.page-faq{
  --faq-line: rgba(10,15,44,.14);
  --faq-line-dark: rgba(231,223,203,.22);
  --faq-ink-soft: #2A3260;
  background: var(--ink-0);
  color: var(--mist);
  overflow-x: clip;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero{
  position: relative;
  padding: calc(var(--header-h) + 2.2rem) 0 2.6rem;
  background:
    radial-gradient(110% 85% at 4% -22%, rgba(43,75,216,.62), rgba(43,75,216,0) 58%),
    radial-gradient(72% 58% at 96% 2%, rgba(63,214,176,.20), rgba(63,214,176,0) 62%),
    var(--ink-0);
}

.page-faq .faq-hero__grid{
  display: grid;
  gap: 1.9rem;
}

.page-faq .faq-hero .breadcrumb{
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .5rem;
  font-family: var(--font-mono);
  font-size: .76rem;
  letter-spacing: .05em;
  color: var(--slate);
  margin-bottom: 1.4rem;
}

.page-faq .faq-hero .breadcrumb a{
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur-fast) var(--ease);
}

.page-faq .faq-hero .breadcrumb a:hover{
  border-bottom-color: var(--gold);
}

.page-faq .eyebrow{
  font-family: var(--font-mono);
  font-size: .76rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--mint);
  margin: 0 0 .9rem;
}

.page-faq .section--light .eyebrow,
.page-faq .faq-top .eyebrow{
  color: var(--mint-deep);
}

.page-faq .faq-hero h1{
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.05rem, 7.4vw, 4.1rem);
  line-height: 1.08;
  letter-spacing: -.02em;
  color: var(--paper);
  margin: 0 0 1.1rem;
}

.page-faq .faq-hero .lede{
  max-width: 34rem;
  font-size: 1rem;
  line-height: 1.85;
  color: rgba(242,245,252,.84);
  margin: 0 0 1.5rem;
}

.page-faq .faq-hero__actions{
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
  margin-bottom: 1.2rem;
}

.page-faq .faq-hero .btn{
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  padding: .7rem 1.4rem;
}

.page-faq .faq-hero__note{
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .04em;
  line-height: 1.8;
  color: var(--slate);
  margin: 0;
}

.page-faq .faq-hero__figure{
  margin: 0;
}

.page-faq .faq-hero__figure img{
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1400 / 520;
  object-fit: cover;
  clip-path: var(--cut);
  border: 1px solid var(--hairline);
}

.page-faq .media-frame__caption{
  display: block;
  margin-top: .6rem;
  font-family: var(--font-mono);
  font-size: .72rem;
  line-height: 1.7;
  color: var(--slate);
}

/* ---------- 三条高频 ---------- */
.page-faq .faq-top{
  background: var(--mist);
  color: var(--ink-0);
  padding: 3rem 0 3.6rem;
}

.page-faq .faq-section-head{
  max-width: 42rem;
}

.page-faq .faq-section-head h2{
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.55rem, 4.6vw, 2.5rem);
  line-height: 1.15;
  letter-spacing: -.01em;
  color: var(--ink-0);
  margin: 0 0 .8rem;
}

.page-faq .faq-section-head p{
  font-size: .96rem;
  line-height: 1.85;
  color: #3A4272;
  margin: 0;
}

.page-faq .faq-top__grid{
  display: grid;
  gap: 1.15rem;
  margin-top: 2rem;
}

.page-faq .faq-card{
  background: var(--paper);
  color: var(--ink-0);
  padding: 1.7rem 1.4rem 1.5rem;
  clip-path: var(--cut);
  box-shadow: 0 22px 44px -38px rgba(10,15,44,.95);
  border-top: 3px solid var(--cobalt);
}

.page-faq .faq-card:nth-child(2){
  border-top-color: var(--mint);
}

.page-faq .faq-card:nth-child(3){
  border-top-color: var(--coral);
}

.page-faq .faq-card__num{
  font-family: var(--font-mono);
  font-size: .76rem;
  letter-spacing: .2em;
  color: var(--mint-deep);
}

.page-faq .faq-card h3{
  font-family: var(--font-body);
  font-weight: 800;
  font-size: 1.1rem;
  line-height: 1.55;
  color: var(--ink-0);
  margin: .55rem 0 .7rem;
}

.page-faq .faq-card p{
  font-size: .93rem;
  line-height: 1.85;
  color: #3A4272;
  margin: 0;
}

/* ---------- 问答区 ---------- */
.page-faq .faq-groups{
  background: var(--mist);
  color: var(--ink-0);
  padding: 1rem 0 3.5rem;
}

.page-faq .faq-layout{
  display: grid;
  gap: 1.75rem;
}

.page-faq .faq-group{
  margin-bottom: 2.6rem;
}

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

.page-faq .faq-group__head{
  position: relative;
  isolation: isolate;
  padding: .95rem 1.15rem .95rem 3.5rem;
  margin-bottom: 1rem;
}

.page-faq .faq-group__head::before{
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, var(--cobalt), #182057 84%);
  transform: skewX(var(--skew));
  z-index: -1;
}

.page-faq .faq-group__letter{
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  width: 1.85rem;
  height: 1.85rem;
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-size: .9rem;
  font-weight: 700;
  color: var(--ink-0);
  background: var(--gold);
  clip-path: var(--cut-sm);
}

.page-faq .faq-group__head h2{
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.15rem, 3.6vw, 1.5rem);
  line-height: 1.25;
  letter-spacing: -.01em;
  color: var(--paper);
  margin: 0;
}

.page-faq .faq-group__sub{
  font-size: .84rem;
  line-height: 1.7;
  color: rgba(242,245,252,.76);
  margin: .3rem 0 0;
}

.page-faq .faq-list{
  background: var(--paper);
  padding: .35rem 1rem;
  clip-path: var(--cut);
  box-shadow: 0 22px 44px -40px rgba(10,15,44,.95);
}

.page-faq .faq-item{
  border-bottom: 1px solid var(--faq-line);
  border-left: 3px solid transparent;
  padding-left: .85rem;
  transition: border-color var(--dur) var(--ease);
}

.page-faq .faq-item:last-child{
  border-bottom: 0;
}

.page-faq .faq-item[open]{
  border-left-color: var(--mint);
}

.page-faq .faq-item > summary{
  list-style: none;
  cursor: pointer;
  position: relative;
  display: flex;
  align-items: baseline;
  gap: .65rem;
  min-height: 44px;
  padding: 1.05rem 2.3rem 1.05rem 0;
  font-size: .98rem;
  font-weight: 700;
  line-height: 1.6;
  color: var(--ink-0);
}

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

.page-faq .faq-item > summary::marker{
  content: "";
}

.page-faq .faq-item > summary::after{
  content: "+";
  position: absolute;
  right: .1rem;
  top: 50%;
  transform: translateY(-50%);
  width: 1.6rem;
  height: 1.6rem;
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-size: 1.05rem;
  color: var(--cobalt);
}

.page-faq .faq-item[open] > summary::after{
  content: "−";
  color: var(--mint-deep);
}

.page-faq .faq-item__num{
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .06em;
  color: var(--mint-deep);
  padding-top: .2rem;
}

.page-faq .faq-answer{
  padding: 0 2.3rem 1.15rem 0;
  font-size: .93rem;
  line-height: 1.85;
  color: var(--faq-ink-soft);
}

.page-faq .faq-answer p{
  margin: 0 0 .55rem;
}

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

.page-faq .faq-answer a{
  color: var(--cobalt);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-split{
  display: grid;
  gap: 1.2rem;
}

.page-faq .faq-figure{
  margin: 0;
}

.page-faq .faq-figure img{
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  clip-path: var(--cut-sm);
}

.page-faq .faq-figure .media-frame__caption{
  color: #4A5385;
}

/* ---------- 组内索引 ---------- */
.page-faq .faq-toc{
  order: -1;
  background: rgba(255,255,255,.72);
  border: 1px solid var(--faq-line);
  clip-path: var(--cut-sm);
  padding: .85rem .95rem;
}

.page-faq .faq-toc__title{
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .2em;
  color: #5A6291;
  margin: 0 0 .55rem;
}

.page-faq .faq-toc__nav{
  display: flex;
  gap: .5rem;
  overflow-x: auto;
  overscroll-behavior-x: contain;
  padding-bottom: .3rem;
}

.page-faq .toc-link{
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  gap: .45rem;
  min-height: 44px;
  padding: .45rem .85rem;
  font-size: .84rem;
  line-height: 1.4;
  color: var(--faq-ink-soft);
  text-decoration: none;
  background: rgba(43,75,216,.08);
  clip-path: var(--cut-sm);
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-faq .toc-link span{
  font-family: var(--font-mono);
  font-size: .72rem;
  color: var(--mint-deep);
}

.page-faq .toc-link[aria-current]{
  background: linear-gradient(90deg, var(--gold), rgba(255,194,74,.35));
  color: var(--ink-0);
  font-weight: 700;
}

.page-faq .faq-toc__note{
  display: none;
  font-family: var(--font-mono);
  font-size: .7rem;
  line-height: 1.8;
  color: #5A6291;
  margin: 1rem 0 0;
}

/* ---------- E 写信求助 ---------- */
.page-faq .faq-help{
  position: relative;
  background:
    radial-gradient(88% 70% at 88% -6%, rgba(255,107,74,.20), rgba(255,107,74,0) 60%),
    radial-gradient(70% 60% at 4% 106%, rgba(43,75,216,.45), rgba(43,75,216,0) 62%),
    var(--ink-0);
  color: var(--mist);
  padding: 3.2rem 0 4rem;
}

.page-faq .faq-help__grid{
  display: grid;
  gap: 2rem;
}

.page-faq .faq-help h2{
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.55rem, 5vw, 2.6rem);
  line-height: 1.14;
  letter-spacing: -.015em;
  color: var(--paper);
  margin: 0 0 1rem;
}

.page-faq .faq-help__lede{
  max-width: 36rem;
  font-size: .98rem;
  line-height: 1.85;
  color: rgba(242,245,252,.82);
  margin: 0 0 1.6rem;
}

.page-faq .faq-rules{
  list-style: none;
  margin: 0 0 1.4rem;
  padding: 0;
  max-width: 40rem;
}

.page-faq .faq-rules .rule-item{
  display: flex;
  align-items: baseline;
  gap: 1rem;
  padding: .82rem 0;
  border-bottom: 1px solid var(--faq-line-dark);
  font-size: .93rem;
  line-height: 1.7;
  color: rgba(242,245,252,.88);
}

.page-faq .faq-rules .rule-item:first-child{
  border-top: 1px solid var(--faq-line-dark);
}

.page-faq .faq-rules .rule-item__num{
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .08em;
  color: var(--mint);
}

.page-faq .faq-help__fine{
  max-width: 36rem;
  font-size: .84rem;
  line-height: 1.85;
  color: var(--slate);
  margin: 0;
}

.page-faq .faq-help__fine a{
  color: var(--mist);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-contact{
  background: var(--ink-1);
  border: 1px solid var(--faq-line-dark);
  clip-path: var(--cut);
  padding: 1.6rem 1.4rem;
}

.page-faq .faq-contact__label{
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .18em;
  color: var(--slate);
  margin: 0 0 .35rem;
}

.page-faq .faq-contact__mail,
.page-faq .faq-contact__phone{
  font-family: var(--font-mono);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--paper);
  margin: 0 0 .8rem;
  word-break: break-all;
}

.page-faq .faq-contact__rule{
  border: 0;
  border-top: 1px solid var(--faq-line-dark);
  margin: 1.1rem 0;
}

.page-faq .faq-contact__note{
  font-size: .84rem;
  line-height: 1.8;
  color: rgba(242,245,252,.74);
  margin: .2rem 0 1.1rem;
}

.page-faq .copy-mail{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  min-height: 44px;
  padding: .6rem 1.1rem;
  border: 0;
  background: rgba(63,214,176,.16);
  color: var(--mint);
  font-family: var(--font-body);
  font-size: .86rem;
  font-weight: 700;
  cursor: pointer;
  clip-path: var(--cut-sm);
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-faq .copy-mail:hover{
  background: rgba(63,214,176,.28);
}

.page-faq .copy-mail.is-copied{
  background: var(--mint);
  color: var(--ink-0);
}

.page-faq .faq-contact__cta{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: .7rem 1.4rem;
}

/* ---------- 平板与桌面 ---------- */
@media (min-width: 720px){
  .page-faq .faq-hero{
    padding: calc(var(--header-h) + 3rem) 0 3.2rem;
  }

  .page-faq .faq-top{
    padding: 3.6rem 0 4.2rem;
  }

  .page-faq .faq-top__grid{
    grid-template-columns: repeat(3, minmax(0,1fr));
    gap: 1.35rem;
  }

  .page-faq .faq-card:nth-child(2){
    margin-top: 48px;
  }

  .page-faq .faq-list{
    padding: .45rem 1.4rem;
  }

  .page-faq .faq-help__grid{
    grid-template-columns: minmax(0,1.2fr) minmax(0,.8fr);
    gap: 2.5rem;
    align-items: start;
  }
}

@media (min-width: 980px){
  .page-faq .faq-hero__grid{
    grid-template-columns: minmax(0,7fr) minmax(0,5fr);
    gap: 3rem;
    align-items: end;
  }

  .page-faq .faq-hero .lede{
    font-size: 1.05rem;
  }

  .page-faq .faq-group__head{
    padding: 1.05rem 1.5rem 1.05rem 3.9rem;
  }

  .page-faq .faq-group__letter{
    left: 1.25rem;
  }
}

@media (min-width: 1000px){
  .page-faq .faq-layout{
    grid-template-columns: minmax(0,1fr) 236px;
    gap: 3.5rem;
    align-items: start;
  }

  .page-faq .faq-toc{
    order: 0;
    position: sticky;
    top: calc(var(--header-h) + 1.6rem);
    background: transparent;
    border: 0;
    border-left: 1px solid var(--faq-line);
    clip-path: none;
    padding: .2rem 0 .2rem 1.1rem;
  }

  .page-faq .faq-toc__nav{
    display: block;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .toc-link{
    background: transparent;
    clip-path: none;
    min-height: 0;
    padding: .5rem 0;
    color: #4A5385;
  }

  .page-faq .toc-link + .toc-link{
    border-top: 1px solid var(--faq-line);
  }

  .page-faq .toc-link[aria-current]{
    background: linear-gradient(90deg, rgba(255,194,74,.9), rgba(255,194,74,0));
    color: var(--ink-0);
    padding-left: .6rem;
  }

  .page-faq .faq-toc__note{
    display: block;
  }
}

@media (min-width: 1120px){
  .page-faq .faq-split{
    grid-template-columns: minmax(0,1fr) 300px;
    gap: 1.5rem;
    align-items: start;
  }
}

@media (prefers-reduced-motion: reduce){
  .page-faq *,
  .page-faq *::before,
  .page-faq *::after{
    transition-duration: .01ms !important;
    animation-duration: .01ms !important;
  }
}