.page-faq {
  background: var(--paper);
  color: var(--charcoal);
  font-family: var(--font-sans);
  overflow-x: clip;
}

.page-faq .faq-hero,
.page-faq .faq-index,
.page-faq .faq-topic,
.page-faq .faq-contact {
  scroll-margin-top: 132px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  background: var(--ink-800);
  color: var(--paper);
  padding: clamp(20px, 3.4vw, 44px) 0 clamp(40px, 6vw, 76px);
  border-radius: 0 0 var(--r-card) var(--r-card);
  isolation: isolate;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background-image:
    linear-gradient(var(--line-dark-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--line-dark-soft) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, .9), transparent 88%);
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, .9), transparent 88%);
  pointer-events: none;
  z-index: 0;
}

.page-faq .faq-hero > .container {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero__crumbs {
  margin: 0 0 clamp(20px, 3vw, 34px);
}

.page-faq .faq-hero__crumbs .breadcrumbs-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
}

.page-faq .faq-hero__crumbs .breadcrumbs-list li + li::before {
  content: "／";
  color: var(--line-dark);
  margin-right: 10px;
}

.page-faq .faq-hero__crumbs .breadcrumbs-item a {
  color: var(--haze);
  text-decoration: none;
  transition: color var(--dur) var(--ease);
}

.page-faq .faq-hero__crumbs .breadcrumbs-item a:hover,
.page-faq .faq-hero__crumbs .breadcrumbs-item a:focus-visible {
  color: var(--cyan);
}

.page-faq .faq-hero__crumbs .breadcrumbs-current {
  color: var(--orange);
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 52px);
  align-items: center;
}

.page-faq .faq-hero__copy .eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--cyan);
  margin: 0;
}

.page-faq .faq-hero__copy h1 {
  margin: 14px 0 0;
  max-width: 20ch;
  font-size: clamp(28px, 4.2vw, 58px);
  font-weight: 200;
  line-height: 1.14;
  letter-spacing: -.035em;
  color: var(--paper);
}

.page-faq .faq-hero__copy .lede {
  margin: 20px 0 0;
  max-width: 44ch;
  font-size: clamp(14px, 1.5vw, 17px);
  line-height: 1.78;
  color: var(--haze);
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.page-faq .faq-hero__actions .btn--ghost {
  color: var(--paper);
  border-color: var(--line-dark);
}

.page-faq .faq-hero__actions .btn--ghost:hover,
.page-faq .faq-hero__actions .btn--ghost:focus-visible {
  border-color: var(--cyan);
  color: var(--cyan);
}

.page-faq .faq-hero__figure {
  margin: 0;
  width: 100%;
  aspect-ratio: 12 / 7;
  border-radius: var(--r-card);
  overflow: hidden;
  border: 1px solid var(--line-dark);
  background: var(--ink-700);
}

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

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, .88fr);
  }
  .page-faq .faq-hero__figure {
    aspect-ratio: 4 / 5;
  }
}

/* ---------- 主题索引 ---------- */
.page-faq .faq-index {
  padding: clamp(40px, 6vw, 84px) 0 clamp(8px, 1.5vw, 16px);
}

.page-faq .faq-index__head {
  max-width: 780px;
}

.page-faq .faq-index__head .section-head__index {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--orange);
}

.page-faq .faq-index__head .section-head__title {
  margin: 10px 0 0;
  font-size: clamp(24px, 3.2vw, 40px);
  font-weight: 200;
  line-height: 1.2;
  letter-spacing: -.02em;
  color: var(--charcoal);
}

.page-faq .faq-index__lede {
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.78;
  color: rgba(24, 27, 34, .72);
  max-width: 52ch;
}

.page-faq .faq-index__list {
  list-style: none;
  margin: clamp(24px, 3.4vw, 44px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(168px, 1fr));
  gap: 12px;
}

.page-faq .faq-tab {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 6px;
  height: 100%;
  padding: 26px 18px 16px;
  background: var(--paper-soft);
  border: 1px solid var(--line-light);
  border-radius: var(--r-md);
  color: var(--charcoal);
  text-decoration: none;
  transition: border-color var(--dur) var(--ease),
              background-color var(--dur) var(--ease),
              transform var(--dur) var(--ease);
}

.page-faq .faq-tab::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 18px;
  width: 46px;
  height: 7px;
  border-radius: 0 0 4px 4px;
  background: var(--gold);
  transition: background-color var(--dur) var(--ease);
}

.page-faq .faq-tab:hover,
.page-faq .faq-tab:focus-visible {
  border-color: var(--orange);
  background: var(--paper);
  transform: translateY(-2px);
  outline: none;
}

.page-faq .faq-tab:hover::before,
.page-faq .faq-tab:focus-visible::before {
  background: var(--orange);
}

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

.page-faq .faq-tab__name {
  font-size: 16px;
  font-weight: 500;
  line-height: 1.4;
}

.page-faq .faq-tab__count {
  margin-top: auto;
  padding-top: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: rgba(24, 27, 34, .5);
}

/* ---------- 主题章节 ---------- */
.page-faq .faq-topic {
  padding: clamp(32px, 4.6vw, 60px) 0;
  border-top: 1px solid var(--line-light);
}

.page-faq .faq-topic:first-of-type {
  border-top: none;
}

.page-faq .faq-topic__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3.4vw, 48px);
}

.page-faq .faq-topic__folder {
  display: inline-flex;
  align-items: center;
  padding: 5px 14px;
  border-radius: var(--r-pill);
  background: var(--gold);
  color: var(--ink-900);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
}

.page-faq .faq-topic__no {
  display: block;
  margin: 12px 0 6px;
  font-family: var(--font-mono);
  font-size: clamp(44px, 5.4vw, 68px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.05em;
  color: var(--charcoal);
  opacity: .16;
}

.page-faq .faq-topic__side h2 {
  margin: 0 0 12px;
  font-size: clamp(22px, 2.4vw, 32px);
  font-weight: 300;
  line-height: 1.26;
  letter-spacing: -.02em;
  color: var(--charcoal);
}

.page-faq .faq-topic__desc {
  margin: 0 0 16px;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(24, 27, 34, .72);
}

.page-faq .faq-topic__link {
  display: inline-block;
  padding-bottom: 3px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--charcoal);
  text-decoration: none;
  border-bottom: 1px solid var(--line-light);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .faq-topic__link:hover,
.page-faq .faq-topic__link:focus-visible {
  color: var(--orange);
  border-color: var(--orange);
  outline: none;
}

.page-faq .faq-topic__figure {
  margin: 22px 0 0;
  max-width: 320px;
  aspect-ratio: 3 / 4;
  border-radius: var(--r-md);
  overflow: hidden;
  border: 1px solid var(--line-light);
  background: var(--paper-soft);
}

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

@media (min-width: 900px) {
  .page-faq .faq-topic__grid {
    grid-template-columns: minmax(0, 300px) minmax(0, 1fr);
    align-items: start;
  }
  .page-faq .faq-topic__side {
    position: sticky;
    top: 128px;
  }
}

/* ---------- 手风琴 ---------- */
.page-faq .faq-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-width: 0;
}

.page-faq .faq-item {
  background: var(--paper-soft);
  border: 1px solid var(--line-light);
  border-radius: var(--r-md);
  transition: border-color var(--dur) var(--ease),
              background-color var(--dur) var(--ease);
}

.page-faq .faq-item:hover {
  border-color: rgba(24, 27, 34, .32);
}

.page-faq .faq-item[open] {
  border-color: var(--orange);
  background: var(--paper);
}

.page-faq .faq-item__summary {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 18px 20px 16px;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-item__summary::marker {
  content: "";
}

.page-faq .faq-item__summary:focus-visible {
  outline: 2px solid var(--ink-800);
  outline-offset: 3px;
  border-radius: var(--r-md);
}

.page-faq .faq-item__no {
  flex: none;
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--haze);
}

.page-faq .faq-item__q {
  flex: 1 1 auto;
  min-width: 0;
  font-size: clamp(15px, 1.5vw, 17px);
  font-weight: 500;
  line-height: 1.55;
  color: var(--charcoal);
  transition: color var(--dur) var(--ease);
}

.page-faq .faq-item[open] .faq-item__q {
  color: var(--charcoal);
}

.page-faq .faq-item__icon {
  position: relative;
  flex: none;
  width: 22px;
  height: 22px;
  margin-top: 2px;
  border: 1px solid var(--line-light);
  border-radius: var(--r-pill);
  transition: background-color var(--dur) var(--ease),
              border-color var(--dur) var(--ease);
}

.page-faq .faq-item__icon::before,
.page-faq .faq-item__icon::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  background: var(--charcoal);
  transform: translate(-50%, -50%);
  transition: background-color var(--dur) var(--ease),
              transform var(--dur) var(--ease),
              opacity var(--dur) var(--ease);
}

.page-faq .faq-item__icon::before {
  width: 10px;
  height: 1.5px;
}

.page-faq .faq-item__icon::after {
  width: 1.5px;
  height: 10px;
}

.page-faq .faq-item[open] .faq-item__icon {
  background: var(--orange);
  border-color: var(--orange);
}

.page-faq .faq-item[open] .faq-item__icon::before,
.page-faq .faq-item[open] .faq-item__icon::after {
  background: var(--ink-900);
}

.page-faq .faq-item[open] .faq-item__icon::after {
  transform: translate(-50%, -50%) rotate(90deg);
  opacity: 0;
}

.page-faq .faq-item__body {
  margin: 0 20px;
  padding: 14px 0 18px;
  border-top: 1px dashed var(--line-light);
  font-size: 15px;
  line-height: 1.82;
  color: rgba(24, 27, 34, .78);
}

.page-faq .faq-item__body p {
  margin: 0;
  max-width: 68ch;
}

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

.page-faq .faq-item__body a {
  color: var(--charcoal);
  text-decoration: underline;
  text-decoration-color: var(--orange);
  text-decoration-thickness: 1.5px;
  text-underline-offset: 3px;
  transition: color var(--dur) var(--ease);
}

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

/* ---------- 联系客服 ---------- */
.page-faq .faq-contact {
  position: relative;
  margin-top: clamp(36px, 5vw, 68px);
  padding: clamp(40px, 6vw, 80px) 0 clamp(44px, 6vw, 84px);
  background: var(--ink-900);
  color: var(--paper);
  border-radius: var(--r-card) var(--r-card) 0 0;
  isolation: isolate;
}

.page-faq .faq-contact::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(160deg, rgba(57, 230, 224, .1), transparent 58%);
  pointer-events: none;
  z-index: 0;
}

.page-faq .faq-contact__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4.4vw, 60px);
  align-items: start;
}

.page-faq .faq-contact__copy .eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--cyan);
}

.page-faq .faq-contact__copy h2 {
  margin: 14px 0 0;
  font-size: clamp(26px, 3.4vw, 44px);
  font-weight: 200;
  line-height: 1.2;
  letter-spacing: -.02em;
  color: var(--paper);
  max-width: 18ch;
}

.page-faq .faq-contact__lede {
  margin: 18px 0 0;
  max-width: 46ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--haze);
}

.page-faq .faq-contact__tips {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.page-faq .faq-contact__tips li {
  position: relative;
  padding-left: 20px;
  font-size: 14px;
  line-height: 1.72;
  color: var(--haze);
}

.page-faq .faq-contact__tips li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .72em;
  width: 10px;
  height: 2px;
  background: var(--orange);
}

.page-faq .faq-contact__panel {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--line-dark);
}

.page-faq .faq-contact__row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 16px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line-dark);
}

.page-faq .faq-contact__key {
  flex: none;
  min-width: 84px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--haze);
}

.page-faq .faq-contact__value {
  font-family: var(--font-mono);
  font-size: clamp(15px, 1.6vw, 18px);
  font-weight: 600;
  letter-spacing: -.01em;
  color: var(--paper);
  word-break: break-all;
}

.page-faq .copy-btn {
  margin-left: auto;
  padding: 6px 14px;
  border: 1px solid rgba(57, 230, 224, .55);
  border-radius: var(--r-pill);
  background: transparent;
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  cursor: pointer;
  transition: background-color var(--dur) var(--ease),
              color var(--dur) var(--ease),
              border-color var(--dur) var(--ease);
}

.page-faq .copy-btn:hover,
.page-faq .copy-btn:focus-visible {
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--ink-900);
  outline: none;
}

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

.page-faq .faq-contact__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.page-faq .faq-contact__btn {
  display: inline-flex;
  align-items: center;
  padding: 11px 22px;
  border-radius: var(--r-pill);
  background: var(--orange);
  color: var(--ink-900);
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  transition: background-color var(--dur) var(--ease),
              color var(--dur) var(--ease),
              border-color var(--dur) var(--ease);
}

.page-faq .faq-contact__btn:hover,
.page-faq .faq-contact__btn:focus-visible {
  background: var(--cyan);
  color: var(--ink-900);
  outline: none;
}

.page-faq .faq-contact__btn--ghost {
  background: transparent;
  color: var(--paper);
  border: 1px solid var(--line-dark);
}

.page-faq .faq-contact__btn--ghost:hover,
.page-faq .faq-contact__btn--ghost:focus-visible {
  background: transparent;
  color: var(--cyan);
  border-color: var(--cyan);
}

@media (min-width: 900px) {
  .page-faq .faq-contact__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, .92fr);
  }
}

@media (max-width: 639px) {
  .page-faq .faq-item__summary {
    padding: 16px 16px 14px;
    gap: 10px;
  }
  .page-faq .faq-item__body {
    margin: 0 16px;
    padding: 12px 0 16px;
    font-size: 14px;
  }
  .page-faq .faq-contact__row {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }
  .page-faq .copy-btn {
    margin-left: 0;
  }
  .page-faq .faq-contact__key {
    min-width: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-tab,
  .page-faq .faq-item,
  .page-faq .faq-item__icon,
  .page-faq .faq-item__icon::before,
  .page-faq .faq-item__icon::after,
  .page-faq .copy-btn,
  .page-faq .faq-contact__btn {
    transition: none;
  }
  .page-faq .faq-tab:hover,
  .page-faq .faq-tab:focus-visible {
    transform: none;
  }
}
<<<END>>>