.page-faq {
  --faq-cut: 20px;
  color: var(--text);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding-block: 28px 32px;
  background:
    radial-gradient(115% 90% at 88% 0%, rgba(27, 77, 99, 0.6), transparent 62%),
    linear-gradient(180deg, rgba(14, 31, 48, 0.92), rgba(8, 19, 31, 0) 78%);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: auto -12% 0;
  height: 110px;
  background: repeating-linear-gradient(-12deg, rgba(34, 240, 196, 0.09) 0 1px, transparent 1px 24px);
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 28px;
}

.page-faq .faq-hero__text .breadcrumb {
  margin-bottom: 18px;
}

.page-faq .faq-hero h1 {
  font-family: var(--font-display);
  font-size: 34px;
  line-height: 1.12;
  letter-spacing: -0.02em;
  font-weight: 800;
  margin: 10px 0 14px;
}

.page-faq .faq-hero .lede {
  font-size: 15px;
  line-height: 1.78;
  color: var(--muted);
  max-width: 48ch;
  margin: 0;
}

.page-faq .faq-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-hero__meta li {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.page-faq .faq-hero__meta .data-num {
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 700;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-hero__meta .unit {
  font-size: 12px;
  color: var(--muted);
  margin-left: 0.25em;
}

.page-faq .faq-hero__figure {
  margin: 0;
  position: relative;
}

.page-faq .faq-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  clip-path: polygon(0 0, calc(100% - 30px) 0, 100% 30px, 100% 100%, 0 100%);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.45);
}

/* ---------- 分组锚点条 ---------- */
.page-faq .faq-rail {
  position: sticky;
  top: var(--header-h);
  z-index: 6;
  background: rgba(8, 19, 31, 0.94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(10px);
}

.page-faq .faq-rail__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 10px 0;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-rail__list::-webkit-scrollbar {
  display: none;
}

.page-faq .faq-rail__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px 8px 14px;
  white-space: nowrap;
  text-decoration: none;
  font-size: 13px;
  color: var(--muted);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, 100% 0, calc(100% - 10px) 100%, 0 100%);
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background-color 0.2s var(--ease);
}

.page-faq .faq-rail__num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--accent-deep);
}

.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  color: var(--text);
  border-color: var(--accent-deep);
  background: rgba(34, 240, 196, 0.08);
}

.page-faq .faq-rail__link:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* ---------- 分组 ---------- */
.page-faq .faq-body {
  padding-block: 4px 0;
}

.page-faq .faq-group {
  padding-block: 44px;
  scroll-margin-top: calc(var(--header-h) + 64px);
}

.page-faq .faq-group__head {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 38px 14px 16px;
  background: linear-gradient(90deg, var(--ink-2), rgba(23, 54, 79, 0.16));
  border-left: 3px solid var(--accent);
  clip-path: polygon(0 0, 100% 0, calc(100% - 22px) 100%, 0 100%);
}

.page-faq .faq-group__num {
  font-family: var(--font-mono);
  font-size: 24px;
  font-weight: 700;
  line-height: 1;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-group__title {
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 800;
  letter-spacing: -0.01em;
  margin: 0;
  color: var(--text);
}

.page-faq .faq-group__count {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--faint);
}

.page-faq .faq-group__intro {
  margin: 16px 0 4px;
  font-size: 14px;
  line-height: 1.72;
  color: var(--muted);
  max-width: 58ch;
}

.page-faq .faq-inline-link {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid var(--accent-deep);
}

.page-faq .faq-inline-link:hover,
.page-faq .faq-inline-link:focus-visible {
  color: var(--text);
  border-bottom-color: var(--accent);
}

/* ---------- 问答展开组 ---------- */
.page-faq .accordion {
  margin-top: 12px;
  border-top: 1px solid var(--line);
}

.page-faq .accordion__item {
  border-bottom: 1px solid var(--line);
}

.page-faq .accordion__heading {
  margin: 0;
  font-size: inherit;
  font-weight: inherit;
}

.page-faq .accordion__trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  width: 100%;
  padding: 16px 2px;
  background: none;
  border: 0;
  text-align: left;
  cursor: pointer;
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 600;
  line-height: 1.55;
  color: var(--text);
  transition: color 0.2s var(--ease);
}

.page-faq .accordion__trigger:hover {
  color: var(--accent);
}

.page-faq .accordion__trigger:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: -2px;
}

.page-faq .accordion__icon {
  position: relative;
  flex: none;
  width: 24px;
  height: 24px;
  border: 1px solid var(--line);
  border-radius: 50%;
  color: var(--muted);
  transition: color 0.22s var(--ease), border-color 0.22s var(--ease), background-color 0.22s var(--ease);
}

.page-faq .accordion__icon::before,
.page-faq .accordion__icon::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 10px;
  height: 1.5px;
  background: currentColor;
  transform: translate(-50%, -50%);
  transition: transform 0.22s var(--ease), opacity 0.22s var(--ease);
}

.page-faq .accordion__icon::after {
  transform: translate(-50%, -50%) rotate(90deg);
}

.page-faq .accordion__item.is-open .accordion__icon::after {
  opacity: 0;
  transform: translate(-50%, -50%) rotate(0deg);
}

.page-faq .accordion__item.is-open .accordion__icon {
  color: var(--accent);
  border-color: var(--accent);
  background: rgba(34, 240, 196, 0.1);
}

.page-faq .accordion__item.is-open .accordion__trigger {
  color: var(--accent);
}

.page-faq .accordion__panel[hidden] {
  display: none;
}

.page-faq .accordion__body {
  padding: 0 2px 20px;
}

.page-faq .accordion__body p {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--muted);
  max-width: 62ch;
}

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

/* ---------- 步骤列表 ---------- */
.page-faq .faq-steps {
  list-style: none;
  counter-reset: faq-step;
  margin: 14px 0 0;
  padding: 0;
  max-width: 62ch;
}

.page-faq .faq-steps li {
  position: relative;
  counter-increment: faq-step;
  padding-left: 38px;
  padding-bottom: 14px;
  font-size: 14px;
  line-height: 1.72;
  color: var(--muted);
}

.page-faq .faq-steps li::before {
  content: counter(faq-step);
  position: absolute;
  left: 0;
  top: 1px;
  width: 22px;
  height: 22px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  border: 1px solid var(--accent-deep);
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 11px;
  background: var(--ink);
}

.page-faq .faq-steps li:not(:last-child)::after {
  content: "";
  position: absolute;
  left: 11px;
  top: 27px;
  bottom: 2px;
  width: 1px;
  background: linear-gradient(180deg, var(--line), transparent);
}

/* ---------- 设备示意 ---------- */
.page-faq .faq-device-figure {
  margin: 26px 0 0;
}

.page-faq .faq-device-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 2 / 1;
  object-fit: cover;
  clip-path: polygon(0 0, calc(100% - 22px) 0, 100% 22px, 100% 100%, 0 100%);
}

.page-faq .faq-device-figure figcaption {
  margin-top: 10px;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--faint);
  font-family: var(--font-mono);
}

/* ---------- 收尾 ---------- */
.page-faq .faq-help {
  border-top: 1px solid var(--line);
  background:
    radial-gradient(90% 120% at 10% 0%, rgba(27, 77, 99, 0.45), transparent 65%),
    linear-gradient(180deg, rgba(14, 31, 48, 0.7), rgba(8, 19, 31, 0.2));
}

.page-faq .faq-help__inner {
  display: grid;
  gap: 22px;
  padding-block: 44px 56px;
}

.page-faq .faq-help__title {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 800;
  letter-spacing: -0.01em;
  margin: 0 0 10px;
  color: var(--text);
}

.page-faq .faq-help__text p {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--muted);
  max-width: 56ch;
}

.page-faq .faq-help__contact {
  margin-top: 10px !important;
  font-family: var(--font-mono);
  font-size: 13px !important;
  letter-spacing: 0.02em;
  color: var(--accent) !important;
}

.page-faq .faq-help__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ---------- 断点 ---------- */
@media (min-width: 700px) {
  .page-faq .faq-hero {
    padding-block: 40px 48px;
  }

  .page-faq .faq-hero h1 {
    font-size: 52px;
  }

  .page-faq .faq-hero .lede {
    font-size: 16px;
  }

  .page-faq .faq-group__head {
    padding: 16px 48px 16px 22px;
    gap: 16px;
  }

  .page-faq .faq-group__num {
    font-size: 32px;
  }

  .page-faq .faq-group__title {
    font-size: 24px;
  }

  .page-faq .accordion__trigger {
    font-size: 16px;
    padding: 18px 4px;
  }

  .page-faq .accordion__body {
    padding-bottom: 24px;
  }

  .page-faq .accordion__body p,
  .page-faq .faq-steps li {
    font-size: 15px;
  }

  .page-faq .faq-help__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 32px;
    padding-block: 52px 64px;
  }

  .page-faq .faq-help__title {
    font-size: 30px;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    align-items: center;
    gap: 56px;
  }

  .page-faq .faq-hero__figure img {
    clip-path: polygon(0 0, calc(100% - 44px) 0, 100% 44px, 100% 100%, 0 100%);
  }

  .page-faq .faq-group {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
  }

  .page-faq .accordion__trigger {
    padding-inline: 8px;
  }

  .page-faq .accordion__body {
    padding-inline: 8px;
  }

  .page-faq .faq-rail__list {
    padding: 12px 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .accordion__icon,
  .page-faq .accordion__icon::before,
  .page-faq .accordion__icon::after,
  .page-faq .accordion__trigger,
  .page-faq .faq-rail__link {
    transition: none;
  }
}
<<<END>>>