.page-faq{
  --faq-gap: clamp(22px, 3.6vw, 44px);
  --faq-radius: 2px;
  background: var(--c-abyss);
  color: var(--c-mist);
  font-family: var(--font-body);
  padding-bottom: clamp(40px, 7vw, 90px);
  overflow-x: clip;
}

/* ---------- 面包屑 ---------- */
.page-faq .crumbs{padding-top: clamp(16px, 3vw, 26px);}
.page-faq .crumbs__list{
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  text-transform: uppercase;
}
.page-faq .crumbs__link{
  color: var(--c-steel);
  text-decoration: none;
  transition: color .2s var(--ease);
}
.page-faq .crumbs__link:hover,
.page-faq .crumbs__link[aria-current="page"]{color: var(--c-paper);}
.page-faq .crumbs__sep{color: var(--c-steel); opacity: .55;}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero{
  position: relative;
  overflow: hidden;
  padding: clamp(24px, 4vw, 54px) 0 clamp(34px, 5.5vw, 70px);
}
.page-faq .faq-hero::before{
  content: "";
  position: absolute;
  inset: -18% -12% auto -12%;
  height: 130%;
  pointer-events: none;
  background:
    radial-gradient(52% 60% at 84% 4%, rgba(34, 230, 210, .16), transparent 64%),
    radial-gradient(46% 58% at 2% 96%, rgba(255, 107, 44, .13), transparent 62%);
}
.page-faq .faq-hero::after{
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: linear-gradient(var(--line-soft) 1px, transparent 1px);
  background-size: 100% 76px;
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, .55), transparent 72%);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, .55), transparent 72%);
}
.page-faq .faq-hero__grid{
  position: relative;
  z-index: 1;
  display: grid;
  gap: var(--faq-gap);
}
.page-faq .faq-hero__copy h1{
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(32px, 6.6vw, 58px);
  line-height: 1.04;
  letter-spacing: -.02em;
  color: var(--c-paper);
  max-width: 15em;
}
.page-faq .faq-hero__lead{
  margin: 18px 0 0;
  max-width: 58ch;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.82;
  color: var(--c-mist);
}
.page-faq .faq-hero__actions{
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}
.page-faq .faq-hero__meta{
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin: 30px 0 0;
  padding: 16px 0 0;
  border-top: 1px solid var(--line-signal);
}
.page-faq .faq-hero__meta-item dt{
  margin: 0 0 4px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--c-steel);
}
.page-faq .faq-hero__meta-item dd{
  margin: 0;
  font-size: clamp(17px, 2.4vw, 22px);
  color: var(--c-cyan);
  letter-spacing: .02em;
}
.page-faq .faq-hero__figure{
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--faq-radius);
  background: var(--c-night);
  box-shadow: var(--shadow-2);
  overflow: hidden;
}
.page-faq .faq-hero__figure img{
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}
.page-faq .faq-hero__figure .media__caption{
  padding: 10px 14px;
  border-top: 1px solid var(--line-soft);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .06em;
  color: var(--c-steel);
}

/* ---------- 分类索引 ---------- */
.page-faq .faq-index{
  padding: clamp(28px, 4vw, 50px) 0 clamp(30px, 4.5vw, 56px);
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
  background: linear-gradient(180deg, rgba(11, 28, 47, .62), rgba(7, 19, 33, 0));
}
.page-faq .faq-index__head h2{
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(21px, 3.4vw, 30px);
  line-height: 1.18;
  letter-spacing: -.01em;
  color: var(--c-paper);
}
.page-faq .faq-index__note{
  margin: 12px 0 0;
  max-width: 62ch;
  font-size: 14px;
  line-height: 1.8;
  color: var(--c-mist);
}
.page-faq .faq-legend{
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line-soft);
}
.page-faq .faq-legend li{
  border-right: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
}
.page-faq .faq-legend a{
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 15px 13px;
  font-size: 13.5px;
  color: var(--c-mist);
  text-decoration: none;
  transition: background .2s var(--ease), color .2s var(--ease);
}
.page-faq .faq-legend a:hover{
  background: rgba(34, 230, 210, .08);
  color: var(--c-paper);
}
.page-faq .faq-legend .mono{
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--c-orange);
}

/* ---------- 主体两段式 ---------- */
.page-faq .faq-body{
  display: grid;
  gap: var(--faq-gap);
  padding-top: clamp(32px, 5vw, 62px);
}
.page-faq .faq-aside{display: none;}
.page-faq .faq-content{min-width: 0;}

.page-faq .toc{
  border-top: 1px solid var(--line-signal);
  padding-top: 14px;
}
.page-faq .toc__title{
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--c-steel);
}
.page-faq .toc__list{
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}
.page-faq .toc__link{
  display: block;
  padding: 8px 10px;
  font-size: 13px;
  line-height: 1.5;
  color: var(--c-mist);
  text-decoration: none;
  border-left: 2px solid transparent;
  border-radius: 0 var(--faq-radius) var(--faq-radius) 0;
  transition: color .2s var(--ease), border-color .2s var(--ease), background .2s var(--ease);
}
.page-faq .toc__link:hover{
  color: var(--c-paper);
  background: rgba(34, 230, 210, .06);
}
.page-faq .toc__link.is-current{
  color: var(--c-cyan);
  border-left-color: var(--c-cyan);
  background: rgba(34, 230, 210, .09);
}

/* ---------- 章节 ---------- */
.page-faq .faq-section{
  padding-top: clamp(28px, 4vw, 46px);
  margin-top: clamp(28px, 4vw, 46px);
  border-top: 1px solid var(--line-soft);
  scroll-margin-top: calc(var(--header-h) + 20px);
}
.page-faq .faq-section:first-child{
  margin-top: 0;
  padding-top: 0;
  border-top: 0;
}
.page-faq .faq-section__head{
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 14px;
}
.page-faq .faq-section__num{
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--c-orange);
}
.page-faq .faq-section__head h2{
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(21px, 3.6vw, 30px);
  line-height: 1.18;
  letter-spacing: -.01em;
  color: var(--c-paper);
}
.page-faq .faq-text{
  margin: 0 0 14px;
  max-width: 70ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--c-mist);
}
.page-faq .faq-text--after{margin-top: 18px;}

/* ---------- 步骤路径 ---------- */
.page-faq .faq-steps{
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  counter-reset: step;
}
.page-faq .faq-steps > li{
  display: grid;
  grid-template-columns: 36px minmax(0, 1fr);
  gap: 4px 14px;
  padding: 16px 0;
  border-top: 1px solid var(--line-soft);
}
.page-faq .faq-steps > li:first-child{border-top: 1px solid var(--line-signal);}
.page-faq .faq-steps > li::before{
  counter-increment: step;
  content: "0" counter(step);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  line-height: 1.7;
  color: var(--c-orange);
}
.page-faq .faq-step__title{
  margin: 0;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.7;
  color: var(--c-paper);
}
.page-faq .faq-step__text{
  grid-column: 2;
  margin: 0;
  font-size: 14px;
  line-height: 1.82;
  color: var(--c-mist);
}
.page-faq .faq-tip{
  margin: 18px 0 0;
  padding: 12px 16px;
  border-left: 2px solid var(--c-cyan);
  border-radius: 0 var(--faq-radius) var(--faq-radius) 0;
  background: rgba(34, 230, 210, .06);
  font-size: 13.5px;
  line-height: 1.82;
  color: var(--c-paper);
}

/* ---------- 章节配图 ---------- */
.page-faq .faq-figure{
  margin: 18px 0 4px;
  border: 1px solid var(--line-soft);
  border-radius: var(--faq-radius);
  background: var(--c-night);
  overflow: hidden;
}
.page-faq .faq-figure img{
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}
.page-faq .faq-figure .media__caption{
  padding: 10px 14px;
  border-top: 1px solid var(--line-soft);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .05em;
  color: var(--c-steel);
}

/* ---------- 小卡片组 ---------- */
.page-faq .faq-cards{
  display: grid;
  gap: 12px;
  margin-top: 18px;
}
.page-faq .faq-mini{
  padding: 16px 18px;
  border: 1px solid var(--line-soft);
  border-top: 2px solid var(--c-ice);
  border-radius: var(--faq-radius);
  background: linear-gradient(180deg, rgba(11, 28, 47, .92), rgba(7, 19, 33, .55));
  box-shadow: var(--shadow-1);
}
.page-faq .faq-mini h3{
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 17px;
  letter-spacing: .01em;
  color: var(--c-paper);
}
.page-faq .faq-mini p{
  margin: 0;
  font-size: 13.5px;
  line-height: 1.82;
  color: var(--c-mist);
}

/* ---------- 折叠问答 ---------- */
.page-faq .faq-qa{
  margin-top: 18px;
  border-top: 1px solid var(--line-signal);
}
.page-faq .faq-qa details{
  border-bottom: 1px solid var(--line-soft);
  scroll-margin-top: calc(var(--header-h) + 20px);
}
.page-faq .faq-qa summary{
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 15px 0;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.7;
  color: var(--c-paper);
  cursor: pointer;
  list-style: none;
  transition: color .2s var(--ease);
}
.page-faq .faq-qa summary::-webkit-details-marker{display: none;}
.page-faq .faq-qa summary::after{
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 17px;
  line-height: 1;
  color: var(--c-cyan);
}
.page-faq .faq-qa details[open] summary{color: var(--c-cyan);}
.page-faq .faq-qa details[open] summary::after{content: "–";}
.page-faq .faq-qa details p{
  margin: 0 0 18px;
  padding-left: 0;
  max-width: 70ch;
  font-size: 14px;
  line-height: 1.85;
  color: var(--c-mist);
}

/* ---------- 联系信息条 ---------- */
.page-faq .faq-contact{
  display: grid;
  gap: 1px;
  margin-top: 20px;
  border: 1px solid var(--line-soft);
  background: var(--line-soft);
}
.page-faq .faq-contact__item{
  padding: 16px 18px;
  background: var(--c-night);
}
.page-faq .faq-contact__label{
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--c-steel);
}
.page-faq .faq-contact__value{
  margin: 0;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--c-paper);
  word-break: break-word;
}
.page-faq .faq-contact__value a{
  color: var(--c-cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--line-signal);
  transition: color .2s var(--ease), border-color .2s var(--ease);
}
.page-faq .faq-contact__value a:hover{
  color: var(--c-paper);
  border-bottom-color: var(--c-orange);
}
.page-faq .faq-top{
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 26px;
  padding-bottom: 3px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--c-steel);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  transition: color .2s var(--ease), border-color .2s var(--ease);
}
.page-faq .faq-top:hover{
  color: var(--c-cyan);
  border-bottom-color: var(--line-signal);
}

/* ---------- 平板 ---------- */
@media (min-width: 720px){
  .page-faq .faq-legend{grid-template-columns: repeat(3, minmax(0, 1fr));}
  .page-faq .faq-cards{grid-template-columns: repeat(3, minmax(0, 1fr));}
  .page-faq .faq-contact{grid-template-columns: repeat(2, minmax(0, 1fr));}
}

/* ---------- 桌面 ---------- */
@media (min-width: 900px){
  .page-faq .faq-hero__grid{
    grid-template-columns: 7fr 5fr;
    align-items: end;
  }
  .page-faq .faq-hero__figure{align-self: stretch;}
  .page-faq .faq-hero__figure img{height: 100%;}
  .page-faq .faq-steps > li{padding: 18px 0;}
}

@media (min-width: 1000px){
  .page-faq .faq-body{
    grid-template-columns: 236px minmax(0, 1fr);
    gap: clamp(30px, 4vw, 58px);
    align-items: start;
  }
  .page-faq .faq-aside{
    display: block;
    position: sticky;
    top: calc(var(--header-h) + 24px);
    align-self: start;
  }
}

@media (min-width: 1180px){
  .page-faq .faq-hero__grid{gap: clamp(36px, 4vw, 60px);}
}
<<<END>>>