.page-faq {
  --faq-line: rgba(147, 169, 190, 0.24);
  --faq-line-live: rgba(47, 224, 200, 0.5);
  --faq-panel: rgba(12, 44, 70, 0.52);
  --faq-panel-soft: rgba(10, 22, 34, 0.55);
  --faq-gap: clamp(18px, 2.4vw, 34px);
  padding-block: clamp(24px, 4vw, 52px) clamp(52px, 8vw, 104px);
}

.page-faq .breadcrumb {
  margin-bottom: clamp(18px, 3vw, 30px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  display: grid;
  gap: var(--faq-gap);
  padding-bottom: clamp(26px, 4vw, 48px);
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .faq-hero h1 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-size: clamp(30px, 6.4vw, 56px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-faq .faq-hero__lede {
  margin: 16px 0 0;
  max-width: 58ch;
  font-size: 16px;
  line-height: 1.78;
  color: var(--mist);
}

.page-faq .faq-hero__jump {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.page-faq .faq-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
  font-size: 13px;
  color: var(--mist);
}

.page-faq .faq-hero__meta .num {
  margin-right: 6px;
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 700;
  color: var(--cyan);
}

.page-faq .faq-hero__fig {
  margin: 0;
}

.page-faq .faq-hero__fig .media-frame {
  border: 1px solid var(--faq-line);
  background: var(--faq-panel);
}

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

/* ---------- 主体：索引 + 分组 ---------- */
.page-faq .faq-body {
  display: grid;
  gap: clamp(26px, 3.4vw, 46px);
  margin-top: clamp(28px, 4.4vw, 56px);
}

.page-faq .faq-index__list {
  display: flex;
  gap: 8px;
  margin: 14px 0 0;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-index__list li {
  flex: 0 0 auto;
}

.page-faq .faq-index__list a {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  white-space: nowrap;
  font-size: 14px;
  text-decoration: none;
  color: var(--paper);
  background: var(--faq-panel);
  border: 1px solid var(--faq-line);
  border-bottom-width: 3px;
  transition: border-color var(--t-fast) var(--ease),
    background var(--t-fast) var(--ease), transform var(--t-fast) var(--ease);
}

.page-faq .faq-index__list .num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--mist);
}

.page-faq .faq-index__list li:nth-child(1) a { border-bottom-color: var(--signal); }
.page-faq .faq-index__list li:nth-child(2) a { border-bottom-color: var(--cyan); }
.page-faq .faq-index__list li:nth-child(3) a { border-bottom-color: var(--amber); }
.page-faq .faq-index__list li:nth-child(4) a { border-bottom-color: var(--green); }
.page-faq .faq-index__list li:nth-child(5) a { border-bottom-color: var(--red); }

.page-faq .faq-index__list a:hover,
.page-faq .faq-index__list a:focus-visible {
  background: rgba(12, 44, 70, 0.9);
  transform: translateY(-2px);
}

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  padding: clamp(18px, 2.4vw, 30px);
  background: var(--faq-panel);
  border: 1px solid var(--faq-line);
  border-radius: 2px;
  scroll-margin-top: 96px;
  transition: border-color var(--t-fast) var(--ease),
    box-shadow var(--t-fast) var(--ease);
}

.page-faq .faq-group + .faq-group {
  margin-top: clamp(16px, 2.2vw, 28px);
}

.page-faq .faq-group:target {
  border-color: var(--faq-line-live);
  box-shadow: var(--shadow-lift);
}

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  flex-wrap: wrap;
}

.page-faq .faq-group__num {
  font-family: var(--font-mono);
  font-size: clamp(26px, 4.4vw, 40px);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--signal);
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(19px, 2.6vw, 26px);
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .faq-group__note {
  margin: 10px 0 0;
  font-size: 13px;
  color: var(--mist);
}

/* ---------- 折叠问答 ---------- */
.page-faq .qa {
  border-top: 1px solid var(--faq-line);
  transition: background var(--t-fast) var(--ease);
}

.page-faq .qa:first-of-type {
  margin-top: 20px;
}

.page-faq .qa__q {
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr) 20px;
  align-items: start;
  gap: 10px;
  padding: 15px 2px;
  cursor: pointer;
  list-style: none;
  font-size: 15px;
  line-height: 1.65;
  color: var(--paper);
}

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

.page-faq .qa__idx {
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--mist);
}

.page-faq .qa__mark {
  width: 9px;
  height: 9px;
  margin-top: 8px;
  border-right: 2px solid var(--mist);
  border-bottom: 2px solid var(--mist);
  transform: rotate(45deg);
  transition: transform 180ms var(--ease), border-color 180ms var(--ease);
}

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

.page-faq .qa[open] {
  background: var(--faq-panel-soft);
}

.page-faq .qa[open] .qa__mark {
  transform: rotate(225deg);
  border-color: var(--signal);
}

.page-faq .qa__a {
  padding: 0 16px 18px 48px;
}

.page-faq .qa__a p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--mist);
}

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

.page-faq .qa__a a:hover {
  color: var(--signal);
}

.page-faq .qa__a .num {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--paper);
}

/* ---------- 流程图 ---------- */
.page-faq .faq-flow-wrap {
  margin: 26px 0 0;
  padding: 16px 12px 12px;
  background: rgba(10, 22, 34, 0.45);
  border: 1px solid var(--faq-line);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-flow {
  display: block;
  width: 100%;
  min-width: 620px;
  height: auto;
}

.page-faq .faq-flow text {
  font-family: var(--font-body);
}

.page-faq .faq-flow__num {
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 700;
  fill: var(--signal);
}

.page-faq .faq-flow__t {
  font-size: 17px;
  font-weight: 700;
  fill: var(--paper);
}

.page-faq .faq-flow__d {
  font-size: 12.5px;
  fill: var(--mist);
}

.page-faq .faq-flow__cap {
  margin: 14px 4px 0;
  font-size: 13px;
  color: var(--mist);
}

.page-faq .faq-flow__cap .num {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--amber);
}

/* ---------- 组内配图 ---------- */
.page-faq .faq-fig {
  margin: 26px 0 0;
}

.page-faq .faq-fig .media-frame {
  border: 1px solid var(--faq-line);
  background: var(--faq-panel);
}

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

/* ---------- 联系渠道 ---------- */
.page-faq .faq-contact {
  margin-top: 26px;
  padding: clamp(16px, 2.2vw, 24px);
  background: rgba(10, 22, 34, 0.62);
  border: 1px solid var(--faq-line);
  border-left: 3px solid var(--signal);
}

.page-faq .faq-contact__list {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-contact__list .contact-item {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 4px 14px;
  padding-bottom: 12px;
  border-bottom: 1px dashed var(--faq-line);
}

.page-faq .faq-contact__list .contact-key {
  grid-column: 1 / -1;
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-faq .faq-contact__list .contact-val {
  font-size: 15px;
  color: var(--paper);
  word-break: break-all;
}

.page-faq .faq-contact__list .contact-val.num {
  font-family: var(--font-mono);
  font-weight: 700;
  letter-spacing: 0.02em;
}

.page-faq .faq-contact__list .copy-btn {
  padding: 7px 14px;
  font-size: 13px;
  color: var(--ink-900);
  background: var(--cyan);
  border: 1px solid var(--cyan);
  border-radius: 2px;
  cursor: pointer;
  transition: background var(--t-fast) var(--ease),
    border-color var(--t-fast) var(--ease), transform var(--t-fast) var(--ease);
}

.page-faq .faq-contact__list .copy-btn:hover,
.page-faq .faq-contact__list .copy-btn:focus-visible {
  background: var(--signal);
  border-color: var(--signal);
  color: var(--paper);
  transform: translateY(-2px);
}

.page-faq .faq-contact .contact-note {
  margin: 18px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
}

.page-faq .faq-contact .btn {
  margin-top: 20px;
}

/* ---------- 断点 ---------- */
@media (min-width: 900px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    align-items: start;
  }

  .page-faq .faq-hero__fig {
    margin-top: 14px;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-body {
    grid-template-columns: 246px minmax(0, 1fr);
  }

  .page-faq .faq-index {
    position: sticky;
    top: 104px;
    align-self: start;
  }

  .page-faq .faq-index__list {
    display: grid;
    gap: 4px;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-index__list li {
    flex: none;
  }

  .page-faq .faq-index__list a {
    grid-template-columns: 34px minmax(0, 1fr);
    white-space: normal;
    padding: 12px 14px;
    border-width: 0 0 0 3px;
    background: linear-gradient(90deg, rgba(12, 44, 70, 0.72), rgba(12, 44, 70, 0.06));
  }

  .page-faq .faq-index__list a:hover,
  .page-faq .faq-index__list a:focus-visible {
    background: linear-gradient(90deg, rgba(12, 44, 70, 0.98), rgba(12, 44, 70, 0.2));
  }

  .page-faq .qa__q {
    font-size: 15.5px;
  }

  .page-faq .qa__a p {
    font-size: 15px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-index__list a,
  .page-faq .qa,
  .page-faq .qa__mark,
  .page-faq .faq-contact__list .copy-btn,
  .page-faq .faq-group {
    transition: none;
  }

  .page-faq .faq-index__list a:hover,
  .page-faq .faq-contact__list .copy-btn:hover {
    transform: none;
  }
}
<<<END>>>