.page-faq {
  --faq-rail-w: 236px;
  --faq-gap: 64px;
}

.page-faq img {
  max-width: 100%;
  height: auto;
}

.page-faq .crumbs {
  margin: 24px 0 0;
}

/* ---------- 首屏框景 ---------- */
.page-faq .faq-hero {
  position: relative;
  margin: 20px 0 0;
  padding: 30px 20px 38px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    radial-gradient(130% 150% at 90% -10%, rgba(52, 229, 192, 0.12) 0%, rgba(52, 229, 192, 0) 58%),
    linear-gradient(158deg, var(--panel) 0%, var(--ink-deep) 82%);
  overflow: hidden;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 8px;
  background-image: repeating-linear-gradient(90deg, var(--line) 0 1px, transparent 1px 26px);
  opacity: .85;
  pointer-events: none;
}

.page-faq .faq-hero__kicker {
  margin: 0;
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--cyan);
  text-transform: uppercase;
}

.page-faq .faq-hero__title {
  margin: 14px 0 18px;
  max-width: 24ch;
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(27px, 6vw, 48px);
  line-height: 1.2;
  letter-spacing: .01em;
  color: var(--white);
}

.page-faq .faq-hero__lede {
  margin: 0;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--text);
}

.page-faq .faq-hero__facts {
  list-style: none;
  margin: 30px 0 0;
  padding: 22px 0 0;
  border-top: 1px solid var(--line);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 20px 28px;
}

.page-faq .faq-hero__fact {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 6px;
}

.page-faq .faq-hero__fact .num {
  font-size: 34px;
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--white);
}

.page-faq .faq-hero__fact-label {
  width: 100%;
  font-size: 13px;
  letter-spacing: .02em;
  color: var(--muted);
}

/* ---------- 通栏氛围图 ---------- */
.page-faq .faq-banner {
  margin: 20px 0 0;
}

.page-faq .faq-banner .frame__media {
  aspect-ratio: 4 / 3;
  overflow: hidden;
}

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

/* ---------- 双栏主体 ---------- */
.page-faq .faq-shell {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
  align-items: start;
}

.page-faq .faq-rail {
  border-top: 2px solid var(--cyan);
  padding-top: 16px;
}

.page-faq .faq-rail__title {
  margin: 0 0 14px;
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--tick);
  text-transform: uppercase;
}

.page-faq .faq-rail__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
  border-left: 1px solid var(--line);
}

.page-faq .faq-rail__link {
  display: grid;
  grid-template-columns: 30px 9px 1fr;
  align-items: center;
  gap: 10px;
  margin-left: -1px;
  padding: 11px 10px 11px 14px;
  border-left: 2px solid transparent;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.5;
  text-decoration: none;
  transition: color .2s var(--ease), border-color .2s var(--ease), background-color .2s var(--ease);
}

.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  color: var(--text);
  border-left-color: var(--cyan);
  background-color: rgba(52, 229, 192, .06);
}

.page-faq .faq-rail__num {
  font-size: 11px;
  letter-spacing: .06em;
  color: var(--tick);
}

.page-faq .faq-rail__mark {
  display: block;
  width: 9px;
  height: 9px;
  border: 1px solid var(--tick);
  transition: background-color .2s var(--ease), border-color .2s var(--ease);
}

.page-faq .faq-rail__link:hover .faq-rail__mark,
.page-faq .faq-rail__link:focus-visible .faq-rail__mark {
  background-color: var(--cyan);
  border-color: var(--cyan);
}

.page-faq .faq-rail__note {
  margin: 18px 0 0;
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--tick);
}

/* ---------- 筛选条 ---------- */
.page-faq .faq-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 40px;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--line);
}

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  margin-bottom: 56px;
  scroll-margin-top: 110px;
}

.page-faq .faq-group:last-child {
  margin-bottom: 0;
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: baseline;
  gap: 4px 14px;
  padding: 18px 0 14px;
  border-top: 2px solid var(--cyan);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-group__num {
  grid-row: 1 / span 2;
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--cyan);
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--serif);
  font-weight: 600;
  font-size: 22px;
  letter-spacing: .01em;
  color: var(--white);
}

.page-faq .faq-group__note {
  margin: 0;
  font-size: 13px;
  color: var(--muted);
}

/* ---------- 手风琴 ---------- */
.page-faq .faq-item {
  border-bottom: 1px solid var(--line);
  scroll-margin-top: 110px;
  transition: background-color .24s var(--ease);
}

.page-faq .faq-item__q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 17px 4px;
  cursor: pointer;
  list-style: none;
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  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(--cyan);
}

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

.page-faq .faq-item__sign {
  position: relative;
  flex: 0 0 auto;
  width: 14px;
  height: 14px;
}

.page-faq .faq-item__sign::before,
.page-faq .faq-item__sign::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background-color: var(--cyan);
}

.page-faq .faq-item__sign::before {
  width: 14px;
  height: 1.5px;
  transform: translate(-50%, -50%);
}

.page-faq .faq-item__sign::after {
  width: 1.5px;
  height: 14px;
  transform: translate(-50%, -50%) scaleY(1);
  transition: transform .24s var(--ease);
}

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

.page-faq .faq-item[open] {
  background-image: linear-gradient(90deg, rgba(52, 229, 192, .07), rgba(52, 229, 192, 0) 74%);
  box-shadow: inset 2px 0 0 var(--cyan);
}

.page-faq .faq-item:target {
  background-image: linear-gradient(90deg, rgba(255, 107, 51, .08), rgba(255, 107, 51, 0) 74%);
  box-shadow: inset 2px 0 0 var(--orange);
}

.page-faq .faq-item__a {
  padding: 2px 34px 22px 4px;
}

.page-faq .faq-item[open] .faq-item__a {
  animation: faqRise .26s var(--ease) both;
}

.page-faq .faq-item__a p {
  margin: 0;
  max-width: 60ch;
  font-size: 15px;
  line-height: 1.88;
  color: var(--text);
}

.page-faq .faq-item__a a {
  color: var(--cyan);
}

@keyframes faqRise {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: none; }
}

/* ---------- 跳跃按钮 ---------- */
.page-faq .faq-group__jump {
  margin: 22px 0 0;
}

/* ---------- 账号同步旁注 ---------- */
.page-faq .faq-aside {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  margin-top: 26px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(150deg, var(--panel), var(--ink-deep));
}

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

.page-faq .faq-aside__fig .frame__media {
  aspect-ratio: 5 / 4;
  overflow: hidden;
}

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

.page-faq .faq-aside__tag {
  margin: 0 0 10px;
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--cyan);
}

.page-faq .faq-aside__text {
  margin: 0;
  max-width: 56ch;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--text);
}

.page-faq .faq-aside__link {
  display: inline-block;
  margin-top: 14px;
  color: var(--cyan);
  font-size: 14px;
  text-decoration: none;
  border-bottom: 1px solid var(--tick);
  transition: border-color .2s var(--ease);
}

.page-faq .faq-aside__link:hover,
.page-faq .faq-aside__link:focus-visible {
  border-bottom-color: var(--cyan);
}

/* ---------- 人工通道 ---------- */
.page-faq .faq-help__panel {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  padding: 30px 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    radial-gradient(110% 140% at 0% 0%, rgba(255, 107, 51, .11) 0%, rgba(255, 107, 51, 0) 58%),
    linear-gradient(150deg, var(--panel), var(--ink-deep));
}

.page-faq .faq-help__tag {
  margin: 0 0 12px;
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--orange);
}

.page-faq .faq-help__title {
  margin: 0 0 14px;
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(22px, 4.4vw, 30px);
  line-height: 1.3;
  color: var(--white);
}

.page-faq .faq-help__text {
  margin: 0;
  max-width: 56ch;
  font-size: 15px;
  line-height: 1.9;
  color: var(--text);
}

.page-faq .faq-help__list {
  margin: 0;
  display: grid;
  gap: 0;
}

.page-faq .faq-help__row {
  display: grid;
  gap: 5px;
  padding-bottom: 14px;
  margin-bottom: 14px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-help__row dt {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--tick);
  text-transform: uppercase;
}

.page-faq .faq-help__row dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--text);
  overflow-wrap: anywhere;
}

.page-faq .faq-help__channels .btn {
  margin-top: 4px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-faq .faq-hero {
    padding: 40px 36px 48px;
  }

  .page-faq .faq-banner .frame__media {
    aspect-ratio: 16 / 6;
  }

  .page-faq .faq-aside {
    grid-template-columns: 220px minmax(0, 1fr);
    align-items: center;
    gap: 26px;
    padding: 26px;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-shell {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
    gap: var(--faq-gap);
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 96px;
  }

  .page-faq .faq-hero__title {
    max-width: 22ch;
  }

  .page-faq .faq-item__q {
    padding: 19px 4px;
    font-size: 16.5px;
  }
}

@media (min-width: 1100px) {
  .page-faq .faq-help__panel {
    grid-template-columns: 1.15fr .85fr;
    align-items: start;
    gap: 56px;
    padding: 46px 42px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item[open] .faq-item__a {
    animation: none;
  }

  .page-faq .faq-item__sign::after,
  .page-faq .faq-rail__link,
  .page-faq .faq-rail__mark {
    transition: none;
  }
}