.page-faq {
  background: var(--space);
  color: var(--white);
  overflow-x: hidden;
}

.page-faq img {
  display: block;
  max-width: 100%;
  height: auto;
}

.page-faq .faq-hero {
  position: relative;
  padding: clamp(1.5rem, 4vw, 2.5rem) 0 clamp(2.5rem, 6vw, 4.5rem);
  background:
    radial-gradient(120% 80% at 88% -10%, rgba(0, 229, 255, .18), transparent 62%),
    radial-gradient(90% 70% at 2% 108%, rgba(255, 107, 53, .16), transparent 66%),
    linear-gradient(180deg, var(--space) 0%, var(--space-deep) 100%);
  border-bottom: 1px solid var(--hair);
}

.page-faq .faq-hero .breadcrumb {
  margin-bottom: clamp(1.5rem, 4vw, 2.5rem);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(1.5rem, 4vw, 2.5rem);
}

.page-faq .faq-hero__intro .eyebrow {
  color: var(--cyan);
  letter-spacing: .18em;
}

.page-faq .faq-hero__intro h1 {
  margin: .6rem 0 1rem;
  font-size: clamp(2rem, 5.2vw, 3.6rem);
  line-height: 1.08;
  letter-spacing: -.02em;
}

.page-faq .faq-hero__intro .lede {
  max-width: 56ch;
  color: var(--mist);
  font-size: clamp(1rem, 1.6vw, 1.08rem);
  line-height: 1.8;
}

.page-faq .faq-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem 2rem;
  margin-top: 1.5rem;
  padding-top: 1.25rem;
  border-top: 1px dashed var(--hair-strong);
}

.page-faq .faq-hero__fact {
  display: flex;
  align-items: baseline;
  gap: .5rem;
}

.page-faq .faq-hero__fact .data-num {
  color: var(--orange);
  font-family: var(--font-mono);
  font-size: clamp(1.35rem, 2.4vw, 1.85rem);
  line-height: 1;
}

.page-faq .faq-hero__fact-label {
  font-size: .82rem;
  color: var(--mist);
  letter-spacing: .04em;
}

.page-faq .faq-hero__media {
  position: relative;
  border: 1px solid var(--hair);
  background: linear-gradient(140deg, rgba(16, 44, 79, .9), rgba(7, 20, 39, .9));
  overflow: hidden;
}

.page-faq .faq-hero__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(90deg, transparent 0 39px, rgba(0, 229, 255, .07) 39px 40px);
  pointer-events: none;
}

.page-faq .faq-hero__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  aspect-ratio: 16 / 7;
}

/* ---------- 搜索区 ---------- */
.page-faq .faq-search {
  background: var(--space-deep);
  padding: 0 0 clamp(2rem, 5vw, 3.5rem);
}

.page-faq .faq-search__card {
  position: relative;
  background: var(--paper);
  color: var(--graphite);
  padding: clamp(1.25rem, 3vw, 2.25rem);
  border-radius: var(--radius);
  box-shadow: 0 24px 60px rgba(0, 0, 0, .35);
  margin-top: clamp(1.75rem, 4vw, 2.75rem);
}

.page-faq .faq-search__card::before {
  content: "";
  position: absolute;
  top: 0;
  left: clamp(1.25rem, 3vw, 2.25rem);
  width: 72px;
  height: 3px;
  background: var(--orange);
}

.page-faq .faq-search__head h2 {
  margin: .5rem 0 .4rem;
  font-size: clamp(1.3rem, 2.4vw, 1.75rem);
  line-height: 1.2;
  color: var(--space);
  letter-spacing: -.01em;
}

.page-faq .faq-search__head p {
  max-width: 60ch;
  margin: 0 0 1.25rem;
  font-size: .94rem;
  line-height: 1.7;
  color: #3d4552;
}

.page-faq .faq-search .search-field {
  display: block;
  margin-bottom: 1.5rem;
}

.page-faq .faq-search .search-field__label {
  display: block;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: #55606f;
  margin-bottom: .45rem;
}

.page-faq .faq-search .search-input {
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
  padding: .85rem 1rem;
  font-family: inherit;
  font-size: 1rem;
  color: var(--space);
  background: #fff;
  border: 1px solid rgba(42, 46, 53, .28);
  border-radius: var(--radius);
  transition: border-color .25s var(--ease), box-shadow .25s var(--ease);
}

.page-faq .faq-search .search-input:focus {
  outline: none;
  border-color: var(--cyan);
  box-shadow: 0 0 0 3px rgba(0, 229, 255, .22);
}

.page-faq .faq-search .search-field__hint {
  margin: .5rem 0 0;
  font-size: .8rem;
  color: #56606d;
}

.page-faq .faq-search__index {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: rgba(42, 46, 53, .16);
  border-top: 1px solid rgba(42, 46, 53, .16);
}

.page-faq .faq-search__index .search-index__item {
  background: var(--paper);
}

.page-faq .faq-search__index .search-index__link {
  display: flex;
  align-items: baseline;
  gap: .7rem;
  padding: .62rem .25rem .62rem .1rem;
  text-decoration: none;
  color: var(--space);
  border-left: 2px solid transparent;
  transition: border-color .2s var(--ease), background .2s var(--ease), padding-left .2s var(--ease);
}

.page-faq .faq-search__index .search-index__link:hover,
.page-faq .faq-search__index .search-index__link:focus-visible {
  border-left-color: var(--cyan);
  padding-left: .55rem;
  background: rgba(0, 229, 255, .1);
}

.page-faq .faq-search__index .search-index__num {
  font-family: var(--font-mono);
  font-size: .74rem;
  color: var(--orange);
  letter-spacing: .06em;
  flex: 0 0 auto;
}

.page-faq .faq-search__index .search-index__label {
  flex: 1 1 auto;
  min-width: 0;
  font-size: .92rem;
  line-height: 1.5;
}

.page-faq .faq-search__index .search-index__route {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .05em;
  color: #6a7484;
  display: none;
}

.page-faq .search-empty {
  margin: 1.1rem 0 0;
  padding: .85rem 1rem;
  font-size: .9rem;
  line-height: 1.6;
  color: var(--space);
  background: rgba(255, 107, 53, .18);
  border-left: 3px solid var(--orange);
}

/* ---------- 分类块 ---------- */
.page-faq .faq-cats {
  background: var(--space);
  padding: 0 0 clamp(2rem, 5vw, 3.5rem);
}

.page-faq .faq-cats__title {
  font-size: clamp(1.05rem, 2vw, 1.3rem);
  color: var(--white);
  margin: 0 0 1rem;
  letter-spacing: .01em;
}

.page-faq .faq-cats__track {
  display: flex;
  gap: .85rem;
  overflow-x: auto;
  padding-bottom: .75rem;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-cat {
  --accent: var(--cyan);
  flex: 0 0 min(79vw, 250px);
  scroll-snap-align: start;
  display: flex;
  flex-direction: column;
  gap: .35rem;
  padding: 1rem 1rem 1.15rem;
  text-decoration: none;
  color: var(--white);
  background: linear-gradient(160deg, rgba(16, 44, 79, .95), rgba(7, 20, 39, .95));
  border: 1px solid var(--hair);
  border-top: 3px solid var(--accent);
  border-radius: var(--radius);
  transition: transform .25s var(--ease), border-color .25s var(--ease);
}

.page-faq .faq-cat:hover,
.page-faq .faq-cat:focus-visible {
  transform: translateY(-3px);
  border-color: var(--accent);
}

.page-faq .faq-cat--cyan { --accent: var(--cyan); }
.page-faq .faq-cat--orange { --accent: var(--orange); }
.page-faq .faq-cat--ice { --accent: var(--ice); }
.page-faq .faq-cat--mist { --accent: var(--mist); }
.page-faq .faq-cat--paper { --accent: var(--paper); }

.page-faq .faq-cat__num {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .12em;
  color: var(--accent);
}

.page-faq .faq-cat__name {
  font-size: 1.02rem;
  font-weight: 700;
  letter-spacing: -.01em;
}

.page-faq .faq-cat__text {
  font-size: .8rem;
  line-height: 1.6;
  color: var(--mist);
}

.page-faq .faq-cat__count {
  margin-top: .35rem;
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .06em;
  color: rgba(245, 247, 250, .55);
}

/* ---------- 主体与目录 ---------- */
.page-faq .faq-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(2rem, 5vw, 3rem);
  padding-bottom: clamp(3rem, 8vw, 6rem);
}

.page-faq .faq-body__main {
  min-width: 0;
}

.page-faq .faq-sec {
  padding: clamp(1.5rem, 3.5vw, 2.25rem) 0 clamp(1.75rem, 4vw, 2.75rem);
  border-top: 1px solid var(--hair);
  scroll-margin-top: 1.5rem;
}

.page-faq .faq-sec__head .eyebrow {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .16em;
  color: var(--cyan);
  margin: 0 0 .55rem;
}

.page-faq .faq-sec__head h2 {
  margin: 0 0 .7rem;
  font-size: clamp(1.5rem, 3.2vw, 2.15rem);
  line-height: 1.15;
  letter-spacing: -.02em;
}

.page-faq .faq-sec__intro {
  max-width: 62ch;
  margin: 0 0 1.25rem;
  font-size: .96rem;
  line-height: 1.8;
  color: var(--mist);
}

.page-faq .faq-sec__figure {
  margin: 0 0 1.35rem;
  border: 1px solid var(--hair);
  background: linear-gradient(150deg, rgba(16, 44, 79, .85), rgba(7, 20, 39, .85));
}

.page-faq .faq-sec__figure img {
  width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 10 / 7;
}

.page-faq .faq-sec__figure .media-frame__caption {
  padding: .6rem .9rem;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .04em;
  color: var(--mist);
  border-top: 1px solid var(--hair);
}

.page-faq .faq-list {
  display: grid;
  gap: .5rem;
}

.page-faq .faq-item {
  background: rgba(16, 44, 79, .42);
  border-left: 2px solid var(--hair-strong);
  border-radius: var(--radius);
  transition: border-color .25s var(--ease), background .25s var(--ease);
}

.page-faq .faq-item:hover {
  border-left-color: rgba(0, 229, 255, .55);
}

.page-faq .faq-item[open] {
  background: rgba(16, 44, 79, .85);
  border-left-color: var(--cyan);
}

.page-faq .faq-item summary {
  display: flex;
  align-items: baseline;
  gap: .7rem;
  padding: .85rem 1rem;
  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(--cyan);
  outline-offset: 2px;
}

.page-faq .faq-item__num {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .06em;
  color: var(--orange);
  padding-top: .1rem;
}

.page-faq .faq-item__q {
  flex: 1 1 auto;
  min-width: 0;
  font-size: .98rem;
  font-weight: 600;
  line-height: 1.55;
  color: var(--white);
}

.page-faq .faq-item summary::after {
  content: "+";
  flex: 0 0 auto;
  margin-left: .5rem;
  font-family: var(--font-mono);
  font-size: 1.15rem;
  line-height: 1;
  color: var(--cyan);
  transition: color .2s var(--ease);
}

.page-faq .faq-item[open] summary::after {
  content: "−";
  color: var(--orange);
}

.page-faq .faq-item__a {
  padding: 0 1rem .95rem 1rem;
  border-top: 1px dashed rgba(143, 161, 184, .18);
  margin-top: .1rem;
  animation: faq-answer-in .28s var(--ease) both;
}

.page-faq .faq-item__a p {
  max-width: 66ch;
  margin: .8rem 0 0;
  font-size: .93rem;
  line-height: 1.85;
  color: rgba(245, 247, 250, .84);
}

.page-faq .faq-item__a p + p {
  margin-top: .5rem;
}

@keyframes faq-answer-in {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: translateY(0); }
}

.page-faq .faq-sec__more {
  margin: 1.15rem 0 0;
  font-size: .88rem;
  color: var(--mist);
}

.page-faq .faq-sec__more a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 229, 255, .4);
  transition: border-color .2s var(--ease), color .2s var(--ease);
}

.page-faq .faq-sec__more a:hover,
.page-faq .faq-sec__more a:focus-visible {
  color: var(--ice);
  border-bottom-color: var(--ice);
}

/* ---------- 联系卡 ---------- */
.page-faq .faq-sec--contact {
  border-top: 1px solid var(--hair-strong);
}

.page-faq .faq-contact {
  margin-top: 1.25rem;
  padding: clamp(1.1rem, 2.6vw, 1.6rem);
  background: var(--paper);
  color: var(--graphite);
  border-radius: var(--radius);
  border-left: 4px solid var(--orange);
}

.page-faq .faq-contact__row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .35rem .75rem;
  padding: .6rem 0;
  border-bottom: 1px dashed rgba(42, 46, 53, .22);
}

.page-faq .faq-contact__key {
  flex: 0 0 auto;
  min-width: 4.6rem;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .1em;
  color: #5a6472;
}

.page-faq .faq-contact__val {
  flex: 1 1 auto;
  min-width: 0;
  font-family: var(--font-mono);
  font-size: .86rem;
  line-height: 1.6;
  color: var(--space);
  word-break: break-word;
}

.page-faq .faq-contact__actions {
  display: flex;
  flex-wrap: wrap;
  gap: .65rem;
  margin-top: 1.1rem;
}

/* ---------- 侧边目录 ---------- */
.page-faq .faq-toc {
  display: none;
}

/* ---------- 桌面端 ---------- */
@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    align-items: center;
  }

  .page-faq .faq-cats__track {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    overflow: visible;
    padding-bottom: 0;
    gap: .7rem;
  }

  .page-faq .faq-cat {
    flex: initial;
  }

  .page-faq .faq-search__index {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 1.5rem;
  }

  .page-faq .faq-search__index .search-index__route {
    display: inline;
  }

  .page-faq .faq-body {
    grid-template-columns: minmax(0, 1fr) 224px;
    align-items: start;
  }

  .page-faq .faq-toc {
    display: block;
    position: sticky;
    top: 1.5rem;
    order: 2;
  }

  .page-faq .faq-toc__title {
    margin: 0 0 .85rem;
    font-family: var(--font-mono);
    font-size: .7rem;
    letter-spacing: .16em;
    text-transform: uppercase;
    color: var(--mist);
  }

  .page-faq .faq-toc__list {
    list-style: none;
    margin: 0;
    padding: 0 0 0 1rem;
    border-left: 1px solid var(--hair);
  }

  .page-faq .faq-toc__list li {
    position: relative;
    margin-bottom: .7rem;
  }

  .page-faq .faq-toc__list li::before {
    content: "";
    position: absolute;
    left: -1rem;
    top: .72em;
    width: .6rem;
    height: 1px;
    background: var(--hair-strong);
    transition: background .2s var(--ease), width .2s var(--ease);
  }

  .page-faq .faq-toc__list li:hover::before {
    background: var(--cyan);
    width: .85rem;
  }

  .page-faq .faq-toc__list a {
    display: flex;
    align-items: baseline;
    gap: .5rem;
    text-decoration: none;
    font-size: .86rem;
    line-height: 1.5;
    color: var(--mist);
    transition: color .2s var(--ease);
  }

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

  .page-faq .faq-toc__num {
    font-family: var(--font-mono);
    font-size: .68rem;
    letter-spacing: .06em;
    color: rgba(255, 107, 53, .85);
  }

  .page-faq .faq-toc__help {
    margin-top: 1.5rem;
    padding-top: 1.1rem;
    border-top: 1px dashed var(--hair-strong);
  }

  .page-faq .faq-toc__help p {
    margin: 0 0 .65rem;
    font-size: .82rem;
    line-height: 1.6;
    color: var(--mist);
  }

  .page-faq .faq-toc__help .btn {
    width: 100%;
    text-align: center;
  }

  .page-faq .faq-item__q {
    font-size: 1.02rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item__a {
    animation: none;
  }

  .page-faq .faq-cat,
  .page-faq .faq-search__index .search-index__link,
  .page-faq .faq-item {
    transition: none;
  }
}
<<<END>>>