.page-faq {
  --faq-rail: 236px;
  --faq-gap: clamp(1.75rem, 4vw, 3.5rem);
  --faq-q-size: clamp(1rem, 0.94rem + 0.3vw, 1.15rem);
  background: var(--frost);
  color: var(--graphite);
  font-family: var(--font-sans);
  overflow-x: clip;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(1.25rem, 3.5vw, 2.5rem) 0 0;
  color: var(--frost);
  background:
    radial-gradient(120% 92% at 84% 6%, rgba(232, 163, 61, 0.22) 0%, rgba(232, 163, 61, 0) 58%),
    linear-gradient(168deg, var(--ink) 0%, var(--indigo) 66%, #243757 100%);
  overflow: hidden;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(232, 163, 61, 0.55), transparent);
}

.page-faq .crumb--ondark .crumb__link {
  color: var(--silver);
}

.page-faq .crumb--ondark .crumb__link:hover {
  color: var(--amber);
}

.page-faq .crumb--ondark .crumb__current {
  color: var(--frost);
}

.page-faq .faq-hero__inner {
  max-width: 46rem;
  padding: clamp(1.5rem, 4vw, 2.75rem) 0 clamp(1.5rem, 4vw, 2.5rem);
}

.page-faq .faq-hero__eyebrow {
  color: var(--amber);
}

.page-faq .faq-hero__title {
  margin: 0.7rem 0 0;
  font-size: clamp(1.85rem, 1.15rem + 3.4vw, 3.35rem);
  font-weight: 800;
  line-height: 1.14;
  letter-spacing: -0.02em;
  color: #fff;
}

.page-faq .faq-hero__lede {
  margin: 1.1rem 0 0;
  max-width: 40rem;
  color: rgba(244, 246, 248, 0.78);
  line-height: 1.8;
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.6rem;
}

.page-faq .faq-hero__media {
  margin: 0 0 clamp(1.5rem, 4vw, 2.5rem);
}

.page-faq .faq-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  border-radius: var(--r-lg);
  border: 1px solid rgba(170, 180, 192, 0.2);
  object-fit: cover;
}

/* ---------- 主体布局 ---------- */
.page-faq .faq-body {
  padding: clamp(2rem, 5vw, 3.5rem) 0 clamp(1rem, 3vw, 2rem);
}

.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--faq-gap);
}

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

.page-faq .faq-index__title {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--silver);
}

.page-faq .faq-index__list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 0.9rem 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-index__link {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.55rem 0.95rem;
  border: 1px solid var(--line-soft);
  border-radius: var(--r-pill);
  background: rgba(255, 255, 255, 0.72);
  color: var(--indigo);
  font-size: 0.9rem;
  text-decoration: none;
  transition: background 0.25s var(--ease), border-color 0.25s var(--ease), color 0.25s var(--ease);
}

.page-faq .faq-index__no {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--amber-deep);
  transition: color 0.25s var(--ease);
}

.page-faq .faq-index__link:hover {
  background: var(--indigo);
  border-color: var(--indigo);
  color: var(--frost);
}

.page-faq .faq-index__link:hover .faq-index__no {
  color: var(--amber);
}

.page-faq .faq-index__note {
  margin: 1rem 0 0;
  font-size: 0.8rem;
  line-height: 1.75;
  color: var(--silver);
}

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

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  scroll-margin-top: 5.5rem;
}

.page-faq .faq-group + .faq-group {
  margin-top: clamp(2.5rem, 5vw, 4rem);
}

.page-faq .faq-group__head {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding-bottom: 1rem;
  border-bottom: 2px solid var(--indigo);
}

.page-faq .faq-group__no {
  flex: none;
  display: grid;
  place-items: center;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: var(--r-pill);
  background: var(--indigo);
  color: var(--frost);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.04em;
}

.page-faq #faq-install .faq-group__no {
  background: var(--amber);
  color: var(--ink);
}

.page-faq #faq-member .faq-group__no {
  background: var(--green);
  color: var(--frost);
}

.page-faq #faq-support .faq-group__no {
  background: var(--ink);
  color: var(--amber);
}

.page-faq .faq-group__title {
  margin: 0;
  font-size: clamp(1.25rem, 1.05rem + 0.8vw, 1.7rem);
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--indigo);
}

.page-faq .faq-group__sub {
  margin: 0.35rem 0 0;
  font-size: 0.875rem;
  line-height: 1.65;
  color: var(--silver);
}

/* ---------- 折叠问答 ---------- */
.page-faq .faq-list {
  margin-top: 0.35rem;
}

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

.page-faq .faq-item__summary {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 1.05rem 0.25rem;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-item__q {
  flex: 1 1 auto;
  min-width: 0;
  margin: 0;
  font-size: var(--faq-q-size);
  font-weight: 600;
  line-height: 1.55;
  color: var(--indigo);
  transition: color 0.25s var(--ease);
}

.page-faq .faq-item__summary:hover .faq-item__q {
  color: var(--amber-deep);
}

.page-faq .faq-item__summary:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 3px;
  border-radius: var(--r-sm);
}

.page-faq .faq-item__marks {
  position: relative;
  flex: none;
  width: 1.5rem;
  height: 1.5rem;
  margin-top: 0.1rem;
  border-radius: 50%;
  background: var(--frost-2);
  transition: background 0.3s var(--ease);
}

.page-faq .faq-item__marks::before,
.page-faq .faq-item__marks::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  background: var(--indigo);
  transform: translate(-50%, -50%);
  transition: opacity 0.28s var(--ease), background 0.28s var(--ease);
}

.page-faq .faq-item__marks::before {
  width: 0.72rem;
  height: 1.5px;
}

.page-faq .faq-item__marks::after {
  width: 1.5px;
  height: 0.72rem;
}

.page-faq .faq-item[open] .faq-item__marks {
  background: var(--amber);
}

.page-faq .faq-item[open] .faq-item__marks::after {
  opacity: 0;
}

.page-faq .faq-item__body {
  padding: 0 clamp(0.75rem, 5vw, 3rem) 1.4rem 0.25rem;
  font-size: 0.95rem;
  line-height: 1.85;
  color: var(--graphite);
}

.page-faq .faq-item__body p {
  margin: 0 0 0.6rem;
}

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

.page-faq .faq-item__body .link {
  color: var(--indigo);
  text-decoration: underline;
  text-decoration-color: var(--amber);
  text-underline-offset: 3px;
}

.page-faq .faq-item__body .link:hover {
  color: var(--amber-deep);
  text-decoration-color: var(--amber-deep);
}

/* ---------- 配图 ---------- */
.page-faq .faq-figure {
  margin: 1.75rem 0 0;
  border-radius: var(--r-md);
  overflow: hidden;
  border: 1px solid var(--line-soft);
  background: var(--ink);
}

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

.page-faq .faq-figure figcaption {
  padding: 0.85rem 1.1rem;
  font-size: 0.8rem;
  line-height: 1.7;
  color: var(--silver);
  background: var(--ink);
}

/* ---------- 收尾行动区 ---------- */
.page-faq .faq-cta {
  padding: clamp(2.5rem, 6vw, 4.5rem) 0 clamp(3rem, 7vw, 5rem);
}

.page-faq .faq-cta__panel {
  position: relative;
  border-radius: var(--r-lg);
  padding: clamp(1.75rem, 5vw, 3.25rem);
  overflow: hidden;
  color: var(--frost);
  background: linear-gradient(150deg, var(--indigo-deep) 0%, var(--ink) 74%);
}

.page-faq .faq-cta__panel::before {
  content: "";
  position: absolute;
  top: -32%;
  right: -18%;
  width: 22rem;
  height: 22rem;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(232, 163, 61, 0.3), rgba(232, 163, 61, 0) 66%);
  pointer-events: none;
}

.page-faq .faq-cta__eyebrow {
  position: relative;
  color: var(--amber);
}

.page-faq .faq-cta__title {
  position: relative;
  margin: 0.6rem 0 0;
  max-width: 34rem;
  font-size: clamp(1.4rem, 1.05rem + 1.6vw, 2.2rem);
  font-weight: 800;
  line-height: 1.26;
  letter-spacing: -0.015em;
  color: #fff;
}

.page-faq .faq-cta__text {
  position: relative;
  margin: 1rem 0 0;
  max-width: 40rem;
  line-height: 1.8;
  color: rgba(244, 246, 248, 0.78);
}

.page-faq .faq-cta__actions {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.6rem;
}

/* ---------- 响应式 ---------- */
@media (min-width: 960px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
  }

  .page-faq .faq-index {
    position: sticky;
    top: 5.5rem;
    align-self: start;
    padding-right: 1rem;
  }

  .page-faq .faq-index__list {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 0.25rem;
  }

  .page-faq .faq-index__link {
    border-radius: var(--r-md);
    border-color: transparent;
    background: transparent;
    padding: 0.6rem 0.8rem;
  }

  .page-faq .faq-index__link:hover {
    background: rgba(27, 42, 74, 0.08);
    border-color: transparent;
    color: var(--indigo);
  }

  .page-faq .faq-index__link:hover .faq-index__no {
    color: var(--amber-deep);
  }
}

@media (max-width: 560px) {
  .page-faq .faq-group__head {
    gap: 0.75rem;
  }

  .page-faq .faq-group__no {
    width: 2.15rem;
    height: 2.15rem;
    font-size: 0.72rem;
  }

  .page-faq .faq-item__summary {
    gap: 0.75rem;
  }

  .page-faq .faq-item__body {
    padding-right: 0.75rem;
  }

  .page-faq .faq-cta__actions .btn {
    width: 100%;
    justify-content: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq *,
  .page-faq *::before,
  .page-faq *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}