.page-faq {
  display: block;
  background: var(--c-mist);
  color: var(--c-ink);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: 22px 0 52px;
  background: var(--c-night);
  color: var(--c-mist);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: 0 0 0 auto;
  width: 62%;
  z-index: -1;
  pointer-events: none;
  background: linear-gradient(155deg, rgba(31, 122, 90, .42), rgba(11, 43, 34, 0) 66%);
  clip-path: polygon(36% 0, 100% 0, 100% 100%, 0 100%);
}

.page-faq .faq-hero .container {
  position: relative;
  z-index: 1;
}

.page-faq .breadcrumbs__link {
  color: rgba(242, 244, 243, .68);
}

.page-faq .breadcrumbs__item[aria-current="page"] .breadcrumbs__link {
  color: var(--c-orange-soft);
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
  margin-top: 26px;
}

.page-faq .faq-hero h1 {
  margin: 14px 0 0;
  font-size: clamp(32px, 5.6vw, 58px);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -.02em;
  color: #fff;
}

.page-faq .faq-hero .lede {
  margin: 18px 0 0;
  max-width: 34em;
  font-size: 16px;
  line-height: 1.8;
  color: rgba(242, 244, 243, .78);
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.page-faq .faq-hero__actions .btn--ghost {
  color: var(--c-mist);
  border-color: rgba(242, 244, 243, .42);
  background: rgba(242, 244, 243, .06);
}

.page-faq .faq-hero__media {
  margin: 0;
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid rgba(200, 210, 220, .26);
  background: var(--c-home);
  box-shadow: var(--shadow-float);
}

.page-faq .faq-hero__media img {
  display: block;
  width: 100%;
  height: clamp(200px, 36vw, 400px);
  object-fit: cover;
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-body {
  padding: 44px 0 72px;
}

.page-faq .faq-body__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
}

/* ---------- 左侧分组索引 ---------- */
.page-faq .faq-rail__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--c-mute);
}

.page-faq .faq-rail__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 10px;
  list-style: none;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

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

.page-faq .faq-rail__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border: 1px solid var(--c-steel);
  border-radius: var(--r-pill);
  background: #fff;
  color: var(--c-ink);
  font-size: 13px;
  font-weight: 600;
  text-decoration: none;
  white-space: nowrap;
  transition: background-color .2s var(--ease), border-color .2s var(--ease), color .2s var(--ease);
}

.page-faq .faq-rail__link:hover {
  border-color: var(--c-line);
  color: var(--c-home);
}

.page-faq .faq-rail__link[aria-current="true"] {
  background: var(--c-home);
  border-color: var(--c-home);
  color: #fff;
}

.page-faq .faq-rail__num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .06em;
  opacity: .72;
}

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  padding-top: 34px;
  margin-top: 34px;
  border-top: 1px solid var(--c-steel);
  scroll-margin-top: 108px;
}

.page-faq .faq-main > .faq-group:first-child {
  margin-top: 0;
  padding-top: 0;
  border-top: 0;
}

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 12px 14px;
}

.page-faq .faq-group__num {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .1em;
  padding: 3px 9px;
  border: 1px solid rgba(255, 106, 19, .4);
  border-radius: var(--r-pill);
  color: var(--c-orange);
  background: rgba(255, 178, 94, .12);
}

.page-faq .faq-group__title {
  margin: 0;
  font-size: clamp(21px, 3.2vw, 31px);
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: -.015em;
  color: var(--c-ink);
}

.page-faq .faq-group__count {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--c-mute);
}

.page-faq .faq-group__lede {
  margin: 12px 0 0;
  max-width: 56ch;
  font-size: 15px;
  line-height: 1.78;
  color: rgba(14, 26, 36, .76);
}

.page-faq .faq-group__media {
  margin: 20px 0 4px;
  border-radius: var(--r-md);
  overflow: hidden;
  background: var(--c-home);
}

.page-faq .faq-group__media img {
  display: block;
  width: 100%;
  height: clamp(150px, 22vw, 208px);
  object-fit: cover;
}

/* ---------- 手风琴 ---------- */
.page-faq .faq-group__list {
  margin-top: 18px;
  border-top: 1px solid var(--c-steel);
}

.page-faq .faq-item {
  border-bottom: 1px solid var(--c-steel);
}

.page-faq .faq-item__q {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  padding: 16px 2px;
  cursor: pointer;
  list-style: none;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.6;
  color: var(--c-ink);
  transition: color .2s var(--ease);
}

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

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

.page-faq .faq-item__q:hover {
  color: var(--c-home);
}

.page-faq .faq-item__q:focus-visible {
  outline: 2px solid var(--c-orange);
  outline-offset: 2px;
  border-radius: 4px;
}

.page-faq .faq-item__sign {
  position: relative;
  flex: 0 0 auto;
  width: 24px;
  height: 24px;
  margin-top: 3px;
  border: 1px solid var(--c-line);
  border-radius: 50%;
  transition: background-color .2s var(--ease), border-color .2s var(--ease);
}

.page-faq .faq-item__sign::before,
.page-faq .faq-item__sign::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 10px;
  height: 1.5px;
  background: var(--c-line);
  transform: translate(-50%, -50%);
  transition: transform .22s var(--ease), background-color .2s var(--ease);
}

.page-faq .faq-item__sign::after {
  transform: translate(-50%, -50%) rotate(90deg);
}

.page-faq .faq-item[open] .faq-item__sign {
  background: var(--c-orange);
  border-color: var(--c-orange);
}

.page-faq .faq-item[open] .faq-item__sign::before,
.page-faq .faq-item[open] .faq-item__sign::after {
  background: #fff;
}

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

.page-faq .faq-item__a {
  margin: 0 0 16px;
  padding: 14px 16px;
  background: var(--c-ash);
  border-left: 3px solid var(--c-line);
  border-radius: 0 var(--r-md) var(--r-md) 0;
}

.page-faq .faq-item[open] .faq-item__a {
  animation: faq-answer-in .24s var(--ease) both;
}

@keyframes faq-answer-in {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.page-faq .faq-item__a p {
  margin: 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.78;
  color: rgba(14, 26, 36, .84);
}

.page-faq .faq-item__a a {
  color: var(--c-home);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-item__a a:hover {
  color: var(--c-orange);
}

/* ---------- 收尾 ---------- */
.page-faq .faq-outro {
  display: grid;
  gap: 18px;
  margin-top: 46px;
  padding: 26px 22px;
  border-radius: var(--r-lg);
  background: linear-gradient(140deg, var(--c-night), var(--c-home));
  color: var(--c-mist);
}

.page-faq .faq-outro__title {
  margin: 0;
  font-size: clamp(19px, 2.6vw, 25px);
  font-weight: 900;
  letter-spacing: -.015em;
  color: #fff;
}

.page-faq .faq-outro__text {
  margin: 10px 0 0;
  max-width: 46ch;
  font-size: 15px;
  line-height: 1.78;
  color: rgba(242, 244, 243, .78);
}

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

.page-faq .faq-outro__actions .btn--ghost {
  color: var(--c-mist);
  border-color: rgba(242, 244, 243, .42);
  background: rgba(242, 244, 243, .06);
}

/* ---------- 断点 ---------- */
@media (min-width: 700px) {
  .page-faq .faq-item__q {
    font-size: 17px;
    padding: 18px 2px;
  }

  .page-faq .faq-outro {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    padding: 30px 30px;
  }
}

@media (min-width: 880px) {
  .page-faq .faq-hero {
    padding: 24px 0 74px;
  }

  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, 1fr);
    gap: 52px;
    align-items: center;
    margin-top: 36px;
  }

  .page-faq .faq-hero .lede {
    font-size: 17px;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-body {
    padding: 74px 0 96px;
  }

  .page-faq .faq-body__grid {
    grid-template-columns: var(--rail) minmax(0, 1fr);
    gap: 64px;
    align-items: start;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 108px;
  }

  .page-faq .faq-rail__title {
    padding-left: 18px;
  }

  .page-faq .faq-rail__list {
    flex-direction: column;
    gap: 0;
    padding: 0;
    overflow: visible;
    border-left: 1px solid var(--c-steel);
  }

  .page-faq .faq-rail__item {
    display: block;
  }

  .page-faq .faq-rail__link {
    position: relative;
    display: flex;
    width: 100%;
    padding: 10px 6px 10px 18px;
    border: 0;
    border-radius: 0;
    background: transparent;
    font-size: 14px;
    white-space: normal;
  }

  .page-faq .faq-rail__link::before {
    content: "";
    position: absolute;
    left: -1px;
    top: 50%;
    width: 2px;
    height: 0;
    background: var(--c-orange);
    transform: translateY(-50%);
    transition: height .22s var(--ease);
  }

  .page-faq .faq-rail__link:hover {
    color: var(--c-home);
  }

  .page-faq .faq-rail__link[aria-current="true"] {
    background: transparent;
    color: var(--c-home);
    font-weight: 700;
  }

  .page-faq .faq-rail__link[aria-current="true"]::before {
    height: 72%;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-rail__link,
  .page-faq .faq-rail__link::before,
  .page-faq .faq-item__q,
  .page-faq .faq-item__sign,
  .page-faq .faq-item__sign::before,
  .page-faq .faq-item__sign::after {
    transition: none;
  }

  .page-faq .faq-item[open] .faq-item__a {
    animation: none;
  }
}