.page-faq {
  --faq-rule: 3px solid rgba(237, 239, 242, 0.22);
  --faq-pad-y: clamp(56px, 9vw, 118px);
  --faq-gutter-y: clamp(16px, 2.2vw, 26px);
  color: var(--paper);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding: clamp(84px, 12vw, 148px) 0 clamp(22px, 3vw, 38px);
}

.page-faq .faq-hero .breadcrumb {
  margin-bottom: clamp(20px, 3vw, 38px);
}

.page-faq .faq-hero h1 {
  font-family: var(--font-display);
  font-weight: 200;
  font-size: clamp(30px, 5.4vw, 70px);
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin: 16px 0 0;
  max-width: 14em;
  color: var(--paper);
}

.page-faq .faq-hero .lede {
  margin-top: clamp(18px, 2.4vw, 30px);
  max-width: 46ch;
  color: var(--mist);
}

/* ---------- 首屏配图 ---------- */
.page-faq .faq-figure {
  margin: 0 0 clamp(34px, 5vw, 62px);
  border: var(--frame) solid var(--line);
  box-shadow: var(--shadow-hard);
  background: var(--indigo);
  overflow: hidden;
  line-height: 0;
}

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

.page-faq .faq-figure--service {
  margin: clamp(34px, 5vw, 58px) 0 0;
  border-color: var(--line-cyan);
  box-shadow: var(--shadow-cyan);
}

/* ---------- 主题跳转条 ---------- */
.page-faq .faq-jump {
  display: grid;
  grid-template-columns: 1fr;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  margin-bottom: clamp(44px, 6vw, 84px);
}

.page-faq .faq-jump a {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 15px 2px;
  border-bottom: 1px solid var(--line-soft);
  color: var(--paper);
  text-decoration: none;
  font-size: 16px;
  transition: color var(--dur-fast) var(--ease), padding-left var(--dur-fast) var(--ease);
}

.page-faq .faq-jump a:last-child {
  border-bottom: 0;
}

.page-faq .faq-jump a:hover,
.page-faq .faq-jump a:focus-visible {
  color: var(--cyan);
  padding-left: 10px;
}

.page-faq .faq-jump .mono {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--mist);
}

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  padding: var(--faq-pad-y) 0;
  border-top: 1px solid var(--line);
}

.page-faq .faq-group__head {
  max-width: 46em;
  margin-bottom: clamp(26px, 4vw, 48px);
}

.page-faq .faq-group__title {
  font-family: var(--font-display);
  font-weight: 200;
  font-size: clamp(34px, 6vw, 72px);
  line-height: 1;
  letter-spacing: -0.02em;
  margin: 12px 0 0;
  color: var(--paper);
}

.page-faq .faq-group__desc {
  margin: clamp(12px, 1.6vw, 20px) 0 0;
  max-width: 44ch;
  color: var(--mist);
  font-size: 17px;
  line-height: 1.75;
}

/* ---------- 折叠问答 ---------- */
.page-faq .faq-list {
  display: flex;
  flex-direction: column;
}

.page-faq .qa {
  border-top: var(--faq-rule);
  transition: background var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-faq .qa:last-child {
  border-bottom: var(--faq-rule);
}

.page-faq .qa[open] {
  background: rgba(79, 240, 224, 0.045);
  box-shadow: inset 4px 0 0 0 var(--cyan);
}

.page-faq .qa__q {
  display: flex;
  align-items: baseline;
  gap: clamp(10px, 1.6vw, 22px);
  padding: var(--faq-gutter-y) clamp(4px, 1.6vw, 22px);
  cursor: pointer;
  list-style: none;
}

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

.page-faq .qa__num {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--mist);
  transition: color var(--dur-fast) var(--ease);
}

.page-faq .qa[open] .qa__num {
  color: var(--cyan);
}

.page-faq .qa__text {
  font-size: clamp(16px, 1.5vw, 19px);
  font-weight: 500;
  line-height: 1.55;
  color: var(--paper);
  transition: color var(--dur-fast) var(--ease);
}

.page-faq .qa__q:hover .qa__text {
  color: var(--cyan);
}

.page-faq .qa__q::after {
  content: "+";
  margin-left: auto;
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--cyan);
  transform: translateY(1px);
}

.page-faq .qa[open] .qa__q::after {
  content: "\2212";
}

.page-faq .qa__a {
  padding: 0 clamp(4px, 1.6vw, 22px) clamp(20px, 2.4vw, 30px) clamp(40px, 5vw, 60px);
  color: var(--mist);
  font-size: 16px;
  line-height: 1.85;
}

.page-faq .qa__a p {
  margin: 0;
  max-width: 58ch;
}

.page-faq .qa__a a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--line-cyan);
  transition: border-color var(--dur-fast) var(--ease);
}

.page-faq .qa__a a:hover,
.page-faq .qa__a a:focus-visible {
  border-bottom-color: var(--cyan);
}

.page-faq .qa__a .tag-amber {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
}

/* ---------- 问题索引 ---------- */
.page-faq .faq-index {
  padding: var(--faq-pad-y) 0 clamp(72px, 10vw, 140px);
  border-top: 1px solid var(--line-cyan);
}

.page-faq .faq-index__head {
  max-width: 48em;
  margin-bottom: clamp(26px, 4vw, 46px);
}

.page-faq .faq-index__title {
  font-family: var(--font-display);
  font-weight: 200;
  font-size: clamp(30px, 4.6vw, 56px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin: 12px 0 0;
  color: var(--paper);
}

.page-faq .faq-index__desc {
  margin: clamp(12px, 1.6vw, 18px) 0 0;
  max-width: 44ch;
  color: var(--mist);
  font-size: 16px;
  line-height: 1.8;
}

.page-faq .faq-index__grid {
  display: grid;
  grid-template-columns: 1fr;
  column-gap: clamp(20px, 4vw, 52px);
  border-top: 1px solid var(--line-soft);
}

.page-faq .faq-index__item {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 11px 0;
  border-bottom: 1px solid var(--line-soft);
  color: var(--mist);
  text-decoration: none;
  font-size: 15px;
  line-height: 1.6;
  transition: color var(--dur-fast) var(--ease), transform var(--dur-fast) var(--ease);
}

.page-faq .faq-index__item:hover,
.page-faq .faq-index__item:focus-visible {
  color: var(--paper);
  transform: translateX(4px);
}

.page-faq .faq-index__num {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--amber);
}

.page-faq .faq-index__foot {
  margin: clamp(30px, 4vw, 48px) 0 0;
  max-width: 62ch;
  color: var(--mist);
  font-size: 15px;
  line-height: 1.85;
}

.page-faq .faq-index__foot a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--line-cyan);
}

.page-faq .faq-index__foot a:hover,
.page-faq .faq-index__foot a:focus-visible {
  border-bottom-color: var(--cyan);
}

/* ---------- 焦点反馈 ---------- */
.page-faq a:focus-visible,
.page-faq summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

/* ---------- 窄屏收口 ---------- */
@media (max-width: 559px) {
  .page-faq .qa__a {
    padding-left: clamp(4px, 1.6vw, 22px);
  }

  .page-faq .faq-index__item {
    font-size: 14px;
  }
}

/* ---------- 平板 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-jump {
    grid-template-columns: repeat(3, auto);
    justify-content: start;
    column-gap: clamp(20px, 3vw, 44px);
    row-gap: 0;
  }

  .page-faq .faq-jump a {
    border-bottom: 0;
    padding: 18px 0;
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 960px) {
  .page-faq .faq-jump {
    grid-template-columns: repeat(5, auto);
    column-gap: clamp(24px, 3.4vw, 56px);
  }

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

  .page-faq .faq-index__head {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    column-gap: clamp(32px, 5vw, 72px);
    align-items: end;
    max-width: none;
    margin-left: clamp(0px, 6vw, 96px);
  }

  .page-faq .faq-index__head .eyebrow {
    grid-column: 1 / -1;
  }

  .page-faq .faq-group__head {
    margin-left: clamp(0px, 5vw, 84px);
  }
}
<<<END>>>