.page-faq {
  display: block;
  padding-bottom: clamp(48px, 8vw, 96px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  border-bottom: 1px solid var(--line);
  overflow: hidden;
  background:
    radial-gradient(110% 120% at 88% -10%, rgba(18, 196, 139, .16), transparent 58%),
    radial-gradient(90% 100% at 2% 120%, rgba(242, 179, 28, .10), transparent 60%),
    linear-gradient(180deg, var(--bg-deep), var(--bg));
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: .32;
  background-image:
    linear-gradient(to right, rgba(30, 59, 84, .5) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(30, 59, 84, .5) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: linear-gradient(180deg, #000, transparent 76%);
  mask-image: linear-gradient(180deg, #000, transparent 76%);
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
  padding-top: clamp(22px, 4vw, 40px);
  padding-bottom: clamp(30px, 5vw, 58px);
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 3vw, 40px);
  margin-top: clamp(20px, 3vw, 34px);
}

.page-faq .faq-hero__eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--gold);
}

.page-faq .faq-hero h1 {
  margin: 14px 0 0;
  max-width: 24ch;
  font-size: clamp(29px, 5.2vw, 52px);
  font-weight: 800;
  line-height: 1.14;
  letter-spacing: -.02em;
  color: var(--white);
}

.page-faq .faq-hero .lead {
  margin: 18px 0 0;
  max-width: 58ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--muted);
}

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

.page-faq .faq-hero__stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-faq .faq-hero__stats .stat {
  display: grid;
  gap: 6px;
  padding: 16px 12px;
  background: var(--panel);
}

.page-faq .faq-hero__stats .stat__num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(20px, 3vw, 28px);
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--gold);
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-hero__stats .stat__label {
  font-size: 12px;
  line-height: 1.5;
  color: var(--muted);
}

/* ---------- 双栏骨架 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 3.5vw, 44px);
  padding-top: clamp(32px, 5vw, 56px);
}

/* ---------- 分类导航 ---------- */
.page-faq .faq-nav__head {
  margin-bottom: 20px;
}

.page-faq .faq-nav__head h2 {
  margin: 0 0 10px;
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 800;
  letter-spacing: -.02em;
  color: var(--white);
}

.page-faq .faq-nav__head p {
  margin: 0;
  max-width: 64ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .faq-nav__figure,
.page-faq .faq-figure {
  margin: 0 0 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  overflow: hidden;
}

.page-faq .faq-nav__figure .figure__media,
.page-faq .faq-figure .figure__media {
  margin: 0;
  overflow: hidden;
}

.page-faq .faq-nav__figure img,
.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

.page-faq .faq-nav__figure .figure__caption,
.page-faq .faq-figure .figure__caption {
  padding: 10px 14px;
  border-top: 1px solid var(--line);
  font-size: 12px;
  line-height: 1.65;
  color: var(--muted);
}

.page-faq .faq-cards {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-faq .faq-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-height: 146px;
  padding: 18px 16px 16px;
  border-left: 2px solid transparent;
  background: var(--panel);
  color: inherit;
  text-decoration: none;
  transition: background .22s var(--ease), border-color .22s var(--ease);
}

.page-faq .faq-card:hover,
.page-faq .faq-card:focus-visible {
  background: var(--panel-hi);
  border-left-color: var(--green);
}

.page-faq .faq-card:focus-visible {
  outline: 1px solid var(--cyan);
  outline-offset: -2px;
}

.page-faq .faq-card__num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 26px;
  line-height: 1;
  letter-spacing: -.03em;
  color: var(--gold);
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-card__title {
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -.01em;
  color: var(--white);
}

.page-faq .faq-card__text {
  font-size: 13px;
  line-height: 1.65;
  color: var(--muted);
}

.page-faq .faq-card__count {
  margin-top: auto;
  padding-top: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--cyan);
}

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  margin-top: clamp(34px, 5vw, 52px);
  padding-top: clamp(22px, 3vw, 30px);
  border-top: 1px solid var(--line);
  scroll-margin-top: 96px;
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 14px;
  align-items: start;
}

.page-faq .faq-group__num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 30px;
  line-height: .95;
  letter-spacing: -.04em;
  color: var(--gold);
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-group__title {
  margin: 0;
  font-size: clamp(19px, 2.4vw, 24px);
  font-weight: 800;
  letter-spacing: -.02em;
  color: var(--white);
}

.page-faq .faq-group__sum {
  margin: 8px 0 0;
  max-width: 56ch;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

.page-faq .faq-group__count {
  padding: 5px 9px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-deep);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--muted);
  white-space: nowrap;
}

.page-faq .faq-list {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-faq .faq-item {
  background: var(--panel);
  border-left: 2px solid transparent;
  transition: background .22s var(--ease), border-color .22s var(--ease);
}

.page-faq .faq-item[open] {
  background: var(--panel-hi);
  border-left-color: var(--green);
}

.page-faq .faq-item__q {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px 18px;
  list-style: none;
  cursor: pointer;
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--text);
  -webkit-tap-highlight-color: transparent;
  transition: color .2s var(--ease);
}

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

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

.page-faq .faq-item__q:focus-visible {
  outline: 1px solid var(--cyan);
  outline-offset: -2px;
}

.page-faq .faq-item__mark {
  position: relative;
  flex: 0 0 auto;
  width: 16px;
  height: 16px;
  margin-top: 4px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-deep);
  transition: border-color .22s var(--ease);
}

.page-faq .faq-item__mark::before,
.page-faq .faq-item__mark::after {
  content: "";
  position: absolute;
  background: var(--muted);
  transition: transform .24s var(--ease), background .24s var(--ease);
}

.page-faq .faq-item__mark::before {
  left: 3px;
  right: 3px;
  top: 50%;
  height: 1px;
  transform: translateY(-50%);
}

.page-faq .faq-item__mark::after {
  top: 3px;
  bottom: 3px;
  left: 50%;
  width: 1px;
  transform: translateX(-50%);
}

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

.page-faq .faq-item[open] .faq-item__mark::before {
  background: var(--green);
}

.page-faq .faq-item[open] .faq-item__mark::after {
  background: var(--green);
  transform: translateX(-50%) scaleY(0);
}

.page-faq .faq-item__body {
  display: grid;
  gap: 12px;
  padding: 0 18px 18px 46px;
}

.page-faq .faq-item__row {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--muted);
}

.page-faq .faq-item__row a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(56, 198, 224, .35);
}

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

.page-faq .faq-item__k {
  display: block;
  margin-bottom: 3px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--gold);
}

.page-faq .faq-item__k--cause {
  color: var(--orange);
}

.page-faq .faq-item__k--next {
  color: var(--green);
}

.page-faq .faq-figure {
  margin: 20px 0 0;
}

/* ---------- 侧栏 ---------- */
.page-faq .faq-rail {
  display: grid;
  gap: 16px;
  align-content: start;
}

.page-faq .faq-rail__meter {
  padding: 16px 16px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, var(--panel-hi), var(--panel));
  box-shadow: 0 14px 34px rgba(0, 0, 0, .3), inset 0 1px 0 rgba(255, 255, 255, .03);
}

.page-faq .faq-rail__cap {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--gold);
}

.page-faq .faq-rail__fields {
  display: grid;
  gap: 10px;
  margin: 0;
}

.page-faq .faq-rail__field {
  display: grid;
  gap: 2px;
  padding-left: 10px;
  border-left: 2px solid var(--line);
}

.page-faq .faq-rail__field:nth-child(1) {
  border-left-color: var(--gold);
}

.page-faq .faq-rail__field:nth-child(2) {
  border-left-color: var(--orange);
}

.page-faq .faq-rail__field:nth-child(3) {
  border-left-color: var(--cyan);
}

.page-faq .faq-rail__field:nth-child(4) {
  border-left-color: var(--green);
}

.page-faq .faq-rail__field dt {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--white);
}

.page-faq .faq-rail__field dd {
  margin: 0;
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
}

.page-faq .faq-rail__small {
  margin: 12px 0 0;
  font-size: 12px;
  line-height: 1.7;
  color: var(--muted);
}

.page-faq .faq-rail__contact {
  display: grid;
  gap: 10px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
}

.page-faq .faq-rail__contact .faq-rail__cap {
  margin: 0;
}

.page-faq .faq-rail__contact .faq-rail__small {
  margin: 0;
}

.page-faq .faq-rail__contact .btn {
  justify-self: start;
}

/* ---------- 响应式 ---------- */
@media (min-width: 560px) {
  .page-faq .faq-cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 560px) {
  .page-faq .faq-group__head {
    gap: 10px;
  }

  .page-faq .faq-group__num {
    font-size: 24px;
  }

  .page-faq .faq-group__count {
    padding: 4px 7px;
    font-size: 11px;
  }

  .page-faq .faq-item__q {
    padding: 14px 14px;
    font-size: 15px;
  }

  .page-faq .faq-item__body {
    padding: 0 14px 16px 14px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, .9fr);
    align-items: end;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-layout {
    grid-template-columns: minmax(0, 1fr) 272px;
    gap: 44px;
    align-items: start;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 88px;
  }
}

@media (min-width: 1180px) {
  .page-faq .faq-cards {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

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