.page-faq {
  --faq-rail-w: 236px;
  --faq-line: rgba(42, 74, 99, 0.55);
  --faq-line-strong: rgba(42, 74, 99, 0.85);
}

.page-faq__crumbs {
  padding-block: 18px 2px;
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  padding-block: 10px 30px;
}

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

.page-faq .faq-hero__title {
  margin: 12px 0 0;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(30px, 7.4vw, 52px);
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--paper);
  overflow-wrap: break-word;
}

.page-faq .faq-hero__mark {
  color: var(--amber);
  position: relative;
}

.page-faq .faq-hero__mark::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  height: 4px;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--amber), rgba(242, 179, 61, 0));
}

.page-faq .faq-hero__lede {
  margin: 18px 0 0;
  max-width: 48ch;
  font-size: 16px;
  line-height: 1.78;
  color: var(--mist);
}

.page-faq .faq-hero__chips {
  margin-top: 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-faq .faq-hero__fig {
  margin: 0;
  min-width: 0;
}

.page-faq .faq-hero__fig .fig__frame {
  aspect-ratio: 16 / 9;
  border-radius: var(--radius-l);
  overflow: hidden;
  border: 1px solid var(--faq-line);
  background: rgba(23, 51, 77, 0.5);
}

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

.page-faq .faq-hero__fig .fig__frame img {
  height: 100%;
}

/* ---------- 双栏骨架 ---------- */

.page-faq .faq-layout {
  display: grid;
  gap: 22px;
  padding-bottom: 64px;
  min-width: 0;
}

.page-faq .faq-stream {
  display: flex;
  flex-direction: column;
  gap: 36px;
  min-width: 0;
}

/* ---------- 左侧索引 ---------- */

.page-faq .faq-rail {
  border: 1px solid var(--faq-line);
  border-radius: var(--radius-m);
  background: rgba(23, 51, 77, 0.5);
  padding: 14px 12px;
  min-width: 0;
}

.page-faq .faq-rail__label {
  margin: 0;
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--amber);
}

.page-faq .faq-rail__list {
  list-style: none;
  margin: 10px 0 0;
  padding: 0;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

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

.page-faq .faq-rail__link {
  display: flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
  padding: 8px 13px;
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  font-size: 14px;
  color: var(--mist);
  text-decoration: none;
  transition: color var(--dur) var(--ease), background-color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .faq-rail__link .mono {
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--amber);
  opacity: 0.85;
}

.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  color: var(--amber-hi);
  background: rgba(242, 179, 61, 0.12);
  border-color: rgba(242, 179, 61, 0.4);
}

.page-faq .faq-rail__foot {
  margin: 12px 2px 0;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--mist);
}

.page-faq .faq-rail__foot a {
  color: var(--amber);
  text-decoration: none;
  border-bottom: 1px solid rgba(242, 179, 61, 0.4);
}

.page-faq .faq-rail__foot a:hover {
  color: var(--amber-hi);
}

/* ---------- 分组 ---------- */

.page-faq .faq-group {
  scroll-margin-top: calc(var(--header-h) + 20px);
  min-width: 0;
}

.page-faq .faq-group__head {
  display: flex;
  gap: 13px;
  align-items: flex-start;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .faq-group__num {
  flex: none;
  margin-top: 3px;
  font-size: 12px;
  letter-spacing: 0.14em;
  line-height: 1.5;
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  background: var(--amber);
  color: var(--ink);
}

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

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(20px, 4.6vw, 27px);
  line-height: 1.16;
  letter-spacing: -0.01em;
  color: var(--paper);
  transition: color var(--dur) var(--ease);
}

.page-faq .faq-group__lede {
  margin: 8px 0 0;
  max-width: 60ch;
  font-size: 15px;
  line-height: 1.72;
  color: var(--mist);
}

.page-faq .faq-group:target .faq-group__title {
  color: var(--amber-hi);
}

.page-faq .faq-group:target .faq-group__num {
  background: var(--amber-hi);
}

/* ---------- 首屏三条速答 ---------- */

.page-faq .faq-quick {
  margin-top: 18px;
  display: grid;
  gap: 12px;
}

.page-faq .faq-quick__card {
  position: relative;
  border: 1px solid var(--faq-line);
  border-radius: var(--radius-m);
  background: linear-gradient(165deg, rgba(14, 59, 46, 0.7), rgba(10, 27, 42, 0.75));
  padding: 16px 16px 18px;
  overflow: hidden;
  transition: border-color var(--dur) var(--ease);
}

.page-faq .faq-quick__card::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
  background: linear-gradient(180deg, var(--amber), rgba(242, 179, 61, 0));
}

.page-faq .faq-quick__card:hover {
  border-color: rgba(242, 179, 61, 0.5);
}

.page-faq .faq-quick__tag {
  margin: 0;
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--amber);
}

.page-faq .faq-quick__title {
  margin: 9px 0 0;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 17px;
  line-height: 1.42;
  color: var(--paper);
}

.page-faq .faq-quick__text {
  margin: 9px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--mist);
}

/* ---------- 问答手风琴 ---------- */

.page-faq .faq-stack {
  margin-top: 14px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.page-faq .faq-q {
  border: 1px solid var(--faq-line);
  border-radius: var(--radius-m);
  background: linear-gradient(180deg, rgba(23, 51, 77, 0.72), rgba(10, 27, 42, 0.72));
  overflow: hidden;
  transition: border-color var(--dur) var(--ease);
}

.page-faq .faq-q:hover {
  border-color: rgba(242, 179, 61, 0.4);
}

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

.page-faq .faq-q__head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 14px;
  width: 100%;
  padding: 15px 16px;
  border: 0;
  background: none;
  text-align: left;
  cursor: pointer;
  font-family: var(--font-head);
  font-size: 16px;
  font-weight: 700;
  line-height: 1.45;
  color: var(--paper);
  transition: color var(--dur) var(--ease);
}

.page-faq .faq-q__head:hover {
  color: var(--amber-hi);
}

.page-faq .faq-q__q {
  position: relative;
  padding-left: 14px;
  min-width: 0;
}

.page-faq .faq-q__q::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.34em;
  bottom: 0.34em;
  width: 3px;
  border-radius: 2px;
  background: var(--line);
  transition: background-color var(--dur) var(--ease), transform var(--dur) var(--ease);
  transform-origin: top;
}

.page-faq .faq-q__head:hover .faq-q__q::before,
.page-faq .faq-q__head[aria-expanded="true"] .faq-q__q::before {
  background: var(--amber);
}

.page-faq .faq-q__state {
  flex: none;
  margin-top: 2px;
  padding: 3px 9px;
  border: 1px solid var(--faq-line-strong);
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  line-height: 1.4;
  color: var(--mist);
  transition: color var(--dur) var(--ease), background-color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .faq-q__head[aria-expanded="true"] .faq-q__state {
  background: var(--amber);
  border-color: var(--amber);
  color: var(--ink);
}

.page-faq .faq-q .panel__body {
  padding: 0 16px 16px;
}

.page-faq .faq-q .panel__inner {
  border-top: 1px dashed var(--faq-line-strong);
  padding-top: 14px;
}

.page-faq .panel__inner > p {
  margin: 0 0 10px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

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

.page-faq .panel__inner a {
  color: var(--amber);
  text-decoration: none;
  border-bottom: 1px solid rgba(242, 179, 61, 0.4);
}

.page-faq .panel__inner a:hover {
  color: var(--amber-hi);
}

/* ---------- 数值胶囊 ---------- */

.page-faq .faq-facts {
  list-style: none;
  margin: 12px 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-faq .faq-facts li {
  display: flex;
  align-items: baseline;
  gap: 6px;
  padding: 6px 12px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(242, 179, 61, 0.32);
  background: rgba(242, 179, 61, 0.1);
  font-size: 13px;
  line-height: 1.6;
  color: var(--paper);
}

.page-faq .faq-facts .mono {
  font-size: 13px;
  font-weight: 700;
  color: var(--amber-hi);
}

/* ---------- 时间戳 ---------- */

.page-faq .faq-stamp {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 12px 0 0;
  padding: 6px 12px;
  border: 1px solid var(--faq-line-strong);
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--paper);
}

.page-faq .faq-stamp::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--coral);
}

/* ---------- 步骤条 ---------- */

.page-faq .faq-steps {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
}

.page-faq .faq-step {
  position: relative;
  padding: 0 0 20px 36px;
}

.page-faq .faq-step::before {
  content: "";
  position: absolute;
  left: 10px;
  top: 22px;
  bottom: 0;
  width: 1px;
  background: var(--faq-line-strong);
}

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

.page-faq .faq-step:last-child::before {
  display: none;
}

.page-faq .faq-step__dot {
  position: absolute;
  left: 0;
  top: 2px;
  width: 21px;
  height: 21px;
  display: grid;
  place-items: center;
  border: 1px solid var(--amber);
  border-radius: 50%;
  background: rgba(242, 179, 61, 0.16);
  color: var(--amber-hi);
  font-size: 11px;
  line-height: 1;
}

.page-faq .faq-step__title {
  margin: 0 0 5px;
  font-family: var(--font-head);
  font-size: 15.5px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--paper);
}

.page-faq .faq-step__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--mist);
}

/* ---------- 设备图 ---------- */

.page-faq .faq-devicefig {
  margin: 20px 0 0;
  max-width: 520px;
}

.page-faq .faq-devicefig .fig__frame {
  aspect-ratio: 4 / 3;
  border: 1px solid var(--faq-line);
  border-radius: var(--radius-m);
  overflow: hidden;
  background: rgba(23, 51, 77, 0.5);
}

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

.page-faq .faq-devicefig .fig__cap {
  margin-top: 9px;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- 收口分组 ---------- */

.page-faq .faq-group--help {
  border: 1px solid var(--faq-line);
  border-radius: var(--radius-l);
  padding: 22px 18px 20px;
  background: linear-gradient(158deg, rgba(14, 59, 46, 0.82), rgba(10, 27, 42, 0.6));
}

.page-faq .faq-group--help .faq-group__head {
  border-bottom-color: rgba(242, 179, 61, 0.28);
}

.page-faq .faq-help {
  margin-top: 16px;
  display: grid;
  gap: 12px;
}

.page-faq .faq-help__card {
  border: 1px solid var(--faq-line);
  border-radius: var(--radius-m);
  background: rgba(5, 18, 29, 0.5);
  padding: 15px 15px 16px;
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-faq .faq-help__card:hover {
  border-color: rgba(242, 179, 61, 0.45);
}

.page-faq .faq-help__label {
  margin: 0;
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--amber);
}

.page-faq .faq-help__value {
  display: block;
  margin: 10px 0 0;
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.02em;
  line-height: 1.5;
  color: var(--paper);
  overflow-wrap: break-word;
  word-break: break-word;
}

.page-faq .faq-help__note {
  margin: 9px 0 0;
  font-size: 13px;
  line-height: 1.72;
  color: var(--mist);
}

.page-faq .faq-help__foot {
  margin: 16px 0 0;
  font-size: 13.5px;
  line-height: 1.78;
  color: var(--mist);
}

.page-faq .faq-help__foot a {
  color: var(--amber);
  text-decoration: none;
  border-bottom: 1px solid rgba(242, 179, 61, 0.4);
}

.page-faq .faq-help__foot a:hover {
  color: var(--amber-hi);
}

/* ---------- 平板 ---------- */

@media (min-width: 640px) {
  .page-faq .faq-quick {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
  }

  .page-faq .faq-hero__fig .fig__frame {
    aspect-ratio: 21 / 9;
  }
}

/* ---------- 桌面 ---------- */

@media (min-width: 900px) {
  .page-faq .faq-hero {
    padding-block: 20px 46px;
  }

  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    gap: 44px;
    align-items: center;
  }

  .page-faq .faq-hero__fig .fig__frame {
    aspect-ratio: 16 / 10;
  }

  .page-faq .faq-devicefig {
    max-width: 440px;
    margin-left: 0;
    margin-right: auto;
  }

  .page-faq .faq-help {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
  }

  .page-faq .faq-group--help {
    padding: 26px 24px 24px;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
    gap: 46px;
    align-items: start;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: calc(var(--header-h) + 18px);
    padding: 16px 14px;
  }

  .page-faq .faq-rail__list {
    flex-direction: column;
    gap: 2px;
    overflow: visible;
  }

  .page-faq .faq-rail__link {
    border-radius: var(--radius-s);
    white-space: normal;
    line-height: 1.5;
    padding: 9px 12px 9px 0;
    position: relative;
    padding-left: 12px;
  }

  .page-faq .faq-rail__link::before {
    content: "";
    position: absolute;
    left: 0;
    top: 8px;
    bottom: 8px;
    width: 3px;
    border-radius: 2px;
    background: var(--line);
    transition: background-color var(--dur) var(--ease);
  }

  .page-faq .faq-rail__link:hover::before,
  .page-faq .faq-rail__link:focus-visible::before {
    background: var(--amber);
  }

  .page-faq .faq-rail__link:hover,
  .page-faq .faq-rail__link:focus-visible {
    border-color: transparent;
    background: rgba(242, 179, 61, 0.08);
  }
}

@media (min-width: 1180px) {
  .page-faq .faq-stream {
    gap: 42px;
  }

  .page-faq .faq-q__head {
    padding: 17px 20px;
    font-size: 16.5px;
  }

  .page-faq .faq-q .panel__body {
    padding: 0 20px 18px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-q__q::before,
  .page-faq .faq-q__state,
  .page-faq .faq-rail__link,
  .page-faq .faq-help__card {
    transition: none;
  }
}