.page-faq{
  --faq-pad: clamp(16px, 4vw, 24px);
  --faq-line-soft: rgba(28, 43, 64, .9);
  padding-bottom: clamp(40px, 7vw, 96px);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero{
  position: relative;
  border-bottom: 1px solid var(--line);
  background:
    linear-gradient(122deg, rgba(198,255,61,.08) 0%, rgba(198,255,61,0) 44%),
    linear-gradient(200deg, rgba(50,230,200,.07) 0%, rgba(50,230,200,0) 38%),
    var(--ink);
  overflow: hidden;
}
.page-faq .faq-hero::after{
  content: "";
  position: absolute;
  right: -14%;
  bottom: -46%;
  width: 58%;
  aspect-ratio: 1;
  border: 1px solid var(--line);
  transform: rotate(28deg);
  pointer-events: none;
}
.page-faq .faq-hero-grid{
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(28px, 5vw, 56px);
  padding: clamp(24px, 4vw, 44px) 0 clamp(32px, 6vw, 72px);
  align-items: center;
}
.page-faq .faq-hero-copy{ min-width: 0; }
.page-faq .faq-hero h1{
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(36px, 7vw, 82px);
  line-height: .98;
  letter-spacing: -.03em;
  margin: 14px 0 20px;
  color: var(--fog);
}
.page-faq .faq-hero h1 em{
  font-style: normal;
  color: var(--volt);
}
.page-faq .faq-lede{
  max-width: 40ch;
  margin: 0;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.78;
  color: rgba(234,242,255,.82);
}
.page-faq .faq-hero-stats{
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  list-style: none;
  margin: 28px 0 0;
  padding: 18px 0 0;
  border-top: 1px solid var(--line);
}
.page-faq .faq-stat{
  flex: 1 1 108px;
  min-width: 0;
  padding: 0 14px;
  border-left: 1px solid var(--line);
}
.page-faq .faq-stat:first-child{
  padding-left: 0;
  border-left: 0;
}
.page-faq .faq-stat strong{
  display: block;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  font-size: clamp(21px, 3vw, 30px);
  line-height: 1.1;
  color: var(--volt);
}
.page-faq .faq-stat span{
  display: block;
  margin-top: 4px;
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--mute);
}
.page-faq .faq-hero-figure{
  width: 100%;
  margin: 0;
}
.page-faq .faq-hero-figure img{
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
}

/* ---------- 主体：索引 + 问答板 ---------- */
.page-faq .faq-layout{
  display: grid;
  gap: clamp(20px, 4vw, 48px);
  padding-top: clamp(28px, 5vw, 64px);
}
.page-faq .faq-index{
  min-width: 0;
  border-top: 1px solid var(--line);
  padding-top: 16px;
}
.page-faq .faq-index-title{
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--flame);
  text-transform: uppercase;
}
.page-faq .faq-index-list{
  display: flex;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0 0 6px;
  overflow-x: auto;
  scrollbar-width: thin;
}
.page-faq .faq-index-list li{ flex: 0 0 auto; }
.page-faq .faq-index-link{
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border: 1px solid var(--line);
  background: rgba(11,22,38,.72);
  color: var(--fog);
  text-decoration: none;
  font-size: 14px;
  white-space: nowrap;
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease), color var(--dur) var(--ease);
}
.page-faq .faq-index-num{
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  font-weight: 700;
  color: var(--volt);
}
.page-faq .faq-index-count{
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 11px;
  color: var(--mute);
  margin-left: auto;
}
.page-faq .faq-index-link:hover,
.page-faq .faq-index-link:focus-visible{
  border-color: var(--volt);
  background: rgba(198,255,61,.09);
  color: var(--fog);
  outline: none;
}
.page-faq .faq-index-note{
  margin: 14px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--mute);
}

.page-faq .faq-board{
  min-width: 0;
  display: grid;
  gap: clamp(28px, 4vw, 52px);
}
.page-faq .faq-group{
  scroll-margin-top: 110px;
  min-width: 0;
}
.page-faq .faq-group-head{
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: baseline;
  gap: 6px 14px;
  padding-bottom: 14px;
  margin-bottom: 16px;
  border-bottom: 1px solid var(--line);
}
.page-faq .faq-group-num{
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  font-size: clamp(14px, 2vw, 18px);
  color: var(--flame);
  letter-spacing: .04em;
}
.page-faq .faq-group-head h2{
  margin: 0;
  font-size: clamp(22px, 3.4vw, 34px);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -.01em;
  color: var(--fog);
}
.page-faq .faq-group-lede{
  grid-column: 1 / -1;
  margin: 8px 0 0;
  max-width: 52ch;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--mute);
}

.page-faq .faq-list{
  display: grid;
  gap: 10px;
}
.page-faq .faq-item{
  border: 1px solid var(--line);
  background: var(--ink-2);
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.page-faq .faq-item:hover{
  border-color: var(--cyan);
}
.page-faq .faq-item[open]{
  border-color: rgba(198,255,61,.5);
  background: linear-gradient(180deg, rgba(198,255,61,.07), rgba(11,22,38,.9) 58%);
  box-shadow: inset 3px 0 0 var(--volt);
}
.page-faq .faq-q{
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 18px var(--faq-pad);
  cursor: pointer;
  list-style: none;
  font-weight: 600;
  font-size: clamp(15px, 1.8vw, 17px);
  line-height: 1.5;
  color: var(--fog);
  transition: color var(--dur) var(--ease);
}
.page-faq .faq-q::-webkit-details-marker{ display: none; }
.page-faq .faq-q:hover{ color: var(--volt); }
.page-faq .faq-q:focus-visible{
  outline: 2px solid var(--cyan);
  outline-offset: -2px;
}
.page-faq .faq-code{
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  font-size: 12.5px;
  letter-spacing: .06em;
  color: var(--flame);
}
.page-faq .faq-q-text{
  flex: 1 1 auto;
  min-width: 0;
}
.page-faq .faq-toggle{
  flex: 0 0 auto;
  width: 22px;
  height: 22px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1;
  color: var(--volt);
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.page-faq .faq-toggle::before{ content: "+"; }
.page-faq .faq-item[open] .faq-toggle{
  border-color: var(--volt);
  transform: rotate(180deg);
}
.page-faq .faq-item[open] .faq-toggle::before{ content: "−"; }
.page-faq .faq-a{
  padding: 0 var(--faq-pad) 20px calc(var(--faq-pad) + 42px);
  animation: faq-drop var(--dur) var(--ease) both;
}
.page-faq .faq-a p{
  margin: 0;
  font-size: 14.5px;
  line-height: 1.82;
  color: rgba(234,242,255,.84);
}
.page-faq .faq-a a{
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.page-faq .faq-a a:hover{ color: var(--volt); }
.page-faq .term{
  text-decoration: underline dotted var(--cyan);
  text-underline-offset: 4px;
  color: var(--fog);
}
@keyframes faq-drop{
  from{ opacity: 0; transform: translateY(-6px); }
  to{ opacity: 1; transform: translateY(0); }
}

/* ---------- 页尾支持面板 ---------- */
.page-faq .faq-support{
  border-top: 1px solid var(--line);
  background:
    linear-gradient(160deg, rgba(139,108,255,.10) 0%, rgba(139,108,255,0) 42%),
    var(--ink);
}
.page-faq .faq-support-grid{
  display: grid;
  gap: clamp(24px, 4vw, 48px);
  padding: clamp(32px, 6vw, 80px) 0;
  align-items: center;
}
.page-faq .faq-support-figure{
  width: 100%;
  margin: 0;
  border: 1px solid var(--line);
}
.page-faq .faq-support-figure img{
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}
.page-faq .faq-support-body{ min-width: 0; }
.page-faq .faq-support-body h2{
  margin: 10px 0 12px;
  font-size: clamp(24px, 4vw, 44px);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -.02em;
  color: var(--fog);
}
.page-faq .faq-support-lede{
  margin: 0 0 22px;
  max-width: 46ch;
  font-size: 15px;
  line-height: 1.78;
  color: rgba(234,242,255,.8);
}
.page-faq .faq-contact-list{
  list-style: none;
  margin: 0 0 18px;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.page-faq .faq-contact-item{
  display: grid;
  grid-template-columns: 88px minmax(0, 1fr);
  gap: 12px;
  padding: 12px 14px;
  background: var(--ink-2);
}
.page-faq .faq-contact-label{
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .12em;
  color: var(--mute);
  padding-top: 3px;
}
.page-faq .faq-contact-value{
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--fog);
  overflow-wrap: break-word;
}
.page-faq .faq-contact-note{
  margin: 0 0 22px;
  font-size: 13px;
  line-height: 1.75;
  color: var(--mute);
}
.page-faq .faq-support-actions{
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ---------- 断点 ---------- */
@media (min-width: 640px){
  .page-faq .faq-a{
    padding-left: calc(var(--faq-pad) + 56px);
  }
  .page-faq .faq-contact-item{
    grid-template-columns: 104px minmax(0, 1fr);
  }
}

@media (min-width: 900px){
  .page-faq .faq-hero-grid{
    grid-template-columns: minmax(0, 1.12fr) minmax(0, .88fr);
  }
  .page-faq .faq-support-grid{
    grid-template-columns: minmax(0, .92fr) minmax(0, 1.08fr);
  }
}

@media (min-width: 960px){
  .page-faq .faq-layout{
    grid-template-columns: 248px minmax(0, 1fr);
    gap: clamp(32px, 4vw, 64px);
    align-items: start;
  }
  .page-faq .faq-index{
    position: sticky;
    top: 96px;
    border-top: 1px solid var(--line);
  }
  .page-faq .faq-index-list{
    flex-direction: column;
    align-items: stretch;
    overflow: visible;
    gap: 6px;
    padding-bottom: 0;
  }
  .page-faq .faq-index-list li{ flex: 1 1 auto; }
  .page-faq .faq-index-link{
    width: 100%;
    white-space: normal;
    padding: 11px 12px;
    font-size: 13.5px;
  }
  .page-faq .faq-index-label{ min-width: 0; }
}

@media (min-width: 1200px){
  .page-faq .faq-layout{
    grid-template-columns: 280px minmax(0, 1fr);
  }
}

@media (prefers-reduced-motion: reduce){
  .page-faq .faq-a{ animation: none; }
  .page-faq .faq-toggle{ transition: none; }
}
<<<END>>>