.page-faq {
  background: var(--paper);
  color: var(--ink);
  overflow-x: hidden;
}

.page-faq *,
.page-faq *::before,
.page-faq *::after {
  box-sizing: border-box;
}

.page-faq .faq-hero,
.page-faq .faq-entry,
.page-faq .faq-follow,
.page-faq .faq-cats,
.page-faq .faq-qa {
  scroll-margin-top: 96px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  background: var(--ink);
  color: var(--white);
  padding: clamp(20px, 4vw, 34px) 0 clamp(44px, 7vw, 84px);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -25%;
  right: -18%;
  width: min(640px, 92vw);
  height: 150%;
  background: linear-gradient(145deg, rgba(226, 58, 46, .85), rgba(255, 107, 53, .34) 46%, rgba(7, 16, 24, 0) 72%);
  transform: skewX(-14deg);
  pointer-events: none;
}

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

.page-faq .faq-hero__inner::before {
  content: "";
  position: absolute;
  left: 0;
  top: 4px;
  bottom: 4px;
  width: 1px;
  background: linear-gradient(180deg, rgba(201, 162, 39, 0), var(--gold) 30%, rgba(201, 162, 39, 0));
  opacity: .55;
  pointer-events: none;
}

.page-faq .faq-hero .breadcrumb__link,
.page-faq .faq-hero .breadcrumb__sep {
  color: rgba(255, 255, 255, .68);
}

.page-faq .faq-hero .breadcrumb__current {
  color: var(--jade-bright);
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 44px);
  margin-top: clamp(18px, 3vw, 30px);
}

.page-faq .faq-hero__copy h1 {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(34px, 7.4vw, 68px);
  line-height: 1.06;
  letter-spacing: -.02em;
  color: var(--white);
}

.page-faq .faq-hero__lead {
  margin: 16px 0 0;
  max-width: 46ch;
  font-size: clamp(15px, 1.9vw, 17px);
  line-height: 1.75;
  color: rgba(255, 255, 255, .82);
}

.page-faq .faq-hero__steps {
  list-style: none;
  margin: clamp(20px, 3vw, 26px) 0 0;
  padding: 0;
  max-width: 420px;
}

.page-faq .faq-hero__step + .faq-hero__step {
  border-top: 1px solid var(--line-on-dark);
}

.page-faq .faq-hero__step-link {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 12px 0;
  color: var(--white);
  text-decoration: none;
  font-size: 15px;
  font-weight: 600;
  transition: transform .2s var(--ease), color .2s var(--ease);
}

.page-faq .faq-hero__step-link:hover {
  transform: translateX(4px);
  color: var(--jade-bright);
}

.page-faq .faq-hero__num {
  flex: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--gold);
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(20px, 3vw, 28px);
}

.page-faq .faq-hero__figure {
  margin: 0;
  max-width: 320px;
}

.page-faq .faq-hero__figure .img-frame {
  aspect-ratio: 3 / 4;
  border-color: rgba(201, 162, 39, .5);
}

.page-faq .faq-hero__caption {
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: rgba(255, 255, 255, .62);
}

/* ---------- 三步卡片 ---------- */
.page-faq .faq-steps {
  background: var(--paper);
  padding: clamp(44px, 7vw, 88px) 0;
}

.page-faq .faq-steps__head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 12px 24px;
}

.page-faq .faq-steps__head h2 {
  margin: 8px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(24px, 3.6vw, 38px);
  letter-spacing: -.02em;
  line-height: 1.2;
}

.page-faq .faq-steps__hint {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--gray);
}

.page-faq .faq-steps__list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-top: clamp(22px, 3vw, 34px);
}

.page-faq .faq-step {
  display: block;
  position: relative;
  padding: 20px 20px 18px;
  background: var(--white);
  border: 1px solid var(--line-on-light);
  border-top: 3px solid var(--flame);
  text-decoration: none;
  color: var(--ink);
  transition: transform .24s var(--ease), box-shadow .24s var(--ease);
}

.page-faq .faq-step:hover,
.page-faq .faq-step:focus-visible {
  transform: translateY(-3px);
  box-shadow: 0 12px 26px rgba(7, 16, 24, .1);
}

.page-faq .faq-step__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 32px;
  line-height: 1;
  color: var(--gold);
  letter-spacing: -.02em;
}

.page-faq .faq-step__title {
  margin: 10px 0 0;
  font-size: 19px;
  font-weight: 800;
  letter-spacing: -.01em;
}

.page-faq .faq-step__text {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.72;
  color: rgba(7, 16, 24, .74);
}

.page-faq .faq-step__inline {
  color: var(--flame);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-step__more {
  display: inline-block;
  margin-top: 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--ink);
  border-bottom: 1px solid var(--ember);
  padding-bottom: 2px;
}

/* ---------- 入口与栏目 ---------- */
.page-faq .faq-entry {
  background: var(--ink-2);
  color: var(--white);
  padding: clamp(44px, 7vw, 88px) 0;
}

.page-faq .faq-entry__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 46px);
}

.page-faq .faq-entry__aside h2 {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(24px, 3.6vw, 38px);
  line-height: 1.2;
  letter-spacing: -.02em;
  color: var(--white);
}

.page-faq .faq-entry__intro {
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.78;
  color: rgba(255, 255, 255, .74);
  max-width: 34ch;
}

.page-faq .faq-entry__nav {
  border: 1px solid var(--line-on-dark);
  background: rgba(255, 255, 255, .03);
  padding: 18px;
}

.page-faq .faq-entry__nav h3,
.page-faq .faq-cats h3 {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: .14em;
  color: var(--gold);
}

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

.page-faq .faq-entry__nav-list li {
  padding: 12px 0;
  font-size: 14px;
  line-height: 1.74;
  color: rgba(255, 255, 255, .78);
  border-bottom: 1px dashed var(--line-on-dark);
}

.page-faq .faq-entry__nav-list li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-faq .faq-entry__key {
  display: inline-block;
  margin-right: 10px;
  padding: 2px 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--jade-bright);
  border: 1px solid rgba(94, 234, 212, .42);
}

.page-faq .faq-cats {
  margin-top: 22px;
}

.page-faq .faq-cats__list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.page-faq .faq-cat {
  padding: 16px;
  background: var(--ink-3);
  border-left: 3px solid var(--jade);
}

.page-faq .faq-cat__title {
  margin: 0;
  font-size: 16px;
  font-weight: 800;
  color: var(--white);
}

.page-faq .faq-cat__text {
  margin: 8px 0 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: rgba(255, 255, 255, .74);
}

.page-faq .faq-cat__meta {
  margin: 12px 0 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--jade-bright);
}

/* ---------- 手机跟队 ---------- */
.page-faq .faq-follow {
  background: var(--paper-2);
  padding: clamp(44px, 7vw, 88px) 0;
}

.page-faq .faq-follow__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 48px);
}

.page-faq .faq-follow__copy h2 {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(24px, 3.6vw, 38px);
  line-height: 1.2;
  letter-spacing: -.02em;
}

.page-faq .faq-follow__list {
  list-style: none;
  margin: clamp(18px, 3vw, 26px) 0 0;
  padding: 0;
}

.page-faq .faq-follow__item {
  display: grid;
  grid-template-columns: 1fr;
  gap: 4px;
  padding: 14px 0;
  border-bottom: 1px dashed var(--line-on-light);
}

.page-faq .faq-follow__item strong {
  font-size: 16px;
  font-weight: 800;
  color: var(--ink);
}

.page-faq .faq-follow__item strong::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  margin-right: 8px;
  vertical-align: 3px;
  background: var(--flame);
}

.page-faq .faq-follow__item span {
  font-size: 14px;
  line-height: 1.74;
  color: rgba(7, 16, 24, .74);
}

.page-faq .faq-follow__note {
  margin: 18px 0 0;
  padding: 12px 14px;
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--ink);
  background: rgba(94, 234, 212, .28);
  border-left: 3px solid var(--jade);
}

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

.page-faq .faq-follow__figure .img-frame {
  aspect-ratio: 3 / 2;
}

.page-faq .faq-follow__caption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--gray);
}

/* ---------- 问答 ---------- */
.page-faq .faq-qa {
  background: var(--paper);
  padding: clamp(44px, 7vw, 88px) 0;
}

.page-faq .faq-qa__head h2 {
  margin: 8px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(24px, 3.6vw, 38px);
  line-height: 1.2;
  letter-spacing: -.02em;
}

.page-faq .faq-qa__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 36px);
  margin-top: clamp(20px, 3vw, 32px);
}

.page-faq .faq-qa__index-title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--gold);
}

.page-faq .faq-qa__index-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2px 10px;
}

.page-faq .faq-qa__index-list a {
  display: block;
  padding: 7px 0 7px 11px;
  border-left: 2px solid rgba(7, 16, 24, .14);
  font-size: 13px;
  line-height: 1.5;
  color: rgba(7, 16, 24, .68);
  text-decoration: none;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.page-faq .faq-qa__index-list a:hover,
.page-faq .faq-qa__index-list a:focus-visible {
  color: var(--flame);
  border-left-color: var(--flame);
}

.page-faq .faq-item {
  background: var(--white);
  border: 1px solid var(--line-on-light);
  margin-bottom: 10px;
  padding: 0 16px;
  scroll-margin-top: 100px;
  transition: border-color .2s var(--ease), box-shadow .2s var(--ease);
}

.page-faq .faq-item:target {
  border-color: var(--jade);
}

.page-faq .faq-item[open] {
  border-color: rgba(226, 58, 46, .42);
  box-shadow: 0 8px 20px rgba(7, 16, 24, .07);
}

.page-faq .faq-item__q {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 16px 0;
  cursor: pointer;
  list-style: none;
  font-size: 15.5px;
  font-weight: 700;
  line-height: 1.6;
  color: var(--ink);
}

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

.page-faq .faq-item__q::after {
  content: "+";
  margin-left: auto;
  flex: none;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1.3;
  color: var(--flame);
}

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

.page-faq .faq-item__no {
  flex: none;
  padding-top: 2px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--gold);
}

.page-faq .faq-item__a {
  padding: 0 0 18px;
  border-top: 1px solid var(--line-on-light);
  padding-top: 14px;
}

.page-faq .faq-item__a p {
  margin: 0 0 10px;
  max-width: 62ch;
  font-size: 14.5px;
  line-height: 1.78;
  color: rgba(7, 16, 24, .78);
}

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

.page-faq .faq-item__a a {
  color: var(--flame);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 企业咨询 ---------- */
.page-faq .faq-enterprise {
  background: var(--ink);
  color: var(--white);
  padding: clamp(44px, 7vw, 88px) 0;
}

.page-faq .faq-enterprise__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 46px);
}

.page-faq .faq-enterprise__copy h2 {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(24px, 3.6vw, 38px);
  line-height: 1.22;
  letter-spacing: -.02em;
  color: var(--white);
}

.page-faq .faq-enterprise__lead {
  margin: 14px 0 0;
  max-width: 48ch;
  font-size: 15px;
  line-height: 1.78;
  color: rgba(255, 255, 255, .78);
}

.page-faq .faq-enterprise__steps {
  list-style: none;
  margin: clamp(18px, 3vw, 26px) 0 0;
  padding: 0;
}

.page-faq .faq-enterprise__steps li {
  display: flex;
  gap: 12px;
  padding: 11px 0;
  font-size: 14.5px;
  line-height: 1.7;
  color: rgba(255, 255, 255, .8);
  border-top: 1px solid var(--line-on-dark);
}

.page-faq .faq-enterprise__n {
  flex: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--gold);
  padding-top: 3px;
}

.page-faq .faq-enterprise__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(18px, 3vw, 26px);
}

.page-faq .faq-enterprise__fine {
  margin: 16px 0 0;
  font-size: 13px;
  color: rgba(255, 255, 255, .6);
}

.page-faq .faq-enterprise__fine a {
  color: var(--jade-bright);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-enterprise__note {
  align-self: start;
  padding: 20px;
  background: rgba(25, 195, 177, .1);
  border: 1px solid rgba(94, 234, 212, .32);
  border-left: 3px solid var(--jade);
}

.page-faq .faq-enterprise__tag {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--jade-bright);
}

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

.page-faq .faq-enterprise__list li {
  padding: 9px 0 9px 16px;
  position: relative;
  font-size: 14px;
  line-height: 1.65;
  color: rgba(255, 255, 255, .84);
  border-bottom: 1px dashed rgba(255, 255, 255, .16);
}

.page-faq .faq-enterprise__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 17px;
  width: 6px;
  height: 6px;
  background: var(--ember);
}

.page-faq .faq-enterprise__list li:last-child {
  border-bottom: 0;
}

.page-faq .faq-enterprise__mail {
  margin: 14px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: rgba(255, 255, 255, .7);
  word-break: break-word;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-hero__figure {
    max-width: 380px;
  }

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

  .page-faq .faq-follow__item {
    grid-template-columns: 140px 1fr;
    gap: 14px;
    align-items: baseline;
  }

  .page-faq .faq-qa__index-list {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 880px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: 1.05fr .78fr;
    align-items: end;
  }

  .page-faq .faq-hero__figure {
    max-width: none;
  }

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

  .page-faq .faq-entry__grid {
    grid-template-columns: .46fr 1fr;
  }

  .page-faq .faq-entry__aside {
    position: sticky;
    top: 104px;
    align-self: start;
  }

  .page-faq .faq-follow__grid {
    grid-template-columns: 1fr 1fr;
    align-items: center;
  }

  .page-faq .faq-qa__grid {
    grid-template-columns: 250px 1fr;
  }

  .page-faq .faq-qa__index {
    position: sticky;
    top: 104px;
    align-self: start;
  }

  .page-faq .faq-qa__index-list {
    grid-template-columns: 1fr;
  }

  .page-faq .faq-enterprise__inner {
    grid-template-columns: 1.1fr .9fr;
    align-items: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-hero__step-link,
  .page-faq .faq-step,
  .page-faq .faq-item,
  .page-faq .faq-qa__index-list a {
    transition: none;
  }

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

当前页面专属 CSS，页面专属选择器全部限定在 .page-faq 作用域内
<<<END>>>