.page-faq .faq-hero {
  padding-block: clamp(26px, 5vw, 56px) clamp(34px, 6vw, 72px);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(22px, 4vw, 40px);
  margin-top: clamp(20px, 4vw, 40px);
}

.page-faq .faq-hero__title {
  margin: 14px 0 18px;
  font-size: clamp(28px, 5.6vw, 54px);
  line-height: 1.14;
  letter-spacing: -0.01em;
}

.page-faq .faq-hero__lead .lede {
  max-width: 58ch;
  margin: 0;
}

.page-faq .faq-stats {
  display: grid;
}

.page-faq .faq-stat {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 12px 0;
  border-bottom: var(--hair);
}

.page-faq .faq-stat:first-child {
  border-top: var(--hair);
}

.page-faq .faq-stat__v {
  font-size: clamp(22px, 3.4vw, 30px);
  font-weight: 700;
  line-height: 1;
  color: var(--warm-gold);
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-stat__v--red {
  color: var(--draw-red);
}

.page-faq .faq-stat__l {
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--text-muted);
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: repeat(12, 1fr);
    align-items: end;
  }
  .page-faq .faq-hero__lead {
    grid-column: 1 / span 8;
  }
  .page-faq .faq-hero__stats {
    grid-column: 10 / span 3;
  }
}

/* ---------- 分组导览刻度条 ---------- */

.page-faq .faq-index {
  padding-block: clamp(30px, 5vw, 56px);
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: var(--hair);
  border-left: var(--hair);
}

.page-faq .faq-index__item {
  border-right: var(--hair);
  border-bottom: var(--hair);
}

.page-faq .faq-index__link {
  display: block;
  padding: 16px 14px 20px;
  text-decoration: none;
  color: var(--text-primary);
}

.page-faq .faq-index__link::before {
  content: "";
  display: block;
  width: 1px;
  height: 12px;
  margin-bottom: 14px;
  background: var(--grid);
  transition: height 0.24s var(--ease), background-color 0.24s var(--ease);
}

.page-faq .faq-index__link:hover::before,
.page-faq .faq-index__link:focus-visible::before {
  height: 24px;
  background: var(--warm-gold);
}

.page-faq .faq-index__link:focus-visible {
  outline: 1px solid var(--warm-gold);
  outline-offset: -2px;
}

.page-faq .faq-index__no {
  display: block;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  color: var(--draw-red);
}

.page-faq .faq-index__name {
  display: block;
  margin-top: 8px;
  font-family: var(--font-sans);
  font-size: 17px;
  font-weight: 700;
  line-height: 1.3;
}

.page-faq .faq-index__desc {
  display: block;
  margin-top: 4px;
  font-size: 12.5px;
  color: var(--text-muted);
}

@media (min-width: 760px) {
  .page-faq .faq-index__list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .page-faq .faq-index__link {
    padding: 20px 18px 26px;
  }
}

.page-faq .faq-map {
  margin: clamp(26px, 4vw, 44px) 0 0;
}

.page-faq .faq-map__frame {
  aspect-ratio: 5 / 3;
}

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

.page-faq .faq-map .plate {
  margin-top: 12px;
}

/* ---------- 问答主体 ---------- */

.page-faq .faq-body {
  padding-block: clamp(34px, 6vw, 72px);
}

.page-faq .chips.faq-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 10px;
  padding-bottom: clamp(24px, 4vw, 40px);
}

.page-faq .chip {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.05em;
  padding: 7px 12px;
  border: var(--hair);
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background-color 0.2s var(--ease);
}

.page-faq .chip:hover {
  color: var(--text-primary);
  border-color: var(--chart-cyan);
}

.page-faq .chip:focus-visible {
  outline: 1px solid var(--warm-gold);
  outline-offset: 2px;
}

.page-faq .chip[aria-pressed="true"] {
  background: var(--warm-gold);
  border-color: var(--warm-gold);
  color: var(--ink-900);
}

.page-faq .faq-group + .faq-group {
  margin-top: clamp(34px, 6vw, 68px);
}

.page-faq #group-b {
  margin-top: clamp(48px, 8vw, 92px);
}

.page-faq #group-c {
  margin-top: clamp(26px, 4vw, 42px);
}

.page-faq #group-d {
  margin-top: clamp(56px, 9vw, 108px);
}

.page-faq .faq-group__head {
  padding-bottom: clamp(14px, 2vw, 22px);
  border-bottom: 2px solid var(--grid);
}

.page-faq .faq-group__no {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--warm-gold);
}

.page-faq .faq-group__title {
  margin: 10px 0 8px;
  font-family: var(--font-sans);
  font-size: clamp(21px, 3.2vw, 30px);
  font-weight: 800;
  line-height: 1.22;
  color: var(--text-primary);
}

.page-faq .faq-group__note {
  margin: 0;
  max-width: 62ch;
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-muted);
}

.page-faq .faq-group__head--media {
  display: grid;
  gap: 22px;
}

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

.page-faq .faq-group__fig .image-frame {
  aspect-ratio: 3 / 2;
}

.page-faq .faq-group__fig .plate {
  margin-top: 10px;
}

@media (min-width: 860px) {
  .page-faq .faq-group__head--media {
    grid-template-columns: minmax(0, 1fr) 300px;
    align-items: start;
    gap: 44px;
  }
}

/* ---------- 折叠问答条 ---------- */

.page-faq .qa {
  border-top: var(--hair);
}

.page-faq .qa:last-child {
  border-bottom: var(--hair);
}

.page-faq .qa__q {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 18px 2px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-sans);
  font-size: 16px;
  font-weight: 600;
  line-height: 1.55;
  color: var(--text-primary);
  transition: color 0.2s var(--ease);
}

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

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

.page-faq .qa__q:hover,
.page-faq .qa__q:focus-visible {
  color: var(--warm-gold);
}

.page-faq .qa__q:focus-visible {
  outline: 1px solid var(--warm-gold);
  outline-offset: -2px;
}

.page-faq .qa__idx {
  flex: 0 0 30px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--text-muted);
}

.page-faq .qa__text {
  flex: 1 1 auto;
}

.page-faq .qa__sign {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 17px;
  line-height: 1;
  color: var(--text-muted);
  transition: color 0.2s var(--ease);
}

.page-faq .qa__sign::before {
  content: "+";
}

.page-faq .qa[open] .qa__sign {
  color: var(--warm-gold);
}

.page-faq .qa[open] .qa__sign::before {
  content: "−";
}

.page-faq .qa__a {
  padding: 0 2px 20px 42px;
  font-family: var(--font-serif);
  font-size: 16.5px;
  line-height: 1.78;
  color: var(--text-muted);
}

.page-faq .qa[open] .qa__a {
  border-top: var(--hair);
  padding-top: 16px;
}

.page-faq .qa__a p {
  margin: 0 0 10px;
}

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

.page-faq .qa__a .n {
  font-family: var(--font-mono);
  font-size: 1.04em;
  font-weight: 700;
  color: var(--text-primary);
  padding: 0 1px;
}

.page-faq .qa__a a {
  color: var(--chart-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(95, 184, 198, 0.42);
}

.page-faq .qa__a a:hover,
.page-faq .qa__a a:focus-visible {
  color: var(--warm-gold);
  border-bottom-color: var(--warm-gold);
}

.page-faq .qa__more {
  font-family: var(--font-sans);
  font-size: 13.5px;
}

@media (max-width: 560px) {
  .page-faq .qa__a {
    padding-left: 0;
  }
  .page-faq .qa__idx {
    flex-basis: 26px;
  }
}

@media (min-width: 1180px) {
  .page-faq .faq-body__inner {
    position: relative;
  }
  .page-faq .faq-body__inner::after {
    content: "";
    position: absolute;
    top: 60px;
    bottom: 60px;
    right: -24px;
    width: 1px;
    background-image: repeating-linear-gradient(
      to bottom,
      var(--grid) 0,
      var(--grid) 10px,
      transparent 10px,
      transparent 34px
    );
  }
}

/* ---------- 口径注释 ---------- */

.page-faq .faq-glossary {
  padding-block: clamp(36px, 6vw, 76px);
}

.page-faq .gloss {
  margin: clamp(24px, 4vw, 40px) 0 0;
  border-top: var(--hair);
}

.page-faq .gloss__row {
  display: grid;
  gap: 6px;
  padding: 16px 0;
  border-bottom: var(--hair);
}

.page-faq .gloss__term {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.08em;
  color: var(--warm-gold);
}

.page-faq .gloss__def {
  margin: 0;
  max-width: 62ch;
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-muted);
}

@media (min-width: 640px) {
  .page-faq .gloss__row {
    grid-template-columns: 158px minmax(0, 1fr);
    gap: 20px;
    align-items: baseline;
  }
}

@media (min-width: 1000px) {
  .page-faq .gloss {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 56px;
  }
}

/* ---------- 人工通道 ---------- */

.page-faq .faq-help {
  padding-block: clamp(36px, 6vw, 76px);
}

.page-faq .faq-help__grid {
  display: grid;
  gap: clamp(26px, 4vw, 44px);
}

.page-faq .faq-help__list {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  border-top: var(--hair);
}

.page-faq .faq-help__list li {
  padding: 12px 0 12px 18px;
  border-bottom: var(--hair);
  position: relative;
  font-size: 15px;
  line-height: 1.7;
  color: var(--text-muted);
}

.page-faq .faq-help__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 21px;
  width: 5px;
  height: 5px;
  background: var(--chart-cyan);
}

.page-faq .faq-help__list strong {
  color: var(--text-primary);
  font-weight: 700;
}

.page-faq .faq-help__note {
  margin: 18px 0 0;
  font-size: 13.5px;
  line-height: 1.7;
}

.page-faq .faq-help__panel {
  border: var(--hair);
  padding: clamp(18px, 3vw, 26px);
  display: grid;
  gap: 12px;
  align-content: start;
}

.page-faq .faq-help__panel .eyebrow {
  margin-bottom: 4px;
}

.page-faq .copy.btn {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  width: 100%;
  text-align: left;
  padding: 12px 14px;
}

.page-faq .copy__value {
  font-size: 13px;
  word-break: break-all;
}

.page-faq .copy__flag {
  display: none;
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--settled);
}

.page-faq .copy[data-copied] .copy__flag {
  display: inline;
}

.page-faq .faq-help__addr {
  margin: 4px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--text-muted);
}

.page-faq .faq-help__links {
  margin: 6px 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 20px;
}

.page-faq .faq-help__links a {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--chart-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(95, 184, 198, 0.42);
}

.page-faq .faq-help__links a:hover,
.page-faq .faq-help__links a:focus-visible {
  color: var(--warm-gold);
  border-bottom-color: var(--warm-gold);
}

@media (min-width: 900px) {
  .page-faq .faq-help__grid {
    grid-template-columns: repeat(12, minmax(0, 1fr));
  }
  .page-faq .faq-help__body {
    grid-column: 1 / span 7;
  }
  .page-faq .faq-help__panel {
    grid-column: 9 / span 4;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-index__link::before,
  .page-faq .qa__q,
  .page-faq .qa__sign,
  .page-faq .chip {
    transition: none;
  }
}
</main>