.page-faq {
  --faq-pad: 20px;
  --faq-gap: 24px;
  background: var(--cream);
  color: var(--char);
  font-family: var(--font-body);
  line-height: 1.8;
  padding-bottom: 8px;
}

.page-faq,
.page-faq *,
.page-faq *::before,
.page-faq *::after {
  box-sizing: border-box;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 24px var(--faq-pad) 8px;
  display: grid;
  gap: 26px;
}

.page-faq .faq-hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--ink-soft);
}

.page-faq .faq-hero__eyebrow::before {
  content: "";
  width: 28px;
  height: 2px;
  background: var(--amber);
  flex: none;
}

.page-faq .faq-hero__title {
  margin: 0 0 16px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(28px, 6.4vw, 52px);
  line-height: 1.16;
  letter-spacing: -0.02em;
  color: var(--ink-900);
}

.page-faq .faq-hero__lead {
  margin: 0;
  font-size: 16px;
  line-height: 1.85;
  color: var(--ink-soft);
  max-width: 56ch;
}

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

.page-faq .faq-hero__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border: 1px solid var(--line-soft);
  background: var(--cream-2);
  object-fit: cover;
}

.page-faq .faq-hero__caption {
  margin-top: 10px;
  font-size: 12px;
  line-height: 1.9;
  letter-spacing: 0.04em;
  color: var(--ink-soft);
}

/* ---------- 四组索引卡 ---------- */
.page-faq .faq-index {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 26px var(--faq-pad) 34px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.page-faq .faq-index__card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 14px 18px;
  background: var(--card);
  border: 1px solid var(--line-soft);
  border-bottom: 2px solid var(--amber-soft);
  border-radius: 2px;
  text-decoration: none;
  color: var(--char);
  transition: border-color 0.18s var(--ease), background 0.18s var(--ease), transform 0.18s var(--ease);
}

.page-faq .faq-index__card:hover,
.page-faq .faq-index__card:focus-visible {
  border-bottom-color: var(--amber);
  background: var(--cream-2);
  transform: translateY(-2px);
  outline: none;
}

.page-faq .faq-index__num {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 22px;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--amber);
}

.page-faq .faq-index__title {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 15px;
  letter-spacing: -0.01em;
  color: var(--ink-900);
}

.page-faq .faq-index__desc {
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--ink-soft);
}

/* ---------- 主体布局 ---------- */
.page-faq .faq-layout {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 4px var(--faq-pad) 56px;
  display: grid;
  gap: 28px;
}

.page-faq .faq-body {
  display: grid;
  gap: 28px;
  min-width: 0;
}

/* ---------- 目录 ---------- */
.page-faq .faq-toc {
  order: -1;
  background: var(--cream-2);
  border: 1px solid var(--line-soft);
  border-left: 3px solid var(--ink-700);
  border-radius: 2px;
  padding: 12px 14px;
  min-width: 0;
}

.page-faq .faq-toc__label {
  margin: 0 0 8px;
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--ink-soft);
}

.page-faq .faq-toc__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  padding-bottom: 2px;
}

.page-faq .faq-toc__list > li {
  flex: none;
}

.page-faq .faq-toc__link {
  display: block;
  white-space: nowrap;
  padding: 6px 12px;
  font-size: 13px;
  color: var(--ink-700);
  text-decoration: none;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 2px;
  transition: background 0.18s var(--ease), border-color 0.18s var(--ease), color 0.18s var(--ease);
}

.page-faq .faq-toc__link:hover {
  border-color: var(--amber);
  color: var(--ink-900);
}

.page-faq .faq-toc__link.is-active {
  background: var(--ink-700);
  border-color: var(--ink-700);
  color: var(--cream);
}

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  background: var(--card);
  border: 1px solid var(--line-soft);
  border-top: 3px solid var(--ink-700);
  border-radius: 2px;
  padding: 20px 18px 8px;
  box-shadow: var(--shadow);
  min-width: 0;
}

.page-faq .faq-group__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line-soft);
  margin-bottom: 2px;
}

.page-faq .faq-group__num {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--amber);
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 20px;
  letter-spacing: -0.01em;
  color: var(--ink-900);
}

.page-faq .faq-group__note {
  flex-basis: 100%;
  margin: 0;
  font-size: 12.5px;
  line-height: 1.8;
  color: var(--ink-soft);
}

/* ---------- 折叠问答 ---------- */
.page-faq .qa {
  border-bottom: 1px solid var(--line-soft);
}

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

.page-faq .qa__q {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  list-style: none;
  cursor: pointer;
  padding: 14px 2px 14px 12px;
  margin-left: -12px;
  border-left: 3px solid transparent;
  font-family: var(--font-head);
  font-size: 15px;
  font-weight: 700;
  line-height: 1.65;
  color: var(--ink-900);
  transition: border-color 0.18s var(--ease), background 0.18s var(--ease), color 0.18s var(--ease);
}

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

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

.page-faq .qa__q::after {
  content: "+";
  margin-left: auto;
  flex: none;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 18px;
  line-height: 1.3;
  color: var(--amber);
  transition: transform 0.2s var(--ease);
}

.page-faq .qa__q:hover {
  border-left-color: var(--amber-soft);
  color: var(--ink-700);
}

.page-faq .qa__q:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 2px;
}

.page-faq .qa[open] > .qa__q {
  border-left-color: var(--amber);
  background: linear-gradient(90deg, rgba(237, 194, 122, 0.18), rgba(237, 194, 122, 0) 72%);
  color: var(--ink-900);
}

.page-faq .qa[open] > .qa__q::after {
  transform: rotate(45deg);
}

.page-faq .qa__a {
  padding: 0 2px 16px 12px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink-soft);
}

.page-faq .qa__a p {
  margin: 0;
  max-width: 62ch;
}

.page-faq .qa__a a {
  color: var(--ink-700);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  text-decoration-color: var(--jade);
  transition: color 0.18s var(--ease), text-decoration-color 0.18s var(--ease);
}

.page-faq .qa__a a:hover {
  color: var(--jade);
  text-decoration-color: var(--amber);
}

/* ---------- 页脚前提示 ---------- */
.page-faq .faq-hint {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--faq-pad) 64px;
  display: grid;
  gap: 22px;
  min-width: 0;
}

.page-faq .faq-hint__panel {
  background: var(--ink-900);
  color: var(--cream);
  border-left: 4px solid var(--amber);
  border-radius: 2px;
  padding: 26px 22px 28px;
}

.page-faq .faq-hint__eyebrow {
  margin: 0 0 10px;
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--amber-soft);
}

.page-faq .faq-hint__title {
  margin: 0 0 12px;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(20px, 3.6vw, 28px);
  line-height: 1.35;
  letter-spacing: -0.01em;
  color: var(--cream);
}

.page-faq .faq-hint__text {
  margin: 0 0 18px;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(247, 240, 227, 0.84);
  max-width: 54ch;
}

.page-faq .faq-hint__text a {
  color: var(--amber-soft);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-hint__text a:hover {
  color: var(--cream);
}

.page-faq .faq-hint__cta {
  border-color: var(--amber-soft);
  color: var(--cream);
  background: transparent;
}

.page-faq .faq-hint__cta:hover {
  background: var(--amber-soft);
  border-color: var(--amber-soft);
  color: var(--ink-900);
}

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

.page-faq .faq-hint__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border: 1px solid var(--line-soft);
  background: var(--cream-2);
  object-fit: cover;
}

.page-faq .faq-hint__caption {
  margin-top: 10px;
  font-size: 12px;
  line-height: 1.9;
  letter-spacing: 0.04em;
  color: var(--ink-soft);
}

/* ---------- 中等宽度 ---------- */
@media (min-width: 760px) {
  .page-faq .faq-hero {
    padding-top: 36px;
    gap: 34px;
  }

  .page-faq .faq-index {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 16px;
    padding-bottom: 50px;
  }

  .page-faq .faq-index__card:nth-child(2n) {
    transform: translateY(14px);
  }

  .page-faq .faq-index__card:nth-child(2n):hover,
  .page-faq .faq-index__card:nth-child(2n):focus-visible {
    transform: translateY(12px);
  }

  .page-faq .faq-body {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 30px 28px;
    align-items: start;
  }

  .page-faq .faq-group {
    padding: 22px 20px 10px;
  }

  .page-faq .faq-hint {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.82fr);
    align-items: center;
    gap: 34px;
  }
}

/* ---------- 宽屏：右侧浮动目录 ---------- */
@media (min-width: 1080px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    align-items: start;
    gap: 52px;
    padding-top: 46px;
    padding-bottom: 16px;
  }

  .page-faq .faq-layout {
    grid-template-columns: minmax(0, 1fr) 208px;
    gap: 44px;
    align-items: start;
  }

  .page-faq .faq-toc {
    order: 0;
    position: sticky;
    top: 32px;
    background: transparent;
    border: 0;
    border-left: 1px solid var(--line-soft);
    border-radius: 0;
    padding: 4px 0 4px 14px;
  }

  .page-faq .faq-toc__label {
    margin-bottom: 12px;
  }

  .page-faq .faq-toc__list {
    flex-direction: column;
    gap: 2px;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-toc__link {
    white-space: normal;
    background: transparent;
    border: 0;
    border-left: 2px solid var(--line-soft);
    border-radius: 0;
    padding: 9px 10px;
    margin-left: -16px;
    color: var(--ink-soft);
  }

  .page-faq .faq-toc__link:hover {
    border-left-color: var(--amber-soft);
    color: var(--ink-900);
  }

  .page-faq .faq-toc__link.is-active {
    background: var(--cream-2);
    border-left-color: var(--amber);
    color: var(--ink-900);
  }

  .page-faq .faq-hint {
    gap: 48px;
    padding-bottom: 80px;
  }

  .page-faq .faq-hint__panel {
    padding: 34px 30px 36px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-index__card,
  .page-faq .qa__q,
  .page-faq .qa__q::after,
  .page-faq .faq-toc__link {
    transition: none;
  }
}