.page-faq {
  --faq-hair: rgba(159, 179, 200, .22);
  --faq-hair-strong: rgba(159, 179, 200, .42);
  --faq-panel: rgba(30, 58, 95, .30);
  --faq-accent: var(--cyan);
  --faq-alert: var(--orange);
  --faq-pad: 18px;
  background-color: var(--navy);
  color: var(--ice);
  overflow-x: hidden;
  padding-bottom: 8px;
}

.page-faq [id] {
  scroll-margin-top: 96px;
}

.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: 28px 0 40px;
  border-bottom: 1px solid var(--faq-hair);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -140px;
  right: -160px;
  width: 520px;
  height: 480px;
  background: linear-gradient(135deg, rgba(0, 229, 255, .16), rgba(0, 229, 255, 0) 62%);
  clip-path: polygon(30% 0, 100% 0, 100% 100%, 0 76%);
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 1px;
  background-image: linear-gradient(90deg, var(--cyan) 0 90px, transparent 90px);
  opacity: .7;
}

.page-faq .faq-hero__inner {
  position: relative;
  display: grid;
  gap: 28px;
}

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

.page-faq .faq-hero h1 {
  margin: 12px 0 0;
  font-size: clamp(30px, 6.4vw, 54px);
  line-height: 1.14;
  letter-spacing: -.02em;
  font-weight: 800;
  color: var(--ice);
}

.page-faq .faq-hero .lede {
  margin: 18px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(232, 244, 255, .82);
  max-width: 44em;
}

.page-faq .faq-hero__stats {
  list-style: none;
  margin: 26px 0 0;
  padding: 18px 0 0;
  border-top: 1px solid var(--faq-hair);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px 18px;
}

.page-faq .faq-hero__stats li {
  min-width: 0;
  display: grid;
  gap: 4px;
}

.page-faq .faq-hero__num {
  font-family: var(--font-mono);
  font-size: 26px;
  line-height: 1.1;
  color: var(--cyan);
  letter-spacing: -.02em;
}

.page-faq .faq-hero__unit {
  font-size: 13px;
  margin-left: 3px;
  color: var(--mist);
}

.page-faq .faq-hero__lab {
  font-size: 12px;
  line-height: 1.5;
  color: var(--mist);
}

.page-faq .faq-hero__figure {
  position: relative;
  margin: 0;
  min-width: 0;
}

.page-faq .faq-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--faq-hair);
  background: var(--ink);
}

.page-faq .faq-hero__figure .annotation {
  display: block;
  margin-top: 10px;
  font-size: 12px;
  color: var(--mist);
  font-family: var(--font-mono);
  letter-spacing: .02em;
}

.page-faq .faq-index {
  padding: 44px 0 40px;
  border-bottom: 1px solid var(--faq-hair);
}

.page-faq .faq-index__head {
  display: grid;
  gap: 20px;
  margin-bottom: 26px;
}

.page-faq .faq-index__title {
  margin: 8px 0 0;
  font-size: 26px;
  line-height: 1.3;
  letter-spacing: -.01em;
  font-weight: 800;
}

.page-faq .faq-search {
  display: grid;
  gap: 8px;
  min-width: 0;
}

.page-faq .faq-search__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--mist);
}

.page-faq .faq-search__field {
  width: 100%;
  min-width: 0;
  padding: 12px 14px;
  background: rgba(6, 20, 38, .72);
  border: 1px solid var(--faq-hair);
  border-radius: 0;
  color: var(--ice);
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.5;
  appearance: none;
}

.page-faq .faq-search__field::placeholder {
  color: rgba(159, 179, 200, .72);
}

.page-faq .faq-search__field:focus-visible {
  outline: none;
  border-color: var(--cyan);
  box-shadow: 0 0 0 3px var(--cyan-soft);
}

.page-faq .faq-search__hint {
  margin: 0;
  font-size: 12px;
  line-height: 1.6;
  color: var(--mist);
}

.page-faq .faq-index__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
}

.page-faq .faq-tile {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: baseline;
  gap: 4px 12px;
  padding: 16px var(--faq-pad);
  border: 1px solid var(--faq-hair);
  border-left: 2px solid var(--cyan);
  background: var(--faq-panel);
  color: inherit;
  text-decoration: none;
  transition: border-color .2s var(--ease), background-color .2s var(--ease), transform .2s var(--ease);
}

.page-faq .faq-tile--alert {
  border-left-color: var(--faq-alert);
}

.page-faq .faq-tile:hover,
.page-faq .faq-tile:focus-visible {
  border-color: var(--faq-hair-strong);
  border-left-color: var(--cyan);
  background: rgba(30, 58, 95, .48);
  transform: translateY(-2px);
}

.page-faq .faq-tile--alert:hover,
.page-faq .faq-tile--alert:focus-visible {
  border-left-color: var(--faq-alert);
}

.page-faq .faq-tile__no {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--mist);
}

.page-faq .faq-tile__name {
  font-size: 15px;
  font-weight: 700;
  line-height: 1.4;
}

.page-faq .faq-tile__desc {
  grid-column: 1 / -1;
  padding-left: 26px;
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--mist);
}

.page-faq .faq-body {
  display: grid;
  gap: 28px;
  padding-top: 36px;
}

.page-faq .faq-rail {
  border: 1px solid var(--faq-hair);
  background: rgba(6, 20, 38, .55);
  padding: 16px;
  min-width: 0;
}

.page-faq .faq-rail__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--mist);
}

.page-faq .faq-rail__list {
  list-style: none;
  margin: 0;
  padding: 0 0 4px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-rail__list li {
  flex: 0 0 auto;
}

.page-faq .faq-rail__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border: 1px solid var(--faq-hair);
  color: rgba(232, 244, 255, .86);
  text-decoration: none;
  font-size: 13px;
  line-height: 1.4;
  white-space: nowrap;
  transition: border-color .2s var(--ease), color .2s var(--ease), background-color .2s var(--ease);
}

.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  border-color: var(--cyan);
  color: var(--cyan);
  background: var(--cyan-soft);
}

.page-faq .faq-rail__link--alert:hover,
.page-faq .faq-rail__link--alert:focus-visible {
  border-color: var(--faq-alert);
  color: var(--faq-alert);
  background: rgba(255, 107, 53, .12);
}

.page-faq .faq-rail__no {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--mist);
}

.page-faq .faq-rail__note {
  display: none;
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--faq-hair);
  font-size: 12px;
  line-height: 1.7;
  color: var(--mist);
}

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

.page-faq .faq-group {
  --faq-accent: var(--cyan);
  padding-bottom: 32px;
  margin-bottom: 32px;
  border-bottom: 1px dashed var(--faq-hair);
}

.page-faq .faq-group--alert {
  --faq-accent: var(--faq-alert);
}

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

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding-left: 12px;
  border-left: 3px solid var(--faq-accent);
}

.page-faq .faq-group__no {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--faq-accent);
}

.page-faq .faq-group__title {
  margin: 0;
  font-size: 21px;
  line-height: 1.35;
  letter-spacing: -.01em;
  font-weight: 800;
  color: var(--ice);
}

.page-faq .faq-group__intro {
  margin: 10px 0 18px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--mist);
}

.page-faq .qa {
  border: 1px solid var(--faq-hair);
  background: rgba(6, 20, 38, .52);
  margin-bottom: 10px;
  transition: border-color .2s var(--ease), background-color .2s var(--ease);
}

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

.page-faq .qa[open] {
  border-color: rgba(0, 229, 255, .40);
  background: rgba(11, 30, 58, .78);
}

.page-faq .qa--alert[open] {
  border-color: rgba(255, 107, 53, .44);
}

.page-faq .qa__q {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: start;
  gap: 12px;
  padding: 15px 16px;
  cursor: pointer;
  list-style: none;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.55;
  color: var(--ice);
}

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

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

.page-faq .qa__no {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--faq-accent);
  padding-top: 5px;
}

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

.page-faq .qa__mark {
  position: relative;
  width: 14px;
  height: 14px;
  margin-top: 4px;
  flex: none;
}

.page-faq .qa__mark::before,
.page-faq .qa__mark::after {
  content: "";
  position: absolute;
  background: var(--faq-accent);
}

.page-faq .qa__mark::before {
  top: 6px;
  left: 0;
  width: 14px;
  height: 2px;
}

.page-faq .qa__mark::after {
  top: 0;
  left: 6px;
  width: 2px;
  height: 14px;
  transition: transform .2s var(--ease), opacity .2s var(--ease);
}

.page-faq .qa[open] .qa__mark::after {
  transform: rotate(90deg);
  opacity: 0;
}

.page-faq .qa__a {
  padding: 14px 16px 18px;
  border-top: 1px solid var(--faq-hair);
  animation: faqReveal .22s var(--ease) both;
}

.page-faq .qa__a p {
  margin: 0 0 10px;
  font-size: 14.5px;
  line-height: 1.8;
  color: rgba(232, 244, 255, .86);
}

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

.page-faq .qa__steps {
  list-style: none;
  margin: 0 0 4px;
  padding: 0;
  display: grid;
  gap: 9px;
}

.page-faq .qa__steps li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 10px;
  font-size: 14px;
  line-height: 1.75;
  color: rgba(232, 244, 255, .86);
}

.page-faq .qa__step-no {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--faq-accent);
  padding-top: 4px;
}

.page-faq .faq-figure {
  margin: 16px 0 0;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  border: 1px solid var(--faq-hair);
  background: var(--ink);
}

.page-faq .faq-figure .annotation {
  display: block;
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .04em;
  color: var(--mist);
}

.page-faq .faq-help {
  margin-top: 48px;
  padding: 40px 0 56px;
  border-top: 1px solid var(--faq-hair);
  background:
    linear-gradient(180deg, rgba(59, 42, 107, .30), rgba(6, 20, 38, .10) 70%),
    var(--navy);
}

.page-faq .faq-help__panel {
  display: grid;
  gap: 24px;
  padding: 26px 20px;
  border: 1px solid var(--faq-hair);
  border-top: 2px solid var(--cyan);
  background: rgba(6, 20, 38, .55);
}

.page-faq .faq-help__title {
  margin: 8px 0 0;
  font-size: 23px;
  line-height: 1.35;
  letter-spacing: -.01em;
  font-weight: 800;
  color: var(--ice);
}

.page-faq .faq-help__text {
  margin: 12px 0 20px;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(232, 244, 255, .82);
  max-width: 40em;
}

.page-faq .faq-help__contacts {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--faq-hair);
}

.page-faq .faq-help__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 4px;
  padding: 13px 0;
  border-bottom: 1px solid var(--faq-hair);
}

.page-faq .faq-help__key {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--mist);
}

.page-faq .faq-help__val {
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.5;
  color: var(--ice);
  word-break: break-word;
}

.page-faq .faq-help .copy-btn {
  justify-self: start;
  margin-top: 6px;
  padding: 6px 12px;
  border: 1px solid var(--line-cyan);
  background: transparent;
  color: var(--cyan);
  font-family: var(--font-sans);
  font-size: 12px;
  line-height: 1.4;
  cursor: pointer;
  transition: background-color .2s var(--ease), border-color .2s var(--ease);
}

.page-faq .faq-help .copy-btn:hover,
.page-faq .faq-help .copy-btn:focus-visible {
  background: var(--cyan-soft);
  border-color: var(--cyan);
  outline: none;
}

.page-faq .faq-help .copy-btn[data-copied="true"] {
  border-color: var(--gold);
  color: var(--gold);
}

@keyframes faqReveal {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (min-width: 640px) {
  .page-faq .faq-index__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-hero__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .faq-help__row {
    grid-template-columns: 96px minmax(0, 1fr) auto;
    align-items: center;
    gap: 12px;
  }

  .page-faq .faq-help .copy-btn {
    margin-top: 0;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero {
    padding: 40px 0 52px;
  }

  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr);
    align-items: end;
    gap: 48px;
  }

  .page-faq .faq-index__head {
    grid-template-columns: minmax(0, 1fr) minmax(0, 340px);
    align-items: end;
    gap: 32px;
  }

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

  .page-faq .faq-help__panel {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
    align-items: start;
    gap: 40px;
    padding: 34px 32px;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-body {
    grid-template-columns: 236px minmax(0, 1fr);
    gap: 44px;
    align-items: start;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 92px;
    padding: 18px;
  }

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

  .page-faq .faq-rail__link {
    width: 100%;
    justify-content: flex-start;
    white-space: normal;
    padding: 9px 10px;
  }

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

  .page-faq .faq-group__title {
    font-size: 24px;
  }

  .page-faq .qa__q {
    font-size: 15.5px;
    padding: 16px 20px;
  }

  .page-faq .qa__a {
    padding: 16px 20px 20px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa__a {
    animation: none;
  }

  .page-faq .faq-tile,
  .page-faq .qa__mark::after,
  .page-faq .qa,
  .page-faq .copy-btn {
    transition: none;
  }
}
<<<END>>>