.page-faq {
  --faq-rule: rgba(195, 205, 214, .14);
  --faq-edge: rgba(46, 158, 134, .45);
  --faq-shell: rgba(14, 44, 56, .62);
  --faq-shell-open: rgba(14, 44, 56, .92);
  position: relative;
  padding-bottom: 88px;
  overflow-x: hidden;
}

/* ---------- 面包屑 ---------- */
.page-faq .breadcrumb {
  padding: 20px 0 0;
  font-size: .8125rem;
  color: var(--quiet);
  letter-spacing: .02em;
}
.page-faq .breadcrumb a {
  color: var(--silver);
  text-decoration: none;
  border-bottom: 1px solid rgba(195, 205, 214, .3);
  padding-bottom: 1px;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}
.page-faq .breadcrumb a:hover,
.page-faq .breadcrumb a:focus-visible {
  color: var(--lake);
  border-color: var(--lake);
}
.page-faq .breadcrumb span[aria-hidden] {
  margin: 0 8px;
  color: var(--quiet);
}

/* ---------- 页头 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: 26px 0 66px;
  background:
    radial-gradient(115% 92% at 84% -12%, rgba(20, 112, 143, .42) 0%, rgba(6, 26, 36, 0) 62%),
    linear-gradient(180deg, #0A4B60 0%, #061A24 84%);
  border-bottom: 1px solid var(--faq-rule);
}
.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 8%;
  right: 8%;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--lake), transparent);
  opacity: .55;
  pointer-events: none;
}
.page-faq .faq-hero__grid {
  display: grid;
  gap: 34px;
  align-items: center;
}
.page-faq .faq-hero h1 {
  margin: 12px 0 0;
  font-size: clamp(1.95rem, 4.6vw, 3.4rem);
  line-height: 1.16;
  letter-spacing: -.02em;
  font-weight: 800;
  color: var(--mist);
}
.page-faq .faq-hero .lead {
  margin: 18px 0 0;
  max-width: 34em;
  font-size: var(--fs-body);
  line-height: 1.78;
  color: var(--silver);
}
.page-faq .faq-hero__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 26px 0 0;
  font-size: .8125rem;
  color: var(--quiet);
}
.page-faq .faq-hero__sep {
  color: rgba(195, 205, 214, .35);
}
.page-faq .faq-hero__visual {
  position: relative;
  transform: rotate(-1.2deg);
}
.page-faq .faq-hero__visual .media-frame {
  border-radius: 14px;
  overflow: hidden;
  border: 1px solid var(--line);
  box-shadow: 0 24px 60px -30px rgba(0, 0, 0, .75);
}
.page-faq .faq-hero__visual img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}

/* ---------- 检索条 ---------- */
.page-faq .faq-board {
  position: relative;
  z-index: 2;
  margin-top: -28px;
  padding: 0;
}
.page-faq .faq-board__bar {
  display: grid;
  gap: 12px;
  padding: 18px 22px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: var(--glass);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
}
.page-faq .faq-board__label {
  display: block;
  font-size: .75rem;
  color: var(--quiet);
  letter-spacing: .06em;
}
.page-faq .faq-board__input {
  display: block;
  width: 100%;
  margin-top: 8px;
  padding: 11px 14px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: rgba(6, 26, 36, .72);
  color: var(--mist);
  font-family: var(--font-sans);
  font-size: .9375rem;
  line-height: 1.5;
  transition: border-color .2s var(--ease);
}
.page-faq .faq-board__input::placeholder {
  color: rgba(147, 167, 179, .75);
}
.page-faq .faq-board__input:focus-visible {
  outline: 2px solid var(--lake);
  outline-offset: 2px;
  border-color: transparent;
}
.page-faq .faq-board__state {
  margin: 0;
  font-size: .75rem;
  color: var(--quiet);
  letter-spacing: .05em;
}

/* ---------- 两栏骨架 ---------- */
.page-faq .faq-body {
  display: grid;
  gap: 40px;
  margin-top: 52px;
}
.page-faq .faq-main {
  min-width: 0;
}

/* ---------- 左侧分类索引 ---------- */
.page-faq .faq-nav .eyebrow {
  display: block;
}
.page-faq .faq-nav__list {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 4px;
}
.page-faq .faq-nav__item {
  display: grid;
  grid-template-columns: 28px 12px minmax(0, 1fr);
  align-items: center;
  gap: 10px;
  padding: 11px 12px;
  border-radius: 10px;
  border-left: 2px solid transparent;
  color: var(--silver);
  text-decoration: none;
  transition: background .22s var(--ease), color .22s var(--ease), border-color .22s var(--ease);
}
.page-faq .faq-nav__item:hover,
.page-faq .faq-nav__item:focus-visible {
  background: rgba(20, 112, 143, .16);
  color: var(--mist);
}
.page-faq .faq-nav__item:focus-visible {
  outline: 2px solid var(--lake);
  outline-offset: 2px;
}
.page-faq .faq-nav__item.is-current {
  border-left-color: var(--pulse);
  background: rgba(255, 107, 53, .08);
  color: var(--mist);
}
.page-faq .faq-nav__num {
  font-size: .75rem;
  color: var(--quiet);
  letter-spacing: .06em;
}
.page-faq .faq-nav__item.is-current .faq-nav__num {
  color: var(--pulse);
}
.page-faq .faq-nav__mark {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(195, 205, 214, .35);
  transition: background .22s var(--ease), box-shadow .22s var(--ease);
}
.page-faq .faq-nav__item.is-current .faq-nav__mark {
  background: var(--pulse);
  box-shadow: 0 0 0 4px rgba(255, 107, 53, .18);
}
.page-faq .faq-nav__text {
  display: grid;
  gap: 2px;
  min-width: 0;
}
.page-faq .faq-nav__label {
  font-size: .9375rem;
  font-weight: 600;
  line-height: 1.4;
}
.page-faq .faq-nav__sub {
  font-size: .6875rem;
  color: var(--quiet);
  letter-spacing: .05em;
}
.page-faq .faq-nav__tip {
  margin: 22px 4px 0;
  padding-left: 12px;
  border-left: 2px solid var(--faq-edge);
  font-size: .8125rem;
  line-height: 1.7;
  color: var(--quiet);
}
.page-faq .faq-nav__link {
  appearance: none;
  border: 0;
  background: none;
  padding: 0;
  font: inherit;
  color: var(--lake);
  cursor: default;
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 分类区块 ---------- */
.page-faq .faq-cat {
  padding: 0 0 46px;
}
.page-faq .faq-cat + .faq-cat {
  border-top: 1px solid var(--faq-rule);
  padding-top: 46px;
}
.page-faq .faq-cat__head {
  margin-bottom: 24px;
}
.page-faq .faq-cat__idx {
  display: inline-block;
  font-size: .8125rem;
  letter-spacing: .08em;
  color: var(--blue);
  padding: 3px 8px;
  border: 1px solid rgba(20, 112, 143, .45);
  border-radius: 6px;
}
.page-faq .faq-cat__title {
  margin: 14px 0 0;
  color: var(--mist);
}
.page-faq .faq-cat__sum {
  margin: 10px 0 0;
  max-width: 46em;
  font-size: .9375rem;
  line-height: 1.75;
  color: var(--quiet);
}

/* ---------- 手风琴 ---------- */
.page-faq .faq-cat__list {
  display: grid;
  gap: 10px;
}
.page-faq .faq-item {
  border: 1px solid var(--line-soft);
  border-radius: 12px;
  background: var(--faq-shell);
  overflow: hidden;
  transition: border-color .24s var(--ease), background .24s var(--ease);
}
.page-faq .faq-item:hover {
  border-color: var(--line);
}
.page-faq .faq-item[open] {
  border-color: var(--faq-edge);
  background: var(--faq-shell-open);
}
.page-faq .faq-item[hidden] {
  display: none;
}
.page-faq .faq-item__q {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr) 18px;
  align-items: start;
  gap: 12px;
  padding: 17px 20px;
  cursor: pointer;
  list-style: none;
  color: var(--mist);
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.55;
  transition: color .2s var(--ease);
}
.page-faq .faq-item__q::-webkit-details-marker {
  display: none;
}
.page-faq .faq-item__q:focus-visible {
  outline: 2px solid var(--lake);
  outline-offset: -2px;
}
.page-faq .faq-item__num {
  font-size: .75rem;
  font-weight: 400;
  letter-spacing: .06em;
  color: var(--quiet);
  padding-top: 3px;
}
.page-faq .faq-item[open] .faq-item__num {
  color: var(--lake);
}
.page-faq .faq-item__text {
  min-width: 0;
}
.page-faq .faq-item__icon {
  position: relative;
  width: 16px;
  height: 16px;
  margin-top: 4px;
  transition: transform .3s var(--ease);
}
.page-faq .faq-item__icon::before,
.page-faq .faq-item__icon::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: var(--lake);
  border-radius: 2px;
  transform: translate(-50%, -50%);
}
.page-faq .faq-item__icon::before {
  width: 16px;
  height: 2px;
}
.page-faq .faq-item__icon::after {
  width: 2px;
  height: 16px;
}
.page-faq .faq-item[open] .faq-item__icon {
  transform: rotate(45deg);
}
.page-faq .faq-item__a {
  margin: 0 20px 20px 72px;
  padding: 14px 0 2px 16px;
  border-left: 2px solid var(--lake);
  color: var(--silver);
  font-size: .9375rem;
  line-height: 1.8;
}
.page-faq .faq-item__a p {
  margin: 0;
}
.page-faq .faq-item__more {
  margin-top: 12px;
}
.page-faq .faq-item__more a {
  font-size: .8125rem;
  color: var(--quiet);
  text-decoration: none;
  border-bottom: 1px dashed rgba(147, 167, 179, .55);
  padding-bottom: 1px;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}
.page-faq .faq-item__more a:hover,
.page-faq .faq-item__more a:focus-visible {
  color: var(--pulse);
  border-color: rgba(255, 107, 53, .6);
}
.page-faq .faq-item__more a:focus-visible {
  outline: 2px solid var(--lake);
  outline-offset: 2px;
}

/* ---------- 移动端章节 ---------- */
.page-faq .faq-cat__body {
  display: grid;
  gap: 26px;
}
.page-faq .faq-cat__visual {
  position: relative;
  margin: 0;
  border-radius: 14px;
  overflow: hidden;
  border: 1px solid var(--line);
  transform: rotate(.9deg);
  align-self: start;
}
.page-faq .faq-cat__visual img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}
.page-faq .faq-cat__visual .note {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  margin: 0;
  padding: 14px 16px;
  font-size: .75rem;
  line-height: 1.6;
  color: var(--mist);
  background: linear-gradient(180deg, rgba(6, 26, 36, 0) 0%, rgba(6, 26, 36, .92) 78%);
}

/* ---------- 收尾 ---------- */
.page-faq .faq-help {
  padding: 0;
}
.page-faq .faq-help__panel {
  padding: 32px 24px;
  border-radius: 16px;
  border: 1px solid var(--line);
  background: linear-gradient(160deg, rgba(10, 75, 96, .55) 0%, rgba(14, 44, 56, .9) 62%);
}
.page-faq .faq-help__title {
  margin: 12px 0 0;
  color: var(--mist);
}
.page-faq .faq-help__lead {
  margin: 14px 0 0;
  max-width: 46em;
  font-size: .9375rem;
  line-height: 1.8;
  color: var(--silver);
}
.page-faq .faq-help__grid {
  display: grid;
  gap: 26px;
  margin-top: 30px;
}
.page-faq .faq-help__sub {
  margin: 0 0 12px;
  color: var(--mist);
}
.page-faq .faq-help__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 9px;
}
.page-faq .faq-help__list li {
  position: relative;
  padding-left: 18px;
  font-size: .9375rem;
  line-height: 1.7;
  color: var(--silver);
}
.page-faq .faq-help__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .62em;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--lake);
}
.page-faq .faq-help__list a {
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid rgba(46, 158, 134, .6);
  padding-bottom: 1px;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}
.page-faq .faq-help__list a:hover,
.page-faq .faq-help__list a:focus-visible {
  color: var(--lake);
  border-color: var(--lake);
}

/* ---------- 中等屏 ---------- */
@media (min-width: 760px) {
  .page-faq .faq-board__bar {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 22px;
  }
  .page-faq .faq-board__state {
    text-align: right;
    white-space: nowrap;
  }
  .page-faq .faq-help__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 34px;
  }
  .page-faq .faq-help__panel {
    padding: 40px 36px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero {
    padding: 36px 0 78px;
  }
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 52px;
  }
  .page-faq .faq-cat__body {
    grid-template-columns: 220px minmax(0, 1fr);
    gap: 32px;
    align-items: start;
  }
  .page-faq .faq-item__a {
    margin-left: 84px;
    font-size: 1rem;
  }
}

/* ---------- 桌面两栏 ---------- */
@media (min-width: 1080px) {
  .page-faq {
    padding-bottom: 110px;
  }
  .page-faq .faq-body {
    grid-template-columns: 224px minmax(0, 1fr);
    gap: 56px;
    margin-top: 62px;
    align-items: start;
  }
  .page-faq .faq-nav {
    position: sticky;
    top: calc(var(--header-h) + 28px);
  }
  .page-faq .faq-cat__title {
    font-size: var(--fs-sect);
  }
  .page-faq .faq-item__q {
    grid-template-columns: 44px minmax(0, 1fr) 18px;
    padding: 19px 24px;
    font-size: 1.0625rem;
  }
  .page-faq .faq-item__a {
    margin: 0 24px 22px 92px;
  }
}

/* ---------- 减少动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-hero__visual,
  .page-faq .faq-cat__visual {
    transform: none;
  }
  .page-faq .faq-item__icon,
  .page-faq .faq-nav__item,
  .page-faq .faq-item,
  .page-faq .faq-board__input {
    transition: none;
  }
}
</main>