.page-faq {
  --faq-rail: 244px;
  --faq-gap: 60px;
  --faq-ink-soft: rgba(246, 242, 233, 0.78);
  background: var(--ink);
  color: var(--porcelain);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: 72px 0 84px;
  background:
    radial-gradient(115% 85% at 84% 8%, rgba(216, 169, 78, 0.14), transparent 58%),
    linear-gradient(178deg, #091729 0%, #0d2440 100%);
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 44px;
  align-items: center;
}

.page-faq .faq-hero__eyebrow {
  margin: 22px 0 0;
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--gold);
  text-transform: uppercase;
}

.page-faq .faq-hero__title {
  margin: 16px 0 0;
  font-family: var(--font-serif);
  font-weight: 300;
  font-size: clamp(2rem, 5.4vw, 3.5rem);
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--porcelain);
}

.page-faq .faq-hero__lede {
  margin: 20px 0 0;
  max-width: 48ch;
  font-size: 17px;
  line-height: 1.85;
  color: var(--faq-ink-soft);
}

.page-faq .faq-hero__quick {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.page-faq .faq-hero__visual {
  margin: 0;
  border: 1px solid var(--rail-line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 26px 54px rgba(0, 0, 0, 0.42);
}

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

/* ---------- 主体两栏 ---------- */
.page-faq .faq-body {
  padding: 84px 0 40px;
}

.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 40px;
  align-items: start;
}

.page-faq .faq-rail {
  border-top: 1px solid var(--hair-line);
  padding-top: 14px;
}

.page-faq .faq-rail__title {
  margin: 0 0 12px;
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--mist);
}

.page-faq .faq-rail__list {
  display: flex;
  flex-wrap: nowrap;
  gap: 10px;
  margin: 0;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-faq .faq-rail__list > li {
  flex: 0 0 auto;
}

.page-faq .faq-rail__link {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 9px 13px;
  border: 1px solid var(--hair-line);
  border-radius: var(--radius-sm);
  background: rgba(246, 242, 233, 0.03);
  color: var(--porcelain);
  font-size: 14.5px;
  line-height: 1.4;
  text-decoration: none;
  white-space: nowrap;
  transition: background 200ms var(--ease), border-color 200ms var(--ease),
    color 200ms var(--ease), transform 200ms var(--ease);
}

.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  background: rgba(216, 169, 78, 0.12);
  border-color: var(--gold);
  color: var(--gold-light);
  transform: translateX(3px);
}

.page-faq .faq-rail__no {
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--gold);
}

/* ---------- 问答分组 ---------- */
.page-faq .faq-group {
  --tone: var(--gold);
}

.page-faq .faq-group--device {
  --tone: var(--gold-light);
}

.page-faq .faq-group--account {
  --tone: var(--mist);
}

.page-faq .faq-group--feedback {
  --tone: var(--gold);
}

.page-faq .faq-group + .faq-group {
  margin-top: 88px;
}

.page-faq .faq-group,
.page-faq .faq-exit {
  scroll-margin-top: calc(var(--header-h) + 28px);
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  column-gap: 14px;
  row-gap: 6px;
  align-items: baseline;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--hair-line);
}

.page-faq .faq-group__no {
  grid-row: 1 / span 2;
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--tone);
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: clamp(1.35rem, 2.6vw, 1.75rem);
  line-height: 1.3;
  color: var(--porcelain);
}

.page-faq .faq-group__note {
  grid-column: 2;
  margin: 0;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- 折叠问答 ---------- */
.page-faq .faq-list {
  margin-top: 6px;
}

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

.page-faq .faq-item__q {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 20px 4px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-sans);
  font-size: 16.5px;
  font-weight: 500;
  line-height: 1.6;
  color: var(--porcelain);
  transition: color 200ms 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(--gold-light);
}

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

.page-faq .faq-item__text {
  flex: 1 1 auto;
  min-width: 0;
}

.page-faq .faq-item__icon {
  position: relative;
  flex: 0 0 auto;
  width: 18px;
  height: 18px;
  margin-top: 4px;
  color: var(--gold);
  transition: transform 240ms var(--ease), color 240ms var(--ease);
}

.page-faq .faq-item__icon::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 3px;
  width: 9px;
  height: 9px;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: rotate(45deg);
}

.page-faq .faq-item[open] .faq-item__icon {
  transform: rotate(180deg);
  color: var(--gold-light);
}

.page-faq .faq-item__a {
  margin: 0 0 22px;
  padding: 2px 12px 0 18px;
  border-left: 1px solid var(--rail-line);
  font-size: 16px;
  line-height: 1.85;
  color: var(--faq-ink-soft);
}

.page-faq .faq-item__a p {
  margin: 0;
}

.page-faq .faq-item[open] .faq-item__a {
  animation: faq-answer-in 260ms var(--ease) both;
}

@keyframes faq-answer-in {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.page-faq .faq-aside {
  margin: 30px 0 0;
  border: 1px solid var(--hair-line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: rgba(22, 50, 79, 0.35);
}

.page-faq .faq-aside img {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

/* ---------- 出口 ---------- */
.page-faq .faq-exit {
  position: relative;
  padding: 104px 0 120px;
  background:
    radial-gradient(88% 76% at 80% 14%, rgba(18, 63, 60, 0.95), transparent 64%),
    var(--ink);
}

.page-faq .faq-exit__inner {
  max-width: 720px;
}

.page-faq .faq-exit__eyebrow {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--gold);
}

.page-faq .faq-exit__title {
  margin: 16px 0 0;
  font-family: var(--font-serif);
  font-weight: 300;
  font-size: clamp(1.7rem, 4vw, 2.6rem);
  line-height: 1.25;
  color: var(--porcelain);
}

.page-faq .faq-exit__text {
  margin: 20px 0 0;
  max-width: 56ch;
  font-size: 16.5px;
  line-height: 1.9;
  color: var(--faq-ink-soft);
}

.page-faq .faq-exit__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.page-faq .copy-status {
  min-height: 1.4em;
  margin: 12px 0 0;
  font-size: 14px;
  color: var(--gold-light);
}

.page-faq .faq-exit__contact {
  margin: 26px 0 0;
  padding-top: 20px;
  border-top: 1px solid var(--hair-line);
  font-size: 15px;
  letter-spacing: 0.04em;
  color: var(--porcelain);
}

.page-faq .faq-exit__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-exit__links a {
  color: var(--gold);
  font-size: 15px;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 200ms var(--ease), border-bottom-color 200ms var(--ease);
}

.page-faq .faq-exit__links a:hover,
.page-faq .faq-exit__links a:focus-visible {
  color: var(--gold-light);
  border-bottom-color: var(--gold-light);
}

/* ---------- 桌面端 ---------- */
@media (min-width: 920px) {
  .page-faq .faq-hero {
    padding: 96px 0 104px;
  }

  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
    gap: 64px;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
    gap: var(--faq-gap);
  }

  .page-faq .faq-rail {
    position: sticky;
    top: calc(var(--header-h) + 28px);
    border-top: 0;
    border-left: 1px solid var(--rail-line);
    padding: 4px 0 4px 20px;
  }

  .page-faq .faq-rail__list {
    flex-direction: column;
    gap: 4px;
    padding: 0;
    overflow-x: visible;
  }

  .page-faq .faq-rail__link {
    display: flex;
    width: 100%;
    border-color: transparent;
    background: transparent;
    white-space: normal;
  }

  .page-faq .faq-rail__link:hover,
  .page-faq .faq-rail__link:focus-visible {
    transform: translateX(2px);
  }
}

/* ---------- 窄屏 ---------- */
@media (max-width: 600px) {
  .page-faq .faq-hero {
    padding: 48px 0 60px;
  }

  .page-faq .faq-hero__title {
    font-size: clamp(1.8rem, 8vw, 2.4rem);
  }

  .page-faq .faq-hero__lede {
    font-size: 16px;
  }

  .page-faq .faq-body {
    padding: 56px 0 24px;
  }

  .page-faq .faq-group + .faq-group {
    margin-top: 64px;
  }

  .page-faq .faq-item__q {
    gap: 12px;
    padding: 17px 2px;
    font-size: 15.5px;
  }

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

  .page-faq .faq-exit {
    padding: 72px 0 88px;
  }
}

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

  .page-faq .faq-item__icon,
  .page-faq .faq-rail__link,
  .page-faq .faq-item__q {
    transition: none;
  }
}