.page-faq {
  --faq-line: rgba(140, 154, 174, .26);
  --faq-line-strong: rgba(140, 154, 174, .42);
  padding-top: 26px;
  padding-bottom: clamp(48px, 7vw, 96px);
  background: var(--night);
  color: var(--text);
}

.page-faq .faq-crumbs {
  margin-bottom: clamp(24px, 3.6vw, 44px);
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
}

.page-faq .faq-hero__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 48px);
  align-items: start;
}

.page-faq .faq-hero__title {
  margin: 14px 0 20px;
  font-family: var(--serif);
  font-weight: 900;
  font-size: clamp(30px, 4.8vw, 58px);
  line-height: 1.06;
  letter-spacing: -0.012em;
  color: var(--paper);
  max-width: 17ch;
}

.page-faq .faq-hero__lede {
  max-width: 56ch;
}

.page-faq .faq-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px 20px;
  margin: clamp(26px, 4vw, 44px) 0 0;
  padding: 0;
}

.page-faq .faq-stat {
  margin: 0;
  border-top: 1px solid var(--steel);
  padding-top: 12px;
}

.page-faq .faq-stat__k {
  margin: 0;
  font-family: var(--sans);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--slate);
}

.page-faq .faq-stat__v {
  margin: 8px 0 0;
  font-family: var(--mono);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  font-size: clamp(22px, 2.8vw, 32px);
  line-height: 1;
  color: var(--lime);
}

.page-faq .faq-stat__v span {
  margin-left: 5px;
  font-family: var(--sans);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: .04em;
  color: var(--slate);
}

.page-faq .faq-hero__media {
  position: relative;
}

.page-faq .faq-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  clip-path: var(--cut);
  object-fit: cover;
}

/* ---------- 主体分栏 ---------- */

.page-faq .faq-body {
  margin-top: clamp(52px, 8vw, 104px);
}

.page-faq .faq-body__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 40px);
}

.page-faq .faq-index {
  display: none;
}

.page-faq .faq-index__no {
  margin-right: 9px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--cyan);
}

/* ---------- 筛选 ---------- */

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

.page-faq .m6-filter {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding-bottom: 14px;
  margin-bottom: 4px;
  border-bottom: 1px solid var(--faq-line-strong);
}

.page-faq .m6-filter__btn {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .06em;
}

.page-faq .m6-filter__btn:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-faq .m6-filter__count {
  margin-left: auto;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--slate);
}

.page-faq .m6-filter__empty {
  margin: 0;
  padding: 22px 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--slate);
  border-bottom: 1px solid var(--faq-line);
}

.page-faq [data-filter-item][hidden] {
  display: none;
}

/* ---------- 问题分组 ---------- */

.page-faq .faq-group {
  padding: clamp(26px, 3.4vw, 40px) 0 6px;
  border-top: 1px solid var(--faq-line);
  scroll-margin-top: calc(var(--bar-h) + 34px);
}

.page-faq #faq-list > .faq-group:first-child {
  border-top: 0;
  padding-top: clamp(20px, 2.6vw, 30px);
}

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 6px;
}

.page-faq .faq-group__no {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--orange);
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--serif);
  font-weight: 900;
  font-size: clamp(20px, 2.6vw, 30px);
  line-height: 1.22;
  color: var(--paper);
}

/* ---------- 折叠问题 ---------- */

.page-faq .m6-fold {
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .m6-fold__btn {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  width: 100%;
  padding: 18px 4px;
  background: none;
  border: 0;
  color: var(--text);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  text-align: left;
  cursor: pointer;
  transition: color .22s var(--ease);
}

.page-faq .m6-fold__btn:hover {
  color: var(--cyan);
}

.page-faq .m6-fold__btn[aria-expanded="true"] {
  color: var(--paper);
}

.page-faq .m6-fold__btn:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-faq .faq-fold__mk {
  position: relative;
  flex: 0 0 auto;
  width: 18px;
  height: 18px;
  margin-top: 5px;
}

.page-faq .faq-fold__mk::before,
.page-faq .faq-fold__mk::after {
  content: "";
  position: absolute;
  background: var(--cyan);
  transition: transform .22s var(--ease), opacity .22s var(--ease), background .22s var(--ease);
}

.page-faq .faq-fold__mk::before {
  left: 8px;
  top: 0;
  width: 2px;
  height: 18px;
}

.page-faq .faq-fold__mk::after {
  left: 0;
  top: 8px;
  width: 18px;
  height: 2px;
}

.page-faq .m6-fold__btn[aria-expanded="true"] .faq-fold__mk::before {
  transform: scaleY(0);
  opacity: 0;
}

.page-faq .m6-fold__btn[aria-expanded="true"] .faq-fold__mk::after {
  background: var(--orange);
}

.page-faq .faq-fold__q {
  flex: 1 1 auto;
  min-width: 0;
}

.page-faq .m6-fold__panel {
  position: relative;
  padding: 0 0 26px 34px;
}

.page-faq .m6-fold__panel::before {
  content: "";
  position: absolute;
  left: 9px;
  top: 2px;
  bottom: 28px;
  width: 1px;
  background: linear-gradient(180deg, var(--cyan), rgba(56, 242, 224, 0));
  opacity: .55;
}

.page-faq .m6-fold__panel p {
  margin: 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--slate);
}

.page-faq .m6-fold__panel a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(56, 242, 224, .45);
}

.page-faq .m6-fold__panel a:hover {
  border-bottom-color: var(--cyan);
}

.page-faq .faq-k {
  font-family: var(--mono);
  font-weight: 500;
  font-variant-numeric: tabular-nums;
  color: var(--lime);
}

/* ---------- 联系引导 ---------- */

.page-faq .faq-help {
  margin-top: clamp(60px, 9vw, 116px);
  padding: clamp(38px, 5.5vw, 72px) 0;
  background:
    radial-gradient(120% 90% at 8% 0%, rgba(56, 242, 224, .09), transparent 62%),
    var(--cabin);
  border-top: 1px solid var(--steel);
  border-bottom: 1px solid var(--steel);
}

.page-faq .faq-help__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 52px);
  align-items: center;
}

.page-faq .faq-help__media img {
  display: block;
  width: 100%;
  height: auto;
  clip-path: var(--cut);
  object-fit: cover;
}

.page-faq .faq-help__title {
  margin: 12px 0 16px;
  font-family: var(--serif);
  font-weight: 900;
  font-size: clamp(24px, 3.2vw, 38px);
  line-height: 1.16;
  color: var(--paper);
}

.page-faq .faq-help__body {
  margin: 0 0 24px;
  max-width: 56ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--text);
}

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

.page-faq .faq-help__item {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 14px;
  padding: 12px 0;
  border-top: 1px solid var(--faq-line);
}

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

.page-faq .faq-help__k {
  flex: 0 0 auto;
  min-width: 78px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--slate);
}

.page-faq .faq-help__v {
  font-family: var(--mono);
  font-size: 15px;
  font-variant-numeric: tabular-nums;
  color: var(--cyan);
  word-break: break-word;
}

.page-faq .faq-help__tip {
  margin: 0 0 26px;
  max-width: 58ch;
  font-size: 14px;
  line-height: 1.8;
  color: var(--slate);
}

.page-faq .faq-help__tip a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(56, 242, 224, .45);
}

.page-faq .faq-help__tip a:hover {
  border-bottom-color: var(--cyan);
}

.page-faq .faq-help__cta {
  display: inline-block;
}

.page-faq .faq-help__cta:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

/* ---------- 响应式 ---------- */

@media (min-width: 620px) {
  .page-faq .faq-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-faq .faq-help__inner {
    grid-template-columns: minmax(0, .78fr) minmax(0, 1.22fr);
  }
}

@media (min-width: 980px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.16fr) minmax(0, .84fr);
    align-items: end;
    gap: clamp(36px, 5vw, 64px);
  }
}

@media (min-width: 960px) {
  .page-faq .faq-body__grid {
    grid-template-columns: 220px minmax(0, 1fr);
    gap: clamp(40px, 5vw, 68px);
  }

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

  .page-faq .faq-index__stick {
    position: sticky;
    top: calc(var(--bar-h) + 28px);
  }

  .page-faq .faq-index .m6-rail {
    display: block;
    margin-top: 14px;
  }
}

@media (max-width: 959px) {
  .page-faq .faq-group__title {
    font-size: clamp(19px, 4.6vw, 24px);
  }

  .page-faq .m6-fold__btn {
    font-size: 15px;
    padding: 16px 2px;
  }

  .page-faq .m6-fold__panel {
    padding-left: 28px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .m6-fold__btn,
  .page-faq .faq-fold__mk::before,
  .page-faq .faq-fold__mk::after {
    transition: none;
  }
}