.page-faq {
  --faq-nav-w: 268px;
  --faq-gap: clamp(20px, 3vw, 44px);
  background:
    radial-gradient(1100px 560px at 82% -8%, rgba(45, 212, 191, 0.10), transparent 62%),
    radial-gradient(880px 520px at 4% 6%, rgba(76, 141, 255, 0.10), transparent 64%),
    var(--c-night);
  color: var(--c-snow);
  font-family: var(--font-body);
  overflow-x: hidden;
}

.page-faq a:focus-visible,
.page-faq summary:focus-visible {
  outline: 2px solid var(--c-teal);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ── 首屏框景 ── */
.page-faq .faq-hero {
  position: relative;
  isolation: isolate;
  border-bottom: 1px solid var(--line-soft);
  overflow: hidden;
}

.page-faq .faq-hero__media {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.page-faq .faq-hero__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.26;
  filter: saturate(0.95);
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: var(--shell-max);
  margin: 0 auto;
  padding: clamp(20px, 4vw, 44px) var(--gutter) clamp(24px, 4vw, 48px);
}

.page-faq .faq-hero__frame {
  position: relative;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-l);
  background: linear-gradient(158deg, rgba(16, 26, 60, 0.88), rgba(7, 13, 31, 0.74));
  padding: clamp(18px, 3.6vw, 40px);
}

.page-faq .faq-hero__frame::before,
.page-faq .faq-hero__frame::after {
  content: "";
  position: absolute;
  width: 20px;
  height: 20px;
  pointer-events: none;
}

.page-faq .faq-hero__frame::before {
  top: -1px;
  left: -1px;
  border-top: 2px solid var(--c-teal);
  border-left: 2px solid var(--c-teal);
  border-top-left-radius: var(--radius-l);
}

.page-faq .faq-hero__frame::after {
  right: -1px;
  bottom: -1px;
  border-right: 2px solid var(--c-ember);
  border-bottom: 2px solid var(--c-ember);
  border-bottom-right-radius: var(--radius-l);
}

.page-faq .faq-hero__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 12px;
  border-bottom: 1px dashed var(--line-faint);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--c-dust);
}

.page-faq .faq-hero .breadcrumb {
  margin: 14px 0 0;
}

.page-faq .faq-hero .kicker {
  margin: 16px 0 10px;
  color: var(--c-dust);
}

.page-faq .faq-hero h1 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(28px, 5.2vw, 58px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.012em;
}

.page-faq .faq-h1-accent {
  color: var(--c-teal);
}

.page-faq .faq-hero__lead {
  margin: 16px 0 0;
  max-width: 62ch;
  font-size: clamp(14.5px, 1.6vw, 17px);
  line-height: 1.85;
  color: var(--c-dust);
}

/* ── 首屏数据带 ── */
.page-faq .faq-band {
  margin-top: 14px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line-faint);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-m);
  overflow: hidden;
}

.page-faq .faq-band .data-band__item {
  background: rgba(7, 13, 31, 0.78);
  padding: 13px 15px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.page-faq .faq-band .data-band__value {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(19px, 3vw, 27px);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.01em;
}

.page-faq .faq-band .data-band__label {
  font-size: 12.5px;
  letter-spacing: 0.02em;
  color: var(--c-dust);
}

/* ── 主体骨架 ── */
.page-faq .faq-shell {
  width: 100%;
  max-width: var(--shell-max);
  margin: 0 auto;
  padding: clamp(22px, 4vw, 48px) var(--gutter) clamp(48px, 7vw, 88px);
}

.page-faq .faq-nav {
  padding: 16px;
  margin-bottom: 26px;
  border: 1px solid var(--line-faint);
  border-radius: var(--radius-m);
  background: linear-gradient(180deg, rgba(16, 26, 60, 0.82), rgba(7, 13, 31, 0.52));
}

.page-faq .faq-nav__title {
  margin: 0 0 12px;
  font-family: var(--font-serif);
  font-size: 14px;
  letter-spacing: 0.04em;
  color: var(--c-snow);
}

.page-faq .faq-nav__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-faq .faq-nav__link {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 11px;
  border: 1px solid var(--line-faint);
  border-radius: 999px;
  color: var(--c-dust);
  text-decoration: none;
  font-size: 13.5px;
  line-height: 1.3;
  transition: color 160ms var(--ease), border-color 160ms var(--ease), background-color 160ms var(--ease);
}

.page-faq .faq-nav__link:hover {
  color: var(--c-snow);
  border-color: var(--line-strong);
  background: rgba(45, 212, 191, 0.07);
}

.page-faq .faq-nav__link[aria-current="true"] {
  color: var(--c-night);
  background: var(--c-teal);
  border-color: var(--c-teal);
}

.page-faq .faq-nav__no {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.08em;
  opacity: 0.8;
}

.page-faq .faq-nav__note {
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px dashed var(--line-faint);
  font-family: var(--font-serif);
  font-size: 12.5px;
  line-height: 1.75;
  color: var(--c-mist);
}

/* ── 分组 ── */
.page-faq .faq-group {
  --accent: var(--c-teal);
  position: relative;
  scroll-margin-top: 96px;
}

.page-faq .faq-group:nth-of-type(1) { --accent: var(--c-teal); }
.page-faq .faq-group:nth-of-type(2) { --accent: var(--c-flag-blue); }
.page-faq .faq-group:nth-of-type(3) { --accent: var(--c-ember); }
.page-faq .faq-group:nth-of-type(4) { --accent: var(--c-flag-green); }
.page-faq .faq-group:nth-of-type(5) { --accent: var(--c-flag-yellow); }
.page-faq .faq-group:nth-of-type(6) { --accent: var(--c-flag-red); }

.page-faq .faq-group + .faq-group {
  margin-top: clamp(30px, 5.4vw, 58px);
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 4px 12px;
  align-items: baseline;
  padding-bottom: 12px;
  margin-bottom: 16px;
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-group__no {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.12em;
  color: var(--accent);
}

.page-faq .faq-group__head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(20px, 2.6vw, 28px);
  font-weight: 800;
  letter-spacing: -0.01em;
  line-height: 1.25;
}

.page-faq .faq-group__desc {
  grid-column: 2;
  margin: 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--c-dust);
}

/* ── 问答卡片 ── */
.page-faq .faq-item {
  border: 1px solid var(--line-faint);
  border-radius: var(--radius-m);
  background: var(--panel-fill);
  overflow: hidden;
  transition: border-color 160ms var(--ease), box-shadow 160ms var(--ease);
}

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

.page-faq .faq-item:hover {
  border-color: var(--line-strong);
}

.page-faq .faq-item[open] {
  border-color: color-mix(in srgb, var(--accent) 46%, transparent);
  box-shadow: 0 16px 34px -24px color-mix(in srgb, var(--accent) 70%, transparent);
}

.page-faq .faq-item summary {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 15px 16px;
  cursor: pointer;
  list-style: none;
  font-size: clamp(14.5px, 1.7vw, 16.5px);
  font-weight: 600;
  line-height: 1.55;
  color: var(--c-snow);
}

.page-faq .faq-item summary::-webkit-details-marker { display: none; }
.page-faq .faq-item summary::marker { content: ""; }

.page-faq .faq-item__q {
  flex: 1;
  min-width: 0;
}

.page-faq .faq-item summary::after {
  content: "";
  flex: none;
  width: 10px;
  height: 10px;
  margin-top: 6px;
  border-right: 2px solid var(--accent);
  border-bottom: 2px solid var(--accent);
  transform: rotate(45deg);
  transition: transform 160ms var(--ease);
}

.page-faq .faq-item[open] summary::after {
  transform: rotate(225deg);
}

.page-faq .faq-item__a {
  padding: 0 16px 16px;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--c-dust);
}

.page-faq .faq-item__a > p {
  margin: 0 0 10px;
}

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

.page-faq .faq-path {
  display: inline-block;
  margin-top: 4px;
  padding: 4px 11px;
  border: 1px solid color-mix(in srgb, var(--accent) 40%, transparent);
  border-radius: 999px;
  background: color-mix(in srgb, var(--accent) 10%, transparent);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.02em;
  color: var(--accent);
  text-decoration: none;
  transition: background-color 160ms var(--ease), color 160ms var(--ease);
}

.page-faq .faq-path:hover {
  background: var(--accent);
  color: var(--c-night);
}

/* ── 章节配图 ── */
.page-faq .faq-figure {
  margin: 18px 0 0;
  padding: 12px;
  max-width: 340px;
  border: 1px solid var(--line-faint);
  border-radius: var(--radius-m);
  background: rgba(16, 26, 60, 0.6);
}

.page-faq .faq-figure__media {
  border-radius: var(--radius-s);
  overflow: hidden;
  background: #0b1330;
}

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

.page-faq .faq-figure__caption {
  margin: 10px 0 0;
  font-family: var(--font-serif);
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--c-mist);
}

/* ── 尾部承接 ── */
.page-faq .faq-more {
  margin-top: clamp(34px, 6vw, 70px);
  padding-top: clamp(22px, 4vw, 38px);
  border-top: 1px solid var(--line-soft);
}

.page-faq .faq-more h2 {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-size: clamp(19px, 2.4vw, 26px);
  font-weight: 800;
  letter-spacing: -0.01em;
}

.page-faq .faq-more__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
}

.page-faq .faq-more__card {
  display: block;
  padding: 16px 18px;
  border: 1px solid var(--line-faint);
  border-radius: var(--radius-m);
  background: var(--panel-fill);
  text-decoration: none;
  color: var(--c-snow);
  transition: transform 160ms var(--ease), border-color 160ms var(--ease);
}

.page-faq .faq-more__card:hover {
  transform: translateY(-3px);
  border-color: var(--c-teal);
}

.page-faq .faq-more__label {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  color: var(--c-teal);
}

.page-faq .faq-more__card:nth-child(2) .faq-more__label { color: var(--c-ember); }
.page-faq .faq-more__card:nth-child(3) .faq-more__label { color: var(--c-flag-yellow); }

.page-faq .faq-more__text {
  display: block;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--c-dust);
}

/* ── 桌面布局 ── */
@media (min-width: 720px) {
  .page-faq .faq-band {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .faq-figure {
    max-width: 360px;
  }

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

@media (min-width: 960px) {
  .page-faq .faq-shell {
    display: grid;
    grid-template-columns: var(--faq-nav-w) minmax(0, 1fr);
    gap: var(--faq-gap);
    align-items: start;
  }

  .page-faq .faq-nav {
    position: sticky;
    top: 92px;
    margin-bottom: 0;
    padding: 18px;
  }

  .page-faq .faq-nav__list {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 3px;
  }

  .page-faq .faq-nav__link {
    border-radius: var(--radius-s);
    border-color: transparent;
    padding: 9px 10px;
  }

  .page-faq .faq-nav__link:hover {
    border-color: var(--line-faint);
  }

  .page-faq .faq-item summary {
    padding: 17px 20px;
  }

  .page-faq .faq-item__a {
    padding: 0 20px 18px;
  }

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

  .page-faq .faq-group__desc {
    grid-column: 2;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item,
  .page-faq .faq-item summary::after,
  .page-faq .faq-nav__link,
  .page-faq .faq-path,
  .page-faq .faq-more__card {
    transition-duration: 0.001ms;
  }

  .page-faq .faq-more__card:hover {
    transform: none;
  }
}
<<<END>>>