.page-faq {
  --faq-answer-ink: rgba(18, 16, 12, .8);
  --faq-item-pad: 20px 22px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding-bottom: 72px;
}

.page-faq .faq-hero .crumbs {
  margin: 0 0 28px;
}

.page-faq .faq-hero .crumbs-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 13px;
  line-height: 1.6;
}

.page-faq .faq-hero .crumbs-list li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--silver-400);
}

.page-faq .faq-hero .crumbs-list a {
  color: var(--volt-200);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color .18s ease;
}

.page-faq .faq-hero .crumbs-list a:hover,
.page-faq .faq-hero .crumbs-list a:focus-visible {
  border-bottom-color: var(--volt-200);
}

.page-faq .faq-hero .crumbs-list li[aria-current] {
  color: var(--silver-400);
}

.page-faq .faq-hero-grid {
  align-items: center;
  row-gap: 48px;
}

.page-faq .faq-hero h1 {
  margin: 0 0 20px;
  font-family: var(--serif);
  font-weight: 800;
  font-size: clamp(30px, 7.2vw, 52px);
  line-height: 1.2;
  letter-spacing: -.01em;
  color: var(--paper-000);
  overflow-wrap: break-word;
}

.page-faq .faq-hero .band-lede {
  margin: 0;
  max-width: 34em;
  font-size: 16px;
  line-height: 1.8;
  color: var(--silver-200);
}

.page-faq .faq-hero-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-hero-links a {
  display: inline-block;
  padding-bottom: 2px;
  font-size: 14px;
  font-weight: 600;
  color: var(--volt-200);
  text-decoration: none;
  border-bottom: 1px solid rgba(143, 182, 255, .45);
  transition: color .18s ease, border-color .18s ease;
}

.page-faq .faq-hero-links a:hover,
.page-faq .faq-hero-links a:focus-visible {
  color: var(--paper-000);
  border-bottom-color: var(--volt-500);
}

.page-faq .faq-hero-visual {
  min-width: 0;
}

.page-faq .faq-hero-visual .media-frame {
  width: 100%;
}

.page-faq .faq-hero .media-cap {
  margin: 14px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--silver-400);
}

/* ---------- 主题索引 ---------- */
.page-faq .faq-index-band {
  padding-top: 44px;
  padding-bottom: 44px;
  background: var(--ink-800);
  border-top: 1px solid var(--rule-dark);
  border-bottom: 1px solid var(--rule-dark);
}

.page-faq .faq-index-kicker {
  display: block;
  margin: 0 0 20px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--volt-200);
}

.page-faq .faq-topics {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-topic {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 14px 16px;
  background: rgba(8, 21, 15, .5);
  border: 1px solid var(--rule-dark);
  color: var(--paper-050);
  text-decoration: none;
  transition: border-color .16s ease, background-color .16s ease;
}

.page-faq .faq-topic:hover,
.page-faq .faq-topic:focus-visible {
  border-color: var(--volt-500);
  background: rgba(31, 107, 255, .12);
}

.page-faq .faq-topic-num {
  flex: none;
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .08em;
  color: var(--volt-200);
}

.page-faq .faq-topic-name {
  font-size: 14px;
  font-weight: 600;
  line-height: 1.5;
}

/* ---------- 分组抬头 ---------- */
.page-faq .faq-group-head {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
  margin: 0 0 30px;
}

.page-faq .faq-group-num {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .16em;
  color: var(--volt-700);
}

.page-faq .faq-group-head .band-title {
  margin: 0;
  font-family: var(--serif);
  font-weight: 800;
  font-size: clamp(24px, 5.2vw, 38px);
  line-height: 1.25;
  overflow-wrap: break-word;
}

.page-faq .faq-group-head .band-lede {
  margin: 6px 0 0;
  max-width: 40em;
  font-size: 16px;
  line-height: 1.8;
}

/* ---------- 折叠条目 ---------- */
.page-faq .faq-list {
  display: grid;
  gap: 12px;
}

.page-faq .faq-item {
  background: var(--paper-000);
  border: 1px solid var(--rule-light);
  border-left-width: 3px;
  border-left-color: var(--silver-200);
  box-shadow: var(--shadow-card);
  transition: border-left-color .16s ease, box-shadow .16s ease;
}

.page-faq .faq-item:hover {
  border-left-color: var(--volt-500);
}

.page-faq .faq-item[open] {
  border-left-color: var(--volt-500);
}

.page-faq .faq-q {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  padding: 18px 20px;
  margin: 0;
  cursor: pointer;
  list-style: none;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.55;
  color: var(--ink-text);
  overflow-wrap: break-word;
}

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

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

.page-faq .faq-q:focus-visible {
  outline: 2px solid var(--volt-500);
  outline-offset: -3px;
}

.page-faq .faq-q-mark {
  position: relative;
  flex: none;
  width: 16px;
  height: 16px;
  margin-top: 4px;
}

.page-faq .faq-q-mark::before,
.page-faq .faq-q-mark::after {
  content: "";
  position: absolute;
  background: var(--volt-500);
}

.page-faq .faq-q-mark::before {
  top: 7px;
  left: 0;
  width: 16px;
  height: 2px;
}

.page-faq .faq-q-mark::after {
  top: 0;
  left: 7px;
  width: 2px;
  height: 16px;
  transition: transform .18s ease, opacity .18s ease;
}

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

.page-faq .faq-a {
  padding: 0 20px 22px;
}

.page-faq .faq-a p {
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--faq-answer-ink);
  overflow-wrap: break-word;
}

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

.page-faq .faq-more {
  margin: 16px 0 0;
}

.page-faq .faq-more a {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding-bottom: 2px;
  font-size: 14px;
  font-weight: 600;
  color: var(--volt-700);
  text-decoration: none;
  border-bottom: 1px solid rgba(21, 82, 204, .32);
  transition: color .18s ease, border-color .18s ease;
}

.page-faq .faq-more a::after {
  content: "\2192";
  font-family: var(--mono);
  font-size: 13px;
}

.page-faq .faq-more a:hover,
.page-faq .faq-more a:focus-visible {
  color: var(--volt-500);
  border-bottom-color: var(--volt-500);
}

/* ---------- 求助区 ---------- */
.page-faq .faq-help .faq-group-num {
  color: var(--volt-200);
}

.page-faq .faq-help .band-title {
  color: var(--paper-000);
}

.page-faq .faq-help .band-lede {
  color: var(--silver-400);
}

.page-faq .faq-help-grid {
  align-items: start;
  row-gap: 36px;
}

.page-faq .faq-help-figure {
  min-width: 0;
}

.page-faq .faq-help-figure .media-frame {
  width: 100%;
}

.page-faq .faq-help .media-cap {
  margin: 14px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--silver-400);
}

.page-faq .faq-help-card {
  padding: 26px 24px 24px;
}

.page-faq .faq-help-card .card-title {
  margin: 0 0 18px;
  font-family: var(--serif);
  font-weight: 700;
  font-size: 20px;
  line-height: 1.4;
  color: var(--paper-000);
}

.page-faq .faq-channels {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--rule-dark);
}

.page-faq .faq-channels li {
  display: grid;
  grid-template-columns: 1fr;
  gap: 4px;
  padding: 13px 0;
  border-bottom: 1px solid var(--rule-dark);
}

.page-faq .faq-ch-label {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--silver-400);
}

.page-faq .faq-ch-value {
  font-size: 15px;
  font-weight: 500;
  line-height: 1.6;
  color: var(--paper-050);
  overflow-wrap: break-word;
  word-break: break-word;
}

.page-faq .faq-help-note {
  margin: 18px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--silver-400);
}

.page-faq .faq-help-act {
  margin: 22px 0 0;
}

/* ---------- 移动端断点 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-topics {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
  }

  .page-faq .faq-q {
    padding: 20px 26px;
  }

  .page-faq .faq-a {
    padding: 0 26px 24px;
  }

  .page-faq .faq-channels li {
    grid-template-columns: 96px minmax(0, 1fr);
    align-items: baseline;
    gap: 16px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-group-head {
    grid-template-columns: 88px minmax(0, 1fr);
    column-gap: 32px;
    row-gap: 4px;
  }

  .page-faq .faq-group-num {
    grid-column: 1;
    grid-row: 1 / span 2;
    padding-top: 10px;
  }

  .page-faq .faq-group-head .band-title {
    grid-column: 2;
  }

  .page-faq .faq-group-head .band-lede {
    grid-column: 2;
  }

  .page-faq .faq-list {
    margin-left: 120px;
  }
}

@media (min-width: 1080px) {
  .page-faq .faq-topics {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }

  .page-faq .faq-hero {
    padding-bottom: 96px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item,
  .page-faq .faq-topic,
  .page-faq .faq-q-mark::after,
  .page-faq .faq-more a,
  .page-faq .faq-hero-links a,
  .page-faq .faq-hero .crumbs-list a {
    transition: none;
  }
}
<<<END>>>