.page-faq {
  --faq-nav-w: 236px;
  --faq-dot: #7FA69B;
  background: var(--paper);
  color: var(--ink);
}

/* ---------------- 首屏 ---------------- */
.page-faq .faq-hero {
  padding-top: 26px;
  border-bottom: 1px solid var(--line);
  background-image:
    radial-gradient(120% 90% at 6% 0%, rgba(30, 91, 79, .10), rgba(30, 91, 79, 0) 62%),
    linear-gradient(180deg, rgba(227, 216, 198, .55), rgba(245, 239, 227, 0) 70%);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: 26px;
  align-items: end;
  padding: 20px 0 30px;
}

.page-faq .faq-hero__lead h1 {
  margin: 12px 0 16px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.8rem, 5.4vw, 3rem);
  line-height: 1.15;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-faq .faq-hero__lead .prose {
  margin: 0;
  color: var(--ink-soft);
}

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

.page-faq .faq-figures {
  margin-top: 28px;
  border-top: 1px solid var(--line);
}

.page-faq .faq-figures .stat__value {
  font-family: var(--font-mono);
  color: var(--clay);
}

/* ---------------- 主体两栏 ---------------- */
.page-faq .faq-body {
  background: var(--paper);
}

.page-faq .faq-layout {
  display: grid;
  gap: 30px;
}

/* 分类目录：移动端横向滚动 */
.page-faq .faq-nav__title {
  margin: 0 0 10px;
  color: var(--muted);
}

.page-faq .faq-nav__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 8px;
  list-style: none;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.page-faq .faq-nav__item {
  flex: 0 0 auto;
}

.page-faq .faq-nav__link {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 13px 7px 11px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--paper-3);
  color: var(--muted);
  font-size: .88rem;
  line-height: 1.3;
  text-decoration: none;
  white-space: nowrap;
  transition: color .2s ease, border-color .2s ease, background-color .2s ease;
}

.page-faq .faq-nav__link:hover,
.page-faq .faq-nav__link:focus-visible {
  color: var(--ink);
  border-color: var(--cedar-mist);
}

.page-faq .faq-nav__no {
  font-family: var(--font-mono);
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .08em;
  color: var(--clay);
}

/* ---------------- 问题组 ---------------- */
.page-faq .faq-group + .faq-group {
  margin-top: 46px;
}

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  gap: 13px;
  padding-bottom: 10px;
  margin-bottom: 2px;
  border-bottom: 1px solid var(--clay);
}

.page-faq .faq-group__no {
  font-family: var(--font-mono);
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--clay);
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.14rem, 2.6vw, 1.42rem);
  letter-spacing: -0.005em;
  color: var(--ink);
}

.page-faq .faq-devices__media {
  margin: 16px 0 4px;
}

/* ---------------- 折叠条目 ---------------- */
.page-faq .faq-item {
  border-bottom: 1px solid var(--paper-2);
}

.page-faq .faq-item .fold__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  cursor: pointer;
}

.page-faq .faq-item__q {
  font-weight: 700;
  font-size: .98rem;
  line-height: 1.45;
  color: var(--ink);
}

.page-faq .faq-item__dot {
  flex: none;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--faq-dot);
  transition: background-color .25s ease, box-shadow .25s ease;
}

.page-faq .faq-item[open] .faq-item__dot {
  background: var(--cyan);
  box-shadow: 0 0 0 3px rgba(43, 217, 192, .18);
}

.page-faq .faq-item .fold__body p {
  margin: 0;
  max-width: 68ch;
  font-size: .94rem;
  line-height: 1.78;
  color: var(--ink-soft);
}

/* ---------------- 底部关联带 ---------------- */
.page-faq .faq-bridge {
  color: var(--paper);
}

.page-faq .faq-bridge__label {
  margin: 0 0 12px;
  color: var(--clay-soft);
}

.page-faq .faq-bridge__text {
  margin: 0 0 24px;
  max-width: 62ch;
  font-size: clamp(1.02rem, 2.2vw, 1.28rem);
  line-height: 1.6;
  font-weight: 700;
  color: var(--paper);
}

.page-faq .faq-bridge__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-bridge__link {
  display: inline-block;
  padding: 9px 16px;
  border: 1px solid rgba(245, 239, 227, .34);
  color: var(--paper);
  font-size: .9rem;
  font-family: var(--font-mono);
  letter-spacing: .02em;
  text-decoration: none;
  transition: border-color .2s ease, color .2s ease, background-color .2s ease;
}

.page-faq .faq-bridge__link:hover,
.page-faq .faq-bridge__link:focus-visible {
  border-color: var(--cyan);
  color: var(--cyan);
  background: rgba(43, 217, 192, .08);
}

/* ---------------- 中等屏 ---------------- */
@media (min-width: 760px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, .8fr);
    gap: 36px;
    padding: 28px 0 38px;
  }

  .page-faq .faq-layout {
    gap: 38px;
  }

  .page-faq .faq-group + .faq-group {
    margin-top: 54px;
  }
}

/* ---------------- 桌面端：粘性分类目录 ---------------- */
@media (min-width: 1000px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-nav-w) minmax(0, 1fr);
    gap: 52px;
    align-items: start;
  }

  .page-faq .faq-nav {
    position: sticky;
    top: 32px;
    align-self: start;
    padding-right: 24px;
    border-right: 1px solid var(--line);
  }

  .page-faq .faq-nav__list {
    display: block;
    overflow: visible;
    padding: 0;
  }

  .page-faq .faq-nav__item + .faq-nav__item {
    border-top: 1px solid rgba(59, 74, 85, .22);
  }

  .page-faq .faq-nav__link {
    display: grid;
    grid-template-columns: 28px minmax(0, 1fr);
    gap: 10px;
    align-items: baseline;
    padding: 9px 10px 9px 8px;
    border: 0;
    border-left: 2px solid transparent;
    border-radius: 0;
    background: transparent;
    white-space: normal;
    font-size: .9rem;
  }

  .page-faq .faq-nav__link:hover,
  .page-faq .faq-nav__link:focus-visible {
    border-left-color: var(--cedar-mist);
    background: rgba(30, 91, 79, .06);
  }

  .page-faq .faq-nav__link.is-current {
    border-left-color: var(--clay);
    background: rgba(194, 90, 43, .08);
    color: var(--cedar);
    font-weight: 700;
  }

  .page-faq .faq-item__q {
    font-size: 1.02rem;
  }
}

@media (min-width: 1200px) {
  .page-faq .faq-group + .faq-group {
    margin-top: 62px;
  }
}

/* ---------------- 动效 ---------------- */
@media (prefers-reduced-motion: no-preference) {
  .page-faq .faq-nav__link,
  .page-faq .faq-item__dot {
    transition-duration: .25s;
  }
}

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

  .page-faq .faq-nav__link,
  .page-faq .faq-item__dot,
  .page-faq .faq-bridge__link {
    transition: none;
  }
}