/* ===== 常见问题速查 · 页面专属样式 ===== */
.page-faq {
  --faq-index-w: 226px;
  --faq-sticky: 104px;
  position: relative;
  padding-bottom: 96px;
  color: var(--white);
}

/* --- 面包屑与首屏 --- */
.page-faq .breadcrumb {
  padding-top: 26px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--grey);
}

.page-faq .breadcrumb a {
  color: var(--grey);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .breadcrumb a:hover,
.page-faq .breadcrumb a:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: 46px 0 34px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-hero__figure {
  display: none;
  position: absolute;
  top: -26px;
  right: -10px;
  font-family: var(--mono);
  font-size: clamp(120px, 16vw, 214px);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.06em;
  color: transparent;
  -webkit-text-stroke: 1px rgba(34, 224, 214, 0.3);
  pointer-events: none;
  user-select: none;
}

.page-faq .faq-hero .label-mono {
  position: relative;
  z-index: 1;
  color: var(--cyan);
}

.page-faq .faq-hero h1 {
  position: relative;
  z-index: 1;
  margin: 14px 0 0;
  font-size: clamp(34px, 9vw, 62px);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -0.02em;
  max-width: 14em;
}

.page-faq .faq-hero__lede {
  position: relative;
  z-index: 1;
  margin: 18px 0 0;
  max-width: 640px;
  font-size: 16px;
  line-height: 1.78;
  color: var(--grey);
}

.page-faq .faq-hero__stats {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 12px 34px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-hero__stats li {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.page-faq .faq-hero__stats strong {
  font-family: var(--mono);
  font-size: 26px;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--gold);
}

.page-faq .faq-hero__stats span {
  font-size: 13px;
  color: var(--grey);
}

/* --- 左索引 / 右问答 分栏 --- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 34px;
  padding-top: 40px;
}

.page-faq .faq-index {
  position: relative;
}

.page-faq .faq-index__title {
  margin: 0 0 12px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--grey);
}

.page-faq .faq-index__list {
  display: flex;
  gap: 6px;
  margin: 0;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

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

.page-faq .faq-index__link {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-size: 13px;
  color: var(--grey);
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-faq .faq-index__no {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--cyan);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--white);
  border-color: var(--cyan);
}

.page-faq .faq-index__link.is-active {
  color: var(--white);
  border-color: var(--magenta);
  background: var(--raised);
}

.page-faq .faq-body {
  min-width: 0;
}

/* --- 分组骨架 --- */
.page-faq .faq-group {
  scroll-margin-top: 120px;
  margin-bottom: 52px;
}

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

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 16px;
}

.page-faq .faq-group__no {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--magenta);
}

.page-faq .faq-group__title {
  margin: 0;
  font-size: clamp(20px, 4.6vw, 28px);
  font-weight: 900;
  letter-spacing: -0.01em;
  line-height: 1.2;
}

/* --- 问答折叠块 --- */
.page-faq .faq-list {
  display: grid;
  gap: 8px;
}

.page-faq .qa {
  border: 1px solid var(--line);
  border-left: 2px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  transition: border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-faq .qa:hover {
  border-left-color: var(--cyan);
}

.page-faq .qa[open] {
  border-left-color: var(--cyan);
  background: var(--raised);
}

.page-faq .qa__q {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 15px 16px;
  cursor: pointer;
  list-style: none;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.55;
  color: var(--white);
}

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

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

.page-faq .qa__no {
  flex: none;
  min-width: 26px;
  padding-top: 2px;
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.08em;
  color: var(--cyan);
}

.page-faq .qa__text {
  min-width: 0;
}

.page-faq .qa__mark {
  position: relative;
  flex: none;
  width: 12px;
  height: 12px;
  margin-left: auto;
  margin-top: 6px;
}

.page-faq .qa__mark::before,
.page-faq .qa__mark::after {
  content: "";
  position: absolute;
  background: var(--cyan);
  transition: transform var(--dur) var(--ease), opacity var(--dur) var(--ease);
}

.page-faq .qa__mark::before {
  left: 0;
  right: 0;
  top: 50%;
  height: 1px;
  transform: translateY(-50%);
}

.page-faq .qa__mark::after {
  top: 0;
  bottom: 0;
  left: 50%;
  width: 1px;
  transform: translateX(-50%);
}

.page-faq .qa[open] .qa__mark::after {
  transform: translateX(-50%) scaleY(0);
  opacity: 0;
}

.page-faq .qa__a {
  padding: 0 16px 18px 50px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--grey);
}

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

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

.page-faq .qa__a a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(34, 224, 214, 0.45);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

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

.page-faq .faq-num {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--gold);
  border-bottom: 1px solid rgba(255, 194, 75, 0.4);
  padding-bottom: 1px;
  white-space: nowrap;
}

/* --- 配图 --- */
.page-faq .faq-figure {
  margin: 18px 0 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  overflow: hidden;
}

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

.page-faq .faq-figure__cap {
  padding: 10px 14px;
  border-top: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--grey);
}

/* --- 联系收口 --- */
.page-faq .faq-contact {
  margin-top: 18px;
  padding: 22px 18px;
  border: 1px solid var(--line);
  border-left: 2px solid var(--magenta);
  border-radius: var(--radius);
  background: var(--panel);
}

.page-faq .faq-contact > * + * {
  margin-top: 18px;
}

.page-faq .faq-contact__lead {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--white);
}

.page-faq .faq-contact__list {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-contact__list li {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
}

.page-faq .faq-contact__list .label-mono {
  color: var(--ice);
}

.page-faq .faq-contact__v {
  font-family: var(--mono);
  font-size: 15px;
  letter-spacing: 0.01em;
  color: var(--white);
  overflow-wrap: anywhere;
}

.page-faq .faq-contact__hint {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--grey);
}

.page-faq .faq-contact__action {
  margin: 0;
  padding-top: 4px;
}

/* --- 平板及以上 --- */
@media (min-width: 720px) {
  .page-faq .faq-hero {
    padding: 62px 0 44px;
  }

  .page-faq .faq-hero__figure {
    display: block;
  }

  .page-faq .faq-hero h1,
  .page-faq .faq-hero__lede,
  .page-faq .faq-hero__stats {
    max-width: 62%;
  }

  .page-faq .faq-hero__lede,
  .page-faq .faq-hero__stats {
    max-width: 640px;
  }

  .page-faq .qa__q {
    padding: 17px 20px;
    gap: 16px;
  }

  .page-faq .qa__no {
    min-width: 30px;
  }

  .page-faq .qa__a {
    padding: 0 22px 20px 66px;
  }

  .page-faq .faq-figure {
    margin: 22px 0 24px;
  }

  .page-faq .faq-contact {
    padding: 26px 26px;
  }

  .page-faq .faq-contact__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px 30px;
  }
}

/* --- 桌面：左索引固定 + 右宽幅问答 --- */
@media (min-width: 980px) {
  .page-faq {
    --faq-index-w: 226px;
  }

  .page-faq .faq-layout {
    grid-template-columns: var(--faq-index-w) minmax(0, 1fr);
    gap: 40px;
    padding-top: 52px;
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: var(--faq-sticky);
  }

  .page-faq .faq-index__list {
    flex-direction: column;
    gap: 2px;
    padding-bottom: 0;
    overflow: visible;
  }

  .page-faq .faq-index__link {
    border: 0;
    border-left: 2px solid var(--line);
    border-radius: 0;
    padding: 9px 12px;
    white-space: normal;
    font-size: 14px;
  }

  .page-faq .faq-index__link:hover,
  .page-faq .faq-index__link:focus-visible {
    border-left-color: var(--cyan);
    background: var(--panel);
    color: var(--white);
  }

  .page-faq .faq-index__link.is-active {
    border-left-color: var(--magenta);
    background: var(--panel);
  }

  .page-faq .faq-group {
    margin-bottom: 66px;
  }

  .page-faq .faq-group__head {
    margin-bottom: 20px;
  }
}

/* --- 降低动效偏好 --- */
@media (prefers-reduced-motion: reduce) {
  .page-faq .qa,
  .page-faq .qa__mark::before,
  .page-faq .qa__mark::after,
  .page-faq .faq-index__link,
  .page-faq .breadcrumb a {
    transition: none;
  }
}