.page-faq {
  --faq-rail: 250px;
  --faq-line: rgba(168, 212, 240, .16);
  --faq-soft: rgba(247, 250, 252, .8);
  background:
    radial-gradient(1100px 520px at 84% -8%, rgba(42, 125, 191, .32), transparent 62%),
    linear-gradient(180deg, var(--ink) 0%, var(--lake-deep) 42%, var(--lake-deep) 100%);
  color: var(--frost);
}

.page-faq .cf-section {
  padding-top: clamp(38px, 6vw, 72px);
}

/* ---------- hero ---------- */
.page-faq .faq-hero {
  padding-top: clamp(22px, 3.5vw, 40px);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(26px, 5vw, 60px);
  align-items: center;
}

.page-faq .faq-hero__note {
  margin: 16px 0 0;
  max-width: 36em;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(168, 212, 240, .9);
  padding-left: 14px;
  border-left: 2px solid rgba(242, 169, 59, .7);
}

.page-faq .faq-hero__viz {
  position: relative;
  min-height: clamp(240px, 34vw, 380px);
  display: grid;
  place-items: center;
  overflow: hidden;
  border: 1px solid var(--faq-line);
  background:
    repeating-linear-gradient(90deg, rgba(168, 212, 240, .07) 0 1px, transparent 1px 44px),
    repeating-linear-gradient(0deg, rgba(168, 212, 240, .05) 0 1px, transparent 1px 44px),
    linear-gradient(152deg, rgba(15, 76, 129, .68), rgba(6, 23, 38, .94));
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 36px), calc(100% - 36px) 100%, 0 100%);
}

.page-faq .faq-hero__beam {
  position: absolute;
  left: -20%;
  top: 50%;
  width: 140%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(242, 169, 59, .85), transparent);
  transform: rotate(-13deg);
}

.page-faq .faq-hero__big {
  font-family: var(--font-num);
  font-weight: 700;
  font-size: clamp(120px, 22vw, 220px);
  line-height: .8;
  letter-spacing: -.04em;
  color: var(--gold);
  transform: rotate(-8deg) translateY(-6px);
  text-shadow: 0 0 44px rgba(242, 169, 59, .35);
}

.page-faq .faq-hero__caption {
  position: absolute;
  right: 20px;
  bottom: 18px;
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--sky);
}

.page-faq .faq-hero__chip {
  position: absolute;
  width: 62px;
  height: 88px;
  border: 1px solid rgba(168, 212, 240, .4);
  background: linear-gradient(160deg, rgba(15, 76, 129, .85), rgba(6, 23, 38, .7));
  clip-path: polygon(0 0, 100% 0, 100% 76%, 76% 100%, 0 100%);
}

.page-faq .faq-hero__chip--a {
  left: 12%;
  top: 16%;
  transform: rotate(-16deg);
}

.page-faq .faq-hero__chip--b {
  right: 10%;
  top: 24%;
  transform: rotate(14deg);
  border-color: rgba(31, 111, 92, .7);
}

/* ---------- .page-faq layout ---------- */
.page-faq .faq-body {
  display: grid;
  gap: clamp(28px, 5vw, 56px);
  padding-bottom: clamp(54px, 8vw, 104px);
}

.page-faq .faq-rail__label {
  margin: 0 0 12px;
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--gold-soft);
}

.page-faq .faq-rail__nav {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 6px;
  scrollbar-width: none;
}

.page-faq .faq-rail__nav::-webkit-scrollbar {
  display: none;
}

.page-faq .faq-rail__nav a {
  flex: 0 0 auto;
  padding: 8px 14px;
  font-size: 14px;
  text-decoration: none;
  color: var(--sky);
  border: 1px solid var(--faq-line);
  background: rgba(10, 37, 64, .6);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%);
  transition: color .2s ease, border-color .2s ease, background-color .2s ease;
}

.page-faq .faq-rail__nav a:hover,
.page-faq .faq-rail__nav a:focus-visible {
  color: var(--frost);
  border-color: rgba(242, 169, 59, .7);
  background: rgba(15, 76, 129, .8);
}

.page-faq .faq-rail__nav a:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 2px;
}

.page-faq .faq-rail__hint {
  display: none;
  margin: 20px 0 0;
  font-size: 13px;
  line-height: 1.8;
  color: rgba(168, 212, 240, .75);
  padding-top: 16px;
  border-top: 1px dashed var(--faq-line);
}

/* ---------- section heads ---------- */
.page-faq .faq-sec .cf-section__head {
  margin-bottom: clamp(22px, 3vw, 34px);
}

/* ---------- 30s checklist ---------- */
.page-faq .faq-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-faq .faq-step {
  padding: clamp(20px, 2.6vw, 28px);
  background: linear-gradient(158deg, rgba(15, 76, 129, .48), rgba(10, 37, 64, .82));
  border: 1px solid var(--faq-line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 20px), calc(100% - 20px) 100%, 0 100%);
  transition: transform .25s ease, border-color .25s ease;
}

.page-faq .faq-step:hover,
.page-faq .faq-step:focus-within {
  transform: translateY(-3px);
  border-color: rgba(242, 169, 59, .6);
}

.page-faq .faq-step__num {
  display: block;
  font-family: var(--font-num);
  font-weight: 700;
  font-size: clamp(34px, 4vw, 46px);
  line-height: 1;
  color: var(--gold);
  letter-spacing: -.03em;
  margin-bottom: 10px;
}

.page-faq .faq-step__title {
  margin: 0 0 8px;
  font-size: 18px;
  line-height: 1.5;
  color: var(--frost);
}

.page-faq .faq-step p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--faq-soft);
}

/* ---------- reconnect ---------- */
.page-faq .faq-reconnect {
  display: grid;
  gap: clamp(20px, 3vw, 30px);
}

.page-faq .faq-reconnect__panel {
  padding: clamp(22px, 3vw, 34px);
  background: linear-gradient(162deg, rgba(242, 169, 59, .18), rgba(10, 37, 64, .92) 58%);
  border: 1px solid rgba(242, 169, 59, .55);
  clip-path: polygon(0 0, calc(100% - 28px) 0, 100% 28px, 100% 100%, 28px 100%, 0 calc(100% - 28px));
}

.page-faq .faq-reconnect__steps {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-faq .faq-reconnect__steps li {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  padding-top: 16px;
  border-top: 1px dashed rgba(168, 212, 240, .28);
}

.page-faq .faq-reconnect__steps li:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-faq .faq-reconnect__n {
  font-family: var(--font-num);
  font-weight: 700;
  font-size: 32px;
  line-height: 1;
  color: var(--gold);
  border: 1px solid rgba(242, 169, 59, .5);
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  clip-path: polygon(0 0, 100% 0, 100% 70%, 70% 100%, 0 100%);
}

.page-faq .faq-reconnect__t {
  margin: 0 0 6px;
  font-size: 17px;
  line-height: 1.5;
  color: var(--frost);
}

.page-faq .faq-reconnect__steps p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--faq-soft);
}

.page-faq .faq-reconnect__warn {
  margin: 22px 0 0;
  padding: 14px 16px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--frost);
  background: rgba(200, 69, 47, .16);
  border-left: 3px solid var(--vermilion);
}

.page-faq .faq-reconnect__warn strong {
  color: var(--gold-soft);
}

.page-faq .faq-reconnect__fig .cf-figure__frame {
  --cf-ratio: 3 / 2;
}

/* ---------- order versions ---------- */
.page-faq .faq-versions {
  display: grid;
  gap: 16px;
}

.page-faq .faq-versions__bridge {
  display: none;
}

.page-faq .faq-version {
  padding: clamp(20px, 2.6vw, 28px);
  border: 1px solid var(--faq-line);
  background: rgba(10, 37, 64, .68);
  transition: border-color .25s ease, transform .25s ease;
}

.page-faq .faq-version:hover,
.page-faq .faq-version:focus-within {
  transform: translateY(-3px);
  border-color: rgba(242, 169, 59, .6);
}

.page-faq .faq-version--std {
  border-top: 3px solid var(--gold);
}

.page-faq .faq-version--fast {
  border-top: 3px solid var(--felt-lite);
}

.page-faq .faq-version__title {
  margin: 14px 0 12px;
  font-size: 18px;
  line-height: 1.5;
  color: var(--frost);
}

.page-faq .faq-version .cf-list {
  margin: 0;
  padding-left: 18px;
  display: grid;
  gap: 8px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--faq-soft);
}

.page-faq .faq-order__fig {
  margin-top: clamp(20px, 3vw, 30px);
}

.page-faq .faq-order__fig .cf-figure__frame {
  --cf-ratio: 10 / 7;
}

/* ---------- room filters ---------- */
.page-faq .faq-filter-grid {
  display: grid;
  gap: 14px;
}

.page-faq .faq-filter {
  padding: 20px 20px 22px;
  background: linear-gradient(160deg, rgba(31, 111, 92, .3), rgba(10, 37, 64, .8));
  border: 1px solid var(--faq-line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 16px), calc(100% - 16px) 100%, 0 100%);
}

.page-faq .faq-filter__t {
  margin: 0 0 8px;
  font-size: 16px;
  color: var(--felt-lite);
  letter-spacing: .04em;
}

.page-faq .faq-filter p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--faq-soft);
}

.page-faq .faq-mini {
  margin: 28px 0 0;
  border-top: 1px solid var(--faq-line);
}

.page-faq .faq-mini > div {
  display: grid;
  gap: 6px;
  padding: 16px 0;
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .faq-mini dt {
  font-size: 15px;
  font-weight: 600;
  color: var(--gold-soft);
}

.page-faq .faq-mini dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--faq-soft);
}

/* ---------- device ---------- */
.page-faq .faq-device {
  padding: clamp(20px, 2.6vw, 28px);
}

.page-faq .faq-device .cf-list {
  margin: 0;
  padding-left: 18px;
  display: grid;
  gap: 10px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--faq-soft);
}

.page-faq .faq-device__tip {
  margin: 22px 0 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--sky);
  padding-left: 14px;
  border-left: 2px solid rgba(168, 212, 240, .5);
}

/* ---------- faq groups ---------- */
.page-faq .faq-group {
  margin-top: clamp(24px, 3vw, 34px);
}

.page-faq .faq-group__title {
  margin: 0 0 8px;
  font-size: 13px;
  letter-spacing: .22em;
  color: var(--gold-soft);
}

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

.page-faq .faq-item summary {
  position: relative;
  list-style: none;
  cursor: pointer;
  padding: 16px 46px 16px 0;
  font-size: 16px;
  line-height: 1.6;
  color: var(--frost);
  transition: color .2s ease;
}

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

.page-faq .faq-item summary::after {
  content: "+";
  position: absolute;
  right: 6px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-num);
  font-size: 24px;
  line-height: 1;
  color: var(--gold);
}

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

.page-faq .faq-item[open] summary {
  color: var(--gold-soft);
}

.page-faq .faq-item summary:hover {
  color: var(--gold-soft);
}

.page-faq .faq-item summary:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 3px;
}

.page-faq .faq-item__body {
  padding: 0 0 18px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--faq-soft);
}

/* ---------- support ---------- */
.page-faq .faq-support__panel {
  padding: clamp(24px, 4vw, 46px);
  background: linear-gradient(148deg, rgba(242, 169, 59, .2), rgba(31, 111, 92, .2) 46%, rgba(10, 37, 64, .92));
  border: 1px solid rgba(242, 169, 59, .45);
  clip-path: polygon(0 0, calc(100% - 32px) 0, 100% 32px, 100% 100%, 32px 100%, 0 calc(100% - 32px));
}

.page-faq .faq-support__list {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .faq-support__list li {
  display: grid;
  gap: 4px;
  padding: 12px 0;
  border-bottom: 1px dashed rgba(168, 212, 240, .24);
}

.page-faq .faq-support__k {
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--sky);
}

.page-faq .faq-support__v {
  font-family: var(--font-num);
  font-size: 18px;
  letter-spacing: .02em;
  color: var(--frost);
  word-break: break-word;
}

.page-faq .faq-support__note {
  margin: 20px 0 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: rgba(255, 217, 138, .92);
}

/* ---------- responsive ---------- */
@media (min-width: 600px) {
  .page-faq .faq-steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .page-faq .faq-support__list li {
    grid-template-columns: 130px minmax(0, 1fr);
    align-items: baseline;
    gap: 16px;
  }
}

@media (min-width: 820px) {
  .page-faq .faq-versions {
    grid-template-columns: minmax(0, 1fr) 2px minmax(0, 1fr);
    gap: 0;
    align-items: stretch;
  }

  .page-faq .faq-versions__bridge {
    display: block;
    width: 2px;
    margin: 0 clamp(14px, 2.4vw, 30px);
    background: linear-gradient(180deg, transparent, var(--gold), transparent);
  }

  .page-faq .faq-mini > div {
    grid-template-columns: 240px minmax(0, 1fr);
    gap: 24px;
    align-items: baseline;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    gap: clamp(30px, 5vw, 68px);
  }

  .page-faq .faq-reconnect {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
  }

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

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

  .page-faq .faq-rail {
    position: sticky;
    top: 104px;
  }

  .page-faq .faq-rail__nav {
    flex-direction: column;
    overflow: visible;
    gap: 6px;
  }

  .page-faq .faq-rail__nav a {
    padding: 10px 14px;
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-step,
  .page-faq .faq-version,
  .page-faq .faq-rail__nav a {
    transition: none;
  }

  .page-faq .faq-step:hover,
  .page-faq .faq-step:focus-within,
  .page-faq .faq-version:hover,
  .page-faq .faq-version:focus-within {
    transform: none;
  }
}