.page-faq {
  --faq-surface: rgba(10, 58, 49, .55);
  --faq-surface-strong: rgba(14, 74, 62, .72);
  --faq-line: rgba(59, 242, 199, .16);
  display: block;
  background:
    radial-gradient(1180px 500px at 84% -10%, rgba(59, 242, 199, .10), transparent 62%),
    radial-gradient(880px 440px at 4% 24%, rgba(242, 176, 59, .06), transparent 60%);
}

/* 面包屑 */
.page-faq .breadcrumb {
  display: flex;
  align-items: center;
  gap: .5rem;
  padding: 1.5rem 0 .4rem;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .06em;
  color: var(--grey);
}

.page-faq .breadcrumb a {
  color: var(--grey);
  text-decoration: none;
  transition: color .2s var(--ease);
}

.page-faq .breadcrumb a:hover,
.page-faq .breadcrumb a:focus-visible {
  color: var(--neon);
  outline: none;
}

/* 首屏 */
.page-faq .faq-hero {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.7rem;
  padding-block: .6rem 2.6rem;
}

.page-faq .faq-hero h1 {
  margin: .85rem 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.85rem, 7.2vw, 3.3rem);
  line-height: 1.1;
  letter-spacing: .004em;
  color: var(--white);
}

.page-faq .faq-hero__lede {
  margin: 1rem 0 0;
  max-width: 36em;
  font-size: .97rem;
  line-height: 1.78;
  color: var(--mist);
}

.page-faq .faq-hero__panel {
  position: relative;
  overflow: hidden;
  padding: 1.3rem 1.2rem 1.4rem 1.45rem;
  border: 1px solid var(--faq-line);
  border-radius: var(--r-lg);
  background: linear-gradient(165deg, var(--faq-surface-strong), rgba(6, 42, 36, .92));
}

.page-faq .faq-hero__panel::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
  background: linear-gradient(180deg, var(--neon), rgba(59, 242, 199, 0) 78%);
}

.page-faq .faq-hero__panel-label {
  margin: 0 0 1rem;
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .16em;
  color: var(--amber);
}

.page-faq .faq-hero__panel ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .9rem;
}

.page-faq .faq-hero__panel li {
  display: grid;
  grid-template-columns: 3.1rem minmax(0, 1fr);
  align-items: baseline;
  gap: .7rem;
  font-size: .88rem;
  line-height: 1.6;
  color: var(--mist);
}

.page-faq .faq-hero__panel .num {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -.02em;
  color: var(--neon);
}

@media (min-width: 900px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    align-items: end;
    gap: 3rem;
    padding-block: 1rem 3.4rem;
  }

  .page-faq .faq-hero__panel {
    padding: 1.5rem 1.4rem 1.6rem 1.7rem;
  }
}

/* 索引 + 正文 */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.8rem;
  padding-bottom: 4rem;
}

.page-faq .faq-index {
  display: flex;
  gap: .45rem;
  overflow-x: auto;
  padding: .2rem .1rem .6rem;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.page-faq .faq-index::-webkit-scrollbar {
  display: none;
}

.page-faq .faq-index a {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  padding: .5rem .85rem;
  border: 1px solid var(--faq-line);
  border-radius: var(--r-pill);
  background: var(--faq-surface);
  color: var(--mist);
  font-size: .8rem;
  text-decoration: none;
  white-space: nowrap;
  transition: border-color .2s var(--ease), color .2s var(--ease), background .2s var(--ease);
}

.page-faq .faq-index a span {
  font-family: var(--font-mono);
  font-size: .68rem;
  color: var(--grey);
}

.page-faq .faq-index a:hover,
.page-faq .faq-index a:focus-visible {
  border-color: var(--neon);
  color: var(--white);
  outline: none;
}

@media (min-width: 1000px) {
  .page-faq .faq-layout {
    grid-template-columns: 208px minmax(0, 1fr);
    gap: 3.4rem;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 1.6rem;
    align-self: start;
    flex-direction: column;
    gap: .35rem;
    overflow: visible;
    padding: 0;
  }

  .page-faq .faq-index a {
    width: 100%;
    justify-content: flex-start;
    border-radius: var(--r-md);
    background: transparent;
    padding: .6rem .8rem;
  }
}

/* 章节 */
.page-faq .faq-sec {
  padding-bottom: 2.8rem;
  scroll-margin-top: 1.5rem;
}

.page-faq .faq-sec:last-child {
  padding-bottom: 0;
}

.page-faq .faq-sec__head {
  display: flex;
  align-items: baseline;
  gap: .8rem;
  padding-top: 1.1rem;
  border-top: 1px solid var(--faq-line);
}

.page-faq .faq-sec__no {
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .1em;
  color: var(--neon);
}

.page-faq .faq-sec__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.28rem, 4.2vw, 1.72rem);
  letter-spacing: .01em;
  color: var(--white);
}

.page-faq .faq-sec__note {
  margin: .85rem 0 1.5rem;
  max-width: 40em;
  font-size: .88rem;
  line-height: 1.75;
  color: var(--grey);
}

/* 两步步骤 + 手机示意图 */
.page-faq .faq-device {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.6rem;
  margin-bottom: 1.8rem;
}

.page-faq .faq-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .8rem;
  counter-reset: step;
}

.page-faq .faq-steps li {
  position: relative;
  padding: 1rem 1.1rem 1rem 3.5rem;
  border: 1px solid var(--faq-line);
  border-radius: var(--r-md);
  background: var(--faq-surface);
}

.page-faq .faq-steps li::before {
  counter-increment: step;
  content: "0" counter(step);
  position: absolute;
  left: 1.1rem;
  top: 1.02rem;
  font-family: var(--font-mono);
  font-size: .82rem;
  font-weight: 700;
  color: var(--amber);
}

.page-faq .faq-steps strong {
  display: block;
  margin-bottom: .28rem;
  font-size: 1rem;
  font-weight: 600;
  color: var(--white);
}

.page-faq .faq-steps p {
  margin: 0;
  font-size: .87rem;
  line-height: 1.68;
  color: var(--grey);
}

.page-faq .faq-device__shot {
  margin: 0 auto;
  width: 100%;
  max-width: 330px;
}

.page-faq .faq-device__shot img,
.page-faq .faq-shot img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--r-md);
  object-fit: cover;
}

.page-faq .faq-shot {
  margin: 0 0 1.6rem;
}

.page-faq .media__caption {
  margin-top: .7rem;
  font-size: .78rem;
  line-height: 1.62;
  color: var(--grey);
}

@media (min-width: 860px) {
  .page-faq .faq-device {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
    align-items: center;
    gap: 2.2rem;
  }
}

/* 可展开问答 */
.page-faq .qa {
  margin-bottom: .62rem;
  border: 1px solid var(--faq-line);
  border-radius: var(--r-md);
  background: rgba(10, 58, 49, .42);
  overflow: hidden;
  transition: border-color .2s var(--ease), background .2s var(--ease);
}

.page-faq .qa[open] {
  border-color: rgba(59, 242, 199, .42);
  background: var(--faq-surface-strong);
}

.page-faq .qa__q {
  position: relative;
  display: flex;
  align-items: baseline;
  gap: .75rem;
  padding: 1rem 2.7rem 1rem 1.05rem;
  list-style: none;
  cursor: pointer;
  font-size: .97rem;
  line-height: 1.55;
  color: var(--mist);
  transition: color .2s var(--ease);
}

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

.page-faq .qa__q::after {
  content: "";
  position: absolute;
  right: 1.05rem;
  top: 50%;
  width: 12px;
  height: 12px;
  margin-top: -6px;
  background:
    linear-gradient(var(--neon), var(--neon)) center / 12px 1.5px no-repeat,
    linear-gradient(var(--neon), var(--neon)) center / 1.5px 12px no-repeat;
  transition: transform .2s var(--ease);
}

.page-faq .qa[open] .qa__q::after {
  background:
    linear-gradient(var(--neon), var(--neon)) center / 12px 1.5px no-repeat,
    linear-gradient(var(--neon), var(--neon)) center / 12px 1.5px no-repeat;
  transform: rotate(180deg);
}

.page-faq .qa__q:hover {
  color: var(--white);
}

.page-faq .qa__q:focus-visible {
  outline: 1px dashed rgba(59, 242, 199, .55);
  outline-offset: -4px;
}

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

.page-faq .qa[open] .qa__no {
  color: var(--amber);
}

.page-faq .qa__a {
  margin: 0 1.05rem 1.15rem;
  padding-top: .95rem;
  border-top: 1px dashed var(--hairline-soft);
  font-size: .9rem;
  line-height: 1.78;
  color: var(--mist);
}

.page-faq .qa__a p {
  margin: 0;
}

.page-faq .qa__a a {
  color: var(--neon);
  text-decoration: none;
  border-bottom: 1px solid rgba(59, 242, 199, .38);
}

.page-faq .qa__a a:hover,
.page-faq .qa__a a:focus-visible {
  color: var(--neon-soft);
  outline: none;
}

/* 反馈与联系 */
.page-faq .faq-support {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.3rem;
  padding: 1.4rem 1.2rem;
  border: 1px solid var(--faq-line);
  border-radius: var(--r-lg);
  background: linear-gradient(150deg, var(--faq-surface-strong), rgba(6, 42, 36, .92));
}

.page-faq .faq-support h3 {
  margin: 0 0 .6rem;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.14rem;
  color: var(--white);
}

.page-faq .faq-support p {
  margin: 0 0 .9rem;
  font-size: .91rem;
  line-height: 1.78;
  color: var(--mist);
}

.page-faq .faq-support .mono {
  font-family: var(--font-mono);
  font-size: .9rem;
  color: var(--neon);
  word-break: break-all;
}

.page-faq .faq-support ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .45rem;
}

.page-faq .faq-support li {
  position: relative;
  padding-left: 1.05rem;
  font-size: .85rem;
  line-height: 1.65;
  color: var(--grey);
}

.page-faq .faq-support li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .66em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--neon);
}

.page-faq .faq-support__actions {
  display: flex;
  flex-wrap: wrap;
  gap: .6rem;
  align-content: start;
}

@media (min-width: 820px) {
  .page-faq .faq-support {
    grid-template-columns: minmax(0, 1.45fr) minmax(0, .9fr);
    align-items: center;
    gap: 2.4rem;
    padding: 1.8rem 1.8rem;
  }

  .page-faq .faq-support__actions {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa,
  .page-faq .qa__q,
  .page-faq .qa__q::after,
  .page-faq .faq-index a {
    transition: none;
  }
}
<<<PAGE_CSS_END>>>