.page-faq {
  --faq-border: rgba(90, 125, 147, 0.32);
  --faq-border-soft: rgba(90, 125, 147, 0.18);
  --faq-cyan-soft: rgba(53, 224, 208, 0.12);
  --faq-coral-soft: rgba(255, 122, 89, 0.14);
  --faq-sand-soft: rgba(232, 196, 138, 0.16);
}

.page-faq .faq-crumbs {
  padding-top: 20px;
}

/* ---------- Hero ---------- */
.page-faq .faq-hero {
  padding-top: clamp(24px, 4vw, 48px);
  padding-bottom: clamp(40px, 6vw, 72px);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(28px, 4vw, 48px);
}

.page-faq .faq-hero__title {
  margin: 14px 0 20px;
  font-size: clamp(34px, 7.2vw, 72px);
  line-height: 1.02;
  letter-spacing: -0.02em;
  font-weight: 800;
  color: var(--c-mist);
}

.page-faq .faq-hero__lead {
  max-width: 60ch;
  margin: 0;
  color: var(--c-slate);
  font-size: clamp(16px, 1.6vw, 18px);
  line-height: 1.8;
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.page-faq .faq-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .preview {
  margin: 0;
  padding: clamp(18px, 3vw, 26px);
  list-style: none;
  background: linear-gradient(160deg, var(--c-panel), var(--c-ink-2));
  border: 1px solid var(--faq-border);
  display: grid;
  gap: 4px;
  align-self: start;
}

.page-faq .preview__item + .preview__item {
  border-top: 1px dashed var(--faq-border-soft);
}

.page-faq .preview__link {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 14px 4px;
  text-decoration: none;
  color: inherit;
  transition: transform 0.25s var(--ease);
}

.page-faq .preview__link:hover {
  transform: translateX(4px);
}

.page-faq .preview__num {
  flex: none;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--c-coral);
  padding-top: 4px;
}

.page-faq .preview__body {
  display: grid;
  gap: 6px;
}

.page-faq .preview__title {
  font-size: 17px;
  font-weight: 700;
  color: var(--c-mist);
  letter-spacing: -0.01em;
}

.page-faq .preview__note {
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--c-slate);
}

.page-faq .faq-hero__figure {
  margin: clamp(28px, 4vw, 44px) 0 0;
}

/* ---------- Steps ---------- */
.page-faq .faq-steps__head {
  max-width: 720px;
  margin-bottom: clamp(28px, 4vw, 44px);
}

.page-faq .faq-steps__head h2 {
  margin: 12px 0 14px;
  font-size: clamp(26px, 4.2vw, 44px);
  line-height: 1.14;
  letter-spacing: -0.02em;
  color: var(--c-mist);
}

.page-faq .faq-steps__head p:last-child {
  margin: 0;
  color: var(--c-slate);
  font-size: 16px;
  line-height: 1.8;
}

.page-faq .steps {
  display: grid;
  gap: 18px;
}

.page-faq .step {
  display: grid;
  gap: 10px;
  padding: clamp(20px, 3vw, 32px);
  background: var(--c-panel);
  border: 1px solid var(--faq-border);
  scroll-margin-top: 110px;
}

.page-faq .step__num {
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: clamp(44px, 8vw, 76px);
  line-height: 0.8;
  letter-spacing: -0.04em;
  color: var(--c-cyan);
  opacity: 0.32;
}

.page-faq .step__label {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--c-sand);
}

.page-faq .step__title {
  margin: 0 0 12px;
  font-size: clamp(19px, 2.4vw, 24px);
  line-height: 1.3;
  color: var(--c-mist);
  letter-spacing: -0.01em;
}

.page-faq .step__text {
  margin: 0 0 16px;
  color: var(--c-slate);
  font-size: 15.5px;
  line-height: 1.8;
}

.page-faq .step__tip {
  margin: 0;
  padding: 12px 14px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--c-mist);
  background: var(--faq-sand-soft);
  border-left: 3px solid var(--c-sand);
}

/* ---------- Devices ---------- */
.page-faq .devices__grid {
  display: grid;
  gap: clamp(26px, 4vw, 44px);
}

.page-faq .devices__col h2 {
  margin: 12px 0 14px;
  font-size: clamp(26px, 4.2vw, 42px);
  line-height: 1.14;
  letter-spacing: -0.02em;
  color: var(--c-mist);
}

.page-faq .devices__lead {
  margin: 0 0 22px;
  color: var(--c-slate);
  font-size: 16px;
  line-height: 1.8;
}

.page-faq .checklist {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}

.page-faq .checklist li {
  position: relative;
  padding-left: 28px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--c-mist);
}

.page-faq .checklist li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 14px;
  height: 2px;
  background: var(--c-cyan);
}

.page-faq .devices__figure {
  margin: 0;
}

.page-faq .switch {
  margin-top: clamp(26px, 4vw, 44px);
  padding: clamp(18px, 3vw, 28px);
  background: var(--c-ink-2);
  border: 1px solid var(--faq-border-soft);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--cut)), calc(100% - var(--cut)) 100%, 0 100%);
}

.page-faq .switch__svg {
  display: block;
  width: 100%;
  max-width: 640px;
  height: auto;
  margin: 0 auto;
}

.page-faq .switch__caption {
  margin: 14px 0 0;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.02em;
  color: var(--c-slate);
}

/* ---------- Navigation guide ---------- */
.page-faq .nav-guide__head {
  max-width: 680px;
  margin-bottom: clamp(26px, 4vw, 40px);
}

.page-faq .nav-guide__head h2 {
  margin: 12px 0 14px;
  font-size: clamp(26px, 4.2vw, 42px);
  line-height: 1.14;
  letter-spacing: -0.02em;
  color: var(--c-mist);
}

.page-faq .nav-guide__head p:last-child {
  margin: 0;
  color: var(--c-slate);
  font-size: 16px;
  line-height: 1.8;
}

.page-faq .nav-guide__grid {
  display: grid;
  gap: 16px;
}

.page-faq .nav-card {
  padding: clamp(20px, 3vw, 28px);
  background: var(--c-panel);
  border: 1px solid var(--faq-border);
}

.page-faq .nav-card:nth-child(2) {
  background: linear-gradient(150deg, rgba(255, 122, 89, 0.1), var(--c-panel) 60%);
}

.page-faq .nav-card:nth-child(4) {
  background: linear-gradient(150deg, rgba(53, 224, 208, 0.1), var(--c-panel) 60%);
}

.page-faq .nav-card__label {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-sand);
}

.page-faq .nav-card__title {
  margin: 0 0 12px;
  font-size: 19px;
  line-height: 1.35;
  color: var(--c-mist);
  letter-spacing: -0.01em;
}

.page-faq .nav-card__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--c-slate);
}

/* ---------- FAQ ---------- */
.page-faq .faq-qa__grid {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
}

.page-faq .faq-index {
  align-self: start;
}

.page-faq .faq-index__list {
  margin: 14px 0 20px;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 2px;
  border-left: 1px solid var(--faq-border);
}

.page-faq .faq-index__link {
  display: block;
  padding: 8px 0 8px 16px;
  font-size: 14.5px;
  color: var(--c-slate);
  text-decoration: none;
  border-left: 2px solid transparent;
  margin-left: -1px;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-faq .faq-index__link:hover {
  color: var(--c-cyan);
  border-left-color: var(--c-cyan);
}

.page-faq .faq-index__card {
  padding: 18px;
  background: var(--c-ink-2);
  border: 1px solid var(--faq-border-soft);
}

.page-faq .faq-index__card-title {
  margin: 0 0 10px;
  font-size: 14px;
  font-weight: 700;
  color: var(--c-mist);
}

.page-faq .faq-index__mail {
  display: block;
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--c-cyan);
  text-decoration: none;
  word-break: break-all;
}

.page-faq .faq-index__mail:hover {
  text-decoration: underline;
}

.page-faq .faq-index__card-note {
  margin: 10px 0 0;
  font-size: 12.5px;
  color: var(--c-slate);
}

.page-faq .faq-qa__body h2 {
  margin: 0 0 12px;
  font-size: clamp(26px, 4.2vw, 42px);
  line-height: 1.14;
  letter-spacing: -0.02em;
  color: var(--c-mist);
}

.page-faq .faq-qa__lead {
  margin: 0 0 clamp(20px, 3vw, 30px);
  max-width: 62ch;
  color: var(--c-slate);
  font-size: 16px;
  line-height: 1.8;
}

.page-faq .qa {
  margin-bottom: 10px;
  background: var(--c-panel);
  border: 1px solid var(--faq-border);
  scroll-margin-top: 110px;
}

.page-faq .qa__summary {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  padding: 16px clamp(16px, 2.5vw, 22px);
  cursor: pointer;
  list-style: none;
}

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

.page-faq .qa__q {
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--c-mist);
}

.page-faq .qa__icon {
  flex: none;
  width: 24px;
  height: 24px;
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-size: 16px;
  line-height: 1;
  color: var(--c-cyan);
  border: 1px solid var(--faq-border);
  border-radius: 50%;
  transition: transform 0.25s var(--ease), background 0.25s var(--ease);
}

.page-faq .qa[open] .qa__icon {
  transform: rotate(45deg);
  background: var(--faq-cyan-soft);
}

.page-faq .qa[open] {
  border-color: rgba(53, 224, 208, 0.4);
}

.page-faq .qa__body {
  padding: 0 clamp(16px, 2.5vw, 22px) 20px;
  animation: faqReveal 0.28s var(--ease) both;
}

.page-faq .qa__body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--c-slate);
  max-width: 66ch;
}

@keyframes faqReveal {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* ---------- Help ---------- */
.page-faq .help__panel {
  padding: clamp(24px, 4vw, 48px);
  background: linear-gradient(155deg, var(--c-ink-2), var(--c-panel) 70%);
  border: 1px solid var(--faq-border);
}

.page-faq .help__head h2 {
  margin: 12px 0 14px;
  font-size: clamp(26px, 4.2vw, 40px);
  line-height: 1.14;
  letter-spacing: -0.02em;
  color: var(--c-mist);
}

.page-faq .help__head p:last-child {
  margin: 0;
  max-width: 62ch;
  color: var(--c-slate);
  font-size: 15.5px;
  line-height: 1.8;
}

.page-faq .help__rows {
  margin: clamp(22px, 3vw, 32px) 0 0;
  display: grid;
  gap: 2px;
}

.page-faq .help__row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 4px 16px;
  align-items: center;
  padding: 16px 4px;
  border-top: 1px solid var(--faq-border-soft);
  text-decoration: none;
  color: inherit;
}

.page-faq .help__row:last-child {
  border-bottom: 1px solid var(--faq-border-soft);
}

.page-faq .help__key {
  grid-column: 1;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--c-sand);
}

.page-faq .help__val {
  grid-column: 1;
  font-size: 15px;
  line-height: 1.6;
  color: var(--c-mist);
  word-break: break-word;
}

.page-faq .help__arrow {
  grid-column: 2;
  grid-row: 1 / span 2;
  font-family: var(--font-mono);
  font-size: 18px;
  color: var(--c-cyan);
  transition: transform 0.2s var(--ease);
}

.page-faq a.help__row:hover .help__arrow {
  transform: translateX(4px);
}

.page-faq a.help__row:hover .help__val {
  color: var(--c-cyan);
}

.page-faq .help__note {
  margin: 20px 0 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--c-slate);
  padding-left: 14px;
  border-left: 2px solid var(--c-teal);
}

.page-faq .help__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

/* ---------- Responsive ---------- */
@media (min-width: 720px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: 1.45fr 1fr;
    align-items: start;
  }

  .page-faq .nav-guide__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-faq .step {
    grid-template-columns: 130px 1fr;
    gap: clamp(20px, 3vw, 36px);
    align-items: start;
  }

  .page-faq .step__num {
    position: sticky;
    top: 100px;
  }
}

@media (min-width: 960px) {
  .page-faq .devices__grid {
    grid-template-columns: 1fr 1fr;
    align-items: start;
  }

  .page-faq .faq-qa__grid {
    grid-template-columns: 250px 1fr;
    gap: clamp(32px, 4vw, 56px);
  }

  .page-faq .faq-index {
    position: sticky;
    top: 100px;
  }
}

@media (min-width: 1100px) {
  .page-faq .nav-guide__grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .preview__link,
  .page-faq .qa__icon,
  .page-faq .help__arrow,
  .page-faq .faq-index__link {
    transition: none;
  }

  .page-faq .preview__link:hover {
    transform: none;
  }

  .page-faq .qa__body {
    animation: none;
  }
}
<<<END>>>