.page-faq {
  --faq-ink: var(--navy-950);
  --faq-ink-soft: rgba(16, 42, 68, .78);
  --faq-paper-sheen: rgba(255, 255, 255, .58);
  --faq-rule: var(--haze);
  --faq-anchor-offset: calc(var(--bar-h) + 1rem);
  background: var(--navy-950);
  color: var(--paper);
  overflow-x: hidden;
}

.page-faq .wrap {
  max-width: 1180px;
  margin: 0 auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}

/* ---------- 封面 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(1.25rem, 4vw, 2.5rem) 0 clamp(2rem, 6vw, 3.5rem);
  border-bottom: 1px solid var(--navy-700);
  background:
    radial-gradient(115% 80% at 88% 2%, rgba(0, 229, 255, .17), transparent 62%),
    radial-gradient(85% 70% at 2% 98%, rgba(255, 176, 32, .13), transparent 66%),
    var(--navy-950);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(27, 69, 102, .45) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(27, 69, 102, .32) 1px, transparent 1px);
  background-size: 68px 68px;
  -webkit-mask-image: linear-gradient(to bottom, rgba(0, 0, 0, .9), transparent 76%);
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, .9), transparent 76%);
}

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

.page-faq .faq-hero .breadcrumb-list {
  font-size: .82rem;
  color: var(--steel);
}

.page-faq .faq-hero .breadcrumb-list a {
  color: var(--cyan-300);
  text-decoration: none;
}

.page-faq .faq-hero .breadcrumb-list a:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-hero-grid {
  display: grid;
  gap: 1.5rem;
  margin-top: 1.25rem;
}

.page-faq .faq-hero-copy {
  order: 1;
}

.page-faq .scene-nav {
  order: 2;
}

.page-faq .faq-hero-figure {
  order: 3;
}

.page-faq .faq-kicker {
  display: flex;
  align-items: center;
  gap: .6rem;
  margin: 0;
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--cyan-300);
}

.page-faq .faq-kicker-num {
  padding: .16rem .45rem;
  border-radius: 2px;
  background: var(--amber-500);
  color: var(--navy-950);
  font-weight: 700;
  letter-spacing: .1em;
}

.page-faq .faq-hero h1 {
  margin: .85rem 0 0;
  font-family: var(--font-heading);
  font-size: clamp(2.05rem, 7vw, 4.2rem);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -.03em;
  color: var(--paper);
  text-shadow: 0 0 42px rgba(0, 229, 255, .18);
}

.page-faq .faq-lede {
  max-width: 54ch;
  margin: 1rem 0 0;
  font-size: clamp(1rem, 2.2vw, 1.1rem);
  line-height: 1.85;
  color: var(--steel);
}

.page-faq .faq-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
  margin-top: 1.5rem;
}

.page-faq .faq-hero-figure {
  margin: 0;
  border: 1px solid var(--navy-700);
  border-radius: var(--radius);
  background: var(--navy-900);
  overflow: hidden;
  box-shadow: 0 0 0 1px rgba(0, 229, 255, .1), 0 26px 60px -34px rgba(0, 229, 255, .65);
}

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

/* 场景导航 */
.page-faq .scene-nav {
  list-style: none;
  margin: 1.5rem 0 0;
  padding: 0;
  display: grid;
  gap: .7rem;
  grid-template-columns: repeat(auto-fit, minmax(146px, 1fr));
}

.page-faq .scene-link {
  display: flex;
  flex-direction: column;
  gap: .32rem;
  height: 100%;
  padding: .9rem 1rem 1rem;
  border: 1px solid var(--navy-700);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(16, 42, 68, .95), rgba(10, 27, 46, .95));
  color: var(--paper);
  text-decoration: none;
  transition: transform .22s var(--ease), border-color .22s var(--ease), box-shadow .22s var(--ease);
}

.page-faq .scene-link:hover,
.page-faq .scene-link:focus-visible {
  transform: translateY(-3px);
  border-color: var(--cyan-500);
  box-shadow: 0 0 0 1px rgba(0, 229, 255, .35), 0 18px 34px -24px rgba(0, 229, 255, .9);
}

.page-faq .scene-num {
  font-family: var(--font-mono);
  font-size: clamp(1.6rem, 5vw, 2.1rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.03em;
  color: var(--amber-500);
}

.page-faq .scene-name {
  font-size: .95rem;
  font-weight: 700;
  line-height: 1.45;
}

.page-faq .scene-meta {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .06em;
  color: var(--steel);
}

/* ---------- 纸白问答区 ---------- */
.page-faq .faq-body {
  padding: clamp(2rem, 5vw, 3.4rem) 0 clamp(2.5rem, 6vw, 4rem);
  background: var(--paper);
  color: var(--navy-900);
  border-top: 2px solid var(--haze);
  scroll-margin-top: var(--faq-anchor-offset);
}

.page-faq .faq-body-head {
  max-width: 62ch;
}

.page-faq .faq-eyebrow {
  margin: 0 0 .5rem;
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--navy-700);
}

.page-faq .faq-body-head h2 {
  margin: 0;
  font-family: var(--font-heading);
  font-size: clamp(1.55rem, 4.4vw, 2.35rem);
  line-height: 1.16;
  letter-spacing: -.02em;
  color: var(--faq-ink);
}

.page-faq .faq-body-lede {
  margin: .85rem 0 0;
  font-size: .98rem;
  line-height: 1.8;
  color: var(--faq-ink-soft);
}

.page-faq .faq-layout {
  display: grid;
  gap: 1.6rem;
  margin-top: clamp(1.5rem, 4vw, 2.4rem);
}

/* 侧边目录 */
.page-faq .faq-toc {
  border: 1px solid var(--faq-rule);
  border-left: 3px solid var(--amber-500);
  border-radius: var(--radius);
  background: var(--faq-paper-sheen);
  padding: .9rem .9rem 1rem;
}

.page-faq .faq-toc-title {
  margin: 0;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--navy-700);
}

.page-faq .faq-toc-list {
  list-style: none;
  margin: .7rem 0 0;
  padding: 0 0 .3rem;
  display: flex;
  gap: .45rem;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-faq .faq-toc-link {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding: .45rem .75rem;
  border: 1px solid var(--faq-rule);
  border-radius: 999px;
  font-size: .84rem;
  line-height: 1.4;
  white-space: nowrap;
  color: var(--navy-800);
  text-decoration: none;
  transition: border-color .2s var(--ease), color .2s var(--ease), background-color .2s var(--ease);
}

.page-faq .faq-toc-link:hover {
  border-color: var(--cyan-500);
  color: var(--faq-ink);
}

.page-faq .faq-toc-link[aria-current] {
  border-color: var(--amber-500);
  color: var(--faq-ink);
  font-weight: 700;
}

.page-faq .faq-toc-num {
  font-family: var(--font-mono);
  font-size: .74rem;
  color: var(--navy-700);
}

.page-faq .faq-aside-figure {
  margin: 1.1rem 0 0;
  padding: .55rem;
  border: 1px solid var(--faq-rule);
  border-radius: var(--radius);
  background: var(--faq-paper-sheen);
}

.page-faq .faq-aside-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  border-radius: 2px;
}

.page-faq .media-caption {
  margin-top: .55rem;
  font-size: .78rem;
  line-height: 1.65;
  color: var(--faq-ink-soft);
}

/* 问题组 */
.page-faq .faq-groups {
  display: grid;
  gap: clamp(1.6rem, 4vw, 2.5rem);
}

.page-faq .faq-group {
  scroll-margin-top: var(--faq-anchor-offset);
}

.page-faq .group-head {
  display: flex;
  align-items: flex-start;
  gap: .85rem;
  padding-bottom: .8rem;
  border-bottom: 2px solid var(--navy-950);
}

.page-faq .group-num {
  flex: none;
  margin-top: .15rem;
  padding: .2rem .42rem;
  border-radius: 2px;
  background: var(--navy-950);
  color: var(--amber-500);
  font-family: var(--font-mono);
  font-size: .82rem;
  font-weight: 700;
  letter-spacing: .08em;
}

.page-faq .group-title {
  margin: 0;
  font-family: var(--font-heading);
  font-size: clamp(1.12rem, 3vw, 1.4rem);
  line-height: 1.3;
  letter-spacing: -.01em;
  color: var(--faq-ink);
}

.page-faq .group-sub {
  margin: .4rem 0 0;
  font-size: .9rem;
  line-height: 1.7;
  color: var(--faq-ink-soft);
}

/* 折叠问答 */
.page-faq .qa {
  border-bottom: 1px solid var(--faq-rule);
}

.page-faq .qa-summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: start;
  gap: .65rem;
  padding: 1rem .25rem;
  border-radius: var(--radius);
  list-style: none;
  cursor: pointer;
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.6;
  color: var(--faq-ink);
  transition: background-color .2s var(--ease), color .2s var(--ease);
}

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

.page-faq .qa-summary:hover {
  background: rgba(0, 229, 255, .09);
  color: var(--navy-700);
}

.page-faq .qa-summary:focus-visible {
  outline: 2px solid var(--cyan-500);
  outline-offset: 2px;
}

.page-faq .qa-num {
  padding-top: .24rem;
  font-family: var(--font-mono);
  font-size: .76rem;
  font-weight: 600;
  letter-spacing: .04em;
  color: var(--navy-700);
}

.page-faq .qa-mark {
  position: relative;
  width: 18px;
  height: 18px;
  margin-top: .2rem;
}

.page-faq .qa-mark::before,
.page-faq .qa-mark::after {
  content: "";
  position: absolute;
  background: var(--cyan-500);
  border-radius: 1px;
  transition: transform .22s var(--ease), opacity .22s var(--ease);
}

.page-faq .qa-mark::before {
  top: 8px;
  left: 0;
  width: 18px;
  height: 2px;
}

.page-faq .qa-mark::after {
  top: 0;
  left: 8px;
  width: 2px;
  height: 18px;
}

.page-faq .qa[open] .qa-mark::after {
  transform: scaleY(0);
  opacity: 0;
}

.page-faq .qa[open] .qa-summary {
  color: var(--navy-800);
}

.page-faq .qa-body {
  max-width: 64ch;
  margin: 0 .25rem 1.15rem;
  padding: .1rem 0 .15rem .95rem;
  border-left: 3px solid var(--cyan-500);
  font-size: .97rem;
  line-height: 1.85;
  color: var(--faq-ink-soft);
}

.page-faq .qa-body p {
  margin: 0 0 .7rem;
}

.page-faq .qa-body p:last-child {
  margin-bottom: 0;
}

.page-faq .qa-lead {
  font-weight: 600;
  color: var(--faq-ink);
}

.page-faq .qa-body a {
  color: var(--faq-ink);
  text-decoration: underline;
  text-decoration-color: var(--cyan-500);
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

.page-faq .qa-body a:hover {
  color: var(--navy-700);
  text-decoration-color: var(--amber-500);
}

/* ---------- 咨询收束 ---------- */
.page-faq .faq-assist {
  padding: clamp(2rem, 5vw, 3.5rem) 0 clamp(2.5rem, 6vw, 4rem);
  border-top: 1px solid var(--navy-700);
  background: linear-gradient(180deg, var(--navy-900), var(--navy-950));
  color: var(--paper);
  scroll-margin-top: var(--faq-anchor-offset);
}

.page-faq .faq-assist-inner {
  display: grid;
  gap: 1.5rem;
}

.page-faq .faq-assist .faq-eyebrow {
  color: var(--cyan-300);
}

.page-faq .faq-assist h2 {
  margin: .2rem 0 0;
  font-family: var(--font-heading);
  font-size: clamp(1.6rem, 4.6vw, 2.5rem);
  line-height: 1.14;
  letter-spacing: -.025em;
  color: var(--paper);
}

.page-faq .faq-assist-lede {
  max-width: 52ch;
  margin: .9rem 0 0;
  font-size: .98rem;
  line-height: 1.85;
  color: var(--steel);
}

.page-faq .faq-assist-actions {
  display: flex;
  flex-wrap: wrap;
  gap: .7rem;
  margin-top: 1.4rem;
}

.page-faq .assist-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .6rem;
}

.page-faq .assist-list li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: .75rem;
  align-items: start;
  padding: .8rem .9rem;
  border: 1px solid var(--navy-700);
  border-radius: var(--radius);
  background: var(--navy-900);
  font-size: .9rem;
  line-height: 1.7;
  color: var(--paper);
}

.page-faq .assist-key {
  padding-top: .12rem;
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .1em;
  color: var(--amber-500);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-hero-grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
    grid-template-rows: auto auto;
    gap: 1.75rem 2.25rem;
    align-items: center;
  }

  .page-faq .faq-hero-copy {
    grid-column: 1;
    grid-row: 1;
  }

  .page-faq .faq-hero-figure {
    grid-column: 2;
    grid-row: 1;
  }

  .page-faq .scene-nav {
    grid-column: 1 / -1;
    grid-row: 2;
    margin-top: .25rem;
  }

  .page-faq .faq-assist-actions {
    margin-top: 1.6rem;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-layout {
    grid-template-columns: 238px minmax(0, 1fr);
    gap: clamp(1.5rem, 3vw, 2.75rem);
    align-items: start;
  }

  .page-faq .faq-aside {
    position: sticky;
    top: 1.5rem;
    align-self: start;
  }

  .page-faq .faq-toc-list {
    flex-direction: column;
    gap: .1rem;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-toc-link {
    border: 0;
    border-left: 2px solid transparent;
    border-radius: 0;
    padding: .4rem .2rem .4rem .65rem;
    white-space: normal;
    font-size: .89rem;
  }

  .page-faq .faq-toc-link:hover {
    border-left-color: var(--cyan-500);
  }

  .page-faq .faq-toc-link[aria-current] {
    border-left-color: var(--amber-500);
  }

  .page-faq .faq-assist-inner {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
    gap: 2.5rem;
    align-items: start;
  }
}

@media (min-width: 1080px) {
  .page-faq .scene-nav {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .scene-link,
  .page-faq .qa-summary,
  .page-faq .qa-mark::before,
  .page-faq .qa-mark::after {
    transition: none;
  }

  .page-faq .scene-link:hover,
  .page-faq .scene-link:focus-visible {
    transform: none;
  }
}
<<<END>>>