.page-faq {
  --faq-body: #C4D2DC;
  --faq-hair: rgba(39, 80, 110, 0.72);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-intro {
  padding-top: clamp(16px, 3vw, 32px);
}

.page-faq .faq-hero {
  display: grid;
  gap: clamp(20px, 3vw, 32px);
  align-items: start;
}

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

.page-faq .faq-hero__lead .display {
  margin: clamp(12px, 1.6vw, 18px) 0 clamp(14px, 2vw, 20px);
}

.page-faq .faq-hero__lead .prose + .prose {
  margin-top: 12px;
}

.page-faq .faq-index {
  border: 1px solid var(--c-line);
  border-radius: var(--radius-lg);
  padding: 14px;
  background: linear-gradient(180deg, rgba(26, 58, 84, 0.72), rgba(11, 27, 43, 0.78));
  box-shadow: 0 22px 48px -40px rgba(0, 0, 0, 0.95);
}

.page-faq .faq-index .eyebrow {
  margin: 4px 6px 12px;
}

.page-faq .faq-index__link {
  display: grid;
  grid-template-columns: max-content minmax(0, 1fr);
  align-items: center;
  gap: 12px;
  padding: 11px 12px;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  color: var(--c-white);
  font-size: 15px;
  text-decoration: none;
  transition: border-color var(--dur) var(--ease-out), background-color var(--dur-fast) var(--ease-out), transform var(--dur-fast) var(--ease-out);
}

.page-faq .faq-index__link + .faq-index__link {
  margin-top: 6px;
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  border-color: rgba(200, 255, 61, 0.45);
  background-color: rgba(11, 27, 43, 0.72);
  transform: translateX(3px);
}

.page-faq .faq-index__link:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

.page-faq .faq-index__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--c-lime);
}

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  border-top: 1px solid var(--faq-hair);
  padding-top: clamp(24px, 3.5vw, 40px);
  margin-top: clamp(28px, 4vw, 52px);
}

.page-faq .faq-group:first-of-type {
  margin-top: 0;
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: max-content minmax(0, 1fr);
  gap: 4px 16px;
  align-items: baseline;
  margin-bottom: clamp(18px, 2.4vw, 26px);
}

.page-faq .faq-group__num {
  font-family: var(--font-mono);
  font-size: clamp(18px, 2vw, 24px);
  letter-spacing: 0.08em;
  color: var(--c-lime);
}

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

.page-faq .faq-group__hint {
  grid-column: 2;
  margin: 4px 0 0;
  max-width: 58ch;
  color: var(--c-muted);
  font-size: 15px;
  line-height: 1.75;
}

/* ---------- 媒体 ---------- */
.page-faq .faq-media {
  margin: 0 0 clamp(20px, 3vw, 30px);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

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

/* ---------- 问答卡 ---------- */
.page-faq .faq-list {
  display: grid;
  gap: 12px;
}

.page-faq .faq-item {
  border: 1px solid var(--c-line);
  border-radius: var(--radius-md);
  background: linear-gradient(180deg, rgba(16, 42, 66, 0.66), rgba(11, 27, 43, 0.68));
  box-shadow: 0 1px 0 rgba(242, 245, 247, 0.03), 0 14px 32px -28px rgba(0, 0, 0, 0.9);
  overflow: hidden;
  transition: border-color var(--dur) var(--ease-out), transform var(--dur) var(--ease-out), box-shadow var(--dur) var(--ease-out);
}

.page-faq .faq-item:hover {
  border-color: rgba(200, 255, 61, 0.5);
  transform: translateY(-2px);
}

.page-faq .faq-item[open] {
  border-color: rgba(200, 255, 61, 0.62);
  box-shadow: 0 0 0 1px rgba(200, 255, 61, 0.14), 0 26px 46px -34px rgba(200, 255, 61, 0.32);
}

.page-faq .faq-item__q {
  display: grid;
  grid-template-columns: max-content minmax(0, 1fr) max-content;
  align-items: center;
  gap: 14px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
  color: var(--c-white);
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 600;
  letter-spacing: 0.01em;
  line-height: 1.6;
  transition: background-color var(--dur-fast) var(--ease-out);
}

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

.page-faq .faq-item__q:hover {
  background-color: rgba(26, 58, 84, 0.55);
}

.page-faq .faq-item__q:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
  border-radius: var(--radius-md);
}

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

.page-faq .faq-item__idx {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--c-muted);
  transition: color var(--dur-fast) var(--ease-out);
}

.page-faq .faq-item[open] .faq-item__idx {
  color: var(--c-lime);
}

.page-faq .faq-item__chev {
  width: 11px;
  height: 11px;
  border-right: 2px solid var(--c-muted);
  border-bottom: 2px solid var(--c-muted);
  transform: rotate(45deg);
  transition: transform var(--dur) var(--ease-out), border-color var(--dur-fast) var(--ease-out);
}

.page-faq .faq-item[open] .faq-item__chev {
  transform: rotate(-135deg);
  border-color: var(--c-lime);
}

.page-faq .faq-item__a {
  padding: 14px 18px 18px;
  border-top: 1px solid var(--faq-hair);
  display: grid;
  gap: 10px;
  animation: faq-open 0.22s var(--ease-out) both;
}

.page-faq .faq-item__a p {
  margin: 0;
  max-width: 64ch;
  color: var(--faq-body);
  font-size: 15.5px;
  line-height: 1.85;
}

.page-faq .faq-item__lead {
  color: var(--c-lime) !important;
  font-weight: 600;
  font-size: 16px !important;
  line-height: 1.7 !important;
  padding-left: 12px;
  border-left: 2px solid rgba(200, 255, 61, 0.55);
}

@keyframes faq-open {
  from {
    opacity: 0;
    transform: translate3d(0, -6px, 0);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* ---------- 同步双翼 ---------- */
.page-faq .faq-sync {
  display: grid;
  gap: clamp(18px, 3vw, 32px);
  align-items: start;
}

.page-faq .faq-sync .faq-media {
  margin-bottom: 0;
  border: 1px solid var(--c-line);
}

/* ---------- 指标速览 ---------- */
.page-faq .faq-metric {
  margin-top: clamp(20px, 3vw, 28px);
  border: 1px solid var(--c-line);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: linear-gradient(180deg, rgba(16, 42, 66, 0.55), rgba(11, 27, 43, 0.55));
}

.page-faq .faq-metric__cap {
  margin: 0;
  padding: 12px 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--c-muted);
  border-bottom: 1px solid var(--faq-hair);
}

/* ---------- 客服通道 ---------- */
.page-faq .faq-channels {
  display: grid;
  gap: 14px;
}

.page-faq .faq-channel {
  border: 1px solid var(--c-line);
  border-radius: var(--radius-md);
  padding: clamp(18px, 2.4vw, 24px);
  background: linear-gradient(180deg, rgba(26, 58, 84, 0.6), rgba(11, 27, 43, 0.62));
  transition: border-color var(--dur) var(--ease-out), transform var(--dur) var(--ease-out);
}

.page-faq .faq-channel:hover {
  border-color: rgba(200, 255, 61, 0.45);
  transform: translateY(-2px);
}

.page-faq .faq-channel__value {
  margin: 8px 0 10px;
  font-family: var(--font-mono);
  font-size: clamp(16px, 1.7vw, 19px);
  letter-spacing: 0.02em;
  color: var(--c-white);
  word-break: break-word;
}

.page-faq .faq-channel__desc {
  margin: 0;
  color: var(--faq-body);
  font-size: 15px;
  line-height: 1.8;
}

.page-faq .faq-contact-note {
  margin: clamp(16px, 2.4vw, 22px) 0 0;
  max-width: 72ch;
  color: var(--c-muted);
  font-size: 14.5px;
  line-height: 1.85;
}

/* ---------- 收尾 ---------- */
.page-faq .faq-next {
  margin-top: clamp(36px, 5vw, 64px);
  border: 1px solid var(--c-line);
  border-radius: var(--radius-lg);
  padding: clamp(20px, 3vw, 32px);
  background: linear-gradient(120deg, rgba(124, 92, 255, 0.14), rgba(11, 27, 43, 0.4) 46%, rgba(200, 255, 61, 0.1));
  display: grid;
  gap: 18px;
}

.page-faq .faq-next .display {
  margin: 0 0 8px;
}

.page-faq .faq-next__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-faq .faq-next__links .btn {
  text-decoration: none;
}

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-faq .faq-channels {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-next {
    grid-template-columns: minmax(0, 1fr) max-content;
    align-items: center;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.18fr) minmax(0, 0.82fr);
    gap: clamp(36px, 5vw, 72px);
  }

  .page-faq .faq-index {
    position: sticky;
    top: 104px;
  }

  .page-faq .faq-sync {
    grid-template-columns: minmax(0, 1fr) 340px;
  }
}

@media (max-width: 560px) {
  .page-faq .faq-item__q {
    font-size: 16px;
    padding: 14px;
    gap: 10px;
  }

  .page-faq .faq-item__a {
    padding: 12px 14px 16px;
  }

  .page-faq .faq-item__a p {
    font-size: 15px;
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item,
  .page-faq .faq-channel,
  .page-faq .faq-index__link {
    transition: none;
  }

  .page-faq .faq-item__a {
    animation: none;
  }
}