.page-faq {
  display: block;
  background: var(--ink);
  color: var(--bone);
  font-family: var(--font-sans);
  overflow-x: clip;
}

.page-faq .crumbs {
  padding: 22px 0 6px;
}

.page-faq .crumbs a {
  color: var(--muted-dark);
  text-decoration: none;
  transition: color 160ms var(--ease);
}

.page-faq .crumbs a:hover {
  color: var(--cyan);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding: clamp(20px, 3vw, 40px) 0 clamp(30px, 4.5vw, 60px);
  border-bottom: 1px solid var(--line);
  position: relative;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 1px;
  background: linear-gradient(90deg, var(--cyan), var(--violet) 46%, var(--kapok));
  opacity: 0.55;
}

.page-faq .faq-hero__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 48px);
  align-items: end;
}

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

.page-faq .faq-hero .eyebrow {
  font-family: var(--font-mono);
  font-size: var(--step-13);
  letter-spacing: 0.16em;
  color: var(--cyan);
  margin: 0;
}

.page-faq h1 {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(30px, 4.6vw, 52px);
  line-height: 1.2;
  letter-spacing: -0.01em;
  margin: 14px 0 0;
  max-width: 22ch;
}

.page-faq .faq-hero .lead {
  margin: 18px 0 0;
  max-width: 62ch;
  font-size: var(--step-17);
  line-height: 1.85;
  color: var(--muted-dark);
}

.page-faq .faq-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 30px;
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  font-size: var(--step-15);
  color: var(--muted-dark);
}

.page-faq .faq-hero__facts strong {
  font-family: var(--font-mono);
  font-size: var(--step-20);
  color: var(--cyan);
  margin-right: 6px;
  font-weight: 500;
}

.page-faq .faq-hero__figure {
  margin: 0;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--char);
}

.page-faq .faq-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: cover;
}

/* ---------- 分类筛选 ---------- */
.page-faq .faq-filter {
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
  background: var(--glass);
}

.page-faq .faq-segmented {
  display: flex;
  gap: 4px;
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
  padding: 4px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--glass);
}

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

.page-faq .faq-segmented .segmented__item {
  position: relative;
  flex: 0 0 auto;
  padding: 9px 16px 11px;
  border-radius: 999px;
  color: var(--muted-dark);
  text-decoration: none;
  font-size: var(--step-15);
  white-space: nowrap;
  transition: color 180ms var(--ease), background 180ms var(--ease);
}

.page-faq .faq-segmented .segmented__item:hover {
  color: var(--bone);
  background: var(--glass-strong);
}

.page-faq .faq-segmented .segmented__item.is-active {
  color: var(--bone);
}

.page-faq .faq-segmented .segmented__item.is-active::after {
  content: "";
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 4px;
  height: 2px;
  border-radius: 2px;
  background: var(--cyan);
}

.page-faq .faq-segmented .segmented__item:focus-visible,
.page-faq .faq-index__link:focus-visible,
.page-faq .qa__summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

/* ---------- 主体布局 ---------- */
.page-faq .faq-body {
  padding: clamp(34px, 5vw, 64px) 0 clamp(44px, 6vw, 88px);
}

.page-faq .faq-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 56px);
  align-items: start;
}

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

/* ---------- 分类块 ---------- */
.page-faq .faq-group {
  margin-bottom: clamp(34px, 5vw, 58px);
  scroll-margin-top: 118px;
}

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

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--line-strong);
}

.page-faq .faq-group__kicker {
  font-family: var(--font-mono);
  font-size: var(--step-13);
  letter-spacing: 0.12em;
  color: var(--clay);
}

.page-faq .faq-group__title {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(21px, 2.4vw, 28px);
  line-height: 1.3;
  margin: 0;
}

.page-faq .faq-group__note {
  margin: 14px 0 4px;
  max-width: 64ch;
  font-size: var(--step-15);
  line-height: 1.8;
  color: var(--muted-dark);
}

/* ---------- 手风琴 ---------- */
.page-faq .qa {
  border-bottom: 1px solid var(--line);
}

.page-faq .qa__summary {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 18px 0;
  cursor: pointer;
  list-style: none;
  color: var(--bone);
  transition: color 180ms var(--ease);
}

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

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

.page-faq .qa__summary:hover {
  color: var(--cyan);
}

.page-faq .qa__num {
  flex: 0 0 34px;
  padding-top: 4px;
  font-family: var(--font-mono);
  font-size: var(--step-13);
  color: var(--muted);
}

.page-faq .qa__q {
  flex: 1 1 auto;
  min-width: 0;
  margin: 0;
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: var(--step-17);
  line-height: 1.55;
}

.page-faq .qa__chev {
  flex: 0 0 22px;
  margin-top: 3px;
  color: var(--cyan);
  display: inline-flex;
  transition: transform 240ms var(--ease);
}

.page-faq .qa[open] .qa__chev {
  transform: rotate(180deg);
}

.page-faq .qa[open] .qa__summary {
  color: var(--cyan);
}

.page-faq .qa__answer {
  padding: 0 0 22px 46px;
  max-width: 68ch;
  font-size: var(--step-15);
  line-height: 1.9;
  color: var(--muted-dark);
  animation: faq-open 240ms var(--ease) both;
}

.page-faq .qa__answer p {
  margin: 0;
}

.page-faq .qa__answer a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 240, 182, 0.35);
  transition: border-color 160ms var(--ease);
}

.page-faq .qa__answer a:hover {
  border-bottom-color: var(--cyan);
}

@keyframes faq-open {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ---------- 侧栏索引 ---------- */
.page-faq .faq-aside {
  display: none;
}

.page-faq .faq-index {
  position: sticky;
  top: 108px;
  padding: 20px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--glass);
}

.page-faq .faq-index__title {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: var(--step-13);
  letter-spacing: 0.14em;
  color: var(--muted);
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .faq-index__link {
  display: grid;
  grid-template-columns: 12px minmax(0, 1fr) auto;
  align-items: center;
  gap: 10px;
  padding: 8px 0;
  color: var(--muted-dark);
  text-decoration: none;
  font-size: var(--step-15);
  transition: color 160ms var(--ease);
}

.page-faq .faq-index__link:hover {
  color: var(--bone);
}

.page-faq .faq-index__dot {
  width: 6px;
  height: 6px;
  margin-left: 3px;
  border-radius: 50%;
  background: var(--rock);
  transition: background 160ms var(--ease), box-shadow 160ms var(--ease);
}

.page-faq .faq-index__link:hover .faq-index__dot {
  background: var(--bone);
  box-shadow: 0 0 0 4px rgba(243, 239, 230, 0.1);
}

.page-faq .faq-index__count {
  font-family: var(--font-mono);
  font-size: var(--step-13);
  color: var(--muted);
}

/* ---------- 页尾求助 ---------- */
.page-faq .faq-help {
  border-top: 1px solid var(--line);
  background:
    radial-gradient(120% 140% at 88% 10%, rgba(138, 92, 255, 0.16), transparent 62%),
    linear-gradient(180deg, rgba(62, 92, 75, 0.22), rgba(17, 19, 18, 0.96));
  padding: clamp(40px, 6vw, 84px) 0;
}

.page-faq .faq-help__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 52px);
  align-items: center;
}

.page-faq .faq-help .eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--step-13);
  letter-spacing: 0.16em;
  color: var(--kapok);
}

.page-faq .faq-help__title {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(24px, 3.4vw, 40px);
  line-height: 1.24;
  margin: 12px 0 0;
  max-width: 20ch;
}

.page-faq .faq-help__desc {
  margin: 16px 0 0;
  max-width: 58ch;
  font-size: var(--step-15);
  line-height: 1.9;
  color: var(--muted-dark);
}

.page-faq .faq-help__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.page-faq .faq-help__figure {
  margin: 0;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line-strong);
  background: var(--char);
}

.page-faq .faq-help__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 自适应 ---------- */
@media (max-width: 600px) {
  .page-faq .crumbs {
    padding-top: 16px;
  }

  .page-faq .faq-hero__facts {
    gap: 8px 20px;
  }

  .page-faq .faq-hero__facts strong {
    font-size: var(--step-17);
  }

  .page-faq .qa__num {
    flex-basis: 26px;
  }

  .page-faq .qa__q {
    font-size: var(--step-15);
  }

  .page-faq .qa__answer {
    padding-left: 38px;
  }
}

@media (min-width: 760px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1fr) 240px;
  }

  .page-faq .faq-help__inner {
    grid-template-columns: minmax(0, 1fr) minmax(0, 420px);
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-grid {
    grid-template-columns: minmax(0, 1fr) 218px;
  }

  .page-faq .faq-aside {
    display: block;
  }

  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1fr) 280px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa__answer {
    animation: none;
  }

  .page-faq .qa__chev {
    transition: none;
  }
}