
  color:var(--bone);
  letter-spacing:.01em;
}
.page-faq .faq-sec__desc{
  max-width:64ch;
  margin:8px 0 0;
  font-size:14.5px;
  line-height:1.8;
  color:var(--text-soft);
}

/* ---------- 配图 ---------- */
.page-faq .faq-figure{
  margin:0 0 clamp(16px,3vw,26px);
  border:1px solid var(--line);
  border-radius:var(--radius);
  overflow:hidden;
  background:var(--faq-card);
}
.page-faq .faq-figure img{
  display:block;
  width:100%;
  height:auto;
  max-width:100%;
  object-fit:cover;
}
.page-faq .faq-figure figcaption{
  padding:10px 14px 12px;
  border-top:1px solid var(--line);
  font-size:12.5px;
  line-height:1.7;
  color:var(--text-mute);
}

/* ---------- 折叠条目 ---------- */
.page-faq .faq-list{display:grid;gap:10px;}
.page-faq .faq-item{
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:rgba(27,42,56,.55);
  transition:border-color .18s ease,background .18s ease,box-shadow .18s ease;
}
.page-faq .faq-item:hover{
  border-color:var(--line-cyan);
  box-shadow:0 10px 26px -24px rgba(0,0,0,.95);
}
.page-faq .faq-item__btn{
  display:flex;
  align-items:center;
  gap:12px;
  width:100%;
  padding:15px 16px;
  background:none;
  border:0;
  font-family:inherit;
  font-size:15px;
  font-weight:500;
  line-height:1.55;
  text-align:left;
  color:var(--bone);
  cursor:pointer;
}
.page-faq .faq-item__q{flex:1;min-width:0;}
.page-faq .faq-item__icon{
  flex:none;
  position:relative;
  width:14px;
  height:14px;
  margin-left:auto;
}
.page-faq .faq-item__icon::before,
.page-faq .faq-item__icon::after{
  content:"";
  position:absolute;
  background:var(--cyan);
  transition:transform .18s ease,background .18s ease;
}
.page-faq .faq-item__icon::before{left:0;top:6px;width:14px;height:2px;}
.page-faq .faq-item__icon::after{left:6px;top:0;width:2px;height:14px;}
.page-faq .faq-item[data-open="true"] .faq-item__icon::after{transform:rotate(90deg);}
.page-faq .faq-item__btn:hover .faq-item__icon::before,
.page-faq .faq-item__btn:hover .faq-item__icon::after{background:var(--orange);}

.page-faq .faq-item__body{display:block;padding:0 16px;}
.page-faq [data-fold][data-open="false"] .faq-item__body{display:none;}
.page-faq .faq-item__inner{
  padding:14px 0 18px;
  border-top:1px solid var(--line);
}
.page-faq .faq-item__foot{
  margin:14px 0 0;
  font-size:13px;
  line-height:1.75;
  color:var(--text-mute);
}

/* ---------- 三步排查 ---------- */
.page-faq .faq-steps{
  list-style:none;
  margin:0;
  padding:0;
  display:grid;
  gap:10px;
}
.page-faq .faq-step{
  position:relative;
  padding:14px;
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:var(--faq-step-bg);
}
.page-faq .faq-step__n{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:22px;
  height:22px;
  margin-bottom:8px;
  border:1px solid var(--line-cyan);
  border-radius:50%;
  font-family:var(--font-mono);
  font-size:11px;
  color:var(--cyan);
}
.page-faq .faq-step__t{
  margin:0 0 6px;
  font-size:14px;
  font-weight:600;
  color:var(--bone);
}
.page-faq .faq-step__d{
  margin:0;
  font-size:13px;
  line-height:1.75;
  color:var(--text-soft);
}

/* ---------- 联系支持 ---------- */
.page-faq .faq-support{
  padding:clamp(30px,5vw,62px) 0 0;
  scroll-margin-top:96px;
}
.page-faq .faq-support__grid{
  display:grid;
  gap:12px;
}
.page-faq .faq-support__card{
  padding:18px 16px;
  border:1px solid var(--line);
  border-left:2px solid var(--cyan-dim);
  border-radius:var(--radius);
  background:linear-gradient(180deg, rgba(27,42,56,.62), rgba(16,26,36,.55));
  transition:border-color .18s ease,transform .18s ease;
}
.page-faq .faq-support__card:hover{
  border-color:var(--line-cyan);
  border-left-color:var(--cyan);
  transform:translateY(-2px);
}
.page-faq .faq-support__k{
  margin:0 0 8px;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.12em;
  color:var(--cyan-dim);
  text-transform:uppercase;
}
.page-faq .faq-support__v{
  margin:0 0 12px;
  font-size:14.5px;
  line-height:1.7;
  color:var(--bone);
  word-break:break-word;
}
.page-faq .faq-support__v a{
  color:var(--bone);
  text-decoration:none;
  border-bottom:1px solid var(--line-cyan);
  transition:color .18s ease,border-color .18s ease;
}
.page-faq .faq-support__v a:hover{color:var(--cyan);border-bottom-color:var(--cyan);}
.page-faq .faq-copy{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:6px 12px;
  border:1px solid var(--line-mid);
  border-radius:var(--radius);
  background:none;
  font-family:var(--font-body);
  font-size:12.5px;
  color:var(--text-soft);
  cursor:pointer;
  transition:border-color .18s ease,color .18s ease,background .18s ease;
}
.page-faq .faq-copy:hover,
.page-faq .faq-copy:focus-visible{
  border-color:var(--cyan);
  color:var(--cyan);
  background:rgba(51,224,210,.08);
}
.page-faq .faq-copy[data-copied="true"]{
  border-color:var(--yellow);
  color:var(--yellow);
}
.page-faq .faq-support__note{
  margin:10px 0 0;
  font-size:12.5px;
  line-height:1.7;
  color:var(--text-mute);
}

.page-faq .faq-support__prep{
  margin-top:clamp(18px,3vw,28px);
  padding:18px 16px;
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:rgba(11,15,18,.45);
}
.page-faq .faq-support__prep-t{
  margin:0 0 10px;
  font-family:var(--font-display);
  font-size:17px;
  letter-spacing:.01em;
  color:var(--bone);
}
.page-faq .faq-support__prep-list{
  margin:0;
  padding:0;
  list-style:none;
  display:grid;
  gap:8px;
}
.page-faq .faq-support__prep-list li{
  position:relative;
  padding-left:18px;
  font-size:13.5px;
  line-height:1.75;
  color:var(--text-soft);
}
.page-faq .faq-support__prep-list li::before{
  content:"";
  position:absolute;
  left:0;
  top:9px;
  width:8px;
  height:1px;
  background:var(--cyan);
}
.page-faq .faq-support__prep-link{
  margin:14px 0 0;
  font-size:13px;
  line-height:1.75;
  color:var(--text-mute);
}

/* ---------- 响应式 ---------- */
@media (min-width:720px){
  .page-faq .faq-steps{grid-template-columns:repeat(3,minmax(0,1fr));}
  .page-faq .faq-step:not(:last-child)::after{
    content:"";
    position:absolute;
    right:-7px;
    top:24px;
    width:6px;
    height:1px;
    background:var(--line-cyan);
  }
  .page-faq .faq-support__prep-list{grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;}
}

@media (min-width:900px){
  .page-faq .faq-hero__grid{
    grid-template-columns:minmax(0,1.12fr) minmax(0,.88fr);
    align-items:end;
  }
  .page-faq .faq-support__grid{grid-template-columns:repeat(3,minmax(0,1fr));}
  .page-faq .faq-support__prep{padding:22px 24px;}
}

@media (min-width:1080px){
  .page-faq .faq-item__btn{padding:17px 20px;font-size:15.5px;}
  .page-faq .faq-item__body{padding:0 20px;}
  .page-faq .faq-support__card{padding:20px;}
}

@media (prefers-reduced-motion:reduce){
  .page-faq .faq-chip,
  .page-faq .faq-support__card,
  .page-faq .faq-item,
  .page-faq .faq-item__icon::before,
  .page-faq .faq-item__icon::after{transition:none;}
  .page-faq .faq-chip:hover,
  .page-faq .faq-chip:focus-visible,
  .page-faq .faq-support__card:hover{transform:none;}
}
<<<END>>>