.page-faq{
  --faq-pad: clamp(18px, 2.4vw, 28px);
  --faq-rail: 296px;
  --faq-scroll: calc(var(--header-h) + 24px);
  background: var(--ink);
  color: var(--mist);
}

/* ---------- hero ---------- */
.page-faq .faq-hero{
  position: relative;
  padding: clamp(22px, 3.2vw, 40px) 0 clamp(28px, 4vw, 56px);
  border-bottom: 1px solid var(--line-d);
  overflow: hidden;
}
.page-faq .faq-hero::before{
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    repeating-linear-gradient(0deg, rgba(111,133,121,.16) 0 1px, transparent 1px 56px),
    repeating-linear-gradient(90deg, rgba(111,133,121,.16) 0 1px, transparent 1px 56px);
  -webkit-mask-image: linear-gradient(180deg, rgba(0,0,0,.85), rgba(0,0,0,0) 88%);
  mask-image: linear-gradient(180deg, rgba(0,0,0,.85), rgba(0,0,0,0) 88%);
}
.page-faq .faq-hero .shell{
  position: relative;
  z-index: 1;
}
.page-faq .faq-hero__grid{
  display: grid;
  gap: clamp(16px, 2.4vw, 28px);
  margin-top: clamp(20px, 3vw, 38px);
}
.page-faq .faq-hero__title{
  margin: 14px 0 18px;
  font-size: clamp(36px, 7.4vw, 92px);
  line-height: .96;
  letter-spacing: -.02em;
  color: var(--mist);
}
.page-faq .faq-hero__text{
  max-width: 62ch;
  margin: 0;
  font-size: clamp(15px, 1.1vw, 17px);
  line-height: 1.78;
  color: var(--mist-dim);
}
.page-faq .faq-hero__aside{
  display: flex;
  align-items: flex-start;
  gap: 12px;
}
.page-faq .faq-hero__vlabel{
  writing-mode: vertical-rl;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .3em;
  color: var(--grid);
  border-left: 1px solid var(--line-d);
  padding-left: 10px;
}
.page-faq .faq-hero__vline{
  display: block;
  width: 2px;
  height: 76px;
  background: linear-gradient(180deg, var(--signal), rgba(0,196,106,0));
}

/* ---------- layout ---------- */
.page-faq .faq-body{
  padding: clamp(26px, 4vw, 56px) 0 clamp(40px, 6vw, 84px);
}
.page-faq .faq-layout{
  display: grid;
  gap: clamp(22px, 3vw, 40px);
  align-items: start;
}

/* ---------- rail ---------- */
.page-faq .faq-rail__inner{
  border: 1px solid var(--line-d);
  background: var(--ink2);
  padding: var(--faq-pad);
  display: flex;
  flex-direction: column;
  gap: 16px;
  box-shadow: 8px 8px 0 rgba(5,7,8,.55);
}
.page-faq .faq-nav{
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.page-faq .faq-nav__link{
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 10px 10px 10px 12px;
  border-left: 2px solid var(--line-d);
  color: var(--mist-dim);
  text-decoration: none;
  font-size: 14.5px;
  line-height: 1.4;
  transition: color .18s ease, border-color .18s ease, background-color .18s ease;
}
.page-faq .faq-nav__link:hover,
.page-faq .faq-nav__link:focus-visible,
.page-faq .faq-nav__link.is-active{
  color: var(--mist);
  border-left-color: var(--signal);
  background: rgba(0,196,106,.09);
}
.page-faq .faq-nav__no{
  font-size: 11.5px;
  color: var(--flash);
  letter-spacing: .04em;
}
.page-faq .faq-rail__divide{
  height: 1px;
  background: var(--line-d-soft);
}
.page-faq .faq-rail__links{
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.page-faq .faq-rail__link{
  color: var(--ice);
  text-decoration: none;
  font-size: 13.5px;
  line-height: 1.5;
  border-bottom: 1px solid transparent;
  padding-bottom: 1px;
  transition: border-color .18s ease, color .18s ease;
}
.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible{
  color: var(--mist);
  border-bottom-color: var(--ice);
}
.page-faq .faq-rail__card{
  border-top: 2px solid var(--flash);
  padding-top: 14px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.page-faq .faq-rail__cardtext{
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist-dim);
}

/* ---------- blocks ---------- */
.page-faq .faq-block{
  margin-bottom: clamp(30px, 4.4vw, 56px);
  scroll-margin-top: var(--faq-scroll);
}
.page-faq .faq-block:last-child{
  margin-bottom: 0;
}
.page-faq .faq-block__head{
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px 16px;
  align-items: start;
  padding-bottom: 14px;
  border-bottom: 2px solid var(--mist);
  margin-bottom: 0;
}
.page-faq .faq-block__no{
  display: block;
  font-size: clamp(26px, 3.6vw, 42px);
  line-height: 1;
  font-weight: 700;
  color: var(--signal);
}
.page-faq .faq-block__headtext .h2{
  margin: 0 0 8px;
  font-size: clamp(22px, 2.6vw, 32px);
  line-height: 1.15;
  color: var(--mist);
}
.page-faq .faq-block__sub{
  margin: 0;
  max-width: 56ch;
  font-size: 14px;
  line-height: 1.7;
  color: var(--mist-dim);
}

/* ---------- accordion ---------- */
.page-faq .faq-list{
  display: flex;
  flex-direction: column;
}
.page-faq .faq-item{
  background: var(--mist);
  color: var(--ink);
  border: 1px solid var(--line-l);
  border-top: none;
  border-left: 3px solid transparent;
  transition: border-color .18s ease, background-color .18s ease;
}
.page-faq .faq-item:first-child{
  border-top: 1px solid var(--line-l);
}
.page-faq .faq-item[open]{
  border-left-color: var(--signal);
  background: #ffffff;
}
.page-faq .faq-item__q{
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 12px;
  align-items: start;
  padding: 15px 16px;
  cursor: pointer;
  list-style: none;
  transition: background-color .18s ease;
}
.page-faq .faq-item__q::-webkit-details-marker{
  display: none;
}
.page-faq .faq-item__q:hover{
  background: rgba(0,196,106,.08);
}
.page-faq .faq-item__q:focus-visible{
  outline: 2px solid var(--signal);
  outline-offset: -2px;
}
.page-faq .faq-item__idx{
  font-size: 12px;
  line-height: 1.7;
  color: var(--field);
  font-weight: 600;
}
.page-faq .faq-item__t{
  font-size: 15.5px;
  line-height: 1.5;
  font-weight: 600;
  color: var(--ink);
}
.page-faq .faq-item__mark{
  position: relative;
  width: 14px;
  height: 14px;
  margin-top: 3px;
  flex: 0 0 14px;
}
.page-faq .faq-item__mark::before,
.page-faq .faq-item__mark::after{
  content: "";
  position: absolute;
  background: var(--field);
  transition: transform .2s ease, opacity .2s ease;
}
.page-faq .faq-item__mark::before{
  left: 0;
  top: 6px;
  width: 14px;
  height: 2px;
}
.page-faq .faq-item__mark::after{
  left: 6px;
  top: 0;
  width: 2px;
  height: 14px;
}
.page-faq .faq-item[open] .faq-item__mark::after{
  transform: scaleY(0);
  opacity: 0;
}
.page-faq .faq-item__a{
  padding: 0 16px 18px 16px;
  border-top: 1px solid var(--line-l-soft);
  margin-top: -1px;
  padding-top: 14px;
}
.page-faq .faq-item__a p{
  margin: 0 0 10px;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--ink-dim);
}
.page-faq .faq-item__a p:last-child{
  margin-bottom: 0;
}
.page-faq .faq-item__a .text-link{
  color: var(--field);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.page-faq .faq-item__a .text-link:hover{
  color: var(--signal);
}
.page-faq .faq-steps{
  list-style: none;
  counter-reset: faqstep;
  margin: 10px 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 7px;
}
.page-faq .faq-steps li{
  counter-increment: faqstep;
  position: relative;
  padding-left: 26px;
  font-size: 14px;
  line-height: 1.65;
  color: var(--ink-dim);
}
.page-faq .faq-steps li::before{
  content: counter(faqstep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 1px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 600;
  color: var(--field);
}

/* ---------- figures ---------- */
.page-faq .faq-figure{
  margin: clamp(18px, 2.4vw, 26px) 0 0;
  border: 1px solid var(--line-d);
  background: var(--ink2);
  overflow: hidden;
}
.page-faq .faq-figure img{
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}
.page-faq .faq-figure figcaption{
  padding: 12px 16px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  line-height: 1.7;
  letter-spacing: .02em;
  color: var(--mist-dim);
  border-top: 1px solid var(--line-d-soft);
}

/* ---------- responsive ---------- */
@media (min-width: 760px){
  .page-faq .faq-item__q{
    padding: 17px 20px;
    gap: 16px;
  }
  .page-faq .faq-item__a{
    padding: 16px 20px 20px 20px;
  }
  .page-faq .faq-item__t{
    font-size: 16px;
  }
}

@media (min-width: 900px){
  .page-faq .faq-hero__grid{
    grid-template-columns: minmax(0, 1fr) 96px;
    align-items: end;
  }
  .page-faq .faq-hero__aside{
    justify-content: flex-end;
  }
}

@media (min-width: 1000px){
  .page-faq .faq-layout{
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
    gap: clamp(28px, 3.4vw, 48px);
  }
  .page-faq .faq-rail__inner{
    position: sticky;
    top: var(--faq-scroll);
  }
  .page-faq .faq-block__head{
    grid-template-columns: 76px minmax(0, 1fr);
    gap: 16px 22px;
  }
}

@media (prefers-reduced-motion: reduce){
  .page-faq .faq-nav__link,
  .page-faq .faq-rail__link,
  .page-faq .faq-item,
  .page-faq .faq-item__q,
  .page-faq .faq-item__mark::before,
  .page-faq .faq-item__mark::after{
    transition: none;
  }
}
<<<END>>>