.page-faq {
  --faq-rail-w: 244px;
  font-family: var(--font-body);
  color: var(--paper);
  padding-block: clamp(20px, 3.4vw, 40px) clamp(48px, 7vw, 96px);
}

/* ===== 面包屑 ===== */
.page-faq .faq-crumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: var(--t-12);
  letter-spacing: .08em;
  color: var(--rock);
}
.page-faq .faq-crumb a {
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .18s var(--ease), border-color .18s var(--ease);
}
.page-faq .faq-crumb a:hover {
  color: var(--barley);
  border-bottom-color: var(--gold);
}
.page-faq .faq-crumb [aria-current="page"] {
  color: var(--barley);
}

/* ===== 首屏 ===== */
.page-faq .faq-hero {
  display: grid;
  gap: clamp(22px, 3vw, 34px);
  margin-top: clamp(18px, 2.6vw, 30px);
  padding-top: clamp(14px, 2vw, 22px);
}
.page-faq .faq-hero::before {
  content: "";
  grid-column: 1 / -1;
  height: 4px;
  background: linear-gradient(
    90deg,
    var(--crimson) 0 19%,
    var(--gold) 19% 38%,
    var(--turquoise) 38% 57%,
    var(--barley) 57% 76%,
    var(--clay) 76% 100%
  );
  opacity: .9;
}
.page-faq .faq-hero__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 5.4vw, 62px);
  line-height: 1.16;
  letter-spacing: -.02em;
  margin: 10px 0 0;
  color: var(--paper);
}
.page-faq .faq-hero__lead {
  margin: 18px 0 0;
  max-width: 46ch;
  font-size: var(--t-16);
  line-height: 1.9;
  color: var(--mist);
}
.page-faq .faq-hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: clamp(16px, 3vw, 34px);
  margin-top: clamp(20px, 3vw, 30px);
  padding-top: 16px;
  border-top: var(--line);
}
.page-faq .faq-stat {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin: 0;
}
.page-faq .faq-stat__n {
  font-family: var(--font-mono);
  font-size: var(--t-28);
  line-height: 1;
  color: var(--barley);
}
.page-faq .faq-stat__l {
  font-size: var(--t-12);
  letter-spacing: .04em;
  color: var(--rock);
}
.page-faq .faq-hero__media {
  position: relative;
  margin: 0;
  padding: 10px;
  border: var(--line-gold);
  background:
    linear-gradient(140deg, rgba(217, 58, 43, .16), rgba(23, 163, 152, .14) 55%, rgba(227, 178, 60, .16)),
    var(--ink);
  box-shadow: 10px 10px 0 rgba(9, 15, 33, .6);
}
.page-faq .faq-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ===== 两栏骨架 ===== */
.page-faq .faq-body {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
  margin-top: clamp(34px, 5vw, 68px);
}

/* ===== 左侧吸附索引 ===== */
.page-faq .faq-rail {
  border: var(--line);
  background: rgba(27, 42, 85, .58);
  padding: 16px 14px 14px;
}
.page-faq .faq-rail__label {
  margin: 0 0 12px;
  padding-bottom: 10px;
  border-bottom: var(--line-gold);
  font-family: var(--font-mono);
  font-size: var(--t-12);
  letter-spacing: .18em;
  color: var(--gold);
}
.page-faq .faq-rail__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}
.page-faq .faq-rail__link {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 10px;
  padding: 10px 8px;
  text-decoration: none;
  color: var(--paper);
  border-left: 2px solid transparent;
  transition: background .18s var(--ease), border-color .18s var(--ease);
}
.page-faq .faq-rail__link:hover {
  background: rgba(245, 238, 226, .07);
  border-left-color: var(--gold);
}
.page-faq .faq-rail__num {
  font-family: var(--font-mono);
  font-size: var(--t-12);
  color: var(--rock);
}
.page-faq .faq-rail__name {
  font-size: var(--t-16);
  line-height: 1.4;
}
.page-faq .faq-rail__count {
  font-family: var(--font-mono);
  font-size: var(--t-12);
  color: var(--mist);
}
.page-faq .faq-rail__hint {
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: var(--line);
  font-size: var(--t-12);
  line-height: 1.7;
  color: var(--rock);
}

/* 展开时同步高亮所属分组 */
.page-faq:has(#ask-intro details[open]) .faq-rail__link[href="#ask-intro"],
.page-faq:has(#ask-pc details[open]) .faq-rail__link[href="#ask-pc"],
.page-faq:has(#ask-ios details[open]) .faq-rail__link[href="#ask-ios"],
.page-faq:has(#ask-account details[open]) .faq-rail__link[href="#ask-account"],
.page-faq:has(#ask-news details[open]) .faq-rail__link[href="#ask-news"] {
  background: rgba(242, 208, 107, .12);
  border-left-color: var(--barley);
}
.page-faq:has(#ask-intro details[open]) .faq-rail__link[href="#ask-intro"] .faq-rail__name,
.page-faq:has(#ask-pc details[open]) .faq-rail__link[href="#ask-pc"] .faq-rail__name,
.page-faq:has(#ask-ios details[open]) .faq-rail__link[href="#ask-ios"] .faq-rail__name,
.page-faq:has(#ask-account details[open]) .faq-rail__link[href="#ask-account"] .faq-rail__name,
.page-faq:has(#ask-news details[open]) .faq-rail__link[href="#ask-news"] .faq-rail__name {
  color: var(--barley);
}

/* ===== 问答流 ===== */
.page-faq .faq-flow {
  display: grid;
  gap: clamp(34px, 5vw, 60px);
  min-width: 0;
}
.page-faq .faq-group {
  --accent: var(--turquoise);
  scroll-margin-top: calc(var(--bar-h) + 24px);
  min-width: 0;
}
.page-faq .faq-group--pc { --accent: var(--crimson); }
.page-faq .faq-group--ios { --accent: var(--gold); }
.page-faq .faq-group--account { --accent: var(--mist); }
.page-faq .faq-group--news { --accent: var(--barley); }

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  padding-bottom: 14px;
  border-bottom: 1px solid rgba(140, 147, 166, .34);
}
.page-faq .faq-group__num {
  display: inline-grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--accent);
  color: var(--ink-deep);
  font-family: var(--font-mono);
  font-size: var(--t-13);
  font-weight: 700;
  letter-spacing: .04em;
}
.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(22px, 3.2vw, 30px);
  line-height: 1.3;
  letter-spacing: -.01em;
  color: var(--paper);
}
.page-faq .faq-group__lede {
  margin: 8px 0 0;
  font-size: var(--t-13);
  line-height: 1.75;
  color: var(--rock);
}
.page-faq .faq-group__count {
  grid-column: 2;
  justify-self: start;
  margin-top: 2px;
  font-family: var(--font-mono);
  font-size: var(--t-12);
  letter-spacing: .08em;
  color: var(--accent);
}

.page-faq .faq-group__figure {
  margin: 22px 0 4px;
  max-width: 340px;
  padding: 8px;
  border: var(--line-gold);
  border-left: 3px solid var(--accent);
  background: rgba(227, 178, 60, .06);
}
.page-faq .faq-group__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}
.page-faq .faq-group__figure figcaption {
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: var(--t-12);
  letter-spacing: .04em;
  color: var(--gold);
}

/* ===== 折叠条目 ===== */
.page-faq .faq-item {
  border-bottom: 1px solid rgba(140, 147, 166, .22);
}
.page-faq .faq-item__q {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 16px 2px;
  font-size: var(--t-18);
  line-height: 1.6;
  color: var(--paper);
  cursor: pointer;
  list-style: none;
  transition: color .18s var(--ease);
}
.page-faq .faq-item__q::-webkit-details-marker {
  display: none;
}
.page-faq .faq-item__q:hover {
  color: var(--barley);
}
.page-faq .faq-item__dot {
  flex: 0 0 auto;
  width: 7px;
  height: 7px;
  margin-top: .62em;
  border-radius: 50%;
  background: var(--accent);
}
.page-faq .faq-item__q::after {
  content: "";
  flex: 0 0 auto;
  width: 8px;
  height: 8px;
  margin-left: auto;
  margin-top: .58em;
  border-right: 1.5px solid var(--gold);
  border-bottom: 1.5px solid var(--gold);
  transform: rotate(45deg);
  transition: transform .2s var(--ease);
}
.page-faq .faq-item[open] .faq-item__q {
  color: var(--barley);
}
.page-faq .faq-item[open] .faq-item__q::after {
  transform: rotate(-135deg);
}
.page-faq .faq-item__a {
  margin: 0;
  padding: 0 0 18px 17px;
  max-width: 60ch;
  font-size: var(--t-16);
  line-height: 1.85;
  color: var(--mist);
}
.page-faq .faq-item__a a {
  color: var(--turquoise);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.page-faq .faq-item__a a:hover {
  color: var(--barley);
}

/* ===== 收尾求助 ===== */
.page-faq .faq-help {
  margin-top: clamp(42px, 6vw, 84px);
  padding: clamp(22px, 4vw, 44px);
  border: var(--line-gold);
  border-left: 4px solid var(--crimson);
  background: linear-gradient(135deg, rgba(217, 58, 43, .16), rgba(16, 27, 59, .25) 62%);
}
.page-faq .faq-help__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(24px, 3.6vw, 38px);
  line-height: 1.28;
  letter-spacing: -.01em;
  color: var(--paper);
}
.page-faq .faq-help__lede {
  margin: 14px 0 0;
  max-width: 52ch;
  font-size: var(--t-16);
  line-height: 1.85;
  color: var(--mist);
}
.page-faq .faq-help__list {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  gap: 16px;
}
.page-faq .faq-help__list li {
  border-top: 1px solid rgba(227, 178, 60, .42);
  padding-top: 12px;
  font-size: var(--t-16);
  line-height: 1.75;
  color: var(--mist);
}
.page-faq .faq-help__list strong {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: var(--t-12);
  font-weight: 400;
  letter-spacing: .12em;
  color: var(--barley);
}
.page-faq .faq-help__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}
.page-faq .faq-help__note {
  margin: 20px 0 0;
  font-size: var(--t-12);
  line-height: 1.8;
  color: var(--rock);
}

/* ===== 断点 ===== */
@media (min-width: 720px) {
  .page-faq .faq-hero__lead {
    font-size: var(--t-18);
  }
  .page-faq .faq-help__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4.4fr);
    align-items: end;
    column-gap: clamp(24px, 3.4vw, 48px);
  }
  .page-faq .faq-group__head {
    grid-template-columns: auto minmax(0, 1fr) auto;
    align-items: baseline;
  }
  .page-faq .faq-group__count {
    grid-column: 3;
    justify-self: end;
    margin-top: 0;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-body {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
    align-items: start;
  }
  .page-faq .faq-rail {
    position: sticky;
    top: calc(var(--bar-h) + 20px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-rail__link,
  .page-faq .faq-item__q,
  .page-faq .faq-item__q::after,
  .page-faq .faq-crumb a {
    transition: none;
  }
}
<<<END>>>