.page-faq{
  --faq-edge: rgba(143,179,199,.28);
  --faq-ring: rgba(53,224,208,.10);
  position: relative;
  display: block;
  overflow-x: clip;
  background: var(--deep);
  color: var(--ice);
}

/* ---------- 首屏框景 ---------- */
.page-faq__hero{
  position: relative;
  padding: clamp(1.25rem,4vw,2.5rem) 0 clamp(2rem,5vw,4rem);
}
.page-faq__hero::before{
  content: "";
  position: absolute;
  right: -26%;
  top: -34%;
  width: min(820px, 92vw);
  aspect-ratio: 1;
  border-radius: 50%;
  background: repeating-radial-gradient(circle at 50% 50%, var(--faq-ring) 0 1px, transparent 1px 48px);
  opacity: .85;
  pointer-events: none;
}
.page-faq__frame{
  position: relative;
  margin-top: clamp(1rem,3vw,1.75rem);
  padding: clamp(1.25rem,3.5vw,2.75rem);
  border: 1px solid var(--faq-edge);
  border-radius: var(--r-xl);
  background: radial-gradient(120% 90% at 80% 0%, rgba(53,224,208,.16), transparent 62%),
              linear-gradient(160deg, rgba(11,43,69,.94), rgba(6,24,38,.94));
  overflow: hidden;
  isolation: isolate;
}
.page-faq__frame::before{
  content: "";
  position: absolute;
  left: .45rem;
  top: 1.5rem;
  bottom: 1.5rem;
  width: .4rem;
  background: repeating-linear-gradient(to bottom, rgba(143,179,199,.5) 0 1px, transparent 1px 18px);
  opacity: .75;
  pointer-events: none;
}
.page-faq__frame::after{
  content: "";
  position: absolute;
  right: -70px;
  top: -70px;
  width: 220px;
  aspect-ratio: 1;
  border-radius: 50%;
  border: 1px solid rgba(255,107,44,.35);
  box-shadow: 0 0 0 26px rgba(255,107,44,.06), 0 0 0 62px rgba(53,224,208,.04);
  pointer-events: none;
}
.page-faq__hero-grid{
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.5rem,3vw,2.5rem);
}
.page-faq__hero-copy{ min-width: 0; }
.page-faq__title{
  margin: .55rem 0 1rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2rem, 5.4vw, 3.7rem);
  line-height: 1.12;
  letter-spacing: -.02em;
  text-wrap: balance;
  color: var(--ice);
}
.page-faq__lede{
  max-width: 34em;
  margin: 0 0 1.6rem;
  font-size: clamp(.98rem, 1.4vw, 1.06rem);
  line-height: 1.78;
  color: rgba(234,246,255,.78);
}
.page-faq__quick{
  display: flex;
  flex-wrap: wrap;
  gap: .7rem;
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-faq__quick-link{
  display: inline-flex;
  align-items: baseline;
  gap: .6rem;
  padding: .7rem 1.15rem;
  border-radius: var(--r-pill);
  border: 1px solid rgba(255,107,44,.55);
  background: linear-gradient(180deg, rgba(255,107,44,.20), rgba(255,107,44,.05));
  color: var(--ice);
  text-decoration: none;
  transition: transform .3s var(--ease), border-color .3s var(--ease);
}
.page-faq__quick-link:hover{
  transform: translateY(-2px);
  border-color: var(--orange);
}
.page-faq__quick-link--cyan{
  border-color: rgba(53,224,208,.5);
  background: linear-gradient(180deg, rgba(53,224,208,.18), rgba(53,224,208,.04));
}
.page-faq__quick-link--cyan:hover{ border-color: var(--cyan); }
.page-faq__quick-k{
  font-size: .9rem;
  letter-spacing: .02em;
  color: rgba(234,246,255,.88);
}
.page-faq__quick-v{
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: .95rem;
  color: var(--orange);
}
.page-faq__quick-link--cyan .page-faq__quick-v{ color: var(--cyan); }
.page-faq__hero-figure{
  margin: 0;
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--hair);
  background: rgba(11,43,69,.55);
}
.page-faq__hero-figure img{
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}

/* ---------- 三条入口路径 ---------- */
.page-faq__paths{
  position: relative;
  padding-block: clamp(2.25rem,6vw,4.5rem);
}
.page-faq__paths::before{
  content: "";
  position: absolute;
  left: -6%;
  top: 16%;
  width: 44%;
  max-width: 520px;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(53,224,208,.6), transparent);
  transform: rotate(-12deg);
  transform-origin: left center;
  pointer-events: none;
}
.page-faq__paths-grid{
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.6rem,3.5vw,3rem);
}
.page-faq__paths-aside{ min-width: 0; }
.page-faq__aside-text{
  max-width: 30em;
  margin: 0;
  color: rgba(234,246,255,.72);
  line-height: 1.78;
  font-size: .98rem;
}
.page-faq__paths-figure{
  margin: 1.4rem 0 0;
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--hair);
  background: rgba(11,43,69,.5);
}
.page-faq__paths-figure img{
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}
.page-faq__paths-list{
  display: grid;
  gap: 1rem;
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-faq__path{
  position: relative;
  padding: 1.15rem 1.2rem 1.25rem 3.2rem;
  border: 1px solid var(--hair);
  border-radius: var(--r-md);
  background: linear-gradient(140deg, rgba(11,43,69,.86), rgba(6,24,38,.58));
  transition: border-color .3s var(--ease), transform .3s var(--ease);
}
.page-faq__path:hover{
  border-color: rgba(53,224,208,.5);
  transform: translateX(3px);
}
.page-faq__path-num{
  position: absolute;
  left: 1.1rem;
  top: 1.15rem;
  font-family: var(--font-mono);
  font-size: .95rem;
  font-weight: 600;
  color: var(--cyan);
  letter-spacing: .06em;
}
.page-faq__path-title{
  margin: 0 0 .45rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.15rem;
  color: var(--ice);
}
.page-faq__path p{
  margin: 0 0 .75rem;
  font-size: .96rem;
  line-height: 1.72;
  color: rgba(234,246,255,.74);
}
.page-faq__path-link{
  display: inline-block;
  font-size: .9rem;
  font-weight: 600;
  color: var(--orange);
  text-decoration: none;
  padding-bottom: 2px;
  border-bottom: 1px solid rgba(255,107,44,.42);
  transition: border-color .25s var(--ease), color .25s var(--ease);
}
.page-faq__path-link:hover{
  color: #FF8B57;
  border-color: var(--orange);
}

/* ---------- 问答主区 ---------- */
.page-faq__deck{
  position: relative;
  padding-block: clamp(2.25rem,6vw,4.5rem);
  border-top: 1px solid var(--hair);
  background:
    radial-gradient(70% 46% at 8% 0%, rgba(53,224,208,.09), transparent 72%),
    linear-gradient(180deg, rgba(11,43,69,.55), rgba(6,24,38,0) 42%);
}
.page-faq__deck-grid{
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.5rem,3vw,3rem);
  align-items: start;
}
.page-faq__toc{
  padding: 1.1rem 1.15rem;
  border: 1px solid var(--hair);
  border-radius: var(--r-md);
  background: rgba(11,43,69,.62);
}
.page-faq__toc-title{
  margin: 0 0 .8rem;
  font-family: var(--font-mono);
  font-size: .76rem;
  font-weight: 600;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--mist);
}
.page-faq__toc-list{
  display: grid;
  gap: .12rem;
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-faq__toc-list a{
  display: flex;
  align-items: baseline;
  gap: .6rem;
  padding: .45rem .35rem;
  font-size: .94rem;
  color: rgba(234,246,255,.8);
  text-decoration: none;
  border-left: 2px solid transparent;
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  transition: color .25s var(--ease), border-color .25s var(--ease), background .25s var(--ease);
}
.page-faq__toc-list a::before{
  content: attr(data-idx);
  font-family: var(--font-mono);
  font-size: .72rem;
  color: var(--cyan);
  opacity: .85;
}
.page-faq__toc-list a:hover{
  color: var(--ice);
  border-left-color: var(--cyan);
  background: rgba(53,224,208,.08);
}
.page-faq__totop{
  width: 100%;
  margin-top: 1rem;
  padding: .6rem .9rem;
  border-radius: var(--r-pill);
  border: 1px solid var(--hair-strong);
  background: transparent;
  color: var(--ice);
  font-family: inherit;
  font-size: .88rem;
  cursor: pointer;
  transition: border-color .25s var(--ease), color .25s var(--ease);
}
.page-faq__totop:hover{
  border-color: var(--orange);
  color: var(--orange);
}
.page-faq__columns{ min-width: 0; }
.page-faq__group{ scroll-margin-top: 7rem; }
.page-faq__group + .page-faq__group{
  margin-top: clamp(2rem,4vw,3rem);
  padding-top: clamp(2rem,4vw,3rem);
  border-top: 1px solid var(--hair);
}
.page-faq__group-title{
  display: flex;
  align-items: baseline;
  gap: .85rem;
  margin: 0 0 1.1rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.35rem,2.6vw,1.85rem);
  color: var(--ice);
}
.page-faq__group-num{
  font-family: var(--font-mono);
  font-size: .95rem;
  font-weight: 600;
  letter-spacing: .08em;
  color: var(--orange);
}
.page-faq__q{
  border-bottom: 1px solid var(--hair);
  transition: background .3s var(--ease);
}
.page-faq__q:first-of-type{ border-top: 1px solid var(--hair); }
.page-faq__q[open]{
  background: linear-gradient(90deg, rgba(53,224,208,.07), transparent 72%);
}
.page-faq__q-head{
  display: flex;
  align-items: baseline;
  gap: .8rem;
  padding: 1rem .5rem;
  list-style: none;
  cursor: pointer;
  font-size: clamp(.98rem,1.6vw,1.05rem);
  font-weight: 600;
  color: var(--ice);
}
.page-faq__q-head::-webkit-details-marker{ display: none; }
.page-faq__q-head::after{
  content: "+";
  margin-left: auto;
  flex: none;
  font-family: var(--font-mono);
  font-size: 1.15rem;
  line-height: 1;
  color: var(--cyan);
}
.page-faq__q[open] > .page-faq__q-head::after{
  content: "−";
  color: var(--orange);
}
.page-faq__q-num{
  flex: none;
  font-family: var(--font-mono);
  font-size: .78rem;
  font-weight: 600;
  letter-spacing: .04em;
  color: var(--mist);
}
.page-faq__q-text{ flex: 1 1 auto; }
.page-faq__a{
  padding: 0 .5rem 1.15rem 2.35rem;
  font-size: .96rem;
  line-height: 1.78;
  color: rgba(234,246,255,.76);
}
.page-faq__a p{ margin: 0 0 .6rem; }
.page-faq__a p:last-child{ margin-bottom: 0; }
.page-faq__a a{
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53,224,208,.36);
}
.page-faq__a a:hover{ border-color: var(--cyan); }
.page-faq__fee{
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--orange);
  white-space: nowrap;
}
.page-faq__copy{
  display: inline-flex;
  align-items: center;
  margin-left: .45rem;
  padding: .24rem .72rem;
  border-radius: var(--r-pill);
  border: 1px solid rgba(53,224,208,.45);
  background: rgba(53,224,208,.08);
  color: var(--cyan);
  font-family: inherit;
  font-size: .8rem;
  cursor: pointer;
  vertical-align: middle;
  transition: background .25s var(--ease), border-color .25s var(--ease);
}
.page-faq__copy:hover{
  background: rgba(53,224,208,.18);
  border-color: var(--cyan);
}

/* ---------- 收尾 ---------- */
.page-faq__closing{
  padding-block: 0 clamp(2.5rem,6vw,4.5rem);
}
.page-faq__closing-box{
  position: relative;
  padding: clamp(1.6rem,4vw,2.8rem);
  border: 1px solid var(--faq-edge);
  border-radius: var(--r-xl);
  background:
    radial-gradient(90% 120% at 100% 0%, rgba(255,107,44,.20), transparent 58%),
    linear-gradient(140deg, rgba(11,43,69,.9), rgba(6,24,38,.9));
  overflow: hidden;
}
.page-faq__closing-box::before{
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--cyan), var(--orange), transparent);
  opacity: .7;
}
.page-faq__closing-title{
  margin: 0 0 .6rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.4rem,3.4vw,2.1rem);
  color: var(--ice);
}
.page-faq__closing-text{
  max-width: 32em;
  margin: 0 0 1.3rem;
  line-height: 1.75;
  color: rgba(234,246,255,.74);
}
.page-faq__closing-actions{
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
}

/* ---------- 响应式 ---------- */
@media (min-width: 760px){
  .page-faq__hero-grid{
    grid-template-columns: minmax(0,1.08fr) minmax(0,.92fr);
    align-items: center;
  }
  .page-faq__paths-list{
    grid-template-columns: 1fr;
  }
}

@media (min-width: 960px){
  .page-faq__paths-grid{
    grid-template-columns: minmax(0,.84fr) minmax(0,1.16fr);
    align-items: start;
  }
  .page-faq__path:nth-child(2){ margin-left: 1.8rem; }
  .page-faq__path:nth-child(3){ margin-left: 3.6rem; }
  .page-faq__deck-grid{
    grid-template-columns: 252px minmax(0,1fr);
    gap: clamp(1.75rem,3vw,3rem);
  }
  .page-faq__toc{
    position: sticky;
    top: 6.5rem;
    max-height: calc(100vh - 9rem);
    overflow-y: auto;
  }
}

@media (min-width: 1120px){
  .page-faq__path:nth-child(2){ margin-left: 2.6rem; }
  .page-faq__path:nth-child(3){ margin-left: 5.2rem; }
}

@media (prefers-reduced-motion: reduce){
  .page-faq__quick-link,
  .page-faq__path,
  .page-faq__path-link,
  .page-faq__toc-list a,
  .page-faq__totop,
  .page-faq__copy,
  .page-faq__q{
    transition: none;
  }
  .page-faq__quick-link:hover,
  .page-faq__path:hover{
    transform: none;
  }
}