.page-faq {
  --faq-gutter: clamp(18px, 5vw, 32px);
  --faq-cut: 18px;
  --faq-line: 1px solid var(--ink-700);
  --faq-panel: var(--ink-850);
  --faq-gap: clamp(48px, 7vw, 96px);

  width: min(var(--shell), 100% - var(--faq-gutter) * 2);
  margin-inline: auto;
  padding-block: clamp(22px, 4vw, 38px) clamp(64px, 9vw, 120px);
  color: var(--text);
  font-size: 16px;
  line-height: 1.75;
  overflow-x: clip;
}

.page-faq .breadcrumb {
  margin-bottom: clamp(18px, 3vw, 30px);
  font-size: 13px;
  color: var(--text-dim);
}

.page-faq .section {
  margin-top: var(--faq-gap);
}

.page-faq .section--tight {
  margin-top: 0;
}

.page-faq .page-faq__head {
  max-width: 64ch;
  margin-bottom: clamp(22px, 3.5vw, 38px);
}

.page-faq .page-faq__head h2 {
  margin: 10px 0 12px;
}

/* ---------- Hero ---------- */

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

.page-faq .page-faq__hero-main {
  padding: clamp(24px, 4vw, 48px);
}

.page-faq .page-faq__hero-main .display {
  margin: 12px 0 16px;
  font-size: clamp(28px, 5.6vw, 52px);
  line-height: 1.22;
  letter-spacing: -0.01em;
  color: var(--cream);
}

.page-faq .page-faq__hero-main .lede {
  margin: 0;
  max-width: 56ch;
  color: var(--text-dim);
  font-size: 16px;
}

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

.page-faq .page-faq__hero-side .cut-panel {
  padding: clamp(18px, 2.4vw, 26px);
  background: var(--ink-800);
}

.page-faq .page-faq__stat {
  display: block;
  font-size: clamp(26px, 3.6vw, 36px);
  line-height: 1;
  color: var(--cyan);
  margin-bottom: 10px;
  letter-spacing: 0.02em;
}

.page-faq .page-faq__stat-note {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--text-dim);
}

/* ---------- Step band ---------- */

.page-faq .page-faq__steps-figure {
  margin: 0 0 clamp(22px, 3.5vw, 36px);
  background: var(--ink-800);
}

.page-faq .page-faq__steps-figure img,
.page-faq .page-faq__version-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(0.72) contrast(1.03);
}

.page-faq .page-faq__step-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
  counter-reset: faqstep;
}

.page-faq .page-faq__step {
  position: relative;
  padding: 22px 20px 20px;
  background: var(--ink-800);
  transition: border-color 200ms var(--ease), transform 200ms var(--ease);
}

.page-faq .page-faq__step:hover {
  border-color: var(--cyan);
  transform: translateY(-2px);
}

.page-faq .page-faq__step-no {
  display: block;
  width: 100%;
  padding-bottom: 8px;
  margin-bottom: 14px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--cyan);
  border-bottom: var(--faq-line);
}

.page-faq .page-faq__step h3 {
  margin: 0 0 8px;
  font-size: 18px;
  color: var(--cream);
}

.page-faq .page-faq__step p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-dim);
}

/* ---------- Device switch ---------- */

.page-faq .page-faq__switch {
  position: relative;
}

.page-faq .page-faq__radio {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.page-faq .page-faq__tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 18px;
}

.page-faq .page-faq__radio:focus-visible ~ .page-faq__tabs {
  outline: 2px solid var(--cyan);
  outline-offset: 4px;
}

.page-faq .page-faq__tab {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 22px;
  font-size: 14px;
  color: var(--text-dim);
  border: var(--faq-line);
  background: var(--ink-850);
  cursor: pointer;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%);
  transition: color 200ms var(--ease), background-color 200ms var(--ease), border-color 200ms var(--ease);
}

.page-faq .page-faq__tab:hover {
  color: var(--text);
  border-color: var(--cyan);
}

.page-faq #faq-dev-phone:checked ~ .page-faq__tabs [for="faq-dev-phone"],
.page-faq #faq-dev-tablet:checked ~ .page-faq__tabs [for="faq-dev-tablet"],
.page-faq #faq-dev-desktop:checked ~ .page-faq__tabs [for="faq-dev-desktop"] {
  color: var(--ink-900);
  background: var(--cyan);
  border-color: var(--cyan);
}

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

.page-faq #faq-dev-phone:checked ~ .page-faq__panels .page-faq__panel[data-device="phone"],
.page-faq #faq-dev-tablet:checked ~ .page-faq__panels .page-faq__panel[data-device="tablet"],
.page-faq #faq-dev-desktop:checked ~ .page-faq__panels .page-faq__panel[data-device="desktop"] {
  display: block;
}

.page-faq .page-faq__rows {
  display: grid;
  gap: 10px;
}

.page-faq .page-faq__row {
  display: grid;
  gap: 12px;
  padding: 18px 20px;
  background: var(--faq-panel);
  border-left: 2px solid var(--ink-700);
  transition: border-color 200ms var(--ease);
}

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

.page-faq .page-faq__symptom,
.page-faq .page-faq__action {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
}

.page-faq .page-faq__symptom {
  color: var(--text);
}

.page-faq .page-faq__action {
  color: var(--text-dim);
}

.page-faq .page-faq__symptom .mono,
.page-faq .page-faq__action .mono {
  display: block;
  font-size: 11px;
  letter-spacing: 0.18em;
  margin-bottom: 6px;
}

.page-faq .page-faq__symptom .mono {
  color: var(--orange);
}

.page-faq .page-faq__action .mono {
  color: var(--cyan);
}

/* ---------- Version comparison ---------- */

.page-faq .page-faq__version-grid {
  display: grid;
  gap: 26px;
}

.page-faq .page-faq__version-copy .prose {
  margin: 0;
  color: var(--text-dim);
}

.page-faq .page-faq__check-list {
  list-style: none;
  counter-reset: faqcheck;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-faq .page-faq__check-list li {
  position: relative;
  counter-increment: faqcheck;
  padding-left: 46px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-dim);
}

.page-faq .page-faq__check-list li::before {
  content: "0" counter(faqcheck);
  position: absolute;
  left: 0;
  top: 1px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--cyan);
  border: 1px solid var(--ink-700);
  padding: 3px 6px;
  clip-path: polygon(0 0, 100% 0, 100% 68%, 68% 100%, 0 100%);
}

.page-faq .page-faq__check-list strong {
  display: block;
  color: var(--text);
  font-weight: 600;
  margin-bottom: 3px;
  font-size: 15px;
}

.page-faq .page-faq__version-figure {
  margin: 0;
  background: var(--ink-800);
}

.page-faq .page-faq__version-more {
  margin: clamp(24px, 3.5vw, 36px) 0 0;
  padding-top: 20px;
  border-top: var(--faq-line);
  color: var(--text-dim);
  font-size: 14px;
  max-width: 78ch;
}

/* ---------- Refresh strip ---------- */

.page-faq .page-faq__refresh-strip {
  display: grid;
  gap: 1px;
  background: var(--ink-700);
  border: var(--faq-line);
  margin-bottom: clamp(24px, 3.5vw, 38px);
}

.page-faq .page-faq__refresh-cell {
  padding: 20px 18px;
  background: var(--faq-panel);
}

.page-faq .page-faq__refresh-num {
  display: block;
  font-size: 24px;
  line-height: 1.15;
  color: var(--cyan);
  margin-bottom: 8px;
  letter-spacing: 0.01em;
}

.page-faq .page-faq__refresh-label {
  display: block;
  font-size: 13px;
  line-height: 1.68;
  color: var(--text-dim);
}

.page-faq .page-faq__refresh-sub {
  margin: 0 0 14px;
  font-size: 19px;
  color: var(--cream);
}

.page-faq .page-faq__alerts {
  list-style: none;
  margin: 0 0 clamp(20px, 3vw, 30px);
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .page-faq__alerts li {
  padding: 18px;
  background: var(--ink-800);
  border: var(--faq-line);
  border-top: 2px solid var(--orange);
  font-size: 14px;
  line-height: 1.72;
  color: var(--text-dim);
}

.page-faq .page-faq__alerts .tag {
  display: inline-block;
  margin-bottom: 8px;
}

.page-faq .page-faq__refresh-note {
  margin: 0;
  color: var(--text-dim);
  font-size: 14px;
  max-width: 76ch;
}

/* ---------- Q&A ---------- */

.page-faq .page-faq__qa-list {
  border-top: var(--faq-line);
}

.page-faq .page-faq__q {
  border-bottom: var(--faq-line);
}

.page-faq .page-faq__q summary {
  display: flex;
  align-items: center;
  gap: 14px;
  min-height: 60px;
  padding: 16px 4px;
  font-size: 15px;
  line-height: 1.6;
  color: var(--text);
  cursor: pointer;
  list-style: none;
  transition: color 200ms var(--ease);
}

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

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

.page-faq .page-faq__q summary::before {
  content: "";
  flex: none;
  width: 0;
  height: 0;
  border-left: 6px solid var(--cyan);
  border-top: 5px solid transparent;
  border-bottom: 5px solid transparent;
  transition: transform 220ms var(--ease);
}

.page-faq .page-faq__q[open] summary::before {
  transform: rotate(90deg);
}

.page-faq .page-faq__q[open] summary {
  color: var(--cream);
}

.page-faq .page-faq__a {
  margin: 0;
  padding: 0 4px 20px 24px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-dim);
  max-width: 78ch;
}

/* ---------- Support ---------- */

.page-faq .page-faq__support-grid {
  display: grid;
  gap: 22px;
}

.page-faq .page-faq__support-list {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .page-faq__support-list li {
  position: relative;
  padding-left: 20px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-dim);
}

.page-faq .page-faq__support-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 10px;
  height: 1px;
  background: var(--cyan-deep);
}

.page-faq .page-faq__support-note {
  margin: 18px 0 0;
  font-size: 14px;
  color: var(--text-dim);
}

.page-faq .page-faq__support-note a {
  color: var(--cyan);
}

.page-faq .page-faq__support-card {
  padding: clamp(22px, 3.4vw, 34px);
  background: var(--ink-800);
}

.page-faq .page-faq__contact-list {
  list-style: none;
  margin: 4px 0 0;
  padding: 0;
  display: grid;
  gap: 18px;
}

.page-faq .page-faq__contact-key {
  display: block;
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--text-mute);
  margin-bottom: 6px;
}

.page-faq .page-faq__contact-list a {
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 15px;
  word-break: break-all;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .page-faq__contact-list a:hover {
  color: var(--orange);
}

.page-faq .page-faq__contact-val {
  display: block;
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-dim);
}

/* ---------- Tablet ---------- */

@media (min-width: 700px) {
  .page-faq .page-faq__row {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 26px;
    align-items: start;
  }

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

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

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

/* ---------- Desktop ---------- */

@media (min-width: 980px) {
  .page-faq .page-faq__hero {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
    gap: 20px;
    align-items: stretch;
  }

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

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

  .page-faq .page-faq__step:not(:last-child)::after {
    content: "";
    position: absolute;
    top: 40px;
    right: -10px;
    width: 16px;
    height: 1px;
    background: var(--cyan-deep);
    transform: rotate(-38deg);
  }

  .page-faq .page-faq__version-grid {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, 0.94fr);
    gap: 44px;
    align-items: center;
  }

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

  .page-faq .page-faq__support-grid {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
    gap: 32px;
    align-items: start;
  }

  .page-faq .page-faq__q summary {
    font-size: 16px;
    padding: 18px 4px;
  }
}

/* ---------- Reduced motion ---------- */

@media (prefers-reduced-motion: reduce) {
  .page-faq .page-faq__step,
  .page-faq .page-faq__row,
  .page-faq .page-faq__tab,
  .page-faq .page-faq__q summary,
  .page-faq .page-faq__q summary::before {
    transition: none;
  }

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