.page-faq {
  --faq-rule: rgba(201, 212, 210, .14);
  --faq-col: 300px;
  --faq-gap: clamp(32px, 5vw, 76px);
  background: var(--c-ink);
  color: var(--c-silver);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: calc(var(--header-h) + clamp(52px, 8vw, 104px)) 0 clamp(34px, 5vw, 60px);
  background: linear-gradient(180deg, var(--c-night) 0%, var(--c-ink) 100%);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -22%;
  right: -18%;
  width: min(760px, 80vw);
  height: min(760px, 80vw);
  background: radial-gradient(closest-side, rgba(255, 106, 26, .17), transparent 72%);
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: min(560px, 58vw);
  height: 6px;
  background: linear-gradient(90deg, var(--c-signal), rgba(255, 106, 26, 0));
  transform: skewX(-34deg);
  transform-origin: left bottom;
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero__title {
  margin: 16px 0 22px;
  font-size: clamp(36px, 7.4vw, 86px);
  font-weight: 900;
  line-height: 1.04;
  letter-spacing: -.03em;
  color: var(--c-white);
}

.page-faq .faq-hero__title br {
  display: none;
}

.page-faq .faq-hero__lede {
  max-width: 40ch;
  margin: 0;
  color: var(--c-silver);
}

.page-faq .faq-facts {
  display: flex;
  flex-wrap: wrap;
  list-style: none;
  margin: clamp(30px, 4.5vw, 50px) 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-faq .faq-facts li {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 16px 0 0 14px;
  margin-right: clamp(22px, 4vw, 52px);
  border-left: 2px solid var(--c-steel);
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--c-mist);
}

.page-faq .faq-facts li:first-child {
  border-left-color: var(--c-signal);
}

.page-faq .faq-facts .mono {
  font-size: 18px;
  font-weight: 700;
  color: var(--c-white);
}

/* ---------- 主体分栏 ---------- */
.page-faq .faq-shell {
  padding: clamp(38px, 6vw, 72px) 0 clamp(64px, 9vw, 124px);
}

.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--faq-gap);
  align-items: start;
}

/* ---------- 左栏 ---------- */
.page-faq .faq-filter {
  padding: 18px;
  margin-bottom: 22px;
  background: var(--c-night);
  border: 1px solid var(--line);
  clip-path: var(--clip-cut);
}

.page-faq .faq-filter__label {
  display: block;
  margin-bottom: 10px;
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--c-mist);
}

.page-faq .faq-filter__input {
  width: 100%;
  padding: 11px 13px;
  font: inherit;
  font-size: 15px;
  color: var(--c-white);
  background: var(--c-ink);
  border: 1px solid var(--line);
  clip-path: var(--clip-cut-alt);
  outline: none;
  transition: border-color .16s var(--ease), box-shadow .16s var(--ease);
}

.page-faq .faq-filter__input::placeholder {
  color: var(--c-mist);
  opacity: .8;
}

.page-faq .faq-filter__input:hover {
  border-color: var(--line-strong);
}

.page-faq .faq-filter__input:focus-visible {
  border-color: var(--c-signal);
  box-shadow: 0 0 0 2px var(--tint-signal);
}

.page-faq .faq-filter__hint {
  margin: 10px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--c-mist);
}

.page-faq .faq-toc__title {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--c-mist);
}

.page-faq .faq-toc__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 8px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-faq .faq-toc__item {
  flex: 0 0 auto;
}

.page-faq .faq-toc__link {
  display: flex;
  align-items: baseline;
  gap: 9px;
  padding: 9px 14px;
  font-size: 14px;
  white-space: nowrap;
  color: var(--c-silver);
  text-decoration: none;
  border-bottom: 2px solid var(--c-steel);
  transition: border-color .16s var(--ease), background-color .16s var(--ease), color .16s var(--ease);
}

.page-faq .faq-toc__link .mono {
  font-size: 11px;
  color: var(--c-mist);
}

.page-faq .faq-toc__link:hover,
.page-faq .faq-toc__link:focus-visible {
  color: var(--c-white);
  background: var(--tint-signal);
  border-bottom-color: var(--c-signal);
}

.page-faq .faq-toc__link:active {
  background: rgba(255, 106, 26, .2);
}

.page-faq .faq-aside__note {
  margin: 18px 0 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--c-mist);
}

.page-faq .faq-aside__note a {
  color: var(--c-silver);
  text-decoration: none;
  border-bottom: 1px solid var(--line-strong);
  transition: border-color .16s var(--ease), color .16s var(--ease);
}

.page-faq .faq-aside__note a:hover,
.page-faq .faq-aside__note a:focus-visible {
  color: var(--c-signal);
  border-bottom-color: var(--c-signal);
}

/* ---------- 问答主体 ---------- */
.page-faq .faq-group {
  scroll-margin-top: calc(var(--header-h) + 24px);
}

.page-faq .faq-group + .faq-group {
  margin-top: clamp(52px, 8vw, 104px);
}

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  gap: 16px;
  padding-bottom: 16px;
  border-bottom: 2px solid var(--line-strong);
}

.page-faq .faq-group__num {
  font-family: var(--font-mono);
  font-size: clamp(26px, 3.6vw, 42px);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -.02em;
  color: transparent;
  -webkit-text-stroke: 1px var(--c-steel);
}

.page-faq .faq-group__head .h2 {
  margin: 0;
  font-size: clamp(23px, 3.4vw, 36px);
  font-weight: 800;
  letter-spacing: -.02em;
  color: var(--c-white);
}

.page-faq .faq-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-item {
  padding: 24px 4px 24px 18px;
  border-left: 2px solid transparent;
  border-bottom: 1px solid var(--faq-rule);
  transition: border-color .16s var(--ease), background-color .16s var(--ease);
}

.page-faq .faq-item:hover {
  border-left-color: var(--c-signal);
  background: linear-gradient(90deg, var(--tint-signal), transparent 62%);
}

.page-faq .faq-q {
  margin: 0 0 10px;
  font-size: clamp(17px, 1.5vw, 21px);
  font-weight: 700;
  line-height: 1.5;
  letter-spacing: -.01em;
  color: var(--c-white);
}

.page-faq .faq-a {
  max-width: 64ch;
  margin: 0;
  font-size: 15.5px;
  line-height: 1.82;
  color: var(--c-silver);
}

.page-faq .faq-a + .faq-a {
  margin-top: 12px;
}

.page-faq .faq-a a {
  color: var(--c-white);
  text-decoration: none;
  border-bottom: 1px solid var(--c-signal);
  transition: color .16s var(--ease);
}

.page-faq .faq-a a:hover,
.page-faq .faq-a a:focus-visible {
  color: var(--c-signal);
}

.page-faq .faq-steps {
  display: grid;
  gap: 8px;
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-steps li {
  display: flex;
  gap: 12px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--c-silver);
}

.page-faq .faq-steps .mono {
  flex: 0 0 auto;
  min-width: 16px;
  font-weight: 700;
  color: var(--c-signal);
}

/* ---------- 图版 ---------- */
.page-faq .faq-figure {
  margin: 0 0 clamp(22px, 3.6vw, 36px);
  background: var(--c-night);
  border: 1px solid var(--line);
  clip-path: var(--clip-cut);
  overflow: hidden;
}

.page-faq .faq-figure --wide,
.page-faq .faq-figure.faq-figure--wide {
  clip-path: var(--clip-cut-alt);
}

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

.page-faq .faq-figure figcaption {
  padding: 12px 18px;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--c-mist);
  border-top: 1px solid var(--line);
}

/* ---------- 页尾联系卡 ---------- */
.page-faq .faq-contact {
  display: grid;
  gap: clamp(24px, 3.4vw, 40px);
  padding: clamp(24px, 4vw, 46px);
  background: linear-gradient(140deg, var(--c-steel), var(--c-night) 62%);
  border: 1px solid var(--line-strong);
  clip-path: var(--clip-cut);
}

.page-faq .faq-contact .h2 {
  margin: 12px 0 16px;
  font-size: clamp(24px, 3.6vw, 38px);
  font-weight: 800;
  letter-spacing: -.02em;
  color: var(--c-white);
}

.page-faq .faq-contact__list {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-contact__item {
  padding-top: 12px;
  border-top: 1px solid var(--line);
}

.page-faq .faq-contact__k {
  display: block;
  margin-bottom: 6px;
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--c-mist);
}

.page-faq .faq-contact__v {
  font-size: 15px;
  line-height: 1.7;
  color: var(--c-white);
  word-break: break-word;
}

/* ---------- 桌面端 ---------- */
@media (min-width: 760px) {
  .page-faq .faq-contact {
    grid-template-columns: 1.05fr .95fr;
    align-items: start;
  }

  .page-faq .faq-hero__title br {
    display: inline;
  }
}

@media (min-width: 980px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-col) minmax(0, 1fr);
    gap: clamp(40px, 5vw, 84px);
  }

  .page-faq .faq-aside {
    position: sticky;
    top: calc(var(--header-h) + 26px);
  }

  .page-faq .faq-toc__list {
    display: grid;
    gap: 2px;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-toc__item {
    flex: initial;
  }

  .page-faq .faq-toc__link {
    padding: 10px 12px;
    border-bottom: 0;
    border-left: 2px solid transparent;
  }

  .page-faq .faq-toc__link:hover,
  .page-faq .faq-toc__link:focus-visible {
    border-left-color: var(--c-signal);
  }
}

@media (max-width: 480px) {
  .page-faq .faq-facts li {
    margin-right: 18px;
  }

  .page-faq .faq-item {
    padding-left: 14px;
  }
}
<<<END>>>