.page-faq {
  --faq-gap: clamp(1rem, 2vw, 1.5rem);
  --faq-pad: clamp(2.75rem, 7vw, 5.5rem);
  background: var(--sb-cream);
  color: var(--sb-ink);
  overflow-x: hidden;
}

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

/* ============ 首屏 ============ */
.page-faq .faq-hero {
  position: relative;
  background: var(--sb-deep);
  color: var(--sb-paper);
  isolation: isolate;
}

.page-faq .faq-hero__bg {
  position: absolute;
  inset: 0;
  z-index: -2;
  overflow: hidden;
}

.page-faq .faq-hero__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 40%;
  opacity: .34;
}

.page-faq .faq-hero__veil {
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(102deg, rgba(11, 27, 43, .96) 0%, rgba(11, 27, 43, .9) 42%, rgba(20, 49, 77, .5) 100%),
    var(--sb-hatch);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: clamp(34px, 5vw, 70px);
  background: var(--sb-cream);
  clip-path: polygon(0 100%, 0 74%, 100% 0, 100% 100%);
  z-index: 2;
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
  padding-top: clamp(1.75rem, 4vw, 3rem);
  padding-bottom: clamp(4.5rem, 9vw, 7.5rem);
}

.page-faq .faq-hero .sb-breadcrumb,
.page-faq .faq-hero .sb-breadcrumb__list {
  color: rgba(242, 234, 221, .68);
  font-size: .78rem;
  letter-spacing: .06em;
}

.page-faq .faq-hero .sb-breadcrumb a {
  color: rgba(242, 234, 221, .68);
  text-decoration: none;
}

.page-faq .faq-hero .sb-breadcrumb a:hover {
  color: var(--sb-cyan);
}

.page-faq .faq-hero .sb-eyebrow {
  display: block;
  margin-top: clamp(1.5rem, 3vw, 2.25rem);
  color: var(--sb-cyan);
}

.page-faq .faq-hero h1 {
  margin: .7rem 0 0;
  max-width: 17ch;
  font-family: var(--sb-font-display);
  font-weight: 900;
  font-size: clamp(1.9rem, 5.4vw, 3.5rem);
  line-height: 1.14;
  letter-spacing: -.02em;
  color: var(--sb-paper);
}

.page-faq .faq-hero__lead {
  margin-top: 1.15rem;
  max-width: 56ch;
  font-size: clamp(.96rem, 1.5vw, 1.08rem);
  line-height: 1.85;
  color: rgba(242, 234, 221, .84);
}

.page-faq .faq-hero__facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem 1.25rem;
  margin: clamp(2rem, 4vw, 3rem) 0 0;
  padding: 0;
  list-style: none;
  max-width: 640px;
}

.page-faq .faq-hero__facts li {
  display: flex;
  align-items: baseline;
  gap: .5rem;
  padding-top: .6rem;
  border-top: 1px solid rgba(47, 214, 198, .28);
}

.page-faq .faq-hero__num {
  font-family: var(--sb-font-mono);
  font-size: clamp(1.4rem, 2.6vw, 1.85rem);
  font-weight: 700;
  letter-spacing: -.01em;
  color: var(--sb-amber);
  line-height: 1;
}

.page-faq .faq-hero__k {
  font-size: .8rem;
  letter-spacing: .04em;
  color: rgba(242, 234, 221, .72);
}

/* ============ 主题索引 ============ */
.page-faq .faq-index {
  background: var(--sb-paper);
  border-bottom: 1px solid var(--sb-line-ink);
}

.page-faq .faq-index__inner {
  display: flex;
  flex-direction: column;
  gap: .85rem;
  padding-top: clamp(1.1rem, 2.4vw, 1.6rem);
  padding-bottom: clamp(1.1rem, 2.4vw, 1.6rem);
}

.page-faq .faq-index__title {
  margin: 0;
  font-size: .72rem;
  letter-spacing: .3em;
  text-transform: uppercase;
  color: var(--sb-slate);
}

.page-faq .faq-index__list {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem .6rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-index__link {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .5rem .9rem;
  background: var(--sb-cream);
  border: 1px solid transparent;
  clip-path: var(--sb-cut);
  color: var(--sb-ink);
  font-size: .86rem;
  font-weight: 500;
  text-decoration: none;
  transition: background-color .2s ease, border-color .2s ease, color .2s ease;
}

.page-faq .faq-index__no {
  font-size: .7rem;
  letter-spacing: .06em;
  color: var(--sb-orange);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  background: var(--sb-deep);
  color: var(--sb-paper);
  border-color: var(--sb-deep);
}

.page-faq .faq-index__link:hover .faq-index__no,
.page-faq .faq-index__link:focus-visible .faq-index__no {
  color: var(--sb-cyan);
}

/* ============ 分组通用 ============ */
.page-faq .faq-group {
  padding: var(--faq-pad) 0;
  scroll-margin-top: 6rem;
}

.page-faq .faq-group--dark {
  background: var(--sb-deep);
  color: var(--sb-paper);
}

.page-faq .faq-group--panel {
  background: var(--sb-deep-2);
  color: var(--sb-paper);
}

.page-faq .faq-group__head {
  max-width: 62ch;
  margin-bottom: clamp(1.75rem, 4vw, 2.75rem);
}

.page-faq .faq-group__head h2 {
  margin: .55rem 0 0;
  font-family: var(--sb-font-display);
  font-weight: 900;
  font-size: clamp(1.45rem, 3.4vw, 2.2rem);
  line-height: 1.22;
  letter-spacing: -.02em;
}

.page-faq .faq-group__lead {
  margin: .9rem 0 0;
  font-size: .98rem;
  line-height: 1.85;
  color: var(--sb-slate);
}

.page-faq .faq-group--dark .faq-group__lead,
.page-faq .faq-group--panel .faq-group__lead {
  color: var(--sb-steel);
}

.page-faq .faq-group--dark .faq-group__head h2,
.page-faq .faq-group--panel .faq-group__head h2 {
  color: var(--sb-paper);
}

/* ============ 图片带 ============ */
.page-faq .faq-media {
  margin: 0 0 clamp(1.75rem, 4vw, 2.75rem);
  background: var(--sb-deep-2);
  clip-path: var(--sb-cut);
  overflow: hidden;
}

.page-faq .faq-media img {
  display: block;
  width: 100%;
  height: clamp(170px, 28vw, 290px);
  object-fit: cover;
}

.page-faq .faq-media figcaption {
  padding: .8rem 1.1rem .9rem;
  font-family: var(--sb-font-mono);
  font-size: .78rem;
  line-height: 1.7;
  letter-spacing: .01em;
  color: rgba(251, 246, 236, .78);
  border-left: 2px solid var(--sb-orange);
}

/* ============ 问答网格 ============ */
.page-faq .faq-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: .9rem;
  align-items: start;
}

.page-faq .faq-item {
  position: relative;
  background: var(--sb-paper);
  border: 1px solid var(--sb-line-ink);
  clip-path: var(--sb-cut);
  transition: background-color .25s ease, border-color .25s ease;
}

.page-faq .faq-item[open] {
  border-color: rgba(226, 86, 26, .42);
}

.page-faq .faq-group--dark .faq-item,
.page-faq .faq-group--panel .faq-item {
  background: rgba(242, 234, 221, .055);
  border-color: rgba(47, 214, 198, .2);
}

.page-faq .faq-group--dark .faq-item[open],
.page-faq .faq-group--panel .faq-item[open] {
  background: rgba(242, 234, 221, .09);
  border-color: rgba(226, 86, 26, .6);
}

.page-faq .faq-item__q {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: .7rem;
  padding: 1.05rem 3.1rem 1.05rem 1.1rem;
  margin: 0;
  cursor: pointer;
  list-style: none;
  font-family: var(--sb-font-body);
  font-weight: 700;
  font-size: .99rem;
  line-height: 1.6;
  color: var(--sb-ink);
  transition: color .2s ease;
}

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

.page-faq .faq-item__q::marker {
  content: "";
}

.page-faq .faq-item__q::after {
  content: "";
  position: absolute;
  right: 1.15rem;
  top: 1.32rem;
  width: 9px;
  height: 9px;
  border-right: 2px solid var(--sb-orange);
  border-bottom: 2px solid var(--sb-orange);
  transform: rotate(45deg);
  transition: transform .25s ease, top .25s ease, border-color .25s ease;
}

.page-faq .faq-item[open] .faq-item__q::after {
  top: 1.55rem;
  transform: rotate(225deg);
  border-color: var(--sb-orange-lt);
}

.page-faq .faq-item__q:hover {
  color: var(--sb-orange);
}

.page-faq .faq-item__q:focus-visible {
  outline: 2px solid var(--sb-cyan);
  outline-offset: -3px;
}

.page-faq .faq-group--dark .faq-item__q,
.page-faq .faq-group--panel .faq-item__q {
  color: var(--sb-paper);
}

.page-faq .faq-group--dark .faq-item__q:hover,
.page-faq .faq-group--panel .faq-item__q:hover {
  color: var(--sb-cyan);
}

.page-faq .faq-item__no {
  flex: 0 0 auto;
  min-width: 1.9rem;
  padding-top: .22rem;
  font-family: var(--sb-font-mono);
  font-size: .71rem;
  font-weight: 500;
  letter-spacing: .08em;
  color: var(--sb-orange);
}

.page-faq .faq-group--dark .faq-item__no,
.page-faq .faq-group--panel .faq-item__no {
  color: var(--sb-cyan);
}

.page-faq .faq-item__a {
  padding: .1rem 1.1rem 1.15rem 3.7rem;
  border-top: 1px dashed var(--sb-line-ink);
  margin: 0 .0rem;
}

.page-faq .faq-group--dark .faq-item__a,
.page-faq .faq-group--panel .faq-item__a {
  border-top-color: rgba(47, 214, 198, .22);
}

.page-faq .faq-item__a p {
  margin: .85rem 0 0;
  font-size: .93rem;
  line-height: 1.88;
  color: var(--sb-slate);
}

.page-faq .faq-group--dark .faq-item__a p,
.page-faq .faq-group--panel .faq-item__a p {
  color: var(--sb-steel);
}

/* ============ 收尾求助区 ============ */
.page-faq .faq-help {
  background: var(--sb-deep);
  color: var(--sb-paper);
  position: relative;
  padding: var(--faq-pad) 0;
  overflow: hidden;
}

.page-faq .faq-help::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--sb-hatch);
  pointer-events: none;
}

.page-faq .faq-help__inner {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(2rem, 5vw, 3.5rem);
}

.page-faq .faq-help__copy h2 {
  margin: .6rem 0 0;
  font-family: var(--sb-font-display);
  font-weight: 900;
  font-size: clamp(1.4rem, 3.2vw, 2.1rem);
  line-height: 1.24;
  letter-spacing: -.02em;
  color: var(--sb-paper);
}

.page-faq .faq-help__copy p {
  margin: 1rem 0 0;
  max-width: 46ch;
  font-size: .96rem;
  line-height: 1.88;
  color: rgba(242, 234, 221, .82);
}

.page-faq .faq-help__copy .sb-btn {
  margin-top: 1.6rem;
}

.page-faq .faq-help__channels {
  display: grid;
  gap: .9rem;
  align-content: start;
}

.page-faq .faq-help__ch {
  display: flex;
  flex-direction: column;
  gap: .35rem;
  padding: 1.1rem 1.2rem;
  background: rgba(242, 234, 221, .06);
  border-left: 3px solid var(--sb-orange);
  clip-path: var(--sb-cut);
}

.page-faq .faq-help__k {
  font-size: .7rem;
  letter-spacing: .14em;
  color: var(--sb-cyan);
}

.page-faq .faq-help__v {
  font-size: .95rem;
  font-weight: 700;
  line-height: 1.6;
  color: var(--sb-paper);
  word-break: break-word;
}

.page-faq .faq-help__note {
  font-size: .82rem;
  line-height: 1.7;
  color: var(--sb-steel);
}

.page-faq .faq-next {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: .9rem;
  padding-top: clamp(1.5rem, 3vw, 2.25rem);
  border-top: 1px solid rgba(47, 214, 198, .24);
}

.page-faq .faq-next__item {
  display: flex;
  flex-direction: column;
  gap: .4rem;
  padding: 1rem 1.1rem;
  background: rgba(11, 27, 43, .5);
  border: 1px solid rgba(147, 162, 178, .28);
  clip-path: var(--sb-cut);
  text-decoration: none;
  transition: border-color .22s ease, background-color .22s ease, transform .22s ease;
}

.page-faq .faq-next__item:hover,
.page-faq .faq-next__item:focus-visible {
  border-color: var(--sb-orange);
  background: rgba(226, 86, 26, .12);
  transform: translateY(-2px);
}

.page-faq .faq-next__k {
  font-size: .72rem;
  letter-spacing: .16em;
  color: var(--sb-amber);
}

.page-faq .faq-next__t {
  font-size: .92rem;
  line-height: 1.65;
  color: rgba(242, 234, 221, .88);
}

/* ============ 响应式 ============ */
@media (min-width: 640px) {
  .page-faq .faq-index__inner {
    flex-direction: row;
    align-items: center;
    gap: 1.4rem;
    flex-wrap: wrap;
  }

  .page-faq .faq-index__title {
    flex: 0 0 auto;
  }

  .page-faq .faq-hero__facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .faq-next {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 820px) {
  .page-faq .faq-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.1rem 2rem;
  }

  .page-faq .faq-grid > *:nth-child(even) {
    margin-top: 2.2rem;
  }

  .page-faq .faq-help__inner {
    grid-template-columns: minmax(0, 5fr) minmax(0, 4fr);
  }
}

@media (min-width: 1100px) {
  .page-faq .faq-hero__lead {
    font-size: 1.1rem;
  }

  .page-faq .faq-grid {
    gap: 1.25rem 2.75rem;
  }

  .page-faq .faq-grid > *:nth-child(even) {
    margin-top: 3rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-next__item,
  .page-faq .faq-item__q::after {
    transition: none;
  }

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