.page-faq {
  --faq-rail-w: 220px;
  --faq-radius-sm: 12px;
  --faq-shadow-soft: 0 26px 52px -44px rgba(0, 0, 0, 1);
}

.page-faq .faq-body__title {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: calc(var(--yd-header-h) + clamp(2rem, 6vw, 4.25rem)) 0 clamp(2.25rem, 6vw, 4.5rem);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: -18% -12% auto -12%;
  height: 78%;
  background:
    radial-gradient(58% 78% at 80% 16%, rgba(63, 224, 216, .14), transparent 70%),
    radial-gradient(52% 72% at 10% 4%, rgba(240, 194, 75, .12), transparent 74%);
  pointer-events: none;
  z-index: 0;
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.75rem, 5vw, 3rem);
  align-items: center;
}

.page-faq .faq-hero__title {
  margin: .7rem 0 0;
}

.page-faq .faq-hero__lede {
  margin: 1rem 0 0;
  max-width: 46ch;
}

.page-faq .faq-hero__actions {
  margin-top: 1.6rem;
}

.page-faq .faq-hero__note {
  margin: 1.1rem 0 0;
  font-size: .9rem;
}

.page-faq .faq-hero__figure {
  position: relative;
  margin: 0;
  border: 1px solid var(--yd-line);
  border-radius: var(--yd-radius);
  overflow: hidden;
  box-shadow: var(--yd-shadow);
}

.page-faq .faq-hero__figure::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(200deg, rgba(7, 11, 30, 0) 40%, rgba(7, 11, 30, .72) 100%);
  pointer-events: none;
}

.page-faq .faq-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 按主题进入 ---------- */
.page-faq .faq-topics__head {
  display: grid;
  gap: .75rem;
  max-width: 62ch;
  margin-bottom: clamp(1.5rem, 4vw, 2.5rem);
}

.page-faq .faq-topics__head .yd-text {
  margin: 0;
}

.page-faq .faq-topics__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: .9rem;
}

.page-faq .faq-topic {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: .35rem;
  padding: 1.2rem 1.2rem 1.3rem;
  border: 1px solid var(--yd-line);
  border-radius: var(--yd-radius);
  background:
    linear-gradient(158deg, rgba(22, 32, 74, .86) 0%, rgba(12, 19, 48, .62) 100%);
  color: inherit;
  text-decoration: none;
  box-shadow: var(--faq-shadow-soft);
  transition: transform .26s var(--yd-ease), border-color .26s var(--yd-ease), box-shadow .26s var(--yd-ease);
}

.page-faq .faq-topic::before {
  content: "";
  position: absolute;
  left: 1.2rem;
  right: 42%;
  top: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--yd-gold), rgba(240, 194, 75, 0));
  border-radius: var(--yd-pill);
}

.page-faq .faq-topic:hover,
.page-faq .faq-topic:focus-visible {
  transform: translateY(-4px);
  border-color: var(--yd-gold-line);
  box-shadow: var(--yd-shadow-lift);
  outline: none;
}

.page-faq .faq-topic__num {
  font-family: var(--yd-font-mono);
  font-size: 1.55rem;
  letter-spacing: .04em;
  color: var(--yd-gold);
}

.page-faq .faq-topic__label {
  font-size: 1.08rem;
  font-weight: 700;
  color: var(--yd-white);
}

.page-faq .faq-topic__desc {
  font-size: .9rem;
  line-height: 1.7;
  color: var(--yd-muted);
}

.page-faq .faq-topics__figure {
  margin: clamp(1.5rem, 4vw, 2.5rem) 0 0;
  border: 1px solid var(--yd-line);
  border-radius: var(--yd-radius);
  overflow: hidden;
}

.page-faq .faq-topics__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 双栏问答 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.5rem, 4vw, 2.75rem);
}

.page-faq .faq-rail__label {
  margin: 0 0 .7rem;
  font-size: 12px;
  letter-spacing: .24em;
  color: var(--yd-muted);
  text-transform: uppercase;
}

.page-faq .faq-rail__list {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-rail__list a {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .45rem .85rem;
  border: 1px solid var(--yd-line);
  border-radius: var(--yd-pill);
  font-size: .86rem;
  color: var(--yd-text);
  text-decoration: none;
  transition: border-color .22s var(--yd-ease), color .22s var(--yd-ease);
}

.page-faq .faq-rail__list a:hover,
.page-faq .faq-rail__list a:focus-visible {
  border-color: var(--yd-gold-line);
  color: var(--yd-white);
  outline: none;
}

.page-faq .faq-rail__idx {
  font-family: var(--yd-font-mono);
  font-size: .76rem;
  letter-spacing: .04em;
  color: var(--yd-cyan);
}

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

.page-faq .faq-group {
  position: relative;
  padding-top: 1.4rem;
}

.page-faq .faq-group + .faq-group {
  margin-top: clamp(2.5rem, 6vw, 4.25rem);
}

.page-faq .faq-group + .faq-group::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 14%;
  height: 1px;
  background: linear-gradient(90deg, var(--yd-gold-line), rgba(42, 55, 102, .4) 55%, transparent 100%);
  transform: skewY(-1.4deg);
}

.page-faq .faq-group__head {
  display: grid;
  gap: .5rem;
  margin-bottom: clamp(1rem, 3vw, 1.6rem);
}

.page-faq .faq-group__idx {
  font-family: var(--yd-font-mono);
  font-size: .8rem;
  letter-spacing: .06em;
  color: var(--yd-gold);
}

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

.page-faq .faq-group__lede {
  margin: 0;
  max-width: 64ch;
  font-size: .95rem;
  line-height: 1.85;
  color: var(--yd-muted);
}

.page-faq .faq-list {
  display: grid;
  gap: .45rem;
}

.page-faq .faq-item {
  border: 1px solid transparent;
  border-radius: var(--faq-radius-sm);
  transition: background-color .24s var(--yd-ease), border-color .24s var(--yd-ease);
}

.page-faq .faq-item:hover {
  border-color: var(--yd-line-soft);
}

.page-faq .faq-item[open] {
  background: rgba(22, 32, 74, .5);
  border-color: var(--yd-line);
}

.page-faq .faq-item__q {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.1rem;
  cursor: pointer;
  list-style: none;
  font-size: 1.02rem;
  font-weight: 600;
  line-height: 1.6;
  color: var(--yd-white);
}

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

.page-faq .faq-item__q::after {
  content: "";
  flex: none;
  width: 9px;
  height: 9px;
  margin-top: .5rem;
  border-right: 2px solid var(--yd-cyan);
  border-bottom: 2px solid var(--yd-cyan);
  transform: rotate(45deg);
  transition: transform .26s var(--yd-ease);
}

.page-faq .faq-item[open] .faq-item__q::after {
  transform: rotate(225deg);
}

.page-faq .faq-item__q:focus-visible {
  outline: 2px solid var(--yd-gold);
  outline-offset: -2px;
  border-radius: var(--faq-radius-sm);
}

.page-faq .faq-item__a {
  margin: 0 1.1rem 1.1rem 1.1rem;
  padding-left: 1rem;
  border-left: 2px solid var(--yd-gold-line);
}

.page-faq .faq-item__a p {
  margin: 0;
  font-size: .95rem;
  line-height: 1.85;
  color: var(--yd-muted);
}

.page-faq .faq-group__link {
  margin: 1.25rem 0 0;
  font-size: .92rem;
}

.page-faq .faq-group__link a {
  color: var(--yd-cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--yd-cyan-line);
  padding-bottom: 2px;
}

.page-faq .faq-group__link a:hover,
.page-faq .faq-group__link a:focus-visible {
  color: var(--yd-gold-soft);
  border-bottom-color: var(--yd-gold-line);
  outline: none;
}

/* ---------- 还是没解决 ---------- */
.page-faq .faq-help {
  position: relative;
  margin-top: clamp(3rem, 8vw, 6rem);
  padding: clamp(3.5rem, 10vw, 8rem) 0 clamp(4rem, 10vw, 7.5rem);
  background:
    radial-gradient(120% 96% at 50% 0%, rgba(22, 32, 74, .9), rgba(7, 11, 30, 0) 72%);
  overflow: hidden;
}

.page-faq .faq-help::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 18%;
  height: 1px;
  background: linear-gradient(90deg, var(--yd-cyan-line), rgba(42, 55, 102, .35) 60%, transparent 100%);
  transform: skewY(1.2deg);
}

.page-faq .faq-help__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(2rem, 5vw, 3.5rem);
  align-items: start;
}

.page-faq .faq-help__title {
  margin: .7rem 0 1rem;
}

.page-faq .faq-help__text {
  margin: 0;
  max-width: 44ch;
}

.page-faq .faq-help__actions {
  margin-top: 1.6rem;
}

.page-faq .faq-help__cards {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1rem;
}

.page-faq .faq-help__card {
  padding: 1.2rem 1.25rem 1.35rem;
  border: 1px solid var(--yd-line);
  border-radius: var(--yd-radius);
  background: linear-gradient(160deg, rgba(12, 19, 48, .9), rgba(7, 11, 30, .62));
}

.page-faq .faq-help__card-label {
  margin: 0 0 .55rem;
  font-size: 12px;
  letter-spacing: .22em;
  color: var(--yd-muted);
}

.page-faq .faq-help__card-value {
  margin: 0;
  font-family: var(--yd-font-mono);
  font-size: clamp(.95rem, 2.6vw, 1.1rem);
  letter-spacing: .04em;
  color: var(--yd-gold);
  word-break: break-word;
}

.page-faq .faq-help__card-note {
  margin: .7rem 0 0;
  font-size: .88rem;
  line-height: 1.8;
  color: var(--yd-muted);
}

.page-faq .faq-help__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: .6rem;
}

.page-faq .faq-help__list li {
  position: relative;
  padding-left: 1.1rem;
  font-size: .92rem;
  line-height: 1.8;
  color: var(--yd-text);
}

.page-faq .faq-help__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .72em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--yd-cyan);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-topics__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-help__cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-help__card--list {
    grid-column: 1 / -1;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    gap: clamp(2rem, 5vw, 4.5rem);
  }

  .page-faq .faq-help__inner {
    grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr);
    gap: clamp(2.5rem, 6vw, 4.5rem);
  }
}

@media (min-width: 960px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
    gap: clamp(2rem, 5vw, 4rem);
  }

  .page-faq .faq-rail {
    position: sticky;
    top: calc(var(--yd-header-h) + 1.75rem);
    align-self: start;
    padding-left: 1rem;
    border-left: 1px solid var(--yd-line);
  }

  .page-faq .faq-rail__list {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: .15rem;
  }

  .page-faq .faq-rail__list a {
    border: 0;
    border-left: 2px solid transparent;
    border-radius: 0;
    padding: .5rem 0 .5rem .85rem;
    margin-left: -1.1rem;
    font-size: .9rem;
  }

  .page-faq .faq-rail__list a:hover,
  .page-faq .faq-rail__list a:focus-visible {
    border-left-color: var(--yd-gold);
    color: var(--yd-white);
  }
}

@media (min-width: 1120px) {
  .page-faq .faq-topics__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-topic,
  .page-faq .faq-item,
  .page-faq .faq-item__q::after,
  .page-faq .faq-rail__list a {
    transition: none;
  }

  .page-faq .faq-topic:hover,
  .page-faq .faq-topic:focus-visible {
    transform: none;
  }
}