.page-faq {
  --faq-rail-w: 236px;
  background-color: var(--paper-100);
  color: var(--ink-900);
  font-family: var(--font-body);
}

/* ---------- 页首 ---------- */

.page-faq .faq-hero {
  background:
    radial-gradient(115% 85% at 86% 0%, rgba(185, 138, 62, 0.20) 0%, rgba(20, 17, 15, 0) 60%),
    linear-gradient(162deg, var(--ink-900) 0%, var(--ink-700) 100%);
  color: var(--paper-100);
  border-bottom: 1px solid var(--hairline-bronze);
  padding: clamp(36px, 7vw, 92px) 0 clamp(36px, 5vw, 76px);
}

.page-faq .faq-hero__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4vw, 52px);
  align-items: start;
}

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

.page-faq .faq-hero .breadcrumb {
  margin-bottom: 22px;
  font-size: var(--fs-14);
}

.page-faq .faq-hero .breadcrumb a {
  color: var(--bronze-200);
  text-decoration: none;
}

.page-faq .faq-hero .breadcrumb a:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-hero .eyebrow {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.24em;
  color: var(--bronze-500);
  margin: 0 0 16px;
}

.page-faq .faq-hero h1 {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(34px, 7.4vw, 64px);
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--paper-100);
  margin: 0 0 20px;
}

.page-faq .faq-hero__text {
  font-size: var(--fs-16);
  line-height: 1.9;
  color: var(--on-dark);
  max-width: 60ch;
  margin: 0 0 30px;
}

.page-faq .faq-hero__stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px 12px;
  border-top: 1px solid var(--hairline-bronze);
  padding-top: 22px;
}

.page-faq .faq-stat {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-width: 0;
}

.page-faq .faq-stat__num {
  display: inline-block;
  align-self: flex-start;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(24px, 6vw, 38px);
  font-weight: 600;
  line-height: 1;
  color: var(--paper-100);
  padding-bottom: 6px;
  border-bottom: 2px solid var(--cinnabar-600);
}

.page-faq .faq-stat__unit {
  font-size: var(--fs-14);
  font-weight: 400;
  margin-left: 0.18em;
  color: var(--on-dark-dim);
}

.page-faq .faq-stat__label {
  font-size: var(--fs-12);
  line-height: 1.6;
  color: var(--on-dark-dim);
}

.page-faq .faq-hero__figure {
  margin: 0;
  border: 1px solid var(--hairline-bronze);
  background: var(--ink-700);
  overflow: hidden;
  min-width: 0;
}

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

/* ---------- 主体 ---------- */

.page-faq .faq-body {
  padding: clamp(40px, 6vw, 84px) 0 clamp(56px, 8vw, 112px);
}

.page-faq .faq-body__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4vw, 56px);
  align-items: start;
}

.page-faq .faq-rail {
  min-width: 0;
  border-top: 2px solid var(--ink-900);
  padding-top: 20px;
}

.page-faq .faq-rail__title {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.22em;
  color: var(--mineral-500);
  margin: 0 0 14px;
}

.page-faq .faq-rail__list {
  list-style: none;
  margin: 0 0 4px;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 4px;
}

.page-faq .faq-rail__list a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 10px;
  font-size: var(--fs-14);
  line-height: 1.5;
  color: var(--ink-900);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: background-color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .faq-rail__list a:hover,
.page-faq .faq-rail__list a:focus-visible {
  background: var(--slate-100);
  border-left-color: var(--cinnabar-600);
}

.page-faq .faq-rail__list .num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: var(--fs-12);
  color: var(--bronze-700);
  flex: 0 0 auto;
}

.page-faq .faq-rail__note {
  font-size: var(--fs-14);
  line-height: 1.8;
  color: var(--mineral-500);
  margin: 18px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--hairline-ink);
}

.page-faq .faq-rail__note a {
  color: var(--bronze-700);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-panels {
  min-width: 0;
  display: grid;
  gap: clamp(34px, 5vw, 58px);
}

/* ---------- 问答组 ---------- */

.page-faq .faq-group {
  min-width: 0;
  border-top: 2px solid var(--ink-900);
  padding-top: 20px;
  scroll-margin-top: 104px;
}

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 12px;
}

.page-faq .faq-group__num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: var(--fs-22);
  line-height: 1;
  color: var(--bronze-500);
  flex: 0 0 auto;
}

.page-faq .faq-group__title {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(21px, 3.6vw, 30px);
  line-height: 1.28;
  letter-spacing: -0.005em;
  color: var(--ink-900);
  margin: 0;
}

.page-faq .faq-group__lead {
  font-size: var(--fs-16);
  line-height: 1.8;
  color: var(--bronze-700);
  margin: 0 0 18px;
  padding-left: 14px;
  border-left: 2px solid var(--bronze-200);
}

/* ---------- 折叠项 ---------- */

.page-faq .faq-list {
  border-top: 1px solid var(--hairline-ink);
}

.page-faq .faq-item {
  border-bottom: 1px solid var(--hairline-ink);
  transition: background-color var(--dur) var(--ease);
}

.page-faq .faq-item[open] {
  background: rgba(225, 232, 237, 0.46);
}

.page-faq .faq-item__summary {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  padding: 17px 12px 17px 4px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-head);
  font-size: var(--fs-16);
  font-weight: 700;
  line-height: 1.55;
  color: var(--ink-900);
}

.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__q {
  color: var(--bronze-700);
}

.page-faq .faq-item__q {
  min-width: 0;
  transition: color var(--dur) var(--ease);
}

.page-faq .faq-item__mark {
  position: relative;
  flex: 0 0 auto;
  width: 16px;
  height: 16px;
  margin-top: 7px;
}

.page-faq .faq-item__mark::before,
.page-faq .faq-item__mark::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  background: var(--bronze-500);
  transition: transform var(--dur) var(--ease), opacity var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-faq .faq-item__mark::before {
  width: 16px;
  height: 2px;
}

.page-faq .faq-item__mark::after {
  width: 2px;
  height: 16px;
}

.page-faq .faq-item[open] .faq-item__mark::before {
  background: var(--cinnabar-600);
}

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

.page-faq .faq-item__body {
  padding: 0 30px 20px 4px;
  font-size: var(--fs-16);
  line-height: 1.85;
  color: var(--ink-700);
}

.page-faq .faq-item__body p {
  margin: 0 0 12px;
  max-width: 70ch;
}

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

.page-faq .faq-item__body a {
  color: var(--bronze-700);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 时效示意图 ---------- */

.page-faq .faq-figure {
  margin: 22px 0 0;
  border: 1px solid var(--hairline-ink);
  border-left: 3px solid var(--slate-600);
  background: var(--slate-100);
}

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

.page-faq .faq-figure figcaption {
  padding: 14px 18px;
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--slate-600);
  border-top: 1px solid rgba(76, 101, 119, 0.22);
}

/* ---------- 自查清单与行动 ---------- */

.page-faq .faq-checklist {
  margin-top: 24px;
  padding: 22px 20px 22px;
  background: var(--slate-100);
  border-left: 3px solid var(--bronze-500);
}

.page-faq .faq-checklist__title {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.18em;
  color: var(--slate-600);
  margin: 0 0 16px;
}

.page-faq .faq-checklist__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .faq-checklist__list li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px;
  font-size: var(--fs-16);
  line-height: 1.75;
  color: var(--ink-900);
}

.page-faq .faq-checklist__list .num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: var(--fs-14);
  line-height: 1.9;
  color: var(--bronze-700);
}

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

.page-faq .faq-cta .btn {
  text-decoration: none;
}

/* ---------- 响应式 ---------- */

@media (min-width: 700px) {
  .page-faq .faq-hero__text {
    font-size: var(--fs-18);
  }

  .page-faq .faq-item__summary {
    font-size: var(--fs-18);
    padding: 20px 16px 20px 6px;
  }

  .page-faq .faq-item__body {
    padding: 0 40px 24px 6px;
  }

  .page-faq .faq-checklist {
    padding: 26px 28px 26px;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    gap: clamp(40px, 5vw, 72px);
  }

  .page-faq .faq-body__inner {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
    gap: clamp(36px, 4vw, 64px);
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 104px;
  }

  .page-faq .faq-rail__list {
    grid-template-columns: minmax(0, 1fr);
    gap: 2px;
    margin-bottom: 6px;
  }

  .page-faq .faq-rail__list a {
    font-size: var(--fs-16);
    padding: 10px 12px;
  }

  .page-faq .faq-group {
    scroll-margin-top: 116px;
  }
}

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