.page-faq {
  --faq-panel: rgba(246, 240, 231, 0.035);
  --faq-ink-soft: rgba(246, 240, 231, 0.82);
  padding-bottom: 24px;
}

.page-faq [id] {
  scroll-margin-top: calc(var(--topbar-h) + 24px);
}

/* ---------- 面包屑与首屏 ---------- */
.page-faq .crumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: var(--fs-14);
  color: var(--gray-gold);
  padding: 18px 0 6px;
}

.page-faq .crumbs a {
  color: var(--gray-gold);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.page-faq .crumbs a:hover {
  color: var(--neon);
  border-bottom-color: var(--neon);
}

.page-faq .crumbs__sep {
  color: var(--copper);
}

.page-faq .faq-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
  padding: 10px 0 42px;
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-hero__title {
  margin: 10px 0 0;
  max-width: 20ch;
}

.page-faq .faq-hero__lead {
  margin: 18px 0 0;
  max-width: 44ch;
  font-size: var(--fs-16);
  line-height: 1.9;
  color: var(--faq-ink-soft);
}

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

.page-faq .faq-hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 26px;
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
}

.page-faq .faq-hero__stats li {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-faq .faq-hero__stats .metric-box {
  padding: 2px 12px;
}

.page-faq .faq-hero__stats .metric {
  font-size: var(--fs-30);
}

.page-faq .faq-hero__stats .metric-label {
  font-size: var(--fs-14);
  color: var(--gray-gold);
}

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

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

/* ---------- 词典外壳 ---------- */
.page-faq .faq-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 30px;
}

.page-faq .faq-rail {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px 18px 20px;
}

.page-faq .faq-rail__fig {
  margin: 0 0 16px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  overflow: hidden;
  background: rgba(26, 10, 16, 0.55);
}

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

.page-faq .faq-rail__title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: var(--fs-14);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gold);
}

.page-faq .faq-index {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .faq-index li + li {
  border-top: 1px solid rgba(110, 74, 33, 0.28);
}

.page-faq .faq-index a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 10px 0 10px 12px;
  border-left: 2px solid transparent;
  text-decoration: none;
  color: var(--gray-gold);
  font-size: var(--fs-14);
  transition: color 0.2s ease, border-color 0.2s ease;
}

.page-faq .faq-index a:hover,
.page-faq .faq-index a:focus-visible {
  color: var(--gold-hi);
  border-left-color: var(--neon);
}

.page-faq .faq-index .rail-num {
  color: var(--copper);
  font-size: var(--fs-14);
}

.page-faq .faq-index a:hover .rail-num {
  color: var(--neon);
}

.page-faq .faq-rail__search {
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid var(--line-soft);
}

.page-faq .faq-rail__search label {
  display: block;
  margin-bottom: 8px;
  font-size: var(--fs-14);
  color: var(--gray-gold);
}

.page-faq .faq-rail__search input {
  width: 100%;
  box-sizing: border-box;
  padding: 10px 12px;
  background: rgba(26, 10, 16, 0.62);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--glass-white);
  font-family: var(--font-body);
  font-size: var(--fs-14);
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.page-faq .faq-rail__search input::placeholder {
  color: rgba(156, 138, 102, 0.75);
}

.page-faq .faq-rail__search input:focus {
  border-color: var(--gold-hi);
  box-shadow: 0 0 0 2px var(--neon-mist);
}

.page-faq .faq-rail__hint {
  margin: 10px 0 0;
  font-size: var(--fs-14);
  line-height: 1.7;
  color: var(--gray-gold);
}

/* ---------- 术语分组 ---------- */
.page-faq .faq-group {
  margin-bottom: 42px;
}

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

.page-faq .faq-group__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 12px;
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-group__head .sec-title {
  flex: 1 1 auto;
  margin: 0;
}

.page-faq .faq-group__head .sec-kicker {
  flex: 0 0 auto;
  margin: 0;
}

.page-faq .faq-group__head .rail-num {
  color: var(--gold);
}

.page-faq .term {
  position: relative;
  padding: 2px 0 2px 18px;
  margin-bottom: 8px;
}

.page-faq .term::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: rgba(56, 225, 212, 0.34);
  transform: scaleY(0.32);
  transform-origin: top center;
  transition: transform 0.3s ease, background 0.3s ease;
}

.page-faq .term[data-open]::before {
  transform: scaleY(1);
  background: var(--neon);
}

.page-faq .term__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 12px;
  width: 100%;
  padding: 10px 0;
  background: none;
  border: 0;
  text-align: left;
  cursor: pointer;
  color: var(--glass-white);
  font-family: inherit;
}

.page-faq .term__name {
  font-family: var(--font-mono);
  font-size: var(--fs-16);
  letter-spacing: 0.01em;
  color: var(--gold-hi);
}

.page-faq .term__brief {
  flex: 1 1 auto;
  font-size: var(--fs-14);
  color: var(--gray-gold);
}

.page-faq .term__sign {
  font-family: var(--font-mono);
  font-size: var(--fs-18);
  line-height: 1;
  color: var(--neon);
}

.page-faq .term__body {
  padding-bottom: 12px;
}

.page-faq .term:not([data-open]) .term__body {
  display: none;
}

.page-faq .term__body p {
  margin: 0 0 8px;
  max-width: 42ch;
  font-size: var(--fs-16);
  line-height: 1.85;
  color: var(--glass-white);
}

.page-faq .term__scene {
  font-size: var(--fs-14);
  color: var(--gray-gold);
}

.page-faq .term__copy {
  margin-top: 4px;
  font-size: var(--fs-14);
}

/* ---------- 记录字段刻度 ---------- */
.page-faq .faq-sechead {
  margin-bottom: 26px;
}

.page-faq .faq-sechead__note {
  margin: 12px 0 0;
  max-width: 46ch;
  font-size: var(--fs-16);
  line-height: 1.85;
  color: var(--faq-ink-soft);
}

.page-faq .gauge-list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .gauge {
  padding: 16px 18px 18px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: var(--faq-panel);
}

.page-faq .gauge__top {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
}

.page-faq .gauge__name {
  margin: 0;
  font-family: var(--font-display);
  font-size: var(--fs-18);
  color: var(--gold);
}

.page-faq .gauge__tag {
  font-family: var(--font-mono);
  font-size: var(--fs-14);
  color: var(--gray-gold);
}

.page-faq .gauge__ticks {
  position: relative;
  height: 10px;
  margin: 14px 0 12px;
  border-bottom: 1px solid var(--line);
  background-image: repeating-linear-gradient(90deg, var(--copper) 0 1px, transparent 1px 12px);
}

.page-faq .gauge__ticks::after {
  content: "";
  position: absolute;
  right: 16%;
  bottom: -4px;
  width: 8px;
  height: 8px;
  background: var(--neon);
  box-shadow: 0 0 10px var(--neon-mist);
}

.page-faq .gauge__desc {
  margin: 0;
  max-width: 44ch;
  font-size: var(--fs-16);
  line-height: 1.85;
  color: var(--faq-ink-soft);
}

/* ---------- 问答区 ---------- */
.page-faq .qa-block {
  margin-bottom: 38px;
}

.page-faq .qa-block:last-child {
  margin-bottom: 0;
}

.page-faq .qa-block__title {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: var(--fs-22);
  letter-spacing: -0.01em;
  color: var(--gold);
}

.page-faq .qa-block__title .rail-num {
  color: var(--copper);
}

.page-faq .qa {
  padding: 16px 0;
  border-top: 1px solid var(--line-soft);
}

.page-faq .qa__q {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: var(--fs-18);
  line-height: 1.6;
  color: var(--glass-white);
}

.page-faq .qa__a {
  margin: 0;
  max-width: 40ch;
  font-size: var(--fs-16);
  line-height: 1.9;
  color: var(--faq-ink-soft);
}

/* ---------- 结尾指引 ---------- */
.page-faq .faq-cta {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 20px;
  padding: 26px 22px 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(140deg, rgba(192, 39, 45, 0.3), rgba(26, 10, 16, 0.3) 62%);
}

.page-faq .faq-cta__title {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-size: var(--fs-22);
  letter-spacing: -0.02em;
  color: var(--gold-hi);
}

.page-faq .faq-cta__lead {
  margin: 0 0 10px;
  max-width: 46ch;
  font-size: var(--fs-16);
  line-height: 1.9;
  color: var(--faq-ink-soft);
}

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

.page-faq .faq-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

/* ---------- 平板 ---------- */
@media (min-width: 760px) {
  .page-faq .faq-hero {
    padding: 16px 0 52px;
  }

  .page-faq .faq-hero__title {
    font-size: var(--fs-44);
  }

  .page-faq .gauge-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .gauge--wide {
    grid-column: 1 / -1;
  }

  .page-faq .faq-cta {
    padding: 32px 34px;
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 1040px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    gap: 48px;
    align-items: center;
  }

  .page-faq .faq-shell {
    grid-template-columns: 262px minmax(0, 1fr);
    gap: 48px;
    align-items: start;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: calc(var(--topbar-h) + 20px);
  }

  .page-faq .faq-main {
    padding-top: 4px;
  }

  .page-faq .qa__a,
  .page-faq .term__body p {
    max-width: 46ch;
  }
}