.page-faq{
  --faq-rule: var(--ink-700);
  background: var(--ink-950);
  color: var(--mist-300);
  font-family: var(--font-body);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero{
  position: relative;
  padding: clamp(26px,5vw,52px) 0 clamp(30px,5vw,58px);
  border-bottom: 1px solid var(--faq-rule);
  background:
    radial-gradient(110% 92% at 88% -6%, rgba(63,140,138,.20), transparent 62%),
    linear-gradient(180deg, var(--ink-850) 0%, var(--ink-950) 84%);
}
.page-faq .faq-hero::after{
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: min(420px, 60%);
  height: 1px;
  background: linear-gradient(90deg, var(--neon-500), rgba(255,106,42,0));
  opacity: .7;
  pointer-events: none;
}
.page-faq .faq-hero-grid{
  display: grid;
  gap: clamp(24px,3vw,40px);
  align-items: center;
}
.page-faq .faq-hero-copy{ min-width: 0; }
.page-faq .faq-hero-copy .eyebrow{ margin-bottom: 12px; }
.page-faq .faq-hero h1{
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(32px,4.6vw,54px);
  font-weight: 850;
  line-height: 1.1;
  letter-spacing: -.01em;
  color: var(--white);
}
.page-faq .faq-lead{
  margin: 18px 0 0;
  max-width: 58ch;
  font-size: 16px;
  line-height: 1.75;
  color: var(--mist-300);
}
.page-faq .faq-hero-tags{
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--dusk-300);
}
.page-faq .faq-hero-tags li{
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.page-faq .faq-hero-tags li + li::before{
  content: "/";
  color: var(--faq-rule);
  margin-right: 4px;
}
.page-faq .faq-hero-tags .mono{ color: var(--neon-500); }

.page-faq .faq-hero-figure{
  margin: 0;
  border: 1px solid var(--faq-rule);
  background: var(--ink-850);
  box-shadow: var(--shadow-soft);
  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-frame-caption{
  padding: 10px 14px;
  border-top: 1px solid var(--faq-rule);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .04em;
  color: var(--dusk-300);
}

/* ---------- 主体布局 ---------- */
.page-faq .faq-body{ padding-top: clamp(32px,5vw,60px); }
.page-faq .faq-layout{
  display: grid;
  gap: clamp(28px,4vw,44px);
}

/* ---------- 分类索引 ---------- */
.page-faq .faq-index{
  border: 1px solid var(--faq-rule);
  background: var(--ink-850);
  padding: 16px;
}
.page-faq .faq-index-title{
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--dusk-300);
}
.page-faq .faq-index-list{
  display: grid;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-faq .faq-index-link{
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 10px;
  border: 1px solid var(--faq-rule);
  background: var(--ink-950);
  color: var(--mist-300);
  text-decoration: none;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease), transform var(--dur) var(--ease), background-color var(--dur) var(--ease);
}
.page-faq .faq-index-link:hover,
.page-faq .faq-index-link:focus-visible{
  border-color: var(--neon-500);
  background: var(--ink-850);
  color: var(--white);
  transform: translateX(2px);
}
.page-faq .faq-index-num{
  flex: none;
  min-width: 2.2em;
  font-family: var(--font-mono);
  font-size: 19px;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px var(--dusk-500);
  transition: color var(--dur) var(--ease), -webkit-text-stroke-color var(--dur) var(--ease);
}
.page-faq .faq-index-link:hover .faq-index-num,
.page-faq .faq-index-link:focus-visible .faq-index-num{
  color: var(--neon-500);
  -webkit-text-stroke-color: var(--neon-500);
}
.page-faq .faq-index-label{
  flex: 1 1 auto;
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  line-height: 1.4;
}
.page-faq .faq-index-count{
  flex: none;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .04em;
  color: var(--dusk-300);
}
.page-faq .faq-index-note{
  margin: 14px 0 0;
  font-size: 13px;
  line-height: 1.65;
  color: var(--mist-300);
}
.page-faq .faq-index-note a{
  color: var(--dusk-300);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color var(--dur) var(--ease);
}
.page-faq .faq-index-note a:hover{ color: var(--neon-200); }

/* ---------- 问题列 ---------- */
.page-faq .faq-main{
  position: relative;
  min-width: 0;
}
.page-faq .faq-group{ scroll-margin-top: calc(var(--header-h) + 24px); }
.page-faq .faq-group + .faq-group{ margin-top: clamp(34px,4.5vw,54px); }
.page-faq .faq-group-head{
  position: relative;
  display: grid;
  grid-template-columns: auto minmax(0,1fr);
  column-gap: 12px;
  row-gap: 6px;
  align-items: baseline;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--faq-rule);
}
.page-faq .faq-group-head::after{
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 52px;
  height: 2px;
  background: var(--dusk-500);
  transition: background-color var(--dur) var(--ease), width var(--dur) var(--ease);
}
.page-faq .faq-group:target .faq-group-head::after{
  width: 104px;
  background: var(--neon-500);
}
.page-faq .faq-group-num{
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--dusk-300);
}
.page-faq .faq-group-title{
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(22px,2.8vw,30px);
  font-weight: 800;
  line-height: 1.2;
  color: var(--white);
}
.page-faq .faq-group-desc{
  grid-column: 2;
  margin: 0;
  font-size: 14px;
  line-height: 1.6;
  color: var(--mist-300);
}

.page-faq .faq-list{
  display: grid;
  gap: 10px;
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
}
.page-faq .faq-item{
  border: 1px solid var(--faq-rule);
  border-left: 3px solid var(--faq-rule);
  background: var(--ink-850);
  transition: border-color var(--dur) var(--ease), background-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.page-faq .faq-item:hover{ border-left-color: var(--dusk-500); }
.page-faq .faq-item[open]{
  border-left-color: var(--neon-500);
  background:
    linear-gradient(90deg, rgba(255,106,42,.07), rgba(255,106,42,0) 42%),
    var(--ink-850);
}
.page-faq .faq-item > summary{
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 14px;
  padding: 15px 16px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--cream-100);
  transition: color var(--dur) var(--ease);
}
.page-faq .faq-item > summary::-webkit-details-marker{ display: none; }
.page-faq .faq-item > summary::marker{ content: ""; }
.page-faq .faq-item > summary::after{
  content: "+";
  flex: none;
  margin-top: 1px;
  font-family: var(--font-mono);
  font-size: 19px;
  line-height: 1;
  color: var(--dusk-300);
  transition: color var(--dur) var(--ease);
}
.page-faq .faq-item[open] > summary{ color: var(--white); }
.page-faq .faq-item[open] > summary::after{
  content: "\2013";
  color: var(--neon-500);
}
.page-faq .faq-item > summary:focus-visible{
  outline: 2px solid var(--neon-200);
  outline-offset: -2px;
}
.page-faq .faq-item-body{
  max-width: 760px;
  margin: 0 16px 16px;
  padding-top: 13px;
  border-top: 1px solid var(--faq-rule);
  font-size: 15px;
  line-height: 1.75;
  color: var(--mist-300);
}
.page-faq .faq-item-body p{ margin: 0; }
.page-faq .faq-item-body p + p{ margin-top: 10px; }
.page-faq .faq-item-body a{
  color: var(--dusk-300);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color var(--dur) var(--ease);
}
.page-faq .faq-item-body a:hover,
.page-faq .faq-item-body a:focus-visible{ color: var(--neon-200); }
.page-faq .path{
  display: inline-block;
  margin-right: 8px;
  padding: 2px 7px;
  border: 1px solid var(--faq-rule);
  background: var(--ink-950);
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.6;
  letter-spacing: .02em;
  color: var(--dusk-300);
  white-space: nowrap;
}

/* ---------- 客户端配图 ---------- */
.page-faq .faq-client-figure{
  margin: 18px 0 0;
  border: 1px solid var(--faq-rule);
  background: var(--ink-850);
  overflow: hidden;
}
.page-faq .faq-client-figure img{
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}
.page-faq .faq-client-figure .media-frame-caption{
  padding: 9px 14px;
  border-top: 1px solid var(--faq-rule);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .04em;
  color: var(--dusk-300);
}

/* ---------- 尾部落款 ---------- */
.page-faq .faq-cta{
  margin-top: clamp(36px,4.5vw,56px);
  padding: clamp(20px,3vw,30px);
  border: 1px solid var(--cream-200);
  color: var(--ink-950);
}
.page-faq .faq-cta-title{
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(19px,2.2vw,23px);
  font-weight: 800;
  line-height: 1.3;
  color: var(--ink-950);
}
.page-faq .faq-cta-text{
  margin: 10px 0 0;
  max-width: 62ch;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-850);
}
.page-faq .faq-cta-links{
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 18px 0 0;
}
.page-faq .faq-cta-links .btn{
  text-decoration: none;
  display: inline-flex;
  align-items: center;
}

/* ---------- 桌面 ---------- */
@media (min-width: 900px){
  .page-faq .faq-hero-grid{
    grid-template-columns: minmax(0,1.12fr) minmax(0,.88fr);
  }
}
@media (min-width: 960px){
  .page-faq .faq-layout{
    grid-template-columns: 28% minmax(0,1fr);
    align-items: start;
  }
  .page-faq .faq-index{
    position: sticky;
    top: calc(var(--header-h) + 20px);
    border: 0;
    border-top: 1px solid var(--faq-rule);
    background: transparent;
    padding: 14px 0 0;
  }
  .page-faq .faq-index-link{
    background: transparent;
    border-color: transparent;
    border-left: 1px solid var(--faq-rule);
    padding: 8px 10px;
  }
  .page-faq .faq-index-link:hover,
  .page-faq .faq-index-link:focus-visible{
    border-color: transparent;
    border-left-color: var(--neon-500);
    background: var(--ink-850);
    transform: none;
  }
  .page-faq .faq-main::before{
    content: "";
    position: absolute;
    top: 4px;
    bottom: 4px;
    right: -14px;
    width: 1px;
    background: repeating-linear-gradient(
      to bottom,
      var(--faq-rule) 0 1px,
      transparent 1px 26px
    );
    opacity: .75;
    pointer-events: none;
  }
  .page-faq .faq-item > summary{ padding: 16px 20px; }
  .page-faq .faq-item-body{ margin: 0 20px 18px; }
}

@media (min-width: 1180px){
  .page-faq .faq-hero-grid{ gap: 56px; }
}

@media (prefers-reduced-motion: reduce){
  .page-faq .faq-index-link,
  .page-faq .faq-index-num,
  .page-faq .faq-item,
  .page-faq .faq-item > summary,
  .page-faq .faq-group-head::after{
    transition: none;
  }
  .page-faq .faq-index-link:hover,
  .page-faq .faq-index-link:focus-visible{ transform: none; }
}
<<<END>>>