.page-faq {
  --faq-indent: 58px;
  --faq-rail: 260px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding: 36px 0 72px;
  border-bottom: 1px solid var(--line);
}

.page-faq .crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-bottom: 44px;
  font-size: var(--fs-6);
  color: var(--fg-2);
}

.page-faq .crumbs__item {
  color: inherit;
  text-decoration: none;
}

.page-faq .crumbs__item + .crumbs__item::before {
  content: "/";
  margin-right: 10px;
  color: var(--line);
}

.page-faq .crumbs__item[aria-current="page"] {
  color: var(--cyan);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: 40px;
}

.page-faq .faq-tally {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border-radius: var(--r-sm);
  overflow: hidden;
}

.page-faq .faq-tally li {
  background: var(--ink-2);
  padding: 16px 18px;
  display: grid;
  gap: 8px;
}

.page-faq .faq-tally__num {
  font-size: var(--fs-3);
  line-height: 1;
  color: var(--fg);
}

.page-faq .faq-tally__label {
  font-size: var(--fs-6);
  color: var(--fg-2);
}

.page-faq h1 {
  margin: 0 0 24px;
  font-family: var(--font-display);
  font-size: var(--fs-1);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--fg);
  text-shadow: 0 0 20px rgba(122, 59, 255, 0.5), 0 0 40px rgba(0, 229, 255, 0.16);
}

.page-faq .lede {
  max-width: 62ch;
  color: var(--fg);
}

.page-faq .faq-hero__hint {
  margin: 24px 0 0;
  padding-left: 16px;
  border-left: 2px solid var(--violet);
  max-width: 52ch;
  font-size: var(--fs-6);
  line-height: 1.7;
  color: var(--fg-2);
}

/* ---------- 分组导航 ---------- */
.page-faq .faq-index__grid {
  display: grid;
  gap: 44px;
}

.page-faq .faq-index__desc {
  margin: 18px 0 0;
  max-width: 46ch;
  font-size: var(--fs-5);
  line-height: 1.75;
  color: var(--fg-2);
}

.page-faq .faq-pills {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 28px 0 0;
  padding: 0;
}

.page-faq .faq-pill {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 18px;
  border-radius: var(--r-pill);
  border: 1px solid var(--line);
  background: var(--ink-2);
  color: var(--fg);
  font-size: var(--fs-6);
  text-decoration: none;
  transition: background 0.25s ease, border-color 0.25s ease,
    box-shadow 0.25s ease, color 0.25s ease;
}

.page-faq .faq-pill__idx {
  color: var(--violet);
  font-size: 12px;
  letter-spacing: 0.08em;
  transition: color 0.25s ease;
}

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

.page-faq .faq-pill:hover,
.page-faq .faq-pill:focus-visible {
  background: var(--violet);
  border-color: var(--violet);
  box-shadow: 0 10px 30px -12px rgba(122, 59, 255, 0.9);
}

.page-faq .faq-pill:hover .faq-pill__idx,
.page-faq .faq-pill:focus-visible .faq-pill__idx {
  color: var(--fg);
}

/* ---------- 分组与条目 ---------- */
.page-faq .faq-group {
  padding: 72px 0 8px;
  scroll-margin-top: 128px;
}

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-group__code {
  font-size: var(--fs-6);
  color: var(--violet);
  letter-spacing: 0.1em;
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: var(--fs-3);
  color: var(--fg);
}

.page-faq .faq-group__count {
  margin-left: auto;
  font-size: var(--fs-6);
  color: var(--fg-2);
}

.page-faq .faq-group__lead {
  margin: 26px 0 4px;
  padding-left: 18px;
  border-left: 2px solid var(--cyan);
  max-width: 60ch;
  font-size: var(--fs-5);
  line-height: 1.75;
  color: var(--fg-2);
}

.page-faq .faq-group__figure {
  margin: 30px 0 8px;
  max-width: 380px;
}

.page-faq .faq-group__list {
  margin-top: 6px;
}

.page-faq .faq-item {
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-details {
  position: relative;
}

.page-faq .faq-details::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--grad);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.page-faq .faq-details[open]::before {
  opacity: 1;
}

.page-faq .faq-summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 14px;
  align-items: start;
  padding: 20px 8px;
  cursor: pointer;
  list-style: none;
  transition: background 0.25s ease;
}

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

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

.page-faq .faq-details[open] > .faq-summary {
  background: var(--ink-2);
}

.page-faq .faq-q {
  padding-top: 5px;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--cyan);
  white-space: nowrap;
}

.page-faq .faq-question {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: var(--fs-4);
  line-height: 1.5;
  color: var(--fg);
}

.page-faq .faq-sign {
  position: relative;
  width: 18px;
  height: 18px;
  margin-top: 5px;
  flex: none;
}

.page-faq .faq-sign::before,
.page-faq .faq-sign::after {
  content: "";
  position: absolute;
  background: var(--violet);
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.page-faq .faq-sign::before {
  left: 0;
  top: 8px;
  width: 18px;
  height: 2px;
}

.page-faq .faq-sign::after {
  left: 8px;
  top: 0;
  width: 2px;
  height: 18px;
}

.page-faq .faq-details[open] .faq-sign::after {
  transform: scaleY(0);
  opacity: 0;
}

.page-faq .faq-answer {
  padding: 0 8px 26px;
  max-width: 62ch;
}

.page-faq .faq-answer p {
  margin: 0;
  font-size: var(--fs-5);
  line-height: 1.78;
  color: var(--fg-2);
}

.page-faq .faq-more {
  margin-top: 16px;
}

.page-faq .faq-more a {
  display: inline-block;
  font-size: var(--fs-6);
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 229, 255, 0.35);
  padding-bottom: 2px;
  transition: border-color 0.25s ease;
}

.page-faq .faq-more a::after {
  content: "→";
  margin-left: 8px;
}

.page-faq .faq-more a:hover,
.page-faq .faq-more a:focus-visible {
  border-color: var(--cyan);
}

/* ---------- 出口条 ---------- */
.page-faq .faq-exit {
  padding: 96px 0 8px;
}

.page-faq .faq-exit__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 22px 32px;
  padding: 30px 32px;
  border-radius: var(--r-lg);
  background: var(--ink-3);
  border: 1px solid var(--line);
}

.page-faq .faq-exit__text {
  margin: 0;
  max-width: 52ch;
  font-size: var(--fs-5);
  line-height: 1.7;
  color: var(--fg);
}

.page-faq .faq-exit__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-faq .faq-hero {
    padding: 48px 0 88px;
  }

  .page-faq .faq-answer {
    margin-left: var(--faq-indent);
    max-width: 58ch;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
    gap: 76px;
    align-items: start;
  }

  .page-faq .faq-tally {
    grid-template-columns: 1fr;
  }

  .page-faq .faq-index__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: 72px;
    align-items: center;
  }

  .page-faq .faq-group {
    padding-top: 104px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-sign::before,
  .page-faq .faq-sign::after,
  .page-faq .faq-details::before,
  .page-faq .faq-summary,
  .page-faq .faq-pill,
  .page-faq .faq-pill__idx,
  .page-faq .faq-more a {
    transition: none;
  }
}