.page-faq {
  display: block;
  background: var(--ink-900);
  color: var(--paper);
  font-size: var(--fs-body);
  line-height: 1.75;
  padding-bottom: 88px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  background: linear-gradient(112deg, var(--ink-900) 0%, var(--ink-800) 54%, var(--ink-700) 100%);
  border-bottom: 1px solid var(--line);
  padding: 20px 0 40px;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  right: -130px;
  top: 50%;
  width: 420px;
  height: 420px;
  transform: translateY(-50%);
  border-radius: 50%;
  border: 2px solid rgba(200, 164, 75, 0.22);
  box-shadow: 0 0 0 44px rgba(30, 122, 76, 0.10), 0 0 0 96px rgba(200, 164, 75, 0.05);
  pointer-events: none;
}

.page-faq .faq-hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 28px;
}

.page-faq .faq-kicker {
  color: var(--gold-soft);
  margin: 22px 0 0;
}

.page-faq .faq-h1 {
  margin: 12px 0 0;
  font-size: clamp(30px, 7vw, 52px);
  line-height: 1.14;
  font-weight: 900;
  letter-spacing: -0.01em;
  transform: skewX(-2deg);
  transform-origin: left bottom;
  text-wrap: balance;
}

.page-faq .faq-lede {
  margin: 16px 0 0;
  max-width: 40em;
  color: var(--muted);
}

.page-faq .faq-hero-aside {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-faq .faq-fact {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px 16px;
  background: rgba(6, 18, 13, 0.72);
}

.page-faq .faq-fact-num {
  font-size: 30px;
  line-height: 1.1;
  color: var(--neon);
}

.page-faq .faq-fact-label {
  color: var(--muted);
  letter-spacing: 0.06em;
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
  padding-top: 36px;
}

.page-faq .faq-index-title {
  margin: 0 0 10px;
  font-size: var(--fs-label);
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold-soft);
}

.page-faq .faq-index-list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 10px 0 10px;
  list-style: none;
  overflow-x: auto;
  border-top: 2px solid var(--line);
  scrollbar-width: thin;
}

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

.page-faq .faq-index-link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 10px 14px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: var(--ink-800);
  color: var(--paper);
  text-decoration: none;
  white-space: nowrap;
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-faq .faq-index-link:hover,
.page-faq .faq-index-link:focus-visible {
  border-color: var(--gold-soft);
  background: var(--ink-700);
}

.page-faq .faq-index-idx {
  font-family: var(--font-num);
  font-size: 13px;
  font-weight: 700;
  color: var(--gold);
}

.page-faq .faq-index-text {
  font-size: 15px;
}

/* ---------- 章节 ---------- */
.page-faq .faq-stream {
  min-width: 0;
}

.page-faq .faq-group {
  margin-bottom: 52px;
  scroll-margin-top: calc(var(--header-h) + 24px);
}

.page-faq .faq-group-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 4px 14px;
  align-items: baseline;
  border-top: 3px solid var(--gold);
  padding-top: 14px;
  margin-bottom: 12px;
}

.page-faq .faq-group-idx {
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--gold);
}

.page-faq .faq-group-title {
  margin: 0;
  font-size: clamp(24px, 4.4vw, 34px);
  line-height: 1.2;
  font-weight: 900;
  letter-spacing: -0.01em;
}

.page-faq .faq-group-desc {
  grid-column: 1 / -1;
  margin: 4px 0 0;
  font-size: 15px;
  color: var(--muted);
}

.page-faq .faq-figure {
  margin: 18px 0 10px;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.page-faq .faq-figure figcaption {
  margin-top: 8px;
}

/* ---------- 条目 ---------- */
.page-faq .faq-list {
  border-top: 1px solid var(--line-soft);
}

.page-faq .faq-item {
  border-bottom: 1px solid var(--line-soft);
  background: transparent;
  transition: background var(--dur) var(--ease);
}

.page-faq .faq-item summary {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 18px 10px 18px 4px;
  cursor: pointer;
  list-style: none;
  transition: background var(--dur) var(--ease), padding-left var(--dur) var(--ease);
}

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

.page-faq .faq-item summary::marker {
  content: "";
}

.page-faq .faq-item summary:hover,
.page-faq .faq-item summary:focus-visible {
  background: rgba(20, 64, 47, 0.34);
  padding-left: 12px;
}

.page-faq .faq-item[open] summary {
  background: rgba(20, 64, 47, 0.22);
}

.page-faq .faq-item summary::after {
  content: "";
  flex: 0 0 auto;
  width: 9px;
  height: 9px;
  margin-top: 8px;
  margin-left: auto;
  border-right: 2px solid var(--gold);
  border-bottom: 2px solid var(--gold);
  transform: rotate(45deg);
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .faq-item[open] summary::after {
  transform: rotate(-135deg);
  border-color: var(--neon);
}

.page-faq .faq-q-mark {
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  width: 26px;
  height: 26px;
  margin-top: 4px;
  border-radius: 3px;
  background: var(--neon);
  color: var(--ink-900);
  font-size: 13px;
  font-weight: 700;
  line-height: 1;
}

.page-faq .faq-q-text {
  font-size: 17px;
  font-weight: 700;
  color: var(--paper);
}

.page-faq .faq-a {
  padding: 0 24px 20px 44px;
  border-left: 1px solid transparent;
}

.page-faq .faq-a p {
  margin: 0;
  max-width: 42em;
  color: var(--muted);
  font-size: var(--fs-body);
  line-height: 1.75;
}

.page-faq .faq-a strong {
  font-weight: 700;
  color: var(--paper);
  border-bottom: 1px solid var(--gold-soft);
}

/* ---------- 收尾 ---------- */
.page-faq .faq-next {
  display: grid;
  gap: 16px;
  padding: 24px;
  border-left: 3px solid var(--neon);
  border-radius: var(--radius);
  background: linear-gradient(120deg, var(--ink-800) 0%, var(--ink-700) 100%);
}

.page-faq .faq-next p {
  margin: 0;
  max-width: 34em;
  color: var(--paper);
}

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

/* ---------- 平板及以上 ---------- */
@media (min-width: 768px) {
  .page-faq .faq-hero {
    padding: 22px 0 54px;
  }

  .page-faq .faq-hero-inner {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    gap: 44px;
    align-items: end;
  }

  .page-faq .faq-fact-num {
    font-size: 34px;
  }

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

/* ---------- 桌面：固定左栏索引 ---------- */
@media (min-width: 1024px) {
  .page-faq .faq-hero::before {
    right: -80px;
  }

  .page-faq .faq-body {
    grid-template-columns: 268px minmax(0, 1fr);
    gap: 56px;
    padding-top: 48px;
  }

  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--header-h) + 28px);
    align-self: start;
  }

  .page-faq .faq-index-list {
    display: block;
    overflow: visible;
    padding: 0;
    border-top: 0;
    border-left: 3px solid var(--line-soft);
  }

  .page-faq .faq-index-link {
    position: relative;
    display: flex;
    align-items: center;
    padding: 12px 8px 12px 20px;
    border: 0;
    border-radius: 0;
    background: transparent;
    white-space: normal;
  }

  .page-faq .faq-index-link::before {
    content: "";
    position: absolute;
    left: -3px;
    top: 6px;
    bottom: 6px;
    width: 3px;
    background: var(--gold);
    opacity: 0;
    transition: opacity var(--dur) var(--ease);
  }

  .page-faq .faq-index-link:hover,
  .page-faq .faq-index-link:focus-visible {
    background: rgba(20, 64, 47, 0.42);
    border-color: transparent;
  }

  .page-faq .faq-index-link:hover::before,
  .page-faq .faq-index-link:focus-visible::before {
    opacity: 1;
  }

  .page-faq .faq-index-text {
    font-size: 16px;
    font-weight: 700;
  }

  .page-faq .faq-figure {
    margin: 26px 0 14px;
  }
}

/* ---------- 减少动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-index-link,
  .page-faq .faq-item,
  .page-faq .faq-item summary,
  .page-faq .faq-item summary::after,
  .page-faq .faq-index-link::before {
    transition: none;
  }

  .page-faq .faq-h1 {
    transform: none;
  }
}