.page-faq {
  --faq-card: rgba(22, 20, 58, 0.62);
  --faq-indent: 18px;
  display: block;
}

.page-faq h1,
.page-faq h2,
.page-faq h3 {
  font-family: var(--font-title);
  letter-spacing: -0.01em;
}

/* ---------- 题头 ---------- */
.page-faq .page-head {
  padding-top: clamp(28px, 5vw, 52px);
}

.page-faq .crumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 22px;
  font-size: 13px;
  color: var(--text-dim);
}

.page-faq .crumb-item + .crumb-item::before {
  content: "/";
  margin-right: 8px;
  color: var(--rule-strong);
}

.page-faq .crumb-link {
  color: var(--cyan);
  text-decoration: none;
}

.page-faq .crumb-link:hover {
  text-decoration: underline;
}

.page-faq .eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--orange);
  text-transform: none;
  margin-bottom: 14px;
}

.page-faq .page-title {
  font-size: clamp(30px, 6vw, 52px);
  line-height: 1.14;
  margin: 0 0 18px;
  max-width: 16em;
}

.page-faq .page-lead {
  max-width: 40em;
  font-size: 16px;
  line-height: 1.82;
  color: var(--text-dim);
  margin: 0;
}

/* ---------- 首屏数字条 ---------- */
.page-faq .head-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px 20px;
  margin: 30px 0 0;
  padding-top: 22px;
  border-top: 1px dashed var(--rule);
}

.page-faq .head-stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-faq .head-stat__label {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--mist);
  font-weight: 600;
}

.page-faq .head-stat__num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(20px, 4vw, 26px);
  color: var(--paper);
  text-shadow: 0 0 18px rgba(124, 58, 237, 0.45);
  border-bottom: 2px solid var(--orange);
  padding-bottom: 6px;
  align-self: flex-start;
}

/* ---------- 记录查询 ---------- */
.page-faq .section-head {
  margin-bottom: 28px;
}

.page-faq .section-title {
  font-size: clamp(22px, 4vw, 32px);
  margin: 10px 0 10px;
}

.page-faq .section-note {
  max-width: 44em;
  color: var(--text-dim);
  line-height: 1.8;
  margin: 0;
  font-size: 15.5px;
}

.page-faq .lookup-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 30px;
  align-items: start;
}

.page-faq .step-path {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: step;
}

.page-faq .step-path__item {
  position: relative;
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  gap: 16px;
  padding-bottom: 26px;
}

.page-faq .step-path__item:last-child {
  padding-bottom: 0;
}

.page-faq .step-path__item:not(:last-child)::before {
  content: "";
  position: absolute;
  left: 22px;
  top: 50px;
  bottom: 6px;
  width: 2px;
  background: linear-gradient(180deg, var(--violet), var(--blue));
  opacity: 0.55;
}

.page-faq .step-path__num {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 700;
  color: var(--paper);
  background: linear-gradient(135deg, var(--violet), var(--blue));
  box-shadow: 0 0 0 6px rgba(124, 58, 237, 0.14);
}

.page-faq .step-path__title {
  font-size: 18px;
  margin: 8px 0 6px;
  color: var(--text);
}

.page-faq .step-path__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--text-dim);
}

.page-faq .lookup-figure {
  margin: 0;
}

.page-faq .media-frame {
  position: relative;
  margin: 0;
  border: 1px solid var(--rule);
  border-radius: 12px;
  overflow: hidden;
  background: var(--panel);
}

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

.page-faq .media-caption {
  display: block;
  padding: 10px 14px;
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--mist);
  border-top: 1px dashed var(--rule);
}

.page-faq .lookup-tabs {
  margin-top: 34px;
}

.page-faq .lookup-tabs__bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.page-faq .tab-panel {
  border: 1px solid var(--rule);
  border-left: 3px solid var(--cyan);
  border-radius: 12px;
  background: var(--faq-card);
  padding: 18px 20px;
  color: var(--text-dim);
  font-size: 15px;
  line-height: 1.82;
}

.page-faq .lookup-tabs .tab-panel {
  display: none;
}

.page-faq .lookup-tabs .tab-panel.is-active {
  display: block;
}

/* ---------- 横向主题带 ---------- */
.page-faq .band-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 24px;
}

.page-faq .band-note {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--sign);
  border: 1px solid rgba(255, 231, 194, 0.35);
  border-radius: 4px;
  padding: 3px 8px;
}

/* ---------- 问答索引 ---------- */
.page-faq .faq-index {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 8px;
  margin-bottom: 30px;
  scrollbar-width: none;
  border-bottom: 1px dashed var(--rule);
}

.page-faq .faq-index::-webkit-scrollbar {
  display: none;
}

.page-faq .toc-link {
  flex: 0 0 auto;
  white-space: nowrap;
  padding: 8px 14px;
  border-radius: 999px;
  border: 1px solid var(--rule);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--text-dim);
  text-decoration: none;
  transition: color 0.16s var(--ease), border-color 0.16s var(--ease), background 0.16s var(--ease);
}

.page-faq .toc-link:hover,
.page-faq .toc-link.is-active {
  color: var(--paper);
  border-color: rgba(124, 58, 237, 0.72);
  background: rgba(124, 58, 237, 0.22);
}

/* ---------- 问答分组 ---------- */
.page-faq .qa-block {
  margin-bottom: 46px;
  scroll-margin-top: 96px;
}

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

.page-faq .qa-block__head {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 10px 14px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--rule-strong);
  margin-bottom: 18px;
}

.page-faq .qa-block__num {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--cyan);
  border: 1px solid rgba(47, 230, 200, 0.45);
  border-radius: 6px;
  padding: 2px 8px;
}

.page-faq .qa-block__title {
  font-size: 20px;
  margin: 0;
  color: var(--text);
}

.page-faq .qa-block__meta {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--mist);
}

.page-faq .qa-media-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
  align-items: start;
}

/* ---------- 手风琴 ---------- */
.page-faq .faq {
  border: 1px solid var(--rule);
  border-radius: 12px;
  overflow: hidden;
  background: var(--faq-card);
}

.page-faq .faq-item {
  position: relative;
  border-bottom: 1px solid var(--rule);
  transition: background 0.18s var(--ease);
}

.page-faq .faq-item:last-child {
  border-bottom: none;
}

.page-faq .faq-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--cyan);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform 0.22s var(--ease);
}

.page-faq .faq-item.is-open {
  background: rgba(47, 230, 200, 0.05);
}

.page-faq .faq-item.is-open::before {
  transform: scaleY(1);
}

.page-faq .faq-q {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: start;
  gap: 12px;
  width: 100%;
  padding: 17px var(--faq-indent);
  background: none;
  border: 0;
  text-align: left;
  font: inherit;
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.62;
  color: var(--text);
  cursor: pointer;
  transition: color 0.16s var(--ease);
}

.page-faq .faq-q:hover {
  color: var(--paper);
}

.page-faq .faq-q:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -2px;
}

.page-faq .faq-num {
  margin-top: 4px;
  padding: 3px 6px;
  border-radius: 4px;
  background: rgba(168, 165, 201, 0.16);
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 700;
  line-height: 1;
  color: var(--mist);
}

.page-faq .faq-sign {
  position: relative;
  width: 14px;
  height: 14px;
  margin-top: 6px;
}

.page-faq .faq-sign::before,
.page-faq .faq-sign::after {
  content: "";
  position: absolute;
  background: var(--violet);
  transition: transform 0.22s var(--ease), background 0.22s var(--ease);
}

.page-faq .faq-sign::before {
  left: 0;
  top: 6px;
  width: 14px;
  height: 2px;
}

.page-faq .faq-sign::after {
  left: 6px;
  top: 0;
  width: 2px;
  height: 14px;
}

.page-faq .faq-item.is-open .faq-sign::before {
  background: var(--cyan);
}

.page-faq .faq-item.is-open .faq-sign::after {
  transform: scaleY(0);
}

.page-faq .faq-a {
  display: grid;
  grid-template-rows: 0fr;
  opacity: 0;
  padding: 0 var(--faq-indent);
  font-size: 15px;
  line-height: 1.84;
  color: var(--text-dim);
  transition: grid-template-rows 0.28s var(--ease), opacity 0.22s var(--ease);
}

.page-faq .faq-a__inner {
  overflow: hidden;
}

.page-faq .faq-a__inner > p {
  margin: 0;
}

.page-faq .faq-item.is-open .faq-a {
  grid-template-rows: 1fr;
  opacity: 1;
  padding-bottom: 18px;
}

/* ---------- 术语表 ---------- */
.page-faq .filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}

.page-faq .glossary {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--rule);
}

.page-faq .glossary-item {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 12px 0;
  border-bottom: 1px solid var(--rule);
  font-size: 14.5px;
}

.page-faq .glossary-item[hidden] {
  display: none;
}

.page-faq .glossary-term {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 13.5px;
  color: var(--sign);
}

.page-faq .glossary-dots {
  flex: 1 1 auto;
  min-width: 16px;
  border-bottom: 1px dotted var(--rule-strong);
  transform: translateY(-4px);
}

.page-faq .glossary-def {
  flex: 0 0 auto;
  max-width: 62%;
  color: var(--text-dim);
  text-align: right;
}

/* ---------- 尾段 ---------- */
.page-faq .page-next .btn-row {
  margin-top: 4px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq {
    --faq-indent: 24px;
  }

  .page-faq .head-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .faq-a {
    padding-left: 58px;
  }

  .page-faq .faq-q {
    padding-left: 20px;
    padding-right: 20px;
  }
}

@media (min-width: 900px) {
  .page-faq .lookup-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 44px;
  }

  .page-faq .glossary-term {
    min-width: 96px;
  }
}

@media (min-width: 980px) {
  .page-faq .qa-media-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 32px;
  }

  .page-faq .glossary {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    column-gap: 44px;
  }

  .page-faq .glossary-item {
    padding: 13px 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-a,
  .page-faq .faq-item::before,
  .page-faq .faq-sign::before,
  .page-faq .faq-sign::after,
  .page-faq .toc-link {
    transition: opacity 0.2s linear;
  }

  .page-faq .faq-item::before {
    transform: none;
    opacity: 0;
  }

  .page-faq .faq-item.is-open::before {
    opacity: 1;
  }
}