.page-faq {
  --faq-sticky: calc(var(--header-stack) + 18px);
  --faq-pad: clamp(15px, 2.2vw, 24px);
  --faq-panel: var(--ink-2);
  --faq-panel-open: var(--ink-3);
  display: block;
  padding-bottom: clamp(52px, 8vw, 100px);
  background:
    radial-gradient(1100px 420px at 88% -6%, rgba(0, 240, 192, .10), transparent 64%),
    radial-gradient(760px 340px at 2% 8%, rgba(255, 106, 26, .06), transparent 70%),
    var(--ink);
  color: var(--body-text);
  overflow-wrap: break-word;
}

.page-faq .faq-hero {
  padding-top: clamp(20px, 3vw, 34px);
}

.page-faq .breadcrumb {
  margin-bottom: clamp(18px, 2.8vw, 28px);
}

.page-faq .faq-hero__title {
  margin: 14px 0 0;
  max-width: 780px;
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: clamp(28px, 5.2vw, 58px);
  line-height: 1.08;
  letter-spacing: -.02em;
  color: var(--warm);
}

.page-faq .faq-hero__lead {
  margin: clamp(16px, 2.2vw, 24px) 0 0;
  max-width: 64ch;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.8;
  color: var(--body-text);
}

.page-faq .faq-hero__media {
  margin: clamp(22px, 3.6vw, 40px) 0 0;
}

.page-faq .faq-layout {
  display: grid;
  gap: clamp(26px, 3.4vw, 46px);
  margin-top: clamp(30px, 4.6vw, 56px);
}

.page-faq .faq-main {
  min-width: 0;
}

.page-faq .faq-tools {
  padding-bottom: 14px;
  margin-bottom: clamp(20px, 2.6vw, 30px);
  border-bottom: 1px solid var(--line-faint);
}

.page-faq .faq-tools__label {
  margin: 0 0 10px;
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-faq .faq-group {
  margin-top: clamp(28px, 4vw, 48px);
  scroll-margin-top: calc(var(--header-stack) + 22px);
}

.page-faq .faq-group:first-of-type {
  margin-top: 0;
}

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 10px;
}

.page-faq .faq-group__head::after {
  content: "";
  flex: 1 1 auto;
  height: 1px;
  align-self: center;
  background: var(--line-faint);
}

.page-faq .faq-group__num {
  flex: 0 0 auto;
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--cyan);
}

.page-faq .faq-group__title {
  margin: 0;
  flex: 0 0 auto;
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: clamp(19px, 2.3vw, 26px);
  line-height: 1.2;
  letter-spacing: -.01em;
  color: var(--warm);
}

.page-faq .faq-group__desc {
  margin: 0 0 16px;
  max-width: 58ch;
  font-size: 14px;
  line-height: 1.72;
  color: var(--mist);
}

.page-faq .faq-item {
  background: var(--faq-panel);
  border: 1px solid var(--line-faint);
  border-left: 2px solid transparent;
  transition: background .18s var(--ease), border-color .18s var(--ease);
}

.page-faq .faq-item + .faq-item {
  margin-top: 8px;
}

.page-faq .faq-item[open] {
  background: var(--faq-panel-open);
  border-color: rgba(0, 240, 192, .30);
  border-left-color: var(--cyan);
}

.page-faq .faq-item > summary {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 15px var(--faq-pad) 16px;
  margin: 0;
  list-style: none;
  cursor: pointer;
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: clamp(15px, 1.5vw, 18px);
  line-height: 1.45;
  letter-spacing: -.005em;
  color: var(--warm);
  transition: color .16s var(--ease);
}

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

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

.page-faq .faq-item > summary:hover {
  color: var(--cyan);
}

.page-faq .faq-item > summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -2px;
}

.page-faq .faq-item__mark {
  position: relative;
  flex: 0 0 auto;
  margin-left: auto;
  width: 13px;
  height: 13px;
}

.page-faq .faq-item__mark::before,
.page-faq .faq-item__mark::after {
  content: "";
  position: absolute;
  background: var(--cyan);
  transition: transform .2s var(--ease), opacity .2s var(--ease);
}

.page-faq .faq-item__mark::before {
  left: 0;
  top: 50%;
  width: 13px;
  height: 2px;
  transform: translateY(-50%);
}

.page-faq .faq-item__mark::after {
  top: 0;
  left: 50%;
  width: 2px;
  height: 13px;
  transform: translateX(-50%);
}

.page-faq .faq-item[open] .faq-item__mark::after {
  transform: translateX(-50%) scaleY(0);
  opacity: 0;
}

.page-faq .faq-item__a {
  margin: 0 var(--faq-pad) 18px;
  padding-top: 14px;
  border-top: 1px solid rgba(0, 240, 192, .16);
  font-size: 15px;
  line-height: 1.8;
  color: var(--body-text);
}

.page-faq .faq-item__a p {
  margin: 0;
}

.page-faq .faq-item__a p + p {
  margin-top: 10px;
}

.page-faq .faq-item__a a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 240, 192, .45);
}

.page-faq .faq-item__a a:hover,
.page-faq .faq-item__a a:focus-visible {
  border-bottom-color: var(--cyan);
  color: var(--warm);
}

.page-faq .faq-figure {
  margin: 0 0 18px;
  max-width: 520px;
}

.page-faq .faq-toc {
  padding-top: 16px;
  border-top: 1px solid var(--line-faint);
}

.page-faq .faq-toc__title {
  margin: 0 0 14px;
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-faq .faq-toc__list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-toc__list a {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-left: -1px;
  padding: 11px 0 11px 16px;
  border-left: 1px solid var(--line-faint);
  font-size: 14px;
  color: var(--body-text);
  text-decoration: none;
  transition: border-color .18s var(--ease), color .18s var(--ease);
}

.page-faq .faq-toc__list a:hover,
.page-faq .faq-toc__list a:focus-visible {
  border-left-color: var(--cyan);
  color: var(--warm);
}

.page-faq .faq-toc__num {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--cyan);
}

.page-faq .faq-toc__note {
  margin: 16px 0 0;
  font-size: 12px;
  line-height: 1.7;
  color: var(--mist);
}

.page-faq .faq-help {
  margin-top: clamp(40px, 6vw, 76px);
  padding: clamp(22px, 3.6vw, 42px);
  background: linear-gradient(120deg, var(--ink-2) 0%, var(--ink-2) 48%, rgba(20, 69, 58, .72) 100%);
  border: 1px solid var(--line-soft);
  border-left: 2px solid var(--orange);
}

.page-faq .faq-help__kicker {
  margin: 0 0 10px;
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--orange);
}

.page-faq .faq-help__title {
  margin: 0;
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: clamp(20px, 2.6vw, 30px);
  line-height: 1.24;
  letter-spacing: -.015em;
  color: var(--warm);
}

.page-faq .faq-help__text {
  margin: 14px 0 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--body-text);
}

.page-faq .faq-help__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

@media (min-width: 1000px) {
  .page-faq .faq-layout {
    grid-template-columns: minmax(0, 1fr) 272px;
    align-items: start;
  }

  .page-faq .faq-toc {
    position: sticky;
    top: var(--faq-sticky);
    border-top: 0;
    border-left: 1px solid var(--line-faint);
    padding: 4px 0 4px 20px;
  }

  .page-faq .faq-toc__list a {
    margin-left: -21px;
    padding-left: 20px;
  }
}

@media (max-width: 999px) {
  .page-faq .faq-toc {
    margin-top: 8px;
  }

  .page-faq .faq-toc__list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0 16px;
  }

  .page-faq .faq-toc__list a {
    padding: 9px 0;
    border-left: 0;
    border-bottom: 1px solid var(--line-faint);
    margin-left: 0;
  }

  .page-faq .faq-toc__list a:hover,
  .page-faq .faq-toc__list a:focus-visible {
    border-left-color: transparent;
    border-bottom-color: var(--cyan);
  }
}

@media (max-width: 560px) {
  .page-faq .faq-hero__title {
    font-size: clamp(24px, 7.6vw, 34px);
  }

  .page-faq .faq-item > summary {
    align-items: flex-start;
    gap: 10px;
  }

  .page-faq .faq-item__mark {
    margin-top: 6px;
  }

  .page-faq .faq-toc__list {
    grid-template-columns: 1fr;
  }

  .page-faq .faq-help__actions .btn {
    width: 100%;
    text-align: center;
  }

  .page-faq .faq-figure {
    max-width: 100%;
  }
}

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