.page-faq {
  --faq-hero-r: 18px;
  --faq-rail-w: 244px;
  background: var(--page-bg);
}

/* ---------- 面包屑在深色首屏上的适配 ---------- */
.page-faq .breadcrumb {
  margin-bottom: clamp(20px, 3.5vw, 34px);
}
.page-faq .breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 12px;
  letter-spacing: .02em;
}
.page-faq .breadcrumb li {
  color: var(--on-dark-faint);
}
.page-faq .breadcrumb li + li::before {
  content: "/";
  margin-right: 8px;
  color: rgba(255, 255, 255, .28);
}
.page-faq .breadcrumb a {
  color: var(--on-dark-soft);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}
.page-faq .breadcrumb a:hover,
.page-faq .breadcrumb a:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--line-cyan);
}
.page-faq .breadcrumb [aria-current="page"] {
  color: var(--cyan);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(26px, 5vw, 46px) 0 clamp(38px, 6vw, 72px);
  color: var(--on-dark);
  background:
    radial-gradient(115% 130% at 8% -18%, rgba(0, 229, 255, .2), transparent 58%),
    radial-gradient(90% 110% at 96% 6%, rgba(255, 46, 147, .14), transparent 62%),
    linear-gradient(158deg, var(--navy-deep) 0%, var(--navy) 52%, var(--navy-2) 100%);
  border-bottom: 1px solid var(--line-dark);
}
.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, .045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .045) 1px, transparent 1px);
  background-size: 68px 68px;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, .9), transparent 78%);
  -webkit-mask-image: linear-gradient(to bottom, rgba(0, 0, 0, .9), transparent 78%);
}
.page-faq .faq-hero .shell {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(28px, 5vw, 48px);
  align-items: center;
}

.page-faq .faq-hero__kicker {
  color: var(--cyan);
  margin: 0;
}

.page-faq .faq-hero h1 {
  margin: 14px 0 0;
  font-size: clamp(28px, 4.6vw, 48px);
  line-height: 1.14;
  letter-spacing: -.022em;
  color: var(--white);
}

.page-faq .faq-hero__lead {
  margin: 18px 0 0;
  max-width: 48ch;
  font-size: clamp(15px, 1.4vw, 17px);
  line-height: 1.78;
  color: var(--on-dark-soft);
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-faq .faq-hero__stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(118px, 1fr));
  gap: 14px 12px;
  margin: 30px 0 0;
  padding: 18px 0 0;
  border-top: 1px solid var(--line-dark);
  list-style: none;
}
.page-faq .faq-hero__stats li {
  display: flex;
  flex-direction: column;
  gap: 5px;
}
.page-faq .faq-hero__stats strong {
  font-size: 17px;
  font-weight: 700;
  color: var(--cyan);
  letter-spacing: .01em;
}
.page-faq .faq-hero__stats span {
  font-size: 12px;
  line-height: 1.5;
  color: var(--on-dark-faint);
}

.page-faq .faq-hero__figure {
  aspect-ratio: 5 / 3;
  width: 100%;
  margin: 0;
}
.page-faq .faq-hero__figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* ---------- 分类索引区 ---------- */
.page-faq .faq-nav {
  padding: clamp(36px, 6vw, 68px) 0;
  background: linear-gradient(180deg, #FFFFFF 0%, var(--mist) 100%);
  border-bottom: 1px solid var(--line);
}
.page-faq .faq-nav__grid {
  display: grid;
  gap: clamp(26px, 4vw, 46px);
  align-items: start;
}
.page-faq .faq-nav__figure {
  aspect-ratio: 4 / 3;
  width: 100%;
  max-width: 460px;
  margin: 0;
}
.page-faq .faq-nav__figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.page-faq .faq-nav__title {
  margin: 0;
  font-size: clamp(22px, 2.8vw, 30px);
  line-height: 1.3;
  letter-spacing: -.015em;
  color: var(--ink-strong);
}
.page-faq .faq-nav__lead {
  margin: 12px 0 0;
  max-width: 54ch;
  font-size: 15px;
  line-height: 1.72;
  color: var(--ink-soft);
}

.page-faq .faq-cards {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}
.page-faq .faq-cards a {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  grid-template-rows: auto auto;
  align-items: center;
  gap: 2px 14px;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--panel-bg);
  text-decoration: none;
  color: inherit;
  transition: border-color .2s ease, box-shadow .2s ease, transform .2s ease;
}
.page-faq .faq-cards a:hover,
.page-faq .faq-cards a:focus-visible {
  border-color: var(--line-cyan);
  box-shadow: var(--shadow-card);
  transform: translateX(3px);
}
.page-faq .faq-cards__num {
  grid-row: span 2;
  align-self: stretch;
  display: grid;
  place-items: center;
  min-width: 38px;
  padding: 0 6px;
  border-radius: 10px;
  background: var(--navy);
  color: var(--cyan);
  font-size: 13px;
  font-weight: 700;
}
.page-faq .faq-cards strong {
  font-size: 16px;
  color: var(--ink-strong);
  letter-spacing: -.005em;
}
.page-faq .faq-cards em {
  font-style: normal;
  font-size: 13px;
  line-height: 1.55;
  color: var(--ink-soft);
}

/* ---------- 问答主体 ---------- */
.page-faq .faq-main {
  background: var(--page-bg);
}
.page-faq .faq-layout {
  display: block;
}

.page-faq .faq-rail {
  margin-bottom: 30px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: var(--panel-bg);
  box-shadow: var(--shadow-card);
}
.page-faq .faq-rail__title {
  margin: 0;
  font-size: 12px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--gold);
}
.page-faq .faq-rail__list {
  list-style: none;
  display: flex;
  gap: 8px;
  margin: 12px 0 0;
  padding: 0 0 6px;
  overflow-x: auto;
  scrollbar-width: none;
}
.page-faq .faq-rail__list::-webkit-scrollbar {
  display: none;
}
.page-faq .faq-rail__list a {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  white-space: nowrap;
  padding: 7px 13px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 13px;
  color: var(--ink-soft);
  text-decoration: none;
  transition: color .18s ease, border-color .18s ease, background .18s ease;
}
.page-faq .faq-rail__list a .mono {
  font-size: 11px;
  color: var(--gold);
}
.page-faq .faq-rail__list a:hover,
.page-faq .faq-rail__list a:focus-visible {
  color: var(--ink-strong);
  border-color: var(--line-cyan);
  background: rgba(0, 229, 255, .07);
}
.page-faq .faq-rail__note {
  display: none;
  margin: 18px 0 0;
  padding-top: 16px;
  border-top: 1px dashed var(--line-strong);
  font-size: 13px;
  line-height: 1.68;
  color: var(--ink-soft);
}
.page-faq .faq-rail__note a {
  color: var(--cyan-deep);
  font-weight: 600;
  text-decoration: none;
  border-bottom: 1px solid var(--line-cyan);
}

.page-faq .faq-cat {
  scroll-margin-top: calc(var(--header-h) + 24px);
}
.page-faq .faq-cat + .faq-cat {
  margin-top: clamp(38px, 5.5vw, 62px);
}

.page-faq .faq-cat__head {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding-bottom: 16px;
  margin-bottom: 12px;
  border-bottom: 1px solid var(--line-strong);
}
.page-faq .faq-cat__num {
  flex: none;
  display: grid;
  place-items: center;
  min-width: 42px;
  height: 42px;
  border-radius: 11px;
  background: var(--navy);
  color: var(--cyan);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .04em;
}
.page-faq .faq-cat:nth-child(3n + 2) .faq-cat__num {
  background: var(--navy-2);
  color: var(--gold);
}
.page-faq .faq-cat__title {
  margin: 0;
  font-size: clamp(19px, 2.3vw, 23px);
  line-height: 1.3;
  letter-spacing: -.012em;
  color: var(--ink-strong);
}
.page-faq .faq-cat__lead {
  margin: 7px 0 0;
  max-width: 62ch;
  font-size: 14px;
  line-height: 1.72;
  color: var(--ink-soft);
}

.page-faq .faq-list {
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: var(--panel-bg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}
.page-faq .faq-item + .faq-item {
  border-top: 1px solid var(--line);
}
.page-faq .faq-item {
  transition: background .2s ease;
}
.page-faq .faq-item[open] {
  background: rgba(0, 229, 255, .045);
}

.page-faq .faq-item > summary {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--ink-strong);
}
.page-faq .faq-item > summary::-webkit-details-marker {
  display: none;
}
.page-faq .faq-item > summary::marker {
  content: "";
}
.page-faq .faq-item > summary:hover,
.page-faq .faq-item > summary:focus-visible {
  color: var(--cyan-deep);
}
.page-faq .faq-item__q {
  min-width: 0;
}

.page-faq .faq-item__sign {
  position: relative;
  flex: none;
  width: 22px;
  height: 22px;
  margin-top: 1px;
  border: 1px solid var(--line-cyan);
  border-radius: 7px;
  background: rgba(0, 229, 255, .1);
}
.page-faq .faq-item__sign::before,
.page-faq .faq-item__sign::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  translate: -50% -50%;
  background: var(--cyan-deep);
  border-radius: 1px;
}
.page-faq .faq-item__sign::before {
  width: 9px;
  height: 1.5px;
}
.page-faq .faq-item__sign::after {
  width: 1.5px;
  height: 9px;
  transition: opacity .2s ease;
}
.page-faq .faq-item[open] .faq-item__sign {
  background: var(--cyan);
  border-color: var(--cyan);
}
.page-faq .faq-item[open] .faq-item__sign::before,
.page-faq .faq-item[open] .faq-item__sign::after {
  background: var(--navy);
}
.page-faq .faq-item[open] .faq-item__sign::after {
  opacity: 0;
}

.page-faq .faq-item__body {
  padding: 0 18px 18px;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--ink-soft);
}
.page-faq .faq-item__body p {
  margin: 0 0 10px;
}
.page-faq .faq-item__body p:last-child {
  margin-bottom: 0;
}
.page-faq .faq-item__body ol,
.page-faq .faq-item__body ul {
  margin: 0 0 10px;
  padding-left: 0;
  list-style: none;
  counter-reset: faqstep;
}
.page-faq .faq-item__body ol li {
  position: relative;
  counter-increment: faqstep;
  padding-left: 30px;
  margin-bottom: 7px;
}
.page-faq .faq-item__body ol li::before {
  content: counter(faqstep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 2px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  color: var(--gold);
  background: rgba(255, 184, 0, .13);
  border-radius: 5px;
  padding: 1px 5px;
}
.page-faq .faq-item__body ul li {
  position: relative;
  padding-left: 20px;
  margin-bottom: 7px;
}
.page-faq .faq-item__body ul li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 10px;
  width: 6px;
  height: 6px;
  border-radius: 2px;
  background: var(--cyan);
}
.page-faq .faq-item__body a {
  color: var(--cyan-deep);
  font-weight: 600;
  text-decoration: none;
  border-bottom: 1px solid var(--line-cyan);
}
.page-faq .faq-item__body a:hover,
.page-faq .faq-item__body a:focus-visible {
  color: var(--navy);
  border-bottom-color: var(--navy);
}

/* ---------- 底部协助区 ---------- */
.page-faq .faq-cta {
  background:
    radial-gradient(100% 120% at 88% 0%, rgba(0, 229, 255, .16), transparent 60%),
    linear-gradient(150deg, var(--navy-2), var(--navy-deep));
  border-top: 1px solid var(--line-dark);
}
.page-faq .faq-cta__inner {
  display: grid;
  gap: 26px;
  align-items: center;
}
.page-faq .faq-cta__kicker {
  margin: 0;
  color: var(--gold);
}
.page-faq .faq-cta__copy h2 {
  margin: 12px 0 0;
  font-size: clamp(22px, 3vw, 32px);
  line-height: 1.24;
  letter-spacing: -.018em;
  color: var(--white);
}
.page-faq .faq-cta__copy p {
  margin: 12px 0 0;
  max-width: 56ch;
  font-size: 15px;
  line-height: 1.74;
  color: var(--on-dark-soft);
}
.page-faq .faq-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-faq .faq-nav__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr);
  }
  .page-faq .faq-cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-faq .faq-item > summary {
    padding: 18px 22px;
    font-size: 15.5px;
  }
  .page-faq .faq-item__body {
    padding: 0 22px 20px;
  }
  .page-faq .faq-cta__inner {
    grid-template-columns: minmax(0, 1fr) auto;
  }
}

@media (min-width: 940px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, .98fr);
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-layout {
    display: grid;
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
    gap: clamp(34px, 4vw, 60px);
    align-items: start;
  }
  .page-faq .faq-rail {
    position: sticky;
    top: calc(var(--header-h) + 22px);
    margin-bottom: 0;
    padding: 18px 16px;
  }
  .page-faq .faq-rail__list {
    flex-direction: column;
    gap: 2px;
    overflow: visible;
    padding-bottom: 0;
  }
  .page-faq .faq-rail__list li {
    width: 100%;
  }
  .page-faq .faq-rail__list a {
    width: 100%;
    border: 0;
    border-radius: 9px;
    padding: 9px 10px;
    font-size: 14px;
  }
  .page-faq .faq-rail__list a:hover,
  .page-faq .faq-rail__list a:focus-visible {
    background: var(--mist);
  }
  .page-faq .faq-rail__note {
    display: block;
  }
  .page-faq .faq-cards {
    grid-template-columns: minmax(0, 1fr);
  }
}
<<<END>>>