.page-faq {
  --faq-sticky-top: 84px;
  --faq-rule: rgba(11, 59, 76, 0.12);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding: clamp(26px, 5vw, 54px) 0 clamp(18px, 3vw, 30px);
}

.page-faq .faq-hero__title {
  margin: 14px 0 0;
  font-size: clamp(29px, 5.4vw, 52px);
  line-height: 1.14;
  letter-spacing: -0.012em;
  color: var(--hb-deep);
  max-width: 18ch;
}

.page-faq .faq-hero__lede {
  margin: 18px 0 0;
  max-width: 60ch;
  font-size: clamp(16px, 2.1vw, 19px);
  line-height: 1.78;
  color: var(--hb-stone);
}

.page-faq .faq-hero__facts {
  margin: clamp(24px, 4vw, 38px) 0 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 1px;
  background: var(--faq-rule);
  border: 1px solid var(--faq-rule);
  border-radius: var(--hb-radius-md);
  overflow: hidden;
}

.page-faq .faq-hero__fact {
  background: var(--hb-cream);
  padding: 16px 18px;
}

.page-faq .faq-hero__fact dt {
  font-size: 12.5px;
  letter-spacing: 0.08em;
  color: var(--hb-stone);
}

.page-faq .faq-hero__fact dd {
  margin: 7px 0 0;
  font-size: 19px;
  color: var(--hb-brass);
}

.page-faq .faq-hero__fact .hb-mono {
  font-size: 18px;
  letter-spacing: 0.02em;
}

/* ---------- 通栏图 ---------- */
.page-faq .faq-band {
  padding: 0 clamp(18px, 5vw, 48px);
}

.page-faq .faq-band .hb-media {
  border-radius: var(--hb-radius-lg);
  overflow: hidden;
}

.page-faq .faq-band .hb-media__cap {
  display: block;
  padding: 10px 0 0;
}

/* ---------- 主体分栏 ---------- */
.page-faq .faq-body {
  padding-top: clamp(30px, 5vw, 56px);
}

.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 46px);
}

/* 左侧目录 */
.page-faq .faq-toc {
  border: 1px solid var(--hb-line);
  border-radius: var(--hb-radius-md);
  background: var(--hb-white);
  padding: 16px 14px 14px;
}

.page-faq .faq-toc__label {
  margin: 0 0 10px;
  font-size: 11.5px;
  letter-spacing: 0.16em;
  color: var(--hb-mist);
}

.page-faq .faq-toc__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.page-faq .faq-toc__link {
  display: flex;
  align-items: baseline;
  gap: 9px;
  padding: 9px 12px;
  border-radius: var(--hb-radius-sm);
  border-left: 2px solid transparent;
  font-size: 14.5px;
  line-height: 1.4;
  color: var(--hb-text);
  text-decoration: none;
  transition: background-color 180ms var(--hb-ease), border-color 180ms var(--hb-ease), color 180ms var(--hb-ease);
}

.page-faq .faq-toc__link:hover,
.page-faq .faq-toc__link:focus-visible {
  background: var(--hb-cream);
  border-left-color: var(--hb-brass);
  color: var(--hb-deep);
}

.page-faq .faq-toc__num {
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--hb-brass);
}

.page-faq .faq-toc__aside {
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px dashed var(--hb-line);
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--hb-stone);
}

/* ---------- 问答组 ---------- */
.page-faq .faq-stream {
  min-width: 0;
}

.page-faq .faq-group {
  margin-bottom: clamp(34px, 5vw, 56px);
  scroll-margin-top: 104px;
}

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--hb-line);
  margin-bottom: 4px;
}

.page-faq .faq-group__num {
  font-size: 12.5px;
  letter-spacing: 0.14em;
  color: var(--hb-brass);
}

.page-faq .faq-group__title {
  margin: 0;
  font-size: clamp(21px, 2.8vw, 28px);
  line-height: 1.3;
  color: var(--hb-deep);
}

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

.page-faq .faq-item__q {
  display: flex;
  align-items: stretch;
  gap: 13px;
  padding: 0;
  cursor: pointer;
  list-style: none;
  color: var(--hb-text);
}

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

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

.page-faq .faq-item__mark {
  flex: 0 0 3px;
  border-radius: 3px;
  background: var(--hb-brass-soft);
  transition: background-color 180ms var(--hb-ease);
}

.page-faq .faq-item__text {
  flex: 1 1 auto;
  padding: 18px 0;
  font-size: 16.5px;
  font-weight: 500;
  line-height: 1.6;
}

.page-faq .faq-item__sign {
  position: relative;
  flex: 0 0 13px;
  width: 13px;
  height: 13px;
  align-self: center;
}

.page-faq .faq-item__sign::before,
.page-faq .faq-item__sign::after {
  content: "";
  position: absolute;
  background: var(--hb-mist);
  border-radius: 2px;
  transition: transform 180ms var(--hb-ease), background-color 180ms var(--hb-ease);
}

.page-faq .faq-item__sign::before {
  left: 0;
  right: 0;
  top: 5.5px;
  height: 2px;
}

.page-faq .faq-item__sign::after {
  top: 0;
  bottom: 0;
  left: 5.5px;
  width: 2px;
}

.page-faq .faq-item[open] .faq-item__mark {
  background: var(--hb-brass);
}

.page-faq .faq-item[open] .faq-item__text {
  color: var(--hb-deep);
}

.page-faq .faq-item[open] .faq-item__sign::before {
  background: var(--hb-brass);
}

.page-faq .faq-item[open] .faq-item__sign::after {
  transform: scaleY(0);
}

.page-faq .faq-item__a {
  padding: 0 0 20px 16px;
  max-width: 68ch;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--hb-stone);
  animation: faq-open 220ms var(--hb-ease) both;
}

@keyframes faq-open {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: none; }
}

/* ---------- 费用构成条 ---------- */
.page-faq .faq-cost {
  margin: 22px 0 10px;
  padding: 18px 18px 16px;
  border: 1px solid var(--hb-line);
  border-radius: var(--hb-radius-md);
  background: var(--hb-cream);
}

.page-faq .faq-cost__title {
  margin: 0 0 14px;
  font-size: 11.5px;
  letter-spacing: 0.14em;
  color: var(--hb-mist);
}

.page-faq .faq-cost__bar {
  display: flex;
  gap: 3px;
  border-radius: var(--hb-radius-sm);
  overflow: hidden;
}

.page-faq .faq-cost__seg {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 8px 6px;
  font-size: 12.5px;
  line-height: 1.3;
  text-align: center;
  color: var(--hb-white);
}

.page-faq .faq-cost__seg--base {
  flex: 5 1 0;
  background: var(--hb-deep);
}

.page-faq .faq-cost__seg--window {
  flex: 3 1 0;
  background: var(--hb-mist);
}

.page-faq .faq-cost__seg--rush {
  flex: 2 1 0;
  background: var(--hb-coral);
}

.page-faq .faq-cost__note {
  margin: 13px 0 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--hb-stone);
}

/* ---------- 响应时间刻度 ---------- */
.page-faq .faq-chart {
  margin: 20px 0 8px;
  padding: 18px 18px 16px;
  border: 1px solid var(--hb-line);
  border-radius: var(--hb-radius-md);
  background: var(--hb-white);
}

.page-faq .faq-chart__bar {
  display: flex;
  gap: 3px;
}

.page-faq .faq-chart__seg {
  display: block;
  min-height: 40px;
  border-radius: var(--hb-radius-sm);
  font-family: var(--hb-font-mono);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--hb-white);
  padding: 11px 10px;
}

.page-faq .faq-chart__seg--a {
  flex: 2 1 0;
  background: var(--hb-mint);
}

.page-faq .faq-chart__seg--b {
  flex: 2 1 0;
  background: var(--hb-brass);
}

.page-faq .faq-chart__seg--c {
  flex: 6 1 0;
  background: var(--hb-mist);
}

.page-faq .faq-chart__legend {
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  font-size: 14px;
  color: var(--hb-text);
}

.page-faq .faq-chart__legend li {
  display: flex;
  align-items: center;
  gap: 9px;
}

.page-faq .faq-dot {
  flex: 0 0 10px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.page-faq .faq-dot--a { background: var(--hb-mint); }
.page-faq .faq-dot--b { background: var(--hb-brass); }
.page-faq .faq-dot--c { background: var(--hb-mist); }

.page-faq .faq-chart__note {
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px dashed var(--hb-line);
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--hb-stone);
}

/* ---------- 章节配图 ---------- */
.page-faq .faq-figure {
  margin: 20px 0 4px;
}

.page-faq .faq-figure .hb-media {
  border-radius: var(--hb-radius-lg);
  overflow: hidden;
}

/* ---------- 收尾 ---------- */
.page-faq .faq-outro {
  margin-top: clamp(20px, 3vw, 32px);
  padding: clamp(22px, 3.4vw, 34px);
  border-radius: var(--hb-radius-lg);
  background: var(--hb-ink);
  color: var(--hb-cream);
}

.page-faq .faq-outro__title {
  margin: 0;
  font-size: clamp(20px, 2.6vw, 26px);
  line-height: 1.3;
  color: var(--hb-white);
}

.page-faq .faq-outro__text {
  margin: 14px 0 0;
  max-width: 58ch;
  font-size: 15.5px;
  line-height: 1.8;
  color: rgba(245, 241, 232, 0.78);
}

.page-faq .faq-outro__actions {
  margin-top: 22px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 平板与桌面 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-chart__legend {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 960px) {
  .page-faq .faq-layout {
    grid-template-columns: 236px minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-toc {
    position: sticky;
    top: var(--faq-sticky-top);
    padding: 18px 16px 16px;
  }

  .page-faq .faq-toc__list {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 2px;
  }

  .page-faq .faq-item__text {
    font-size: 17px;
  }

  .page-faq .faq-item__a {
    font-size: 16px;
    padding-left: 16px;
  }
}

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

  .page-faq .faq-toc__link,
  .page-faq .faq-item__mark,
  .page-faq .faq-item__sign::before,
  .page-faq .faq-item__sign::after {
    transition: none;
  }
}