.page-faq {
  --faq-line: rgba(11, 59, 60, 0.16);
  --faq-card: var(--paper-200);
  display: block;
  padding-bottom: var(--step);
}

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

.page-faq img {
  max-width: 100%;
  height: auto;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding-top: var(--step);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: 1.25rem;
}

.page-faq .faq-hero__dark {
  position: relative;
  background: var(--teal-900);
  background-image: var(--grain-dark);
  color: var(--paper-100);
  border-radius: var(--radius-lg) var(--radius-lg) 4rem var(--radius-lg);
  padding: clamp(1.5rem, 5vw, 3rem);
  overflow: hidden;
}

.page-faq .faq-hero__dark::after {
  content: "";
  position: absolute;
  right: -2.5rem;
  bottom: -3.5rem;
  width: 11rem;
  height: 11rem;
  border-radius: 50%;
  background: var(--teal-700);
  opacity: 0.7;
}

.page-faq .faq-hero__dark .eyebrow {
  color: var(--orange-300);
}

.page-faq .faq-hero__dark h1 {
  position: relative;
  z-index: 1;
  margin: 0.5rem 0 0;
  font-family: var(--font-head);
  font-size: clamp(2rem, 7vw, 3.4rem);
  line-height: 1.1;
  letter-spacing: -0.01em;
}

.page-faq .faq-hero__light {
  display: grid;
  gap: 1.125rem;
  align-content: start;
}

.page-faq .faq-hero__light .lead {
  margin: 0;
}

.page-faq .faq-index {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.9rem;
  border: 1px solid var(--faq-line);
  border-radius: var(--radius-pill);
  background: var(--paper-200);
  color: var(--ink-900);
  font-family: var(--font-body);
  font-size: 0.875rem;
  text-decoration: none;
  transition: border-color 160ms ease, background-color 160ms ease, transform 160ms ease;
}

.page-faq .faq-chip .mono {
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
  color: var(--orange-500);
}

.page-faq .faq-chip:hover,
.page-faq .faq-chip:focus-visible {
  border-color: var(--orange-500);
  background: var(--paper-100);
  transform: translateY(-1px);
}

.page-faq .faq-hero__figure {
  margin: 1.5rem 0 0;
}

/* ---------- 分组带 ---------- */
.page-faq .faq-group {
  scroll-margin-top: 4.5rem;
}

.page-faq .faq-band {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.7rem 0.9rem;
  border-radius: var(--radius-md);
  background-color: var(--teal-900);
  background-image: repeating-linear-gradient(
      115deg,
      rgba(243, 237, 226, 0.08) 0 6px,
      rgba(243, 237, 226, 0) 6px 16px
    ),
    linear-gradient(100deg, var(--teal-900), var(--teal-700));
  color: var(--paper-100);
}

.page-faq .faq-band__num {
  flex: none;
  padding: 0.2rem 0.55rem;
  border-radius: var(--radius-pill);
  background: var(--orange-500);
  color: var(--ink-900);
  font-size: 0.75rem;
  font-weight: 700;
}

.page-faq .faq-band__title {
  margin: 0;
  flex: 1 1 auto;
  font-family: var(--font-head);
  font-size: clamp(1.25rem, 3.4vw, 1.6rem);
  line-height: 1.2;
  letter-spacing: -0.01em;
}

.page-faq .faq-band__hint {
  flex: none;
  display: none;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--orange-300);
}

.page-faq .faq-group:target .faq-band {
  outline: 2px solid var(--orange-500);
  outline-offset: 3px;
}

/* ---------- 折叠条目 ---------- */
.page-faq .faq-list {
  display: grid;
  gap: 0.65rem;
  margin-top: 1rem;
}

.page-faq .qa {
  border: 1px solid var(--faq-line);
  border-radius: var(--radius-md);
  background: var(--faq-card);
  overflow: hidden;
  transition: border-color 160ms ease;
}

.page-faq .qa:hover {
  border-color: rgba(11, 59, 60, 0.34);
}

.page-faq .qa[open] {
  border-color: var(--orange-300);
  background: var(--paper-100);
}

.page-faq .qa__summary {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 0.7rem;
  padding: 0.9rem 1rem;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-head);
  font-size: 1.0625rem;
  font-weight: 700;
  line-height: 1.35;
  color: var(--ink-900);
}

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

.page-faq .qa__summary:focus-visible {
  outline: 2px solid var(--orange-500);
  outline-offset: -2px;
}

.page-faq .qa__idx {
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
  color: var(--orange-500);
}

.page-faq .qa__mark {
  position: relative;
  width: 1.15rem;
  height: 1.15rem;
  border: 1px solid var(--orange-300);
  border-radius: 50%;
}

.page-faq .qa__mark::before,
.page-faq .qa__mark::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  background: var(--orange-500);
  transform: translate(-50%, -50%);
}

.page-faq .qa__mark::before {
  width: 0.55rem;
  height: 2px;
}

.page-faq .qa__mark::after {
  width: 2px;
  height: 0.55rem;
  transition: transform 180ms ease;
}

.page-faq .qa[open] .qa__mark::after {
  transform: translate(-50%, -50%) scaleY(0);
}

.page-faq .qa__body {
  padding: 0 1rem 1.1rem;
  color: var(--ink-900);
}

.page-faq .qa__body p {
  margin: 0 0 0.6rem;
  max-width: 68ch;
  font-size: 0.9375rem;
  line-height: 1.75;
}

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

.page-faq .qa__body a {
  color: var(--teal-700);
  text-decoration: underline;
  text-decoration-color: var(--orange-300);
  text-underline-offset: 3px;
}

.page-faq .qa__body a:hover {
  color: var(--orange-500);
}

.page-faq .qa__note {
  border-left: 3px solid var(--orange-500);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  background: var(--paper-200);
  padding: 0.6rem 0.85rem;
  font-size: 0.875rem !important;
  color: var(--ink-900);
}

.page-faq .qa__body .legend {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.35rem;
}

/* ---------- 双栏组 ---------- */
.page-faq .faq-split {
  display: grid;
  gap: 1.25rem;
  margin-top: 0;
}

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

/* ---------- 结尾区块 ---------- */
.page-faq .faq-next-wrap {
  padding-top: 0;
}

.page-faq .faq-next {
  background: var(--teal-900);
  background-image: var(--grain-dark);
  color: var(--paper-100);
  border-radius: 3rem var(--radius-lg) var(--radius-lg) var(--radius-lg);
  padding: clamp(1.5rem, 5vw, 2.75rem);
}

.page-faq .faq-next .eyebrow {
  color: var(--orange-300);
}

.page-faq .faq-next h2 {
  margin: 0.4rem 0 0.75rem;
  font-family: var(--font-head);
  font-size: clamp(1.5rem, 4.4vw, 2.1rem);
  line-height: 1.15;
}

.page-faq .faq-next p {
  margin: 0 0 1.25rem;
  max-width: 62ch;
  line-height: 1.75;
}

.page-faq .faq-next__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin: 0;
}

/* ---------- 桌面 ---------- */
@media (min-width: 56rem) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 0;
    align-items: stretch;
  }

  .page-faq .faq-hero__light {
    padding: 0.5rem 0 0.5rem 2rem;
  }

  .page-faq .faq-band__hint {
    display: inline-block;
  }

  .page-faq .faq-split {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
    gap: 1.75rem;
    margin-top: 1rem;
  }

  .page-faq .faq-split .faq-list {
    margin-top: 0;
  }
}

@media (min-width: 76rem) {
  .page-faq .faq-split__figure {
    position: sticky;
    top: 5rem;
  }

  .page-faq .qa__summary {
    font-size: 1.125rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-chip,
  .page-faq .qa,
  .page-faq .qa__mark::after {
    transition: none;
  }

  .page-faq .faq-chip:hover,
  .page-faq .faq-chip:focus-visible {
    transform: none;
  }
}