.page-faq {
  --faq-gap: clamp(20px, 3vw, 32px);
  --faq-radius: 2px;
  padding-block: clamp(20px, 3vw, 34px) clamp(52px, 7vw, 96px);
}

.page-faq .crumbs {
  margin-bottom: clamp(16px, 2vw, 24px);
}

/* ---------- 顶部提示条 ---------- */
.page-faq .faq-notice {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 16px;
  padding: 12px 16px;
  background: var(--indigo-900);
  border: var(--edge);
  border-radius: var(--faq-radius);
  box-shadow: 6px 6px 0 var(--stone-300);
  margin-bottom: var(--faq-gap);
}

.page-faq .faq-notice__text {
  flex: 1 1 240px;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.7;
  letter-spacing: 0.04em;
  color: var(--gold-100);
}

.page-faq .faq-notice__copy {
  flex: 0 0 auto;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  max-width: 780px;
  padding-bottom: clamp(20px, 3vw, 30px);
  border-bottom: 2px solid var(--indigo-900);
  margin-bottom: var(--faq-gap);
}

.page-faq .faq-hero__eyebrow {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: var(--label);
  text-transform: uppercase;
  color: var(--graphite-600);
}

.page-faq .faq-hero__title {
  margin: 0 0 16px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(30px, 6.2vw, 56px);
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: var(--indigo-900);
}

.page-faq .faq-hero__lead {
  margin: 0 0 18px;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--graphite-600);
}

.page-faq .faq-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-hero__meta li {
  padding: 5px 10px;
  border: 1px solid var(--stone-300);
  border-radius: var(--faq-radius);
  background: var(--paper);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--graphite-600);
}

.page-faq .faq-hero__meta .data-num {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--indigo-700);
}

/* ---------- 布局 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--faq-gap);
  align-items: start;
}

/* ---------- 左侧分组目录 ---------- */
.page-faq .faq-rail {
  padding: 14px 14px 12px;
  background: var(--paper);
  border: var(--edge);
  border-radius: var(--faq-radius);
  box-shadow: 6px 6px 0 var(--stone-300);
}

.page-faq .faq-rail__title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: var(--label);
  text-transform: uppercase;
  color: var(--graphite-600);
}

.page-faq .faq-rail__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 4px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-faq .faq-rail__item {
  flex: 0 0 auto;
}

.page-faq .faq-rail__link {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 12px;
  border: 2px solid var(--stone-300);
  border-radius: var(--faq-radius);
  background: var(--paper-50);
  color: var(--indigo-900);
  font-size: 13px;
  line-height: 1.2;
  white-space: nowrap;
  text-decoration: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
}

.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  border-color: var(--indigo-700);
  background: var(--indigo-100);
  box-shadow: 4px 4px 0 var(--gold-500);
  outline: none;
}

.page-faq .faq-rail__link .rail__count {
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 1px 5px;
  border-radius: var(--faq-radius);
  background: var(--indigo-900);
  color: var(--gold-100);
}

/* ---------- 问题分组 ---------- */
.page-faq .faq-groups {
  display: grid;
  gap: clamp(22px, 3vw, 34px);
  min-width: 0;
}

.page-faq .faq-group {
  scroll-margin-top: 20px;
  padding: clamp(16px, 2.4vw, 24px);
  background: var(--paper);
  border: var(--edge);
  border-radius: var(--faq-radius);
  box-shadow: 6px 6px 0 var(--stone-300);
}

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding-left: 12px;
  border-left: 4px solid var(--indigo-700);
  transition: border-color 0.2s ease;
}

.page-faq .faq-group:target .faq-group__head {
  border-left-color: var(--red-600);
}

.page-faq .faq-group__index {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--gold-500);
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(19px, 3vw, 26px);
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--indigo-900);
}

.page-faq .faq-group__note {
  margin: 10px 0 16px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--graphite-600);
}

/* ---------- 问答条目 ---------- */
.page-faq .faq-list {
  display: grid;
  gap: 10px;
}

.page-faq .faq-item {
  border: 2px solid var(--stone-300);
  border-radius: var(--faq-radius);
  background: var(--paper-50);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.page-faq .faq-item[open] {
  border-color: var(--indigo-900);
  background: var(--paper);
  box-shadow: 4px 4px 0 var(--indigo-100);
}

.page-faq .faq-item__q {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 13px 14px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 15px;
  line-height: 1.55;
  color: var(--graphite-600);
  transition: color 0.2s ease;
}

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

.page-faq .faq-item__q:hover,
.page-faq .faq-item__q:focus-visible {
  color: var(--indigo-700);
  outline: none;
}

.page-faq .faq-item[open] .faq-item__q {
  color: var(--indigo-900);
}

.page-faq .faq-item__arrow {
  flex: 0 0 auto;
  width: 16px;
  font-family: var(--font-mono);
  font-size: 17px;
  line-height: 1.35;
  color: var(--indigo-700);
  transition: transform 0.22s ease;
}

.page-faq .faq-item[open] .faq-item__arrow {
  transform: rotate(90deg);
}

.page-faq .faq-item__a {
  padding: 0 14px 15px 40px;
}

.page-faq .faq-item__a p {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--graphite-600);
}

.page-faq .faq-item__a a {
  color: var(--indigo-500);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-item__a a:hover,
.page-faq .faq-item__a a:focus-visible {
  color: var(--red-600);
}

/* ---------- 步骤列表 ---------- */
.page-faq .faq-steps {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: faq-step;
  display: grid;
  gap: 8px;
}

.page-faq .faq-steps li {
  position: relative;
  counter-increment: faq-step;
  padding-left: 34px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--graphite-600);
}

.page-faq .faq-steps li::before {
  content: counter(faq-step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 3px;
  padding: 0 5px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--indigo-900);
  background: var(--gold-100);
  border: 1px solid var(--gold-500);
  border-radius: var(--faq-radius);
}

/* ---------- 图 ---------- */
.page-faq .faq-figure {
  margin: 18px 0 0;
}

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

/* ---------- 收尾联系块 ---------- */
.page-faq .faq-callout {
  margin-top: 18px;
  padding: 16px;
  background: var(--red-50);
  border: 2px solid var(--red-600);
  border-radius: var(--faq-radius);
  box-shadow: 6px 6px 0 var(--stone-300);
}

.page-faq .faq-callout__label {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: var(--label);
  text-transform: uppercase;
  color: var(--red-600);
}

.page-faq .faq-callout__text {
  margin: 0 0 14px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--indigo-900);
}

.page-faq .faq-callout__text .data-num {
  font-family: var(--font-mono);
  font-size: 13px;
  word-break: break-all;
  padding: 1px 4px;
  background: var(--paper);
  border: 1px solid var(--stone-300);
  border-radius: var(--faq-radius);
}

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

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-faq .faq-item__q {
    font-size: 16px;
    padding: 15px 18px;
  }

  .page-faq .faq-item__a {
    padding: 0 18px 17px 44px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-layout {
    grid-template-columns: 238px minmax(0, 1fr);
    gap: clamp(24px, 3vw, 40px);
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 16px;
  }

  .page-faq .faq-rail__list {
    display: grid;
    gap: 6px;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-rail__item {
    flex: none;
  }

  .page-faq .faq-rail__link {
    justify-content: space-between;
    white-space: normal;
    padding: 10px 12px;
  }

  .page-faq .faq-group {
    padding: clamp(20px, 2.4vw, 28px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item__arrow,
  .page-faq .faq-item__q,
  .page-faq .faq-rail__link,
  .page-faq .faq-group__head {
    transition: none;
  }
}
<<<END>>>