.page-faq {
  padding: 26px 18px 88px;
  color: var(--bv-ink);
  font-family: var(--bv-sans);
}

.page-faq .faq-inner {
  max-width: 1280px;
  margin: 0 auto;
}

.page-faq .faq-crumbs__sep {
  color: var(--bv-mist);
  padding: 0 6px;
}

/* ---------- 顶部 ---------- */
.page-faq .faq-hero {
  padding-top: 6px;
}

.page-faq .faq-hero__title {
  margin: 14px 0 0;
  max-width: 20em;
}

.page-faq .faq-hero__lead {
  margin: 18px 0 0;
  max-width: 40em;
}

.page-faq .faq-hero__media {
  margin: 30px 0 0;
}

/* ---------- 两栏外壳 ---------- */
.page-faq .faq-shell {
  margin-top: 52px;
}

.page-faq .faq-index {
  margin-bottom: 26px;
}

.page-faq .faq-index__inner {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.page-faq .faq-search__label {
  display: block;
  font-family: var(--bv-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--bv-mist);
  margin-bottom: 8px;
}

.page-faq .faq-search__input {
  width: 100%;
}

.page-faq .faq-nav {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 2px 2px 8px;
  scrollbar-width: none;
}

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

.page-faq .faq-nav__link {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 16px;
  border: 1px solid var(--bv-line);
  border-radius: var(--bv-pill);
  background: var(--bv-deep);
  color: var(--bv-ink);
  font-size: 14px;
  text-decoration: none;
  white-space: nowrap;
  transition: border-color 0.2s ease, color 0.2s ease, background-color 0.2s ease;
}

.page-faq .faq-nav__link:hover,
.page-faq .faq-nav__link:focus-visible {
  border-color: var(--bv-cyan);
  color: var(--bv-cyan);
  background: rgba(44, 232, 192, 0.08);
}

.page-faq .faq-nav__num {
  font-family: var(--bv-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--bv-mist);
}

.page-faq .faq-nav__link:hover .faq-nav__num,
.page-faq .faq-nav__link:focus-visible .faq-nav__num {
  color: var(--bv-cyan);
}

.page-faq .faq-body {
  min-width: 0;
}

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  margin-bottom: 50px;
  scroll-margin-top: 76px;
}

.page-faq .faq-group__head {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--bv-line);
  margin-bottom: 18px;
  transition: border-color 0.25s ease;
}

.page-faq .faq-group__num {
  flex: 0 0 auto;
  padding-top: 9px;
  font-family: var(--bv-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--bv-mist);
  transition: color 0.25s ease;
}

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

.page-faq .faq-group__desc {
  margin: 8px 0 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--bv-mist);
}

.page-faq .faq-group:target .faq-group__num {
  color: var(--bv-cyan);
}

.page-faq .faq-group:target .faq-group__head {
  border-bottom-color: var(--bv-cyan);
}

/* ---------- 问答条目 ---------- */
.page-faq .faq-item {
  border: 1px solid var(--bv-line);
  border-radius: var(--bv-radius-m);
  background: var(--bv-deep);
  margin-bottom: 10px;
  overflow: hidden;
  transition: border-color 0.22s ease;
}

.page-faq .faq-item[open] {
  border-color: var(--bv-cyan);
}

.page-faq .faq-item__q {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  padding: 17px 20px;
  cursor: pointer;
  list-style: none;
  font-size: 16.5px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--bv-ink);
}

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

.page-faq .faq-item__q:focus-visible {
  outline: 2px solid var(--bv-cyan);
  outline-offset: -2px;
}

.page-faq .faq-item__mark {
  position: relative;
  flex: 0 0 auto;
  width: 15px;
  height: 15px;
  margin-top: 7px;
}

.page-faq .faq-item__mark::before,
.page-faq .faq-item__mark::after {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 15px;
  height: 1.5px;
  background: var(--bv-cyan);
  transform: translateY(-50%);
  transition: transform 0.24s ease;
}

.page-faq .faq-item__mark::after {
  transform: translateY(-50%) rotate(90deg);
}

.page-faq .faq-item[open] .faq-item__mark::after {
  transform: translateY(-50%) rotate(0deg);
}

.page-faq .faq-item__a {
  margin: 0 20px 20px;
  padding-top: 15px;
  border-top: 1px solid var(--bv-line);
}

.page-faq .faq-item__a p {
  margin: 0;
  font-size: 16px;
  line-height: 1.78;
  color: var(--bv-ink);
}

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

.page-faq .faq-figure {
  margin: 26px 0 0;
}

/* ---------- 底部联系 ---------- */
.page-faq .faq-support {
  margin-top: 56px;
  scroll-margin-top: 76px;
}

.page-faq .faq-support__box {
  position: relative;
  overflow: hidden;
  padding: 30px 22px;
  border: 1px solid var(--bv-line);
  border-radius: var(--bv-radius-l);
  background: linear-gradient(135deg, var(--bv-deep) 0%, var(--bv-panel) 100%);
}

.page-faq .faq-support__box::before {
  content: "";
  position: absolute;
  top: -46%;
  right: -14%;
  width: 230px;
  height: 230px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(44, 232, 192, 0.22), rgba(44, 232, 192, 0) 70%);
  pointer-events: none;
}

.page-faq .faq-support__title {
  position: relative;
  margin: 12px 0 12px;
}

.page-faq .faq-support__lead {
  position: relative;
  margin: 0;
  max-width: 42em;
  font-size: 16px;
  line-height: 1.75;
  color: var(--bv-ink);
}

.page-faq .faq-support__channels {
  position: relative;
  display: grid;
  gap: 12px;
  margin-top: 24px;
}

.page-faq .faq-support__channel {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 14px 16px;
  border: 1px solid var(--bv-line);
  border-radius: var(--bv-radius-s);
  background: rgba(10, 20, 36, 0.55);
}

.page-faq .faq-support__label {
  font-family: var(--bv-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--bv-mist);
}

.page-faq .faq-support__value {
  font-size: 16px;
  line-height: 1.5;
  color: var(--bv-ink);
  word-break: break-all;
}

.page-faq .faq-support__tip {
  position: relative;
  margin: 20px 0 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--bv-mist);
}

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

/* ---------- 平板及以上 ---------- */
@media (min-width: 768px) {
  .page-faq {
    padding: 34px 32px 110px;
  }

  .page-faq .faq-support__box {
    padding: 42px 38px;
  }

  .page-faq .faq-support__channels {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 1024px) {
  .page-faq {
    padding: 44px 48px 128px;
  }

  .page-faq .faq-shell {
    display: grid;
    grid-template-columns: 214px minmax(0, 1fr);
    gap: 52px;
    align-items: start;
    margin-top: 64px;
  }

  .page-faq .faq-index {
    margin-bottom: 0;
  }

  .page-faq .faq-index__inner {
    position: sticky;
    top: 36px;
  }

  .page-faq .faq-nav {
    flex-direction: column;
    gap: 2px;
    overflow: visible;
    padding: 0;
  }

  .page-faq .faq-nav__link {
    width: 100%;
    padding: 11px 14px;
    border: 0;
    border-left: 2px solid var(--bv-line);
    border-radius: 0 var(--bv-radius-s) var(--bv-radius-s) 0;
    background: transparent;
    font-size: 15px;
  }

  .page-faq .faq-nav__link:hover,
  .page-faq .faq-nav__link:focus-visible {
    border-left-color: var(--bv-cyan);
    background: rgba(44, 232, 192, 0.06);
  }

  .page-faq .faq-group {
    scroll-margin-top: 40px;
    margin-bottom: 64px;
  }

  .page-faq .faq-item__q {
    padding: 20px 26px;
    font-size: 17px;
  }

  .page-faq .faq-item__a {
    margin: 0 26px 22px;
  }

  .page-faq .faq-figure {
    margin-top: 30px;
    max-width: 620px;
  }

  .page-faq .faq-support {
    margin-top: 88px;
  }
}
<<<END>>>