.page-faq {
  --faq-index-w: 236px;
  --faq-indent: 58px;
  --faq-top-offset: 92px;
  background:
    radial-gradient(920px 520px at 88% -8%, rgba(70, 242, 200, 0.13), transparent 62%),
    radial-gradient(720px 420px at 2% 34%, rgba(255, 122, 51, 0.07), transparent 70%),
    var(--ink-900);
  color: var(--paper-100);
  font-family: var(--font-body);
  overflow-x: hidden;
  padding-bottom: clamp(56px, 9vw, 104px);
}

.page-faq .crumbs {
  padding-top: clamp(18px, 2.6vw, 30px);
}

.page-faq .crumbs a {
  color: var(--mist-300);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-faq .crumbs a:hover {
  color: var(--cyan-400);
  border-bottom-color: var(--cyan-400);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 3.4vw, 44px);
  padding: clamp(16px, 2.4vw, 28px) 0 clamp(30px, 4.6vw, 56px);
  border-bottom: 1px solid var(--line-600);
}

.page-faq .faq-hero h1 {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(40px, 6.6vw, 82px);
  line-height: 0.98;
  letter-spacing: -0.02em;
}

.page-faq .faq-hero__intro {
  margin: 20px 0 0;
  max-width: 54ch;
  font-size: var(--step-0);
  line-height: 1.8;
  color: var(--mist-300);
}

.page-faq .faq-hero__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px 16px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-hero__stats .stat {
  border-left: 2px solid var(--line-600);
  padding-left: 12px;
}

.page-faq .faq-hero__stats .stat__value {
  display: block;
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--cyan-400);
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-hero__stats .stat__label {
  display: block;
  margin-top: 4px;
  font-size: 12px;
  line-height: 1.5;
  color: var(--mist-300);
}

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

.page-faq .media-frame {
  overflow: hidden;
  border-radius: var(--radius-a);
  background: var(--turf-700);
}

.page-faq .media-frame img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-faq .figure__cap {
  margin: 10px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.6;
  letter-spacing: 0.04em;
  color: var(--mist-500);
}

/* ---------- 主体双栏 ---------- */
.page-faq .faq-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 3.4vw, 48px);
  padding-top: clamp(30px, 4vw, 52px);
  align-items: start;
}

.page-faq .faq-index {
  border: 1px solid var(--line-600);
  border-radius: var(--radius-b);
  background: rgba(11, 31, 25, 0.78);
  padding: 18px 16px;
}

.page-faq .faq-index__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--cyan-400);
}

.page-faq .faq-index__list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 4px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-index__list a {
  display: grid;
  grid-template-columns: 24px minmax(0, 1fr) auto;
  gap: 8px;
  align-items: center;
  padding: 9px 8px;
  border-radius: 8px 18px 8px 18px;
  color: var(--paper-100);
  text-decoration: none;
  font-size: 14px;
  line-height: 1.4;
  transition: background 0.18s var(--ease), color 0.18s var(--ease);
}

.page-faq .faq-index__list a:hover,
.page-faq .faq-index__list a:focus-visible {
  background: var(--turf-700);
  color: var(--cyan-400);
}

.page-faq .faq-index__num,
.page-faq .faq-index__count {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--mist-500);
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-index__note {
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--line-600);
  font-size: 12px;
  line-height: 1.6;
  color: var(--mist-500);
}

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  scroll-margin-top: var(--faq-top-offset);
}

.page-faq .faq-group + .faq-group {
  margin-top: clamp(34px, 4.6vw, 58px);
}

.page-faq .faq-group--tint {
  border: 1px solid var(--line-600);
  border-radius: var(--radius-a);
  background: linear-gradient(180deg, rgba(18, 49, 42, 0.9), rgba(11, 31, 25, 0.42));
  padding: clamp(16px, 2.4vw, 28px);
}

.page-faq .group-head {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line-600);
}

.page-faq .group-num {
  flex: none;
  padding-top: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--cyan-400);
  font-variant-numeric: tabular-nums;
}

.page-faq .group-head h2 {
  margin: 0;
  font-size: clamp(22px, 2.6vw, 30px);
  font-weight: 400;
  line-height: 1.2;
  letter-spacing: 0.01em;
}

.page-faq .group-note {
  margin: 6px 0 0;
  font-size: 13px;
  line-height: 1.6;
  color: var(--mist-300);
}

.page-faq .faq-group:target .group-head h2 {
  color: var(--cyan-400);
}

.page-faq .faq-group:target .group-num {
  color: var(--orange-500);
}

/* ---------- 配图 ---------- */
.page-faq .faq-fig {
  margin: 18px 0 6px auto;
  width: min(100%, 300px);
}

/* ---------- 问答条目 ---------- */
.page-faq .q {
  border-bottom: 1px solid var(--line-600);
  transition: background 0.18s var(--ease);
}

.page-faq .q:hover {
  background: rgba(18, 49, 42, 0.85);
}

.page-faq .q[open] {
  background: rgba(11, 31, 25, 0.92);
}

.page-faq .q > summary {
  position: relative;
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr) 22px;
  gap: 10px;
  align-items: start;
  padding: 17px 12px 17px 14px;
  list-style: none;
  cursor: pointer;
}

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

.page-faq .q > summary::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: transparent;
  transition: background 0.18s var(--ease);
}

.page-faq .q[open] > summary::before {
  background: var(--cyan-400);
}

.page-faq .q > summary:focus-visible {
  outline: 2px solid var(--orange-500);
  outline-offset: -2px;
}

.page-faq .q__num {
  padding-top: 5px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--mist-500);
}

.page-faq .q__title {
  font-size: clamp(15px, 1.3vw, 17px);
  font-weight: 500;
  line-height: 1.6;
  color: var(--paper-100);
}

.page-faq .q[open] .q__title {
  color: var(--cyan-400);
}

.page-faq .q__mark {
  position: relative;
  width: 22px;
  height: 22px;
  margin-top: 2px;
  border: 1px solid var(--line-600);
  border-radius: 50%;
  transition: border-color 0.18s var(--ease);
}

.page-faq .q__mark::before,
.page-faq .q__mark::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  background: var(--mist-300);
}

.page-faq .q__mark::before {
  width: 9px;
  height: 1px;
}

.page-faq .q__mark::after {
  width: 1px;
  height: 9px;
  transition: opacity 0.18s var(--ease);
}

.page-faq .q[open] .q__mark {
  border-color: var(--cyan-400);
}

.page-faq .q[open] .q__mark::before {
  background: var(--cyan-400);
}

.page-faq .q[open] .q__mark::after {
  opacity: 0;
}

.page-faq .q__body {
  max-width: 70ch;
  padding: 0 16px 22px var(--faq-indent);
}

.page-faq .q__body p {
  margin: 0 0 10px;
  font-size: var(--step-0);
  line-height: 1.78;
  color: var(--mist-300);
}

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

.page-faq .q__body .path {
  display: flex;
  gap: 8px;
  align-items: flex-start;
  margin-top: 12px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--paper-100);
}

.page-faq .q__body .path::before {
  content: "→";
  flex: none;
  font-family: var(--font-mono);
  color: var(--orange-500);
}

.page-faq .q__body .path a {
  color: var(--orange-500);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 122, 51, 0.45);
  transition: border-color 0.18s var(--ease), color 0.18s var(--ease);
}

.page-faq .q__body .path a:hover {
  color: var(--amber-300);
  border-bottom-color: var(--amber-300);
}

@keyframes faq-slide-in {
  from {
    opacity: 0;
    transform: translateX(-10px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.page-faq .q[open] .q__body {
  animation: faq-slide-in 0.28s var(--ease) both;
}

/* ---------- 下一步 ---------- */
.page-faq .faq-next {
  margin-top: clamp(44px, 6vw, 80px);
  padding-top: clamp(24px, 3vw, 36px);
  border-top: 1px solid var(--line-600);
}

.page-faq .faq-next h2 {
  margin: 0 0 20px;
  font-size: clamp(22px, 2.8vw, 32px);
  font-weight: 400;
  line-height: 1.25;
}

.page-faq .faq-next__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

.page-faq .faq-next__card {
  display: block;
  padding: 20px 18px;
  border: 1px solid var(--line-600);
  border-radius: var(--radius-b);
  background: rgba(11, 31, 25, 0.62);
  color: var(--paper-100);
  text-decoration: none;
  transition: background 0.18s var(--ease), border-color 0.18s var(--ease), transform 0.18s var(--ease);
}

.page-faq .faq-next__card:hover,
.page-faq .faq-next__card:focus-visible {
  background: var(--turf-700);
  border-color: var(--cyan-400);
  transform: translateY(-2px);
}

.page-faq .faq-next__kicker {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--cyan-400);
}

.page-faq .faq-next__card strong {
  display: block;
  margin: 8px 0 6px;
  font-size: 18px;
  font-weight: 500;
}

.page-faq .faq-next__card p {
  margin: 0;
  font-size: 13px;
  line-height: 1.72;
  color: var(--mist-300);
}

/* ---------- 断点 ---------- */
@media (min-width: 560px) {
  .page-faq .faq-hero__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 700px) {
  .page-faq {
    --faq-indent: 68px;
  }

  .page-faq .q > summary {
    grid-template-columns: 40px minmax(0, 1fr) 24px;
    gap: 12px;
    padding: 18px 16px 18px 16px;
  }

  .page-faq .q__body {
    padding-right: 28px;
  }

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

@media (min-width: 900px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.28fr) minmax(0, 1fr);
    align-items: end;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-body {
    grid-template-columns: var(--faq-index-w) minmax(0, 1fr);
    gap: clamp(32px, 4vw, 64px);
  }

  .page-faq .faq-index {
    position: sticky;
    top: var(--faq-top-offset);
    align-self: start;
  }

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

@media (max-width: 420px) {
  .page-faq .faq-index__list {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .q[open] .q__body {
    animation: none;
  }

  .page-faq .q,
  .page-faq .q__mark,
  .page-faq .q__mark::after,
  .page-faq .faq-next__card,
  .page-faq .faq-index__list a {
    transition: none;
  }

  .page-faq .faq-next__card:hover,
  .page-faq .faq-next__card:focus-visible {
    transform: none;
  }
}
<<<END>>>