.page-faq {
  --faq-line: rgba(69, 230, 230, .2);
  --faq-card-bg: rgba(16, 30, 60, .74);
  --faq-card-open: rgba(28, 55, 102, .62);
  background: var(--nx-deep);
  color: var(--nx-signal);
  font-family: var(--nx-font-body);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(1.5rem, 4.5vw, 3.25rem) 0 clamp(1.5rem, 3.5vw, 2.5rem);
  border-bottom: 1px solid var(--nx-line-soft);
  background-color: var(--nx-deep);
  background-image:
    linear-gradient(to right, rgba(69, 230, 230, .07) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(69, 230, 230, .07) 1px, transparent 1px);
  background-size: 46px 46px;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--nx-lava) 0 18%, var(--nx-cyan) 18% 30%, transparent 30%);
}

.page-faq .faq-hero h1 {
  margin: .7rem 0 0;
  font-family: var(--nx-font-display);
  font-size: clamp(1.85rem, 5.4vw, 3.3rem);
  font-weight: 900;
  font-style: italic;
  letter-spacing: -.015em;
  line-height: 1.14;
  color: var(--nx-signal);
  max-width: 22ch;
}

.page-faq .faq-hero__lead {
  margin: 1rem 0 0;
  max-width: 62ch;
  font-size: clamp(.94rem, 1.6vw, 1.05rem);
  line-height: 1.8;
  color: var(--nx-mist);
}

.page-faq .faq-jump {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  margin: 1.4rem 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-jump a {
  display: inline-block;
  padding: .42rem .78rem;
  border: 1px solid var(--nx-line-soft);
  background: rgba(8, 16, 34, .6);
  color: var(--nx-signal);
  font-size: .82rem;
  letter-spacing: .03em;
  text-decoration: none;
  transition: border-color .25s var(--nx-ease), color .25s var(--nx-ease), background .25s var(--nx-ease);
}

.page-faq .faq-jump a:hover,
.page-faq .faq-jump a:focus-visible {
  border-color: var(--nx-cyan);
  color: var(--nx-cyan);
  background: rgba(69, 230, 230, .1);
}

/* ---------- 浏览器提示条 ---------- */
.page-faq .faq-notice {
  background: var(--nx-warn);
  color: var(--nx-ink);
  border-bottom: 1px solid rgba(4, 9, 18, .4);
}

.page-faq .faq-notice__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .45rem .9rem;
  padding: .7rem 0;
}

.page-faq .faq-notice__tag {
  flex: none;
  padding: .18rem .5rem;
  background: var(--nx-ink);
  color: var(--nx-warn);
  font-family: var(--nx-font-display);
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .14em;
}

.page-faq .faq-notice__inner p {
  margin: 0;
  font-size: .86rem;
  line-height: 1.6;
  font-weight: 500;
}

/* ---------- 主体布局 ---------- */
.page-faq .faq-body {
  display: grid;
  gap: var(--nx-gap);
  padding-top: clamp(1.5rem, 4vw, 2.75rem);
  padding-bottom: clamp(2.5rem, 6vw, 4.5rem);
}

.page-faq .faq-toc {
  border: 1px solid var(--nx-line-soft);
  background: rgba(8, 16, 34, .72);
  padding: .85rem .9rem 1rem;
}

.page-faq .faq-toc__list {
  display: flex;
  gap: .5rem;
  margin: .75rem 0 0;
  padding: 0 0 .35rem;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-faq .faq-toc__list a {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  padding: .5rem .6rem;
  border-bottom: 2px solid transparent;
  color: var(--nx-mist);
  font-size: .85rem;
  line-height: 1.4;
  text-decoration: none;
  white-space: nowrap;
  transition: color .25s var(--nx-ease), border-color .25s var(--nx-ease), background .25s var(--nx-ease);
}

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

.page-faq .faq-toc__list a[aria-current="location"] {
  color: var(--nx-signal);
  border-bottom-color: var(--nx-lava);
  background: rgba(28, 55, 102, .55);
}

.page-faq .faq-toc__num {
  font-family: var(--nx-font-num);
  font-size: .78rem;
  letter-spacing: .06em;
  color: var(--nx-cyan);
}

/* ---------- 问答分组 ---------- */
.page-faq .faq-group + .faq-group {
  margin-top: clamp(1.85rem, 4.5vw, 3rem);
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: baseline;
  gap: .35rem .8rem;
  margin-bottom: 1rem;
  padding-bottom: .7rem;
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .faq-group__num {
  grid-row: span 2;
  align-self: start;
  font-family: var(--nx-font-num);
  font-size: clamp(1.5rem, 3.4vw, 2.1rem);
  font-weight: 700;
  line-height: 1;
  color: var(--nx-lava);
  letter-spacing: -.02em;
}

.page-faq .faq-group__head h2 {
  margin: 0;
  font-family: var(--nx-font-display);
  font-size: clamp(1.2rem, 2.8vw, 1.65rem);
  font-weight: 800;
  letter-spacing: .01em;
  color: var(--nx-signal);
}

.page-faq .faq-group__note {
  grid-column: 2;
  margin: 0;
  font-size: .86rem;
  color: var(--nx-mist);
  line-height: 1.6;
}

.page-faq .faq-group__link {
  margin: 1rem 0 0;
  font-size: .87rem;
  color: var(--nx-mist);
}

.page-faq .faq-group__link a {
  color: var(--nx-cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 资料卡手风琴 ---------- */
.page-faq .faq-card {
  border: 1px solid var(--nx-line-soft);
  background: var(--faq-card-bg);
  transition: border-color .3s var(--nx-ease), background .3s var(--nx-ease), box-shadow .3s var(--nx-ease);
}

.page-faq .faq-card + .faq-card {
  margin-top: .625rem;
}

.page-faq .faq-card > summary {
  display: grid;
  grid-template-columns: 2.1rem 1fr 1.15rem;
  align-items: center;
  gap: .6rem;
  padding: clamp(.8rem, 2vw, 1.05rem) clamp(.8rem, 2.2vw, 1.2rem);
  cursor: pointer;
  list-style: none;
  color: var(--nx-signal);
}

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

.page-faq .faq-card > summary:hover .faq-card__q,
.page-faq .faq-card > summary:focus-visible .faq-card__q {
  color: var(--nx-cyan);
}

.page-faq .faq-card__num {
  font-family: var(--nx-font-num);
  font-size: .82rem;
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--nx-lava);
  padding: .12rem .3rem;
  border: 1px solid rgba(255, 92, 36, .45);
  text-align: center;
}

.page-faq .faq-card__q {
  font-size: clamp(.92rem, 1.7vw, 1rem);
  font-weight: 600;
  line-height: 1.55;
  transition: color .25s var(--nx-ease);
}

.page-faq .faq-card__icon {
  position: relative;
  width: 1.15rem;
  height: 1.15rem;
  justify-self: end;
}

.page-faq .faq-card__icon::before,
.page-faq .faq-card__icon::after {
  content: "";
  position: absolute;
  background: var(--nx-cyan);
  transition: transform .3s var(--nx-ease);
}

.page-faq .faq-card__icon::before {
  left: 0;
  top: 50%;
  width: 100%;
  height: 2px;
  transform: translateY(-50%);
}

.page-faq .faq-card__icon::after {
  top: 0;
  left: 50%;
  width: 2px;
  height: 100%;
  transform: translateX(-50%);
}

.page-faq .faq-card[open] .faq-card__icon::after {
  transform: translateX(-50%) scaleY(0);
}

.page-faq .faq-card[open] {
  border-color: rgba(69, 230, 230, .48);
  background: var(--faq-card-open);
  box-shadow: inset 3px 0 0 var(--nx-lava);
}

.page-faq .faq-card__body {
  padding: 0 clamp(.8rem, 2.2vw, 1.2rem) 1.15rem;
  border-top: 1px dashed var(--faq-line);
  color: var(--nx-mist);
  font-size: .93rem;
  line-height: 1.8;
}

.page-faq .faq-card__body > p {
  margin: .9rem 0 0;
}

.page-faq .faq-card__body > p + p {
  margin-top: .6rem;
}

/* ---------- 步骤编号 ---------- */
.page-faq .faq-steps {
  counter-reset: faqstep;
  display: grid;
  gap: .5rem;
  margin: .9rem 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-steps li {
  counter-increment: faqstep;
  display: grid;
  grid-template-columns: 1.55rem 1fr;
  gap: .6rem;
  align-items: start;
  font-size: .9rem;
  line-height: 1.7;
}

.page-faq .faq-steps li::before {
  content: counter(faqstep);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.55rem;
  height: 1.55rem;
  margin-top: .1rem;
  background: var(--nx-cyan);
  color: var(--nx-ink);
  font-family: var(--nx-font-num);
  font-size: .82rem;
  font-weight: 700;
}

/* ---------- 图片与图形 ---------- */
.page-faq .faq-media {
  margin: 1.4rem 0 0;
}

.page-faq .faq-media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--nx-line-soft);
  background: var(--nx-night);
}

.page-faq .faq-media figcaption {
  margin-top: .6rem;
  font-size: .8rem;
  line-height: 1.65;
  color: var(--nx-mist);
  border-left: 2px solid var(--nx-lava);
  padding-left: .6rem;
}

.page-faq .faq-visual {
  margin-top: 1.25rem;
  padding: clamp(.6rem, 2vw, 1.1rem);
  background: var(--nx-ink);
  border: 1px solid var(--nx-line);
}

.page-faq .faq-visual svg {
  display: block;
  width: 100%;
  height: auto;
}

/* ---------- 联系准备面板 ---------- */
.page-faq .faq-ready {
  display: grid;
  gap: clamp(1.1rem, 3vw, 2rem);
  margin-top: .25rem;
}

.page-faq .faq-ready h3 {
  margin: 0 0 .7rem;
  font-family: var(--nx-font-display);
  font-size: 1.05rem;
  font-weight: 800;
  letter-spacing: .04em;
  color: var(--nx-cyan);
}

.page-faq .faq-checklist {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: .55rem;
}

.page-faq .faq-checklist li {
  position: relative;
  padding-left: 1.6rem;
  font-size: .9rem;
  line-height: 1.65;
  color: var(--nx-signal);
}

.page-faq .faq-checklist li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .42rem;
  width: .72rem;
  height: .38rem;
  border-left: 2px solid var(--nx-lava);
  border-bottom: 2px solid var(--nx-lava);
  transform: rotate(-45deg);
}

.page-faq .faq-ready__k {
  margin: .55rem 0 .1rem;
  font-size: .74rem;
  letter-spacing: .14em;
  color: var(--nx-mist);
}

.page-faq .faq-ready__v {
  margin: 0;
  font-family: var(--nx-font-num);
  font-size: clamp(1rem, 2.6vw, 1.2rem);
  font-weight: 700;
  color: var(--nx-signal);
  word-break: break-word;
}

.page-faq .faq-ready__hint {
  margin: .9rem 0 1.1rem;
  font-size: .82rem;
  line-height: 1.7;
  color: var(--nx-mist);
}

.page-faq .faq-ready__col--contact {
  border-top: 1px dashed var(--faq-line);
  padding-top: 1rem;
}

/* ---------- 平板与桌面 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-ready {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  }

  .page-faq .faq-ready__col--contact {
    border-top: 0;
    border-left: 1px dashed var(--faq-line);
    padding-top: 0;
    padding-left: clamp(1rem, 2.6vw, 1.8rem);
  }

  .page-faq .faq-media--narrow {
    max-width: 640px;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-body {
    grid-template-columns: 248px minmax(0, 1fr);
    gap: clamp(1.75rem, 3.5vw, 3.25rem);
  }

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

  .page-faq .faq-toc__list {
    flex-direction: column;
    overflow: visible;
    gap: .15rem;
  }

  .page-faq .faq-toc__list a {
    display: grid;
    grid-template-columns: 2.1rem 1fr;
    white-space: normal;
    border-bottom: 0;
    border-left: 2px solid transparent;
    padding: .5rem .6rem;
  }

  .page-faq .faq-toc__list a[aria-current="location"] {
    border-left-color: var(--nx-lava);
    border-bottom-color: transparent;
  }

  .page-faq .faq-card__q {
    font-size: 1rem;
  }
}
<<<END>>>