.page-faq {
  --faq-panel: rgba(13, 35, 64, .55);
  --faq-panel-solid: #0A1B31;
  --faq-line-soft: rgba(107, 135, 168, .18);
  position: relative;
  overflow-x: hidden;
  background: var(--bg);
  color: var(--text);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  isolation: isolate;
  padding: clamp(1.5rem, 5vw, 3rem) 0 clamp(2rem, 5vw, 3.25rem);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}

.page-faq .faq-hero-media {
  position: absolute;
  inset: 0;
  z-index: -2;
}

.page-faq .faq-hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 72% 42%;
  filter: saturate(.6) brightness(.85);
}

.page-faq .faq-hero-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(102deg, var(--ink-900) 20%, rgba(7, 20, 38, .9) 52%, rgba(7, 20, 38, .34) 100%),
    linear-gradient(0deg, var(--bg) 2%, rgba(7, 20, 38, 0) 42%);
}

.page-faq .faq-qmark {
  position: absolute;
  right: -6%;
  bottom: -24%;
  z-index: -1;
  font-family: var(--font-mono);
  font-size: clamp(13rem, 40vw, 28rem);
  font-weight: 800;
  line-height: .72;
  color: rgba(53, 224, 208, .05);
  -webkit-text-stroke: 1px rgba(53, 224, 208, .2);
  transform: rotate(-7deg);
  pointer-events: none;
  user-select: none;
}

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

.page-faq .breadcrumb {
  margin-bottom: clamp(1.25rem, 3vw, 2rem);
}

.page-faq .faq-title {
  max-width: 22ch;
  margin: .55rem 0 0;
  font-size: clamp(1.95rem, 6.2vw, 3.75rem);
  font-weight: 800;
  line-height: 1.06;
  letter-spacing: -.02em;
  color: var(--ice);
}

.page-faq .faq-lede {
  max-width: 58ch;
  margin: clamp(.9rem, 2.4vw, 1.35rem) 0 0;
  color: var(--text);
}

.page-faq .faq-jump {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  list-style: none;
  margin: clamp(1.35rem, 3.6vw, 2.1rem) 0 0;
  padding: 0;
  counter-reset: jump;
}

.page-faq .faq-jump a {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .48rem .85rem;
  font-size: .8125rem;
  font-weight: 600;
  color: var(--silver);
  text-decoration: none;
  background: rgba(2, 8, 18, .55);
  border: 1px solid var(--line-strong);
  border-left: 2px solid var(--cyan);
  transition: color .2s var(--ease), background .2s var(--ease), transform .2s var(--ease);
}

.page-faq .faq-jump a::before {
  counter-increment: jump;
  content: counter(jump, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: .6875rem;
  font-weight: 700;
  color: var(--cyan);
  letter-spacing: .04em;
}

.page-faq .faq-jump a:hover,
.page-faq .faq-jump a:focus-visible {
  color: var(--ice);
  background: rgba(53, 224, 208, .12);
  transform: translateY(-1px);
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  padding-block: clamp(1.5rem, 4vw, 3rem);
}

.page-faq .faq-index {
  padding: 1rem .9rem;
  background: var(--faq-panel);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 0 100%);
}

.page-faq .faq-index-title {
  margin: 0 0 .7rem;
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .1em;
  color: var(--steel);
}

.page-faq .faq-index-list {
  display: grid;
  gap: .1rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .faq-index-list a {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: baseline;
  gap: .6rem;
  padding: .48rem .5rem;
  font-size: .875rem;
  color: var(--silver);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: color .18s var(--ease), background .18s var(--ease), border-color .18s var(--ease);
}

.page-faq .faq-index-list a:hover,
.page-faq .faq-index-list a:focus-visible {
  color: var(--ice);
  background: rgba(53, 224, 208, .08);
  border-left-color: var(--cyan);
}

.page-faq .faq-index-num {
  font-family: var(--font-mono);
  font-size: .6875rem;
  font-weight: 700;
  color: var(--steel);
}

.page-faq .faq-index-list a:hover .faq-index-num {
  color: var(--cyan);
}

/* ---------- 问答区块 ---------- */
.page-faq .faq-body {
  min-width: 0;
}

.page-faq .faq-sec {
  counter-reset: faq;
  padding-block: clamp(1.6rem, 4vw, 2.6rem);
  border-top: 1px solid var(--line);
  scroll-margin-top: calc(var(--topbar-h) + 1rem);
}

.page-faq .faq-sec:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-faq .faq-sec-head {
  display: grid;
  gap: .45rem;
  margin-bottom: 1.15rem;
}

.page-faq .faq-sec-num {
  font-size: .8125rem;
  font-weight: 700;
  letter-spacing: .14em;
  color: var(--cyan);
}

.page-faq .faq-sec .sec-title {
  margin: 0;
  font-size: clamp(1.3rem, 3.4vw, 1.85rem);
  line-height: 1.2;
  color: var(--ice);
}

.page-faq .faq-sec-note {
  margin: 0;
  max-width: 48ch;
  font-size: .9375rem;
  color: var(--steel);
}

.page-faq .faq-figure {
  margin: 0 0 1.35rem;
  background: var(--faq-panel-solid);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, calc(100% - 22px) 0, 100% 22px, 100% 100%, 0 100%);
  overflow: hidden;
}

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

.page-faq .faq-figure figcaption {
  padding: .6rem .9rem .7rem;
  font-size: .8125rem;
  line-height: 1.6;
  color: var(--steel);
  border-top: 1px solid var(--line);
}

.page-faq .faq-list {
  display: grid;
}

.page-faq .faq-item {
  border-bottom: 1px solid var(--faq-line-soft);
  border-left: 2px solid transparent;
  background: linear-gradient(90deg, rgba(13, 35, 64, .5), rgba(13, 35, 64, 0) 88%);
  transition: background .2s var(--ease), border-color .2s var(--ease);
}

.page-faq .faq-item:hover {
  background: linear-gradient(90deg, rgba(13, 35, 64, .82), rgba(13, 35, 64, 0) 88%);
}

.page-faq .faq-item[open] {
  border-left-color: var(--cyan);
  background: linear-gradient(90deg, rgba(53, 224, 208, .08), rgba(13, 35, 64, .1) 88%);
}

.page-faq .faq-item summary {
  display: flex;
  align-items: flex-start;
  gap: .7rem;
  padding: .9rem .7rem .9rem .55rem;
  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::before {
  counter-increment: faq;
  content: "Q" counter(faq, decimal-leading-zero);
  flex: none;
  padding-top: .22rem;
  font-family: var(--font-mono);
  font-size: .6875rem;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--steel);
}

.page-faq .faq-item[open] summary::before {
  color: var(--cyan);
}

.page-faq .faq-q {
  flex: 1;
  min-width: 0;
  font-size: .9688rem;
  font-weight: 600;
  line-height: 1.55;
  color: var(--silver);
}

.page-faq .faq-item[open] .faq-q,
.page-faq .faq-item summary:hover .faq-q {
  color: var(--ice);
}

.page-faq .faq-ind {
  flex: none;
  position: relative;
  width: 14px;
  height: 14px;
  margin-top: .35rem;
}

.page-faq .faq-ind::before,
.page-faq .faq-ind::after {
  content: "";
  position: absolute;
  background: var(--cyan);
  transition: transform .22s var(--ease), opacity .22s var(--ease);
}

.page-faq .faq-ind::before {
  left: 0;
  top: 6px;
  width: 14px;
  height: 2px;
}

.page-faq .faq-ind::after {
  left: 6px;
  top: 0;
  width: 2px;
  height: 14px;
}

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

.page-faq .faq-answer {
  padding: 0 .7rem 1rem 2.2rem;
  font-size: .9375rem;
  line-height: 1.8;
  color: var(--text);
}

.page-faq .faq-answer p {
  margin: 0 0 .55rem;
}

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

.page-faq .faq-answer a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 224, 208, .4);
}

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

.page-faq .faq-mail {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .6rem;
  margin-top: .75rem;
  padding: .7rem .8rem;
  background: rgba(2, 8, 18, .5);
  border: 1px solid var(--line-strong);
  border-left: 2px solid var(--orange);
}

.page-faq .faq-mail-value {
  font-family: var(--font-mono);
  font-size: .8125rem;
  color: var(--ice);
  word-break: break-all;
}

/* ---------- 下一步 ---------- */
.page-faq .faq-next {
  padding-block: clamp(2rem, 5vw, 3.25rem);
  border-top: 1px solid var(--line);
  background:
    linear-gradient(160deg, rgba(13, 35, 64, .7), rgba(2, 8, 18, .9)),
    repeating-linear-gradient(135deg, rgba(107, 135, 168, .06) 0 2px, transparent 2px 14px);
}

.page-faq .faq-next-title {
  margin: 0 0 1.2rem;
  font-size: clamp(1.2rem, 3.2vw, 1.6rem);
  color: var(--ice);
}

.page-faq .faq-next-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: .6rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .faq-next-list a {
  display: grid;
  grid-template-columns: 1fr;
  gap: .25rem;
  height: 100%;
  padding: .85rem .95rem;
  text-decoration: none;
  background: rgba(7, 20, 38, .75);
  border: 1px solid var(--line);
  border-top: 2px solid var(--steel);
  transition: border-color .2s var(--ease), background .2s var(--ease), transform .2s var(--ease);
}

.page-faq .faq-next-list a:hover,
.page-faq .faq-next-list a:focus-visible {
  border-top-color: var(--cyan);
  background: rgba(13, 35, 64, .95);
  transform: translateY(-2px);
}

.page-faq .faq-next-k {
  font-size: .9375rem;
  font-weight: 700;
  color: var(--ice);
}

.page-faq .faq-next-v {
  font-size: .8125rem;
  line-height: 1.6;
  color: var(--steel);
}

/* ---------- 响应式 ---------- */
@media (max-width: 620px) {
  .page-faq .faq-qmark {
    right: -18%;
    bottom: -14%;
    opacity: .7;
  }

  .page-faq .faq-hero-media img {
    object-position: 62% 50%;
  }

  .page-faq .faq-title {
    max-width: none;
  }

  .page-faq .faq-answer {
    padding-left: .55rem;
  }

  .page-faq .faq-item summary {
    padding-right: .35rem;
  }
}

@media (min-width: 700px) {
  .page-faq .faq-next-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 960px) {
  .page-faq .faq-layout {
    grid-template-columns: 234px minmax(0, 1fr);
    gap: clamp(2rem, 4vw, 3.5rem);
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--topbar-h) + 1.25rem);
  }

  .page-faq .faq-next-list {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .page-faq .faq-q {
    font-size: 1rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-jump a,
  .page-faq .faq-item,
  .page-faq .faq-ind::before,
  .page-faq .faq-ind::after,
  .page-faq .faq-next-list a,
  .page-faq .faq-index-list a {
    transition: none;
  }

  .page-faq .faq-jump a:hover,
  .page-faq .faq-next-list a:hover {
    transform: none;
  }
}
<<<END>>>