.page-faq{
  --faq-rail: 14rem;
  --faq-line: rgba(34, 37, 34, .16);
  --faq-card: #FFFDF7;
  background: var(--mist);
  color: var(--ink);
  font-family: var(--font-body);
  overflow-x: hidden;
}

.page-faq .breadcrumb{
  padding-top: 1rem;
}

/* ---------- hero ---------- */
.page-faq .faq-hero{
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding-block: clamp(1.5rem, 5vw, 2.75rem) clamp(2.25rem, 6vw, 4rem);
  background: linear-gradient(158deg, var(--sand-paper) 0%, var(--sand-paper) 58%, #EADBBE 100%);
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .faq-hero::before{
  content: "";
  position: absolute;
  top: -7rem;
  right: -9rem;
  width: 26rem;
  height: 30rem;
  background: var(--moss);
  transform: rotate(9deg);
  opacity: .92;
  z-index: -1;
}

.page-faq .faq-hero__grid{
  display: grid;
  gap: clamp(1.5rem, 4vw, 2.5rem);
  align-items: end;
}

.page-faq .faq-hero h1{
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2rem, 7vw, 3.6rem);
  line-height: 1.02;
  letter-spacing: -.02em;
  margin: .4rem 0 1rem;
  color: var(--night);
  max-width: 22ch;
}

.page-faq .faq-hero__lede{
  margin: 0 0 1.35rem;
  max-width: 46ch;
  font-size: clamp(.95rem, 2.4vw, 1.05rem);
  line-height: 1.75;
  color: #33362F;
}

.page-faq .faq-hero__actions{
  display: flex;
  flex-wrap: wrap;
  gap: .6rem;
  margin-bottom: 1.5rem;
}

.page-faq .faq-hero__figure{
  margin: 0;
  border-left: 4px solid var(--track);
}

.page-faq .faq-hero__figure img{
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 4;
  object-fit: cover;
}

/* flow svg */
.page-faq .faq-flow{
  max-width: 34rem;
}

.page-faq .faq-flow svg{
  display: block;
  width: 100%;
  height: auto;
}

.page-faq .faq-flow__p{
  fill: none;
  stroke-width: 2.5;
  stroke-linecap: square;
}

.page-faq .faq-flow__p--net{ stroke: var(--sand); }
.page-faq .faq-flow__p--acc{ stroke: var(--moss); }
.page-faq .faq-flow__p--app{ stroke: var(--track); }

.page-faq .faq-flow__dot{ fill: var(--night); }

.page-faq .faq-flow__t{
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .08em;
  fill: var(--steel);
}

/* ---------- 判断卡 ---------- */
.page-faq .faq-keys{
  display: grid;
  gap: .85rem;
  margin-top: clamp(1.75rem, 5vw, 3rem);
  padding-bottom: 1.5rem;
}

.page-faq .faq-key{
  background: rgba(248, 245, 239, .88);
  border: 1px solid var(--faq-line);
  border-left: 4px solid var(--sand);
  padding: 1rem 1.1rem 1.15rem;
  display: grid;
  gap: .45rem;
  align-content: start;
}

.page-faq .faq-key:nth-child(2){ border-left-color: var(--moss); }
.page-faq .faq-key:nth-child(3){ border-left-color: var(--track); }

.page-faq .faq-key__no{
  margin: 0;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 1.6rem;
  line-height: 1;
  color: var(--steel);
}

.page-faq .faq-key__title{
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.2rem;
  line-height: 1.2;
  color: var(--night);
}

.page-faq .faq-key__text{
  margin: 0;
  font-size: .9rem;
  line-height: 1.65;
  color: #3A3D36;
}

.page-faq .faq-key__first{
  margin: 0;
  font-size: .88rem;
  line-height: 1.6;
  padding: .45rem .6rem;
  background: rgba(232, 184, 74, .22);
  border-left: 2px solid var(--warn);
}

.page-faq .faq-key__link{
  justify-self: start;
  margin-top: .2rem;
  font-size: .84rem;
  letter-spacing: .04em;
  color: var(--track);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
  padding-bottom: 2px;
}

.page-faq .faq-key__link:hover,
.page-faq .faq-key__link:focus-visible{
  color: var(--night);
}

/* ---------- .page-faq 布局 ---------- */
.page-faq .faq-body{
  display: grid;
  gap: clamp(1.25rem, 4vw, 2.75rem);
  padding-block: clamp(2rem, 5vw, 3.25rem) clamp(3rem, 7vw, 5rem);
}

.page-faq .faq-rail__list{
  list-style: none;
  margin: .6rem 0 0;
  padding: 0 0 .35rem;
  display: flex;
  gap: .5rem;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-faq .faq-rail__link{
  display: block;
  white-space: nowrap;
  padding: .4rem .7rem;
  font-size: .82rem;
  letter-spacing: .04em;
  color: var(--steel);
  text-decoration: none;
  border: 1px solid var(--faq-line);
  background: var(--faq-card);
}

.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible{
  color: var(--night);
  border-color: var(--steel);
}

.page-faq .faq-rail__link[data-active]{
  color: var(--mist);
  background: var(--moss);
  border-color: var(--moss);
}

/* ---------- section ---------- */
.page-faq .faq-section{
  padding-top: clamp(1.25rem, 3.5vw, 2rem);
  border-top: 2px solid var(--night);
}

.page-faq .faq-section + .faq-section{
  margin-top: clamp(2.25rem, 6vw, 3.75rem);
}

.page-faq .faq-section__title{
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.45rem, 4.2vw, 2.25rem);
  line-height: 1.14;
  letter-spacing: -.01em;
  margin: .35rem 0 .6rem;
  color: var(--night);
  max-width: 26ch;
}

.page-faq .faq-section__lede{
  margin: 0 0 1.4rem;
  max-width: 56ch;
  font-size: .96rem;
  line-height: 1.75;
  color: #3A3D36;
}

.page-faq .faq-section__foot{
  margin: 1.5rem 0 0;
  padding-top: .85rem;
  border-top: 1px dashed var(--faq-line);
  font-size: .86rem;
  line-height: 1.7;
  color: var(--steel);
}

.page-faq .faq-section__foot a{
  color: var(--track);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}

.page-faq .faq-section__foot a:hover,
.page-faq .faq-section__foot a:focus-visible{
  color: var(--night);
}

/* ---------- 图片 ---------- */
.page-faq .faq-netfigure{
  margin: 0 0 1.35rem;
  border-left: 4px solid var(--sand);
}

.page-faq .faq-netfigure img{
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

/* ---------- 步骤卡 ---------- */
.page-faq .faq-steps{
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .9rem;
}

.page-faq .faq-step{
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  column-gap: .9rem;
  row-gap: .35rem;
  background: var(--faq-card);
  border: 1px solid var(--faq-line);
  border-top: 3px solid var(--moss);
  padding: .95rem 1rem 1.1rem;
}

.page-faq .faq-step__no{
  grid-row: 1 / span 3;
  margin: 0;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 1.9rem;
  line-height: .95;
  color: var(--track);
}

.page-faq .faq-step__title{
  margin: 0;
  font-size: 1.02rem;
  font-weight: 700;
  line-height: 1.4;
  color: var(--night);
}

.page-faq .faq-step__text{
  margin: 0;
  font-size: .92rem;
  line-height: 1.65;
}

.page-faq .faq-step__result{
  margin: 0;
  font-size: .88rem;
  line-height: 1.6;
  padding: .5rem .65rem;
  background: rgba(31, 77, 59, .08);
  border-left: 3px solid var(--moss);
  color: #2B3B32;
}

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

.page-faq .faq-acc{
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .faq-acc summary{
  display: flex;
  align-items: baseline;
  gap: .7rem;
  padding: .9rem .2rem .9rem 0;
  cursor: pointer;
  font-weight: 700;
  font-size: .96rem;
  line-height: 1.5;
  color: var(--night);
  list-style: none;
}

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

.page-faq .faq-acc summary::after{
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 1.1rem;
  color: var(--track);
}

.page-faq .faq-acc[open] summary::after{ content: "–"; }

.page-faq .faq-acc summary:hover{ color: var(--moss); }

.page-faq .faq-acc__no{
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: .82rem;
  letter-spacing: .08em;
  color: var(--steel);
  min-width: 1.4rem;
}

.page-faq .faq-acc__body{
  padding: 0 0 .95rem 2.1rem;
  display: grid;
  gap: .45rem;
}

.page-faq .faq-acc__body p{
  margin: 0;
  font-size: .9rem;
  line-height: 1.72;
  color: #3A3D36;
}

.page-faq .faq-acc__step{
  padding-left: .7rem;
  border-left: 2px solid var(--warn);
}

/* ---------- 设备切换 ---------- */
.page-faq .faq-device{
  position: relative;
}

.page-faq .faq-device__input{
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  border: 0;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

.page-faq .faq-device__tabs{
  display: flex;
  flex-wrap: wrap;
  gap: .4rem;
  margin-bottom: 1rem;
}

.page-faq .faq-device__tab{
  cursor: pointer;
  padding: .45rem .85rem;
  font-size: .84rem;
  letter-spacing: .06em;
  color: var(--steel);
  background: var(--faq-card);
  border: 1px solid var(--faq-line);
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-faq .faq-device__tab:hover{ color: var(--night); border-color: var(--steel); }

.page-faq .faq-device__input:nth-of-type(1):checked ~ .faq-device__tabs .faq-device__tab:nth-child(1),
.page-faq .faq-device__input:nth-of-type(2):checked ~ .faq-device__tabs .faq-device__tab:nth-child(2),
.page-faq .faq-device__input:nth-of-type(3):checked ~ .faq-device__tabs .faq-device__tab:nth-child(3),
.page-faq .faq-device__input:nth-of-type(4):checked ~ .faq-device__tabs .faq-device__tab:nth-child(4){
  background: var(--moss);
  border-color: var(--moss);
  color: var(--mist);
}

.page-faq .faq-device__panel{
  display: none;
  border-top: 1px solid var(--faq-line);
  padding-top: .3rem;
}

.page-faq .faq-device__input:nth-of-type(1):checked ~ .faq-device__panels > .faq-device__panel:nth-child(1),
.page-faq .faq-device__input:nth-of-type(2):checked ~ .faq-device__panels > .faq-device__panel:nth-child(2),
.page-faq .faq-device__input:nth-of-type(3):checked ~ .faq-device__panels > .faq-device__panel:nth-child(3),
.page-faq .faq-device__input:nth-of-type(4):checked ~ .faq-device__panels > .faq-device__panel:nth-child(4){
  display: block;
}

/* ---------- 榜单 ---------- */
.page-faq .faq-board{
  display: grid;
  gap: .9rem;
}

.page-faq .faq-board__col{
  background: var(--faq-card);
  border: 1px solid var(--faq-line);
  border-left: 4px solid var(--sand);
  padding: 1rem 1.1rem 1.15rem;
}

.page-faq .faq-board__col--warn{
  border-left-color: var(--track);
  background: rgba(217, 75, 43, .05);
}

.page-faq .faq-board__title{
  margin: 0 0 .6rem;
  font-size: .98rem;
  font-weight: 700;
  letter-spacing: .02em;
  color: var(--night);
}

.page-faq .faq-board__list{
  margin: 0;
  padding-left: 1.15rem;
  display: grid;
  gap: .45rem;
  font-size: .9rem;
  line-height: 1.7;
  color: #3A3D36;
}

.page-faq .faq-board__list li::marker{
  color: var(--steel);
  font-family: var(--font-mono);
}

/* ---------- 兼容速查 ---------- */
.page-faq .faq-compat{
  margin: 0 0 1.5rem;
  display: grid;
  gap: 1px;
  background: var(--faq-line);
  border: 1px solid var(--faq-line);
}

.page-faq .faq-compat__item{
  background: var(--faq-card);
  padding: .75rem .9rem;
  display: grid;
  gap: .2rem;
}

.page-faq .faq-compat dt{
  font-family: var(--font-mono);
  font-size: .76rem;
  letter-spacing: .12em;
  color: var(--steel);
}

.page-faq .faq-compat dd{
  margin: 0;
  font-size: .92rem;
  line-height: 1.6;
  color: var(--ink);
}

/* ---------- 联系块 ---------- */
.page-faq .faq-contact{
  display: grid;
  gap: 1px;
  background: rgba(248, 245, 239, .18);
  border: 1px solid var(--night);
}

.page-faq .faq-contact__main,
.page-faq .faq-contact__side{
  background: var(--night);
  color: var(--mist);
  padding: clamp(1.1rem, 4vw, 1.6rem);
}

.page-faq .faq-contact__side{
  background: var(--moss);
}

.page-faq .faq-contact__title{
  margin: 0 0 .7rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.15rem;
  line-height: 1.3;
  color: var(--sand-paper);
}

.page-faq .faq-contact__list{
  margin: 0;
  padding-left: 1.2rem;
  display: grid;
  gap: .45rem;
  font-size: .9rem;
  line-height: 1.7;
  color: #E7E4DA;
}

.page-faq .faq-contact__list li::marker{
  color: var(--sand);
  font-family: var(--font-mono);
}

.page-faq .faq-contact__label{
  margin: .85rem 0 .1rem;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .14em;
  color: rgba(244, 231, 206, .62);
}

.page-faq .faq-contact__value{
  margin: 0;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: .95rem;
  letter-spacing: .02em;
  color: var(--sand-paper);
  word-break: break-word;
}

.page-faq .faq-contact__note{
  margin: .8rem 0 0;
  font-size: .84rem;
  line-height: 1.7;
  color: rgba(248, 245, 239, .78);
}

/* ---------- 响应式 ---------- */
@media (min-width: 48em){
  .page-faq .faq-hero__grid{
    grid-template-columns: minmax(0, 1.4fr) minmax(0, .6fr);
  }

  .page-faq .faq-keys{
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: stretch;
  }

  .page-faq .faq-key:nth-child(2){ transform: translateY(.7rem); }
  .page-faq .faq-key:nth-child(3){ transform: translateY(1.4rem); }

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

  .page-faq .faq-step{
    grid-template-columns: minmax(0, 1fr);
    grid-auto-rows: min-content;
  }

  .page-faq .faq-step__no{
    grid-row: auto;
    font-size: 2.4rem;
  }

  .page-faq .faq-compat{
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-board{
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-contact{
    grid-template-columns: minmax(0, 1.25fr) minmax(0, .75fr);
  }
}

@media (min-width: 62em){
  .page-faq .faq-body{
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-rail{
    position: sticky;
    top: 1.25rem;
  }

  .page-faq .faq-rail__list{
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-rail__link{
    border: 0;
    border-bottom: 1px solid var(--faq-line);
    background: transparent;
    padding: .55rem .1rem;
    white-space: normal;
  }

  .page-faq .faq-rail__link[data-active]{
    background: transparent;
    color: var(--night);
    font-weight: 700;
    box-shadow: inset 3px 0 0 var(--track);
    padding-left: .75rem;
  }

  .page-faq .faq-hero__figure img{
    aspect-ratio: 3 / 4;
  }
}

@media (prefers-reduced-motion: reduce){
  .page-faq .faq-key:nth-child(2),
  .page-faq .faq-key:nth-child(3){
    transform: none;
  }

  .page-faq .faq-device__tab{
    transition: none;
  }
}
<<<END>>>