.page-faq {
  overflow-x: hidden;
  background: var(--ly-abyss);
  color: var(--ly-ink);
}

/* ---------- 面包屑与首屏 ---------- */

.page-faq .ly-breadcrumb {
  padding-top: clamp(20px, 3vw, 32px);
}

.page-faq .faq-hero {
  position: relative;
  padding: clamp(36px, 6vw, 72px) 0 clamp(40px, 6vw, 72px);
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 5vw, 60px);
  align-items: end;
}

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

.page-faq .faq-hero__title {
  margin: 18px 0 20px;
  font-family: var(--ly-font-display);
  font-weight: 900;
  font-size: clamp(38px, 8.6vw, 88px);
  line-height: 0.98;
  letter-spacing: -0.02em;
  color: var(--ly-ink);
}

.page-faq .faq-hero__lede {
  margin: 0 0 18px;
  font-size: 16.5px;
  line-height: 1.85;
  color: var(--ly-mist);
}

.page-faq .faq-hero__hint {
  margin: 0;
  font-size: 12.5px;
  letter-spacing: 0.12em;
  color: var(--ly-mist);
}

.page-faq .faq-hero__figure {
  margin: 0;
  border: 1px solid var(--ly-grid);
}

/* ---------- 横向数据带 ---------- */

.page-faq .faq-band {
  border-top: 1px solid var(--ly-grid);
  border-bottom: 1px solid var(--ly-grid);
  background: linear-gradient(90deg, rgba(14, 58, 44, 0.34), rgba(5, 18, 30, 0) 42%);
}

.page-faq .faq-band__item {
  min-width: 168px;
  padding: 20px 26px 20px 0;
  border-right: 1px solid var(--ly-grid);
}

.page-faq .faq-band__item:last-child {
  border-right: 0;
}

.page-faq .faq-band__num {
  display: block;
  font-family: var(--ly-font-mono);
  font-weight: 700;
  font-size: clamp(24px, 3.6vw, 36px);
  line-height: 1;
  color: var(--ly-ink);
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-band__cap {
  display: block;
  margin-top: 8px;
  font-size: 11.5px;
  letter-spacing: 0.16em;
  color: var(--ly-mist);
}

/* ---------- 筛选 ---------- */

.page-faq .faq-filters {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 20px;
  padding: clamp(28px, 4vw, 44px) 0 4px;
}

.page-faq .faq-filters__count {
  margin: 0 0 0 auto;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--ly-mist);
}

/* ---------- 章节 ---------- */

.page-faq .faq-chapter {
  position: relative;
  margin-top: clamp(56px, 8vw, 104px);
  padding-top: clamp(22px, 3.4vw, 40px);
  border-top: 1px solid var(--ly-grid);
}

.page-faq .faq-chapter::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: 72px;
  height: 2px;
  background: var(--ly-cyan);
}

.page-faq .faq-chapter__head {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
  margin-bottom: clamp(20px, 3vw, 32px);
}

.page-faq .faq-chapter__title {
  margin: 0;
  font-family: var(--ly-font-display);
  font-weight: 800;
  font-size: clamp(24px, 4vw, 38px);
  line-height: 1.08;
  letter-spacing: -0.015em;
  color: var(--ly-ink);
}

.page-faq .faq-chapter__note {
  margin: 0;
  max-width: 38em;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--ly-mist);
}

.page-faq .faq-figure {
  margin: 0 0 clamp(20px, 3vw, 32px);
  border: 1px solid var(--ly-grid);
}

/* ---------- 问答条目 ---------- */

.page-faq .faq-list {
  border-top: 1px solid var(--ly-grid-soft);
}

.page-faq .faq-q {
  border-bottom: 1px solid var(--ly-grid-soft);
  background: transparent;
  transition: box-shadow 220ms var(--ly-ease), background-color 220ms var(--ly-ease);
}

.page-faq .faq-q > .faq-q__summary {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr) 20px;
  gap: 0 14px;
  align-items: start;
  padding: 20px 0;
  cursor: pointer;
  list-style: none;
}

.page-faq .faq-q > .faq-q__summary::-webkit-details-marker {
  display: none;
}

.page-faq .faq-q > .faq-q__summary::marker {
  content: "";
}

.page-faq .faq-q > .faq-q__summary::after {
  content: "+";
  grid-column: 3;
  grid-row: 1;
  font-family: var(--ly-font-mono);
  font-size: 18px;
  line-height: 1.3;
  color: var(--ly-mist);
  text-align: right;
  transition: color 200ms var(--ly-ease);
}

.page-faq .faq-q[open] > .faq-q__summary::after {
  content: "–";
  color: var(--ly-cyan);
}

.page-faq .faq-q__no {
  grid-column: 1;
  grid-row: 1;
  padding-top: 4px;
  font-family: var(--ly-font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  text-align: right;
  color: var(--ly-mist);
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-q__main {
  grid-column: 2;
  grid-row: 1;
  min-width: 0;
}

.page-faq .faq-q__ask {
  display: block;
  font-family: var(--ly-font-display);
  font-weight: 700;
  font-size: clamp(16.5px, 2.1vw, 21px);
  line-height: 1.34;
  letter-spacing: -0.01em;
  color: var(--ly-ink);
}

.page-faq .faq-q__lede {
  display: block;
  margin-top: 8px;
  max-width: 42em;
  font-size: 14px;
  line-height: 1.72;
  color: var(--ly-mist);
}

.page-faq .faq-q[open] {
  box-shadow: inset 2px 0 0 var(--ly-cyan);
  background: linear-gradient(90deg, rgba(22, 224, 200, 0.045), rgba(5, 18, 30, 0) 58%);
}

.page-faq .faq-q[open] > .faq-q__summary {
  padding-left: 16px;
}

.page-faq .faq-q[open] .faq-q__lede {
  color: var(--ly-electric);
}

.page-faq .faq-q__body {
  padding: 0 0 24px 54px;
}

.page-faq .faq-q[open] .faq-q__body {
  padding-left: 70px;
}

.page-faq .faq-q__body p {
  margin: 0 0 12px;
  max-width: 36em;
  font-size: 15px;
  line-height: 1.85;
  color: var(--ly-mist);
}

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

.page-faq .faq-q__source {
  margin-top: 16px !important;
  padding-top: 10px;
  border-top: 1px dashed var(--ly-grid);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  color: var(--ly-mist);
}

.page-faq .faq-q__source b {
  margin-right: 10px;
  font-weight: 600;
  color: var(--ly-electric);
}

/* ---------- 相关入口 ---------- */

.page-faq .faq-paths {
  margin-top: clamp(64px, 9vw, 120px);
  padding: clamp(44px, 6vw, 80px) 0 clamp(56px, 8vw, 96px);
  border-top: 1px solid var(--ly-grid);
  background: linear-gradient(180deg, rgba(14, 58, 44, 0.28), rgba(5, 18, 30, 0) 62%);
}

.page-faq .faq-paths__title {
  margin: 16px 0 clamp(24px, 4vw, 40px);
  font-family: var(--ly-font-display);
  font-weight: 800;
  font-size: clamp(22px, 3.4vw, 32px);
  line-height: 1.12;
  letter-spacing: -0.015em;
  color: var(--ly-ink);
}

.page-faq .faq-paths__list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
  border-top: 1px solid var(--ly-grid);
}

.page-faq .faq-path {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-height: 44px;
  padding: 18px 0;
  border-bottom: 1px solid var(--ly-grid);
  text-decoration: none;
  transition: border-color 200ms var(--ly-ease), padding-left 200ms var(--ly-ease);
}

.page-faq .faq-path:hover,
.page-faq .faq-path:focus-visible {
  border-bottom-color: var(--ly-cyan);
  padding-left: 10px;
}

.page-faq .faq-path__name {
  font-family: var(--ly-font-display);
  font-weight: 700;
  font-size: 17px;
  letter-spacing: -0.005em;
  color: var(--ly-ink);
}

.page-faq .faq-path__desc {
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--ly-mist);
}

/* ---------- 响应式 ---------- */

@media (min-width: 760px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.72fr);
  }

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

  .page-faq .faq-q__body {
    padding-left: 70px;
  }

  .page-faq .faq-paths__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 40px;
  }
}

@media (min-width: 1040px) {
  .page-faq .faq-chapter {
    display: grid;
    grid-template-columns: 200px minmax(0, 1fr);
    column-gap: clamp(28px, 4vw, 56px);
    align-items: start;
  }

  .page-faq .faq-chapter::after {
    content: "";
    position: absolute;
    top: -1px;
    left: 100%;
    width: 96px;
    height: 1px;
    background: var(--ly-grid);
  }

  .page-faq .faq-chapter__head {
    grid-column: 1;
    grid-row: 1;
    position: sticky;
    top: 96px;
    margin-bottom: 0;
    gap: 12px;
  }

  .page-faq .faq-chapter__title {
    font-size: clamp(24px, 2.1vw, 34px);
  }

  .page-faq .faq-figure,
  .page-faq .faq-list {
    grid-column: 2;
    grid-row: 1 / span 2;
  }

  .page-faq .faq-figure + .faq-list {
    grid-row: 2;
    margin-top: clamp(20px, 3vw, 32px);
  }
}

@media (min-width: 1320px) {
  .page-faq .faq-chapter {
    grid-template-columns: 240px minmax(0, 1fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-q,
  .page-faq .faq-path,
  .page-faq .faq-btn {
    transition: none;
  }
}