.page-faq{
  --faq-pad-y: clamp(44px, 7vw, 92px);
  --faq-rule-gap: clamp(30px, 5vw, 54px);
  background: var(--c-void);
  color: var(--c-paper);
  font-family: var(--font-body);
  overflow-x: hidden;
}

.page-faq a{
  color: inherit;
}

.page-faq .breadcrumb{
  margin-bottom: clamp(20px, 3vw, 34px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero{
  position: relative;
  padding: calc(var(--header-h) + clamp(26px, 4vw, 54px)) 0 clamp(38px, 6vw, 76px);
  background:
    radial-gradient(circle at 82% 8%, rgba(61,245,208,.15), transparent 46%),
    radial-gradient(circle at 8% 92%, rgba(255,106,42,.12), transparent 44%),
    var(--c-void);
}

.page-faq .faq-hero::after{
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: var(--line);
}

.page-faq .faq-hero__grid{
  display: grid;
  gap: clamp(26px, 4vw, 44px);
}

.page-faq .faq-hero__lead{
  min-width: 0;
}

.page-faq .faq-hero h1{
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(36px, 7.2vw, 86px);
  line-height: .96;
  letter-spacing: -.03em;
  margin: 14px 0 0;
  color: var(--c-paper);
}

.page-faq .faq-hero__sub{
  margin: clamp(18px, 2.4vw, 26px) 0 0;
  max-width: 32em;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.8;
  color: var(--c-silver);
}

.page-faq .faq-hero__tags{
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: clamp(20px, 3vw, 30px);
}

.page-faq .faq-hero__tags .tag{
  transition: transform .18s var(--ease), background-color .18s var(--ease), color .18s var(--ease);
}

.page-faq .faq-hero__tags a.tag:hover{
  transform: rotate(0deg) translateY(-2px);
  color: var(--c-void);
  background: var(--c-cyan);
}

.page-faq .faq-hero__media{
  margin: 0;
  border: 1px solid var(--line-strong);
  background: linear-gradient(160deg, var(--c-slate), var(--c-void) 78%);
  box-shadow: var(--shadow-stack);
}

.page-faq .faq-hero__media img{
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 2 / 1;
  object-fit: cover;
}

.page-faq .faq-hero__media figcaption{
  padding: 12px 16px 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  line-height: 1.7;
  color: var(--c-mist);
  border-top: 1px solid var(--line);
}

/* ---------- 三步路径 ---------- */
.page-faq .faq-steps{
  background: var(--c-night);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-steps__head{
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
  padding: clamp(22px, 3vw, 32px) 0 4px;
}

.page-faq .faq-steps__note{
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--c-mist);
}

.page-faq .faq-steps__list{
  list-style: none;
  margin: 0;
  padding: 6px 0 10px;
  display: grid;
  gap: 0;
}

.page-faq .faq-step{
  position: relative;
  padding: 22px 0 26px;
  border-top: 1px solid var(--line);
}

.page-faq .faq-step__no{
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(30px, 4.4vw, 46px);
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--c-amber);
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-step__name{
  display: block;
  margin-top: 10px;
  font-family: var(--font-display);
  font-size: 21px;
  font-weight: 600;
  letter-spacing: -.01em;
  color: var(--c-paper);
}

.page-faq .faq-step__desc{
  margin: 8px 0 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--c-silver);
}

.page-faq .faq-step__done{
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px dashed rgba(167,180,176,.3);
  font-size: 13px;
  line-height: 1.7;
  color: var(--c-mist);
}

.page-faq .faq-step__done span{
  display: block;
  margin-bottom: 4px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--c-cyan);
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-body{
  display: grid;
  gap: clamp(28px, 4vw, 40px);
  padding: var(--faq-pad-y) 0 clamp(56px, 8vw, 100px);
}

.page-faq .faq-main{
  min-width: 0;
}

/* ---------- 章节目录 ---------- */
.page-faq .faq-toc{
  border-top: 2px solid var(--c-cyan);
  padding-top: 14px;
}

.page-faq .faq-toc .page-toc__title{
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--c-mist);
}

.page-faq .faq-toc .page-toc__list{
  list-style: none;
  margin: 0;
  padding: 0 0 8px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.page-faq .faq-toc .page-toc__list li{
  flex: 0 0 auto;
  margin: 0;
}

.page-faq .faq-toc .page-toc__link{
  display: block;
  padding: 7px 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-size: 13px;
  line-height: 1.4;
  white-space: nowrap;
  text-decoration: none;
  color: var(--c-silver);
  transition: color .16s var(--ease), border-color .16s var(--ease), background-color .16s var(--ease);
}

.page-faq .faq-toc .page-toc__link:hover,
.page-faq .faq-toc .page-toc__link.is-active{
  color: var(--c-void);
  background: var(--c-cyan);
  border-color: var(--c-cyan);
}

/* ---------- 问题分组 ---------- */
.page-faq .faq-group{
  margin-bottom: clamp(36px, 5vw, 64px);
}

.page-faq .faq-group__head{
  display: grid;
  gap: 6px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line-strong);
  margin-bottom: 4px;
}

.page-faq .faq-group__idx{
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--c-orange);
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-group__title{
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(24px, 3.4vw, 34px);
  font-weight: 600;
  letter-spacing: -.02em;
  line-height: 1.1;
  color: var(--c-paper);
}

.page-faq .faq-group__lede{
  margin: 0;
  max-width: 34em;
  font-size: 15px;
  line-height: 1.75;
  color: var(--c-silver);
}

/* ---------- 手风琴 ---------- */
.page-faq .faq-item{
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-item summary{
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 17px 0;
  list-style: none;
  cursor: pointer;
  transition: color .16s var(--ease);
}

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

.page-faq .faq-item summary:hover .faq-item__q{
  color: var(--c-cyan);
}

.page-faq .faq-item__mark{
  position: relative;
  flex: 0 0 auto;
  width: 14px;
  height: 14px;
  margin-top: 7px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  transition: border-color .2s var(--ease), transform .2s var(--ease);
}

.page-faq .faq-item__mark::before,
.page-faq .faq-item__mark::after{
  content: "";
  position: absolute;
  left: 3px;
  right: 3px;
  top: 50%;
  height: 1px;
  background: var(--c-silver);
  transform: translateY(-50%);
}

.page-faq .faq-item__mark::after{
  transform: translateY(-50%) rotate(90deg);
  transition: opacity .2s var(--ease);
}

.page-faq .faq-item[open] .faq-item__mark{
  border-color: var(--c-cyan);
  transform: rotate(0deg);
}

.page-faq .faq-item[open] .faq-item__mark::before{
  background: var(--c-cyan);
}

.page-faq .faq-item[open] .faq-item__mark::after{
  opacity: 0;
}

.page-faq .faq-item__q{
  margin: 0;
  flex: 1 1 auto;
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--c-paper);
  transition: color .16s var(--ease);
}

.page-faq .faq-item__a{
  padding: 0 0 18px 26px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--c-silver);
}

.page-faq .faq-item__a p{
  margin: 0 0 8px;
}

.page-faq .faq-item__a p:last-child{
  margin-bottom: 0;
}

/* ---------- 细线数据提示 ---------- */
.page-faq .faq-rule{
  display: flex;
  align-items: center;
  gap: 14px;
  margin: var(--faq-rule-gap) 0;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .16em;
  line-height: 1.8;
  text-transform: uppercase;
  color: var(--c-mist);
  text-align: center;
}

.page-faq .faq-rule::before,
.page-faq .faq-rule::after{
  content: "";
  flex: 1 1 auto;
  height: 1px;
  background: var(--line);
}

/* ---------- 榜单反馈（纸张叠层） ---------- */
.page-faq .faq-group--rank{
  margin-bottom: clamp(36px, 5vw, 64px);
}

.page-faq .faq-rank{
  position: relative;
  display: grid;
  gap: clamp(22px, 3vw, 34px);
  padding: clamp(22px, 3.4vw, 40px);
  background: var(--c-paper);
  color: var(--c-void);
  box-shadow: var(--shadow-stack), 8px 8px 0 -1px rgba(12,43,35,.9);
}

.page-faq .faq-rank::before{
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 64px;
  height: 3px;
  background: var(--c-orange);
}

.page-faq .faq-rank__col{
  min-width: 0;
}

.page-faq .faq-rank .faq-group__idx{
  color: var(--c-rust);
}

.page-faq .faq-rank__title{
  margin: 6px 0 0;
  font-family: var(--font-display);
  font-size: clamp(24px, 3.4vw, 34px);
  font-weight: 600;
  letter-spacing: -.02em;
  line-height: 1.1;
  color: var(--c-void);
}

.page-faq .faq-rank__lede{
  margin: 10px 0 6px;
  max-width: 32em;
  font-size: 15px;
  line-height: 1.75;
  color: rgba(6,9,10,.72);
}

.page-faq .faq-rank .faq-item{
  border-bottom: 1px solid rgba(6,9,10,.16);
}

.page-faq .faq-rank .faq-item__q{
  color: var(--c-void);
}

.page-faq .faq-rank .faq-item summary:hover .faq-item__q{
  color: var(--c-rust);
}

.page-faq .faq-rank .faq-item__a{
  color: rgba(6,9,10,.76);
}

.page-faq .faq-rank .faq-item__mark{
  border-color: rgba(6,9,10,.34);
}

.page-faq .faq-rank .faq-item__mark::before,
.page-faq .faq-rank .faq-item__mark::after{
  background: rgba(6,9,10,.7);
}

.page-faq .faq-rank .faq-item[open] .faq-item__mark{
  border-color: var(--c-orange);
}

.page-faq .faq-rank .faq-item[open] .faq-item__mark::before{
  background: var(--c-orange);
}

.page-faq .faq-rank__media{
  margin: 0;
  align-self: start;
  border: 1px solid rgba(6,9,10,.2);
  background: var(--c-night);
}

.page-faq .faq-rank__media img{
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 9 / 6.5;
  object-fit: cover;
}

.page-faq .faq-rank__media figcaption{
  padding: 10px 14px 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  line-height: 1.7;
  color: var(--c-mist);
  border-top: 1px solid rgba(6,9,10,.16);
}

/* ---------- 联系支持 ---------- */
.page-faq .faq-help{
  margin-top: clamp(10px, 2vw, 16px);
  padding: clamp(28px, 4.4vw, 52px);
  background:
    radial-gradient(circle at 88% 6%, rgba(63,245,208,.14), transparent 52%),
    var(--c-night);
  border: 1px solid var(--line);
}

.page-faq .faq-help__grid{
  display: grid;
  gap: clamp(24px, 3.4vw, 40px);
}

.page-faq .faq-help__title{
  margin: 10px 0 0;
  max-width: 18em;
  font-family: var(--font-display);
  font-size: clamp(24px, 3.6vw, 38px);
  font-weight: 600;
  letter-spacing: -.02em;
  line-height: 1.12;
  color: var(--c-paper);
}

.page-faq .faq-help__text{
  margin: 12px 0 0;
  max-width: 32em;
  font-size: 15px;
  line-height: 1.8;
  color: var(--c-silver);
}

.page-faq .faq-help__cta{
  margin-top: clamp(18px, 3vw, 26px);
}

.page-faq .faq-contact{
  display: grid;
  gap: 2px;
  align-content: start;
  border-top: 1px solid var(--line-strong);
}

.page-faq .faq-contact__item{
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-contact__label{
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--c-mist);
}

.page-faq .faq-contact__value{
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(15px, 2.2vw, 18px);
  letter-spacing: -.01em;
  line-height: 1.5;
  color: var(--c-paper);
  text-decoration: none;
  word-break: break-word;
  font-variant-numeric: tabular-nums;
}

.page-faq a.faq-contact__value:hover{
  color: var(--c-cyan);
}

.page-faq .faq-copy{
  justify-self: start;
  padding: 6px 14px;
  font-size: 12px;
  letter-spacing: .06em;
}

.page-faq .faq-copy[data-copied="true"]{
  color: var(--c-cyan);
  border-color: var(--c-cyan);
}

/* ---------- 中等宽度 ---------- */
@media (min-width: 760px){
  .page-faq .faq-hero__grid{
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    align-items: end;
  }

  .page-faq .faq-rank{
    grid-template-columns: minmax(0, 1.18fr) minmax(0, .82fr);
    align-items: start;
  }

  .page-faq .faq-contact__item{
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    column-gap: 16px;
  }

  .page-faq .faq-contact__label{
    grid-column: 1 / -1;
  }
}

@media (min-width: 880px){
  .page-faq .faq-steps__list{
    grid-template-columns: repeat(3, minmax(0, 1fr));
    padding-bottom: 14px;
  }

  .page-faq .faq-step{
    border-top: 0;
    border-left: 1px solid var(--line);
    padding: 26px 26px 30px;
  }

  .page-faq .faq-step:first-child{
    border-left: 0;
    padding-left: 0;
  }

  .page-faq .faq-help__grid{
    grid-template-columns: minmax(0, 1fr) minmax(0, .88fr);
    align-items: start;
  }
}

/* ---------- 桌面两栏 ---------- */
@media (min-width: 1040px){
  .page-faq .faq-body{
    grid-template-columns: minmax(0, 3fr) minmax(0, 7fr);
    gap: clamp(34px, 4.4vw, 68px);
    align-items: start;
  }

  .page-faq .faq-toc{
    position: sticky;
    top: calc(var(--header-h) + 28px);
  }

  .page-faq .faq-toc .page-toc__list{
    display: grid;
    gap: 3px;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-toc .page-toc__list li{
    flex: none;
  }

  .page-faq .faq-toc .page-toc__link{
    padding: 9px 10px;
    border: 0;
    border-left: 2px solid var(--line);
    border-radius: 0;
    font-size: 14px;
    white-space: normal;
  }

  .page-faq .faq-toc .page-toc__link:hover,
  .page-faq .faq-toc .page-toc__link.is-active{
    color: var(--c-cyan);
    background: transparent;
    border-left-color: var(--c-cyan);
  }
}

@media (prefers-reduced-motion: reduce){
  .page-faq .faq-hero__tags a.tag:hover,
  .page-faq .faq-item__mark{
    transform: none;
  }
}
<<<END>>>