.page-faq {
  --faq-sidebar-w: 15.5rem;
  --faq-border: rgba(230, 237, 245, 0.16);
  --faq-card-bg: rgba(255, 255, 255, 0.045);
  --faq-card-bg-open: rgba(57, 255, 20, 0.065);
  padding-top: clamp(1.5rem, 3vw, 2.75rem);
  background-image:
    radial-gradient(circle at 85% 8%, rgba(57, 255, 20, 0.05), transparent 30%),
    radial-gradient(circle at 15% 45%, rgba(255, 107, 53, 0.04), transparent 25%);
  background-repeat: no-repeat;
}

/* 页头 */
.page-faq .faq-hero {
  position: relative;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  left: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(57, 255, 20, 0.45), transparent);
  pointer-events: none;
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.75rem;
  margin-top: 1.5rem;
}

.page-faq .faq-hero__label {
  display: inline-block;
  color: var(--electric-green);
  background: rgba(57, 255, 20, 0.1);
  border-left: 3px solid var(--electric-green);
  padding: 0.4rem 0.7rem;
  letter-spacing: 0.16em;
}

.page-faq .faq-hero__title {
  margin: 1.1rem 0 0.9rem;
  font-size: clamp(2.25rem, 6vw, 4.5rem);
  line-height: 1.08;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--white);
}

.page-faq .faq-hero__lead {
  max-width: 44rem;
  color: var(--light-gray);
  font-size: 1rem;
  line-height: 1.75;
  margin: 0;
}

.page-faq .faq-hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem 2.25rem;
  margin-top: 1.75rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--faq-border);
}

.page-faq .faq-hero__stat {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.page-faq .faq-hero__stat .data-num {
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 800;
  line-height: 1;
  color: var(--electric-green);
}

.page-faq .faq-hero__stat .caption {
  color: var(--light-gray);
  opacity: 0.7;
  letter-spacing: 0.06em;
}

.page-faq .faq-hero__figure {
  margin: 0;
  aspect-ratio: 2 / 1;
  overflow: hidden;
  background:
    linear-gradient(135deg, rgba(57, 255, 20, 0.06) 25%, transparent 25%) 0 0 / 16px 16px,
    var(--slate);
}

.page-faq .faq-hero__figure img {
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
  object-position: center;
}

/* 布局 */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 2rem;
  padding-top: clamp(2rem, 4vw, 3.5rem);
}

/* 索引抽屉 */
.page-faq .faq-toc {
  order: 1;
}

.page-faq .faq-toc__inner {
  display: flex;
  flex-direction: row;
  gap: 0.25rem;
  overflow-x: auto;
  padding: 0.65rem;
  background: var(--glass);
  border: 1px solid var(--faq-border);
  border-radius: var(--radius);
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-toc__label {
  flex-shrink: 0;
  align-self: center;
  margin: 0 0.5rem 0 0.25rem;
  color: var(--electric-green);
  letter-spacing: 0.14em;
  white-space: nowrap;
}

.page-faq .faq-toc__link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  flex-shrink: 0;
  padding: 0.5rem 0.65rem;
  color: var(--light-gray);
  font-size: 0.8125rem;
  text-decoration: none;
  border-bottom: 2px solid transparent;
  border-radius: var(--radius);
  transition: background 160ms var(--ease-out), color 160ms var(--ease-out), border-color 160ms var(--ease-out);
}

.page-faq .faq-toc__link:hover {
  color: var(--white);
  background: rgba(255, 255, 255, 0.06);
}

.page-faq .faq-toc__link.is-spy-active {
  color: var(--electric-green);
  border-bottom-color: var(--electric-green);
  background: rgba(57, 255, 20, 0.08);
}

.page-faq .faq-toc__no {
  font-size: 0.6875rem;
  opacity: 0.6;
}

.page-faq .faq-toc__link.is-spy-active .faq-toc__no {
  opacity: 1;
}

/* 主内容 */
.page-faq .faq-main {
  order: 2;
  min-width: 0;
}

/* 章节 */
.page-faq .faq-section {
  position: relative;
  padding: clamp(1.75rem, 3vw, 2.5rem) 0;
  border-top: 1px solid var(--faq-border);
}

.page-faq .faq-section:first-of-type {
  border-top: none;
  padding-top: 0;
}

.page-faq .faq-section__head {
  position: relative;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 0.9rem;
  align-items: start;
  margin-bottom: 1.5rem;
}

.page-faq .faq-section__no {
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1;
  font-weight: 300;
  color: transparent;
  -webkit-text-stroke: 1px var(--electric-green);
  opacity: 0.9;
  min-width: 2.5rem;
}

.page-faq .faq-section__title {
  margin: 0 0 0.3rem;
  font-size: clamp(1.375rem, 3vw, 2rem);
  font-weight: 800;
  line-height: 1.15;
  color: var(--white);
}

.page-faq .faq-section__desc {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.65;
  color: var(--light-gray);
  opacity: 0.85;
}

.page-faq .faq-section__icon {
  align-self: center;
  color: var(--electric-green);
  opacity: 0.8;
  border: 1px solid rgba(57, 255, 20, 0.25);
  border-radius: 50%;
  padding: 0.35rem;
  width: 2rem;
  height: 2rem;
}

/* FAQ 卡片 */
.page-faq .faq-list {
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
}

.page-faq .faq-card {
  background: var(--faq-card-bg);
  border: 1px solid var(--faq-border);
  border-radius: var(--radius);
  transition: border-color 180ms var(--ease-out), background 180ms var(--ease-out);
}

.page-faq .faq-card:hover {
  border-color: rgba(230, 237, 245, 0.3);
}

.page-faq .faq-card[open] {
  background: var(--faq-card-bg-open);
  border-color: rgba(57, 255, 20, 0.45);
}

.page-faq .faq-card summary {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 1.1rem;
  cursor: pointer;
  list-style: none;
  -webkit-tap-highlight-color: transparent;
}

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

.page-faq .faq-card summary h3 {
  flex: 1;
  margin: 0;
  font-size: 0.9375rem;
  font-weight: 700;
  line-height: 1.45;
  color: var(--white);
  transition: color 180ms var(--ease-out);
}

.page-faq .faq-card[open] summary h3 {
  color: var(--electric-green);
}

.page-faq .faq-card summary .tag {
  flex-shrink: 0;
}

.page-faq .faq-card summary::after {
  content: "+";
  flex-shrink: 0;
  margin-left: 0.25rem;
  color: var(--electric-green);
  font-family: var(--font-mono);
  font-size: 1.125rem;
  line-height: 1;
  transition: transform 220ms var(--ease-out);
}

.page-faq .faq-card[open] summary::after {
  transform: rotate(45deg);
}

.page-faq .faq-card__body {
  padding: 0 1.1rem 1.1rem;
  color: var(--light-gray);
  font-size: 0.906rem;
  line-height: 1.7;
}

.page-faq .faq-card__body p {
  margin: 0;
}

/* 导出流程 */
.page-faq .export-flow {
  background: var(--slate);
  border-radius: var(--radius);
  padding: 1.25rem 1.25rem 1.1rem;
  margin-bottom: 0.75rem;
}

.page-faq .export-flow__steps {
  list-style: none;
  margin: 0 0 1rem;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.page-faq .export-flow__steps li {
  position: relative;
  padding-left: 1.75rem;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  line-height: 1.55;
  color: #cbd5e1;
}

.page-faq .export-flow__steps li::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--electric-green);
  font-weight: 700;
}

.page-faq .export-flow__steps li .mono {
  color: var(--electric-green);
  font-weight: 700;
  margin-right: 0.35rem;
}

.page-faq .export-flow__note {
  margin-bottom: 0.15rem;
}

/* 导出示意 */
.page-faq .faq-export__figure {
  margin: 1rem 0 1.25rem;
  aspect-ratio: 8 / 5;
  overflow: hidden;
  background: var(--midnight-blue);
}

.page-faq .faq-export__figure img {
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
  object-position: center;
}

/* 同步图 */
.page-faq .sync-map {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.5rem;
  margin-bottom: 1.25rem;
}

.page-faq .sync-map__node {
  background: var(--midnight-blue);
  border: 1px solid var(--faq-border);
  border-radius: var(--radius);
  padding: 1rem 1.15rem;
  transition: border-color 180ms var(--ease-out);
}

.page-faq .sync-map__node:hover {
  border-color: rgba(57, 255, 20, 0.3);
}

.page-faq .sync-map__node .mono {
  display: block;
  color: var(--electric-green);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.page-faq .sync-map__node p {
  margin: 0.3rem 0 0;
  color: var(--light-gray);
  font-size: 0.875rem;
  line-height: 1.5;
}

.page-faq .sync-map__arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--electric-green);
}

.page-faq .sync-map__arrow span {
  display: block;
  width: 1px;
  height: 1rem;
  background: var(--electric-green);
  position: relative;
}

.page-faq .sync-map__arrow span::after {
  content: "";
  position: absolute;
  bottom: -1px;
  left: -3px;
  width: 7px;
  height: 7px;
  border-right: 2px solid var(--electric-green);
  border-bottom: 2px solid var(--electric-green);
  transform: rotate(45deg);
}

/* 查询效率 */
.page-faq .query-path {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1rem;
  background: var(--midnight-blue);
  border-radius: var(--radius);
  padding: 1.5rem;
  margin-bottom: 1.25rem;
}

.page-faq .query-path__time .data-num {
  font-size: clamp(2.75rem, 6vw, 4rem);
  font-weight: 800;
  line-height: 0.95;
  color: var(--electric-green);
  display: inline-block;
  margin-right: 0.4rem;
}

.page-faq .query-path__time .caption {
  color: var(--light-gray);
  opacity: 0.75;
}

.page-faq .query-path__steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.page-faq .query-path__steps li {
  display: flex;
  align-items: baseline;
  gap: 0.7rem;
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--light-gray);
  padding-left: 1.5rem;
  position: relative;
}

.page-faq .query-path__steps li::before {
  content: "▹";
  position: absolute;
  left: 0;
  color: var(--electric-green);
  font-size: 0.75rem;
}

.page-faq .query-path__steps li .mono {
  color: var(--electric-green);
  font-weight: 700;
  font-size: 0.8125rem;
}

/* 支持渠道 */
.page-faq .support-channels {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.7rem;
  margin-bottom: 0.9rem;
}

.page-faq .support-channels__item {
  padding: 1.15rem 1.25rem;
  margin: 0;
  border-radius: var(--radius);
}

.page-faq .support-channels__key {
  color: var(--electric-green);
  letter-spacing: 0.14em;
  opacity: 0.85;
}

.page-faq .support-channels__label {
  margin: 0.45rem 0 0.3rem;
  font-size: 1rem;
  font-weight: 700;
  color: var(--white);
}

.page-faq .support-channels__mail {
  color: var(--electric-green);
  font-size: 0.8125rem;
  word-break: break-all;
  display: inline-block;
}

.page-faq .faq-support__address {
  margin: 0 0 1.25rem;
  color: var(--light-gray);
  opacity: 0.72;
  letter-spacing: 0.04em;
}

.page-faq .faq-support__note {
  margin: 1.5rem 0 0;
  padding: 1rem 1.25rem;
  background: rgba(57, 255, 20, 0.07);
  border-left: 3px solid var(--electric-green);
  color: var(--light-gray);
  font-size: 0.875rem;
  line-height: 1.7;
}

/* 延伸入口 */
.page-faq .faq-related {
  margin-top: 2rem;
  padding: 1.15rem 1.25rem;
  background: rgba(255, 107, 53, 0.08);
  border: 1px solid rgba(255, 107, 53, 0.3);
  border-radius: var(--radius);
}

.page-faq .faq-related p {
  margin: 0;
  color: var(--light-gray);
  font-size: 0.906rem;
  line-height: 1.7;
}

.page-faq .faq-related a {
  color: var(--white);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: rgba(255, 107, 53, 0.6);
  transition: color 160ms var(--ease-out), text-decoration-color 160ms var(--ease-out);
}

.page-faq .faq-related a:hover {
  color: var(--orange);
  text-decoration-color: var(--orange);
}

.page-faq .faq-related__mark {
  color: var(--orange);
  margin-right: 0.5rem;
  font-weight: 700;
}

/* 桌面端 */
@media (min-width: 1024px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.75fr);
    gap: clamp(2rem, 5vw, 4.5rem);
    align-items: end;
    margin-top: 2.25rem;
  }

  .page-faq .faq-layout {
    grid-template-columns: minmax(0, 1fr) var(--faq-sidebar-w);
    gap: clamp(2rem, 4vw, 4rem);
    align-items: start;
  }

  .page-faq .faq-toc {
    order: 2;
    position: sticky;
    top: calc(var(--header-h) + 1.5rem);
  }

  .page-faq .faq-toc__inner {
    flex-direction: column;
    gap: 0.25rem;
    overflow: visible;
    padding: 1rem 0.9rem;
  }

  .page-faq .faq-toc__label {
    align-self: flex-start;
    margin: 0 0 0.6rem 0.65rem;
  }

  .page-faq .faq-toc__link {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.55rem 0.65rem;
    font-size: 0.875rem;
    border-bottom: none;
    border-left: 2px solid transparent;
    border-radius: 0 var(--radius) var(--radius) 0;
  }

  .page-faq .faq-toc__link.is-spy-active {
    border-bottom-color: transparent;
    border-left-color: var(--electric-green);
  }

  .page-faq .faq-main {
    order: 1;
  }

  .page-faq .faq-section__head {
    gap: 1rem;
  }

  .page-faq .export-flow__steps {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1rem;
  }

  .page-faq .export-flow__steps li {
    padding-left: 1.75rem;
  }

  .page-faq .faq-export__figure {
    max-width: 20rem;
    margin-left: auto;
    margin-right: 0;
  }

  .page-faq .sync-map {
    grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
    align-items: center;
    gap: 0.75rem;
  }

  .page-faq .sync-map__arrow span {
    width: 2.5rem;
    height: 1px;
  }

  .page-faq .sync-map__arrow span::after {
    right: -1px;
    left: auto;
    bottom: -3px;
    transform: rotate(-45deg);
  }

  .page-faq .query-path {
    grid-template-columns: auto minmax(0, 1fr);
    align-items: center;
    gap: 2rem;
  }

  .page-faq .support-channels {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0.75rem;
  }
}