.page-faq {
  --faq-gap: 20px;
  --faq-answer-pad: 18px;
  display: block;
  background: var(--ink-900);
  color: var(--silver);
}

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

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: 28px 0 4px;
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -180px;
  right: -140px;
  width: 380px;
  height: 380px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--grass-dim), transparent 68%);
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  display: grid;
  gap: 26px;
}

.page-faq .faq-hero__lead h1 {
  margin: 10px 0 0;
  font-family: var(--font-title);
  font-size: 30px;
  line-height: 1.24;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--frost);
}

.page-faq .faq-hero__lead .lede {
  margin: 16px 0 0;
  max-width: 44em;
}

.page-faq .faq-hero__stats {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
}

.page-faq .faq-hero__stats li {
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--ink-800);
  padding: 14px 16px;
  display: grid;
  gap: 5px;
  align-content: start;
}

.page-faq .faq-stat__num {
  font-size: 28px;
  font-weight: 700;
  line-height: 1;
  color: var(--grass);
}

.page-faq .faq-stat__label {
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--mist);
}

.page-faq .faq-hero__line {
  display: block;
  width: 100%;
  height: 42px;
  margin-top: 22px;
  opacity: 0.55;
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-body {
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
  padding: 30px 0 72px;
}

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

.page-faq .faq-toc__label {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--mist);
}

.page-faq .faq-toc__list {
  list-style: none;
  margin: 0;
  padding: 0 0 6px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

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

.page-faq .faq-toc__list a {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  white-space: nowrap;
  padding: 9px 15px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--ink-800);
  color: var(--silver);
  font-size: 14px;
  text-decoration: none;
  transition: border-color 200ms ease, color 200ms ease, background 200ms ease;
}

.page-faq .faq-toc__list a .num {
  font-size: 12px;
  color: var(--grass);
}

.page-faq .faq-toc__list a:hover,
.page-faq .faq-toc__list a:focus-visible {
  border-color: var(--grass-line);
  color: var(--grass);
}

/* ---------- 分组 ---------- */
.page-faq .faq-main {
  min-width: 0;
  display: grid;
  gap: 46px;
}

.page-faq .faq-group {
  scroll-margin-top: 92px;
}

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

.page-faq .faq-group__index {
  padding-top: 4px;
  font-size: 15px;
  letter-spacing: 0.06em;
  color: var(--grass);
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-title);
  font-size: 22px;
  line-height: 1.3;
  font-weight: 700;
  color: var(--frost);
}

.page-faq .faq-group__note {
  margin: 6px 0 0;
  font-size: 14px;
  line-height: 1.6;
  color: var(--mist);
}

/* ---------- 手风琴 ---------- */
.page-faq .faq-list {
  display: grid;
  gap: 10px;
}

.page-faq .faq-item {
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--ink-800);
  overflow: hidden;
  transition: border-color 220ms ease, background 220ms ease;
}

.page-faq .faq-item[open] {
  border-color: var(--grass-line);
  background: var(--ink-700);
}

.page-faq .faq-item > summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 15px var(--faq-answer-pad);
  font-family: var(--font-title);
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--silver);
}

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

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

.page-faq .faq-item > summary:hover .faq-item__mark,
.page-faq .faq-item > summary:focus-visible .faq-item__mark {
  border-color: var(--grass-line);
}

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

.page-faq .faq-item__mark {
  position: relative;
  flex: 0 0 auto;
  margin-left: auto;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  border: 1px solid var(--line);
  transition: border-color 200ms ease, background 200ms ease;
}

.page-faq .faq-item__mark::before,
.page-faq .faq-item__mark::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: var(--grass);
  border-radius: 2px;
  transition: opacity 200ms ease, transform 200ms ease;
}

.page-faq .faq-item__mark::before {
  width: 10px;
  height: 2px;
}

.page-faq .faq-item__mark::after {
  width: 2px;
  height: 10px;
}

.page-faq .faq-item[open] .faq-item__mark {
  background: var(--grass-dim);
  border-color: var(--grass-line);
}

.page-faq .faq-item[open] .faq-item__mark::after {
  opacity: 0;
  transform: translate(-50%, -50%) rotate(90deg);
}

.page-faq .faq-item__body {
  padding: 0 var(--faq-answer-pad) 20px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--mist);
}

.page-faq .faq-item__body p {
  margin: 0 0 12px;
}

.page-faq .faq-item__body p:last-child {
  margin-bottom: 0;
}

.page-faq .faq-item__body a {
  color: var(--grass);
  text-decoration: none;
  border-bottom: 1px solid var(--grass-line);
}

.page-faq .faq-item__body a:hover,
.page-faq .faq-item__body a:focus-visible {
  color: var(--frost);
  border-bottom-color: var(--frost);
}

.page-faq .faq-key {
  color: var(--silver);
  font-weight: 600;
}

.page-faq .faq-steps {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 9px;
}

.page-faq .faq-steps li {
  display: flex;
  gap: 10px;
  align-items: baseline;
  font-size: 14px;
  line-height: 1.65;
}

.page-faq .faq-steps__no {
  flex: 0 0 auto;
  color: var(--grass);
  font-size: 13px;
}

.page-faq .faq-tip {
  margin-top: 14px;
  padding: 12px 14px;
  border-radius: var(--r-sm);
  border-left: 3px solid var(--grass);
  background: var(--grass-dim);
  color: var(--silver);
  font-size: 14px;
  line-height: 1.7;
}

/* ---------- 图文错位 ---------- */
.page-faq .faq-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--faq-gap);
}

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

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

.page-faq .faq-figure--portrait img {
  aspect-ratio: 3 / 4;
}

.page-faq .faq-figure--landscape img {
  aspect-ratio: 3 / 2;
}

/* ---------- 结尾引导 ---------- */
.page-faq .faq-cta {
  display: grid;
  gap: 18px;
  padding: 26px 22px;
  border-radius: var(--r-lg);
  border: 1px solid var(--line);
  background: linear-gradient(140deg, var(--ink-800), var(--ink-900));
}

.page-faq .faq-cta__title {
  margin: 0;
  font-family: var(--font-title);
  font-size: 22px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--frost);
}

.page-faq .faq-cta__copy p {
  margin: 10px 0 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--mist);
}

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

/* ---------- 响应式 ---------- */
@media (min-width: 520px) {
  .page-faq .faq-hero__stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-hero__lead h1 {
    font-size: 36px;
  }
}

@media (min-width: 820px) {
  .page-faq .faq-split {
    grid-template-columns: minmax(0, 1fr) 250px;
    align-items: start;
  }

  .page-faq .faq-split--wide {
    grid-template-columns: minmax(0, 1fr) 320px;
  }

  .page-faq .faq-group__title {
    font-size: 25px;
  }

  .page-faq .faq-cta {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    padding: 30px 32px;
  }

  .page-faq .faq-cta__actions {
    flex-wrap: nowrap;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero {
    padding-top: 44px;
  }

  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    gap: 44px;
    align-items: end;
  }

  .page-faq .faq-hero__lead h1 {
    font-size: 46px;
    max-width: 15em;
  }

  .page-faq .faq-body {
    grid-template-columns: 216px minmax(0, 1fr);
    gap: 52px;
    padding-top: 44px;
  }

  .page-faq .faq-toc {
    position: sticky;
    top: 96px;
  }

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

  .page-faq .faq-toc__list a {
    width: 100%;
    white-space: normal;
    padding: 9px 12px;
    border-radius: var(--r-sm);
    border-color: transparent;
    background: transparent;
  }

  .page-faq .faq-toc__list a:hover,
  .page-faq .faq-toc__list a:focus-visible {
    background: var(--ink-800);
    border-color: var(--line);
  }
}

@media (min-width: 1120px) {
  .page-faq .faq-hero__lead h1 {
    font-size: 52px;
  }

  .page-faq .faq-group__title {
    font-size: 27px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item,
  .page-faq .faq-item__mark,
  .page-faq .faq-item__mark::before,
  .page-faq .faq-item__mark::after,
  .page-faq .faq-toc__list a {
    transition: none;
  }
}