.page-faq {
  background: var(--ink-900);
  color: var(--text-on-dark);
}

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

/* ---------- 首屏 ---------- */
.page-faq .faq-head {
  position: relative;
  overflow: hidden;
  padding: clamp(14px, 2.4vw, 24px) 0 clamp(32px, 5vw, 56px);
}

.page-faq .faq-head::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(53, 224, 214, 0.06) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(53, 224, 214, 0.06) 1px, transparent 1px);
  background-size: 120px 120px;
  pointer-events: none;
}

.page-faq .faq-head .container {
  position: relative;
  z-index: 1;
}

.page-faq .faq-head__grid {
  display: grid;
  gap: 26px;
  margin-top: clamp(26px, 4vw, 46px);
}

.page-faq .faq-h1 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(34px, 5.4vw, 66px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--white);
}

.page-faq .faq-head__aside {
  border-top: 2px solid var(--amber-400);
  padding-top: 16px;
}

.page-faq .faq-stats {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .faq-stats li {
  border-top: 1px solid var(--ink-500);
  padding-top: 10px;
}

.page-faq .faq-stats__n {
  display: block;
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 600;
  line-height: 1.1;
  color: var(--cyan-400);
  letter-spacing: 0.02em;
}

.page-faq .faq-stats__l {
  display: block;
  margin-top: 6px;
  font-size: 12px;
  line-height: 1.55;
  color: var(--mist-300);
}

@media (min-width: 900px) {
  .page-faq .faq-head__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 48px;
    align-items: end;
  }

  .page-faq .faq-head__aside {
    border-top: 0;
    border-left: 2px solid var(--amber-400);
    padding-top: 0;
    padding-left: 20px;
  }

  .page-faq .faq-stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
  }
}

/* ---------- 主体：索引 + 答案 ---------- */
.page-faq .faq-shell {
  display: grid;
  gap: 30px;
  padding-top: clamp(28px, 4vw, 48px);
  padding-bottom: clamp(48px, 7vw, 96px);
}

.page-faq .faq-index {
  border-top: 2px solid var(--amber-400);
  padding-top: 14px;
}

.page-faq .faq-index__cap {
  margin: 0 0 10px;
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--mist-300);
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-faq .faq-index__list a {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  padding: 8px 10px;
  border-left: 2px solid transparent;
  color: var(--text-on-dark);
  text-decoration: none;
  font-size: 14px;
  line-height: 1.4;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-faq .faq-index__list a .mono {
  flex: none;
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--amber-400);
}

.page-faq .faq-index__list a:hover,
.page-faq .faq-index__list a:focus-visible {
  border-left-color: var(--amber-400);
  color: var(--cyan-400);
}

.page-faq .faq-index__note {
  margin: 18px 0 12px;
  font-size: 12px;
  line-height: 1.65;
  color: var(--mist-300);
}

.page-faq .faq-index__btn {
  width: 100%;
  justify-content: center;
}

@media (min-width: 980px) {
  .page-faq .faq-shell {
    grid-template-columns: 244px minmax(0, 1fr);
    gap: 56px;
    align-items: start;
  }

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

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  margin-bottom: clamp(34px, 5vw, 54px);
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 4px 12px;
  align-items: baseline;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--ink-500);
}

.page-faq .faq-group__no {
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--amber-400);
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(19px, 2.4vw, 24px);
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-faq .faq-group__note {
  grid-column: 2;
  margin: 6px 0 0;
  font-size: 13px;
  line-height: 1.65;
  color: var(--mist-300);
}

/* ---------- 答案卡 ---------- */
.page-faq .qa {
  background: var(--ink-700);
  border: 1px solid var(--ink-500);
  border-radius: 14px 4px 14px 4px;
  transition: border-color var(--dur) var(--ease);
}

.page-faq .qa + .qa {
  margin-top: 10px;
}

.page-faq .qa[open] {
  border-color: var(--ink-500);
}

.page-faq .qa__summary {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  min-height: 44px;
  padding: 14px 16px;
  cursor: pointer;
  list-style: none;
}

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

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

.page-faq .qa__summary::after {
  content: "+";
  margin-left: auto;
  flex: none;
  font-family: var(--font-mono);
  font-size: 17px;
  line-height: 20px;
  color: var(--cyan-400);
  transition: color var(--dur) var(--ease);
}

.page-faq .qa[open] .qa__summary::after {
  content: "−";
  color: var(--amber-400);
}

.page-faq .qa__summary:focus-visible {
  outline: 2px solid var(--amber-400);
  outline-offset: -2px;
  border-radius: 14px 4px 14px 4px;
}

.page-faq .qa__no {
  flex: none;
  min-width: 32px;
  height: 22px;
  font-size: 11px;
  line-height: 22px;
  text-align: center;
  border-radius: 2px;
  background: var(--ink-500);
  color: var(--cyan-200);
  letter-spacing: 0.06em;
}

.page-faq .qa__q {
  padding-top: 1px;
  font-size: 15px;
  font-weight: 500;
  line-height: 1.55;
  color: var(--text-on-dark);
}

.page-faq .qa__summary:hover .qa__q {
  color: var(--white);
}

.page-faq .qa__body {
  margin-left: 16px;
  padding: 0 16px 16px 16px;
  border-left: 2px solid var(--amber-400);
  font-size: 14px;
  line-height: 1.7;
}

.page-faq .qa__body p {
  margin: 0 0 10px;
  color: var(--muted-on-dark);
}

.page-faq .qa__lead {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px;
  margin: 0 0 12px;
  font-size: 14px;
  font-weight: 500;
  line-height: 1.7;
  color: var(--white);
}

.page-faq .qa__lead::before {
  content: "结论";
  flex: none;
  padding: 2px 6px;
  border-radius: 2px;
  background: var(--amber-400);
  color: var(--ink-900);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.12em;
  line-height: 1.6;
}

.page-faq .qa__steps {
  counter-reset: qa-step;
  list-style: none;
  margin: 0 0 12px;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-faq .qa__steps li {
  counter-increment: qa-step;
  display: grid;
  grid-template-columns: 26px minmax(0, 1fr);
  gap: 10px;
  align-items: start;
  color: var(--muted-on-dark);
}

.page-faq .qa__steps li::before {
  content: counter(qa-step, decimal-leading-zero);
  height: 24px;
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 24px;
  text-align: center;
  border-radius: 2px;
  background: var(--ink-500);
  color: var(--cyan-200);
}

.page-faq .qa__link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 44px;
  font-size: 13px;
  color: var(--cyan-400);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 224, 214, 0.4);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .qa__link::after {
  content: "→";
}

.page-faq .qa__link:hover {
  color: var(--cyan-200);
  border-bottom-color: var(--cyan-200);
}

/* ---------- 批次速查带 ---------- */
.page-faq .faq-quickref {
  margin: 0 0 clamp(34px, 5vw, 54px);
  padding: clamp(20px, 3.4vw, 34px);
  background: var(--paper-100);
  color: var(--text-on-paper);
  border-radius: 14px 4px 14px 4px;
}

.page-faq .faq-quickref .eyebrow {
  color: var(--muted-on-paper);
}

.page-faq .faq-quickref .serif-title {
  margin: 10px 0 0;
  color: var(--text-on-paper);
  font-size: clamp(20px, 3vw, 28px);
  line-height: 1.4;
}

.page-faq .faq-quickref__text {
  margin: 12px 0 0;
  max-width: 48ch;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted-on-paper);
}

.page-faq .faq-quickref__grid {
  display: grid;
  gap: 20px;
  margin-top: 18px;
}

.page-faq .faq-quickref .media-frame {
  border-color: var(--paper-300);
}

.page-faq .faq-quickref .media-frame__caption {
  padding: 8px 2px 0;
  color: var(--muted-on-paper);
}

.page-faq .faq-table-wrap {
  overflow-x: auto;
  padding-bottom: 4px;
}

.page-faq .faq-table {
  width: 100%;
  min-width: 440px;
  border-collapse: collapse;
  font-size: 12px;
  line-height: 1.6;
}

.page-faq .faq-table caption {
  padding-bottom: 8px;
  text-align: left;
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--muted-on-paper);
}

.page-faq .faq-table th,
.page-faq .faq-table td {
  padding: 9px 10px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px dashed var(--paper-300);
}

.page-faq .faq-table th {
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--text-on-paper);
  border-bottom: 1px solid var(--text-on-paper);
}

.page-faq .faq-table td {
  color: var(--muted-on-paper);
}

.page-faq .faq-table td:first-child {
  font-weight: 600;
  color: var(--text-on-paper);
  white-space: nowrap;
}

.page-faq .faq-table tr.is-current td {
  background: rgba(242, 166, 59, 0.18);
  color: var(--text-on-paper);
}

@media (min-width: 760px) {
  .page-faq .faq-quickref__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 28px;
    align-items: start;
  }
}

/* ---------- 转人工 ---------- */
.page-faq .faq-human {
  border-top: 1px solid var(--ink-500);
  padding-top: clamp(26px, 4vw, 40px);
}

.page-faq .faq-human__grid {
  display: grid;
  gap: 24px;
}

.page-faq .faq-human__col > p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted-on-dark);
}

.page-faq .faq-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .faq-list li {
  display: grid;
  grid-template-columns: 18px minmax(0, 1fr);
  gap: 10px;
  font-size: 14px;
  line-height: 1.65;
  color: var(--muted-on-dark);
}

.page-faq .faq-list li::before {
  content: "";
  width: 8px;
  height: 8px;
  margin-top: 8px;
  border: 1px solid var(--cyan-400);
  border-radius: 1px;
}

.page-faq .faq-human__contact {
  margin-top: 20px;
  padding-left: 14px;
  border-left: 2px solid var(--amber-400);
  display: grid;
  gap: 10px;
}

.page-faq .faq-human__contact span {
  display: block;
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--mist-300);
}

.page-faq .faq-human__contact strong {
  display: block;
  margin-top: 3px;
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 500;
  line-height: 1.6;
  color: var(--white);
  word-break: break-word;
}

.page-faq .faq-human .media-frame {
  margin: 0;
}

@media (min-width: 820px) {
  .page-faq .faq-human__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
    gap: 32px;
    align-items: start;
  }
}
</detail>