.page-faq {
  --faq-panel: rgba(22, 24, 28, .72);
  --faq-panel-deep: rgba(16, 18, 22, .92);
  --faq-rule: rgba(242, 240, 236, .12);
  --faq-rule-strong: rgba(242, 240, 236, .26);
  --faq-gold-soft: rgba(201, 162, 39, .4);
  display: block;
  color: var(--fh-bone);
  background:
    radial-gradient(110% 55% at 88% -8%, rgba(79, 195, 247, .10), transparent 62%),
    radial-gradient(90% 50% at -5% 22%, rgba(255, 90, 31, .11), transparent 66%),
    var(--fh-ink);
}

/* ---------- 面包屑 ---------- */
.page-faq .faq-crumb {
  margin-bottom: clamp(20px, 3vw, 34px);
}

.page-faq .faq-crumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  list-style: none;
  margin: 0;
  padding: 0;
  font-family: var(--fh-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--fh-dim);
}

.page-faq .faq-crumb__list li {
  display: inline-flex;
  align-items: center;
}

.page-faq .faq-crumb__list li + li::before {
  content: "/";
  margin: 0 8px;
  color: rgba(242, 240, 236, .22);
}

.page-faq .faq-crumb__list a {
  color: var(--fh-mist);
  text-decoration: none;
  transition: color .2s var(--fh-ease);
}

.page-faq .faq-crumb__list a:hover,
.page-faq .faq-crumb__list a:focus-visible {
  color: var(--fh-lava);
}

.page-faq .faq-crumb__list [aria-current="page"] {
  color: var(--fh-bone);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding-block: clamp(20px, 3vw, 34px) clamp(34px, 5vw, 58px);
}

.page-faq .faq-hero__head {
  display: grid;
  gap: 26px;
  margin-bottom: clamp(28px, 4vw, 46px);
}

.page-faq .faq-hero__title {
  margin: 0 0 16px;
  font-size: clamp(29px, 5.2vw, 50px);
  line-height: 1.18;
  letter-spacing: -.012em;
}

.page-faq .faq-hero__lede {
  margin: 0;
  color: var(--fh-mist);
  max-width: 60ch;
}

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

/* 热门问题卡片 */
.page-faq .faq-hot {
  position: relative;
  padding: 20px 22px 20px 26px;
  border: 1px solid var(--faq-rule);
  border-radius: var(--fh-radius);
  background: linear-gradient(158deg, rgba(255, 90, 31, .12), rgba(11, 12, 14, .55) 58%);
  overflow: hidden;
}

.page-faq .faq-hot::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--fh-lava), var(--fh-amber));
}

.page-faq .faq-hot__label {
  margin: 0 0 12px;
  font-family: var(--fh-mono);
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--fh-amber);
}

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

.page-faq .faq-hot__list a {
  position: relative;
  display: block;
  padding-left: 17px;
  color: var(--fh-bone);
  font-size: 15px;
  line-height: 1.5;
  text-decoration: none;
  transition: color .2s var(--fh-ease);
}

.page-faq .faq-hot__list a::before {
  content: "↗";
  position: absolute;
  left: 0;
  top: 2px;
  font-size: 12px;
  color: var(--fh-lava);
}

.page-faq .faq-hot__list a:hover,
.page-faq .faq-hot__list a:focus-visible {
  color: var(--fh-lava);
}

/* ---------- 主布局：左目录 + 右问答 ---------- */
.page-faq .faq-board {
  padding-bottom: clamp(52px, 7vw, 96px);
}

.page-faq .faq-board__grid {
  display: grid;
  gap: 30px;
}

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

/* 搜索框 */
.page-faq .faq-search {
  padding: 14px 16px;
  border: 1px solid var(--faq-rule);
  border-radius: var(--fh-radius-sm);
  background: var(--faq-panel-deep);
}

.page-faq .faq-search .fh-search__label {
  display: block;
  margin-bottom: 8px;
  font-family: var(--fh-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--fh-mist);
}

.page-faq .faq-search .fh-search__input {
  width: 100%;
  box-sizing: border-box;
  padding: 10px 12px;
  border: 1px solid var(--faq-rule-strong);
  border-radius: 6px;
  background: rgba(11, 12, 14, .92);
  color: var(--fh-bone);
  font-family: var(--fh-sans);
  font-size: 14px;
  line-height: 1.5;
}

.page-faq .faq-search .fh-search__input::placeholder {
  color: var(--fh-dim);
}

.page-faq .faq-search .fh-search__input:focus {
  outline: none;
  border-color: var(--fh-ice);
  box-shadow: 0 0 0 3px rgba(79, 195, 247, .18);
}

/* 目录 */
.page-faq .faq-toc__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
  border-left: 1px solid var(--faq-rule);
}

.page-faq .faq-toc__list a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin-left: -1px;
  padding: 10px 12px;
  border-left: 2px solid transparent;
  color: var(--fh-mist);
  font-size: 14px;
  line-height: 1.45;
  text-decoration: none;
  transition: color .2s var(--fh-ease), border-color .2s var(--fh-ease), background-color .2s var(--fh-ease);
}

.page-faq .faq-toc__list a:hover,
.page-faq .faq-toc__list a:focus-visible {
  color: var(--fh-bone);
  border-left-color: var(--fh-lava);
  background: rgba(255, 90, 31, .08);
}

.page-faq .faq-toc__num {
  flex: none;
  font-family: var(--fh-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--fh-lava);
}

/* ---------- 问答分组 ---------- */
.page-faq .faq-group {
  padding-top: clamp(34px, 5vw, 62px);
  scroll-margin-top: 108px;
}

.page-faq .faq-group:first-child {
  padding-top: 0;
}

.page-faq .faq-group + .faq-group {
  border-top: 1px solid var(--faq-rule);
}

.page-faq .faq-group__head {
  margin-bottom: 20px;
}

.page-faq .faq-group__num {
  margin: 0 0 8px;
  font-family: var(--fh-mono);
  font-size: 12px;
  letter-spacing: .24em;
  color: var(--fh-lava);
}

.page-faq .faq-group__title {
  margin: 0 0 10px;
}

.page-faq .faq-group__sub {
  margin: 0;
  max-width: 60ch;
  color: var(--fh-mist);
  font-size: 15px;
  line-height: 1.72;
}

.page-faq .faq-group__head::after {
  content: "";
  display: block;
  width: 92px;
  height: 1px;
  margin-top: 18px;
  background: linear-gradient(90deg, var(--fh-lava), rgba(255, 176, 32, .12));
  transform: skewX(var(--fh-skew));
  transform-origin: left center;
}

.page-faq .faq-figure {
  margin: 0 0 24px;
}

/* ---------- 问答条目 ---------- */
.page-faq .faq-list {
  border-top: 1px solid var(--faq-rule);
}

.page-faq .faq-q {
  position: relative;
  border-bottom: 1px solid var(--faq-rule);
}

.page-faq .faq-q::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 1px;
  background: linear-gradient(180deg, transparent, rgba(79, 195, 247, .45), transparent);
  opacity: 0;
  transition: opacity .3s var(--fh-ease);
}

.page-faq .faq-q[open]::before {
  opacity: 1;
}

.page-faq .faq-q__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: start;
  gap: 11px;
  padding: 15px 4px 15px 13px;
  cursor: pointer;
  list-style: none;
  transition: background-color .2s var(--fh-ease);
}

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

.page-faq .faq-q__head:hover {
  background: rgba(242, 240, 236, .03);
}

.page-faq .faq-q__head:focus-visible {
  outline: 2px solid var(--fh-ice);
  outline-offset: -2px;
}

.page-faq .faq-q__idx {
  min-width: 20px;
  padding-top: 3px;
  font-family: var(--fh-mono);
  font-size: 11px;
  letter-spacing: .06em;
  color: var(--fh-dim);
  transition: color .2s var(--fh-ease);
}

.page-faq .faq-q[open] .faq-q__idx {
  color: var(--fh-ice);
}

.page-faq .faq-q__title {
  font-family: var(--fh-sans);
  font-weight: 700;
  font-size: 15.5px;
  line-height: 1.55;
  color: var(--fh-bone);
}

.page-faq .faq-q__mark {
  position: relative;
  flex: none;
  width: 14px;
  height: 14px;
  margin-top: 5px;
}

.page-faq .faq-q__mark::before,
.page-faq .faq-q__mark::after {
  content: "";
  position: absolute;
  background: var(--fh-lava);
  transition: transform .25s var(--fh-ease), opacity .25s var(--fh-ease);
}

.page-faq .faq-q__mark::before {
  left: 0;
  top: 6px;
  width: 14px;
  height: 2px;
}

.page-faq .faq-q__mark::after {
  left: 6px;
  top: 0;
  width: 2px;
  height: 14px;
}

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

.page-faq .faq-q__body {
  padding: 0 4px 20px 44px;
  animation: faqDrop .28s var(--fh-ease) both;
}

@keyframes faqDrop {
  from {
    opacity: 0;
    transform: translateY(-5px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.page-faq .faq-q__body p {
  margin: 0;
  max-width: 66ch;
  font-size: 15px;
  line-height: 1.82;
  color: var(--fh-mist);
}

.page-faq .faq-q__body p + p {
  margin-top: 10px;
}

.page-faq .faq-q__body a {
  color: var(--fh-ice);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-q__body a:hover {
  color: var(--fh-lava);
}

.page-faq .faq-cite {
  display: inline-block;
  padding: 6px 11px;
  border: 1px dashed var(--faq-gold-soft);
  border-radius: 6px;
  background: rgba(201, 162, 39, .07);
  font-family: var(--fh-mono);
  font-size: 12px;
  letter-spacing: .02em;
  color: var(--fh-gold);
}

/* ---------- 结尾行动区 ---------- */
.page-faq .faq-next {
  position: relative;
  border-top: 1px solid var(--faq-rule);
  background:
    linear-gradient(140deg, rgba(255, 90, 31, .14), transparent 52%),
    linear-gradient(320deg, rgba(27, 58, 92, .5), transparent 60%);
}

.page-faq .faq-next__inner {
  padding-block: clamp(44px, 6vw, 76px);
}

.page-faq .faq-next__label {
  margin: 0 0 10px;
  font-family: var(--fh-mono);
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--fh-amber);
}

.page-faq .faq-next__title {
  margin: 0 0 12px;
}

.page-faq .faq-next__text {
  margin: 0 0 24px;
  max-width: 58ch;
  color: var(--fh-mist);
  font-size: 15px;
  line-height: 1.78;
}

.page-faq .faq-next__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-faq .faq-q__head {
    gap: 15px;
    padding: 17px 6px 17px 16px;
  }

  .page-faq .faq-q__title {
    font-size: 16.5px;
  }

  .page-faq .faq-q__body {
    padding-left: 57px;
  }
}

@media (min-width: 920px) {
  .page-faq .faq-hero__head {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, .88fr);
    gap: 52px;
    align-items: end;
  }

  .page-faq .faq-hero__lead {
    padding-right: 8px;
  }
}

@media (min-width: 980px) {
  .page-faq .faq-board__grid {
    grid-template-columns: minmax(226px, 264px) minmax(0, 1fr);
    gap: 56px;
    align-items: start;
  }

  .page-faq .faq-side__inner {
    position: sticky;
    top: 104px;
    max-height: calc(100vh - 128px);
    overflow-y: auto;
    padding-right: 4px;
    scrollbar-width: thin;
  }

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

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

  .page-faq .faq-q__mark::before,
  .page-faq .faq-q__mark::after,
  .page-faq .faq-toc__list a {
    transition: none;
  }
}
<<<END>>>