.page-faq {
  --faq-rail: 13.5rem;
  --faq-space: clamp(1.5rem, 3.5vw, 2.75rem);
  --faq-rim: 1px solid var(--line);
  --faq-sticky: clamp(5.5rem, 12vh, 8rem);
  background: var(--stand-900);
  color: var(--paper);
  font-family: var(--font-sans);
  padding-bottom: clamp(3rem, 7vw, 6rem);
}

.page-faq .faq-shell {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.page-faq a:focus-visible,
.page-faq button:focus-visible,
.page-faq summary:focus-visible {
  outline: 2px solid var(--whistle);
  outline-offset: 3px;
}

/* ---------- breadcrumbs ---------- */
.page-faq .faq-crumbs {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding-top: clamp(1rem, 2.5vw, 1.75rem);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--slate);
}

.page-faq .faq-crumbs a {
  color: var(--slate);
  text-decoration: none;
  transition: color var(--dur) var(--ease);
}

.page-faq .faq-crumbs a:hover {
  color: var(--whistle);
}

.page-faq .faq-crumbs [aria-current="page"] {
  color: var(--paper);
}

/* ---------- hero ---------- */
.page-faq .faq-hero {
  display: grid;
  gap: clamp(1.5rem, 4vw, 3rem);
  padding-block: clamp(1.5rem, 4vw, 2.75rem) clamp(2rem, 5vw, 3.5rem);
  border-bottom: var(--faq-rim);
}

.page-faq .faq-hero__main .display {
  margin: 0.75rem 0 1rem;
  font-size: clamp(2.3rem, 5.4vw, 4.2rem);
  line-height: 0.98;
  letter-spacing: -0.02em;
  font-weight: 800;
}

.page-faq .faq-hero__main .lede {
  max-width: 48ch;
  margin: 0;
  font-size: clamp(1rem, 1.4vw, 1.0625rem);
  line-height: 1.85;
  color: rgba(244, 235, 221, 0.84);
}

.page-faq .faq-quick {
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
  background: rgba(44, 84, 72, 0.38);
  padding: clamp(1rem, 2.5vw, 1.5rem);
  backdrop-filter: blur(8px);
}

.page-faq .faq-quick__title {
  margin: 0 0 0.85rem;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--whistle);
}

.page-faq .faq-quick__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.4rem;
}

.page-faq .faq-quick__list a {
  display: flex;
  align-items: baseline;
  gap: 0.7rem;
  padding: 0.6rem 0.7rem;
  border: 1px solid transparent;
  border-radius: var(--radius-s);
  color: var(--paper);
  text-decoration: none;
  font-size: 0.9375rem;
  line-height: 1.5;
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .faq-quick__list a:hover {
  background: rgba(244, 235, 221, 0.08);
  border-color: var(--line);
}

.page-faq .faq-quick__no {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--brick);
  flex: 0 0 auto;
}

@media (min-width: 900px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.55fr) minmax(280px, 0.85fr);
    align-items: end;
  }
}

/* ---------- .page-faq grid ---------- */
.page-faq .faq-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--faq-space);
  padding-top: clamp(1.5rem, 3.5vw, 2.75rem);
}

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

@media (min-width: 960px) {
  .page-faq .faq-body {
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
    gap: clamp(2rem, 4vw, 3.75rem);
    align-items: start;
  }
}

/* ---------- toc ---------- */
.page-faq .faq-toc__label {
  margin: 0 0 0.6rem;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--slate);
}

.page-faq .faq-toc__list {
  list-style: none;
  margin: 0;
  padding: 0 0 0.4rem;
  display: flex;
  gap: 0.45rem;
  overflow-x: auto;
  scrollbar-width: none;
}

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

.page-faq .faq-toc__list a {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  white-space: nowrap;
  padding: 0.45rem 0.75rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-capsule);
  color: var(--slate);
  text-decoration: none;
  font-size: 0.875rem;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-faq .faq-toc__list a:hover {
  color: var(--whistle);
  border-color: var(--whistle);
}

.page-faq .faq-toc__no {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--whistle);
}

@media (min-width: 960px) {
  .page-faq .faq-toc {
    position: sticky;
    top: var(--faq-sticky);
  }

  .page-faq .faq-toc__list {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding: 0;
    border-left: 1px solid var(--line);
  }

  .page-faq .faq-toc__list a {
    white-space: normal;
    border: 0;
    border-radius: 0;
    border-left: 2px solid transparent;
    margin-left: -1px;
    padding: 0.6rem 0 0.6rem 1rem;
    font-size: 0.9rem;
  }

  .page-faq .faq-toc__list a:hover {
    background: rgba(244, 235, 221, 0.05);
    border-left-color: var(--whistle);
  }
}

/* ---------- sections ---------- */
.page-faq .faq-section {
  border-top: var(--faq-rim);
  padding-block: clamp(1.5rem, 3.5vw, 2.75rem);
  scroll-margin-top: var(--faq-sticky);
}

.page-faq .faq-stream > .faq-section:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-faq .faq-head {
  margin-bottom: clamp(1rem, 2.4vw, 1.75rem);
}

.page-faq .faq-head__no {
  display: block;
  margin-bottom: 0.5rem;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--brick);
}

.page-faq .faq-head h2 {
  margin: 0 0 0.6rem;
  font-size: clamp(1.5rem, 2.6vw, 2.1rem);
  line-height: 1.18;
  letter-spacing: -0.01em;
  font-weight: 800;
}

.page-faq .faq-head p {
  margin: 0;
  max-width: 58ch;
  font-size: 0.9875rem;
  line-height: 1.8;
  color: rgba(244, 235, 221, 0.74);
}

/* ---------- start panel (light) ---------- */
.page-faq .faq-section--start {
  background: var(--paper);
  color: var(--ink);
  border: 0;
  border-radius: var(--radius-l);
  padding: clamp(1.25rem, 3vw, 2.25rem);
}

.page-faq .faq-section--start .faq-head__no {
  color: var(--brick-deep);
}

.page-faq .faq-section--start .faq-head h2 {
  color: var(--ink);
}

.page-faq .faq-section--start .faq-head p {
  color: rgba(7, 19, 15, 0.76);
}

.page-faq .faq-steps {
  list-style: none;
  margin: 0 0 clamp(1.25rem, 3vw, 2rem);
  padding: 0;
  display: grid;
  gap: 1rem;
}

.page-faq .faq-step {
  border-top: 2px solid var(--brick);
  padding-top: 0.7rem;
}

.page-faq .faq-step__no {
  display: block;
  margin-bottom: 0.3rem;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  color: var(--brick-deep);
}

.page-faq .faq-step h3 {
  margin: 0 0 0.3rem;
  font-size: 1rem;
  font-weight: 700;
  color: var(--ink);
}

.page-faq .faq-step p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: rgba(7, 19, 15, 0.76);
}

@media (min-width: 720px) {
  .page-faq .faq-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.25rem;
  }
}

/* ---------- figures ---------- */
.page-faq .faq-figure {
  margin: 0 0 clamp(1.25rem, 3vw, 2rem);
  border: var(--faq-rim);
  border-radius: var(--radius-m);
  overflow: hidden;
  background: var(--stand-800);
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-faq .faq-figure figcaption {
  padding: 0.6rem 0.85rem;
  border-top: var(--faq-rim);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--slate);
}

.page-faq .faq-section--start .faq-figure {
  border-color: rgba(7, 19, 15, 0.16);
  background: var(--paper-dim);
}

.page-faq .faq-section--start .faq-figure figcaption {
  border-top-color: rgba(7, 19, 15, 0.16);
  color: rgba(7, 19, 15, 0.6);
}

/* ---------- faq items ---------- */
.page-faq .faq-list {
  display: grid;
}

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

.page-faq .faq-item__sum {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  padding: 1rem 0;
  cursor: pointer;
  list-style: none;
  font-size: 1rem;
  font-weight: 500;
  line-height: 1.6;
  color: var(--paper);
  transition: color var(--dur) var(--ease);
}

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

.page-faq .faq-item__sum::after {
  content: "+";
  margin-left: auto;
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--whistle);
}

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

.page-faq .faq-item__sum:hover {
  color: var(--whistle);
}

.page-faq .faq-item__no {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--brick);
}

.page-faq .faq-item__body {
  padding: 0 0 1.1rem;
  padding-left: 1.75rem;
}

.page-faq .faq-item__body p {
  margin: 0;
  max-width: 62ch;
  font-size: 0.95rem;
  line-height: 1.85;
  color: rgba(244, 235, 221, 0.8);
}

.page-faq .faq-section--start .faq-item {
  border-top-color: rgba(7, 19, 15, 0.16);
}

.page-faq .faq-section--start .faq-item__sum {
  color: var(--ink);
}

.page-faq .faq-section--start .faq-item__sum::after {
  color: var(--brick-deep);
}

.page-faq .faq-section--start .faq-item__no {
  color: var(--brick-deep);
}

.page-faq .faq-section--start .faq-item__body p {
  color: rgba(7, 19, 15, 0.78);
}

/* ---------- R12 index band ---------- */
.page-faq .faq-indices {
  list-style: none;
  margin: 0 0 clamp(1.25rem, 3vw, 1.75rem);
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.5rem;
}

.page-faq .faq-indices li {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  padding: 0.55rem 0.65rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-s);
  background: rgba(20, 57, 46, 0.62);
}

.page-faq .faq-indices b {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.06em;
  color: var(--whistle);
  flex: 0 0 auto;
}

.page-faq .faq-indices span {
  font-size: 0.8125rem;
  line-height: 1.4;
  color: rgba(244, 235, 221, 0.82);
}

@media (min-width: 640px) {
  .page-faq .faq-indices {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-indices {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

/* ---------- contact ---------- */
.page-faq .faq-contact {
  margin-top: clamp(1.5rem, 4vw, 2.5rem);
  border: 1px solid var(--line);
  border-top: 4px solid var(--brick);
  border-radius: var(--radius-l);
  background: var(--stand-800);
  padding: clamp(1.25rem, 3vw, 2.25rem);
}

.page-faq .faq-contact__title {
  margin: 0 0 1.1rem;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--whistle);
}

.page-faq .faq-contact__grid {
  display: grid;
  gap: 1rem;
}

.page-faq .faq-contact__item {
  display: grid;
  gap: 0.35rem;
  align-content: start;
  padding-bottom: 0.85rem;
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-contact__key {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  color: var(--slate);
}

.page-faq .faq-contact__value {
  font-size: 0.9375rem;
  line-height: 1.6;
  color: var(--paper);
  word-break: break-word;
}

.page-faq .faq-contact__value--sm {
  font-size: 0.875rem;
  color: rgba(244, 235, 221, 0.84);
}

.page-faq .faq-copy {
  justify-self: start;
  margin-top: 0.15rem;
  padding: 0.35rem 0.7rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-capsule);
  background: transparent;
  color: var(--whistle);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  cursor: pointer;
  min-height: 32px;
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-faq .faq-copy:hover {
  border-color: var(--whistle);
  background: rgba(240, 194, 76, 0.1);
}

.page-faq .faq-copy-status {
  margin: 0.65rem 0 0;
  min-height: 1.2em;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--whistle);
}

.page-faq .faq-contact__links {
  list-style: none;
  margin: 1.1rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.55rem;
}

.page-faq .faq-contact__links a {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9rem;
  color: var(--paper);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  padding-bottom: 0.2rem;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .faq-contact__links a::before {
  content: "→";
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--brick);
}

.page-faq .faq-contact__links a:hover {
  color: var(--whistle);
  border-bottom-color: var(--whistle);
}

@media (min-width: 760px) {
  .page-faq .faq-contact__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.5rem;
  }

  .page-faq .faq-contact__item {
    border-bottom: 0;
    border-left: 1px solid var(--line-soft);
    padding: 0 0 0 1rem;
  }

  .page-faq .faq-contact__links {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.7rem 1.5rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-quick__list a,
  .page-faq .faq-toc__list a,
  .page-faq .faq-item__sum,
  .page-faq .faq-copy,
  .page-faq .faq-contact__links a {
    transition: none;
  }
}
<<<END>>>