.page-faq {
  --faq-rule: rgba(11, 31, 51, .14);
  --faq-rule-light: rgba(245, 242, 234, .22);
  --faq-ink-soft: rgba(11, 31, 51, .68);
  --faq-cut: 20px;
  background: var(--bt-paper);
  color: var(--bt-black);
  font-family: var(--bt-sans);
  line-height: 1.75;
  overflow-x: hidden;
}

.page-faq .bt-crumbs {
  padding-top: 22px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: 30px 0 46px;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: var(--faq-rule);
}

.page-faq .faq-hero__inner {
  display: grid;
  gap: 32px;
}

.page-faq .faq-hero__eyebrow {
  margin: 0 0 16px;
  font-family: var(--bt-mono);
  font-size: .72rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--bt-mist);
}

.page-faq .faq-hero h1 {
  margin: 0 0 20px;
  font-family: var(--bt-serif);
  font-weight: 700;
  font-size: clamp(2rem, 6vw, 3.4rem);
  line-height: 1.14;
  letter-spacing: -.02em;
  color: var(--bt-ink);
  max-width: 22ch;
}

.page-faq .faq-hero__lead {
  margin: 0 0 24px;
  max-width: 56ch;
  font-size: 1.02rem;
  color: var(--faq-ink-soft);
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 26px;
}

.page-faq .faq-hero__jump {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-hero__jump a {
  display: inline-block;
  padding: 5px 13px;
  font-size: .82rem;
  color: var(--bt-ink);
  text-decoration: none;
  border: 1px solid var(--bt-silver);
  border-radius: 999px;
  transition: border-color var(--bt-dur) var(--bt-ease),
              background-color var(--bt-dur) var(--bt-ease),
              color var(--bt-dur) var(--bt-ease);
}

.page-faq .faq-hero__jump a:hover,
.page-faq .faq-hero__jump a:focus-visible {
  border-color: var(--bt-gold);
  background: var(--bt-gold-soft);
  color: var(--bt-gold-deep);
}

.page-faq .faq-hero__aside {
  background: var(--bt-ink);
  color: var(--bt-paper);
  padding: 26px 24px 28px;
  clip-path: polygon(0 0, calc(100% - var(--faq-cut)) 0, 100% var(--faq-cut), 100% 100%, 0 100%);
}

.page-faq .faq-hero__asideKey {
  margin: 0 0 4px;
  font-family: var(--bt-mono);
  font-size: .7rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--bt-mist-soft);
}

.page-faq .faq-hero__asideVal {
  margin: 0 0 18px;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--bt-paper);
}

.page-faq .faq-hero__asideVal--mono {
  font-family: var(--bt-mono);
  color: var(--bt-gold-soft);
  letter-spacing: .04em;
}

.page-faq .faq-hero__asideNote {
  margin: 0;
  padding-top: 16px;
  border-top: 1px solid var(--faq-rule-light);
  font-size: .88rem;
  line-height: 1.7;
  color: rgba(245, 242, 234, .78);
}

/* ---------- 区块骨架微调 ---------- */
.page-faq .faq-block {
  padding: 56px 0;
}

.page-faq .faq-block--mist {
  background: var(--bt-mist-soft);
}

.page-faq .faq-block--dark {
  background: var(--bt-night);
  color: var(--bt-paper);
}

.page-faq .bt-section__index {
  font-family: var(--bt-mono);
  color: var(--bt-gold);
  letter-spacing: .1em;
}

.page-faq .bt-section__title {
  font-family: var(--bt-serif);
  color: var(--bt-ink);
}

.page-faq .bt-section__lead {
  color: var(--faq-ink-soft);
}

/* ---------- 图片框 ---------- */
.page-faq .faq-figure {
  margin: 32px 0 0;
}

.page-faq .bt-figure__frame {
  background: var(--bt-silver);
  overflow: hidden;
}

.page-faq .bt-figure__img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-faq .bt-figure__caption {
  margin-top: 12px;
  font-size: .84rem;
  color: var(--faq-ink-soft);
}

.page-faq .faq-split__media .faq-figure {
  margin: 0;
}

/* ---------- 三步路径 ---------- */
.page-faq .faq-steps {
  list-style: none;
  margin: 40px 0 0;
  padding: 0;
}

.page-faq .faq-steps__item {
  position: relative;
  display: grid;
  grid-template-columns: 62px minmax(0, 1fr);
  column-gap: 18px;
  padding: 26px 0;
  border-top: 1px solid var(--faq-rule);
}

.page-faq .faq-steps__item:last-child {
  border-bottom: 1px solid var(--faq-rule);
}

.page-faq .faq-steps__num {
  font-family: var(--bt-mono);
  font-size: 1.5rem;
  font-weight: 600;
  line-height: 1.2;
  color: var(--bt-gold);
  letter-spacing: .02em;
}

.page-faq .faq-steps__title {
  margin: 0 0 8px;
  font-family: var(--bt-serif);
  font-size: 1.18rem;
  font-weight: 600;
  line-height: 1.4;
  color: var(--bt-ink);
}

.page-faq .faq-steps__text {
  margin: 0 0 12px;
  font-size: .96rem;
  color: var(--faq-ink-soft);
  max-width: 62ch;
}

.page-faq .faq-steps__link {
  display: inline-block;
  font-size: .86rem;
  font-weight: 600;
  color: var(--bt-gold-deep);
  text-decoration: none;
  border-bottom: 1px solid var(--bt-gold-soft);
  padding-bottom: 2px;
  transition: border-color var(--bt-dur) var(--bt-ease),
              color var(--bt-dur) var(--bt-ease);
}

.page-faq .faq-steps__link:hover,
.page-faq .faq-steps__link:focus-visible {
  color: var(--bt-ink);
  border-color: var(--bt-ink);
}

/* ---------- 检索：左右分栏 ---------- */
.page-faq .faq-split {
  display: grid;
  gap: 34px;
  margin-top: 34px;
}

.page-faq .faq-feature {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .faq-feature__item {
  padding: 20px 0;
  border-bottom: 1px dashed rgba(11, 31, 51, .2);
}

.page-faq .faq-feature__item:first-child {
  padding-top: 0;
}

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

.page-faq .faq-feature__title {
  margin: 0 0 8px;
  font-family: var(--bt-serif);
  font-size: 1.06rem;
  font-weight: 600;
  line-height: 1.45;
  color: var(--bt-ink);
}

.page-faq .faq-feature__text {
  margin: 0;
  font-size: .94rem;
  color: var(--faq-ink-soft);
  max-width: 56ch;
}

.page-faq .faq-feature__hint {
  margin: 10px 0 0;
  font-size: .74rem;
  letter-spacing: .04em;
  color: var(--bt-gold-deep);
}

/* ---------- 订阅三卡 ---------- */
.page-faq .faq-sub {
  margin-top: 34px;
}

.page-faq .faq-sub__card {
  position: relative;
  background: var(--bt-paper);
  border: 1px solid var(--bt-silver);
  border-top: 3px solid var(--bt-gold);
  padding: 24px 22px 26px;
  clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 0 100%);
  transition: transform var(--bt-dur) var(--bt-ease),
              box-shadow var(--bt-dur) var(--bt-ease);
}

.page-faq .faq-sub__card:hover,
.page-faq .faq-sub__card:focus-within {
  transform: translateY(-3px);
  box-shadow: var(--bt-shadow);
}

.page-faq .faq-sub__tag {
  margin: 0 0 10px;
  font-family: var(--bt-mono);
  font-size: .72rem;
  letter-spacing: .12em;
  color: var(--bt-mist);
}

.page-faq .faq-sub__title {
  margin: 0 0 10px;
  font-family: var(--bt-serif);
  font-size: 1.06rem;
  font-weight: 600;
  line-height: 1.45;
  color: var(--bt-ink);
}

.page-faq .faq-sub__text {
  margin: 0;
  font-size: .92rem;
  color: var(--faq-ink-soft);
}

.page-faq .faq-note {
  margin: 30px 0 0;
  font-size: .92rem;
}

.page-faq .faq-inlineLink {
  margin-top: 22px;
}

/* ---------- 版本核验深色区 ---------- */
.page-faq .faq-block--dark .bt-section__index {
  color: var(--bt-gold-soft);
}

.page-faq .faq-verify__title {
  color: var(--bt-paper);
}

.page-faq .faq-verify__lead {
  color: rgba(245, 242, 234, .76);
}

.page-faq .faq-verify__steps {
  list-style: none;
  margin: 34px 0 0;
  padding: 0;
  display: grid;
  gap: 22px;
}

.page-faq .faq-verify__step {
  position: relative;
  padding: 24px 24px 26px;
  background: rgba(245, 242, 234, .06);
  border-left: 3px solid var(--bt-gold);
}

.page-faq .faq-verify__stepNum {
  display: block;
  margin-bottom: 10px;
  font-size: .72rem;
  letter-spacing: .14em;
  color: var(--bt-gold-soft);
}

.page-faq .faq-verify__stepText {
  margin: 0;
  font-size: .96rem;
  line-height: 1.8;
  color: rgba(245, 242, 234, .88);
  max-width: 62ch;
}

.page-faq .faq-verify__stepText strong {
  font-family: var(--bt-mono);
  font-weight: 600;
  color: var(--bt-gold-soft);
  letter-spacing: .04em;
}

.page-faq .faq-verify__foot {
  margin: 26px 0 0;
  font-size: .9rem;
  color: rgba(245, 242, 234, .7);
  max-width: 62ch;
}

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

.page-faq .faq-block--dark .bt-btn--quiet {
  color: var(--bt-gold-soft);
}

/* ---------- 账号与权限 ---------- */
.page-faq .faq-account__list {
  margin: 34px 0 0;
  display: grid;
  gap: 0;
}

.page-faq .faq-account__row {
  display: grid;
  gap: 8px;
  padding: 22px 0;
  border-top: 1px solid var(--faq-rule);
}

.page-faq .faq-account__row:last-child {
  border-bottom: 1px solid var(--faq-rule);
}

.page-faq .faq-account__key {
  font-family: var(--bt-serif);
  font-size: 1.06rem;
  font-weight: 600;
  color: var(--bt-ink);
}

.page-faq .faq-account__val {
  margin: 0;
  font-size: .95rem;
  color: var(--faq-ink-soft);
  max-width: 62ch;
}

/* ---------- 手风琴问答 ---------- */
.page-faq .faq-group {
  margin-top: 34px;
}

.page-faq .faq-group__title {
  margin: 0 0 4px;
  padding-bottom: 10px;
  font-family: var(--bt-mono);
  font-size: .78rem;
  font-weight: 600;
  letter-spacing: .14em;
  color: var(--bt-ink);
  border-bottom: 2px solid var(--bt-ink);
}

.page-faq .faq-q {
  border-bottom: 1px solid var(--faq-rule);
}

.page-faq .faq-q__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: start;
  gap: 14px;
  padding: 18px 2px;
  cursor: pointer;
  list-style: none;
  transition: background-color var(--bt-dur) var(--bt-ease);
}

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

.page-faq .faq-q__head:hover {
  background: var(--bt-gold-soft);
}

.page-faq .faq-q__head:focus-visible {
  outline: 2px solid var(--bt-gold-deep);
  outline-offset: 2px;
}

.page-faq .faq-q__marker {
  font-size: .74rem;
  letter-spacing: .08em;
  color: var(--bt-mist);
  padding-top: 3px;
  min-width: 26px;
}

.page-faq .faq-q__title {
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.6;
  color: var(--bt-ink);
}

.page-faq .faq-q__chev {
  width: 9px;
  height: 9px;
  margin-top: 7px;
  border-right: 1.5px solid var(--bt-gold-deep);
  border-bottom: 1.5px solid var(--bt-gold-deep);
  transform: rotate(45deg);
  transition: transform var(--bt-dur) var(--bt-ease);
}

.page-faq .faq-q[open] .faq-q__chev {
  transform: rotate(-135deg);
}

.page-faq .faq-q__body {
  padding: 0 2px 22px 40px;
}

.page-faq .faq-q__body p {
  margin: 0;
  font-size: .94rem;
  color: var(--faq-ink-soft);
  max-width: 62ch;
}

/* ---------- 联系支持 ---------- */
.page-faq .faq-support {
  display: grid;
  gap: 30px;
}

.page-faq .faq-support__panel {
  background: var(--bt-gold-soft);
  border-left: 4px solid var(--bt-gold);
  padding: 30px 26px 32px;
  clip-path: polygon(0 0, calc(100% - 22px) 0, 100% 22px, 100% 100%, 0 100%);
}

.page-faq .faq-support__eyebrow {
  margin: 0 0 12px;
  font-size: .72rem;
  letter-spacing: .16em;
  color: var(--bt-gold-deep);
}

.page-faq .faq-support__title {
  margin: 0 0 14px;
  font-family: var(--bt-serif);
  font-size: clamp(1.4rem, 3.4vw, 1.9rem);
  font-weight: 700;
  line-height: 1.3;
  color: var(--bt-ink);
}

.page-faq .faq-support__text {
  margin: 0 0 22px;
  font-size: .95rem;
  color: rgba(11, 31, 51, .78);
  max-width: 54ch;
}

.page-faq .faq-support__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-faq .faq-support__meta {
  margin: 0;
  display: grid;
  gap: 0;
  align-content: start;
}

.page-faq .faq-support__metaRow {
  display: grid;
  gap: 4px;
  padding: 14px 0;
  border-bottom: 1px solid var(--faq-rule);
}

.page-faq .faq-support__metaRow:first-child {
  border-top: 1px solid var(--faq-rule);
}

.page-faq .faq-support__metaRow dt {
  font-family: var(--bt-mono);
  font-size: .72rem;
  letter-spacing: .1em;
  color: var(--bt-mist);
}

.page-faq .faq-support__metaRow dd {
  margin: 0;
  font-size: .95rem;
  color: var(--bt-ink);
  word-break: break-word;
}

/* ---------- 窄屏收束 ---------- */
@media (max-width: 419px) {
  .page-faq .faq-steps__item {
    grid-template-columns: 46px minmax(0, 1fr);
    column-gap: 12px;
  }

  .page-faq .faq-steps__num {
    font-size: 1.2rem;
  }

  .page-faq .faq-q__body {
    padding-left: 0;
  }
}

/* ---------- 平板 ---------- */
@media (min-width: 680px) {
  .page-faq .faq-support {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
    gap: 40px;
  }

  .page-faq .faq-verify__steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 26px;
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 900px) {
  .page-faq .faq-hero {
    padding: 46px 0 64px;
  }

  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.62fr) minmax(0, 1fr);
    gap: 60px;
    align-items: start;
  }

  .page-faq .faq-hero__aside {
    margin-top: 12px;
  }

  .page-faq .faq-block {
    padding: 78px 0;
  }

  .page-faq .faq-split {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
    gap: 54px;
    align-items: center;
    margin-top: 42px;
  }

  .page-faq .faq-steps {
    margin-top: 46px;
  }

  .page-faq .faq-steps__item {
    grid-template-columns: 108px minmax(0, 1fr);
    column-gap: 28px;
    padding: 32px 0;
  }

  .page-faq .faq-steps__num {
    font-size: 2rem;
  }

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

  .page-faq .faq-sub {
    margin-top: 42px;
  }

  .page-faq .faq-sub__card {
    padding: 28px 26px 30px;
  }

  .page-faq .faq-account__list {
    margin-top: 42px;
  }

  .page-faq .faq-account__row {
    grid-template-columns: minmax(0, 300px) minmax(0, 1fr);
    gap: 32px;
    align-items: baseline;
    padding: 26px 0;
  }

  .page-faq .faq-group {
    margin-top: 44px;
  }

  .page-faq .faq-q__body {
    padding-left: 40px;
    padding-bottom: 24px;
  }
}
<<<END>>>