/* ============================================
   答疑中心 /answers/
   作用域：.page-faq
   ============================================ */

.page-faq {
  --faq-list-bg: var(--cream);
  --faq-list-ink: var(--brown-ink);
  --faq-list-muted: #55493f;
  --faq-list-line: rgba(26, 21, 18, .16);
  --faq-sticky: 62px;

  background:
    radial-gradient(112% 58% at 88% -8%, rgba(18, 70, 58, .78) 0%, rgba(7, 33, 27, 0) 62%),
    var(--ink-green);
  color: var(--silver);
  font-family: var(--font-body);
  padding-bottom: clamp(48px, 7vw, 96px);
}

/* ---------- 页头上下文 ---------- */
.page-faq .faq-top {
  padding-top: clamp(14px, 2.2vw, 26px);
}

.page-faq .faq-top .breadcrumb {
  font-size: 12px;
  letter-spacing: .04em;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(16px, 2.6vw, 32px) 0 clamp(28px, 4.4vw, 54px);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(22px, 3.4vw, 44px);
  align-items: end;
}

.page-faq .faq-hero__kicker {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--lime);
}

.page-faq .faq-hero__title {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(34px, 8.4vw, 74px);
  line-height: 1.02;
  letter-spacing: -.025em;
  color: var(--silver);
}

.page-faq .faq-hero__deck {
  max-width: 58ch;
  margin: 0 0 22px;
  font-family: var(--font-deck);
  font-size: clamp(16px, 2.1vw, 20px);
  line-height: 1.74;
  color: var(--haze);
}

.page-faq .faq-hero__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-faq .faq-hero__fig {
  position: relative;
  margin: 0;
  border: 1px solid var(--line-2);
  background: linear-gradient(158deg, rgba(18, 70, 58, .92) 0%, rgba(12, 24, 48, .96) 100%);
  box-shadow: 12px 14px 0 -2px rgba(200, 255, 60, .07);
  overflow: hidden;
}

.page-faq .faq-hero__fig img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

/* ---------- 场景跳转短标签 ---------- */
.page-faq .faq-jump {
  position: sticky;
  top: var(--faq-sticky);
  z-index: 30;
  margin-bottom: clamp(26px, 4.4vw, 52px);
  background: rgba(7, 33, 27, .94);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(10px);
}

.page-faq .faq-jump__inner {
  display: flex;
  gap: 8px;
  padding-top: 10px;
  padding-bottom: 10px;
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-jump__inner::-webkit-scrollbar {
  display: none;
}

.page-faq .faq-chip {
  flex: 0 0 auto;
  padding: 7px 15px;
  border: 1px solid var(--line-2);
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  line-height: 1.2;
  white-space: nowrap;
  text-decoration: none;
  color: var(--haze);
  transition: color .18s var(--ease), background .18s var(--ease), border-color .18s var(--ease);
}

.page-faq .faq-chip:hover,
.page-faq .faq-chip:focus-visible {
  color: var(--ink-green);
  background: var(--lime);
  border-color: var(--lime);
}

.page-faq .faq-chip[aria-current] {
  color: var(--ink-green);
  background: var(--lime);
  border-color: var(--lime);
}

/* ---------- 右侧分组索引（大屏） ---------- */
.page-faq .faq-rail {
  display: none;
}

/* ---------- 问答分组 ---------- */
.page-faq .faq-groups {
  display: grid;
  gap: clamp(30px, 5.2vw, 64px);
}

.page-faq .faq-group {
  border-top: 1px solid var(--line);
  padding-top: clamp(18px, 2.6vw, 32px);
  scroll-margin-top: 152px;
}

.page-faq .faq-group__aside {
  margin-bottom: clamp(16px, 2.4vw, 24px);
}

.page-faq .faq-group__index {
  display: inline-block;
  padding: 3px 9px 2px;
  background: var(--lime);
  color: var(--ink-green);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
}

.page-faq .faq-group__title {
  margin: 12px 0 8px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(23px, 4.4vw, 33px);
  line-height: 1.08;
  letter-spacing: -.02em;
  color: var(--silver);
}

.page-faq .faq-group__note {
  margin: 0;
  max-width: 36ch;
  font-family: var(--font-deck);
  font-size: 15px;
  line-height: 1.68;
  color: var(--haze);
}

/* ---------- 问答卡组（浅底） ---------- */
.page-faq .faq-group__list {
  padding: clamp(14px, 2.2vw, 26px) clamp(14px, 2.4vw, 30px);
  background: var(--faq-list-bg);
  color: var(--faq-list-ink);
  border-radius: 3px;
  box-shadow: 0 24px 48px -30px rgba(0, 0, 0, .95);
}

/* ---------- 单条问答 ---------- */
.page-faq .qa {
  border-bottom: 1px solid var(--faq-list-line);
  transition: box-shadow .2s var(--ease), padding-left .2s var(--ease), margin-left .2s var(--ease);
}

.page-faq .qa:last-child {
  border-bottom: 0;
}

.page-faq .qa[open] {
  padding-left: 14px;
  margin-left: -14px;
  box-shadow: inset 3px 0 0 var(--ember);
}

.page-faq .qa__q {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px 0;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(15px, 2vw, 18px);
  line-height: 1.45;
  letter-spacing: -.01em;
  color: var(--faq-list-ink);
}

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

.page-faq .qa__q::marker {
  content: "";
}

.page-faq .qa[open] .qa__q {
  color: var(--ink-green);
}

.page-faq .qa__num {
  flex: 0 0 auto;
  padding-top: 5px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .06em;
  color: var(--ember);
}

.page-faq .qa__text {
  flex: 1 1 auto;
}

.page-faq .qa__a {
  padding: 0 0 18px 33px;
}

.page-faq .qa__a p {
  margin: 0;
  font-size: 15px;
  line-height: 1.74;
  color: var(--faq-list-muted);
}

/* ---------- 组内配图 ---------- */
.page-faq .faq-figure {
  margin: 4px 0 16px;
  border: 1px solid var(--faq-list-line);
  background: var(--turf-green);
  overflow: hidden;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 9 / 7;
  object-fit: cover;
}

.page-faq .faq-figure .media-cap {
  display: block;
  padding: 9px 12px 11px;
  font-family: var(--font-deck);
  font-size: 13px;
  line-height: 1.55;
  color: var(--faq-list-muted);
  background: rgba(26, 21, 18, .045);
}

/* ---------- 收束按钮 ---------- */
.page-faq .faq-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
  padding-top: 18px;
  border-top: 1px solid var(--faq-list-line);
}

/* ============================================
   桌面布局：1:3 场景栏 + 问答列表
   ============================================ */
@media (min-width: 860px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, .82fr);
  }
}

@media (min-width: 900px) {
  .page-faq {
    --faq-sticky: 74px;
  }

  .page-faq .faq-group {
    display: grid;
    grid-template-columns: minmax(180px, 236px) minmax(0, 1fr);
    gap: clamp(24px, 3.6vw, 56px);
    align-items: start;
    scroll-margin-top: 164px;
  }

  .page-faq .faq-group__aside {
    position: sticky;
    top: 146px;
    margin-bottom: 0;
  }

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

@media (min-width: 1400px) {
  .page-faq .faq-rail {
    display: flex;
    flex-direction: column;
    gap: 4px;
    position: fixed;
    right: 14px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 25;
  }

  .page-faq .faq-rail a {
    display: grid;
    place-items: center;
    width: 30px;
    height: 30px;
    border: 1px solid var(--line);
    border-radius: 999px;
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: .04em;
    color: var(--haze);
    text-decoration: none;
    transition: color .18s var(--ease), background .18s var(--ease), border-color .18s var(--ease);
  }

  .page-faq .faq-rail a:hover,
  .page-faq .faq-rail a:focus-visible {
    color: var(--ink-green);
    background: var(--lime);
    border-color: var(--lime);
  }
}

@media (min-width: 1180px) {
  .page-faq .faq-hero__title {
    font-size: clamp(56px, 6vw, 74px);
  }
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq .qa,
  .page-faq .faq-chip,
  .page-faq .faq-rail a {
    transition: none;
  }
}